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fuchsia / third_party / wuffs / b8d44be7835a373633e7cf0987978d4a5733fcf5 / . / release / c / wuffs-unsupported-snapshot.c
blob: 4b8b3c537b0ffeecfe1d73326f2cfe1e96768bf4 [file] [log] [blame]
#ifndef WUFFS_INCLUDE_GUARD
#define WUFFS_INCLUDE_GUARD
// Wuffs ships as a "single file C library" or "header file library" as per
// https://github.com/nothings/stb/blob/master/docs/stb_howto.txt
//
// To use that single file as a "foo.c"-like implementation, instead of a
// "foo.h"-like header, #define WUFFS_IMPLEMENTATION before #include'ing or
// compiling it.
// Wuffs' C code is generated automatically, not hand-written. These warnings'
// costs outweigh the benefits.
//
// The "elif defined(__clang__)" isn't redundant. While vanilla clang defines
// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not.
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
#pragma GCC diagnostic ignored "-Wunreachable-code"
#pragma GCC diagnostic ignored "-Wunused-function"
#pragma GCC diagnostic ignored "-Wunused-parameter"
#if defined(__cplusplus)
#pragma GCC diagnostic ignored "-Wold-style-cast"
#endif
#elif defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wimplicit-fallthrough"
#pragma clang diagnostic ignored "-Wmissing-field-initializers"
#pragma clang diagnostic ignored "-Wunreachable-code"
#pragma clang diagnostic ignored "-Wunused-function"
#pragma clang diagnostic ignored "-Wunused-parameter"
#if defined(__cplusplus)
#pragma clang diagnostic ignored "-Wold-style-cast"
#endif
#endif
// Copyright 2017 The Wuffs Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#ifdef __cplusplus
#if (__cplusplus >= 201103L) || defined(_MSC_VER)
#include <memory>
#define WUFFS_BASE__HAVE_EQ_DELETE
#define WUFFS_BASE__HAVE_UNIQUE_PTR
// The "defined(__clang__)" isn't redundant. While vanilla clang defines
// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not.
#elif defined(__GNUC__) || defined(__clang__)
#warning "Wuffs' C++ code expects -std=c++11 or later"
#endif
extern "C" {
#endif
// ---------------- Version
// WUFFS_VERSION is the major.minor.patch version, as per https://semver.org/,
// as a uint64_t. The major number is the high 32 bits. The minor number is the
// middle 16 bits. The patch number is the low 16 bits. The pre-release label
// and build metadata are part of the string representation (such as
// "1.2.3-beta+456.20181231") but not the uint64_t representation.
//
// WUFFS_VERSION_PRE_RELEASE_LABEL (such as "", "beta" or "rc.1") being
// non-empty denotes a developer preview, not a release version, and has no
// backwards or forwards compatibility guarantees.
//
// WUFFS_VERSION_BUILD_METADATA_XXX, if non-zero, are the number of commits and
// the last commit date in the repository used to build this library. Within
// each major.minor branch, the commit count should increase monotonically.
//
// ยก Some code generation programs can override WUFFS_VERSION.
#define WUFFS_VERSION 0
#define WUFFS_VERSION_MAJOR 0
#define WUFFS_VERSION_MINOR 0
#define WUFFS_VERSION_PATCH 0
#define WUFFS_VERSION_PRE_RELEASE_LABEL "unsupported.snapshot"
#define WUFFS_VERSION_BUILD_METADATA_COMMIT_COUNT 0
#define WUFFS_VERSION_BUILD_METADATA_COMMIT_DATE 0
#define WUFFS_VERSION_STRING "0.0.0+0.00000000"
// ---------------- Configuration
// Define WUFFS_CONFIG__AVOID_CPU_ARCH to avoid any code tied to a specific CPU
// architecture, such as SSE SIMD for the x86 CPU family.
#if defined(WUFFS_CONFIG__AVOID_CPU_ARCH) // (#if-chain ref AVOID_CPU_ARCH_0)
// No-op.
#else // (#if-chain ref AVOID_CPU_ARCH_0)
// The "defined(__clang__)" isn't redundant. While vanilla clang defines
// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not.
#if defined(__GNUC__) || defined(__clang__)
#define WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET(arg) __attribute__((target(arg)))
#else
#define WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET(arg)
#endif // defined(__GNUC__) || defined(__clang__)
#if defined(__GNUC__) // (#if-chain ref AVOID_CPU_ARCH_1)
// To simplify Wuffs code, "cpu_arch >= arm_xxx" requires xxx but also
// unaligned little-endian load/stores.
#if defined(__ARM_FEATURE_UNALIGNED) && !defined(__native_client__) && \
defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
// Not all gcc versions define __ARM_ACLE, even if they support crc32
// intrinsics. Look for __ARM_FEATURE_CRC32 instead.
#if defined(__ARM_FEATURE_CRC32)
#include <arm_acle.h>
#define WUFFS_BASE__CPU_ARCH__ARM_CRC32
#endif // defined(__ARM_FEATURE_CRC32)
#if defined(__ARM_NEON)
#include <arm_neon.h>
#define WUFFS_BASE__CPU_ARCH__ARM_NEON
#endif // defined(__ARM_NEON)
#endif // defined(__ARM_FEATURE_UNALIGNED) etc
// Similarly, "cpu_arch >= x86_sse42" requires SSE4.2 but also PCLMUL and
// POPCNT. This is checked at runtime via cpuid, not at compile time.
//
// Likewise, "cpu_arch >= x86_avx2" also requires PCLMUL, POPCNT and SSE4.2.
#if defined(__i386__) || defined(__x86_64__)
#if !defined(__native_client__)
#include <cpuid.h>
#include <x86intrin.h>
// X86_FAMILY means X86 (32-bit) or X86_64 (64-bit, obviously).
#define WUFFS_BASE__CPU_ARCH__X86_FAMILY
#endif // !defined(__native_client__)
#endif // defined(__i386__) || defined(__x86_64__)
#elif defined(_MSC_VER) // (#if-chain ref AVOID_CPU_ARCH_1)
#if defined(_M_IX86) || defined(_M_X64)
#if defined(__AVX__) || defined(__clang__)
// We need <intrin.h> for the __cpuid function.
#include <intrin.h>
// That's not enough for X64 SIMD, with clang-cl, if we want to use
// "__attribute__((target(arg)))" without e.g. "/arch:AVX".
//
// Some web pages suggest that <immintrin.h> is all you need, as it pulls in
// the earlier SIMD families like SSE4.2, but that doesn't seem to work in
// practice, possibly for the same reason that just <intrin.h> doesn't work.
#include <immintrin.h> // AVX, AVX2, FMA, POPCNT
#include <nmmintrin.h> // SSE4.2
#include <wmmintrin.h> // AES, PCLMUL
// X86_FAMILY means X86 (32-bit) or X86_64 (64-bit, obviously).
#define WUFFS_BASE__CPU_ARCH__X86_FAMILY
#else // defined(__AVX__) || defined(__clang__)
// clang-cl (which defines both __clang__ and _MSC_VER) supports
// "__attribute__((target(arg)))".
//
// For MSVC's cl.exe (unlike clang or gcc), SIMD capability is a compile-time
// property of the source file (e.g. a /arch:AVX or -mavx compiler flag), not
// of individual functions (that can be conditionally selected at runtime).
#pragma message("Wuffs with MSVC+IX86/X64 needs /arch:AVX for best performance")
#endif // defined(__AVX__) || defined(__clang__)
#endif // defined(_M_IX86) || defined(_M_X64)
#endif // (#if-chain ref AVOID_CPU_ARCH_1)
#endif // (#if-chain ref AVOID_CPU_ARCH_0)
// --------
// Define WUFFS_CONFIG__STATIC_FUNCTIONS (combined with WUFFS_IMPLEMENTATION)
// to make all of Wuffs' functions have static storage.
//
// This can help the compiler ignore or discard unused code, which can produce
// faster compiles and smaller binaries. Other motivations are discussed in the
// "ALLOW STATIC IMPLEMENTATION" section of
// https://raw.githubusercontent.com/nothings/stb/master/docs/stb_howto.txt
#if defined(WUFFS_CONFIG__STATIC_FUNCTIONS)
#define WUFFS_BASE__MAYBE_STATIC static
#else
#define WUFFS_BASE__MAYBE_STATIC
#endif // defined(WUFFS_CONFIG__STATIC_FUNCTIONS)
// ---------------- CPU Architecture
static inline bool //
wuffs_base__cpu_arch__have_arm_crc32() {
#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
return true;
#else
return false;
#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
}
static inline bool //
wuffs_base__cpu_arch__have_arm_neon() {
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
return true;
#else
return false;
#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
}
static inline bool //
wuffs_base__cpu_arch__have_x86_avx2() {
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// GCC defines these macros but MSVC does not.
// - bit_AVX2 = (1 << 5)
const unsigned int avx2_ebx7 = 0x00000020;
// GCC defines these macros but MSVC does not.
// - bit_PCLMUL = (1 << 1)
// - bit_POPCNT = (1 << 23)
// - bit_SSE4_2 = (1 << 20)
const unsigned int avx2_ecx1 = 0x00900002;
// clang defines __GNUC__ and clang-cl defines _MSC_VER (but not __GNUC__).
#if defined(__GNUC__)
unsigned int eax7 = 0;
unsigned int ebx7 = 0;
unsigned int ecx7 = 0;
unsigned int edx7 = 0;
if (__get_cpuid_count(7, 0, &eax7, &ebx7, &ecx7, &edx7) &&
((ebx7 & avx2_ebx7) == avx2_ebx7)) {
unsigned int eax1 = 0;
unsigned int ebx1 = 0;
unsigned int ecx1 = 0;
unsigned int edx1 = 0;
if (__get_cpuid(1, &eax1, &ebx1, &ecx1, &edx1) &&
((ecx1 & avx2_ecx1) == avx2_ecx1)) {
return true;
}
}
#elif defined(_MSC_VER) // defined(__GNUC__)
int x7[4];
__cpuidex(x7, 7, 0);
if ((((unsigned int)(x7[1])) & avx2_ebx7) == avx2_ebx7) {
int x1[4];
__cpuid(x1, 1);
if ((((unsigned int)(x1[2])) & avx2_ecx1) == avx2_ecx1) {
return true;
}
}
#else
#error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler"
#endif // defined(__GNUC__); defined(_MSC_VER)
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
return false;
}
static inline bool //
wuffs_base__cpu_arch__have_x86_bmi2() {
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// GCC defines these macros but MSVC does not.
// - bit_BMI2 = (1 << 8)
const unsigned int bmi2_ebx7 = 0x00000100;
// clang defines __GNUC__ and clang-cl defines _MSC_VER (but not __GNUC__).
#if defined(__GNUC__)
unsigned int eax7 = 0;
unsigned int ebx7 = 0;
unsigned int ecx7 = 0;
unsigned int edx7 = 0;
if (__get_cpuid_count(7, 0, &eax7, &ebx7, &ecx7, &edx7) &&
((ebx7 & bmi2_ebx7) == bmi2_ebx7)) {
return true;
}
#elif defined(_MSC_VER) // defined(__GNUC__)
int x7[4];
__cpuidex(x7, 7, 0);
if ((((unsigned int)(x7[1])) & bmi2_ebx7) == bmi2_ebx7) {
return true;
}
#else
#error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler"
#endif // defined(__GNUC__); defined(_MSC_VER)
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
return false;
}
static inline bool //
wuffs_base__cpu_arch__have_x86_sse42() {
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// GCC defines these macros but MSVC does not.
// - bit_PCLMUL = (1 << 1)
// - bit_POPCNT = (1 << 23)
// - bit_SSE4_2 = (1 << 20)
const unsigned int sse42_ecx1 = 0x00900002;
// clang defines __GNUC__ and clang-cl defines _MSC_VER (but not __GNUC__).
#if defined(__GNUC__)
unsigned int eax1 = 0;
unsigned int ebx1 = 0;
unsigned int ecx1 = 0;
unsigned int edx1 = 0;
if (__get_cpuid(1, &eax1, &ebx1, &ecx1, &edx1) &&
((ecx1 & sse42_ecx1) == sse42_ecx1)) {
return true;
}
#elif defined(_MSC_VER) // defined(__GNUC__)
int x1[4];
__cpuid(x1, 1);
if ((((unsigned int)(x1[2])) & sse42_ecx1) == sse42_ecx1) {
return true;
}
#else
#error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler"
#endif // defined(__GNUC__); defined(_MSC_VER)
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
return false;
}
// ---------------- Fundamentals
// Wuffs assumes that:
// - converting a uint32_t to a size_t will never overflow.
// - converting a size_t to a uint64_t will never overflow.
#if defined(__WORDSIZE)
#if (__WORDSIZE != 32) && (__WORDSIZE != 64)
#error "Wuffs requires a word size of either 32 or 64 bits"
#endif
#endif
// The "defined(__clang__)" isn't redundant. While vanilla clang defines
// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not.
#if defined(__GNUC__) || defined(__clang__)
#define WUFFS_BASE__POTENTIALLY_UNUSED __attribute__((unused))
#define WUFFS_BASE__WARN_UNUSED_RESULT __attribute__((warn_unused_result))
#else
#define WUFFS_BASE__POTENTIALLY_UNUSED
#define WUFFS_BASE__WARN_UNUSED_RESULT
#endif
// --------
// Options (bitwise or'ed together) for wuffs_foo__bar__initialize functions.
#define WUFFS_INITIALIZE__DEFAULT_OPTIONS ((uint32_t)0x00000000)
// WUFFS_INITIALIZE__ALREADY_ZEROED means that the "self" receiver struct value
// has already been set to all zeroes.
#define WUFFS_INITIALIZE__ALREADY_ZEROED ((uint32_t)0x00000001)
// WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED means that, absent
// WUFFS_INITIALIZE__ALREADY_ZEROED, only some of the "self" receiver struct
// value will be set to all zeroes. Internal buffers, which tend to be a large
// proportion of the struct's size, will be left uninitialized. Internal means
// that the buffer is contained by the receiver struct, as opposed to being
// passed as a separately allocated "work buffer".
//
// For more detail, see:
// https://github.com/google/wuffs/blob/main/doc/note/initialization.md
#define WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED \
((uint32_t)0x00000002)
// --------
// wuffs_base__empty_struct is used when a Wuffs function returns an empty
// struct. In C, if a function f returns void, you can't say "x = f()", but in
// Wuffs, if a function g returns empty, you can say "y = g()".
typedef struct wuffs_base__empty_struct__struct {
// private_impl is a placeholder field. It isn't explicitly used, except that
// without it, the sizeof a struct with no fields can differ across C/C++
// compilers, and it is undefined behavior in C99. For example, gcc says that
// the sizeof an empty struct is 0, and g++ says that it is 1. This leads to
// ABI incompatibility if a Wuffs .c file is processed by one compiler and
// its .h file with another compiler.
//
// Instead, we explicitly insert an otherwise unused field, so that the
// sizeof this struct is always 1.
uint8_t private_impl;
} wuffs_base__empty_struct;
static inline wuffs_base__empty_struct //
wuffs_base__make_empty_struct() {
wuffs_base__empty_struct ret;
ret.private_impl = 0;
return ret;
}
// wuffs_base__utility is a placeholder receiver type. It enables what Java
// calls static methods, as opposed to regular methods.
typedef struct wuffs_base__utility__struct {
// private_impl is a placeholder field. It isn't explicitly used, except that
// without it, the sizeof a struct with no fields can differ across C/C++
// compilers, and it is undefined behavior in C99. For example, gcc says that
// the sizeof an empty struct is 0, and g++ says that it is 1. This leads to
// ABI incompatibility if a Wuffs .c file is processed by one compiler and
// its .h file with another compiler.
//
// Instead, we explicitly insert an otherwise unused field, so that the
// sizeof this struct is always 1.
uint8_t private_impl;
} wuffs_base__utility;
typedef struct wuffs_base__vtable__struct {
const char* vtable_name;
const void* function_pointers;
} wuffs_base__vtable;
// --------
// See https://github.com/google/wuffs/blob/main/doc/note/statuses.md
typedef struct wuffs_base__status__struct {
const char* repr;
#ifdef __cplusplus
inline bool is_complete() const;
inline bool is_error() const;
inline bool is_note() const;
inline bool is_ok() const;
inline bool is_suspension() const;
inline const char* message() const;
#endif // __cplusplus
} wuffs_base__status;
extern const char wuffs_base__note__i_o_redirect[];
extern const char wuffs_base__note__end_of_data[];
extern const char wuffs_base__note__metadata_reported[];
extern const char wuffs_base__suspension__even_more_information[];
extern const char wuffs_base__suspension__mispositioned_read[];
extern const char wuffs_base__suspension__mispositioned_write[];
extern const char wuffs_base__suspension__short_read[];
extern const char wuffs_base__suspension__short_write[];
extern const char wuffs_base__error__bad_i_o_position[];
extern const char wuffs_base__error__bad_argument_length_too_short[];
extern const char wuffs_base__error__bad_argument[];
extern const char wuffs_base__error__bad_call_sequence[];
extern const char wuffs_base__error__bad_data[];
extern const char wuffs_base__error__bad_receiver[];
extern const char wuffs_base__error__bad_restart[];
extern const char wuffs_base__error__bad_sizeof_receiver[];
extern const char wuffs_base__error__bad_vtable[];
extern const char wuffs_base__error__bad_workbuf_length[];
extern const char wuffs_base__error__bad_wuffs_version[];
extern const char wuffs_base__error__cannot_return_a_suspension[];
extern const char wuffs_base__error__disabled_by_previous_error[];
extern const char wuffs_base__error__initialize_falsely_claimed_already_zeroed[];
extern const char wuffs_base__error__initialize_not_called[];
extern const char wuffs_base__error__interleaved_coroutine_calls[];
extern const char wuffs_base__error__no_more_information[];
extern const char wuffs_base__error__not_enough_data[];
extern const char wuffs_base__error__out_of_bounds[];
extern const char wuffs_base__error__unsupported_method[];
extern const char wuffs_base__error__unsupported_option[];
extern const char wuffs_base__error__unsupported_pixel_swizzler_option[];
extern const char wuffs_base__error__too_much_data[];
static inline wuffs_base__status //
wuffs_base__make_status(const char* repr) {
wuffs_base__status z;
z.repr = repr;
return z;
}
static inline bool //
wuffs_base__status__is_complete(const wuffs_base__status* z) {
return (z->repr == NULL) || ((*z->repr != '$') && (*z->repr != '#'));
}
static inline bool //
wuffs_base__status__is_error(const wuffs_base__status* z) {
return z->repr && (*z->repr == '#');
}
static inline bool //
wuffs_base__status__is_note(const wuffs_base__status* z) {
return z->repr && (*z->repr != '$') && (*z->repr != '#');
}
static inline bool //
wuffs_base__status__is_ok(const wuffs_base__status* z) {
return z->repr == NULL;
}
static inline bool //
wuffs_base__status__is_suspension(const wuffs_base__status* z) {
return z->repr && (*z->repr == '$');
}
// wuffs_base__status__message strips the leading '$', '#' or '@'.
static inline const char* //
wuffs_base__status__message(const wuffs_base__status* z) {
if (z->repr) {
if ((*z->repr == '$') || (*z->repr == '#') || (*z->repr == '@')) {
return z->repr + 1;
}
}
return z->repr;
}
#ifdef __cplusplus
inline bool //
wuffs_base__status::is_complete() const {
return wuffs_base__status__is_complete(this);
}
inline bool //
wuffs_base__status::is_error() const {
return wuffs_base__status__is_error(this);
}
inline bool //
wuffs_base__status::is_note() const {
return wuffs_base__status__is_note(this);
}
inline bool //
wuffs_base__status::is_ok() const {
return wuffs_base__status__is_ok(this);
}
inline bool //
wuffs_base__status::is_suspension() const {
return wuffs_base__status__is_suspension(this);
}
inline const char* //
wuffs_base__status::message() const {
return wuffs_base__status__message(this);
}
#endif // __cplusplus
// --------
// WUFFS_BASE__RESULT is a result type: either a status (an error) or a value.
//
// A result with all fields NULL or zero is as valid as a zero-valued T.
#define WUFFS_BASE__RESULT(T) \
struct { \
wuffs_base__status status; \
T value; \
}
typedef WUFFS_BASE__RESULT(double) wuffs_base__result_f64;
typedef WUFFS_BASE__RESULT(int64_t) wuffs_base__result_i64;
typedef WUFFS_BASE__RESULT(uint64_t) wuffs_base__result_u64;
// --------
// wuffs_base__transform__output is the result of transforming from a src slice
// to a dst slice.
typedef struct wuffs_base__transform__output__struct {
wuffs_base__status status;
size_t num_dst;
size_t num_src;
} wuffs_base__transform__output;
// --------
// FourCC constants. Four Character Codes are literally four ASCII characters
// (sometimes padded with ' ' spaces) that pack neatly into a signed or
// unsigned 32-bit integer. ASCII letters are conventionally upper case.
//
// They are often used to identify video codecs (e.g. "H265") and pixel formats
// (e.g. "YV12"). Wuffs uses them for that but also generally for naming
// various things: compression formats (e.g. "BZ2 "), image metadata (e.g.
// "EXIF"), file formats (e.g. "HTML"), etc.
//
// Wuffs' u32 values are big-endian ("JPEG" is 0x4A504547 not 0x4745504A) to
// preserve ordering: "JPEG" < "MP3 " and 0x4A504547 < 0x4D503320.
// Background Color.
#define WUFFS_BASE__FOURCC__BGCL 0x4247434C
// Bitmap.
#define WUFFS_BASE__FOURCC__BMP 0x424D5020
// Brotli.
#define WUFFS_BASE__FOURCC__BRTL 0x4252544C
// Bzip2.
#define WUFFS_BASE__FOURCC__BZ2 0x425A3220
// Concise Binary Object Representation.
#define WUFFS_BASE__FOURCC__CBOR 0x43424F52
// Primary Chromaticities and White Point.
#define WUFFS_BASE__FOURCC__CHRM 0x4348524D
// Cascading Style Sheets.
#define WUFFS_BASE__FOURCC__CSS 0x43535320
// Encapsulated PostScript.
#define WUFFS_BASE__FOURCC__EPS 0x45505320
// Exchangeable Image File Format.
#define WUFFS_BASE__FOURCC__EXIF 0x45584946
// Free Lossless Audio Codec.
#define WUFFS_BASE__FOURCC__FLAC 0x464C4143
// Gamma Correction.
#define WUFFS_BASE__FOURCC__GAMA 0x47414D41
// Graphics Interchange Format.
#define WUFFS_BASE__FOURCC__GIF 0x47494620
// GNU Zip.
#define WUFFS_BASE__FOURCC__GZ 0x475A2020
// High Efficiency Image File.
#define WUFFS_BASE__FOURCC__HEIF 0x48454946
// Hypertext Markup Language.
#define WUFFS_BASE__FOURCC__HTML 0x48544D4C
// International Color Consortium Profile.
#define WUFFS_BASE__FOURCC__ICCP 0x49434350
// Icon.
#define WUFFS_BASE__FOURCC__ICO 0x49434F20
// Icon Vector Graphics.
#define WUFFS_BASE__FOURCC__ICVG 0x49435647
// Initialization.
#define WUFFS_BASE__FOURCC__INI 0x494E4920
// Joint Photographic Experts Group.
#define WUFFS_BASE__FOURCC__JPEG 0x4A504547
// JavaScript.
#define WUFFS_BASE__FOURCC__JS 0x4A532020
// JavaScript Object Notation.
#define WUFFS_BASE__FOURCC__JSON 0x4A534F4E
// JSON With Commas and Comments.
#define WUFFS_BASE__FOURCC__JWCC 0x4A574343
// Key-Value Pair.
#define WUFFS_BASE__FOURCC__KVP 0x4B565020
// Key-Value Pair (Key).
#define WUFFS_BASE__FOURCC__KVPK 0x4B56504B
// Key-Value Pair (Value).
#define WUFFS_BASE__FOURCC__KVPV 0x4B565056
// Lempelโ€“Ziv 4.
#define WUFFS_BASE__FOURCC__LZ4 0x4C5A3420
// Markdown.
#define WUFFS_BASE__FOURCC__MD 0x4D442020
// Modification Time.
#define WUFFS_BASE__FOURCC__MTIM 0x4D54494D
// MPEG-1 Audio Layer III.
#define WUFFS_BASE__FOURCC__MP3 0x4D503320
// Naive Image.
#define WUFFS_BASE__FOURCC__NIE 0x4E494520
// Offset (2-Dimensional).
#define WUFFS_BASE__FOURCC__OFS2 0x4F465332
// Open Type Format.
#define WUFFS_BASE__FOURCC__OTF 0x4F544620
// Portable Document Format.
#define WUFFS_BASE__FOURCC__PDF 0x50444620
// Physical Dimensions.
#define WUFFS_BASE__FOURCC__PHYD 0x50485944
// Portable Network Graphics.
#define WUFFS_BASE__FOURCC__PNG 0x504E4720
// Portable Anymap.
#define WUFFS_BASE__FOURCC__PNM 0x504E4D20
// PostScript.
#define WUFFS_BASE__FOURCC__PS 0x50532020
// Quite OK Image.
#define WUFFS_BASE__FOURCC__QOI 0x514F4920
// Random Access Compression.
#define WUFFS_BASE__FOURCC__RAC 0x52414320
// Raw.
#define WUFFS_BASE__FOURCC__RAW 0x52415720
// Resource Interchange File Format.
#define WUFFS_BASE__FOURCC__RIFF 0x52494646
// Riegeli Records.
#define WUFFS_BASE__FOURCC__RIGL 0x5249474C
// Snappy.
#define WUFFS_BASE__FOURCC__SNPY 0x534E5059
// Standard Red Green Blue (Rendering Intent).
#define WUFFS_BASE__FOURCC__SRGB 0x53524742
// Scalable Vector Graphics.
#define WUFFS_BASE__FOURCC__SVG 0x53564720
// Tape Archive.
#define WUFFS_BASE__FOURCC__TAR 0x54415220
// Text.
#define WUFFS_BASE__FOURCC__TEXT 0x54455854
// Truevision Advanced Raster Graphics Adapter.
#define WUFFS_BASE__FOURCC__TGA 0x54474120
// Tagged Image File Format.
#define WUFFS_BASE__FOURCC__TIFF 0x54494646
// Tom's Obvious Minimal Language.
#define WUFFS_BASE__FOURCC__TOML 0x544F4D4C
// Waveform.
#define WUFFS_BASE__FOURCC__WAVE 0x57415645
// Wireless Bitmap.
#define WUFFS_BASE__FOURCC__WBMP 0x57424D50
// Web Picture.
#define WUFFS_BASE__FOURCC__WEBP 0x57454250
// Web Open Font Format.
#define WUFFS_BASE__FOURCC__WOFF 0x574F4646
// Extensible Markup Language.
#define WUFFS_BASE__FOURCC__XML 0x584D4C20
// Extensible Metadata Platform.
#define WUFFS_BASE__FOURCC__XMP 0x584D5020
// Xz.
#define WUFFS_BASE__FOURCC__XZ 0x585A2020
// Zip.
#define WUFFS_BASE__FOURCC__ZIP 0x5A495020
// Zlib.
#define WUFFS_BASE__FOURCC__ZLIB 0x5A4C4942
// Zstandard.
#define WUFFS_BASE__FOURCC__ZSTD 0x5A535444
// --------
// Quirks.
#define WUFFS_BASE__QUIRK_IGNORE_CHECKSUM 1
// --------
// Flicks are a unit of time. One flick (frame-tick) is 1 / 705_600_000 of a
// second. See https://github.com/OculusVR/Flicks
typedef int64_t wuffs_base__flicks;
#define WUFFS_BASE__FLICKS_PER_SECOND ((uint64_t)705600000)
#define WUFFS_BASE__FLICKS_PER_MILLISECOND ((uint64_t)705600)
// ---------------- Numeric Types
// The helpers below are functions, instead of macros, because their arguments
// can be an expression that we shouldn't evaluate more than once.
//
// They are static, so that linking multiple wuffs .o files won't complain about
// duplicate function definitions.
//
// They are explicitly marked inline, even if modern compilers don't use the
// inline attribute to guide optimizations such as inlining, to avoid the
// -Wunused-function warning, and we like to compile with -Wall -Werror.
static inline int8_t //
wuffs_base__i8__min(int8_t x, int8_t y) {
return x < y ? x : y;
}
static inline int8_t //
wuffs_base__i8__max(int8_t x, int8_t y) {
return x > y ? x : y;
}
static inline int16_t //
wuffs_base__i16__min(int16_t x, int16_t y) {
return x < y ? x : y;
}
static inline int16_t //
wuffs_base__i16__max(int16_t x, int16_t y) {
return x > y ? x : y;
}
static inline int32_t //
wuffs_base__i32__min(int32_t x, int32_t y) {
return x < y ? x : y;
}
static inline int32_t //
wuffs_base__i32__max(int32_t x, int32_t y) {
return x > y ? x : y;
}
static inline int64_t //
wuffs_base__i64__min(int64_t x, int64_t y) {
return x < y ? x : y;
}
static inline int64_t //
wuffs_base__i64__max(int64_t x, int64_t y) {
return x > y ? x : y;
}
static inline uint8_t //
wuffs_base__u8__min(uint8_t x, uint8_t y) {
return x < y ? x : y;
}
static inline uint8_t //
wuffs_base__u8__max(uint8_t x, uint8_t y) {
return x > y ? x : y;
}
static inline uint16_t //
wuffs_base__u16__min(uint16_t x, uint16_t y) {
return x < y ? x : y;
}
static inline uint16_t //
wuffs_base__u16__max(uint16_t x, uint16_t y) {
return x > y ? x : y;
}
static inline uint32_t //
wuffs_base__u32__min(uint32_t x, uint32_t y) {
return x < y ? x : y;
}
static inline uint32_t //
wuffs_base__u32__max(uint32_t x, uint32_t y) {
return x > y ? x : y;
}
static inline uint64_t //
wuffs_base__u64__min(uint64_t x, uint64_t y) {
return x < y ? x : y;
}
static inline uint64_t //
wuffs_base__u64__max(uint64_t x, uint64_t y) {
return x > y ? x : y;
}
// --------
static inline uint8_t //
wuffs_base__u8__rotate_left(uint8_t x, uint32_t n) {
n &= 7;
return ((uint8_t)(x << n)) | ((uint8_t)(x >> (8 - n)));
}
static inline uint8_t //
wuffs_base__u8__rotate_right(uint8_t x, uint32_t n) {
n &= 7;
return ((uint8_t)(x >> n)) | ((uint8_t)(x << (8 - n)));
}
static inline uint16_t //
wuffs_base__u16__rotate_left(uint16_t x, uint32_t n) {
n &= 15;
return ((uint16_t)(x << n)) | ((uint16_t)(x >> (16 - n)));
}
static inline uint16_t //
wuffs_base__u16__rotate_right(uint16_t x, uint32_t n) {
n &= 15;
return ((uint16_t)(x >> n)) | ((uint16_t)(x << (16 - n)));
}
static inline uint32_t //
wuffs_base__u32__rotate_left(uint32_t x, uint32_t n) {
n &= 31;
return ((uint32_t)(x << n)) | ((uint32_t)(x >> (32 - n)));
}
static inline uint32_t //
wuffs_base__u32__rotate_right(uint32_t x, uint32_t n) {
n &= 31;
return ((uint32_t)(x >> n)) | ((uint32_t)(x << (32 - n)));
}
static inline uint64_t //
wuffs_base__u64__rotate_left(uint64_t x, uint32_t n) {
n &= 63;
return ((uint64_t)(x << n)) | ((uint64_t)(x >> (64 - n)));
}
static inline uint64_t //
wuffs_base__u64__rotate_right(uint64_t x, uint32_t n) {
n &= 63;
return ((uint64_t)(x >> n)) | ((uint64_t)(x << (64 - n)));
}
// --------
// Saturating arithmetic (sat_add, sat_sub) branchless bit-twiddling algorithms
// are per https://locklessinc.com/articles/sat_arithmetic/
//
// It is important that the underlying types are unsigned integers, as signed
// integer arithmetic overflow is undefined behavior in C.
static inline uint8_t //
wuffs_base__u8__sat_add(uint8_t x, uint8_t y) {
uint8_t res = (uint8_t)(x + y);
res |= (uint8_t)(-(res < x));
return res;
}
static inline uint8_t //
wuffs_base__u8__sat_sub(uint8_t x, uint8_t y) {
uint8_t res = (uint8_t)(x - y);
res &= (uint8_t)(-(res <= x));
return res;
}
static inline uint16_t //
wuffs_base__u16__sat_add(uint16_t x, uint16_t y) {
uint16_t res = (uint16_t)(x + y);
res |= (uint16_t)(-(res < x));
return res;
}
static inline uint16_t //
wuffs_base__u16__sat_sub(uint16_t x, uint16_t y) {
uint16_t res = (uint16_t)(x - y);
res &= (uint16_t)(-(res <= x));
return res;
}
static inline uint32_t //
wuffs_base__u32__sat_add(uint32_t x, uint32_t y) {
uint32_t res = (uint32_t)(x + y);
res |= (uint32_t)(-(res < x));
return res;
}
static inline uint32_t //
wuffs_base__u32__sat_sub(uint32_t x, uint32_t y) {
uint32_t res = (uint32_t)(x - y);
res &= (uint32_t)(-(res <= x));
return res;
}
static inline uint64_t //
wuffs_base__u64__sat_add(uint64_t x, uint64_t y) {
uint64_t res = (uint64_t)(x + y);
res |= (uint64_t)(-(res < x));
return res;
}
static inline uint64_t //
wuffs_base__u64__sat_sub(uint64_t x, uint64_t y) {
uint64_t res = (uint64_t)(x - y);
res &= (uint64_t)(-(res <= x));
return res;
}
// --------
typedef struct wuffs_base__multiply_u64__output__struct {
uint64_t lo;
uint64_t hi;
} wuffs_base__multiply_u64__output;
// wuffs_base__multiply_u64 returns x*y as a 128-bit value.
//
// The maximum inclusive output hi_lo is 0xFFFFFFFFFFFFFFFE_0000000000000001.
static inline wuffs_base__multiply_u64__output //
wuffs_base__multiply_u64(uint64_t x, uint64_t y) {
#if defined(__SIZEOF_INT128__)
__uint128_t z = ((__uint128_t)x) * ((__uint128_t)y);
wuffs_base__multiply_u64__output o;
o.lo = ((uint64_t)(z));
o.hi = ((uint64_t)(z >> 64));
return o;
#else
// TODO: consider using the _mul128 intrinsic if defined(_MSC_VER).
uint64_t x0 = x & 0xFFFFFFFF;
uint64_t x1 = x >> 32;
uint64_t y0 = y & 0xFFFFFFFF;
uint64_t y1 = y >> 32;
uint64_t w0 = x0 * y0;
uint64_t t = (x1 * y0) + (w0 >> 32);
uint64_t w1 = t & 0xFFFFFFFF;
uint64_t w2 = t >> 32;
w1 += x0 * y1;
wuffs_base__multiply_u64__output o;
o.lo = x * y;
o.hi = (x1 * y1) + w2 + (w1 >> 32);
return o;
#endif
}
// --------
// The "defined(__clang__)" isn't redundant. While vanilla clang defines
// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not.
#if (defined(__GNUC__) || defined(__clang__)) && (__SIZEOF_LONG__ == 8)
static inline uint32_t //
wuffs_base__count_leading_zeroes_u64(uint64_t u) {
return u ? ((uint32_t)(__builtin_clzl(u))) : 64u;
}
#else
// TODO: consider using the _BitScanReverse intrinsic if defined(_MSC_VER).
static inline uint32_t //
wuffs_base__count_leading_zeroes_u64(uint64_t u) {
if (u == 0) {
return 64;
}
uint32_t n = 0;
if ((u >> 32) == 0) {
n |= 32;
u <<= 32;
}
if ((u >> 48) == 0) {
n |= 16;
u <<= 16;
}
if ((u >> 56) == 0) {
n |= 8;
u <<= 8;
}
if ((u >> 60) == 0) {
n |= 4;
u <<= 4;
}
if ((u >> 62) == 0) {
n |= 2;
u <<= 2;
}
if ((u >> 63) == 0) {
n |= 1;
u <<= 1;
}
return n;
}
#endif // (defined(__GNUC__) || defined(__clang__)) && (__SIZEOF_LONG__ == 8)
// --------
// Normally, the wuffs_base__peek_etc and wuffs_base__poke_etc implementations
// are both (1) correct regardless of CPU endianness and (2) very fast (e.g. an
// inlined wuffs_base__peek_u32le__no_bounds_check call, in an optimized clang
// or gcc build, is a single MOV instruction on x86_64).
//
// However, the endian-agnostic implementations are slow on Microsoft's C
// compiler (MSC). Alternative memcpy-based implementations restore speed, but
// they are only correct on little-endian CPU architectures. Defining
// WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE opts in to these implementations.
//
// https://godbolt.org/z/q4MfjzTPh
#if defined(_MSC_VER) && !defined(__clang__) && \
(defined(_M_ARM64) || defined(_M_X64))
#define WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE
#endif
#define wuffs_base__peek_u8be__no_bounds_check \
wuffs_base__peek_u8__no_bounds_check
#define wuffs_base__peek_u8le__no_bounds_check \
wuffs_base__peek_u8__no_bounds_check
static inline uint8_t //
wuffs_base__peek_u8__no_bounds_check(const uint8_t* p) {
return p[0];
}
static inline uint16_t //
wuffs_base__peek_u16be__no_bounds_check(const uint8_t* p) {
#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE)
uint16_t x;
memcpy(&x, p, 2);
return _byteswap_ushort(x);
#else
return (uint16_t)(((uint16_t)(p[0]) << 8) | ((uint16_t)(p[1]) << 0));
#endif
}
static inline uint16_t //
wuffs_base__peek_u16le__no_bounds_check(const uint8_t* p) {
#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE)
uint16_t x;
memcpy(&x, p, 2);
return x;
#else
return (uint16_t)(((uint16_t)(p[0]) << 0) | ((uint16_t)(p[1]) << 8));
#endif
}
static inline uint32_t //
wuffs_base__peek_u24be__no_bounds_check(const uint8_t* p) {
return ((uint32_t)(p[0]) << 16) | ((uint32_t)(p[1]) << 8) |
((uint32_t)(p[2]) << 0);
}
static inline uint32_t //
wuffs_base__peek_u24le__no_bounds_check(const uint8_t* p) {
return ((uint32_t)(p[0]) << 0) | ((uint32_t)(p[1]) << 8) |
((uint32_t)(p[2]) << 16);
}
static inline uint32_t //
wuffs_base__peek_u32be__no_bounds_check(const uint8_t* p) {
#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE)
uint32_t x;
memcpy(&x, p, 4);
return _byteswap_ulong(x);
#else
return ((uint32_t)(p[0]) << 24) | ((uint32_t)(p[1]) << 16) |
((uint32_t)(p[2]) << 8) | ((uint32_t)(p[3]) << 0);
#endif
}
static inline uint32_t //
wuffs_base__peek_u32le__no_bounds_check(const uint8_t* p) {
#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE)
uint32_t x;
memcpy(&x, p, 4);
return x;
#else
return ((uint32_t)(p[0]) << 0) | ((uint32_t)(p[1]) << 8) |
((uint32_t)(p[2]) << 16) | ((uint32_t)(p[3]) << 24);
#endif
}
static inline uint64_t //
wuffs_base__peek_u40be__no_bounds_check(const uint8_t* p) {
return ((uint64_t)(p[0]) << 32) | ((uint64_t)(p[1]) << 24) |
((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 8) |
((uint64_t)(p[4]) << 0);
}
static inline uint64_t //
wuffs_base__peek_u40le__no_bounds_check(const uint8_t* p) {
return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) |
((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) |
((uint64_t)(p[4]) << 32);
}
static inline uint64_t //
wuffs_base__peek_u48be__no_bounds_check(const uint8_t* p) {
return ((uint64_t)(p[0]) << 40) | ((uint64_t)(p[1]) << 32) |
((uint64_t)(p[2]) << 24) | ((uint64_t)(p[3]) << 16) |
((uint64_t)(p[4]) << 8) | ((uint64_t)(p[5]) << 0);
}
static inline uint64_t //
wuffs_base__peek_u48le__no_bounds_check(const uint8_t* p) {
return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) |
((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) |
((uint64_t)(p[4]) << 32) | ((uint64_t)(p[5]) << 40);
}
static inline uint64_t //
wuffs_base__peek_u56be__no_bounds_check(const uint8_t* p) {
return ((uint64_t)(p[0]) << 48) | ((uint64_t)(p[1]) << 40) |
((uint64_t)(p[2]) << 32) | ((uint64_t)(p[3]) << 24) |
((uint64_t)(p[4]) << 16) | ((uint64_t)(p[5]) << 8) |
((uint64_t)(p[6]) << 0);
}
static inline uint64_t //
wuffs_base__peek_u56le__no_bounds_check(const uint8_t* p) {
return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) |
((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) |
((uint64_t)(p[4]) << 32) | ((uint64_t)(p[5]) << 40) |
((uint64_t)(p[6]) << 48);
}
static inline uint64_t //
wuffs_base__peek_u64be__no_bounds_check(const uint8_t* p) {
#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE)
uint64_t x;
memcpy(&x, p, 8);
return _byteswap_uint64(x);
#else
return ((uint64_t)(p[0]) << 56) | ((uint64_t)(p[1]) << 48) |
((uint64_t)(p[2]) << 40) | ((uint64_t)(p[3]) << 32) |
((uint64_t)(p[4]) << 24) | ((uint64_t)(p[5]) << 16) |
((uint64_t)(p[6]) << 8) | ((uint64_t)(p[7]) << 0);
#endif
}
static inline uint64_t //
wuffs_base__peek_u64le__no_bounds_check(const uint8_t* p) {
#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE)
uint64_t x;
memcpy(&x, p, 8);
return x;
#else
return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) |
((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) |
((uint64_t)(p[4]) << 32) | ((uint64_t)(p[5]) << 40) |
((uint64_t)(p[6]) << 48) | ((uint64_t)(p[7]) << 56);
#endif
}
// --------
#define wuffs_base__poke_u8be__no_bounds_check \
wuffs_base__poke_u8__no_bounds_check
#define wuffs_base__poke_u8le__no_bounds_check \
wuffs_base__poke_u8__no_bounds_check
static inline void //
wuffs_base__poke_u8__no_bounds_check(uint8_t* p, uint8_t x) {
p[0] = x;
}
static inline void //
wuffs_base__poke_u16be__no_bounds_check(uint8_t* p, uint16_t x) {
p[0] = (uint8_t)(x >> 8);
p[1] = (uint8_t)(x >> 0);
}
static inline void //
wuffs_base__poke_u16le__no_bounds_check(uint8_t* p, uint16_t x) {
#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) || \
(defined(__GNUC__) && !defined(__clang__) && defined(__x86_64__))
// This seems to perform better on gcc 10 (but not clang 9). Clang also
// defines "__GNUC__".
memcpy(p, &x, 2);
#else
p[0] = (uint8_t)(x >> 0);
p[1] = (uint8_t)(x >> 8);
#endif
}
static inline void //
wuffs_base__poke_u24be__no_bounds_check(uint8_t* p, uint32_t x) {
p[0] = (uint8_t)(x >> 16);
p[1] = (uint8_t)(x >> 8);
p[2] = (uint8_t)(x >> 0);
}
static inline void //
wuffs_base__poke_u24le__no_bounds_check(uint8_t* p, uint32_t x) {
p[0] = (uint8_t)(x >> 0);
p[1] = (uint8_t)(x >> 8);
p[2] = (uint8_t)(x >> 16);
}
static inline void //
wuffs_base__poke_u32be__no_bounds_check(uint8_t* p, uint32_t x) {
p[0] = (uint8_t)(x >> 24);
p[1] = (uint8_t)(x >> 16);
p[2] = (uint8_t)(x >> 8);
p[3] = (uint8_t)(x >> 0);
}
static inline void //
wuffs_base__poke_u32le__no_bounds_check(uint8_t* p, uint32_t x) {
#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) || \
(defined(__GNUC__) && !defined(__clang__) && defined(__x86_64__))
// This seems to perform better on gcc 10 (but not clang 9). Clang also
// defines "__GNUC__".
memcpy(p, &x, 4);
#else
p[0] = (uint8_t)(x >> 0);
p[1] = (uint8_t)(x >> 8);
p[2] = (uint8_t)(x >> 16);
p[3] = (uint8_t)(x >> 24);
#endif
}
static inline void //
wuffs_base__poke_u40be__no_bounds_check(uint8_t* p, uint64_t x) {
p[0] = (uint8_t)(x >> 32);
p[1] = (uint8_t)(x >> 24);
p[2] = (uint8_t)(x >> 16);
p[3] = (uint8_t)(x >> 8);
p[4] = (uint8_t)(x >> 0);
}
static inline void //
wuffs_base__poke_u40le__no_bounds_check(uint8_t* p, uint64_t x) {
p[0] = (uint8_t)(x >> 0);
p[1] = (uint8_t)(x >> 8);
p[2] = (uint8_t)(x >> 16);
p[3] = (uint8_t)(x >> 24);
p[4] = (uint8_t)(x >> 32);
}
static inline void //
wuffs_base__poke_u48be__no_bounds_check(uint8_t* p, uint64_t x) {
p[0] = (uint8_t)(x >> 40);
p[1] = (uint8_t)(x >> 32);
p[2] = (uint8_t)(x >> 24);
p[3] = (uint8_t)(x >> 16);
p[4] = (uint8_t)(x >> 8);
p[5] = (uint8_t)(x >> 0);
}
static inline void //
wuffs_base__poke_u48le__no_bounds_check(uint8_t* p, uint64_t x) {
p[0] = (uint8_t)(x >> 0);
p[1] = (uint8_t)(x >> 8);
p[2] = (uint8_t)(x >> 16);
p[3] = (uint8_t)(x >> 24);
p[4] = (uint8_t)(x >> 32);
p[5] = (uint8_t)(x >> 40);
}
static inline void //
wuffs_base__poke_u56be__no_bounds_check(uint8_t* p, uint64_t x) {
p[0] = (uint8_t)(x >> 48);
p[1] = (uint8_t)(x >> 40);
p[2] = (uint8_t)(x >> 32);
p[3] = (uint8_t)(x >> 24);
p[4] = (uint8_t)(x >> 16);
p[5] = (uint8_t)(x >> 8);
p[6] = (uint8_t)(x >> 0);
}
static inline void //
wuffs_base__poke_u56le__no_bounds_check(uint8_t* p, uint64_t x) {
p[0] = (uint8_t)(x >> 0);
p[1] = (uint8_t)(x >> 8);
p[2] = (uint8_t)(x >> 16);
p[3] = (uint8_t)(x >> 24);
p[4] = (uint8_t)(x >> 32);
p[5] = (uint8_t)(x >> 40);
p[6] = (uint8_t)(x >> 48);
}
static inline void //
wuffs_base__poke_u64be__no_bounds_check(uint8_t* p, uint64_t x) {
p[0] = (uint8_t)(x >> 56);
p[1] = (uint8_t)(x >> 48);
p[2] = (uint8_t)(x >> 40);
p[3] = (uint8_t)(x >> 32);
p[4] = (uint8_t)(x >> 24);
p[5] = (uint8_t)(x >> 16);
p[6] = (uint8_t)(x >> 8);
p[7] = (uint8_t)(x >> 0);
}
static inline void //
wuffs_base__poke_u64le__no_bounds_check(uint8_t* p, uint64_t x) {
#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) || \
(defined(__GNUC__) && !defined(__clang__) && defined(__x86_64__))
// This seems to perform better on gcc 10 (but not clang 9). Clang also
// defines "__GNUC__".
memcpy(p, &x, 8);
#else
p[0] = (uint8_t)(x >> 0);
p[1] = (uint8_t)(x >> 8);
p[2] = (uint8_t)(x >> 16);
p[3] = (uint8_t)(x >> 24);
p[4] = (uint8_t)(x >> 32);
p[5] = (uint8_t)(x >> 40);
p[6] = (uint8_t)(x >> 48);
p[7] = (uint8_t)(x >> 56);
#endif
}
// --------
// Load and Store functions are deprecated. Use Peek and Poke instead.
#define wuffs_base__load_u8__no_bounds_check \
wuffs_base__peek_u8__no_bounds_check
#define wuffs_base__load_u16be__no_bounds_check \
wuffs_base__peek_u16be__no_bounds_check
#define wuffs_base__load_u16le__no_bounds_check \
wuffs_base__peek_u16le__no_bounds_check
#define wuffs_base__load_u24be__no_bounds_check \
wuffs_base__peek_u24be__no_bounds_check
#define wuffs_base__load_u24le__no_bounds_check \
wuffs_base__peek_u24le__no_bounds_check
#define wuffs_base__load_u32be__no_bounds_check \
wuffs_base__peek_u32be__no_bounds_check
#define wuffs_base__load_u32le__no_bounds_check \
wuffs_base__peek_u32le__no_bounds_check
#define wuffs_base__load_u40be__no_bounds_check \
wuffs_base__peek_u40be__no_bounds_check
#define wuffs_base__load_u40le__no_bounds_check \
wuffs_base__peek_u40le__no_bounds_check
#define wuffs_base__load_u48be__no_bounds_check \
wuffs_base__peek_u48be__no_bounds_check
#define wuffs_base__load_u48le__no_bounds_check \
wuffs_base__peek_u48le__no_bounds_check
#define wuffs_base__load_u56be__no_bounds_check \
wuffs_base__peek_u56be__no_bounds_check
#define wuffs_base__load_u56le__no_bounds_check \
wuffs_base__peek_u56le__no_bounds_check
#define wuffs_base__load_u64be__no_bounds_check \
wuffs_base__peek_u64be__no_bounds_check
#define wuffs_base__load_u64le__no_bounds_check \
wuffs_base__peek_u64le__no_bounds_check
#define wuffs_base__store_u8__no_bounds_check \
wuffs_base__poke_u8__no_bounds_check
#define wuffs_base__store_u16be__no_bounds_check \
wuffs_base__poke_u16be__no_bounds_check
#define wuffs_base__store_u16le__no_bounds_check \
wuffs_base__poke_u16le__no_bounds_check
#define wuffs_base__store_u24be__no_bounds_check \
wuffs_base__poke_u24be__no_bounds_check
#define wuffs_base__store_u24le__no_bounds_check \
wuffs_base__poke_u24le__no_bounds_check
#define wuffs_base__store_u32be__no_bounds_check \
wuffs_base__poke_u32be__no_bounds_check
#define wuffs_base__store_u32le__no_bounds_check \
wuffs_base__poke_u32le__no_bounds_check
#define wuffs_base__store_u40be__no_bounds_check \
wuffs_base__poke_u40be__no_bounds_check
#define wuffs_base__store_u40le__no_bounds_check \
wuffs_base__poke_u40le__no_bounds_check
#define wuffs_base__store_u48be__no_bounds_check \
wuffs_base__poke_u48be__no_bounds_check
#define wuffs_base__store_u48le__no_bounds_check \
wuffs_base__poke_u48le__no_bounds_check
#define wuffs_base__store_u56be__no_bounds_check \
wuffs_base__poke_u56be__no_bounds_check
#define wuffs_base__store_u56le__no_bounds_check \
wuffs_base__poke_u56le__no_bounds_check
#define wuffs_base__store_u64be__no_bounds_check \
wuffs_base__poke_u64be__no_bounds_check
#define wuffs_base__store_u64le__no_bounds_check \
wuffs_base__poke_u64le__no_bounds_check
// ---------------- Slices and Tables
// WUFFS_BASE__SLICE is a 1-dimensional buffer.
//
// len measures a number of elements, not necessarily a size in bytes.
//
// A value with all fields NULL or zero is a valid, empty slice.
#define WUFFS_BASE__SLICE(T) \
struct { \
T* ptr; \
size_t len; \
}
// WUFFS_BASE__TABLE is a 2-dimensional buffer.
//
// width, height and stride measure a number of elements, not necessarily a
// size in bytes.
//
// A value with all fields NULL or zero is a valid, empty table.
#define WUFFS_BASE__TABLE(T) \
struct { \
T* ptr; \
size_t width; \
size_t height; \
size_t stride; \
}
typedef WUFFS_BASE__SLICE(uint8_t) wuffs_base__slice_u8;
typedef WUFFS_BASE__SLICE(uint16_t) wuffs_base__slice_u16;
typedef WUFFS_BASE__SLICE(uint32_t) wuffs_base__slice_u32;
typedef WUFFS_BASE__SLICE(uint64_t) wuffs_base__slice_u64;
typedef WUFFS_BASE__TABLE(uint8_t) wuffs_base__table_u8;
typedef WUFFS_BASE__TABLE(uint16_t) wuffs_base__table_u16;
typedef WUFFS_BASE__TABLE(uint32_t) wuffs_base__table_u32;
typedef WUFFS_BASE__TABLE(uint64_t) wuffs_base__table_u64;
static inline wuffs_base__slice_u8 //
wuffs_base__make_slice_u8(uint8_t* ptr, size_t len) {
wuffs_base__slice_u8 ret;
ret.ptr = ptr;
ret.len = len;
return ret;
}
static inline wuffs_base__slice_u16 //
wuffs_base__make_slice_u16(uint16_t* ptr, size_t len) {
wuffs_base__slice_u16 ret;
ret.ptr = ptr;
ret.len = len;
return ret;
}
static inline wuffs_base__slice_u32 //
wuffs_base__make_slice_u32(uint32_t* ptr, size_t len) {
wuffs_base__slice_u32 ret;
ret.ptr = ptr;
ret.len = len;
return ret;
}
static inline wuffs_base__slice_u64 //
wuffs_base__make_slice_u64(uint64_t* ptr, size_t len) {
wuffs_base__slice_u64 ret;
ret.ptr = ptr;
ret.len = len;
return ret;
}
static inline wuffs_base__slice_u8 //
wuffs_base__make_slice_u8_ij(uint8_t* ptr, size_t i, size_t j) {
wuffs_base__slice_u8 ret;
ret.ptr = ptr + i;
ret.len = (j >= i) ? (j - i) : 0;
return ret;
}
static inline wuffs_base__slice_u16 //
wuffs_base__make_slice_u16_ij(uint16_t* ptr, size_t i, size_t j) {
wuffs_base__slice_u16 ret;
ret.ptr = ptr + i;
ret.len = (j >= i) ? (j - i) : 0;
return ret;
}
static inline wuffs_base__slice_u32 //
wuffs_base__make_slice_u32_ij(uint32_t* ptr, size_t i, size_t j) {
wuffs_base__slice_u32 ret;
ret.ptr = ptr + i;
ret.len = (j >= i) ? (j - i) : 0;
return ret;
}
static inline wuffs_base__slice_u64 //
wuffs_base__make_slice_u64_ij(uint64_t* ptr, size_t i, size_t j) {
wuffs_base__slice_u64 ret;
ret.ptr = ptr + i;
ret.len = (j >= i) ? (j - i) : 0;
return ret;
}
static inline wuffs_base__slice_u8 //
wuffs_base__empty_slice_u8() {
wuffs_base__slice_u8 ret;
ret.ptr = NULL;
ret.len = 0;
return ret;
}
static inline wuffs_base__slice_u16 //
wuffs_base__empty_slice_u16() {
wuffs_base__slice_u16 ret;
ret.ptr = NULL;
ret.len = 0;
return ret;
}
static inline wuffs_base__slice_u32 //
wuffs_base__empty_slice_u32() {
wuffs_base__slice_u32 ret;
ret.ptr = NULL;
ret.len = 0;
return ret;
}
static inline wuffs_base__slice_u64 //
wuffs_base__empty_slice_u64() {
wuffs_base__slice_u64 ret;
ret.ptr = NULL;
ret.len = 0;
return ret;
}
static inline wuffs_base__table_u8 //
wuffs_base__make_table_u8(uint8_t* ptr,
size_t width,
size_t height,
size_t stride) {
wuffs_base__table_u8 ret;
ret.ptr = ptr;
ret.width = width;
ret.height = height;
ret.stride = stride;
return ret;
}
static inline wuffs_base__table_u16 //
wuffs_base__make_table_u16(uint16_t* ptr,
size_t width,
size_t height,
size_t stride) {
wuffs_base__table_u16 ret;
ret.ptr = ptr;
ret.width = width;
ret.height = height;
ret.stride = stride;
return ret;
}
static inline wuffs_base__table_u32 //
wuffs_base__make_table_u32(uint32_t* ptr,
size_t width,
size_t height,
size_t stride) {
wuffs_base__table_u32 ret;
ret.ptr = ptr;
ret.width = width;
ret.height = height;
ret.stride = stride;
return ret;
}
static inline wuffs_base__table_u64 //
wuffs_base__make_table_u64(uint64_t* ptr,
size_t width,
size_t height,
size_t stride) {
wuffs_base__table_u64 ret;
ret.ptr = ptr;
ret.width = width;
ret.height = height;
ret.stride = stride;
return ret;
}
static inline wuffs_base__table_u8 //
wuffs_base__empty_table_u8() {
wuffs_base__table_u8 ret;
ret.ptr = NULL;
ret.width = 0;
ret.height = 0;
ret.stride = 0;
return ret;
}
static inline wuffs_base__table_u16 //
wuffs_base__empty_table_u16() {
wuffs_base__table_u16 ret;
ret.ptr = NULL;
ret.width = 0;
ret.height = 0;
ret.stride = 0;
return ret;
}
static inline wuffs_base__table_u32 //
wuffs_base__empty_table_u32() {
wuffs_base__table_u32 ret;
ret.ptr = NULL;
ret.width = 0;
ret.height = 0;
ret.stride = 0;
return ret;
}
static inline wuffs_base__table_u64 //
wuffs_base__empty_table_u64() {
wuffs_base__table_u64 ret;
ret.ptr = NULL;
ret.width = 0;
ret.height = 0;
ret.stride = 0;
return ret;
}
static inline bool //
wuffs_base__slice_u8__overlaps(wuffs_base__slice_u8 s, wuffs_base__slice_u8 t) {
return ((s.ptr <= t.ptr) && (t.ptr < (s.ptr + s.len))) ||
((t.ptr <= s.ptr) && (s.ptr < (t.ptr + t.len)));
}
// wuffs_base__slice_u8__subslice_i returns s[i:].
//
// It returns an empty slice if i is out of bounds.
static inline wuffs_base__slice_u8 //
wuffs_base__slice_u8__subslice_i(wuffs_base__slice_u8 s, uint64_t i) {
if ((i <= SIZE_MAX) && (i <= s.len)) {
return wuffs_base__make_slice_u8(s.ptr + i, ((size_t)(s.len - i)));
}
return wuffs_base__make_slice_u8(NULL, 0);
}
// wuffs_base__slice_u8__subslice_j returns s[:j].
//
// It returns an empty slice if j is out of bounds.
static inline wuffs_base__slice_u8 //
wuffs_base__slice_u8__subslice_j(wuffs_base__slice_u8 s, uint64_t j) {
if ((j <= SIZE_MAX) && (j <= s.len)) {
return wuffs_base__make_slice_u8(s.ptr, ((size_t)j));
}
return wuffs_base__make_slice_u8(NULL, 0);
}
// wuffs_base__slice_u8__subslice_ij returns s[i:j].
//
// It returns an empty slice if i or j is out of bounds.
static inline wuffs_base__slice_u8 //
wuffs_base__slice_u8__subslice_ij(wuffs_base__slice_u8 s,
uint64_t i,
uint64_t j) {
if ((i <= j) && (j <= SIZE_MAX) && (j <= s.len)) {
return wuffs_base__make_slice_u8(s.ptr + i, ((size_t)(j - i)));
}
return wuffs_base__make_slice_u8(NULL, 0);
}
// wuffs_base__table_u8__subtable_ij returns t[ix:jx, iy:jy].
//
// It returns an empty table if i or j is out of bounds.
static inline wuffs_base__table_u8 //
wuffs_base__table_u8__subtable_ij(wuffs_base__table_u8 t,
uint64_t ix,
uint64_t iy,
uint64_t jx,
uint64_t jy) {
if ((ix <= jx) && (jx <= SIZE_MAX) && (jx <= t.width) && //
(iy <= jy) && (jy <= SIZE_MAX) && (jy <= t.height)) {
return wuffs_base__make_table_u8(t.ptr + ix + (iy * t.stride), //
((size_t)(jx - ix)), //
((size_t)(jy - iy)), //
t.stride); //
}
return wuffs_base__make_table_u8(NULL, 0, 0, 0);
}
// wuffs_base__table__flattened_length returns the number of elements covered
// by the 1-dimensional span that backs a 2-dimensional table. This counts the
// elements inside the table and, when width != stride, the elements outside
// the table but between its rows.
//
// For example, consider a width 10, height 4, stride 10 table. Mark its first
// and last (inclusive) elements with 'a' and 'z'. This function returns 40.
//
// a123456789
// 0123456789
// 0123456789
// 012345678z
//
// Now consider the sub-table of that from (2, 1) inclusive to (8, 4) exclusive.
//
// a123456789
// 01iiiiiioo
// ooiiiiiioo
// ooiiiiii8z
//
// This function (called with width 6, height 3, stride 10) returns 26: 18 'i'
// inside elements plus 8 'o' outside elements. Note that 26 is less than a
// naive (height * stride = 30) computation. Indeed, advancing 29 elements from
// the first 'i' would venture past 'z', out of bounds of the original table.
//
// It does not check for overflow, but if the arguments come from a table that
// exists in memory and each element occupies a positive number of bytes then
// the result should be bounded by the amount of allocatable memory (which
// shouldn't overflow SIZE_MAX).
static inline size_t //
wuffs_base__table__flattened_length(size_t width,
size_t height,
size_t stride) {
if (height == 0) {
return 0;
}
return ((height - 1) * stride) + width;
}
// ---------------- Magic Numbers
// wuffs_base__magic_number_guess_fourcc guesses the file format of some data,
// given its starting bytes (the prefix_data argument) and whether or not there
// may be further bytes (the prefix_closed argument; true means that
// prefix_data is the entire data).
//
// It returns a positive FourCC value on success.
//
// It returns zero if nothing matches its hard-coded list of 'magic numbers'.
//
// It returns a negative value if prefix_closed is false and a longer prefix is
// required for a conclusive result. For example, a single 'B' byte (without
// further data) is not enough to discriminate the BMP and BPG image file
// formats. Similarly, a single '\xFF' byte might be the start of JPEG data or
// it might be the start of some other binary data.
//
// It does not do a full validity check. Like any guess made from a short
// prefix of the data, it may return false positives. Data that starts with 99
// bytes of valid JPEG followed by corruption or truncation is an invalid JPEG
// image overall, but this function will still return WUFFS_BASE__FOURCC__JPEG.
//
// Another source of false positives is that some 'magic numbers' are valid
// ASCII data. A file starting with "GIF87a and GIF89a are the two versions of
// GIF" will match GIF's 'magic number' even if it's plain text, not an image.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__MAGIC sub-module, not just
// WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC int32_t //
wuffs_base__magic_number_guess_fourcc(wuffs_base__slice_u8 prefix_data,
bool prefix_closed);
// ---------------- Ranges and Rects
// See https://github.com/google/wuffs/blob/main/doc/note/ranges-and-rects.md
typedef struct wuffs_base__range_ii_u32__struct {
uint32_t min_incl;
uint32_t max_incl;
#ifdef __cplusplus
inline bool is_empty() const;
inline bool equals(wuffs_base__range_ii_u32__struct s) const;
inline wuffs_base__range_ii_u32__struct intersect(
wuffs_base__range_ii_u32__struct s) const;
inline wuffs_base__range_ii_u32__struct unite(
wuffs_base__range_ii_u32__struct s) const;
inline bool contains(uint32_t x) const;
inline bool contains_range(wuffs_base__range_ii_u32__struct s) const;
#endif // __cplusplus
} wuffs_base__range_ii_u32;
static inline wuffs_base__range_ii_u32 //
wuffs_base__empty_range_ii_u32() {
wuffs_base__range_ii_u32 ret;
ret.min_incl = 0;
ret.max_incl = 0;
return ret;
}
static inline wuffs_base__range_ii_u32 //
wuffs_base__make_range_ii_u32(uint32_t min_incl, uint32_t max_incl) {
wuffs_base__range_ii_u32 ret;
ret.min_incl = min_incl;
ret.max_incl = max_incl;
return ret;
}
static inline bool //
wuffs_base__range_ii_u32__is_empty(const wuffs_base__range_ii_u32* r) {
return r->min_incl > r->max_incl;
}
static inline bool //
wuffs_base__range_ii_u32__equals(const wuffs_base__range_ii_u32* r,
wuffs_base__range_ii_u32 s) {
return (r->min_incl == s.min_incl && r->max_incl == s.max_incl) ||
(wuffs_base__range_ii_u32__is_empty(r) &&
wuffs_base__range_ii_u32__is_empty(&s));
}
static inline wuffs_base__range_ii_u32 //
wuffs_base__range_ii_u32__intersect(const wuffs_base__range_ii_u32* r,
wuffs_base__range_ii_u32 s) {
wuffs_base__range_ii_u32 t;
t.min_incl = wuffs_base__u32__max(r->min_incl, s.min_incl);
t.max_incl = wuffs_base__u32__min(r->max_incl, s.max_incl);
return t;
}
static inline wuffs_base__range_ii_u32 //
wuffs_base__range_ii_u32__unite(const wuffs_base__range_ii_u32* r,
wuffs_base__range_ii_u32 s) {
if (wuffs_base__range_ii_u32__is_empty(r)) {
return s;
}
if (wuffs_base__range_ii_u32__is_empty(&s)) {
return *r;
}
wuffs_base__range_ii_u32 t;
t.min_incl = wuffs_base__u32__min(r->min_incl, s.min_incl);
t.max_incl = wuffs_base__u32__max(r->max_incl, s.max_incl);
return t;
}
static inline bool //
wuffs_base__range_ii_u32__contains(const wuffs_base__range_ii_u32* r,
uint32_t x) {
return (r->min_incl <= x) && (x <= r->max_incl);
}
static inline bool //
wuffs_base__range_ii_u32__contains_range(const wuffs_base__range_ii_u32* r,
wuffs_base__range_ii_u32 s) {
return wuffs_base__range_ii_u32__equals(
&s, wuffs_base__range_ii_u32__intersect(r, s));
}
#ifdef __cplusplus
inline bool //
wuffs_base__range_ii_u32::is_empty() const {
return wuffs_base__range_ii_u32__is_empty(this);
}
inline bool //
wuffs_base__range_ii_u32::equals(wuffs_base__range_ii_u32 s) const {
return wuffs_base__range_ii_u32__equals(this, s);
}
inline wuffs_base__range_ii_u32 //
wuffs_base__range_ii_u32::intersect(wuffs_base__range_ii_u32 s) const {
return wuffs_base__range_ii_u32__intersect(this, s);
}
inline wuffs_base__range_ii_u32 //
wuffs_base__range_ii_u32::unite(wuffs_base__range_ii_u32 s) const {
return wuffs_base__range_ii_u32__unite(this, s);
}
inline bool //
wuffs_base__range_ii_u32::contains(uint32_t x) const {
return wuffs_base__range_ii_u32__contains(this, x);
}
inline bool //
wuffs_base__range_ii_u32::contains_range(wuffs_base__range_ii_u32 s) const {
return wuffs_base__range_ii_u32__contains_range(this, s);
}
#endif // __cplusplus
// --------
typedef struct wuffs_base__range_ie_u32__struct {
uint32_t min_incl;
uint32_t max_excl;
#ifdef __cplusplus
inline bool is_empty() const;
inline bool equals(wuffs_base__range_ie_u32__struct s) const;
inline wuffs_base__range_ie_u32__struct intersect(
wuffs_base__range_ie_u32__struct s) const;
inline wuffs_base__range_ie_u32__struct unite(
wuffs_base__range_ie_u32__struct s) const;
inline bool contains(uint32_t x) const;
inline bool contains_range(wuffs_base__range_ie_u32__struct s) const;
inline uint32_t length() const;
#endif // __cplusplus
} wuffs_base__range_ie_u32;
static inline wuffs_base__range_ie_u32 //
wuffs_base__empty_range_ie_u32() {
wuffs_base__range_ie_u32 ret;
ret.min_incl = 0;
ret.max_excl = 0;
return ret;
}
static inline wuffs_base__range_ie_u32 //
wuffs_base__make_range_ie_u32(uint32_t min_incl, uint32_t max_excl) {
wuffs_base__range_ie_u32 ret;
ret.min_incl = min_incl;
ret.max_excl = max_excl;
return ret;
}
static inline bool //
wuffs_base__range_ie_u32__is_empty(const wuffs_base__range_ie_u32* r) {
return r->min_incl >= r->max_excl;
}
static inline bool //
wuffs_base__range_ie_u32__equals(const wuffs_base__range_ie_u32* r,
wuffs_base__range_ie_u32 s) {
return (r->min_incl == s.min_incl && r->max_excl == s.max_excl) ||
(wuffs_base__range_ie_u32__is_empty(r) &&
wuffs_base__range_ie_u32__is_empty(&s));
}
static inline wuffs_base__range_ie_u32 //
wuffs_base__range_ie_u32__intersect(const wuffs_base__range_ie_u32* r,
wuffs_base__range_ie_u32 s) {
wuffs_base__range_ie_u32 t;
t.min_incl = wuffs_base__u32__max(r->min_incl, s.min_incl);
t.max_excl = wuffs_base__u32__min(r->max_excl, s.max_excl);
return t;
}
static inline wuffs_base__range_ie_u32 //
wuffs_base__range_ie_u32__unite(const wuffs_base__range_ie_u32* r,
wuffs_base__range_ie_u32 s) {
if (wuffs_base__range_ie_u32__is_empty(r)) {
return s;
}
if (wuffs_base__range_ie_u32__is_empty(&s)) {
return *r;
}
wuffs_base__range_ie_u32 t;
t.min_incl = wuffs_base__u32__min(r->min_incl, s.min_incl);
t.max_excl = wuffs_base__u32__max(r->max_excl, s.max_excl);
return t;
}
static inline bool //
wuffs_base__range_ie_u32__contains(const wuffs_base__range_ie_u32* r,
uint32_t x) {
return (r->min_incl <= x) && (x < r->max_excl);
}
static inline bool //
wuffs_base__range_ie_u32__contains_range(const wuffs_base__range_ie_u32* r,
wuffs_base__range_ie_u32 s) {
return wuffs_base__range_ie_u32__equals(
&s, wuffs_base__range_ie_u32__intersect(r, s));
}
static inline uint32_t //
wuffs_base__range_ie_u32__length(const wuffs_base__range_ie_u32* r) {
return wuffs_base__u32__sat_sub(r->max_excl, r->min_incl);
}
#ifdef __cplusplus
inline bool //
wuffs_base__range_ie_u32::is_empty() const {
return wuffs_base__range_ie_u32__is_empty(this);
}
inline bool //
wuffs_base__range_ie_u32::equals(wuffs_base__range_ie_u32 s) const {
return wuffs_base__range_ie_u32__equals(this, s);
}
inline wuffs_base__range_ie_u32 //
wuffs_base__range_ie_u32::intersect(wuffs_base__range_ie_u32 s) const {
return wuffs_base__range_ie_u32__intersect(this, s);
}
inline wuffs_base__range_ie_u32 //
wuffs_base__range_ie_u32::unite(wuffs_base__range_ie_u32 s) const {
return wuffs_base__range_ie_u32__unite(this, s);
}
inline bool //
wuffs_base__range_ie_u32::contains(uint32_t x) const {
return wuffs_base__range_ie_u32__contains(this, x);
}
inline bool //
wuffs_base__range_ie_u32::contains_range(wuffs_base__range_ie_u32 s) const {
return wuffs_base__range_ie_u32__contains_range(this, s);
}
inline uint32_t //
wuffs_base__range_ie_u32::length() const {
return wuffs_base__range_ie_u32__length(this);
}
#endif // __cplusplus
// --------
typedef struct wuffs_base__range_ii_u64__struct {
uint64_t min_incl;
uint64_t max_incl;
#ifdef __cplusplus
inline bool is_empty() const;
inline bool equals(wuffs_base__range_ii_u64__struct s) const;
inline wuffs_base__range_ii_u64__struct intersect(
wuffs_base__range_ii_u64__struct s) const;
inline wuffs_base__range_ii_u64__struct unite(
wuffs_base__range_ii_u64__struct s) const;
inline bool contains(uint64_t x) const;
inline bool contains_range(wuffs_base__range_ii_u64__struct s) const;
#endif // __cplusplus
} wuffs_base__range_ii_u64;
static inline wuffs_base__range_ii_u64 //
wuffs_base__empty_range_ii_u64() {
wuffs_base__range_ii_u64 ret;
ret.min_incl = 0;
ret.max_incl = 0;
return ret;
}
static inline wuffs_base__range_ii_u64 //
wuffs_base__make_range_ii_u64(uint64_t min_incl, uint64_t max_incl) {
wuffs_base__range_ii_u64 ret;
ret.min_incl = min_incl;
ret.max_incl = max_incl;
return ret;
}
static inline bool //
wuffs_base__range_ii_u64__is_empty(const wuffs_base__range_ii_u64* r) {
return r->min_incl > r->max_incl;
}
static inline bool //
wuffs_base__range_ii_u64__equals(const wuffs_base__range_ii_u64* r,
wuffs_base__range_ii_u64 s) {
return (r->min_incl == s.min_incl && r->max_incl == s.max_incl) ||
(wuffs_base__range_ii_u64__is_empty(r) &&
wuffs_base__range_ii_u64__is_empty(&s));
}
static inline wuffs_base__range_ii_u64 //
wuffs_base__range_ii_u64__intersect(const wuffs_base__range_ii_u64* r,
wuffs_base__range_ii_u64 s) {
wuffs_base__range_ii_u64 t;
t.min_incl = wuffs_base__u64__max(r->min_incl, s.min_incl);
t.max_incl = wuffs_base__u64__min(r->max_incl, s.max_incl);
return t;
}
static inline wuffs_base__range_ii_u64 //
wuffs_base__range_ii_u64__unite(const wuffs_base__range_ii_u64* r,
wuffs_base__range_ii_u64 s) {
if (wuffs_base__range_ii_u64__is_empty(r)) {
return s;
}
if (wuffs_base__range_ii_u64__is_empty(&s)) {
return *r;
}
wuffs_base__range_ii_u64 t;
t.min_incl = wuffs_base__u64__min(r->min_incl, s.min_incl);
t.max_incl = wuffs_base__u64__max(r->max_incl, s.max_incl);
return t;
}
static inline bool //
wuffs_base__range_ii_u64__contains(const wuffs_base__range_ii_u64* r,
uint64_t x) {
return (r->min_incl <= x) && (x <= r->max_incl);
}
static inline bool //
wuffs_base__range_ii_u64__contains_range(const wuffs_base__range_ii_u64* r,
wuffs_base__range_ii_u64 s) {
return wuffs_base__range_ii_u64__equals(
&s, wuffs_base__range_ii_u64__intersect(r, s));
}
#ifdef __cplusplus
inline bool //
wuffs_base__range_ii_u64::is_empty() const {
return wuffs_base__range_ii_u64__is_empty(this);
}
inline bool //
wuffs_base__range_ii_u64::equals(wuffs_base__range_ii_u64 s) const {
return wuffs_base__range_ii_u64__equals(this, s);
}
inline wuffs_base__range_ii_u64 //
wuffs_base__range_ii_u64::intersect(wuffs_base__range_ii_u64 s) const {
return wuffs_base__range_ii_u64__intersect(this, s);
}
inline wuffs_base__range_ii_u64 //
wuffs_base__range_ii_u64::unite(wuffs_base__range_ii_u64 s) const {
return wuffs_base__range_ii_u64__unite(this, s);
}
inline bool //
wuffs_base__range_ii_u64::contains(uint64_t x) const {
return wuffs_base__range_ii_u64__contains(this, x);
}
inline bool //
wuffs_base__range_ii_u64::contains_range(wuffs_base__range_ii_u64 s) const {
return wuffs_base__range_ii_u64__contains_range(this, s);
}
#endif // __cplusplus
// --------
typedef struct wuffs_base__range_ie_u64__struct {
uint64_t min_incl;
uint64_t max_excl;
#ifdef __cplusplus
inline bool is_empty() const;
inline bool equals(wuffs_base__range_ie_u64__struct s) const;
inline wuffs_base__range_ie_u64__struct intersect(
wuffs_base__range_ie_u64__struct s) const;
inline wuffs_base__range_ie_u64__struct unite(
wuffs_base__range_ie_u64__struct s) const;
inline bool contains(uint64_t x) const;
inline bool contains_range(wuffs_base__range_ie_u64__struct s) const;
inline uint64_t length() const;
#endif // __cplusplus
} wuffs_base__range_ie_u64;
static inline wuffs_base__range_ie_u64 //
wuffs_base__empty_range_ie_u64() {
wuffs_base__range_ie_u64 ret;
ret.min_incl = 0;
ret.max_excl = 0;
return ret;
}
static inline wuffs_base__range_ie_u64 //
wuffs_base__make_range_ie_u64(uint64_t min_incl, uint64_t max_excl) {
wuffs_base__range_ie_u64 ret;
ret.min_incl = min_incl;
ret.max_excl = max_excl;
return ret;
}
static inline bool //
wuffs_base__range_ie_u64__is_empty(const wuffs_base__range_ie_u64* r) {
return r->min_incl >= r->max_excl;
}
static inline bool //
wuffs_base__range_ie_u64__equals(const wuffs_base__range_ie_u64* r,
wuffs_base__range_ie_u64 s) {
return (r->min_incl == s.min_incl && r->max_excl == s.max_excl) ||
(wuffs_base__range_ie_u64__is_empty(r) &&
wuffs_base__range_ie_u64__is_empty(&s));
}
static inline wuffs_base__range_ie_u64 //
wuffs_base__range_ie_u64__intersect(const wuffs_base__range_ie_u64* r,
wuffs_base__range_ie_u64 s) {
wuffs_base__range_ie_u64 t;
t.min_incl = wuffs_base__u64__max(r->min_incl, s.min_incl);
t.max_excl = wuffs_base__u64__min(r->max_excl, s.max_excl);
return t;
}
static inline wuffs_base__range_ie_u64 //
wuffs_base__range_ie_u64__unite(const wuffs_base__range_ie_u64* r,
wuffs_base__range_ie_u64 s) {
if (wuffs_base__range_ie_u64__is_empty(r)) {
return s;
}
if (wuffs_base__range_ie_u64__is_empty(&s)) {
return *r;
}
wuffs_base__range_ie_u64 t;
t.min_incl = wuffs_base__u64__min(r->min_incl, s.min_incl);
t.max_excl = wuffs_base__u64__max(r->max_excl, s.max_excl);
return t;
}
static inline bool //
wuffs_base__range_ie_u64__contains(const wuffs_base__range_ie_u64* r,
uint64_t x) {
return (r->min_incl <= x) && (x < r->max_excl);
}
static inline bool //
wuffs_base__range_ie_u64__contains_range(const wuffs_base__range_ie_u64* r,
wuffs_base__range_ie_u64 s) {
return wuffs_base__range_ie_u64__equals(
&s, wuffs_base__range_ie_u64__intersect(r, s));
}
static inline uint64_t //
wuffs_base__range_ie_u64__length(const wuffs_base__range_ie_u64* r) {
return wuffs_base__u64__sat_sub(r->max_excl, r->min_incl);
}
#ifdef __cplusplus
inline bool //
wuffs_base__range_ie_u64::is_empty() const {
return wuffs_base__range_ie_u64__is_empty(this);
}
inline bool //
wuffs_base__range_ie_u64::equals(wuffs_base__range_ie_u64 s) const {
return wuffs_base__range_ie_u64__equals(this, s);
}
inline wuffs_base__range_ie_u64 //
wuffs_base__range_ie_u64::intersect(wuffs_base__range_ie_u64 s) const {
return wuffs_base__range_ie_u64__intersect(this, s);
}
inline wuffs_base__range_ie_u64 //
wuffs_base__range_ie_u64::unite(wuffs_base__range_ie_u64 s) const {
return wuffs_base__range_ie_u64__unite(this, s);
}
inline bool //
wuffs_base__range_ie_u64::contains(uint64_t x) const {
return wuffs_base__range_ie_u64__contains(this, x);
}
inline bool //
wuffs_base__range_ie_u64::contains_range(wuffs_base__range_ie_u64 s) const {
return wuffs_base__range_ie_u64__contains_range(this, s);
}
inline uint64_t //
wuffs_base__range_ie_u64::length() const {
return wuffs_base__range_ie_u64__length(this);
}
#endif // __cplusplus
// --------
typedef struct wuffs_base__rect_ii_u32__struct {
uint32_t min_incl_x;
uint32_t min_incl_y;
uint32_t max_incl_x;
uint32_t max_incl_y;
#ifdef __cplusplus
inline bool is_empty() const;
inline bool equals(wuffs_base__rect_ii_u32__struct s) const;
inline wuffs_base__rect_ii_u32__struct intersect(
wuffs_base__rect_ii_u32__struct s) const;
inline wuffs_base__rect_ii_u32__struct unite(
wuffs_base__rect_ii_u32__struct s) const;
inline bool contains(uint32_t x, uint32_t y) const;
inline bool contains_rect(wuffs_base__rect_ii_u32__struct s) const;
#endif // __cplusplus
} wuffs_base__rect_ii_u32;
static inline wuffs_base__rect_ii_u32 //
wuffs_base__empty_rect_ii_u32() {
wuffs_base__rect_ii_u32 ret;
ret.min_incl_x = 0;
ret.min_incl_y = 0;
ret.max_incl_x = 0;
ret.max_incl_y = 0;
return ret;
}
static inline wuffs_base__rect_ii_u32 //
wuffs_base__make_rect_ii_u32(uint32_t min_incl_x,
uint32_t min_incl_y,
uint32_t max_incl_x,
uint32_t max_incl_y) {
wuffs_base__rect_ii_u32 ret;
ret.min_incl_x = min_incl_x;
ret.min_incl_y = min_incl_y;
ret.max_incl_x = max_incl_x;
ret.max_incl_y = max_incl_y;
return ret;
}
static inline bool //
wuffs_base__rect_ii_u32__is_empty(const wuffs_base__rect_ii_u32* r) {
return (r->min_incl_x > r->max_incl_x) || (r->min_incl_y > r->max_incl_y);
}
static inline bool //
wuffs_base__rect_ii_u32__equals(const wuffs_base__rect_ii_u32* r,
wuffs_base__rect_ii_u32 s) {
return (r->min_incl_x == s.min_incl_x && r->min_incl_y == s.min_incl_y &&
r->max_incl_x == s.max_incl_x && r->max_incl_y == s.max_incl_y) ||
(wuffs_base__rect_ii_u32__is_empty(r) &&
wuffs_base__rect_ii_u32__is_empty(&s));
}
static inline wuffs_base__rect_ii_u32 //
wuffs_base__rect_ii_u32__intersect(const wuffs_base__rect_ii_u32* r,
wuffs_base__rect_ii_u32 s) {
wuffs_base__rect_ii_u32 t;
t.min_incl_x = wuffs_base__u32__max(r->min_incl_x, s.min_incl_x);
t.min_incl_y = wuffs_base__u32__max(r->min_incl_y, s.min_incl_y);
t.max_incl_x = wuffs_base__u32__min(r->max_incl_x, s.max_incl_x);
t.max_incl_y = wuffs_base__u32__min(r->max_incl_y, s.max_incl_y);
return t;
}
static inline wuffs_base__rect_ii_u32 //
wuffs_base__rect_ii_u32__unite(const wuffs_base__rect_ii_u32* r,
wuffs_base__rect_ii_u32 s) {
if (wuffs_base__rect_ii_u32__is_empty(r)) {
return s;
}
if (wuffs_base__rect_ii_u32__is_empty(&s)) {
return *r;
}
wuffs_base__rect_ii_u32 t;
t.min_incl_x = wuffs_base__u32__min(r->min_incl_x, s.min_incl_x);
t.min_incl_y = wuffs_base__u32__min(r->min_incl_y, s.min_incl_y);
t.max_incl_x = wuffs_base__u32__max(r->max_incl_x, s.max_incl_x);
t.max_incl_y = wuffs_base__u32__max(r->max_incl_y, s.max_incl_y);
return t;
}
static inline bool //
wuffs_base__rect_ii_u32__contains(const wuffs_base__rect_ii_u32* r,
uint32_t x,
uint32_t y) {
return (r->min_incl_x <= x) && (x <= r->max_incl_x) && (r->min_incl_y <= y) &&
(y <= r->max_incl_y);
}
static inline bool //
wuffs_base__rect_ii_u32__contains_rect(const wuffs_base__rect_ii_u32* r,
wuffs_base__rect_ii_u32 s) {
return wuffs_base__rect_ii_u32__equals(
&s, wuffs_base__rect_ii_u32__intersect(r, s));
}
#ifdef __cplusplus
inline bool //
wuffs_base__rect_ii_u32::is_empty() const {
return wuffs_base__rect_ii_u32__is_empty(this);
}
inline bool //
wuffs_base__rect_ii_u32::equals(wuffs_base__rect_ii_u32 s) const {
return wuffs_base__rect_ii_u32__equals(this, s);
}
inline wuffs_base__rect_ii_u32 //
wuffs_base__rect_ii_u32::intersect(wuffs_base__rect_ii_u32 s) const {
return wuffs_base__rect_ii_u32__intersect(this, s);
}
inline wuffs_base__rect_ii_u32 //
wuffs_base__rect_ii_u32::unite(wuffs_base__rect_ii_u32 s) const {
return wuffs_base__rect_ii_u32__unite(this, s);
}
inline bool //
wuffs_base__rect_ii_u32::contains(uint32_t x, uint32_t y) const {
return wuffs_base__rect_ii_u32__contains(this, x, y);
}
inline bool //
wuffs_base__rect_ii_u32::contains_rect(wuffs_base__rect_ii_u32 s) const {
return wuffs_base__rect_ii_u32__contains_rect(this, s);
}
#endif // __cplusplus
// --------
typedef struct wuffs_base__rect_ie_u32__struct {
uint32_t min_incl_x;
uint32_t min_incl_y;
uint32_t max_excl_x;
uint32_t max_excl_y;
#ifdef __cplusplus
inline bool is_empty() const;
inline bool equals(wuffs_base__rect_ie_u32__struct s) const;
inline wuffs_base__rect_ie_u32__struct intersect(
wuffs_base__rect_ie_u32__struct s) const;
inline wuffs_base__rect_ie_u32__struct unite(
wuffs_base__rect_ie_u32__struct s) const;
inline bool contains(uint32_t x, uint32_t y) const;
inline bool contains_rect(wuffs_base__rect_ie_u32__struct s) const;
inline uint32_t width() const;
inline uint32_t height() const;
#endif // __cplusplus
} wuffs_base__rect_ie_u32;
static inline wuffs_base__rect_ie_u32 //
wuffs_base__empty_rect_ie_u32() {
wuffs_base__rect_ie_u32 ret;
ret.min_incl_x = 0;
ret.min_incl_y = 0;
ret.max_excl_x = 0;
ret.max_excl_y = 0;
return ret;
}
static inline wuffs_base__rect_ie_u32 //
wuffs_base__make_rect_ie_u32(uint32_t min_incl_x,
uint32_t min_incl_y,
uint32_t max_excl_x,
uint32_t max_excl_y) {
wuffs_base__rect_ie_u32 ret;
ret.min_incl_x = min_incl_x;
ret.min_incl_y = min_incl_y;
ret.max_excl_x = max_excl_x;
ret.max_excl_y = max_excl_y;
return ret;
}
static inline bool //
wuffs_base__rect_ie_u32__is_empty(const wuffs_base__rect_ie_u32* r) {
return (r->min_incl_x >= r->max_excl_x) || (r->min_incl_y >= r->max_excl_y);
}
static inline bool //
wuffs_base__rect_ie_u32__equals(const wuffs_base__rect_ie_u32* r,
wuffs_base__rect_ie_u32 s) {
return (r->min_incl_x == s.min_incl_x && r->min_incl_y == s.min_incl_y &&
r->max_excl_x == s.max_excl_x && r->max_excl_y == s.max_excl_y) ||
(wuffs_base__rect_ie_u32__is_empty(r) &&
wuffs_base__rect_ie_u32__is_empty(&s));
}
static inline wuffs_base__rect_ie_u32 //
wuffs_base__rect_ie_u32__intersect(const wuffs_base__rect_ie_u32* r,
wuffs_base__rect_ie_u32 s) {
wuffs_base__rect_ie_u32 t;
t.min_incl_x = wuffs_base__u32__max(r->min_incl_x, s.min_incl_x);
t.min_incl_y = wuffs_base__u32__max(r->min_incl_y, s.min_incl_y);
t.max_excl_x = wuffs_base__u32__min(r->max_excl_x, s.max_excl_x);
t.max_excl_y = wuffs_base__u32__min(r->max_excl_y, s.max_excl_y);
return t;
}
static inline wuffs_base__rect_ie_u32 //
wuffs_base__rect_ie_u32__unite(const wuffs_base__rect_ie_u32* r,
wuffs_base__rect_ie_u32 s) {
if (wuffs_base__rect_ie_u32__is_empty(r)) {
return s;
}
if (wuffs_base__rect_ie_u32__is_empty(&s)) {
return *r;
}
wuffs_base__rect_ie_u32 t;
t.min_incl_x = wuffs_base__u32__min(r->min_incl_x, s.min_incl_x);
t.min_incl_y = wuffs_base__u32__min(r->min_incl_y, s.min_incl_y);
t.max_excl_x = wuffs_base__u32__max(r->max_excl_x, s.max_excl_x);
t.max_excl_y = wuffs_base__u32__max(r->max_excl_y, s.max_excl_y);
return t;
}
static inline bool //
wuffs_base__rect_ie_u32__contains(const wuffs_base__rect_ie_u32* r,
uint32_t x,
uint32_t y) {
return (r->min_incl_x <= x) && (x < r->max_excl_x) && (r->min_incl_y <= y) &&
(y < r->max_excl_y);
}
static inline bool //
wuffs_base__rect_ie_u32__contains_rect(const wuffs_base__rect_ie_u32* r,
wuffs_base__rect_ie_u32 s) {
return wuffs_base__rect_ie_u32__equals(
&s, wuffs_base__rect_ie_u32__intersect(r, s));
}
static inline uint32_t //
wuffs_base__rect_ie_u32__width(const wuffs_base__rect_ie_u32* r) {
return wuffs_base__u32__sat_sub(r->max_excl_x, r->min_incl_x);
}
static inline uint32_t //
wuffs_base__rect_ie_u32__height(const wuffs_base__rect_ie_u32* r) {
return wuffs_base__u32__sat_sub(r->max_excl_y, r->min_incl_y);
}
#ifdef __cplusplus
inline bool //
wuffs_base__rect_ie_u32::is_empty() const {
return wuffs_base__rect_ie_u32__is_empty(this);
}
inline bool //
wuffs_base__rect_ie_u32::equals(wuffs_base__rect_ie_u32 s) const {
return wuffs_base__rect_ie_u32__equals(this, s);
}
inline wuffs_base__rect_ie_u32 //
wuffs_base__rect_ie_u32::intersect(wuffs_base__rect_ie_u32 s) const {
return wuffs_base__rect_ie_u32__intersect(this, s);
}
inline wuffs_base__rect_ie_u32 //
wuffs_base__rect_ie_u32::unite(wuffs_base__rect_ie_u32 s) const {
return wuffs_base__rect_ie_u32__unite(this, s);
}
inline bool //
wuffs_base__rect_ie_u32::contains(uint32_t x, uint32_t y) const {
return wuffs_base__rect_ie_u32__contains(this, x, y);
}
inline bool //
wuffs_base__rect_ie_u32::contains_rect(wuffs_base__rect_ie_u32 s) const {
return wuffs_base__rect_ie_u32__contains_rect(this, s);
}
inline uint32_t //
wuffs_base__rect_ie_u32::width() const {
return wuffs_base__rect_ie_u32__width(this);
}
inline uint32_t //
wuffs_base__rect_ie_u32::height() const {
return wuffs_base__rect_ie_u32__height(this);
}
#endif // __cplusplus
// ---------------- More Information
// wuffs_base__more_information holds additional fields, typically when a Wuffs
// method returns a [note status](/doc/note/statuses.md).
//
// The flavor field follows the base38 namespace
// convention](/doc/note/base38-and-fourcc.md). The other fields' semantics
// depends on the flavor.
typedef struct wuffs_base__more_information__struct {
uint32_t flavor;
uint32_t w;
uint64_t x;
uint64_t y;
uint64_t z;
#ifdef __cplusplus
inline void set(uint32_t flavor_arg,
uint32_t w_arg,
uint64_t x_arg,
uint64_t y_arg,
uint64_t z_arg);
inline uint32_t io_redirect__fourcc() const;
inline wuffs_base__range_ie_u64 io_redirect__range() const;
inline uint64_t io_seek__position() const;
inline uint32_t metadata__fourcc() const;
// Deprecated: use metadata_raw_passthrough__range.
inline wuffs_base__range_ie_u64 metadata__range() const;
inline wuffs_base__range_ie_u64 metadata_raw_passthrough__range() const;
inline int32_t metadata_parsed__chrm(uint32_t component) const;
inline uint32_t metadata_parsed__gama() const;
inline uint32_t metadata_parsed__srgb() const;
#endif // __cplusplus
} wuffs_base__more_information;
#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__IO_REDIRECT 1
#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__IO_SEEK 2
// Deprecated: use
// WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_PASSTHROUGH.
#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA 3
#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_PASSTHROUGH 3
#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_TRANSFORM 4
#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_PARSED 5
static inline wuffs_base__more_information //
wuffs_base__empty_more_information() {
wuffs_base__more_information ret;
ret.flavor = 0;
ret.w = 0;
ret.x = 0;
ret.y = 0;
ret.z = 0;
return ret;
}
static inline void //
wuffs_base__more_information__set(wuffs_base__more_information* m,
uint32_t flavor,
uint32_t w,
uint64_t x,
uint64_t y,
uint64_t z) {
if (!m) {
return;
}
m->flavor = flavor;
m->w = w;
m->x = x;
m->y = y;
m->z = z;
}
static inline uint32_t //
wuffs_base__more_information__io_redirect__fourcc(
const wuffs_base__more_information* m) {
return m->w;
}
static inline wuffs_base__range_ie_u64 //
wuffs_base__more_information__io_redirect__range(
const wuffs_base__more_information* m) {
wuffs_base__range_ie_u64 ret;
ret.min_incl = m->y;
ret.max_excl = m->z;
return ret;
}
static inline uint64_t //
wuffs_base__more_information__io_seek__position(
const wuffs_base__more_information* m) {
return m->x;
}
static inline uint32_t //
wuffs_base__more_information__metadata__fourcc(
const wuffs_base__more_information* m) {
return m->w;
}
// Deprecated: use
// wuffs_base__more_information__metadata_raw_passthrough__range.
static inline wuffs_base__range_ie_u64 //
wuffs_base__more_information__metadata__range(
const wuffs_base__more_information* m) {
wuffs_base__range_ie_u64 ret;
ret.min_incl = m->y;
ret.max_excl = m->z;
return ret;
}
static inline wuffs_base__range_ie_u64 //
wuffs_base__more_information__metadata_raw_passthrough__range(
const wuffs_base__more_information* m) {
wuffs_base__range_ie_u64 ret;
ret.min_incl = m->y;
ret.max_excl = m->z;
return ret;
}
#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__WHITE_X 0
#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__WHITE_Y 1
#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__RED_X 2
#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__RED_Y 3
#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__GREEN_X 4
#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__GREEN_Y 5
#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__BLUE_X 6
#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__BLUE_Y 7
// wuffs_base__more_information__metadata_parsed__chrm returns chromaticity
// values (scaled by 100000) like the PNG "cHRM" chunk. For example, the sRGB
// color space corresponds to:
// - ETC__CHRM__WHITE_X 31270
// - ETC__CHRM__WHITE_Y 32900
// - ETC__CHRM__RED_X 64000
// - ETC__CHRM__RED_Y 33000
// - ETC__CHRM__GREEN_X 30000
// - ETC__CHRM__GREEN_Y 60000
// - ETC__CHRM__BLUE_X 15000
// - ETC__CHRM__BLUE_Y 6000
//
// See
// https://ciechanow.ski/color-spaces/#chromaticity-and-white-point-coordinates
static inline int32_t //
wuffs_base__more_information__metadata_parsed__chrm(
const wuffs_base__more_information* m,
uint32_t component) {
// After the flavor and the w field (holding a FourCC), a
// wuffs_base__more_information holds 24 bytes of data in three uint64_t
// typed fields (x, y and z). We pack the eight chromaticity values (wx, wy,
// rx, ..., by), basically int24_t values, into 24 bytes like this:
// - LSB MSB
// - x: wx wx wx wy wy wy rx rx
// - y: rx ry ry ry gx gx gx gy
// - z: gy gy bx bx bx by by by
uint32_t u = 0;
switch (component & 7) {
case 0:
u = ((uint32_t)(m->x >> 0));
break;
case 1:
u = ((uint32_t)(m->x >> 24));
break;
case 2:
u = ((uint32_t)((m->x >> 48) | (m->y << 16)));
break;
case 3:
u = ((uint32_t)(m->y >> 8));
break;
case 4:
u = ((uint32_t)(m->y >> 32));
break;
case 5:
u = ((uint32_t)((m->y >> 56) | (m->z << 8)));
break;
case 6:
u = ((uint32_t)(m->z >> 16));
break;
case 7:
u = ((uint32_t)(m->z >> 40));
break;
}
// The left-right shifts sign-extend from 24-bit to 32-bit integers.
return ((int32_t)(u << 8)) >> 8;
}
// wuffs_base__more_information__metadata_parsed__gama returns inverse gamma
// correction values (scaled by 100000) like the PNG "gAMA" chunk. For example,
// for gamma = 2.2, this returns 45455 (approximating 100000 / 2.2).
static inline uint32_t //
wuffs_base__more_information__metadata_parsed__gama(
const wuffs_base__more_information* m) {
return ((uint32_t)(m->x));
}
#define WUFFS_BASE__SRGB_RENDERING_INTENT__PERCEPTUAL 0
#define WUFFS_BASE__SRGB_RENDERING_INTENT__RELATIVE_COLORIMETRIC 1
#define WUFFS_BASE__SRGB_RENDERING_INTENT__SATURATION 2
#define WUFFS_BASE__SRGB_RENDERING_INTENT__ABSOLUTE_COLORIMETRIC 3
// wuffs_base__more_information__metadata_parsed__srgb returns the sRGB
// rendering intent like the PNG "sRGB" chunk.
static inline uint32_t //
wuffs_base__more_information__metadata_parsed__srgb(
const wuffs_base__more_information* m) {
return m->x & 3;
}
#ifdef __cplusplus
inline void //
wuffs_base__more_information::set(uint32_t flavor_arg,
uint32_t w_arg,
uint64_t x_arg,
uint64_t y_arg,
uint64_t z_arg) {
wuffs_base__more_information__set(this, flavor_arg, w_arg, x_arg, y_arg,
z_arg);
}
inline uint32_t //
wuffs_base__more_information::io_redirect__fourcc() const {
return wuffs_base__more_information__io_redirect__fourcc(this);
}
inline wuffs_base__range_ie_u64 //
wuffs_base__more_information::io_redirect__range() const {
return wuffs_base__more_information__io_redirect__range(this);
}
inline uint64_t //
wuffs_base__more_information::io_seek__position() const {
return wuffs_base__more_information__io_seek__position(this);
}
inline uint32_t //
wuffs_base__more_information::metadata__fourcc() const {
return wuffs_base__more_information__metadata__fourcc(this);
}
inline wuffs_base__range_ie_u64 //
wuffs_base__more_information::metadata__range() const {
return wuffs_base__more_information__metadata__range(this);
}
inline wuffs_base__range_ie_u64 //
wuffs_base__more_information::metadata_raw_passthrough__range() const {
return wuffs_base__more_information__metadata_raw_passthrough__range(this);
}
inline int32_t //
wuffs_base__more_information::metadata_parsed__chrm(uint32_t component) const {
return wuffs_base__more_information__metadata_parsed__chrm(this, component);
}
inline uint32_t //
wuffs_base__more_information::metadata_parsed__gama() const {
return wuffs_base__more_information__metadata_parsed__gama(this);
}
inline uint32_t //
wuffs_base__more_information::metadata_parsed__srgb() const {
return wuffs_base__more_information__metadata_parsed__srgb(this);
}
#endif // __cplusplus
// ---------------- I/O
//
// See (/doc/note/io-input-output.md).
// wuffs_base__io_buffer_meta is the metadata for a wuffs_base__io_buffer's
// data.
typedef struct wuffs_base__io_buffer_meta__struct {
size_t wi; // Write index. Invariant: wi <= len.
size_t ri; // Read index. Invariant: ri <= wi.
uint64_t pos; // Buffer position (relative to the start of stream).
bool closed; // No further writes are expected.
} wuffs_base__io_buffer_meta;
// wuffs_base__io_buffer is a 1-dimensional buffer (a pointer and length) plus
// additional metadata.
//
// A value with all fields zero is a valid, empty buffer.
typedef struct wuffs_base__io_buffer__struct {
wuffs_base__slice_u8 data;
wuffs_base__io_buffer_meta meta;
#ifdef __cplusplus
inline bool is_valid() const;
inline void compact();
inline size_t reader_length() const;
inline uint8_t* reader_pointer() const;
inline uint64_t reader_position() const;
inline wuffs_base__slice_u8 reader_slice() const;
inline size_t writer_length() const;
inline uint8_t* writer_pointer() const;
inline uint64_t writer_position() const;
inline wuffs_base__slice_u8 writer_slice() const;
// Deprecated: use reader_position.
inline uint64_t reader_io_position() const;
// Deprecated: use writer_position.
inline uint64_t writer_io_position() const;
#endif // __cplusplus
} wuffs_base__io_buffer;
static inline wuffs_base__io_buffer //
wuffs_base__make_io_buffer(wuffs_base__slice_u8 data,
wuffs_base__io_buffer_meta meta) {
wuffs_base__io_buffer ret;
ret.data = data;
ret.meta = meta;
return ret;
}
static inline wuffs_base__io_buffer_meta //
wuffs_base__make_io_buffer_meta(size_t wi,
size_t ri,
uint64_t pos,
bool closed) {
wuffs_base__io_buffer_meta ret;
ret.wi = wi;
ret.ri = ri;
ret.pos = pos;
ret.closed = closed;
return ret;
}
static inline wuffs_base__io_buffer //
wuffs_base__ptr_u8__reader(uint8_t* ptr, size_t len, bool closed) {
wuffs_base__io_buffer ret;
ret.data.ptr = ptr;
ret.data.len = len;
ret.meta.wi = len;
ret.meta.ri = 0;
ret.meta.pos = 0;
ret.meta.closed = closed;
return ret;
}
static inline wuffs_base__io_buffer //
wuffs_base__ptr_u8__writer(uint8_t* ptr, size_t len) {
wuffs_base__io_buffer ret;
ret.data.ptr = ptr;
ret.data.len = len;
ret.meta.wi = 0;
ret.meta.ri = 0;
ret.meta.pos = 0;
ret.meta.closed = false;
return ret;
}
static inline wuffs_base__io_buffer //
wuffs_base__slice_u8__reader(wuffs_base__slice_u8 s, bool closed) {
wuffs_base__io_buffer ret;
ret.data.ptr = s.ptr;
ret.data.len = s.len;
ret.meta.wi = s.len;
ret.meta.ri = 0;
ret.meta.pos = 0;
ret.meta.closed = closed;
return ret;
}
static inline wuffs_base__io_buffer //
wuffs_base__slice_u8__writer(wuffs_base__slice_u8 s) {
wuffs_base__io_buffer ret;
ret.data.ptr = s.ptr;
ret.data.len = s.len;
ret.meta.wi = 0;
ret.meta.ri = 0;
ret.meta.pos = 0;
ret.meta.closed = false;
return ret;
}
static inline wuffs_base__io_buffer //
wuffs_base__empty_io_buffer() {
wuffs_base__io_buffer ret;
ret.data.ptr = NULL;
ret.data.len = 0;
ret.meta.wi = 0;
ret.meta.ri = 0;
ret.meta.pos = 0;
ret.meta.closed = false;
return ret;
}
static inline wuffs_base__io_buffer_meta //
wuffs_base__empty_io_buffer_meta() {
wuffs_base__io_buffer_meta ret;
ret.wi = 0;
ret.ri = 0;
ret.pos = 0;
ret.closed = false;
return ret;
}
static inline bool //
wuffs_base__io_buffer__is_valid(const wuffs_base__io_buffer* buf) {
if (buf) {
if (buf->data.ptr) {
return (buf->meta.ri <= buf->meta.wi) && (buf->meta.wi <= buf->data.len);
} else {
return (buf->meta.ri == 0) && (buf->meta.wi == 0) && (buf->data.len == 0);
}
}
return false;
}
// wuffs_base__io_buffer__compact moves any written but unread bytes to the
// start of the buffer.
static inline void //
wuffs_base__io_buffer__compact(wuffs_base__io_buffer* buf) {
if (!buf || (buf->meta.ri == 0)) {
return;
}
buf->meta.pos = wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri);
size_t n = buf->meta.wi - buf->meta.ri;
if (n != 0) {
memmove(buf->data.ptr, buf->data.ptr + buf->meta.ri, n);
}
buf->meta.wi = n;
buf->meta.ri = 0;
}
// Deprecated. Use wuffs_base__io_buffer__reader_position.
static inline uint64_t //
wuffs_base__io_buffer__reader_io_position(const wuffs_base__io_buffer* buf) {
return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri) : 0;
}
static inline size_t //
wuffs_base__io_buffer__reader_length(const wuffs_base__io_buffer* buf) {
return buf ? buf->meta.wi - buf->meta.ri : 0;
}
static inline uint8_t* //
wuffs_base__io_buffer__reader_pointer(const wuffs_base__io_buffer* buf) {
return buf ? (buf->data.ptr + buf->meta.ri) : NULL;
}
static inline uint64_t //
wuffs_base__io_buffer__reader_position(const wuffs_base__io_buffer* buf) {
return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri) : 0;
}
static inline wuffs_base__slice_u8 //
wuffs_base__io_buffer__reader_slice(const wuffs_base__io_buffer* buf) {
return buf ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.ri,
buf->meta.wi - buf->meta.ri)
: wuffs_base__empty_slice_u8();
}
// Deprecated. Use wuffs_base__io_buffer__writer_position.
static inline uint64_t //
wuffs_base__io_buffer__writer_io_position(const wuffs_base__io_buffer* buf) {
return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.wi) : 0;
}
static inline size_t //
wuffs_base__io_buffer__writer_length(const wuffs_base__io_buffer* buf) {
return buf ? buf->data.len - buf->meta.wi : 0;
}
static inline uint8_t* //
wuffs_base__io_buffer__writer_pointer(const wuffs_base__io_buffer* buf) {
return buf ? (buf->data.ptr + buf->meta.wi) : NULL;
}
static inline uint64_t //
wuffs_base__io_buffer__writer_position(const wuffs_base__io_buffer* buf) {
return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.wi) : 0;
}
static inline wuffs_base__slice_u8 //
wuffs_base__io_buffer__writer_slice(const wuffs_base__io_buffer* buf) {
return buf ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.wi,
buf->data.len - buf->meta.wi)
: wuffs_base__empty_slice_u8();
}
#ifdef __cplusplus
inline bool //
wuffs_base__io_buffer::is_valid() const {
return wuffs_base__io_buffer__is_valid(this);
}
inline void //
wuffs_base__io_buffer::compact() {
wuffs_base__io_buffer__compact(this);
}
inline uint64_t //
wuffs_base__io_buffer::reader_io_position() const {
return wuffs_base__io_buffer__reader_io_position(this);
}
inline size_t //
wuffs_base__io_buffer::reader_length() const {
return wuffs_base__io_buffer__reader_length(this);
}
inline uint8_t* //
wuffs_base__io_buffer::reader_pointer() const {
return wuffs_base__io_buffer__reader_pointer(this);
}
inline uint64_t //
wuffs_base__io_buffer::reader_position() const {
return wuffs_base__io_buffer__reader_position(this);
}
inline wuffs_base__slice_u8 //
wuffs_base__io_buffer::reader_slice() const {
return wuffs_base__io_buffer__reader_slice(this);
}
inline uint64_t //
wuffs_base__io_buffer::writer_io_position() const {
return wuffs_base__io_buffer__writer_io_position(this);
}
inline size_t //
wuffs_base__io_buffer::writer_length() const {
return wuffs_base__io_buffer__writer_length(this);
}
inline uint8_t* //
wuffs_base__io_buffer::writer_pointer() const {
return wuffs_base__io_buffer__writer_pointer(this);
}
inline uint64_t //
wuffs_base__io_buffer::writer_position() const {
return wuffs_base__io_buffer__writer_position(this);
}
inline wuffs_base__slice_u8 //
wuffs_base__io_buffer::writer_slice() const {
return wuffs_base__io_buffer__writer_slice(this);
}
#endif // __cplusplus
// ---------------- Tokens
// wuffs_base__token is an element of a byte stream's tokenization.
//
// See https://github.com/google/wuffs/blob/main/doc/note/tokens.md
typedef struct wuffs_base__token__struct {
uint64_t repr;
#ifdef __cplusplus
inline int64_t value() const;
inline int64_t value_extension() const;
inline int64_t value_major() const;
inline int64_t value_base_category() const;
inline uint64_t value_minor() const;
inline uint64_t value_base_detail() const;
inline int64_t value_base_detail__sign_extended() const;
inline bool continued() const;
inline uint64_t length() const;
#endif // __cplusplus
} wuffs_base__token;
static inline wuffs_base__token //
wuffs_base__make_token(uint64_t repr) {
wuffs_base__token ret;
ret.repr = repr;
return ret;
}
// --------
#define WUFFS_BASE__TOKEN__LENGTH__MAX_INCL 0xFFFF
#define WUFFS_BASE__TOKEN__VALUE__SHIFT 17
#define WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT 17
#define WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT 42
#define WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT 17
#define WUFFS_BASE__TOKEN__VALUE_BASE_CATEGORY__SHIFT 38
#define WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT 17
#define WUFFS_BASE__TOKEN__CONTINUED__SHIFT 16
#define WUFFS_BASE__TOKEN__LENGTH__SHIFT 0
#define WUFFS_BASE__TOKEN__VALUE_EXTENSION__NUM_BITS 46
// --------
#define WUFFS_BASE__TOKEN__VBC__FILLER 0
#define WUFFS_BASE__TOKEN__VBC__STRUCTURE 1
#define WUFFS_BASE__TOKEN__VBC__STRING 2
#define WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT 3
#define WUFFS_BASE__TOKEN__VBC__LITERAL 4
#define WUFFS_BASE__TOKEN__VBC__NUMBER 5
#define WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED 6
#define WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_UNSIGNED 7
// --------
#define WUFFS_BASE__TOKEN__VBD__FILLER__PUNCTUATION 0x00001
#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_BLOCK 0x00002
#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_LINE 0x00004
// COMMENT_ANY is a bit-wise or of COMMENT_BLOCK AND COMMENT_LINE.
#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_ANY 0x00006
// --------
#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH 0x00001
#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__POP 0x00002
#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE 0x00010
#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST 0x00020
#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT 0x00040
#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE 0x01000
#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST 0x02000
#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT 0x04000
// --------
// DEFINITELY_FOO means that the destination bytes (and also the source bytes,
// for 1_DST_1_SRC_COPY) are in the FOO format. Definitely means that the lack
// of the bit means "maybe FOO". It does not necessarily mean "not FOO".
//
// CHAIN_ETC means that decoding the entire token chain forms a UTF-8 or ASCII
// string, not just this current token. CHAIN_ETC_UTF_8 therefore distinguishes
// Unicode (UTF-8) strings from byte strings. MUST means that the the token
// producer (e.g. parser) must verify this. SHOULD means that the token
// consumer (e.g. renderer) should verify this.
//
// When a CHAIN_ETC_UTF_8 bit is set, the parser must ensure that non-ASCII
// code points (with multi-byte UTF-8 encodings) do not straddle token
// boundaries. Checking UTF-8 validity can inspect each token separately.
//
// The lack of any particular bit is conservative: it is valid for all-ASCII
// strings, in a single- or multi-token chain, to have none of these bits set.
#define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_UTF_8 0x00001
#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_UTF_8 0x00002
#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_SHOULD_BE_UTF_8 0x00004
#define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_ASCII 0x00010
#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_ASCII 0x00020
#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_SHOULD_BE_ASCII 0x00040
// CONVERT_D_DST_S_SRC means that multiples of S source bytes (possibly padded)
// produces multiples of D destination bytes. For example,
// CONVERT_1_DST_4_SRC_BACKSLASH_X means a source like "\\x23\\x67\\xAB", where
// 12 src bytes encode 3 dst bytes.
//
// Post-processing may further transform those D destination bytes (e.g. treat
// "\\xFF" as the Unicode code point U+00FF instead of the byte 0xFF), but that
// is out of scope of this VBD's semantics.
//
// When src is the empty string, multiple conversion algorithms are applicable
// (so these bits are not necessarily mutually exclusive), all producing the
// same empty dst string.
#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP 0x00100
#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY 0x00200
#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_2_SRC_HEXADECIMAL 0x00400
#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_4_SRC_BACKSLASH_X 0x00800
#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_3_DST_4_SRC_BASE_64_STD 0x01000
#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_3_DST_4_SRC_BASE_64_URL 0x02000
#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_4_DST_5_SRC_ASCII_85 0x04000
#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_5_DST_8_SRC_BASE_32_HEX 0x08000
#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_5_DST_8_SRC_BASE_32_STD 0x10000
// --------
#define WUFFS_BASE__TOKEN__VBD__LITERAL__UNDEFINED 0x00001
#define WUFFS_BASE__TOKEN__VBD__LITERAL__NULL 0x00002
#define WUFFS_BASE__TOKEN__VBD__LITERAL__FALSE 0x00004
#define WUFFS_BASE__TOKEN__VBD__LITERAL__TRUE 0x00008
// --------
// For a source string of "123" or "0x9A", it is valid for a tokenizer to
// return any combination of:
// - WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT.
// - WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_SIGNED.
// - WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_UNSIGNED.
//
// For a source string of "+123" or "-0x9A", only the first two are valid.
//
// For a source string of "123.", only the first one is valid.
#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT 0x00001
#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_SIGNED 0x00002
#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_UNSIGNED 0x00004
#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_INF 0x00010
#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_POS_INF 0x00020
#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_NAN 0x00040
#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_POS_NAN 0x00080
// The number 300 might be represented as "\x01\x2C", "\x2C\x01\x00\x00" or
// "300", which are big-endian, little-endian or text. For binary formats, the
// token length (after adjusting for FORMAT_IGNORE_ETC) discriminates
// e.g. u16 little-endian vs u32 little-endian.
#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_BIG_ENDIAN 0x00100
#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_LITTLE_ENDIAN 0x00200
#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_TEXT 0x00400
#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_IGNORE_FIRST_BYTE 0x01000
// --------
// wuffs_base__token__value returns the token's high 46 bits, sign-extended. A
// negative value means an extended token, non-negative means a simple token.
static inline int64_t //
wuffs_base__token__value(const wuffs_base__token* t) {
return ((int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE__SHIFT;
}
// wuffs_base__token__value_extension returns a negative value if the token was
// not an extended token.
static inline int64_t //
wuffs_base__token__value_extension(const wuffs_base__token* t) {
return (~(int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT;
}
// wuffs_base__token__value_major returns a negative value if the token was not
// a simple token.
static inline int64_t //
wuffs_base__token__value_major(const wuffs_base__token* t) {
return ((int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT;
}
// wuffs_base__token__value_base_category returns a negative value if the token
// was not a simple token.
static inline int64_t //
wuffs_base__token__value_base_category(const wuffs_base__token* t) {
return ((int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE_BASE_CATEGORY__SHIFT;
}
static inline uint64_t //
wuffs_base__token__value_minor(const wuffs_base__token* t) {
return (t->repr >> WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) & 0x1FFFFFF;
}
static inline uint64_t //
wuffs_base__token__value_base_detail(const wuffs_base__token* t) {
return (t->repr >> WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT) & 0x1FFFFF;
}
static inline int64_t //
wuffs_base__token__value_base_detail__sign_extended(
const wuffs_base__token* t) {
// The VBD is 21 bits in the middle of t->repr. Left shift the high (64 - 21
// - ETC__SHIFT) bits off, then right shift (sign-extending) back down.
uint64_t u = t->repr << (43 - WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT);
return ((int64_t)u) >> 43;
}
static inline bool //
wuffs_base__token__continued(const wuffs_base__token* t) {
return t->repr & 0x10000;
}
static inline uint64_t //
wuffs_base__token__length(const wuffs_base__token* t) {
return (t->repr >> WUFFS_BASE__TOKEN__LENGTH__SHIFT) & 0xFFFF;
}
#ifdef __cplusplus
inline int64_t //
wuffs_base__token::value() const {
return wuffs_base__token__value(this);
}
inline int64_t //
wuffs_base__token::value_extension() const {
return wuffs_base__token__value_extension(this);
}
inline int64_t //
wuffs_base__token::value_major() const {
return wuffs_base__token__value_major(this);
}
inline int64_t //
wuffs_base__token::value_base_category() const {
return wuffs_base__token__value_base_category(this);
}
inline uint64_t //
wuffs_base__token::value_minor() const {
return wuffs_base__token__value_minor(this);
}
inline uint64_t //
wuffs_base__token::value_base_detail() const {
return wuffs_base__token__value_base_detail(this);
}
inline int64_t //
wuffs_base__token::value_base_detail__sign_extended() const {
return wuffs_base__token__value_base_detail__sign_extended(this);
}
inline bool //
wuffs_base__token::continued() const {
return wuffs_base__token__continued(this);
}
inline uint64_t //
wuffs_base__token::length() const {
return wuffs_base__token__length(this);
}
#endif // __cplusplus
// --------
typedef WUFFS_BASE__SLICE(wuffs_base__token) wuffs_base__slice_token;
static inline wuffs_base__slice_token //
wuffs_base__make_slice_token(wuffs_base__token* ptr, size_t len) {
wuffs_base__slice_token ret;
ret.ptr = ptr;
ret.len = len;
return ret;
}
static inline wuffs_base__slice_token //
wuffs_base__empty_slice_token() {
wuffs_base__slice_token ret;
ret.ptr = NULL;
ret.len = 0;
return ret;
}
// --------
// wuffs_base__token_buffer_meta is the metadata for a
// wuffs_base__token_buffer's data.
typedef struct wuffs_base__token_buffer_meta__struct {
size_t wi; // Write index. Invariant: wi <= len.
size_t ri; // Read index. Invariant: ri <= wi.
uint64_t pos; // Position of the buffer start relative to the stream start.
bool closed; // No further writes are expected.
} wuffs_base__token_buffer_meta;
// wuffs_base__token_buffer is a 1-dimensional buffer (a pointer and length)
// plus additional metadata.
//
// A value with all fields zero is a valid, empty buffer.
typedef struct wuffs_base__token_buffer__struct {
wuffs_base__slice_token data;
wuffs_base__token_buffer_meta meta;
#ifdef __cplusplus
inline bool is_valid() const;
inline void compact();
inline uint64_t reader_length() const;
inline wuffs_base__token* reader_pointer() const;
inline wuffs_base__slice_token reader_slice() const;
inline uint64_t reader_token_position() const;
inline uint64_t writer_length() const;
inline uint64_t writer_token_position() const;
inline wuffs_base__token* writer_pointer() const;
inline wuffs_base__slice_token writer_slice() const;
#endif // __cplusplus
} wuffs_base__token_buffer;
static inline wuffs_base__token_buffer //
wuffs_base__make_token_buffer(wuffs_base__slice_token data,
wuffs_base__token_buffer_meta meta) {
wuffs_base__token_buffer ret;
ret.data = data;
ret.meta = meta;
return ret;
}
static inline wuffs_base__token_buffer_meta //
wuffs_base__make_token_buffer_meta(size_t wi,
size_t ri,
uint64_t pos,
bool closed) {
wuffs_base__token_buffer_meta ret;
ret.wi = wi;
ret.ri = ri;
ret.pos = pos;
ret.closed = closed;
return ret;
}
static inline wuffs_base__token_buffer //
wuffs_base__slice_token__reader(wuffs_base__slice_token s, bool closed) {
wuffs_base__token_buffer ret;
ret.data.ptr = s.ptr;
ret.data.len = s.len;
ret.meta.wi = s.len;
ret.meta.ri = 0;
ret.meta.pos = 0;
ret.meta.closed = closed;
return ret;
}
static inline wuffs_base__token_buffer //
wuffs_base__slice_token__writer(wuffs_base__slice_token s) {
wuffs_base__token_buffer ret;
ret.data.ptr = s.ptr;
ret.data.len = s.len;
ret.meta.wi = 0;
ret.meta.ri = 0;
ret.meta.pos = 0;
ret.meta.closed = false;
return ret;
}
static inline wuffs_base__token_buffer //
wuffs_base__empty_token_buffer() {
wuffs_base__token_buffer ret;
ret.data.ptr = NULL;
ret.data.len = 0;
ret.meta.wi = 0;
ret.meta.ri = 0;
ret.meta.pos = 0;
ret.meta.closed = false;
return ret;
}
static inline wuffs_base__token_buffer_meta //
wuffs_base__empty_token_buffer_meta() {
wuffs_base__token_buffer_meta ret;
ret.wi = 0;
ret.ri = 0;
ret.pos = 0;
ret.closed = false;
return ret;
}
static inline bool //
wuffs_base__token_buffer__is_valid(const wuffs_base__token_buffer* buf) {
if (buf) {
if (buf->data.ptr) {
return (buf->meta.ri <= buf->meta.wi) && (buf->meta.wi <= buf->data.len);
} else {
return (buf->meta.ri == 0) && (buf->meta.wi == 0) && (buf->data.len == 0);
}
}
return false;
}
// wuffs_base__token_buffer__compact moves any written but unread tokens to the
// start of the buffer.
static inline void //
wuffs_base__token_buffer__compact(wuffs_base__token_buffer* buf) {
if (!buf || (buf->meta.ri == 0)) {
return;
}
buf->meta.pos = wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri);
size_t n = buf->meta.wi - buf->meta.ri;
if (n != 0) {
memmove(buf->data.ptr, buf->data.ptr + buf->meta.ri,
n * sizeof(wuffs_base__token));
}
buf->meta.wi = n;
buf->meta.ri = 0;
}
static inline uint64_t //
wuffs_base__token_buffer__reader_length(const wuffs_base__token_buffer* buf) {
return buf ? buf->meta.wi - buf->meta.ri : 0;
}
static inline wuffs_base__token* //
wuffs_base__token_buffer__reader_pointer(const wuffs_base__token_buffer* buf) {
return buf ? (buf->data.ptr + buf->meta.ri) : NULL;
}
static inline wuffs_base__slice_token //
wuffs_base__token_buffer__reader_slice(const wuffs_base__token_buffer* buf) {
return buf ? wuffs_base__make_slice_token(buf->data.ptr + buf->meta.ri,
buf->meta.wi - buf->meta.ri)
: wuffs_base__empty_slice_token();
}
static inline uint64_t //
wuffs_base__token_buffer__reader_token_position(
const wuffs_base__token_buffer* buf) {
return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri) : 0;
}
static inline uint64_t //
wuffs_base__token_buffer__writer_length(const wuffs_base__token_buffer* buf) {
return buf ? buf->data.len - buf->meta.wi : 0;
}
static inline wuffs_base__token* //
wuffs_base__token_buffer__writer_pointer(const wuffs_base__token_buffer* buf) {
return buf ? (buf->data.ptr + buf->meta.wi) : NULL;
}
static inline wuffs_base__slice_token //
wuffs_base__token_buffer__writer_slice(const wuffs_base__token_buffer* buf) {
return buf ? wuffs_base__make_slice_token(buf->data.ptr + buf->meta.wi,
buf->data.len - buf->meta.wi)
: wuffs_base__empty_slice_token();
}
static inline uint64_t //
wuffs_base__token_buffer__writer_token_position(
const wuffs_base__token_buffer* buf) {
return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.wi) : 0;
}
#ifdef __cplusplus
inline bool //
wuffs_base__token_buffer::is_valid() const {
return wuffs_base__token_buffer__is_valid(this);
}
inline void //
wuffs_base__token_buffer::compact() {
wuffs_base__token_buffer__compact(this);
}
inline uint64_t //
wuffs_base__token_buffer::reader_length() const {
return wuffs_base__token_buffer__reader_length(this);
}
inline wuffs_base__token* //
wuffs_base__token_buffer::reader_pointer() const {
return wuffs_base__token_buffer__reader_pointer(this);
}
inline wuffs_base__slice_token //
wuffs_base__token_buffer::reader_slice() const {
return wuffs_base__token_buffer__reader_slice(this);
}
inline uint64_t //
wuffs_base__token_buffer::reader_token_position() const {
return wuffs_base__token_buffer__reader_token_position(this);
}
inline uint64_t //
wuffs_base__token_buffer::writer_length() const {
return wuffs_base__token_buffer__writer_length(this);
}
inline wuffs_base__token* //
wuffs_base__token_buffer::writer_pointer() const {
return wuffs_base__token_buffer__writer_pointer(this);
}
inline wuffs_base__slice_token //
wuffs_base__token_buffer::writer_slice() const {
return wuffs_base__token_buffer__writer_slice(this);
}
inline uint64_t //
wuffs_base__token_buffer::writer_token_position() const {
return wuffs_base__token_buffer__writer_token_position(this);
}
#endif // __cplusplus
// ---------------- Memory Allocation
// The memory allocation related functions in this section aren't used by Wuffs
// per se, but they may be helpful to the code that uses Wuffs.
// wuffs_base__malloc_slice_uxx wraps calling a malloc-like function, except
// that it takes a uint64_t number of elements instead of a size_t size in
// bytes, and it returns a slice (a pointer and a length) instead of just a
// pointer.
//
// You can pass the C stdlib's malloc as the malloc_func.
//
// It returns an empty slice (containing a NULL ptr field) if (num_uxx *
// sizeof(uintxx_t)) would overflow SIZE_MAX.
static inline wuffs_base__slice_u8 //
wuffs_base__malloc_slice_u8(void* (*malloc_func)(size_t), uint64_t num_u8) {
if (malloc_func && (num_u8 <= (SIZE_MAX / sizeof(uint8_t)))) {
void* p = (*malloc_func)((size_t)(num_u8 * sizeof(uint8_t)));
if (p) {
return wuffs_base__make_slice_u8((uint8_t*)(p), (size_t)num_u8);
}
}
return wuffs_base__make_slice_u8(NULL, 0);
}
static inline wuffs_base__slice_u16 //
wuffs_base__malloc_slice_u16(void* (*malloc_func)(size_t), uint64_t num_u16) {
if (malloc_func && (num_u16 <= (SIZE_MAX / sizeof(uint16_t)))) {
void* p = (*malloc_func)((size_t)(num_u16 * sizeof(uint16_t)));
if (p) {
return wuffs_base__make_slice_u16((uint16_t*)(p), (size_t)num_u16);
}
}
return wuffs_base__make_slice_u16(NULL, 0);
}
static inline wuffs_base__slice_u32 //
wuffs_base__malloc_slice_u32(void* (*malloc_func)(size_t), uint64_t num_u32) {
if (malloc_func && (num_u32 <= (SIZE_MAX / sizeof(uint32_t)))) {
void* p = (*malloc_func)((size_t)(num_u32 * sizeof(uint32_t)));
if (p) {
return wuffs_base__make_slice_u32((uint32_t*)(p), (size_t)num_u32);
}
}
return wuffs_base__make_slice_u32(NULL, 0);
}
static inline wuffs_base__slice_u64 //
wuffs_base__malloc_slice_u64(void* (*malloc_func)(size_t), uint64_t num_u64) {
if (malloc_func && (num_u64 <= (SIZE_MAX / sizeof(uint64_t)))) {
void* p = (*malloc_func)((size_t)(num_u64 * sizeof(uint64_t)));
if (p) {
return wuffs_base__make_slice_u64((uint64_t*)(p), (size_t)num_u64);
}
}
return wuffs_base__make_slice_u64(NULL, 0);
}
// ---------------- Images
// wuffs_base__color_u32_argb_premul is an 8 bit per channel premultiplied
// Alpha, Red, Green, Blue color, as a uint32_t value. Its value is always
// 0xAARRGGBB (Alpha most significant, Blue least), regardless of endianness.
typedef uint32_t wuffs_base__color_u32_argb_premul;
// wuffs_base__color_u32_argb_premul__is_valid returns whether c's Red, Green
// and Blue channels are all less than or equal to its Alpha channel. c uses
// premultiplied alpha, so 50% opaque 100% saturated red is 0x7F7F_0000 and a
// value like 0x7F80_0000 is invalid.
static inline bool //
wuffs_base__color_u32_argb_premul__is_valid(
wuffs_base__color_u32_argb_premul c) {
uint32_t a = 0xFF & (c >> 24);
uint32_t r = 0xFF & (c >> 16);
uint32_t g = 0xFF & (c >> 8);
uint32_t b = 0xFF & (c >> 0);
return (a >= r) && (a >= g) && (a >= b);
}
static inline uint16_t //
wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
wuffs_base__color_u32_argb_premul c) {
uint32_t r5 = 0xF800 & (c >> 8);
uint32_t g6 = 0x07E0 & (c >> 5);
uint32_t b5 = 0x001F & (c >> 3);
return (uint16_t)(r5 | g6 | b5);
}
static inline wuffs_base__color_u32_argb_premul //
wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(uint16_t rgb_565) {
uint32_t b5 = 0x1F & (rgb_565 >> 0);
uint32_t b = (b5 << 3) | (b5 >> 2);
uint32_t g6 = 0x3F & (rgb_565 >> 5);
uint32_t g = (g6 << 2) | (g6 >> 4);
uint32_t r5 = 0x1F & (rgb_565 >> 11);
uint32_t r = (r5 << 3) | (r5 >> 2);
return 0xFF000000 | (r << 16) | (g << 8) | (b << 0);
}
static inline uint8_t //
wuffs_base__color_u32_argb_premul__as__color_u8_gray(
wuffs_base__color_u32_argb_premul c) {
// Work in 16-bit color.
uint32_t cr = 0x101 * (0xFF & (c >> 16));
uint32_t cg = 0x101 * (0xFF & (c >> 8));
uint32_t cb = 0x101 * (0xFF & (c >> 0));
// These coefficients (the fractions 0.299, 0.587 and 0.114) are the same
// as those given by the JFIF specification.
//
// Note that 19595 + 38470 + 7471 equals 65536, also known as (1 << 16). We
// shift by 24, not just by 16, because the return value is 8-bit color, not
// 16-bit color.
uint32_t weighted_average = (19595 * cr) + (38470 * cg) + (7471 * cb) + 32768;
return (uint8_t)(weighted_average >> 24);
}
static inline uint16_t //
wuffs_base__color_u32_argb_premul__as__color_u16_gray(
wuffs_base__color_u32_argb_premul c) {
// Work in 16-bit color.
uint32_t cr = 0x101 * (0xFF & (c >> 16));
uint32_t cg = 0x101 * (0xFF & (c >> 8));
uint32_t cb = 0x101 * (0xFF & (c >> 0));
// These coefficients (the fractions 0.299, 0.587 and 0.114) are the same
// as those given by the JFIF specification.
//
// Note that 19595 + 38470 + 7471 equals 65536, also known as (1 << 16).
uint32_t weighted_average = (19595 * cr) + (38470 * cg) + (7471 * cb) + 32768;
return (uint16_t)(weighted_average >> 16);
}
// wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul converts
// from non-premultiplied alpha to premultiplied alpha.
static inline wuffs_base__color_u32_argb_premul //
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
uint32_t argb_nonpremul) {
// Multiplying by 0x101 (twice, once for alpha and once for color) converts
// from 8-bit to 16-bit color. Shifting right by 8 undoes that.
//
// Working in the higher bit depth can produce slightly different (and
// arguably slightly more accurate) results. For example, given 8-bit blue
// and alpha of 0x80 and 0x81:
//
// - ((0x80 * 0x81 ) / 0xFF ) = 0x40 = 0x40
// - ((0x8080 * 0x8181) / 0xFFFF) >> 8 = 0x4101 >> 8 = 0x41
uint32_t a = 0xFF & (argb_nonpremul >> 24);
uint32_t a16 = a * (0x101 * 0x101);
uint32_t r = 0xFF & (argb_nonpremul >> 16);
r = ((r * a16) / 0xFFFF) >> 8;
uint32_t g = 0xFF & (argb_nonpremul >> 8);
g = ((g * a16) / 0xFFFF) >> 8;
uint32_t b = 0xFF & (argb_nonpremul >> 0);
b = ((b * a16) / 0xFFFF) >> 8;
return (a << 24) | (r << 16) | (g << 8) | (b << 0);
}
// wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul converts
// from premultiplied alpha to non-premultiplied alpha.
static inline uint32_t //
wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
wuffs_base__color_u32_argb_premul c) {
uint32_t a = 0xFF & (c >> 24);
if (a == 0xFF) {
return c;
} else if (a == 0) {
return 0;
}
uint32_t a16 = a * 0x101;
uint32_t r = 0xFF & (c >> 16);
r = ((r * (0x101 * 0xFFFF)) / a16) >> 8;
uint32_t g = 0xFF & (c >> 8);
g = ((g * (0x101 * 0xFFFF)) / a16) >> 8;
uint32_t b = 0xFF & (c >> 0);
b = ((b * (0x101 * 0xFFFF)) / a16) >> 8;
return (a << 24) | (r << 16) | (g << 8) | (b << 0);
}
// wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul converts
// from 4x16LE non-premultiplied alpha to 4x8 premultiplied alpha.
static inline wuffs_base__color_u32_argb_premul //
wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
uint64_t argb_nonpremul) {
uint32_t a16 = ((uint32_t)(0xFFFF & (argb_nonpremul >> 48)));
uint32_t r16 = ((uint32_t)(0xFFFF & (argb_nonpremul >> 32)));
r16 = (r16 * a16) / 0xFFFF;
uint32_t g16 = ((uint32_t)(0xFFFF & (argb_nonpremul >> 16)));
g16 = (g16 * a16) / 0xFFFF;
uint32_t b16 = ((uint32_t)(0xFFFF & (argb_nonpremul >> 0)));
b16 = (b16 * a16) / 0xFFFF;
return ((a16 >> 8) << 24) | ((r16 >> 8) << 16) | ((g16 >> 8) << 8) |
((b16 >> 8) << 0);
}
// wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul converts
// from 4x8 premultiplied alpha to 4x16LE non-premultiplied alpha.
static inline uint64_t //
wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul(
wuffs_base__color_u32_argb_premul c) {
uint32_t a = 0xFF & (c >> 24);
if (a == 0xFF) {
uint64_t r16 = 0x101 * (0xFF & (c >> 16));
uint64_t g16 = 0x101 * (0xFF & (c >> 8));
uint64_t b16 = 0x101 * (0xFF & (c >> 0));
return 0xFFFF000000000000u | (r16 << 32) | (g16 << 16) | (b16 << 0);
} else if (a == 0) {
return 0;
}
uint64_t a16 = a * 0x101;
uint64_t r = 0xFF & (c >> 16);
uint64_t r16 = (r * (0x101 * 0xFFFF)) / a16;
uint64_t g = 0xFF & (c >> 8);
uint64_t g16 = (g * (0x101 * 0xFFFF)) / a16;
uint64_t b = 0xFF & (c >> 0);
uint64_t b16 = (b * (0x101 * 0xFFFF)) / a16;
return (a16 << 48) | (r16 << 32) | (g16 << 16) | (b16 << 0);
}
static inline uint64_t //
wuffs_base__color_u32__as__color_u64(uint32_t c) {
uint64_t a16 = 0x101 * (0xFF & (c >> 24));
uint64_t r16 = 0x101 * (0xFF & (c >> 16));
uint64_t g16 = 0x101 * (0xFF & (c >> 8));
uint64_t b16 = 0x101 * (0xFF & (c >> 0));
return (a16 << 48) | (r16 << 32) | (g16 << 16) | (b16 << 0);
}
static inline uint32_t //
wuffs_base__color_u64__as__color_u32(uint64_t c) {
uint32_t a = ((uint32_t)(0xFF & (c >> 56)));
uint32_t r = ((uint32_t)(0xFF & (c >> 40)));
uint32_t g = ((uint32_t)(0xFF & (c >> 24)));
uint32_t b = ((uint32_t)(0xFF & (c >> 8)));
return (a << 24) | (r << 16) | (g << 8) | (b << 0);
}
// --------
typedef uint8_t wuffs_base__pixel_blend;
// wuffs_base__pixel_blend encodes how to blend source and destination pixels,
// accounting for transparency. It encompasses the Porter-Duff compositing
// operators as well as the other blending modes defined by PDF.
//
// TODO: implement the other modes.
#define WUFFS_BASE__PIXEL_BLEND__SRC ((wuffs_base__pixel_blend)0)
#define WUFFS_BASE__PIXEL_BLEND__SRC_OVER ((wuffs_base__pixel_blend)1)
// --------
// wuffs_base__pixel_alpha_transparency is a pixel format's alpha channel
// model. It is a property of the pixel format in general, not of a specific
// pixel. An RGBA pixel format (with alpha) can still have fully opaque pixels.
typedef uint32_t wuffs_base__pixel_alpha_transparency;
#define WUFFS_BASE__PIXEL_ALPHA_TRANSPARENCY__OPAQUE 0
#define WUFFS_BASE__PIXEL_ALPHA_TRANSPARENCY__NONPREMULTIPLIED_ALPHA 1
#define WUFFS_BASE__PIXEL_ALPHA_TRANSPARENCY__PREMULTIPLIED_ALPHA 2
#define WUFFS_BASE__PIXEL_ALPHA_TRANSPARENCY__BINARY_ALPHA 3
// Deprecated: use WUFFS_BASE__PIXEL_ALPHA_TRANSPARENCY__NONPREMULTIPLIED_ALPHA
// instead.
#define WUFFS_BASE__PIXEL_ALPHA_TRANSPARENCY__NON_PREMULTIPLIED_ALPHA 1
// --------
#define WUFFS_BASE__PIXEL_FORMAT__NUM_PLANES_MAX 4
#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__INDEX_PLANE 0
#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__COLOR_PLANE 3
// A palette is 256 entries ร— 4 bytes per entry (e.g. BGRA).
#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH 1024
// wuffs_base__pixel_format encodes the format of the bytes that constitute an
// image frame's pixel data.
//
// See https://github.com/google/wuffs/blob/main/doc/note/pixel-formats.md
//
// Do not manipulate its bits directly; they are private implementation
// details. Use methods such as wuffs_base__pixel_format__num_planes instead.
typedef struct wuffs_base__pixel_format__struct {
uint32_t repr;
#ifdef __cplusplus
inline bool is_valid() const;
inline uint32_t bits_per_pixel() const;
inline bool is_direct() const;
inline bool is_indexed() const;
inline bool is_interleaved() const;
inline bool is_planar() const;
inline uint32_t num_planes() const;
inline wuffs_base__pixel_alpha_transparency transparency() const;
#endif // __cplusplus
} wuffs_base__pixel_format;
static inline wuffs_base__pixel_format //
wuffs_base__make_pixel_format(uint32_t repr) {
wuffs_base__pixel_format f;
f.repr = repr;
return f;
}
// Common 8-bit-depth pixel formats. This list is not exhaustive; not all valid
// wuffs_base__pixel_format values are present.
#define WUFFS_BASE__PIXEL_FORMAT__INVALID 0x00000000
#define WUFFS_BASE__PIXEL_FORMAT__A 0x02000008
#define WUFFS_BASE__PIXEL_FORMAT__Y 0x20000008
#define WUFFS_BASE__PIXEL_FORMAT__Y_16LE 0x2000000B
#define WUFFS_BASE__PIXEL_FORMAT__Y_16BE 0x2010000B
#define WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL 0x21000008
#define WUFFS_BASE__PIXEL_FORMAT__YA_PREMUL 0x22000008
#define WUFFS_BASE__PIXEL_FORMAT__YCBCR 0x40020888
#define WUFFS_BASE__PIXEL_FORMAT__YCBCRA_NONPREMUL 0x41038888
#define WUFFS_BASE__PIXEL_FORMAT__YCBCRK 0x50038888
#define WUFFS_BASE__PIXEL_FORMAT__YCOCG 0x60020888
#define WUFFS_BASE__PIXEL_FORMAT__YCOCGA_NONPREMUL 0x61038888
#define WUFFS_BASE__PIXEL_FORMAT__YCOCGK 0x70038888
#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL 0x81040008
#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL 0x82040008
#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY 0x83040008
#define WUFFS_BASE__PIXEL_FORMAT__BGR_565 0x80000565
#define WUFFS_BASE__PIXEL_FORMAT__BGR 0x80000888
#define WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL 0x81008888
#define WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE 0x8100BBBB
#define WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL 0x82008888
#define WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE 0x8200BBBB
#define WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY 0x83008888
#define WUFFS_BASE__PIXEL_FORMAT__BGRX 0x90008888
#define WUFFS_BASE__PIXEL_FORMAT__RGB 0xA0000888
#define WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL 0xA1008888
#define WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE 0xA100BBBB
#define WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL 0xA2008888
#define WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE 0xA200BBBB
#define WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY 0xA3008888
#define WUFFS_BASE__PIXEL_FORMAT__RGBX 0xB0008888
#define WUFFS_BASE__PIXEL_FORMAT__CMY 0xC0020888
#define WUFFS_BASE__PIXEL_FORMAT__CMYK 0xD0038888
extern const uint32_t wuffs_base__pixel_format__bits_per_channel[16];
static inline bool //
wuffs_base__pixel_format__is_valid(const wuffs_base__pixel_format* f) {
return f->repr != 0;
}
// wuffs_base__pixel_format__bits_per_pixel returns the number of bits per
// pixel for interleaved pixel formats, and returns 0 for planar pixel formats.
static inline uint32_t //
wuffs_base__pixel_format__bits_per_pixel(const wuffs_base__pixel_format* f) {
if (((f->repr >> 16) & 0x03) != 0) {
return 0;
}
return wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 0)] +
wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 4)] +
wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 8)] +
wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 12)];
}
static inline bool //
wuffs_base__pixel_format__is_direct(const wuffs_base__pixel_format* f) {
return ((f->repr >> 18) & 0x01) == 0;
}
static inline bool //
wuffs_base__pixel_format__is_indexed(const wuffs_base__pixel_format* f) {
return ((f->repr >> 18) & 0x01) != 0;
}
static inline bool //
wuffs_base__pixel_format__is_interleaved(const wuffs_base__pixel_format* f) {
return ((f->repr >> 16) & 0x03) == 0;
}
static inline bool //
wuffs_base__pixel_format__is_planar(const wuffs_base__pixel_format* f) {
return ((f->repr >> 16) & 0x03) != 0;
}
static inline uint32_t //
wuffs_base__pixel_format__num_planes(const wuffs_base__pixel_format* f) {
return ((f->repr >> 16) & 0x03) + 1;
}
static inline wuffs_base__pixel_alpha_transparency //
wuffs_base__pixel_format__transparency(const wuffs_base__pixel_format* f) {
return (wuffs_base__pixel_alpha_transparency)((f->repr >> 24) & 0x03);
}
#ifdef __cplusplus
inline bool //
wuffs_base__pixel_format::is_valid() const {
return wuffs_base__pixel_format__is_valid(this);
}
inline uint32_t //
wuffs_base__pixel_format::bits_per_pixel() const {
return wuffs_base__pixel_format__bits_per_pixel(this);
}
inline bool //
wuffs_base__pixel_format::is_direct() const {
return wuffs_base__pixel_format__is_direct(this);
}
inline bool //
wuffs_base__pixel_format::is_indexed() const {
return wuffs_base__pixel_format__is_indexed(this);
}
inline bool //
wuffs_base__pixel_format::is_interleaved() const {
return wuffs_base__pixel_format__is_interleaved(this);
}
inline bool //
wuffs_base__pixel_format::is_planar() const {
return wuffs_base__pixel_format__is_planar(this);
}
inline uint32_t //
wuffs_base__pixel_format::num_planes() const {
return wuffs_base__pixel_format__num_planes(this);
}
inline wuffs_base__pixel_alpha_transparency //
wuffs_base__pixel_format::transparency() const {
return wuffs_base__pixel_format__transparency(this);
}
#endif // __cplusplus
// --------
// wuffs_base__pixel_subsampling encodes whether sample values cover one pixel
// or cover multiple pixels.
//
// See https://github.com/google/wuffs/blob/main/doc/note/pixel-subsampling.md
//
// Do not manipulate its bits directly; they are private implementation
// details. Use methods such as wuffs_base__pixel_subsampling__bias_x instead.
typedef struct wuffs_base__pixel_subsampling__struct {
uint32_t repr;
#ifdef __cplusplus
inline uint32_t bias_x(uint32_t plane) const;
inline uint32_t denominator_x(uint32_t plane) const;
inline uint32_t bias_y(uint32_t plane) const;
inline uint32_t denominator_y(uint32_t plane) const;
#endif // __cplusplus
} wuffs_base__pixel_subsampling;
static inline wuffs_base__pixel_subsampling //
wuffs_base__make_pixel_subsampling(uint32_t repr) {
wuffs_base__pixel_subsampling s;
s.repr = repr;
return s;
}
#define WUFFS_BASE__PIXEL_SUBSAMPLING__NONE 0x00000000
#define WUFFS_BASE__PIXEL_SUBSAMPLING__444 0x000000
#define WUFFS_BASE__PIXEL_SUBSAMPLING__440 0x010100
#define WUFFS_BASE__PIXEL_SUBSAMPLING__422 0x101000
#define WUFFS_BASE__PIXEL_SUBSAMPLING__420 0x111100
#define WUFFS_BASE__PIXEL_SUBSAMPLING__411 0x303000
#define WUFFS_BASE__PIXEL_SUBSAMPLING__410 0x313100
static inline uint32_t //
wuffs_base__pixel_subsampling__bias_x(const wuffs_base__pixel_subsampling* s,
uint32_t plane) {
uint32_t shift = ((plane & 0x03) * 8) + 6;
return (s->repr >> shift) & 0x03;
}
static inline uint32_t //
wuffs_base__pixel_subsampling__denominator_x(
const wuffs_base__pixel_subsampling* s,
uint32_t plane) {
uint32_t shift = ((plane & 0x03) * 8) + 4;
return ((s->repr >> shift) & 0x03) + 1;
}
static inline uint32_t //
wuffs_base__pixel_subsampling__bias_y(const wuffs_base__pixel_subsampling* s,
uint32_t plane) {
uint32_t shift = ((plane & 0x03) * 8) + 2;
return (s->repr >> shift) & 0x03;
}
static inline uint32_t //
wuffs_base__pixel_subsampling__denominator_y(
const wuffs_base__pixel_subsampling* s,
uint32_t plane) {
uint32_t shift = ((plane & 0x03) * 8) + 0;
return ((s->repr >> shift) & 0x03) + 1;
}
#ifdef __cplusplus
inline uint32_t //
wuffs_base__pixel_subsampling::bias_x(uint32_t plane) const {
return wuffs_base__pixel_subsampling__bias_x(this, plane);
}
inline uint32_t //
wuffs_base__pixel_subsampling::denominator_x(uint32_t plane) const {
return wuffs_base__pixel_subsampling__denominator_x(this, plane);
}
inline uint32_t //
wuffs_base__pixel_subsampling::bias_y(uint32_t plane) const {
return wuffs_base__pixel_subsampling__bias_y(this, plane);
}
inline uint32_t //
wuffs_base__pixel_subsampling::denominator_y(uint32_t plane) const {
return wuffs_base__pixel_subsampling__denominator_y(this, plane);
}
#endif // __cplusplus
// --------
typedef struct wuffs_base__pixel_config__struct {
// Do not access the private_impl's fields directly. There is no API/ABI
// compatibility or safety guarantee if you do so.
struct {
wuffs_base__pixel_format pixfmt;
wuffs_base__pixel_subsampling pixsub;
uint32_t width;
uint32_t height;
} private_impl;
#ifdef __cplusplus
inline void set(uint32_t pixfmt_repr,
uint32_t pixsub_repr,
uint32_t width,
uint32_t height);
inline void invalidate();
inline bool is_valid() const;
inline wuffs_base__pixel_format pixel_format() const;
inline wuffs_base__pixel_subsampling pixel_subsampling() const;
inline wuffs_base__rect_ie_u32 bounds() const;
inline uint32_t width() const;
inline uint32_t height() const;
inline uint64_t pixbuf_len() const;
#endif // __cplusplus
} wuffs_base__pixel_config;
static inline wuffs_base__pixel_config //
wuffs_base__null_pixel_config() {
wuffs_base__pixel_config ret;
ret.private_impl.pixfmt.repr = 0;
ret.private_impl.pixsub.repr = 0;
ret.private_impl.width = 0;
ret.private_impl.height = 0;
return ret;
}
// TODO: Should this function return bool? An error type?
static inline void //
wuffs_base__pixel_config__set(wuffs_base__pixel_config* c,
uint32_t pixfmt_repr,
uint32_t pixsub_repr,
uint32_t width,
uint32_t height) {
if (!c) {
return;
}
if (pixfmt_repr) {
uint64_t wh = ((uint64_t)width) * ((uint64_t)height);
// TODO: handle things other than 1 byte per pixel.
if (wh <= ((uint64_t)SIZE_MAX)) {
c->private_impl.pixfmt.repr = pixfmt_repr;
c->private_impl.pixsub.repr = pixsub_repr;
c->private_impl.width = width;
c->private_impl.height = height;
return;
}
}
c->private_impl.pixfmt.repr = 0;
c->private_impl.pixsub.repr = 0;
c->private_impl.width = 0;
c->private_impl.height = 0;
}
static inline void //
wuffs_base__pixel_config__invalidate(wuffs_base__pixel_config* c) {
if (c) {
c->private_impl.pixfmt.repr = 0;
c->private_impl.pixsub.repr = 0;
c->private_impl.width = 0;
c->private_impl.height = 0;
}
}
static inline bool //
wuffs_base__pixel_config__is_valid(const wuffs_base__pixel_config* c) {
return c && c->private_impl.pixfmt.repr;
}
static inline wuffs_base__pixel_format //
wuffs_base__pixel_config__pixel_format(const wuffs_base__pixel_config* c) {
return c ? c->private_impl.pixfmt : wuffs_base__make_pixel_format(0);
}
static inline wuffs_base__pixel_subsampling //
wuffs_base__pixel_config__pixel_subsampling(const wuffs_base__pixel_config* c) {
return c ? c->private_impl.pixsub : wuffs_base__make_pixel_subsampling(0);
}
static inline wuffs_base__rect_ie_u32 //
wuffs_base__pixel_config__bounds(const wuffs_base__pixel_config* c) {
if (c) {
wuffs_base__rect_ie_u32 ret;
ret.min_incl_x = 0;
ret.min_incl_y = 0;
ret.max_excl_x = c->private_impl.width;
ret.max_excl_y = c->private_impl.height;
return ret;
}
wuffs_base__rect_ie_u32 ret;
ret.min_incl_x = 0;
ret.min_incl_y = 0;
ret.max_excl_x = 0;
ret.max_excl_y = 0;
return ret;
}
static inline uint32_t //
wuffs_base__pixel_config__width(const wuffs_base__pixel_config* c) {
return c ? c->private_impl.width : 0;
}
static inline uint32_t //
wuffs_base__pixel_config__height(const wuffs_base__pixel_config* c) {
return c ? c->private_impl.height : 0;
}
// TODO: this is the right API for planar (not interleaved) pixbufs? Should it
// allow decoding into a color model different from the format's intrinsic one?
// For example, decoding a JPEG image straight to RGBA instead of to YCbCr?
static inline uint64_t //
wuffs_base__pixel_config__pixbuf_len(const wuffs_base__pixel_config* c) {
if (!c) {
return 0;
}
if (wuffs_base__pixel_format__is_planar(&c->private_impl.pixfmt)) {
// TODO: support planar pixel formats, concious of pixel subsampling.
return 0;
}
uint32_t bits_per_pixel =
wuffs_base__pixel_format__bits_per_pixel(&c->private_impl.pixfmt);
if ((bits_per_pixel == 0) || ((bits_per_pixel % 8) != 0)) {
// TODO: support fraction-of-byte pixels, e.g. 1 bit per pixel?
return 0;
}
uint64_t bytes_per_pixel = bits_per_pixel / 8;
uint64_t n =
((uint64_t)c->private_impl.width) * ((uint64_t)c->private_impl.height);
if (n > (UINT64_MAX / bytes_per_pixel)) {
return 0;
}
n *= bytes_per_pixel;
if (wuffs_base__pixel_format__is_indexed(&c->private_impl.pixfmt)) {
if (n >
(UINT64_MAX - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH)) {
return 0;
}
n += WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH;
}
return n;
}
#ifdef __cplusplus
inline void //
wuffs_base__pixel_config::set(uint32_t pixfmt_repr,
uint32_t pixsub_repr,
uint32_t width,
uint32_t height) {
wuffs_base__pixel_config__set(this, pixfmt_repr, pixsub_repr, width, height);
}
inline void //
wuffs_base__pixel_config::invalidate() {
wuffs_base__pixel_config__invalidate(this);
}
inline bool //
wuffs_base__pixel_config::is_valid() const {
return wuffs_base__pixel_config__is_valid(this);
}
inline wuffs_base__pixel_format //
wuffs_base__pixel_config::pixel_format() const {
return wuffs_base__pixel_config__pixel_format(this);
}
inline wuffs_base__pixel_subsampling //
wuffs_base__pixel_config::pixel_subsampling() const {
return wuffs_base__pixel_config__pixel_subsampling(this);
}
inline wuffs_base__rect_ie_u32 //
wuffs_base__pixel_config::bounds() const {
return wuffs_base__pixel_config__bounds(this);
}
inline uint32_t //
wuffs_base__pixel_config::width() const {
return wuffs_base__pixel_config__width(this);
}
inline uint32_t //
wuffs_base__pixel_config::height() const {
return wuffs_base__pixel_config__height(this);
}
inline uint64_t //
wuffs_base__pixel_config::pixbuf_len() const {
return wuffs_base__pixel_config__pixbuf_len(this);
}
#endif // __cplusplus
// --------
typedef struct wuffs_base__image_config__struct {
wuffs_base__pixel_config pixcfg;
// Do not access the private_impl's fields directly. There is no API/ABI
// compatibility or safety guarantee if you do so.
struct {
uint64_t first_frame_io_position;
bool first_frame_is_opaque;
} private_impl;
#ifdef __cplusplus
inline void set(uint32_t pixfmt_repr,
uint32_t pixsub_repr,
uint32_t width,
uint32_t height,
uint64_t first_frame_io_position,
bool first_frame_is_opaque);
inline void invalidate();
inline bool is_valid() const;
inline uint64_t first_frame_io_position() const;
inline bool first_frame_is_opaque() const;
#endif // __cplusplus
} wuffs_base__image_config;
static inline wuffs_base__image_config //
wuffs_base__null_image_config() {
wuffs_base__image_config ret;
ret.pixcfg = wuffs_base__null_pixel_config();
ret.private_impl.first_frame_io_position = 0;
ret.private_impl.first_frame_is_opaque = false;
return ret;
}
// TODO: Should this function return bool? An error type?
static inline void //
wuffs_base__image_config__set(wuffs_base__image_config* c,
uint32_t pixfmt_repr,
uint32_t pixsub_repr,
uint32_t width,
uint32_t height,
uint64_t first_frame_io_position,
bool first_frame_is_opaque) {
if (!c) {
return;
}
if (pixfmt_repr) {
c->pixcfg.private_impl.pixfmt.repr = pixfmt_repr;
c->pixcfg.private_impl.pixsub.repr = pixsub_repr;
c->pixcfg.private_impl.width = width;
c->pixcfg.private_impl.height = height;
c->private_impl.first_frame_io_position = first_frame_io_position;
c->private_impl.first_frame_is_opaque = first_frame_is_opaque;
return;
}
c->pixcfg.private_impl.pixfmt.repr = 0;
c->pixcfg.private_impl.pixsub.repr = 0;
c->pixcfg.private_impl.width = 0;
c->pixcfg.private_impl.height = 0;
c->private_impl.first_frame_io_position = 0;
c->private_impl.first_frame_is_opaque = 0;
}
static inline void //
wuffs_base__image_config__invalidate(wuffs_base__image_config* c) {
if (c) {
c->pixcfg.private_impl.pixfmt.repr = 0;
c->pixcfg.private_impl.pixsub.repr = 0;
c->pixcfg.private_impl.width = 0;
c->pixcfg.private_impl.height = 0;
c->private_impl.first_frame_io_position = 0;
c->private_impl.first_frame_is_opaque = 0;
}
}
static inline bool //
wuffs_base__image_config__is_valid(const wuffs_base__image_config* c) {
return c && wuffs_base__pixel_config__is_valid(&(c->pixcfg));
}
static inline uint64_t //
wuffs_base__image_config__first_frame_io_position(
const wuffs_base__image_config* c) {
return c ? c->private_impl.first_frame_io_position : 0;
}
static inline bool //
wuffs_base__image_config__first_frame_is_opaque(
const wuffs_base__image_config* c) {
return c ? c->private_impl.first_frame_is_opaque : false;
}
#ifdef __cplusplus
inline void //
wuffs_base__image_config::set(uint32_t pixfmt_repr,
uint32_t pixsub_repr,
uint32_t width,
uint32_t height,
uint64_t first_frame_io_position,
bool first_frame_is_opaque) {
wuffs_base__image_config__set(this, pixfmt_repr, pixsub_repr, width, height,
first_frame_io_position, first_frame_is_opaque);
}
inline void //
wuffs_base__image_config::invalidate() {
wuffs_base__image_config__invalidate(this);
}
inline bool //
wuffs_base__image_config::is_valid() const {
return wuffs_base__image_config__is_valid(this);
}
inline uint64_t //
wuffs_base__image_config::first_frame_io_position() const {
return wuffs_base__image_config__first_frame_io_position(this);
}
inline bool //
wuffs_base__image_config::first_frame_is_opaque() const {
return wuffs_base__image_config__first_frame_is_opaque(this);
}
#endif // __cplusplus
// --------
// wuffs_base__animation_disposal encodes, for an animated image, how to
// dispose of a frame after displaying it:
// - None means to draw the next frame on top of this one.
// - Restore Background means to clear the frame's dirty rectangle to "the
// background color" (in practice, this means transparent black) before
// drawing the next frame.
// - Restore Previous means to undo the current frame, so that the next frame
// is drawn on top of the previous one.
typedef uint8_t wuffs_base__animation_disposal;
#define WUFFS_BASE__ANIMATION_DISPOSAL__NONE ((wuffs_base__animation_disposal)0)
#define WUFFS_BASE__ANIMATION_DISPOSAL__RESTORE_BACKGROUND \
((wuffs_base__animation_disposal)1)
#define WUFFS_BASE__ANIMATION_DISPOSAL__RESTORE_PREVIOUS \
((wuffs_base__animation_disposal)2)
// --------
typedef struct wuffs_base__frame_config__struct {
// Do not access the private_impl's fields directly. There is no API/ABI
// compatibility or safety guarantee if you do so.
struct {
wuffs_base__rect_ie_u32 bounds;
wuffs_base__flicks duration;
uint64_t index;
uint64_t io_position;
wuffs_base__animation_disposal disposal;
bool opaque_within_bounds;
bool overwrite_instead_of_blend;
wuffs_base__color_u32_argb_premul background_color;
} private_impl;
#ifdef __cplusplus
inline void set(wuffs_base__rect_ie_u32 bounds,
wuffs_base__flicks duration,
uint64_t index,
uint64_t io_position,
wuffs_base__animation_disposal disposal,
bool opaque_within_bounds,
bool overwrite_instead_of_blend,
wuffs_base__color_u32_argb_premul background_color);
inline wuffs_base__rect_ie_u32 bounds() const;
inline uint32_t width() const;
inline uint32_t height() const;
inline wuffs_base__flicks duration() const;
inline uint64_t index() const;
inline uint64_t io_position() const;
inline wuffs_base__animation_disposal disposal() const;
inline bool opaque_within_bounds() const;
inline bool overwrite_instead_of_blend() const;
inline wuffs_base__color_u32_argb_premul background_color() const;
#endif // __cplusplus
} wuffs_base__frame_config;
static inline wuffs_base__frame_config //
wuffs_base__null_frame_config() {
wuffs_base__frame_config ret;
ret.private_impl.bounds = wuffs_base__make_rect_ie_u32(0, 0, 0, 0);
ret.private_impl.duration = 0;
ret.private_impl.index = 0;
ret.private_impl.io_position = 0;
ret.private_impl.disposal = 0;
ret.private_impl.opaque_within_bounds = false;
ret.private_impl.overwrite_instead_of_blend = false;
return ret;
}
static inline void //
wuffs_base__frame_config__set(
wuffs_base__frame_config* c,
wuffs_base__rect_ie_u32 bounds,
wuffs_base__flicks duration,
uint64_t index,
uint64_t io_position,
wuffs_base__animation_disposal disposal,
bool opaque_within_bounds,
bool overwrite_instead_of_blend,
wuffs_base__color_u32_argb_premul background_color) {
if (!c) {
return;
}
c->private_impl.bounds = bounds;
c->private_impl.duration = duration;
c->private_impl.index = index;
c->private_impl.io_position = io_position;
c->private_impl.disposal = disposal;
c->private_impl.opaque_within_bounds = opaque_within_bounds;
c->private_impl.overwrite_instead_of_blend = overwrite_instead_of_blend;
c->private_impl.background_color = background_color;
}
static inline wuffs_base__rect_ie_u32 //
wuffs_base__frame_config__bounds(const wuffs_base__frame_config* c) {
if (c) {
return c->private_impl.bounds;
}
wuffs_base__rect_ie_u32 ret;
ret.min_incl_x = 0;
ret.min_incl_y = 0;
ret.max_excl_x = 0;
ret.max_excl_y = 0;
return ret;
}
static inline uint32_t //
wuffs_base__frame_config__width(const wuffs_base__frame_config* c) {
return c ? wuffs_base__rect_ie_u32__width(&c->private_impl.bounds) : 0;
}
static inline uint32_t //
wuffs_base__frame_config__height(const wuffs_base__frame_config* c) {
return c ? wuffs_base__rect_ie_u32__height(&c->private_impl.bounds) : 0;
}
// wuffs_base__frame_config__duration returns the amount of time to display
// this frame. Zero means to display forever - a still (non-animated) image.
static inline wuffs_base__flicks //
wuffs_base__frame_config__duration(const wuffs_base__frame_config* c) {
return c ? c->private_impl.duration : 0;
}
// wuffs_base__frame_config__index returns the index of this frame. The first
// frame in an image has index 0, the second frame has index 1, and so on.
static inline uint64_t //
wuffs_base__frame_config__index(const wuffs_base__frame_config* c) {
return c ? c->private_impl.index : 0;
}
// wuffs_base__frame_config__io_position returns the I/O stream position before
// the frame config.
static inline uint64_t //
wuffs_base__frame_config__io_position(const wuffs_base__frame_config* c) {
return c ? c->private_impl.io_position : 0;
}
// wuffs_base__frame_config__disposal returns, for an animated image, how to
// dispose of this frame after displaying it.
static inline wuffs_base__animation_disposal //
wuffs_base__frame_config__disposal(const wuffs_base__frame_config* c) {
return c ? c->private_impl.disposal : 0;
}
// wuffs_base__frame_config__opaque_within_bounds returns whether all pixels
// within the frame's bounds are fully opaque. It makes no claim about pixels
// outside the frame bounds but still inside the overall image. The two
// bounding rectangles can differ for animated images.
//
// Its semantics are conservative. It is valid for a fully opaque frame to have
// this value be false: a false negative.
//
// If true, drawing the frame with WUFFS_BASE__PIXEL_BLEND__SRC and
// WUFFS_BASE__PIXEL_BLEND__SRC_OVER should be equivalent, in terms of
// resultant pixels, but the former may be faster.
static inline bool //
wuffs_base__frame_config__opaque_within_bounds(
const wuffs_base__frame_config* c) {
return c && c->private_impl.opaque_within_bounds;
}
// wuffs_base__frame_config__overwrite_instead_of_blend returns, for an
// animated image, whether to ignore the previous image state (within the frame
// bounds) when drawing this incremental frame. Equivalently, whether to use
// WUFFS_BASE__PIXEL_BLEND__SRC instead of WUFFS_BASE__PIXEL_BLEND__SRC_OVER.
//
// The WebP spec (https://developers.google.com/speed/webp/docs/riff_container)
// calls this the "Blending method" bit. WebP's "Do not blend" corresponds to
// Wuffs' "overwrite_instead_of_blend".
static inline bool //
wuffs_base__frame_config__overwrite_instead_of_blend(
const wuffs_base__frame_config* c) {
return c && c->private_impl.overwrite_instead_of_blend;
}
static inline wuffs_base__color_u32_argb_premul //
wuffs_base__frame_config__background_color(const wuffs_base__frame_config* c) {
return c ? c->private_impl.background_color : 0;
}
#ifdef __cplusplus
inline void //
wuffs_base__frame_config::set(
wuffs_base__rect_ie_u32 bounds,
wuffs_base__flicks duration,
uint64_t index,
uint64_t io_position,
wuffs_base__animation_disposal disposal,
bool opaque_within_bounds,
bool overwrite_instead_of_blend,
wuffs_base__color_u32_argb_premul background_color) {
wuffs_base__frame_config__set(this, bounds, duration, index, io_position,
disposal, opaque_within_bounds,
overwrite_instead_of_blend, background_color);
}
inline wuffs_base__rect_ie_u32 //
wuffs_base__frame_config::bounds() const {
return wuffs_base__frame_config__bounds(this);
}
inline uint32_t //
wuffs_base__frame_config::width() const {
return wuffs_base__frame_config__width(this);
}
inline uint32_t //
wuffs_base__frame_config::height() const {
return wuffs_base__frame_config__height(this);
}
inline wuffs_base__flicks //
wuffs_base__frame_config::duration() const {
return wuffs_base__frame_config__duration(this);
}
inline uint64_t //
wuffs_base__frame_config::index() const {
return wuffs_base__frame_config__index(this);
}
inline uint64_t //
wuffs_base__frame_config::io_position() const {
return wuffs_base__frame_config__io_position(this);
}
inline wuffs_base__animation_disposal //
wuffs_base__frame_config::disposal() const {
return wuffs_base__frame_config__disposal(this);
}
inline bool //
wuffs_base__frame_config::opaque_within_bounds() const {
return wuffs_base__frame_config__opaque_within_bounds(this);
}
inline bool //
wuffs_base__frame_config::overwrite_instead_of_blend() const {
return wuffs_base__frame_config__overwrite_instead_of_blend(this);
}
inline wuffs_base__color_u32_argb_premul //
wuffs_base__frame_config::background_color() const {
return wuffs_base__frame_config__background_color(this);
}
#endif // __cplusplus
// --------
typedef struct wuffs_base__pixel_buffer__struct {
wuffs_base__pixel_config pixcfg;
// Do not access the private_impl's fields directly. There is no API/ABI
// compatibility or safety guarantee if you do so.
struct {
wuffs_base__table_u8 planes[WUFFS_BASE__PIXEL_FORMAT__NUM_PLANES_MAX];
// TODO: color spaces.
} private_impl;
#ifdef __cplusplus
inline wuffs_base__status set_interleaved(
const wuffs_base__pixel_config* pixcfg,
wuffs_base__table_u8 primary_memory,
wuffs_base__slice_u8 palette_memory);
inline wuffs_base__status set_from_slice(
const wuffs_base__pixel_config* pixcfg,
wuffs_base__slice_u8 pixbuf_memory);
inline wuffs_base__status set_from_table(
const wuffs_base__pixel_config* pixcfg,
wuffs_base__table_u8 primary_memory);
inline wuffs_base__slice_u8 palette();
inline wuffs_base__slice_u8 palette_or_else(wuffs_base__slice_u8 fallback);
inline wuffs_base__pixel_format pixel_format() const;
inline wuffs_base__table_u8 plane(uint32_t p);
inline wuffs_base__color_u32_argb_premul color_u32_at(uint32_t x,
uint32_t y) const;
inline wuffs_base__status set_color_u32_at(
uint32_t x,
uint32_t y,
wuffs_base__color_u32_argb_premul color);
inline wuffs_base__status set_color_u32_fill_rect(
wuffs_base__rect_ie_u32 rect,
wuffs_base__color_u32_argb_premul color);
#endif // __cplusplus
} wuffs_base__pixel_buffer;
static inline wuffs_base__pixel_buffer //
wuffs_base__null_pixel_buffer() {
wuffs_base__pixel_buffer ret;
ret.pixcfg = wuffs_base__null_pixel_config();
ret.private_impl.planes[0] = wuffs_base__empty_table_u8();
ret.private_impl.planes[1] = wuffs_base__empty_table_u8();
ret.private_impl.planes[2] = wuffs_base__empty_table_u8();
ret.private_impl.planes[3] = wuffs_base__empty_table_u8();
return ret;
}
static inline wuffs_base__status //
wuffs_base__pixel_buffer__set_interleaved(
wuffs_base__pixel_buffer* pb,
const wuffs_base__pixel_config* pixcfg,
wuffs_base__table_u8 primary_memory,
wuffs_base__slice_u8 palette_memory) {
if (!pb) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
memset(pb, 0, sizeof(*pb));
if (!pixcfg ||
wuffs_base__pixel_format__is_planar(&pixcfg->private_impl.pixfmt)) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if (wuffs_base__pixel_format__is_indexed(&pixcfg->private_impl.pixfmt) &&
(palette_memory.len <
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH)) {
return wuffs_base__make_status(
wuffs_base__error__bad_argument_length_too_short);
}
uint32_t bits_per_pixel =
wuffs_base__pixel_format__bits_per_pixel(&pixcfg->private_impl.pixfmt);
if ((bits_per_pixel == 0) || ((bits_per_pixel % 8) != 0)) {
// TODO: support fraction-of-byte pixels, e.g. 1 bit per pixel?
return wuffs_base__make_status(wuffs_base__error__unsupported_option);
}
uint64_t bytes_per_pixel = bits_per_pixel / 8;
uint64_t width_in_bytes =
((uint64_t)pixcfg->private_impl.width) * bytes_per_pixel;
if ((width_in_bytes > primary_memory.width) ||
(pixcfg->private_impl.height > primary_memory.height)) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
pb->pixcfg = *pixcfg;
pb->private_impl.planes[0] = primary_memory;
if (wuffs_base__pixel_format__is_indexed(&pixcfg->private_impl.pixfmt)) {
wuffs_base__table_u8* tab =
&pb->private_impl
.planes[WUFFS_BASE__PIXEL_FORMAT__INDEXED__COLOR_PLANE];
tab->ptr = palette_memory.ptr;
tab->width = WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH;
tab->height = 1;
tab->stride = WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH;
}
return wuffs_base__make_status(NULL);
}
static inline wuffs_base__status //
wuffs_base__pixel_buffer__set_from_slice(wuffs_base__pixel_buffer* pb,
const wuffs_base__pixel_config* pixcfg,
wuffs_base__slice_u8 pixbuf_memory) {
if (!pb) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
memset(pb, 0, sizeof(*pb));
if (!pixcfg) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if (wuffs_base__pixel_format__is_planar(&pixcfg->private_impl.pixfmt)) {
// TODO: support planar pixel formats, concious of pixel subsampling.
return wuffs_base__make_status(wuffs_base__error__unsupported_option);
}
uint32_t bits_per_pixel =
wuffs_base__pixel_format__bits_per_pixel(&pixcfg->private_impl.pixfmt);
if ((bits_per_pixel == 0) || ((bits_per_pixel % 8) != 0)) {
// TODO: support fraction-of-byte pixels, e.g. 1 bit per pixel?
return wuffs_base__make_status(wuffs_base__error__unsupported_option);
}
uint64_t bytes_per_pixel = bits_per_pixel / 8;
uint8_t* ptr = pixbuf_memory.ptr;
uint64_t len = pixbuf_memory.len;
if (wuffs_base__pixel_format__is_indexed(&pixcfg->private_impl.pixfmt)) {
// Split a WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH byte
// chunk (1024 bytes = 256 palette entries ร— 4 bytes per entry) from the
// start of pixbuf_memory. We split from the start, not the end, so that
// the both chunks' pointers have the same alignment as the original
// pointer, up to an alignment of 1024.
if (len < WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return wuffs_base__make_status(
wuffs_base__error__bad_argument_length_too_short);
}
wuffs_base__table_u8* tab =
&pb->private_impl
.planes[WUFFS_BASE__PIXEL_FORMAT__INDEXED__COLOR_PLANE];
tab->ptr = ptr;
tab->width = WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH;
tab->height = 1;
tab->stride = WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH;
ptr += WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH;
len -= WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH;
}
uint64_t wh = ((uint64_t)pixcfg->private_impl.width) *
((uint64_t)pixcfg->private_impl.height);
size_t width = (size_t)(pixcfg->private_impl.width);
if ((wh > (UINT64_MAX / bytes_per_pixel)) ||
(width > (SIZE_MAX / bytes_per_pixel))) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
wh *= bytes_per_pixel;
width = ((size_t)(width * bytes_per_pixel));
if (wh > len) {
return wuffs_base__make_status(
wuffs_base__error__bad_argument_length_too_short);
}
pb->pixcfg = *pixcfg;
wuffs_base__table_u8* tab = &pb->private_impl.planes[0];
tab->ptr = ptr;
tab->width = width;
tab->height = pixcfg->private_impl.height;
tab->stride = width;
return wuffs_base__make_status(NULL);
}
// Deprecated: does not handle indexed pixel configurations. Use
// wuffs_base__pixel_buffer__set_interleaved instead.
static inline wuffs_base__status //
wuffs_base__pixel_buffer__set_from_table(wuffs_base__pixel_buffer* pb,
const wuffs_base__pixel_config* pixcfg,
wuffs_base__table_u8 primary_memory) {
if (!pb) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
memset(pb, 0, sizeof(*pb));
if (!pixcfg ||
wuffs_base__pixel_format__is_indexed(&pixcfg->private_impl.pixfmt) ||
wuffs_base__pixel_format__is_planar(&pixcfg->private_impl.pixfmt)) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
uint32_t bits_per_pixel =
wuffs_base__pixel_format__bits_per_pixel(&pixcfg->private_impl.pixfmt);
if ((bits_per_pixel == 0) || ((bits_per_pixel % 8) != 0)) {
// TODO: support fraction-of-byte pixels, e.g. 1 bit per pixel?
return wuffs_base__make_status(wuffs_base__error__unsupported_option);
}
uint64_t bytes_per_pixel = bits_per_pixel / 8;
uint64_t width_in_bytes =
((uint64_t)pixcfg->private_impl.width) * bytes_per_pixel;
if ((width_in_bytes > primary_memory.width) ||
(pixcfg->private_impl.height > primary_memory.height)) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
pb->pixcfg = *pixcfg;
pb->private_impl.planes[0] = primary_memory;
return wuffs_base__make_status(NULL);
}
// wuffs_base__pixel_buffer__palette returns the palette color data. If
// non-empty, it will have length
// WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH.
static inline wuffs_base__slice_u8 //
wuffs_base__pixel_buffer__palette(wuffs_base__pixel_buffer* pb) {
if (pb &&
wuffs_base__pixel_format__is_indexed(&pb->pixcfg.private_impl.pixfmt)) {
wuffs_base__table_u8* tab =
&pb->private_impl
.planes[WUFFS_BASE__PIXEL_FORMAT__INDEXED__COLOR_PLANE];
if ((tab->width ==
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) &&
(tab->height == 1)) {
return wuffs_base__make_slice_u8(
tab->ptr, WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH);
}
}
return wuffs_base__make_slice_u8(NULL, 0);
}
static inline wuffs_base__slice_u8 //
wuffs_base__pixel_buffer__palette_or_else(wuffs_base__pixel_buffer* pb,
wuffs_base__slice_u8 fallback) {
if (pb &&
wuffs_base__pixel_format__is_indexed(&pb->pixcfg.private_impl.pixfmt)) {
wuffs_base__table_u8* tab =
&pb->private_impl
.planes[WUFFS_BASE__PIXEL_FORMAT__INDEXED__COLOR_PLANE];
if ((tab->width ==
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) &&
(tab->height == 1)) {
return wuffs_base__make_slice_u8(
tab->ptr, WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH);
}
}
return fallback;
}
static inline wuffs_base__pixel_format //
wuffs_base__pixel_buffer__pixel_format(const wuffs_base__pixel_buffer* pb) {
if (pb) {
return pb->pixcfg.private_impl.pixfmt;
}
return wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__INVALID);
}
static inline wuffs_base__table_u8 //
wuffs_base__pixel_buffer__plane(wuffs_base__pixel_buffer* pb, uint32_t p) {
if (pb && (p < WUFFS_BASE__PIXEL_FORMAT__NUM_PLANES_MAX)) {
return pb->private_impl.planes[p];
}
wuffs_base__table_u8 ret;
ret.ptr = NULL;
ret.width = 0;
ret.height = 0;
ret.stride = 0;
return ret;
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__color_u32_argb_premul //
wuffs_base__pixel_buffer__color_u32_at(const wuffs_base__pixel_buffer* pb,
uint32_t x,
uint32_t y);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status //
wuffs_base__pixel_buffer__set_color_u32_at(
wuffs_base__pixel_buffer* pb,
uint32_t x,
uint32_t y,
wuffs_base__color_u32_argb_premul color);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status //
wuffs_base__pixel_buffer__set_color_u32_fill_rect(
wuffs_base__pixel_buffer* pb,
wuffs_base__rect_ie_u32 rect,
wuffs_base__color_u32_argb_premul color);
#ifdef __cplusplus
inline wuffs_base__status //
wuffs_base__pixel_buffer::set_interleaved(
const wuffs_base__pixel_config* pixcfg_arg,
wuffs_base__table_u8 primary_memory,
wuffs_base__slice_u8 palette_memory) {
return wuffs_base__pixel_buffer__set_interleaved(
this, pixcfg_arg, primary_memory, palette_memory);
}
inline wuffs_base__status //
wuffs_base__pixel_buffer::set_from_slice(
const wuffs_base__pixel_config* pixcfg_arg,
wuffs_base__slice_u8 pixbuf_memory) {
return wuffs_base__pixel_buffer__set_from_slice(this, pixcfg_arg,
pixbuf_memory);
}
inline wuffs_base__status //
wuffs_base__pixel_buffer::set_from_table(
const wuffs_base__pixel_config* pixcfg_arg,
wuffs_base__table_u8 primary_memory) {
return wuffs_base__pixel_buffer__set_from_table(this, pixcfg_arg,
primary_memory);
}
inline wuffs_base__slice_u8 //
wuffs_base__pixel_buffer::palette() {
return wuffs_base__pixel_buffer__palette(this);
}
inline wuffs_base__slice_u8 //
wuffs_base__pixel_buffer::palette_or_else(wuffs_base__slice_u8 fallback) {
return wuffs_base__pixel_buffer__palette_or_else(this, fallback);
}
inline wuffs_base__pixel_format //
wuffs_base__pixel_buffer::pixel_format() const {
return wuffs_base__pixel_buffer__pixel_format(this);
}
inline wuffs_base__table_u8 //
wuffs_base__pixel_buffer::plane(uint32_t p) {
return wuffs_base__pixel_buffer__plane(this, p);
}
inline wuffs_base__color_u32_argb_premul //
wuffs_base__pixel_buffer::color_u32_at(uint32_t x, uint32_t y) const {
return wuffs_base__pixel_buffer__color_u32_at(this, x, y);
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__status //
wuffs_base__pixel_buffer__set_color_u32_fill_rect(
wuffs_base__pixel_buffer* pb,
wuffs_base__rect_ie_u32 rect,
wuffs_base__color_u32_argb_premul color);
inline wuffs_base__status //
wuffs_base__pixel_buffer::set_color_u32_at(
uint32_t x,
uint32_t y,
wuffs_base__color_u32_argb_premul color) {
return wuffs_base__pixel_buffer__set_color_u32_at(this, x, y, color);
}
inline wuffs_base__status //
wuffs_base__pixel_buffer::set_color_u32_fill_rect(
wuffs_base__rect_ie_u32 rect,
wuffs_base__color_u32_argb_premul color) {
return wuffs_base__pixel_buffer__set_color_u32_fill_rect(this, rect, color);
}
#endif // __cplusplus
// --------
typedef struct wuffs_base__decode_frame_options__struct {
// Do not access the private_impl's fields directly. There is no API/ABI
// compatibility or safety guarantee if you do so.
struct {
uint8_t TODO;
} private_impl;
#ifdef __cplusplus
#endif // __cplusplus
} wuffs_base__decode_frame_options;
#ifdef __cplusplus
#endif // __cplusplus
// --------
// wuffs_base__pixel_palette__closest_element returns the index of the palette
// element that minimizes the sum of squared differences of the four ARGB
// channels, working in premultiplied alpha. Ties favor the smaller index.
//
// The palette_slice.len may equal (N*4), for N less than 256, which means that
// only the first N palette elements are considered. It returns 0 when N is 0.
//
// Applying this function on a per-pixel basis will not produce whole-of-image
// dithering.
WUFFS_BASE__MAYBE_STATIC uint8_t //
wuffs_base__pixel_palette__closest_element(
wuffs_base__slice_u8 palette_slice,
wuffs_base__pixel_format palette_format,
wuffs_base__color_u32_argb_premul c);
// --------
// TODO: should the func type take restrict pointers?
typedef uint64_t (*wuffs_base__pixel_swizzler__func)(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len);
typedef uint64_t (*wuffs_base__pixel_swizzler__transparent_black_func)(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
uint64_t num_pixels,
uint32_t dst_pixfmt_bytes_per_pixel);
typedef struct wuffs_base__pixel_swizzler__struct {
// Do not access the private_impl's fields directly. There is no API/ABI
// compatibility or safety guarantee if you do so.
struct {
wuffs_base__pixel_swizzler__func func;
wuffs_base__pixel_swizzler__transparent_black_func transparent_black_func;
uint32_t dst_pixfmt_bytes_per_pixel;
uint32_t src_pixfmt_bytes_per_pixel;
} private_impl;
#ifdef __cplusplus
inline wuffs_base__status prepare(wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__pixel_format src_pixfmt,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend);
inline uint64_t swizzle_interleaved_from_slice(
wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src) const;
#endif // __cplusplus
} wuffs_base__pixel_swizzler;
// wuffs_base__pixel_swizzler__prepare readies the pixel swizzler so that its
// other methods may be called.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__PIXCONV sub-module, not
// just WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC wuffs_base__status //
wuffs_base__pixel_swizzler__prepare(wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__pixel_format src_pixfmt,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend);
// wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice converts pixels
// from a source format to a destination format.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__PIXCONV sub-module, not
// just WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC uint64_t //
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(
const wuffs_base__pixel_swizzler* p,
wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src);
#ifdef __cplusplus
inline wuffs_base__status //
wuffs_base__pixel_swizzler::prepare(wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__pixel_format src_pixfmt,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
return wuffs_base__pixel_swizzler__prepare(this, dst_pixfmt, dst_palette,
src_pixfmt, src_palette, blend);
}
uint64_t //
wuffs_base__pixel_swizzler::swizzle_interleaved_from_slice(
wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src) const {
return wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(
this, dst, dst_palette, src);
}
#endif // __cplusplus
// ---------------- String Conversions
// Options (bitwise or'ed together) for wuffs_base__parse_number_xxx
// functions. The XXX options apply to both integer and floating point. The FXX
// options apply only to floating point.
#define WUFFS_BASE__PARSE_NUMBER_XXX__DEFAULT_OPTIONS ((uint32_t)0x00000000)
// WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES means to accept
// inputs like "00", "0644" and "00.7". By default, they are rejected.
#define WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES \
((uint32_t)0x00000001)
// WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES means to accept inputs like
// "1__2" and "_3.141_592". By default, they are rejected.
#define WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES ((uint32_t)0x00000002)
// WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA means to accept
// "1,5" and not "1.5" as one-and-a-half.
//
// If the caller wants to accept either, it is responsible for canonicalizing
// the input before calling wuffs_base__parse_number_fxx. The caller also has
// more context on e.g. exactly how to treat something like "$1,234".
#define WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA \
((uint32_t)0x00000010)
// WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN means to reject inputs that
// would lead to infinite or Not-a-Number floating point values. By default,
// they are accepted.
//
// This affects the literal "inf" as input, but also affects inputs like
// "1e999" that would overflow double-precision floating point.
#define WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN ((uint32_t)0x00000020)
// --------
// Options (bitwise or'ed together) for wuffs_base__render_number_xxx
// functions. The XXX options apply to both integer and floating point. The FXX
// options apply only to floating point.
#define WUFFS_BASE__RENDER_NUMBER_XXX__DEFAULT_OPTIONS ((uint32_t)0x00000000)
// WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT means to render to the right side
// (higher indexes) of the destination slice, leaving any untouched bytes on
// the left side (lower indexes). The default is vice versa: rendering on the
// left with slack on the right.
#define WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT ((uint32_t)0x00000100)
// WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN means to render the leading
// "+" for non-negative numbers: "+0" and "+12.3" instead of "0" and "12.3".
#define WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN ((uint32_t)0x00000200)
// WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA means to render
// one-and-a-half as "1,5" instead of "1.5".
#define WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA \
((uint32_t)0x00001000)
// WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ETC means whether to never
// (EXPONENT_ABSENT, equivalent to printf's "%f") or to always
// (EXPONENT_PRESENT, equivalent to printf's "%e") render a floating point
// number as "1.23e+05" instead of "123000".
//
// Having both bits set is the same has having neither bit set, where the
// notation used depends on whether the exponent is sufficiently large: "0.5"
// is preferred over "5e-01" but "5e-09" is preferred over "0.000000005".
#define WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT ((uint32_t)0x00002000)
#define WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT ((uint32_t)0x00004000)
// WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION means to render the
// smallest number of digits so that parsing the resultant string will recover
// the same double-precision floating point number.
//
// For example, double-precision cannot distinguish between 0.3 and
// 0.299999999999999988897769753748434595763683319091796875, so when this bit
// is set, rendering the latter will produce "0.3" but rendering
// 0.3000000000000000444089209850062616169452667236328125 will produce
// "0.30000000000000004".
#define WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION \
((uint32_t)0x00008000)
// ---------------- IEEE 754 Floating Point
// wuffs_base__ieee_754_bit_representation__etc converts between a double
// precision numerical value and its IEEE 754 representations:
// - 16-bit: 1 sign bit, 5 exponent bits, 10 explicit significand bits.
// - 32-bit: 1 sign bit, 8 exponent bits, 23 explicit significand bits.
// - 64-bit: 1 sign bit, 11 exponent bits, 52 explicit significand bits.
//
// For example, it converts between:
// - +1.0 and 0x3C00, 0x3F80_0000 or 0x3FF0_0000_0000_0000.
// - +5.5 and 0x4580, 0x40B0_0000 or 0x4016_0000_0000_0000.
// - -inf and 0xFC00, 0xFF80_0000 or 0xFFF0_0000_0000_0000.
//
// Converting from f64 to shorter formats (f16 or f32, represented in C as
// uint16_t and uint32_t) may be lossy. Such functions have names that look
// like etc_truncate, as converting finite numbers produce equal or smaller
// (closer-to-zero) finite numbers. For example, 1048576.0 is a perfectly valid
// f64 number, but converting it to a f16 (with truncation) produces 65504.0,
// the largest finite f16 number. Truncating a f64-typed value d to f32 does
// not always produce the same result as the C-style cast ((float)d), as
// casting can convert from finite numbers to infinite ones.
//
// Converting infinities or NaNs produces infinities or NaNs and always report
// no loss, even though there a multiple NaN representations so that round-
// tripping a f64-typed NaN may produce a different 64 bits. Nonetheless, the
// etc_truncate functions preserve a NaN's "quiet vs signaling" bit.
//
// See https://en.wikipedia.org/wiki/Double-precision_floating-point_format
typedef struct wuffs_base__lossy_value_u16__struct {
uint16_t value;
bool lossy;
} wuffs_base__lossy_value_u16;
typedef struct wuffs_base__lossy_value_u32__struct {
uint32_t value;
bool lossy;
} wuffs_base__lossy_value_u32;
WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u16 //
wuffs_base__ieee_754_bit_representation__from_f64_to_u16_truncate(double f);
WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u32 //
wuffs_base__ieee_754_bit_representation__from_f64_to_u32_truncate(double f);
static inline uint64_t //
wuffs_base__ieee_754_bit_representation__from_f64_to_u64(double f) {
uint64_t u = 0;
if (sizeof(uint64_t) == sizeof(double)) {
memcpy(&u, &f, sizeof(uint64_t));
}
return u;
}
static inline double //
wuffs_base__ieee_754_bit_representation__from_u16_to_f64(uint16_t u) {
uint64_t v = ((uint64_t)(u & 0x8000)) << 48;
do {
uint64_t exp = (u >> 10) & 0x1F;
uint64_t man = u & 0x3FF;
if (exp == 0x1F) { // Infinity or NaN.
exp = 2047;
} else if (exp != 0) { // Normal.
exp += 1008; // 1008 = 1023 - 15, the difference in biases.
} else if (man != 0) { // Subnormal but non-zero.
uint32_t clz = wuffs_base__count_leading_zeroes_u64(man);
exp = 1062 - clz; // 1062 = 1008 + 64 - 10.
man = 0x3FF & (man << (clz - 53));
} else { // Zero.
break;
}
v |= (exp << 52) | (man << 42);
} while (0);
double f = 0;
if (sizeof(uint64_t) == sizeof(double)) {
memcpy(&f, &v, sizeof(uint64_t));
}
return f;
}
static inline double //
wuffs_base__ieee_754_bit_representation__from_u32_to_f64(uint32_t u) {
float f = 0;
if (sizeof(uint32_t) == sizeof(float)) {
memcpy(&f, &u, sizeof(uint32_t));
}
return (double)f;
}
static inline double //
wuffs_base__ieee_754_bit_representation__from_u64_to_f64(uint64_t u) {
double f = 0;
if (sizeof(uint64_t) == sizeof(double)) {
memcpy(&f, &u, sizeof(uint64_t));
}
return f;
}
// ---------------- Parsing and Rendering Numbers
// wuffs_base__parse_number_f64 parses the floating point number in s. For
// example, if s contains the bytes "1.5" then it will return the double 1.5.
//
// It returns an error if s does not contain a floating point number.
//
// It does not necessarily return an error if the conversion is lossy, e.g. if
// s is "0.3", which double-precision floating point cannot represent exactly.
//
// Similarly, the returned value may be infinite (and no error returned) even
// if s was not "inf", when the input is nominally finite but sufficiently
// larger than DBL_MAX, about 1.8e+308.
//
// It is similar to the C standard library's strtod function, but:
// - Errors are returned in-band (in a result type), not out-of-band (errno).
// - It takes a slice (a pointer and length), not a NUL-terminated C string.
// - It does not take an optional endptr argument. It does not allow a partial
// parse: it returns an error unless all of s is consumed.
// - It does not allow whitespace, leading or otherwise.
// - It does not allow hexadecimal floating point numbers.
// - It is not affected by i18n / l10n settings such as environment variables.
//
// The options argument can change these, but by default, it:
// - Allows "inf", "+Infinity" and "-NAN", case insensitive. Similarly,
// without an explicit opt-out, it would successfully parse "1e999" as
// infinity, even though it overflows double-precision floating point.
// - Rejects underscores. With an explicit opt-in, "_3.141_592" would
// successfully parse as an approximation to ฯ€.
// - Rejects unnecessary leading zeroes: "00", "0644" and "00.7".
// - Uses a dot '1.5' instead of a comma '1,5' for the decimal separator.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__FLOATCONV sub-module, not
// just WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64 //
wuffs_base__parse_number_f64(wuffs_base__slice_u8 s, uint32_t options);
// wuffs_base__parse_number_i64 parses the ASCII integer in s. For example, if
// s contains the bytes "-123" then it will return the int64_t -123.
//
// It returns an error if s does not contain an integer or if the integer
// within would overflow an int64_t.
//
// It is similar to wuffs_base__parse_number_u64 but it returns a signed
// integer, not an unsigned integer. It also allows a leading '+' or '-'.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not
// just WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC wuffs_base__result_i64 //
wuffs_base__parse_number_i64(wuffs_base__slice_u8 s, uint32_t options);
// wuffs_base__parse_number_u64 parses the ASCII integer in s. For example, if
// s contains the bytes "123" then it will return the uint64_t 123.
//
// It returns an error if s does not contain an integer or if the integer
// within would overflow a uint64_t.
//
// It is similar to the C standard library's strtoull function, but:
// - Errors are returned in-band (in a result type), not out-of-band (errno).
// - It takes a slice (a pointer and length), not a NUL-terminated C string.
// - It does not take an optional endptr argument. It does not allow a partial
// parse: it returns an error unless all of s is consumed.
// - It does not allow whitespace, leading or otherwise.
// - It does not allow a leading '+' or '-'.
// - It does not take a base argument (e.g. base 10 vs base 16). Instead, it
// always accepts both decimal (e.g "1234", "0d5678") and hexadecimal (e.g.
// "0x9aBC"). The caller is responsible for prior filtering of e.g. hex
// numbers if they are unwanted. For example, Wuffs' JSON decoder will only
// produce a wuffs_base__token for decimal numbers, not hexadecimal.
// - It is not affected by i18n / l10n settings such as environment variables.
//
// The options argument can change these, but by default, it:
// - Rejects underscores. With an explicit opt-in, "__0D_1_002" would
// successfully parse as "one thousand and two". Underscores are still
// rejected inside the optional 2-byte opening "0d" or "0X" that denotes
// base-10 or base-16.
// - Rejects unnecessary leading zeroes: "00" and "0644".
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not
// just WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC wuffs_base__result_u64 //
wuffs_base__parse_number_u64(wuffs_base__slice_u8 s, uint32_t options);
// --------
// WUFFS_BASE__I64__BYTE_LENGTH__MAX_INCL is the string length of
// "-9223372036854775808" and "+9223372036854775807", INT64_MIN and INT64_MAX.
#define WUFFS_BASE__I64__BYTE_LENGTH__MAX_INCL 20
// WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL is the string length of
// "+18446744073709551615", UINT64_MAX.
#define WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL 21
// wuffs_base__render_number_f64 writes the decimal encoding of x to dst and
// returns the number of bytes written. If dst is shorter than the entire
// encoding, it returns 0 (and no bytes are written).
//
// For those familiar with C's printf or Go's fmt.Printf functions:
// - "%e" means the WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT option.
// - "%f" means the WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT option.
// - "%g" means neither or both bits are set.
//
// The precision argument controls the number of digits rendered, excluding the
// exponent (the "e+05" in "1.23e+05"):
// - for "%e" and "%f" it is the number of digits after the decimal separator,
// - for "%g" it is the number of significant digits (and trailing zeroes are
// removed).
//
// A precision of 6 gives similar output to printf's defaults.
//
// A precision greater than 4095 is equivalent to 4095.
//
// The precision argument is ignored when the
// WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION option is set. This is
// similar to Go's strconv.FormatFloat with a negative (i.e. non-sensical)
// precision, but there is no corresponding feature in C's printf.
//
// Extreme values of x will be rendered as "NaN", "Inf" (or "+Inf" if the
// WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN option is set) or "-Inf".
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__FLOATCONV sub-module, not
// just WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC size_t //
wuffs_base__render_number_f64(wuffs_base__slice_u8 dst,
double x,
uint32_t precision,
uint32_t options);
// wuffs_base__render_number_i64 writes the decimal encoding of x to dst and
// returns the number of bytes written. If dst is shorter than the entire
// encoding, it returns 0 (and no bytes are written).
//
// dst will never be too short if its length is at least 20, also known as
// WUFFS_BASE__I64__BYTE_LENGTH__MAX_INCL.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not
// just WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC size_t //
wuffs_base__render_number_i64(wuffs_base__slice_u8 dst,
int64_t x,
uint32_t options);
// wuffs_base__render_number_u64 writes the decimal encoding of x to dst and
// returns the number of bytes written. If dst is shorter than the entire
// encoding, it returns 0 (and no bytes are written).
//
// dst will never be too short if its length is at least 21, also known as
// WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not
// just WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC size_t //
wuffs_base__render_number_u64(wuffs_base__slice_u8 dst,
uint64_t x,
uint32_t options);
// ---------------- Base-16
// Options (bitwise or'ed together) for wuffs_base__base_16__xxx functions.
#define WUFFS_BASE__BASE_16__DEFAULT_OPTIONS ((uint32_t)0x00000000)
// wuffs_base__base_16__decode2 converts "6A6b" to "jk", where e.g. 'j' is
// U+006A. There are 2 src bytes for every dst byte.
//
// It assumes that the src bytes are two hexadecimal digits (0-9, A-F, a-f),
// repeated. It may write nonsense bytes if not, although it will not read or
// write out of bounds.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not
// just WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output //
wuffs_base__base_16__decode2(wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 src,
bool src_closed,
uint32_t options);
// wuffs_base__base_16__decode4 converts both "\\x6A\\x6b" and "??6a??6B" to
// "jk", where e.g. 'j' is U+006A. There are 4 src bytes for every dst byte.
//
// It assumes that the src bytes are two ignored bytes and then two hexadecimal
// digits (0-9, A-F, a-f), repeated. It may write nonsense bytes if not,
// although it will not read or write out of bounds.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not
// just WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output //
wuffs_base__base_16__decode4(wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 src,
bool src_closed,
uint32_t options);
// wuffs_base__base_16__encode2 converts "jk" to "6A6B", where e.g. 'j' is
// U+006A. There are 2 dst bytes for every src byte.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not
// just WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output //
wuffs_base__base_16__encode2(wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 src,
bool src_closed,
uint32_t options);
// wuffs_base__base_16__encode4 converts "jk" to "\\x6A\\x6B", where e.g. 'j'
// is U+006A. There are 4 dst bytes for every src byte.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not
// just WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output //
wuffs_base__base_16__encode2(wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 src,
bool src_closed,
uint32_t options);
// ---------------- Base-64
// Options (bitwise or'ed together) for wuffs_base__base_64__xxx functions.
#define WUFFS_BASE__BASE_64__DEFAULT_OPTIONS ((uint32_t)0x00000000)
// WUFFS_BASE__BASE_64__DECODE_ALLOW_PADDING means that, when decoding base-64,
// the input may (but does not need to) be padded with '=' bytes so that the
// overall encoded length in bytes is a multiple of 4. A successful decoding
// will return a num_src that includes those padding bytes.
//
// Excess padding (e.g. three final '='s) will be rejected as bad data.
#define WUFFS_BASE__BASE_64__DECODE_ALLOW_PADDING ((uint32_t)0x00000001)
// WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING means that, when encoding base-64,
// the output will be padded with '=' bytes so that the overall encoded length
// in bytes is a multiple of 4.
#define WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING ((uint32_t)0x00000002)
// WUFFS_BASE__BASE_64__URL_ALPHABET means that, for base-64, the URL-friendly
// and file-name-friendly alphabet be used, as per RFC 4648 section 5. When
// this option bit is off, the standard alphabet from section 4 is used.
#define WUFFS_BASE__BASE_64__URL_ALPHABET ((uint32_t)0x00000100)
// wuffs_base__base_64__decode transforms base-64 encoded bytes from src to
// arbitrary bytes in dst.
//
// It will not permit line breaks or other whitespace in src. Filtering those
// out is the responsibility of the caller.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not
// just WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output //
wuffs_base__base_64__decode(wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 src,
bool src_closed,
uint32_t options);
// wuffs_base__base_64__encode transforms arbitrary bytes from src to base-64
// encoded bytes in dst.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not
// just WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output //
wuffs_base__base_64__encode(wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 src,
bool src_closed,
uint32_t options);
// ---------------- Unicode and UTF-8
#define WUFFS_BASE__UNICODE_CODE_POINT__MIN_INCL 0x00000000
#define WUFFS_BASE__UNICODE_CODE_POINT__MAX_INCL 0x0010FFFF
#define WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER 0x0000FFFD
#define WUFFS_BASE__UNICODE_SURROGATE__MIN_INCL 0x0000D800
#define WUFFS_BASE__UNICODE_SURROGATE__MAX_INCL 0x0000DFFF
#define WUFFS_BASE__ASCII__MIN_INCL 0x00
#define WUFFS_BASE__ASCII__MAX_INCL 0x7F
#define WUFFS_BASE__UTF_8__BYTE_LENGTH__MIN_INCL 1
#define WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL 4
#define WUFFS_BASE__UTF_8__BYTE_LENGTH_1__CODE_POINT__MIN_INCL 0x00000000
#define WUFFS_BASE__UTF_8__BYTE_LENGTH_1__CODE_POINT__MAX_INCL 0x0000007F
#define WUFFS_BASE__UTF_8__BYTE_LENGTH_2__CODE_POINT__MIN_INCL 0x00000080
#define WUFFS_BASE__UTF_8__BYTE_LENGTH_2__CODE_POINT__MAX_INCL 0x000007FF
#define WUFFS_BASE__UTF_8__BYTE_LENGTH_3__CODE_POINT__MIN_INCL 0x00000800
#define WUFFS_BASE__UTF_8__BYTE_LENGTH_3__CODE_POINT__MAX_INCL 0x0000FFFF
#define WUFFS_BASE__UTF_8__BYTE_LENGTH_4__CODE_POINT__MIN_INCL 0x00010000
#define WUFFS_BASE__UTF_8__BYTE_LENGTH_4__CODE_POINT__MAX_INCL 0x0010FFFF
// --------
// wuffs_base__utf_8__next__output is the type returned by
// wuffs_base__utf_8__next.
typedef struct wuffs_base__utf_8__next__output__struct {
uint32_t code_point;
uint32_t byte_length;
#ifdef __cplusplus
inline bool is_valid() const;
#endif // __cplusplus
} wuffs_base__utf_8__next__output;
static inline wuffs_base__utf_8__next__output //
wuffs_base__make_utf_8__next__output(uint32_t code_point,
uint32_t byte_length) {
wuffs_base__utf_8__next__output ret;
ret.code_point = code_point;
ret.byte_length = byte_length;
return ret;
}
static inline bool //
wuffs_base__utf_8__next__output__is_valid(
const wuffs_base__utf_8__next__output* o) {
if (o) {
uint32_t cp = o->code_point;
switch (o->byte_length) {
case 1:
return (cp <= 0x7F);
case 2:
return (0x080 <= cp) && (cp <= 0x7FF);
case 3:
// Avoid the 0xD800 ..= 0xDFFF surrogate range.
return ((0x0800 <= cp) && (cp <= 0xD7FF)) ||
((0xE000 <= cp) && (cp <= 0xFFFF));
case 4:
return (0x00010000 <= cp) && (cp <= 0x0010FFFF);
}
}
return false;
}
#ifdef __cplusplus
inline bool //
wuffs_base__utf_8__next__output::is_valid() const {
return wuffs_base__utf_8__next__output__is_valid(this);
}
#endif // __cplusplus
// --------
// wuffs_base__utf_8__encode writes the UTF-8 encoding of code_point to s and
// returns the number of bytes written. If code_point is invalid, or if s is
// shorter than the entire encoding, it returns 0 (and no bytes are written).
//
// s will never be too short if its length is at least 4, also known as
// WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__UTF8 sub-module, not just
// WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC size_t //
wuffs_base__utf_8__encode(wuffs_base__slice_u8 dst, uint32_t code_point);
// wuffs_base__utf_8__next returns the next UTF-8 code point (and that code
// point's byte length) at the start of the read-only slice (s_ptr, s_len).
//
// There are exactly two cases in which this function returns something where
// wuffs_base__utf_8__next__output__is_valid is false:
// - If s is empty then it returns {.code_point=0, .byte_length=0}.
// - If s is non-empty and starts with invalid UTF-8 then it returns
// {.code_point=WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, .byte_length=1}.
//
// Otherwise, it returns something where
// wuffs_base__utf_8__next__output__is_valid is true.
//
// In any case, it always returns an output that satisfies both of:
// - (output.code_point <= WUFFS_BASE__UNICODE_CODE_POINT__MAX_INCL).
// - (output.byte_length <= s_len).
//
// If s is a sub-slice of a larger slice of valid UTF-8, but that sub-slice
// boundary occurs in the middle of a multi-byte UTF-8 encoding of a single
// code point, then this function may return something invalid. It is the
// caller's responsibility to split on or otherwise manage UTF-8 boundaries.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__UTF8 sub-module, not just
// WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output //
wuffs_base__utf_8__next(const uint8_t* s_ptr, size_t s_len);
// wuffs_base__utf_8__next_from_end is like wuffs_base__utf_8__next except that
// it looks at the end of (s_ptr, s_len) instead of the start.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__UTF8 sub-module, not just
// WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output //
wuffs_base__utf_8__next_from_end(const uint8_t* s_ptr, size_t s_len);
// wuffs_base__utf_8__longest_valid_prefix returns the largest n such that the
// sub-slice s[..n] is valid UTF-8, where s is the read-only slice (s_ptr,
// s_len).
//
// In particular, it returns s_len if and only if all of s is valid UTF-8.
//
// If s is a sub-slice of a larger slice of valid UTF-8, but that sub-slice
// boundary occurs in the middle of a multi-byte UTF-8 encoding of a single
// code point, then this function will return less than s_len. It is the
// caller's responsibility to split on or otherwise manage UTF-8 boundaries.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__UTF8 sub-module, not just
// WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC size_t //
wuffs_base__utf_8__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len);
// wuffs_base__ascii__longest_valid_prefix returns the largest n such that the
// sub-slice s[..n] is valid ASCII, where s is the read-only slice (s_ptr,
// s_len).
//
// In particular, it returns s_len if and only if all of s is valid ASCII.
// Equivalently, when none of the bytes in s have the 0x80 high bit set.
//
// For modular builds that divide the base module into sub-modules, using this
// function requires the WUFFS_CONFIG__MODULE__BASE__UTF8 sub-module, not just
// WUFFS_CONFIG__MODULE__BASE__CORE.
WUFFS_BASE__MAYBE_STATIC size_t //
wuffs_base__ascii__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len);
// ---------------- Interface Declarations.
// For modular builds that divide the base module into sub-modules, using these
// functions require the WUFFS_CONFIG__MODULE__BASE__INTERFACES sub-module, not
// just WUFFS_CONFIG__MODULE__BASE__CORE.
// --------
extern const char wuffs_base__hasher_u32__vtable_name[];
typedef struct wuffs_base__hasher_u32__func_ptrs__struct {
wuffs_base__empty_struct (*set_quirk_enabled)(
void* self,
uint32_t a_quirk,
bool a_enabled);
uint32_t (*update_u32)(
void* self,
wuffs_base__slice_u8 a_x);
} wuffs_base__hasher_u32__func_ptrs;
typedef struct wuffs_base__hasher_u32__struct wuffs_base__hasher_u32;
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_base__hasher_u32__set_quirk_enabled(
wuffs_base__hasher_u32* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_base__hasher_u32__update_u32(
wuffs_base__hasher_u32* self,
wuffs_base__slice_u8 a_x);
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_base__hasher_u32__struct {
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable first_vtable;
} private_impl;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_base__hasher_u32, decltype(&free)>;
#endif
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_base__hasher_u32__set_quirk_enabled(
this, a_quirk, a_enabled);
}
inline uint32_t
update_u32(
wuffs_base__slice_u8 a_x) {
return wuffs_base__hasher_u32__update_u32(
this, a_x);
}
#endif // __cplusplus
}; // struct wuffs_base__hasher_u32__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// --------
extern const char wuffs_base__image_decoder__vtable_name[];
typedef struct wuffs_base__image_decoder__func_ptrs__struct {
wuffs_base__status (*decode_frame)(
void* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts);
wuffs_base__status (*decode_frame_config)(
void* self,
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src);
wuffs_base__status (*decode_image_config)(
void* self,
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src);
wuffs_base__rect_ie_u32 (*frame_dirty_rect)(
const void* self);
uint32_t (*num_animation_loops)(
const void* self);
uint64_t (*num_decoded_frame_configs)(
const void* self);
uint64_t (*num_decoded_frames)(
const void* self);
wuffs_base__status (*restart_frame)(
void* self,
uint64_t a_index,
uint64_t a_io_position);
wuffs_base__empty_struct (*set_quirk_enabled)(
void* self,
uint32_t a_quirk,
bool a_enabled);
wuffs_base__empty_struct (*set_report_metadata)(
void* self,
uint32_t a_fourcc,
bool a_report);
wuffs_base__status (*tell_me_more)(
void* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src);
wuffs_base__range_ii_u64 (*workbuf_len)(
const void* self);
} wuffs_base__image_decoder__func_ptrs;
typedef struct wuffs_base__image_decoder__struct wuffs_base__image_decoder;
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_base__image_decoder__decode_frame(
wuffs_base__image_decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_base__image_decoder__decode_frame_config(
wuffs_base__image_decoder* self,
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_base__image_decoder__decode_image_config(
wuffs_base__image_decoder* self,
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
wuffs_base__image_decoder__frame_dirty_rect(
const wuffs_base__image_decoder* self);
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_base__image_decoder__num_animation_loops(
const wuffs_base__image_decoder* self);
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_base__image_decoder__num_decoded_frame_configs(
const wuffs_base__image_decoder* self);
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_base__image_decoder__num_decoded_frames(
const wuffs_base__image_decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_base__image_decoder__restart_frame(
wuffs_base__image_decoder* self,
uint64_t a_index,
uint64_t a_io_position);
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_base__image_decoder__set_quirk_enabled(
wuffs_base__image_decoder* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_base__image_decoder__set_report_metadata(
wuffs_base__image_decoder* self,
uint32_t a_fourcc,
bool a_report);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_base__image_decoder__tell_me_more(
wuffs_base__image_decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_base__image_decoder__workbuf_len(
const wuffs_base__image_decoder* self);
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_base__image_decoder__struct {
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable first_vtable;
} private_impl;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_base__image_decoder, decltype(&free)>;
#endif
inline wuffs_base__status
decode_frame(
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts) {
return wuffs_base__image_decoder__decode_frame(
this, a_dst, a_src, a_blend, a_workbuf, a_opts);
}
inline wuffs_base__status
decode_frame_config(
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src) {
return wuffs_base__image_decoder__decode_frame_config(
this, a_dst, a_src);
}
inline wuffs_base__status
decode_image_config(
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src) {
return wuffs_base__image_decoder__decode_image_config(
this, a_dst, a_src);
}
inline wuffs_base__rect_ie_u32
frame_dirty_rect() const {
return wuffs_base__image_decoder__frame_dirty_rect(this);
}
inline uint32_t
num_animation_loops() const {
return wuffs_base__image_decoder__num_animation_loops(this);
}
inline uint64_t
num_decoded_frame_configs() const {
return wuffs_base__image_decoder__num_decoded_frame_configs(this);
}
inline uint64_t
num_decoded_frames() const {
return wuffs_base__image_decoder__num_decoded_frames(this);
}
inline wuffs_base__status
restart_frame(
uint64_t a_index,
uint64_t a_io_position) {
return wuffs_base__image_decoder__restart_frame(
this, a_index, a_io_position);
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_base__image_decoder__set_quirk_enabled(
this, a_quirk, a_enabled);
}
inline wuffs_base__empty_struct
set_report_metadata(
uint32_t a_fourcc,
bool a_report) {
return wuffs_base__image_decoder__set_report_metadata(
this, a_fourcc, a_report);
}
inline wuffs_base__status
tell_me_more(
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src) {
return wuffs_base__image_decoder__tell_me_more(
this, a_dst, a_minfo, a_src);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_base__image_decoder__workbuf_len(this);
}
#endif // __cplusplus
}; // struct wuffs_base__image_decoder__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// --------
extern const char wuffs_base__io_transformer__vtable_name[];
typedef struct wuffs_base__io_transformer__func_ptrs__struct {
wuffs_base__empty_struct (*set_quirk_enabled)(
void* self,
uint32_t a_quirk,
bool a_enabled);
wuffs_base__status (*transform_io)(
void* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf);
wuffs_base__range_ii_u64 (*workbuf_len)(
const void* self);
} wuffs_base__io_transformer__func_ptrs;
typedef struct wuffs_base__io_transformer__struct wuffs_base__io_transformer;
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_base__io_transformer__set_quirk_enabled(
wuffs_base__io_transformer* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_base__io_transformer__transform_io(
wuffs_base__io_transformer* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_base__io_transformer__workbuf_len(
const wuffs_base__io_transformer* self);
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_base__io_transformer__struct {
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable first_vtable;
} private_impl;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_base__io_transformer, decltype(&free)>;
#endif
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_base__io_transformer__set_quirk_enabled(
this, a_quirk, a_enabled);
}
inline wuffs_base__status
transform_io(
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
return wuffs_base__io_transformer__transform_io(
this, a_dst, a_src, a_workbuf);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_base__io_transformer__workbuf_len(this);
}
#endif // __cplusplus
}; // struct wuffs_base__io_transformer__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// --------
extern const char wuffs_base__token_decoder__vtable_name[];
typedef struct wuffs_base__token_decoder__func_ptrs__struct {
wuffs_base__status (*decode_tokens)(
void* self,
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf);
wuffs_base__empty_struct (*set_quirk_enabled)(
void* self,
uint32_t a_quirk,
bool a_enabled);
wuffs_base__range_ii_u64 (*workbuf_len)(
const void* self);
} wuffs_base__token_decoder__func_ptrs;
typedef struct wuffs_base__token_decoder__struct wuffs_base__token_decoder;
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_base__token_decoder__decode_tokens(
wuffs_base__token_decoder* self,
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf);
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_base__token_decoder__set_quirk_enabled(
wuffs_base__token_decoder* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_base__token_decoder__workbuf_len(
const wuffs_base__token_decoder* self);
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_base__token_decoder__struct {
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable first_vtable;
} private_impl;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_base__token_decoder, decltype(&free)>;
#endif
inline wuffs_base__status
decode_tokens(
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
return wuffs_base__token_decoder__decode_tokens(
this, a_dst, a_src, a_workbuf);
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_base__token_decoder__set_quirk_enabled(
this, a_quirk, a_enabled);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_base__token_decoder__workbuf_len(this);
}
#endif // __cplusplus
}; // struct wuffs_base__token_decoder__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// ----------------
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Status Codes
// ---------------- Public Consts
// ---------------- Struct Declarations
typedef struct wuffs_adler32__hasher__struct wuffs_adler32__hasher;
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Public Initializer Prototypes
// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
//
// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_adler32__hasher__initialize(
wuffs_adler32__hasher* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options);
size_t
sizeof__wuffs_adler32__hasher();
// ---------------- Allocs
// These functions allocate and initialize Wuffs structs. They return NULL if
// memory allocation fails. If they return non-NULL, there is no need to call
// wuffs_foo__bar__initialize, but the caller is responsible for eventually
// calling free on the returned pointer. That pointer is effectively a C++
// std::unique_ptr<T, decltype(&free)>.
wuffs_adler32__hasher*
wuffs_adler32__hasher__alloc();
static inline wuffs_base__hasher_u32*
wuffs_adler32__hasher__alloc_as__wuffs_base__hasher_u32() {
return (wuffs_base__hasher_u32*)(wuffs_adler32__hasher__alloc());
}
// ---------------- Upcasts
static inline wuffs_base__hasher_u32*
wuffs_adler32__hasher__upcast_as__wuffs_base__hasher_u32(
wuffs_adler32__hasher* p) {
return (wuffs_base__hasher_u32*)p;
}
// ---------------- Public Function Prototypes
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_adler32__hasher__set_quirk_enabled(
wuffs_adler32__hasher* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_adler32__hasher__update_u32(
wuffs_adler32__hasher* self,
wuffs_base__slice_u8 a_x);
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Struct Definitions
// These structs' fields, and the sizeof them, are private implementation
// details that aren't guaranteed to be stable across Wuffs versions.
//
// See https://en.wikipedia.org/wiki/Opaque_pointer#C
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_adler32__hasher__struct {
// Do not access the private_impl's or private_data's fields directly. There
// is no API/ABI compatibility or safety guarantee if you do so. Instead, use
// the wuffs_foo__bar__baz functions.
//
// It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
// can be stack allocated when WUFFS_IMPLEMENTATION is defined.
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable vtable_for__wuffs_base__hasher_u32;
wuffs_base__vtable null_vtable;
uint32_t f_state;
bool f_started;
wuffs_base__empty_struct (*choosy_up)(
wuffs_adler32__hasher* self,
wuffs_base__slice_u8 a_x);
} private_impl;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_adler32__hasher, decltype(&free)>;
// On failure, the alloc_etc functions return nullptr. They don't throw.
static inline unique_ptr
alloc() {
return unique_ptr(wuffs_adler32__hasher__alloc(), &free);
}
static inline wuffs_base__hasher_u32::unique_ptr
alloc_as__wuffs_base__hasher_u32() {
return wuffs_base__hasher_u32::unique_ptr(
wuffs_adler32__hasher__alloc_as__wuffs_base__hasher_u32(), &free);
}
#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
// Disallow constructing or copying an object via standard C++ mechanisms,
// e.g. the "new" operator, as this struct is intentionally opaque. Its total
// size and field layout is not part of the public, stable, memory-safe API.
// Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
// call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
// their first argument) rather than tweaking bar.private_impl.qux fields.
//
// In C, we can just leave wuffs_foo__bar as an incomplete type (unless
// WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
// order to provide convenience methods. These forward on "this", so that you
// can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
wuffs_adler32__hasher__struct() = delete;
wuffs_adler32__hasher__struct(const wuffs_adler32__hasher__struct&) = delete;
wuffs_adler32__hasher__struct& operator=(
const wuffs_adler32__hasher__struct&) = delete;
#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
#if !defined(WUFFS_IMPLEMENTATION)
// As above, the size of the struct is not part of the public API, and unless
// WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
// allocated, not stack allocated. Its size is not intended to be known at
// compile time, but it is unfortunately divulged as a side effect of
// defining C++ convenience methods. Use "sizeof__T()", calling the function,
// instead of "sizeof T", invoking the operator. To make the two values
// different, so that passing the latter will be rejected by the initialize
// function, we add an arbitrary amount of dead weight.
uint8_t dead_weight[123000000]; // 123 MB.
#endif // !defined(WUFFS_IMPLEMENTATION)
inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
initialize(
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options) {
return wuffs_adler32__hasher__initialize(
this, sizeof_star_self, wuffs_version, options);
}
inline wuffs_base__hasher_u32*
upcast_as__wuffs_base__hasher_u32() {
return (wuffs_base__hasher_u32*)this;
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_adler32__hasher__set_quirk_enabled(this, a_quirk, a_enabled);
}
inline uint32_t
update_u32(
wuffs_base__slice_u8 a_x) {
return wuffs_adler32__hasher__update_u32(this, a_x);
}
#endif // __cplusplus
}; // struct wuffs_adler32__hasher__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// ---------------- Status Codes
extern const char wuffs_bmp__error__bad_header[];
extern const char wuffs_bmp__error__bad_rle_compression[];
extern const char wuffs_bmp__error__unsupported_bmp_file[];
// ---------------- Public Consts
#define WUFFS_BMP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
// ---------------- Struct Declarations
typedef struct wuffs_bmp__decoder__struct wuffs_bmp__decoder;
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Public Initializer Prototypes
// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
//
// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_bmp__decoder__initialize(
wuffs_bmp__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options);
size_t
sizeof__wuffs_bmp__decoder();
// ---------------- Allocs
// These functions allocate and initialize Wuffs structs. They return NULL if
// memory allocation fails. If they return non-NULL, there is no need to call
// wuffs_foo__bar__initialize, but the caller is responsible for eventually
// calling free on the returned pointer. That pointer is effectively a C++
// std::unique_ptr<T, decltype(&free)>.
wuffs_bmp__decoder*
wuffs_bmp__decoder__alloc();
static inline wuffs_base__image_decoder*
wuffs_bmp__decoder__alloc_as__wuffs_base__image_decoder() {
return (wuffs_base__image_decoder*)(wuffs_bmp__decoder__alloc());
}
// ---------------- Upcasts
static inline wuffs_base__image_decoder*
wuffs_bmp__decoder__upcast_as__wuffs_base__image_decoder(
wuffs_bmp__decoder* p) {
return (wuffs_base__image_decoder*)p;
}
// ---------------- Public Function Prototypes
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_bmp__decoder__set_quirk_enabled(
wuffs_bmp__decoder* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_bmp__decoder__decode_image_config(
wuffs_bmp__decoder* self,
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_bmp__decoder__decode_frame_config(
wuffs_bmp__decoder* self,
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_bmp__decoder__decode_frame(
wuffs_bmp__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts);
WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
wuffs_bmp__decoder__frame_dirty_rect(
const wuffs_bmp__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_bmp__decoder__num_animation_loops(
const wuffs_bmp__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_bmp__decoder__num_decoded_frame_configs(
const wuffs_bmp__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_bmp__decoder__num_decoded_frames(
const wuffs_bmp__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_bmp__decoder__restart_frame(
wuffs_bmp__decoder* self,
uint64_t a_index,
uint64_t a_io_position);
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_bmp__decoder__set_report_metadata(
wuffs_bmp__decoder* self,
uint32_t a_fourcc,
bool a_report);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_bmp__decoder__tell_me_more(
wuffs_bmp__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_bmp__decoder__workbuf_len(
const wuffs_bmp__decoder* self);
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Struct Definitions
// These structs' fields, and the sizeof them, are private implementation
// details that aren't guaranteed to be stable across Wuffs versions.
//
// See https://en.wikipedia.org/wiki/Opaque_pointer#C
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_bmp__decoder__struct {
// Do not access the private_impl's or private_data's fields directly. There
// is no API/ABI compatibility or safety guarantee if you do so. Instead, use
// the wuffs_foo__bar__baz functions.
//
// It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
// can be stack allocated when WUFFS_IMPLEMENTATION is defined.
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
wuffs_base__vtable null_vtable;
uint32_t f_width;
uint32_t f_height;
uint8_t f_call_sequence;
bool f_top_down;
uint32_t f_pad_per_row;
uint32_t f_src_pixfmt;
uint32_t f_io_redirect_fourcc;
uint64_t f_io_redirect_pos;
uint64_t f_frame_config_io_position;
uint32_t f_bitmap_info_len;
uint32_t f_padding;
uint32_t f_bits_per_pixel;
uint32_t f_compression;
uint32_t f_channel_masks[4];
uint8_t f_channel_shifts[4];
uint8_t f_channel_num_bits[4];
uint32_t f_dst_x;
uint32_t f_dst_y;
uint32_t f_dst_y_inc;
uint32_t f_pending_pad;
uint32_t f_rle_state;
uint32_t f_rle_length;
uint8_t f_rle_delta_x;
bool f_rle_padded;
wuffs_base__pixel_swizzler f_swizzler;
uint32_t p_decode_image_config[1];
uint32_t p_decode_frame_config[1];
uint32_t p_decode_frame[1];
uint32_t p_read_palette[1];
} private_impl;
struct {
uint8_t f_scratch[2048];
uint8_t f_src_palette[1024];
struct {
uint64_t scratch;
} s_decode_image_config[1];
struct {
uint64_t scratch;
} s_decode_frame[1];
struct {
uint32_t v_i;
uint64_t scratch;
} s_read_palette[1];
} private_data;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_bmp__decoder, decltype(&free)>;
// On failure, the alloc_etc functions return nullptr. They don't throw.
static inline unique_ptr
alloc() {
return unique_ptr(wuffs_bmp__decoder__alloc(), &free);
}
static inline wuffs_base__image_decoder::unique_ptr
alloc_as__wuffs_base__image_decoder() {
return wuffs_base__image_decoder::unique_ptr(
wuffs_bmp__decoder__alloc_as__wuffs_base__image_decoder(), &free);
}
#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
// Disallow constructing or copying an object via standard C++ mechanisms,
// e.g. the "new" operator, as this struct is intentionally opaque. Its total
// size and field layout is not part of the public, stable, memory-safe API.
// Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
// call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
// their first argument) rather than tweaking bar.private_impl.qux fields.
//
// In C, we can just leave wuffs_foo__bar as an incomplete type (unless
// WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
// order to provide convenience methods. These forward on "this", so that you
// can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
wuffs_bmp__decoder__struct() = delete;
wuffs_bmp__decoder__struct(const wuffs_bmp__decoder__struct&) = delete;
wuffs_bmp__decoder__struct& operator=(
const wuffs_bmp__decoder__struct&) = delete;
#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
#if !defined(WUFFS_IMPLEMENTATION)
// As above, the size of the struct is not part of the public API, and unless
// WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
// allocated, not stack allocated. Its size is not intended to be known at
// compile time, but it is unfortunately divulged as a side effect of
// defining C++ convenience methods. Use "sizeof__T()", calling the function,
// instead of "sizeof T", invoking the operator. To make the two values
// different, so that passing the latter will be rejected by the initialize
// function, we add an arbitrary amount of dead weight.
uint8_t dead_weight[123000000]; // 123 MB.
#endif // !defined(WUFFS_IMPLEMENTATION)
inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
initialize(
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options) {
return wuffs_bmp__decoder__initialize(
this, sizeof_star_self, wuffs_version, options);
}
inline wuffs_base__image_decoder*
upcast_as__wuffs_base__image_decoder() {
return (wuffs_base__image_decoder*)this;
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_bmp__decoder__set_quirk_enabled(this, a_quirk, a_enabled);
}
inline wuffs_base__status
decode_image_config(
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src) {
return wuffs_bmp__decoder__decode_image_config(this, a_dst, a_src);
}
inline wuffs_base__status
decode_frame_config(
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src) {
return wuffs_bmp__decoder__decode_frame_config(this, a_dst, a_src);
}
inline wuffs_base__status
decode_frame(
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts) {
return wuffs_bmp__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
}
inline wuffs_base__rect_ie_u32
frame_dirty_rect() const {
return wuffs_bmp__decoder__frame_dirty_rect(this);
}
inline uint32_t
num_animation_loops() const {
return wuffs_bmp__decoder__num_animation_loops(this);
}
inline uint64_t
num_decoded_frame_configs() const {
return wuffs_bmp__decoder__num_decoded_frame_configs(this);
}
inline uint64_t
num_decoded_frames() const {
return wuffs_bmp__decoder__num_decoded_frames(this);
}
inline wuffs_base__status
restart_frame(
uint64_t a_index,
uint64_t a_io_position) {
return wuffs_bmp__decoder__restart_frame(this, a_index, a_io_position);
}
inline wuffs_base__empty_struct
set_report_metadata(
uint32_t a_fourcc,
bool a_report) {
return wuffs_bmp__decoder__set_report_metadata(this, a_fourcc, a_report);
}
inline wuffs_base__status
tell_me_more(
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src) {
return wuffs_bmp__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_bmp__decoder__workbuf_len(this);
}
#endif // __cplusplus
}; // struct wuffs_bmp__decoder__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// ---------------- Status Codes
extern const char wuffs_bzip2__error__bad_huffman_code_over_subscribed[];
extern const char wuffs_bzip2__error__bad_huffman_code_under_subscribed[];
extern const char wuffs_bzip2__error__bad_block_header[];
extern const char wuffs_bzip2__error__bad_block_length[];
extern const char wuffs_bzip2__error__bad_checksum[];
extern const char wuffs_bzip2__error__bad_header[];
extern const char wuffs_bzip2__error__bad_number_of_sections[];
extern const char wuffs_bzip2__error__unsupported_block_randomization[];
// ---------------- Public Consts
#define WUFFS_BZIP2__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
// ---------------- Struct Declarations
typedef struct wuffs_bzip2__decoder__struct wuffs_bzip2__decoder;
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Public Initializer Prototypes
// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
//
// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_bzip2__decoder__initialize(
wuffs_bzip2__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options);
size_t
sizeof__wuffs_bzip2__decoder();
// ---------------- Allocs
// These functions allocate and initialize Wuffs structs. They return NULL if
// memory allocation fails. If they return non-NULL, there is no need to call
// wuffs_foo__bar__initialize, but the caller is responsible for eventually
// calling free on the returned pointer. That pointer is effectively a C++
// std::unique_ptr<T, decltype(&free)>.
wuffs_bzip2__decoder*
wuffs_bzip2__decoder__alloc();
static inline wuffs_base__io_transformer*
wuffs_bzip2__decoder__alloc_as__wuffs_base__io_transformer() {
return (wuffs_base__io_transformer*)(wuffs_bzip2__decoder__alloc());
}
// ---------------- Upcasts
static inline wuffs_base__io_transformer*
wuffs_bzip2__decoder__upcast_as__wuffs_base__io_transformer(
wuffs_bzip2__decoder* p) {
return (wuffs_base__io_transformer*)p;
}
// ---------------- Public Function Prototypes
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_bzip2__decoder__set_quirk_enabled(
wuffs_bzip2__decoder* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_bzip2__decoder__workbuf_len(
const wuffs_bzip2__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_bzip2__decoder__transform_io(
wuffs_bzip2__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf);
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Struct Definitions
// These structs' fields, and the sizeof them, are private implementation
// details that aren't guaranteed to be stable across Wuffs versions.
//
// See https://en.wikipedia.org/wiki/Opaque_pointer#C
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_bzip2__decoder__struct {
// Do not access the private_impl's or private_data's fields directly. There
// is no API/ABI compatibility or safety guarantee if you do so. Instead, use
// the wuffs_foo__bar__baz functions.
//
// It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
// can be stack allocated when WUFFS_IMPLEMENTATION is defined.
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
wuffs_base__vtable null_vtable;
uint32_t f_bits;
uint32_t f_n_bits;
uint32_t f_max_incl_block_size;
uint32_t f_block_size;
bool f_decode_huffman_finished;
uint8_t f_decode_huffman_which;
uint32_t f_decode_huffman_ticks;
uint32_t f_decode_huffman_section;
uint32_t f_decode_huffman_run_shift;
uint32_t f_flush_pointer;
uint32_t f_flush_repeat_count;
uint8_t f_flush_prev;
bool f_ignore_checksum;
uint32_t f_final_checksum_have;
uint32_t f_block_checksum_have;
uint32_t f_block_checksum_want;
uint32_t f_original_pointer;
uint32_t f_num_symbols;
uint32_t f_num_huffman_codes;
uint32_t f_num_sections;
uint32_t f_code_lengths_bitmask;
uint32_t p_transform_io[1];
uint32_t p_prepare_block[1];
uint32_t p_read_code_lengths[1];
uint32_t p_flush_slow[1];
uint32_t p_decode_huffman_slow[1];
} private_impl;
struct {
uint32_t f_scratch;
uint32_t f_letter_counts[256];
uint8_t f_presence[256];
uint8_t f_mtft[256];
uint8_t f_huffman_selectors[32768];
uint16_t f_huffman_trees[6][257][2];
uint16_t f_huffman_tables[6][256];
uint32_t f_bwt[1048576];
struct {
uint32_t v_i;
uint64_t v_tag;
uint32_t v_final_checksum_want;
} s_transform_io[1];
struct {
uint32_t v_i;
uint32_t v_selector;
} s_prepare_block[1];
struct {
uint32_t v_i;
uint32_t v_code_length;
} s_read_code_lengths[1];
struct {
uint32_t v_flush_pointer;
uint32_t v_flush_repeat_count;
uint8_t v_flush_prev;
uint32_t v_block_checksum_have;
uint32_t v_block_size;
uint8_t v_curr;
uint64_t scratch;
} s_flush_slow[1];
struct {
uint32_t v_node_index;
} s_decode_huffman_slow[1];
} private_data;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_bzip2__decoder, decltype(&free)>;
// On failure, the alloc_etc functions return nullptr. They don't throw.
static inline unique_ptr
alloc() {
return unique_ptr(wuffs_bzip2__decoder__alloc(), &free);
}
static inline wuffs_base__io_transformer::unique_ptr
alloc_as__wuffs_base__io_transformer() {
return wuffs_base__io_transformer::unique_ptr(
wuffs_bzip2__decoder__alloc_as__wuffs_base__io_transformer(), &free);
}
#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
// Disallow constructing or copying an object via standard C++ mechanisms,
// e.g. the "new" operator, as this struct is intentionally opaque. Its total
// size and field layout is not part of the public, stable, memory-safe API.
// Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
// call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
// their first argument) rather than tweaking bar.private_impl.qux fields.
//
// In C, we can just leave wuffs_foo__bar as an incomplete type (unless
// WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
// order to provide convenience methods. These forward on "this", so that you
// can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
wuffs_bzip2__decoder__struct() = delete;
wuffs_bzip2__decoder__struct(const wuffs_bzip2__decoder__struct&) = delete;
wuffs_bzip2__decoder__struct& operator=(
const wuffs_bzip2__decoder__struct&) = delete;
#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
#if !defined(WUFFS_IMPLEMENTATION)
// As above, the size of the struct is not part of the public API, and unless
// WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
// allocated, not stack allocated. Its size is not intended to be known at
// compile time, but it is unfortunately divulged as a side effect of
// defining C++ convenience methods. Use "sizeof__T()", calling the function,
// instead of "sizeof T", invoking the operator. To make the two values
// different, so that passing the latter will be rejected by the initialize
// function, we add an arbitrary amount of dead weight.
uint8_t dead_weight[123000000]; // 123 MB.
#endif // !defined(WUFFS_IMPLEMENTATION)
inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
initialize(
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options) {
return wuffs_bzip2__decoder__initialize(
this, sizeof_star_self, wuffs_version, options);
}
inline wuffs_base__io_transformer*
upcast_as__wuffs_base__io_transformer() {
return (wuffs_base__io_transformer*)this;
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_bzip2__decoder__set_quirk_enabled(this, a_quirk, a_enabled);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_bzip2__decoder__workbuf_len(this);
}
inline wuffs_base__status
transform_io(
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
return wuffs_bzip2__decoder__transform_io(this, a_dst, a_src, a_workbuf);
}
#endif // __cplusplus
}; // struct wuffs_bzip2__decoder__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// ---------------- Status Codes
extern const char wuffs_cbor__error__bad_input[];
extern const char wuffs_cbor__error__unsupported_recursion_depth[];
// ---------------- Public Consts
#define WUFFS_CBOR__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
#define WUFFS_CBOR__DECODER_DEPTH_MAX_INCL 1024
#define WUFFS_CBOR__DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL 2
#define WUFFS_CBOR__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 9
#define WUFFS_CBOR__TOKEN_VALUE_MAJOR 787997
#define WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK 262143
#define WUFFS_CBOR__TOKEN_VALUE_MINOR__MINUS_1_MINUS_X 16777216
#define WUFFS_CBOR__TOKEN_VALUE_MINOR__SIMPLE_VALUE 8388608
#define WUFFS_CBOR__TOKEN_VALUE_MINOR__TAG 4194304
// ---------------- Struct Declarations
typedef struct wuffs_cbor__decoder__struct wuffs_cbor__decoder;
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Public Initializer Prototypes
// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
//
// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_cbor__decoder__initialize(
wuffs_cbor__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options);
size_t
sizeof__wuffs_cbor__decoder();
// ---------------- Allocs
// These functions allocate and initialize Wuffs structs. They return NULL if
// memory allocation fails. If they return non-NULL, there is no need to call
// wuffs_foo__bar__initialize, but the caller is responsible for eventually
// calling free on the returned pointer. That pointer is effectively a C++
// std::unique_ptr<T, decltype(&free)>.
wuffs_cbor__decoder*
wuffs_cbor__decoder__alloc();
static inline wuffs_base__token_decoder*
wuffs_cbor__decoder__alloc_as__wuffs_base__token_decoder() {
return (wuffs_base__token_decoder*)(wuffs_cbor__decoder__alloc());
}
// ---------------- Upcasts
static inline wuffs_base__token_decoder*
wuffs_cbor__decoder__upcast_as__wuffs_base__token_decoder(
wuffs_cbor__decoder* p) {
return (wuffs_base__token_decoder*)p;
}
// ---------------- Public Function Prototypes
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_cbor__decoder__set_quirk_enabled(
wuffs_cbor__decoder* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_cbor__decoder__workbuf_len(
const wuffs_cbor__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_cbor__decoder__decode_tokens(
wuffs_cbor__decoder* self,
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf);
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Struct Definitions
// These structs' fields, and the sizeof them, are private implementation
// details that aren't guaranteed to be stable across Wuffs versions.
//
// See https://en.wikipedia.org/wiki/Opaque_pointer#C
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_cbor__decoder__struct {
// Do not access the private_impl's or private_data's fields directly. There
// is no API/ABI compatibility or safety guarantee if you do so. Instead, use
// the wuffs_foo__bar__baz functions.
//
// It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
// can be stack allocated when WUFFS_IMPLEMENTATION is defined.
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable vtable_for__wuffs_base__token_decoder;
wuffs_base__vtable null_vtable;
bool f_end_of_data;
uint32_t p_decode_tokens[1];
} private_impl;
struct {
uint32_t f_stack[64];
uint64_t f_container_num_remaining[1024];
struct {
uint64_t v_string_length;
uint32_t v_depth;
bool v_tagged;
uint8_t v_indefinite_string_major_type;
} s_decode_tokens[1];
} private_data;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_cbor__decoder, decltype(&free)>;
// On failure, the alloc_etc functions return nullptr. They don't throw.
static inline unique_ptr
alloc() {
return unique_ptr(wuffs_cbor__decoder__alloc(), &free);
}
static inline wuffs_base__token_decoder::unique_ptr
alloc_as__wuffs_base__token_decoder() {
return wuffs_base__token_decoder::unique_ptr(
wuffs_cbor__decoder__alloc_as__wuffs_base__token_decoder(), &free);
}
#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
// Disallow constructing or copying an object via standard C++ mechanisms,
// e.g. the "new" operator, as this struct is intentionally opaque. Its total
// size and field layout is not part of the public, stable, memory-safe API.
// Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
// call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
// their first argument) rather than tweaking bar.private_impl.qux fields.
//
// In C, we can just leave wuffs_foo__bar as an incomplete type (unless
// WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
// order to provide convenience methods. These forward on "this", so that you
// can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
wuffs_cbor__decoder__struct() = delete;
wuffs_cbor__decoder__struct(const wuffs_cbor__decoder__struct&) = delete;
wuffs_cbor__decoder__struct& operator=(
const wuffs_cbor__decoder__struct&) = delete;
#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
#if !defined(WUFFS_IMPLEMENTATION)
// As above, the size of the struct is not part of the public API, and unless
// WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
// allocated, not stack allocated. Its size is not intended to be known at
// compile time, but it is unfortunately divulged as a side effect of
// defining C++ convenience methods. Use "sizeof__T()", calling the function,
// instead of "sizeof T", invoking the operator. To make the two values
// different, so that passing the latter will be rejected by the initialize
// function, we add an arbitrary amount of dead weight.
uint8_t dead_weight[123000000]; // 123 MB.
#endif // !defined(WUFFS_IMPLEMENTATION)
inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
initialize(
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options) {
return wuffs_cbor__decoder__initialize(
this, sizeof_star_self, wuffs_version, options);
}
inline wuffs_base__token_decoder*
upcast_as__wuffs_base__token_decoder() {
return (wuffs_base__token_decoder*)this;
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_cbor__decoder__set_quirk_enabled(this, a_quirk, a_enabled);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_cbor__decoder__workbuf_len(this);
}
inline wuffs_base__status
decode_tokens(
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
return wuffs_cbor__decoder__decode_tokens(this, a_dst, a_src, a_workbuf);
}
#endif // __cplusplus
}; // struct wuffs_cbor__decoder__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// ---------------- Status Codes
// ---------------- Public Consts
// ---------------- Struct Declarations
typedef struct wuffs_crc32__ieee_hasher__struct wuffs_crc32__ieee_hasher;
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Public Initializer Prototypes
// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
//
// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_crc32__ieee_hasher__initialize(
wuffs_crc32__ieee_hasher* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options);
size_t
sizeof__wuffs_crc32__ieee_hasher();
// ---------------- Allocs
// These functions allocate and initialize Wuffs structs. They return NULL if
// memory allocation fails. If they return non-NULL, there is no need to call
// wuffs_foo__bar__initialize, but the caller is responsible for eventually
// calling free on the returned pointer. That pointer is effectively a C++
// std::unique_ptr<T, decltype(&free)>.
wuffs_crc32__ieee_hasher*
wuffs_crc32__ieee_hasher__alloc();
static inline wuffs_base__hasher_u32*
wuffs_crc32__ieee_hasher__alloc_as__wuffs_base__hasher_u32() {
return (wuffs_base__hasher_u32*)(wuffs_crc32__ieee_hasher__alloc());
}
// ---------------- Upcasts
static inline wuffs_base__hasher_u32*
wuffs_crc32__ieee_hasher__upcast_as__wuffs_base__hasher_u32(
wuffs_crc32__ieee_hasher* p) {
return (wuffs_base__hasher_u32*)p;
}
// ---------------- Public Function Prototypes
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_crc32__ieee_hasher__set_quirk_enabled(
wuffs_crc32__ieee_hasher* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_crc32__ieee_hasher__update_u32(
wuffs_crc32__ieee_hasher* self,
wuffs_base__slice_u8 a_x);
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Struct Definitions
// These structs' fields, and the sizeof them, are private implementation
// details that aren't guaranteed to be stable across Wuffs versions.
//
// See https://en.wikipedia.org/wiki/Opaque_pointer#C
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_crc32__ieee_hasher__struct {
// Do not access the private_impl's or private_data's fields directly. There
// is no API/ABI compatibility or safety guarantee if you do so. Instead, use
// the wuffs_foo__bar__baz functions.
//
// It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
// can be stack allocated when WUFFS_IMPLEMENTATION is defined.
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable vtable_for__wuffs_base__hasher_u32;
wuffs_base__vtable null_vtable;
uint32_t f_state;
wuffs_base__empty_struct (*choosy_up)(
wuffs_crc32__ieee_hasher* self,
wuffs_base__slice_u8 a_x);
} private_impl;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_crc32__ieee_hasher, decltype(&free)>;
// On failure, the alloc_etc functions return nullptr. They don't throw.
static inline unique_ptr
alloc() {
return unique_ptr(wuffs_crc32__ieee_hasher__alloc(), &free);
}
static inline wuffs_base__hasher_u32::unique_ptr
alloc_as__wuffs_base__hasher_u32() {
return wuffs_base__hasher_u32::unique_ptr(
wuffs_crc32__ieee_hasher__alloc_as__wuffs_base__hasher_u32(), &free);
}
#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
// Disallow constructing or copying an object via standard C++ mechanisms,
// e.g. the "new" operator, as this struct is intentionally opaque. Its total
// size and field layout is not part of the public, stable, memory-safe API.
// Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
// call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
// their first argument) rather than tweaking bar.private_impl.qux fields.
//
// In C, we can just leave wuffs_foo__bar as an incomplete type (unless
// WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
// order to provide convenience methods. These forward on "this", so that you
// can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
wuffs_crc32__ieee_hasher__struct() = delete;
wuffs_crc32__ieee_hasher__struct(const wuffs_crc32__ieee_hasher__struct&) = delete;
wuffs_crc32__ieee_hasher__struct& operator=(
const wuffs_crc32__ieee_hasher__struct&) = delete;
#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
#if !defined(WUFFS_IMPLEMENTATION)
// As above, the size of the struct is not part of the public API, and unless
// WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
// allocated, not stack allocated. Its size is not intended to be known at
// compile time, but it is unfortunately divulged as a side effect of
// defining C++ convenience methods. Use "sizeof__T()", calling the function,
// instead of "sizeof T", invoking the operator. To make the two values
// different, so that passing the latter will be rejected by the initialize
// function, we add an arbitrary amount of dead weight.
uint8_t dead_weight[123000000]; // 123 MB.
#endif // !defined(WUFFS_IMPLEMENTATION)
inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
initialize(
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options) {
return wuffs_crc32__ieee_hasher__initialize(
this, sizeof_star_self, wuffs_version, options);
}
inline wuffs_base__hasher_u32*
upcast_as__wuffs_base__hasher_u32() {
return (wuffs_base__hasher_u32*)this;
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_crc32__ieee_hasher__set_quirk_enabled(this, a_quirk, a_enabled);
}
inline uint32_t
update_u32(
wuffs_base__slice_u8 a_x) {
return wuffs_crc32__ieee_hasher__update_u32(this, a_x);
}
#endif // __cplusplus
}; // struct wuffs_crc32__ieee_hasher__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// ---------------- Status Codes
extern const char wuffs_deflate__error__bad_huffman_code_over_subscribed[];
extern const char wuffs_deflate__error__bad_huffman_code_under_subscribed[];
extern const char wuffs_deflate__error__bad_huffman_code_length_count[];
extern const char wuffs_deflate__error__bad_huffman_code_length_repetition[];
extern const char wuffs_deflate__error__bad_huffman_code[];
extern const char wuffs_deflate__error__bad_huffman_minimum_code_length[];
extern const char wuffs_deflate__error__bad_block[];
extern const char wuffs_deflate__error__bad_distance[];
extern const char wuffs_deflate__error__bad_distance_code_count[];
extern const char wuffs_deflate__error__bad_literal_length_code_count[];
extern const char wuffs_deflate__error__inconsistent_stored_block_length[];
extern const char wuffs_deflate__error__missing_end_of_block_code[];
extern const char wuffs_deflate__error__no_huffman_codes[];
// ---------------- Public Consts
#define WUFFS_DEFLATE__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1
// ---------------- Struct Declarations
typedef struct wuffs_deflate__decoder__struct wuffs_deflate__decoder;
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Public Initializer Prototypes
// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
//
// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_deflate__decoder__initialize(
wuffs_deflate__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options);
size_t
sizeof__wuffs_deflate__decoder();
// ---------------- Allocs
// These functions allocate and initialize Wuffs structs. They return NULL if
// memory allocation fails. If they return non-NULL, there is no need to call
// wuffs_foo__bar__initialize, but the caller is responsible for eventually
// calling free on the returned pointer. That pointer is effectively a C++
// std::unique_ptr<T, decltype(&free)>.
wuffs_deflate__decoder*
wuffs_deflate__decoder__alloc();
static inline wuffs_base__io_transformer*
wuffs_deflate__decoder__alloc_as__wuffs_base__io_transformer() {
return (wuffs_base__io_transformer*)(wuffs_deflate__decoder__alloc());
}
// ---------------- Upcasts
static inline wuffs_base__io_transformer*
wuffs_deflate__decoder__upcast_as__wuffs_base__io_transformer(
wuffs_deflate__decoder* p) {
return (wuffs_base__io_transformer*)p;
}
// ---------------- Public Function Prototypes
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_deflate__decoder__add_history(
wuffs_deflate__decoder* self,
wuffs_base__slice_u8 a_hist);
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_deflate__decoder__set_quirk_enabled(
wuffs_deflate__decoder* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_deflate__decoder__workbuf_len(
const wuffs_deflate__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_deflate__decoder__transform_io(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf);
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Struct Definitions
// These structs' fields, and the sizeof them, are private implementation
// details that aren't guaranteed to be stable across Wuffs versions.
//
// See https://en.wikipedia.org/wiki/Opaque_pointer#C
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_deflate__decoder__struct {
// Do not access the private_impl's or private_data's fields directly. There
// is no API/ABI compatibility or safety guarantee if you do so. Instead, use
// the wuffs_foo__bar__baz functions.
//
// It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
// can be stack allocated when WUFFS_IMPLEMENTATION is defined.
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
wuffs_base__vtable null_vtable;
uint32_t f_bits;
uint32_t f_n_bits;
uint64_t f_transformed_history_count;
uint32_t f_history_index;
uint32_t f_n_huffs_bits[2];
bool f_end_of_block;
uint32_t p_transform_io[1];
uint32_t p_decode_blocks[1];
uint32_t p_decode_uncompressed[1];
uint32_t p_init_dynamic_huffman[1];
wuffs_base__status (*choosy_decode_huffman_fast64)(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src);
uint32_t p_decode_huffman_slow[1];
} private_impl;
struct {
uint32_t f_huffs[2][1024];
uint8_t f_history[33025];
uint8_t f_code_lengths[320];
struct {
uint32_t v_final;
} s_decode_blocks[1];
struct {
uint32_t v_length;
uint64_t scratch;
} s_decode_uncompressed[1];
struct {
uint32_t v_bits;
uint32_t v_n_bits;
uint32_t v_n_lit;
uint32_t v_n_dist;
uint32_t v_n_clen;
uint32_t v_i;
uint32_t v_mask;
uint32_t v_n_extra_bits;
uint8_t v_rep_symbol;
uint32_t v_rep_count;
} s_init_dynamic_huffman[1];
struct {
uint32_t v_bits;
uint32_t v_n_bits;
uint32_t v_table_entry_n_bits;
uint32_t v_lmask;
uint32_t v_dmask;
uint32_t v_redir_top;
uint32_t v_redir_mask;
uint32_t v_length;
uint32_t v_dist_minus_1;
uint64_t scratch;
} s_decode_huffman_slow[1];
} private_data;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_deflate__decoder, decltype(&free)>;
// On failure, the alloc_etc functions return nullptr. They don't throw.
static inline unique_ptr
alloc() {
return unique_ptr(wuffs_deflate__decoder__alloc(), &free);
}
static inline wuffs_base__io_transformer::unique_ptr
alloc_as__wuffs_base__io_transformer() {
return wuffs_base__io_transformer::unique_ptr(
wuffs_deflate__decoder__alloc_as__wuffs_base__io_transformer(), &free);
}
#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
// Disallow constructing or copying an object via standard C++ mechanisms,
// e.g. the "new" operator, as this struct is intentionally opaque. Its total
// size and field layout is not part of the public, stable, memory-safe API.
// Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
// call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
// their first argument) rather than tweaking bar.private_impl.qux fields.
//
// In C, we can just leave wuffs_foo__bar as an incomplete type (unless
// WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
// order to provide convenience methods. These forward on "this", so that you
// can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
wuffs_deflate__decoder__struct() = delete;
wuffs_deflate__decoder__struct(const wuffs_deflate__decoder__struct&) = delete;
wuffs_deflate__decoder__struct& operator=(
const wuffs_deflate__decoder__struct&) = delete;
#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
#if !defined(WUFFS_IMPLEMENTATION)
// As above, the size of the struct is not part of the public API, and unless
// WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
// allocated, not stack allocated. Its size is not intended to be known at
// compile time, but it is unfortunately divulged as a side effect of
// defining C++ convenience methods. Use "sizeof__T()", calling the function,
// instead of "sizeof T", invoking the operator. To make the two values
// different, so that passing the latter will be rejected by the initialize
// function, we add an arbitrary amount of dead weight.
uint8_t dead_weight[123000000]; // 123 MB.
#endif // !defined(WUFFS_IMPLEMENTATION)
inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
initialize(
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options) {
return wuffs_deflate__decoder__initialize(
this, sizeof_star_self, wuffs_version, options);
}
inline wuffs_base__io_transformer*
upcast_as__wuffs_base__io_transformer() {
return (wuffs_base__io_transformer*)this;
}
inline wuffs_base__empty_struct
add_history(
wuffs_base__slice_u8 a_hist) {
return wuffs_deflate__decoder__add_history(this, a_hist);
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_deflate__decoder__set_quirk_enabled(this, a_quirk, a_enabled);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_deflate__decoder__workbuf_len(this);
}
inline wuffs_base__status
transform_io(
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
return wuffs_deflate__decoder__transform_io(this, a_dst, a_src, a_workbuf);
}
#endif // __cplusplus
}; // struct wuffs_deflate__decoder__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// ---------------- Status Codes
extern const char wuffs_lzw__error__bad_code[];
// ---------------- Public Consts
#define WUFFS_LZW__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
// ---------------- Struct Declarations
typedef struct wuffs_lzw__decoder__struct wuffs_lzw__decoder;
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Public Initializer Prototypes
// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
//
// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_lzw__decoder__initialize(
wuffs_lzw__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options);
size_t
sizeof__wuffs_lzw__decoder();
// ---------------- Allocs
// These functions allocate and initialize Wuffs structs. They return NULL if
// memory allocation fails. If they return non-NULL, there is no need to call
// wuffs_foo__bar__initialize, but the caller is responsible for eventually
// calling free on the returned pointer. That pointer is effectively a C++
// std::unique_ptr<T, decltype(&free)>.
wuffs_lzw__decoder*
wuffs_lzw__decoder__alloc();
static inline wuffs_base__io_transformer*
wuffs_lzw__decoder__alloc_as__wuffs_base__io_transformer() {
return (wuffs_base__io_transformer*)(wuffs_lzw__decoder__alloc());
}
// ---------------- Upcasts
static inline wuffs_base__io_transformer*
wuffs_lzw__decoder__upcast_as__wuffs_base__io_transformer(
wuffs_lzw__decoder* p) {
return (wuffs_base__io_transformer*)p;
}
// ---------------- Public Function Prototypes
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_lzw__decoder__set_quirk_enabled(
wuffs_lzw__decoder* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_lzw__decoder__set_literal_width(
wuffs_lzw__decoder* self,
uint32_t a_lw);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_lzw__decoder__workbuf_len(
const wuffs_lzw__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_lzw__decoder__transform_io(
wuffs_lzw__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf);
WUFFS_BASE__MAYBE_STATIC wuffs_base__slice_u8
wuffs_lzw__decoder__flush(
wuffs_lzw__decoder* self);
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Struct Definitions
// These structs' fields, and the sizeof them, are private implementation
// details that aren't guaranteed to be stable across Wuffs versions.
//
// See https://en.wikipedia.org/wiki/Opaque_pointer#C
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_lzw__decoder__struct {
// Do not access the private_impl's or private_data's fields directly. There
// is no API/ABI compatibility or safety guarantee if you do so. Instead, use
// the wuffs_foo__bar__baz functions.
//
// It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
// can be stack allocated when WUFFS_IMPLEMENTATION is defined.
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
wuffs_base__vtable null_vtable;
uint32_t f_set_literal_width_arg;
uint32_t f_literal_width;
uint32_t f_clear_code;
uint32_t f_end_code;
uint32_t f_save_code;
uint32_t f_prev_code;
uint32_t f_width;
uint32_t f_bits;
uint32_t f_n_bits;
uint32_t f_output_ri;
uint32_t f_output_wi;
uint32_t f_read_from_return_value;
uint16_t f_prefixes[4096];
uint32_t p_transform_io[1];
uint32_t p_write_to[1];
} private_impl;
struct {
uint8_t f_suffixes[4096][8];
uint16_t f_lm1s[4096];
uint8_t f_output[8199];
} private_data;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_lzw__decoder, decltype(&free)>;
// On failure, the alloc_etc functions return nullptr. They don't throw.
static inline unique_ptr
alloc() {
return unique_ptr(wuffs_lzw__decoder__alloc(), &free);
}
static inline wuffs_base__io_transformer::unique_ptr
alloc_as__wuffs_base__io_transformer() {
return wuffs_base__io_transformer::unique_ptr(
wuffs_lzw__decoder__alloc_as__wuffs_base__io_transformer(), &free);
}
#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
// Disallow constructing or copying an object via standard C++ mechanisms,
// e.g. the "new" operator, as this struct is intentionally opaque. Its total
// size and field layout is not part of the public, stable, memory-safe API.
// Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
// call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
// their first argument) rather than tweaking bar.private_impl.qux fields.
//
// In C, we can just leave wuffs_foo__bar as an incomplete type (unless
// WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
// order to provide convenience methods. These forward on "this", so that you
// can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
wuffs_lzw__decoder__struct() = delete;
wuffs_lzw__decoder__struct(const wuffs_lzw__decoder__struct&) = delete;
wuffs_lzw__decoder__struct& operator=(
const wuffs_lzw__decoder__struct&) = delete;
#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
#if !defined(WUFFS_IMPLEMENTATION)
// As above, the size of the struct is not part of the public API, and unless
// WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
// allocated, not stack allocated. Its size is not intended to be known at
// compile time, but it is unfortunately divulged as a side effect of
// defining C++ convenience methods. Use "sizeof__T()", calling the function,
// instead of "sizeof T", invoking the operator. To make the two values
// different, so that passing the latter will be rejected by the initialize
// function, we add an arbitrary amount of dead weight.
uint8_t dead_weight[123000000]; // 123 MB.
#endif // !defined(WUFFS_IMPLEMENTATION)
inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
initialize(
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options) {
return wuffs_lzw__decoder__initialize(
this, sizeof_star_self, wuffs_version, options);
}
inline wuffs_base__io_transformer*
upcast_as__wuffs_base__io_transformer() {
return (wuffs_base__io_transformer*)this;
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_lzw__decoder__set_quirk_enabled(this, a_quirk, a_enabled);
}
inline wuffs_base__empty_struct
set_literal_width(
uint32_t a_lw) {
return wuffs_lzw__decoder__set_literal_width(this, a_lw);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_lzw__decoder__workbuf_len(this);
}
inline wuffs_base__status
transform_io(
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
return wuffs_lzw__decoder__transform_io(this, a_dst, a_src, a_workbuf);
}
inline wuffs_base__slice_u8
flush() {
return wuffs_lzw__decoder__flush(this);
}
#endif // __cplusplus
}; // struct wuffs_lzw__decoder__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// ---------------- Status Codes
extern const char wuffs_gif__error__bad_extension_label[];
extern const char wuffs_gif__error__bad_frame_size[];
extern const char wuffs_gif__error__bad_graphic_control[];
extern const char wuffs_gif__error__bad_header[];
extern const char wuffs_gif__error__bad_literal_width[];
extern const char wuffs_gif__error__bad_palette[];
// ---------------- Public Consts
#define WUFFS_GIF__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
#define WUFFS_GIF__QUIRK_DELAY_NUM_DECODED_FRAMES 1041635328
#define WUFFS_GIF__QUIRK_FIRST_FRAME_LOCAL_PALETTE_MEANS_BLACK_BACKGROUND 1041635329
#define WUFFS_GIF__QUIRK_HONOR_BACKGROUND_COLOR 1041635330
#define WUFFS_GIF__QUIRK_IGNORE_TOO_MUCH_PIXEL_DATA 1041635331
#define WUFFS_GIF__QUIRK_IMAGE_BOUNDS_ARE_STRICT 1041635332
#define WUFFS_GIF__QUIRK_REJECT_EMPTY_FRAME 1041635333
#define WUFFS_GIF__QUIRK_REJECT_EMPTY_PALETTE 1041635334
// ---------------- Struct Declarations
typedef struct wuffs_gif__decoder__struct wuffs_gif__decoder;
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Public Initializer Prototypes
// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
//
// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_gif__decoder__initialize(
wuffs_gif__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options);
size_t
sizeof__wuffs_gif__decoder();
// ---------------- Allocs
// These functions allocate and initialize Wuffs structs. They return NULL if
// memory allocation fails. If they return non-NULL, there is no need to call
// wuffs_foo__bar__initialize, but the caller is responsible for eventually
// calling free on the returned pointer. That pointer is effectively a C++
// std::unique_ptr<T, decltype(&free)>.
wuffs_gif__decoder*
wuffs_gif__decoder__alloc();
static inline wuffs_base__image_decoder*
wuffs_gif__decoder__alloc_as__wuffs_base__image_decoder() {
return (wuffs_base__image_decoder*)(wuffs_gif__decoder__alloc());
}
// ---------------- Upcasts
static inline wuffs_base__image_decoder*
wuffs_gif__decoder__upcast_as__wuffs_base__image_decoder(
wuffs_gif__decoder* p) {
return (wuffs_base__image_decoder*)p;
}
// ---------------- Public Function Prototypes
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_gif__decoder__set_quirk_enabled(
wuffs_gif__decoder* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_gif__decoder__decode_image_config(
wuffs_gif__decoder* self,
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_gif__decoder__set_report_metadata(
wuffs_gif__decoder* self,
uint32_t a_fourcc,
bool a_report);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_gif__decoder__tell_me_more(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_gif__decoder__num_animation_loops(
const wuffs_gif__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_gif__decoder__num_decoded_frame_configs(
const wuffs_gif__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_gif__decoder__num_decoded_frames(
const wuffs_gif__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
wuffs_gif__decoder__frame_dirty_rect(
const wuffs_gif__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_gif__decoder__workbuf_len(
const wuffs_gif__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_gif__decoder__restart_frame(
wuffs_gif__decoder* self,
uint64_t a_index,
uint64_t a_io_position);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_gif__decoder__decode_frame_config(
wuffs_gif__decoder* self,
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_gif__decoder__decode_frame(
wuffs_gif__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts);
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Struct Definitions
// These structs' fields, and the sizeof them, are private implementation
// details that aren't guaranteed to be stable across Wuffs versions.
//
// See https://en.wikipedia.org/wiki/Opaque_pointer#C
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_gif__decoder__struct {
// Do not access the private_impl's or private_data's fields directly. There
// is no API/ABI compatibility or safety guarantee if you do so. Instead, use
// the wuffs_foo__bar__baz functions.
//
// It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
// can be stack allocated when WUFFS_IMPLEMENTATION is defined.
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
wuffs_base__vtable null_vtable;
uint32_t f_width;
uint32_t f_height;
uint8_t f_call_sequence;
bool f_report_metadata_iccp;
bool f_report_metadata_xmp;
uint32_t f_metadata_fourcc;
uint64_t f_metadata_io_position;
bool f_quirks[7];
bool f_delayed_num_decoded_frames;
bool f_previous_lzw_decode_ended_abruptly;
bool f_seen_header;
bool f_has_global_palette;
uint8_t f_interlace;
bool f_seen_num_animation_loops_value;
uint32_t f_num_animation_loops_value;
uint32_t f_background_color_u32_argb_premul;
uint32_t f_black_color_u32_argb_premul;
bool f_gc_has_transparent_index;
uint8_t f_gc_transparent_index;
uint8_t f_gc_disposal;
uint64_t f_gc_duration;
uint64_t f_frame_config_io_position;
uint64_t f_num_decoded_frame_configs_value;
uint64_t f_num_decoded_frames_value;
uint32_t f_frame_rect_x0;
uint32_t f_frame_rect_y0;
uint32_t f_frame_rect_x1;
uint32_t f_frame_rect_y1;
uint32_t f_dst_x;
uint32_t f_dst_y;
uint32_t f_dirty_max_excl_y;
uint64_t f_compressed_ri;
uint64_t f_compressed_wi;
wuffs_base__pixel_swizzler f_swizzler;
uint32_t p_decode_image_config[1];
uint32_t p_tell_me_more[1];
uint32_t p_decode_frame_config[1];
uint32_t p_skip_frame[1];
uint32_t p_decode_frame[1];
uint32_t p_decode_up_to_id_part1[1];
uint32_t p_decode_header[1];
uint32_t p_decode_lsd[1];
uint32_t p_decode_extension[1];
uint32_t p_skip_blocks[1];
uint32_t p_decode_ae[1];
uint32_t p_decode_gc[1];
uint32_t p_decode_id_part0[1];
uint32_t p_decode_id_part1[1];
uint32_t p_decode_id_part2[1];
} private_impl;
struct {
uint8_t f_compressed[4096];
uint8_t f_palettes[2][1024];
uint8_t f_dst_palette[1024];
wuffs_lzw__decoder f_lzw;
struct {
uint32_t v_background_color;
} s_decode_frame_config[1];
struct {
uint64_t scratch;
} s_skip_frame[1];
struct {
uint8_t v_c[6];
uint32_t v_i;
} s_decode_header[1];
struct {
uint8_t v_flags;
uint8_t v_background_color_index;
uint32_t v_num_palette_entries;
uint32_t v_i;
uint64_t scratch;
} s_decode_lsd[1];
struct {
uint64_t scratch;
} s_skip_blocks[1];
struct {
uint8_t v_block_size;
bool v_is_animexts;
bool v_is_netscape;
bool v_is_iccp;
bool v_is_xmp;
uint64_t scratch;
} s_decode_ae[1];
struct {
uint64_t scratch;
} s_decode_gc[1];
struct {
uint64_t scratch;
} s_decode_id_part0[1];
struct {
uint8_t v_which_palette;
uint32_t v_num_palette_entries;
uint32_t v_i;
uint64_t scratch;
} s_decode_id_part1[1];
struct {
uint64_t v_block_size;
bool v_need_block_size;
uint64_t scratch;
} s_decode_id_part2[1];
} private_data;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_gif__decoder, decltype(&free)>;
// On failure, the alloc_etc functions return nullptr. They don't throw.
static inline unique_ptr
alloc() {
return unique_ptr(wuffs_gif__decoder__alloc(), &free);
}
static inline wuffs_base__image_decoder::unique_ptr
alloc_as__wuffs_base__image_decoder() {
return wuffs_base__image_decoder::unique_ptr(
wuffs_gif__decoder__alloc_as__wuffs_base__image_decoder(), &free);
}
#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
// Disallow constructing or copying an object via standard C++ mechanisms,
// e.g. the "new" operator, as this struct is intentionally opaque. Its total
// size and field layout is not part of the public, stable, memory-safe API.
// Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
// call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
// their first argument) rather than tweaking bar.private_impl.qux fields.
//
// In C, we can just leave wuffs_foo__bar as an incomplete type (unless
// WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
// order to provide convenience methods. These forward on "this", so that you
// can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
wuffs_gif__decoder__struct() = delete;
wuffs_gif__decoder__struct(const wuffs_gif__decoder__struct&) = delete;
wuffs_gif__decoder__struct& operator=(
const wuffs_gif__decoder__struct&) = delete;
#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
#if !defined(WUFFS_IMPLEMENTATION)
// As above, the size of the struct is not part of the public API, and unless
// WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
// allocated, not stack allocated. Its size is not intended to be known at
// compile time, but it is unfortunately divulged as a side effect of
// defining C++ convenience methods. Use "sizeof__T()", calling the function,
// instead of "sizeof T", invoking the operator. To make the two values
// different, so that passing the latter will be rejected by the initialize
// function, we add an arbitrary amount of dead weight.
uint8_t dead_weight[123000000]; // 123 MB.
#endif // !defined(WUFFS_IMPLEMENTATION)
inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
initialize(
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options) {
return wuffs_gif__decoder__initialize(
this, sizeof_star_self, wuffs_version, options);
}
inline wuffs_base__image_decoder*
upcast_as__wuffs_base__image_decoder() {
return (wuffs_base__image_decoder*)this;
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_gif__decoder__set_quirk_enabled(this, a_quirk, a_enabled);
}
inline wuffs_base__status
decode_image_config(
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src) {
return wuffs_gif__decoder__decode_image_config(this, a_dst, a_src);
}
inline wuffs_base__empty_struct
set_report_metadata(
uint32_t a_fourcc,
bool a_report) {
return wuffs_gif__decoder__set_report_metadata(this, a_fourcc, a_report);
}
inline wuffs_base__status
tell_me_more(
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src) {
return wuffs_gif__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
}
inline uint32_t
num_animation_loops() const {
return wuffs_gif__decoder__num_animation_loops(this);
}
inline uint64_t
num_decoded_frame_configs() const {
return wuffs_gif__decoder__num_decoded_frame_configs(this);
}
inline uint64_t
num_decoded_frames() const {
return wuffs_gif__decoder__num_decoded_frames(this);
}
inline wuffs_base__rect_ie_u32
frame_dirty_rect() const {
return wuffs_gif__decoder__frame_dirty_rect(this);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_gif__decoder__workbuf_len(this);
}
inline wuffs_base__status
restart_frame(
uint64_t a_index,
uint64_t a_io_position) {
return wuffs_gif__decoder__restart_frame(this, a_index, a_io_position);
}
inline wuffs_base__status
decode_frame_config(
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src) {
return wuffs_gif__decoder__decode_frame_config(this, a_dst, a_src);
}
inline wuffs_base__status
decode_frame(
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts) {
return wuffs_gif__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
}
#endif // __cplusplus
}; // struct wuffs_gif__decoder__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// ---------------- Status Codes
extern const char wuffs_gzip__error__bad_checksum[];
extern const char wuffs_gzip__error__bad_compression_method[];
extern const char wuffs_gzip__error__bad_encoding_flags[];
extern const char wuffs_gzip__error__bad_header[];
// ---------------- Public Consts
#define WUFFS_GZIP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1
// ---------------- Struct Declarations
typedef struct wuffs_gzip__decoder__struct wuffs_gzip__decoder;
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Public Initializer Prototypes
// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
//
// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_gzip__decoder__initialize(
wuffs_gzip__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options);
size_t
sizeof__wuffs_gzip__decoder();
// ---------------- Allocs
// These functions allocate and initialize Wuffs structs. They return NULL if
// memory allocation fails. If they return non-NULL, there is no need to call
// wuffs_foo__bar__initialize, but the caller is responsible for eventually
// calling free on the returned pointer. That pointer is effectively a C++
// std::unique_ptr<T, decltype(&free)>.
wuffs_gzip__decoder*
wuffs_gzip__decoder__alloc();
static inline wuffs_base__io_transformer*
wuffs_gzip__decoder__alloc_as__wuffs_base__io_transformer() {
return (wuffs_base__io_transformer*)(wuffs_gzip__decoder__alloc());
}
// ---------------- Upcasts
static inline wuffs_base__io_transformer*
wuffs_gzip__decoder__upcast_as__wuffs_base__io_transformer(
wuffs_gzip__decoder* p) {
return (wuffs_base__io_transformer*)p;
}
// ---------------- Public Function Prototypes
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_gzip__decoder__set_quirk_enabled(
wuffs_gzip__decoder* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_gzip__decoder__workbuf_len(
const wuffs_gzip__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_gzip__decoder__transform_io(
wuffs_gzip__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf);
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Struct Definitions
// These structs' fields, and the sizeof them, are private implementation
// details that aren't guaranteed to be stable across Wuffs versions.
//
// See https://en.wikipedia.org/wiki/Opaque_pointer#C
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_gzip__decoder__struct {
// Do not access the private_impl's or private_data's fields directly. There
// is no API/ABI compatibility or safety guarantee if you do so. Instead, use
// the wuffs_foo__bar__baz functions.
//
// It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
// can be stack allocated when WUFFS_IMPLEMENTATION is defined.
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
wuffs_base__vtable null_vtable;
bool f_ignore_checksum;
uint32_t p_transform_io[1];
} private_impl;
struct {
wuffs_crc32__ieee_hasher f_checksum;
wuffs_deflate__decoder f_flate;
struct {
uint8_t v_flags;
uint32_t v_checksum_got;
uint32_t v_decoded_length_got;
uint32_t v_checksum_want;
uint64_t scratch;
} s_transform_io[1];
} private_data;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_gzip__decoder, decltype(&free)>;
// On failure, the alloc_etc functions return nullptr. They don't throw.
static inline unique_ptr
alloc() {
return unique_ptr(wuffs_gzip__decoder__alloc(), &free);
}
static inline wuffs_base__io_transformer::unique_ptr
alloc_as__wuffs_base__io_transformer() {
return wuffs_base__io_transformer::unique_ptr(
wuffs_gzip__decoder__alloc_as__wuffs_base__io_transformer(), &free);
}
#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
// Disallow constructing or copying an object via standard C++ mechanisms,
// e.g. the "new" operator, as this struct is intentionally opaque. Its total
// size and field layout is not part of the public, stable, memory-safe API.
// Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
// call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
// their first argument) rather than tweaking bar.private_impl.qux fields.
//
// In C, we can just leave wuffs_foo__bar as an incomplete type (unless
// WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
// order to provide convenience methods. These forward on "this", so that you
// can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
wuffs_gzip__decoder__struct() = delete;
wuffs_gzip__decoder__struct(const wuffs_gzip__decoder__struct&) = delete;
wuffs_gzip__decoder__struct& operator=(
const wuffs_gzip__decoder__struct&) = delete;
#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
#if !defined(WUFFS_IMPLEMENTATION)
// As above, the size of the struct is not part of the public API, and unless
// WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
// allocated, not stack allocated. Its size is not intended to be known at
// compile time, but it is unfortunately divulged as a side effect of
// defining C++ convenience methods. Use "sizeof__T()", calling the function,
// instead of "sizeof T", invoking the operator. To make the two values
// different, so that passing the latter will be rejected by the initialize
// function, we add an arbitrary amount of dead weight.
uint8_t dead_weight[123000000]; // 123 MB.
#endif // !defined(WUFFS_IMPLEMENTATION)
inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
initialize(
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options) {
return wuffs_gzip__decoder__initialize(
this, sizeof_star_self, wuffs_version, options);
}
inline wuffs_base__io_transformer*
upcast_as__wuffs_base__io_transformer() {
return (wuffs_base__io_transformer*)this;
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_gzip__decoder__set_quirk_enabled(this, a_quirk, a_enabled);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_gzip__decoder__workbuf_len(this);
}
inline wuffs_base__status
transform_io(
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
return wuffs_gzip__decoder__transform_io(this, a_dst, a_src, a_workbuf);
}
#endif // __cplusplus
}; // struct wuffs_gzip__decoder__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// ---------------- Status Codes
extern const char wuffs_json__error__bad_c0_control_code[];
extern const char wuffs_json__error__bad_utf_8[];
extern const char wuffs_json__error__bad_backslash_escape[];
extern const char wuffs_json__error__bad_input[];
extern const char wuffs_json__error__bad_new_line_in_a_string[];
extern const char wuffs_json__error__bad_quirk_combination[];
extern const char wuffs_json__error__unsupported_number_length[];
extern const char wuffs_json__error__unsupported_recursion_depth[];
// ---------------- Public Consts
#define WUFFS_JSON__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
#define WUFFS_JSON__DECODER_DEPTH_MAX_INCL 1024
#define WUFFS_JSON__DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL 1
#define WUFFS_JSON__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 100
#define WUFFS_JSON__QUIRK_ALLOW_ASCII_CONTROL_CODES 1225364480
#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_A 1225364481
#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_CAPITAL_U 1225364482
#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_E 1225364483
#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_NEW_LINE 1225364484
#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_QUESTION_MARK 1225364485
#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_SINGLE_QUOTE 1225364486
#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_V 1225364487
#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_X_AS_CODE_POINTS 1225364489
#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_ZERO 1225364490
#define WUFFS_JSON__QUIRK_ALLOW_COMMENT_BLOCK 1225364491
#define WUFFS_JSON__QUIRK_ALLOW_COMMENT_LINE 1225364492
#define WUFFS_JSON__QUIRK_ALLOW_EXTRA_COMMA 1225364493
#define WUFFS_JSON__QUIRK_ALLOW_INF_NAN_NUMBERS 1225364494
#define WUFFS_JSON__QUIRK_ALLOW_LEADING_ASCII_RECORD_SEPARATOR 1225364495
#define WUFFS_JSON__QUIRK_ALLOW_LEADING_UNICODE_BYTE_ORDER_MARK 1225364496
#define WUFFS_JSON__QUIRK_ALLOW_TRAILING_FILLER 1225364497
#define WUFFS_JSON__QUIRK_EXPECT_TRAILING_NEW_LINE_OR_EOF 1225364498
#define WUFFS_JSON__QUIRK_JSON_POINTER_ALLOW_TILDE_N_TILDE_R_TILDE_T 1225364499
#define WUFFS_JSON__QUIRK_REPLACE_INVALID_UNICODE 1225364500
// ---------------- Struct Declarations
typedef struct wuffs_json__decoder__struct wuffs_json__decoder;
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Public Initializer Prototypes
// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
//
// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_json__decoder__initialize(
wuffs_json__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options);
size_t
sizeof__wuffs_json__decoder();
// ---------------- Allocs
// These functions allocate and initialize Wuffs structs. They return NULL if
// memory allocation fails. If they return non-NULL, there is no need to call
// wuffs_foo__bar__initialize, but the caller is responsible for eventually
// calling free on the returned pointer. That pointer is effectively a C++
// std::unique_ptr<T, decltype(&free)>.
wuffs_json__decoder*
wuffs_json__decoder__alloc();
static inline wuffs_base__token_decoder*
wuffs_json__decoder__alloc_as__wuffs_base__token_decoder() {
return (wuffs_base__token_decoder*)(wuffs_json__decoder__alloc());
}
// ---------------- Upcasts
static inline wuffs_base__token_decoder*
wuffs_json__decoder__upcast_as__wuffs_base__token_decoder(
wuffs_json__decoder* p) {
return (wuffs_base__token_decoder*)p;
}
// ---------------- Public Function Prototypes
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_json__decoder__set_quirk_enabled(
wuffs_json__decoder* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_json__decoder__workbuf_len(
const wuffs_json__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_json__decoder__decode_tokens(
wuffs_json__decoder* self,
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf);
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Struct Definitions
// These structs' fields, and the sizeof them, are private implementation
// details that aren't guaranteed to be stable across Wuffs versions.
//
// See https://en.wikipedia.org/wiki/Opaque_pointer#C
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_json__decoder__struct {
// Do not access the private_impl's or private_data's fields directly. There
// is no API/ABI compatibility or safety guarantee if you do so. Instead, use
// the wuffs_foo__bar__baz functions.
//
// It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
// can be stack allocated when WUFFS_IMPLEMENTATION is defined.
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable vtable_for__wuffs_base__token_decoder;
wuffs_base__vtable null_vtable;
bool f_quirks[21];
bool f_allow_leading_ars;
bool f_allow_leading_ubom;
bool f_end_of_data;
uint8_t f_trailer_stop;
uint8_t f_comment_type;
uint32_t p_decode_tokens[1];
uint32_t p_decode_leading[1];
uint32_t p_decode_comment[1];
uint32_t p_decode_inf_nan[1];
uint32_t p_decode_trailer[1];
} private_impl;
struct {
uint32_t f_stack[32];
struct {
uint32_t v_depth;
uint32_t v_expect;
uint32_t v_expect_after_value;
} s_decode_tokens[1];
} private_data;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_json__decoder, decltype(&free)>;
// On failure, the alloc_etc functions return nullptr. They don't throw.
static inline unique_ptr
alloc() {
return unique_ptr(wuffs_json__decoder__alloc(), &free);
}
static inline wuffs_base__token_decoder::unique_ptr
alloc_as__wuffs_base__token_decoder() {
return wuffs_base__token_decoder::unique_ptr(
wuffs_json__decoder__alloc_as__wuffs_base__token_decoder(), &free);
}
#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
// Disallow constructing or copying an object via standard C++ mechanisms,
// e.g. the "new" operator, as this struct is intentionally opaque. Its total
// size and field layout is not part of the public, stable, memory-safe API.
// Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
// call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
// their first argument) rather than tweaking bar.private_impl.qux fields.
//
// In C, we can just leave wuffs_foo__bar as an incomplete type (unless
// WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
// order to provide convenience methods. These forward on "this", so that you
// can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
wuffs_json__decoder__struct() = delete;
wuffs_json__decoder__struct(const wuffs_json__decoder__struct&) = delete;
wuffs_json__decoder__struct& operator=(
const wuffs_json__decoder__struct&) = delete;
#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
#if !defined(WUFFS_IMPLEMENTATION)
// As above, the size of the struct is not part of the public API, and unless
// WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
// allocated, not stack allocated. Its size is not intended to be known at
// compile time, but it is unfortunately divulged as a side effect of
// defining C++ convenience methods. Use "sizeof__T()", calling the function,
// instead of "sizeof T", invoking the operator. To make the two values
// different, so that passing the latter will be rejected by the initialize
// function, we add an arbitrary amount of dead weight.
uint8_t dead_weight[123000000]; // 123 MB.
#endif // !defined(WUFFS_IMPLEMENTATION)
inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
initialize(
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options) {
return wuffs_json__decoder__initialize(
this, sizeof_star_self, wuffs_version, options);
}
inline wuffs_base__token_decoder*
upcast_as__wuffs_base__token_decoder() {
return (wuffs_base__token_decoder*)this;
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_json__decoder__set_quirk_enabled(this, a_quirk, a_enabled);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_json__decoder__workbuf_len(this);
}
inline wuffs_base__status
decode_tokens(
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
return wuffs_json__decoder__decode_tokens(this, a_dst, a_src, a_workbuf);
}
#endif // __cplusplus
}; // struct wuffs_json__decoder__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// ---------------- Status Codes
extern const char wuffs_nie__error__bad_header[];
extern const char wuffs_nie__error__unsupported_nie_file[];
// ---------------- Public Consts
#define WUFFS_NIE__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
// ---------------- Struct Declarations
typedef struct wuffs_nie__decoder__struct wuffs_nie__decoder;
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Public Initializer Prototypes
// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
//
// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_nie__decoder__initialize(
wuffs_nie__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options);
size_t
sizeof__wuffs_nie__decoder();
// ---------------- Allocs
// These functions allocate and initialize Wuffs structs. They return NULL if
// memory allocation fails. If they return non-NULL, there is no need to call
// wuffs_foo__bar__initialize, but the caller is responsible for eventually
// calling free on the returned pointer. That pointer is effectively a C++
// std::unique_ptr<T, decltype(&free)>.
wuffs_nie__decoder*
wuffs_nie__decoder__alloc();
static inline wuffs_base__image_decoder*
wuffs_nie__decoder__alloc_as__wuffs_base__image_decoder() {
return (wuffs_base__image_decoder*)(wuffs_nie__decoder__alloc());
}
// ---------------- Upcasts
static inline wuffs_base__image_decoder*
wuffs_nie__decoder__upcast_as__wuffs_base__image_decoder(
wuffs_nie__decoder* p) {
return (wuffs_base__image_decoder*)p;
}
// ---------------- Public Function Prototypes
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_nie__decoder__set_quirk_enabled(
wuffs_nie__decoder* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_nie__decoder__decode_image_config(
wuffs_nie__decoder* self,
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_nie__decoder__decode_frame_config(
wuffs_nie__decoder* self,
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_nie__decoder__decode_frame(
wuffs_nie__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts);
WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
wuffs_nie__decoder__frame_dirty_rect(
const wuffs_nie__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_nie__decoder__num_animation_loops(
const wuffs_nie__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_nie__decoder__num_decoded_frame_configs(
const wuffs_nie__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_nie__decoder__num_decoded_frames(
const wuffs_nie__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_nie__decoder__restart_frame(
wuffs_nie__decoder* self,
uint64_t a_index,
uint64_t a_io_position);
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_nie__decoder__set_report_metadata(
wuffs_nie__decoder* self,
uint32_t a_fourcc,
bool a_report);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_nie__decoder__tell_me_more(
wuffs_nie__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_nie__decoder__workbuf_len(
const wuffs_nie__decoder* self);
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Struct Definitions
// These structs' fields, and the sizeof them, are private implementation
// details that aren't guaranteed to be stable across Wuffs versions.
//
// See https://en.wikipedia.org/wiki/Opaque_pointer#C
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_nie__decoder__struct {
// Do not access the private_impl's or private_data's fields directly. There
// is no API/ABI compatibility or safety guarantee if you do so. Instead, use
// the wuffs_foo__bar__baz functions.
//
// It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
// can be stack allocated when WUFFS_IMPLEMENTATION is defined.
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
wuffs_base__vtable null_vtable;
uint32_t f_pixfmt;
uint32_t f_width;
uint32_t f_height;
uint8_t f_call_sequence;
uint32_t f_dst_x;
uint32_t f_dst_y;
wuffs_base__pixel_swizzler f_swizzler;
uint32_t p_decode_image_config[1];
uint32_t p_decode_frame_config[1];
uint32_t p_decode_frame[1];
} private_impl;
struct {
struct {
uint64_t scratch;
} s_decode_image_config[1];
} private_data;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_nie__decoder, decltype(&free)>;
// On failure, the alloc_etc functions return nullptr. They don't throw.
static inline unique_ptr
alloc() {
return unique_ptr(wuffs_nie__decoder__alloc(), &free);
}
static inline wuffs_base__image_decoder::unique_ptr
alloc_as__wuffs_base__image_decoder() {
return wuffs_base__image_decoder::unique_ptr(
wuffs_nie__decoder__alloc_as__wuffs_base__image_decoder(), &free);
}
#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
// Disallow constructing or copying an object via standard C++ mechanisms,
// e.g. the "new" operator, as this struct is intentionally opaque. Its total
// size and field layout is not part of the public, stable, memory-safe API.
// Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
// call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
// their first argument) rather than tweaking bar.private_impl.qux fields.
//
// In C, we can just leave wuffs_foo__bar as an incomplete type (unless
// WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
// order to provide convenience methods. These forward on "this", so that you
// can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
wuffs_nie__decoder__struct() = delete;
wuffs_nie__decoder__struct(const wuffs_nie__decoder__struct&) = delete;
wuffs_nie__decoder__struct& operator=(
const wuffs_nie__decoder__struct&) = delete;
#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
#if !defined(WUFFS_IMPLEMENTATION)
// As above, the size of the struct is not part of the public API, and unless
// WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
// allocated, not stack allocated. Its size is not intended to be known at
// compile time, but it is unfortunately divulged as a side effect of
// defining C++ convenience methods. Use "sizeof__T()", calling the function,
// instead of "sizeof T", invoking the operator. To make the two values
// different, so that passing the latter will be rejected by the initialize
// function, we add an arbitrary amount of dead weight.
uint8_t dead_weight[123000000]; // 123 MB.
#endif // !defined(WUFFS_IMPLEMENTATION)
inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
initialize(
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options) {
return wuffs_nie__decoder__initialize(
this, sizeof_star_self, wuffs_version, options);
}
inline wuffs_base__image_decoder*
upcast_as__wuffs_base__image_decoder() {
return (wuffs_base__image_decoder*)this;
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_nie__decoder__set_quirk_enabled(this, a_quirk, a_enabled);
}
inline wuffs_base__status
decode_image_config(
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src) {
return wuffs_nie__decoder__decode_image_config(this, a_dst, a_src);
}
inline wuffs_base__status
decode_frame_config(
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src) {
return wuffs_nie__decoder__decode_frame_config(this, a_dst, a_src);
}
inline wuffs_base__status
decode_frame(
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts) {
return wuffs_nie__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
}
inline wuffs_base__rect_ie_u32
frame_dirty_rect() const {
return wuffs_nie__decoder__frame_dirty_rect(this);
}
inline uint32_t
num_animation_loops() const {
return wuffs_nie__decoder__num_animation_loops(this);
}
inline uint64_t
num_decoded_frame_configs() const {
return wuffs_nie__decoder__num_decoded_frame_configs(this);
}
inline uint64_t
num_decoded_frames() const {
return wuffs_nie__decoder__num_decoded_frames(this);
}
inline wuffs_base__status
restart_frame(
uint64_t a_index,
uint64_t a_io_position) {
return wuffs_nie__decoder__restart_frame(this, a_index, a_io_position);
}
inline wuffs_base__empty_struct
set_report_metadata(
uint32_t a_fourcc,
bool a_report) {
return wuffs_nie__decoder__set_report_metadata(this, a_fourcc, a_report);
}
inline wuffs_base__status
tell_me_more(
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src) {
return wuffs_nie__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_nie__decoder__workbuf_len(this);
}
#endif // __cplusplus
}; // struct wuffs_nie__decoder__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// ---------------- Status Codes
extern const char wuffs_zlib__note__dictionary_required[];
extern const char wuffs_zlib__error__bad_checksum[];
extern const char wuffs_zlib__error__bad_compression_method[];
extern const char wuffs_zlib__error__bad_compression_window_size[];
extern const char wuffs_zlib__error__bad_parity_check[];
extern const char wuffs_zlib__error__incorrect_dictionary[];
// ---------------- Public Consts
#define WUFFS_ZLIB__QUIRK_JUST_RAW_DEFLATE 2113790976
#define WUFFS_ZLIB__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1
// ---------------- Struct Declarations
typedef struct wuffs_zlib__decoder__struct wuffs_zlib__decoder;
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Public Initializer Prototypes
// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
//
// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_zlib__decoder__initialize(
wuffs_zlib__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options);
size_t
sizeof__wuffs_zlib__decoder();
// ---------------- Allocs
// These functions allocate and initialize Wuffs structs. They return NULL if
// memory allocation fails. If they return non-NULL, there is no need to call
// wuffs_foo__bar__initialize, but the caller is responsible for eventually
// calling free on the returned pointer. That pointer is effectively a C++
// std::unique_ptr<T, decltype(&free)>.
wuffs_zlib__decoder*
wuffs_zlib__decoder__alloc();
static inline wuffs_base__io_transformer*
wuffs_zlib__decoder__alloc_as__wuffs_base__io_transformer() {
return (wuffs_base__io_transformer*)(wuffs_zlib__decoder__alloc());
}
// ---------------- Upcasts
static inline wuffs_base__io_transformer*
wuffs_zlib__decoder__upcast_as__wuffs_base__io_transformer(
wuffs_zlib__decoder* p) {
return (wuffs_base__io_transformer*)p;
}
// ---------------- Public Function Prototypes
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_zlib__decoder__dictionary_id(
const wuffs_zlib__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_zlib__decoder__add_dictionary(
wuffs_zlib__decoder* self,
wuffs_base__slice_u8 a_dict);
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_zlib__decoder__set_quirk_enabled(
wuffs_zlib__decoder* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_zlib__decoder__workbuf_len(
const wuffs_zlib__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_zlib__decoder__transform_io(
wuffs_zlib__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf);
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Struct Definitions
// These structs' fields, and the sizeof them, are private implementation
// details that aren't guaranteed to be stable across Wuffs versions.
//
// See https://en.wikipedia.org/wiki/Opaque_pointer#C
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_zlib__decoder__struct {
// Do not access the private_impl's or private_data's fields directly. There
// is no API/ABI compatibility or safety guarantee if you do so. Instead, use
// the wuffs_foo__bar__baz functions.
//
// It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
// can be stack allocated when WUFFS_IMPLEMENTATION is defined.
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable vtable_for__wuffs_base__io_transformer;
wuffs_base__vtable null_vtable;
bool f_bad_call_sequence;
bool f_header_complete;
bool f_got_dictionary;
bool f_want_dictionary;
bool f_quirks[1];
bool f_ignore_checksum;
uint32_t f_dict_id_got;
uint32_t f_dict_id_want;
uint32_t p_transform_io[1];
} private_impl;
struct {
wuffs_adler32__hasher f_checksum;
wuffs_adler32__hasher f_dict_id_hasher;
wuffs_deflate__decoder f_flate;
struct {
uint32_t v_checksum_got;
uint64_t scratch;
} s_transform_io[1];
} private_data;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_zlib__decoder, decltype(&free)>;
// On failure, the alloc_etc functions return nullptr. They don't throw.
static inline unique_ptr
alloc() {
return unique_ptr(wuffs_zlib__decoder__alloc(), &free);
}
static inline wuffs_base__io_transformer::unique_ptr
alloc_as__wuffs_base__io_transformer() {
return wuffs_base__io_transformer::unique_ptr(
wuffs_zlib__decoder__alloc_as__wuffs_base__io_transformer(), &free);
}
#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
// Disallow constructing or copying an object via standard C++ mechanisms,
// e.g. the "new" operator, as this struct is intentionally opaque. Its total
// size and field layout is not part of the public, stable, memory-safe API.
// Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
// call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
// their first argument) rather than tweaking bar.private_impl.qux fields.
//
// In C, we can just leave wuffs_foo__bar as an incomplete type (unless
// WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
// order to provide convenience methods. These forward on "this", so that you
// can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
wuffs_zlib__decoder__struct() = delete;
wuffs_zlib__decoder__struct(const wuffs_zlib__decoder__struct&) = delete;
wuffs_zlib__decoder__struct& operator=(
const wuffs_zlib__decoder__struct&) = delete;
#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
#if !defined(WUFFS_IMPLEMENTATION)
// As above, the size of the struct is not part of the public API, and unless
// WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
// allocated, not stack allocated. Its size is not intended to be known at
// compile time, but it is unfortunately divulged as a side effect of
// defining C++ convenience methods. Use "sizeof__T()", calling the function,
// instead of "sizeof T", invoking the operator. To make the two values
// different, so that passing the latter will be rejected by the initialize
// function, we add an arbitrary amount of dead weight.
uint8_t dead_weight[123000000]; // 123 MB.
#endif // !defined(WUFFS_IMPLEMENTATION)
inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
initialize(
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options) {
return wuffs_zlib__decoder__initialize(
this, sizeof_star_self, wuffs_version, options);
}
inline wuffs_base__io_transformer*
upcast_as__wuffs_base__io_transformer() {
return (wuffs_base__io_transformer*)this;
}
inline uint32_t
dictionary_id() const {
return wuffs_zlib__decoder__dictionary_id(this);
}
inline wuffs_base__empty_struct
add_dictionary(
wuffs_base__slice_u8 a_dict) {
return wuffs_zlib__decoder__add_dictionary(this, a_dict);
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_zlib__decoder__set_quirk_enabled(this, a_quirk, a_enabled);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_zlib__decoder__workbuf_len(this);
}
inline wuffs_base__status
transform_io(
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
return wuffs_zlib__decoder__transform_io(this, a_dst, a_src, a_workbuf);
}
#endif // __cplusplus
}; // struct wuffs_zlib__decoder__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// ---------------- Status Codes
extern const char wuffs_png__error__bad_animation_sequence_number[];
extern const char wuffs_png__error__bad_checksum[];
extern const char wuffs_png__error__bad_chunk[];
extern const char wuffs_png__error__bad_filter[];
extern const char wuffs_png__error__bad_header[];
extern const char wuffs_png__error__bad_text_chunk_not_latin_1[];
extern const char wuffs_png__error__missing_palette[];
extern const char wuffs_png__error__unsupported_cgbi_extension[];
extern const char wuffs_png__error__unsupported_png_compression_method[];
extern const char wuffs_png__error__unsupported_png_file[];
// ---------------- Public Consts
#define WUFFS_PNG__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 2251799562027015
#define WUFFS_PNG__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 8
// ---------------- Struct Declarations
typedef struct wuffs_png__decoder__struct wuffs_png__decoder;
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Public Initializer Prototypes
// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
//
// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_png__decoder__initialize(
wuffs_png__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options);
size_t
sizeof__wuffs_png__decoder();
// ---------------- Allocs
// These functions allocate and initialize Wuffs structs. They return NULL if
// memory allocation fails. If they return non-NULL, there is no need to call
// wuffs_foo__bar__initialize, but the caller is responsible for eventually
// calling free on the returned pointer. That pointer is effectively a C++
// std::unique_ptr<T, decltype(&free)>.
wuffs_png__decoder*
wuffs_png__decoder__alloc();
static inline wuffs_base__image_decoder*
wuffs_png__decoder__alloc_as__wuffs_base__image_decoder() {
return (wuffs_base__image_decoder*)(wuffs_png__decoder__alloc());
}
// ---------------- Upcasts
static inline wuffs_base__image_decoder*
wuffs_png__decoder__upcast_as__wuffs_base__image_decoder(
wuffs_png__decoder* p) {
return (wuffs_base__image_decoder*)p;
}
// ---------------- Public Function Prototypes
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_png__decoder__set_quirk_enabled(
wuffs_png__decoder* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_png__decoder__decode_image_config(
wuffs_png__decoder* self,
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_png__decoder__decode_frame_config(
wuffs_png__decoder* self,
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_png__decoder__decode_frame(
wuffs_png__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts);
WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
wuffs_png__decoder__frame_dirty_rect(
const wuffs_png__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_png__decoder__num_animation_loops(
const wuffs_png__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_png__decoder__num_decoded_frame_configs(
const wuffs_png__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_png__decoder__num_decoded_frames(
const wuffs_png__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_png__decoder__restart_frame(
wuffs_png__decoder* self,
uint64_t a_index,
uint64_t a_io_position);
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_png__decoder__set_report_metadata(
wuffs_png__decoder* self,
uint32_t a_fourcc,
bool a_report);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_png__decoder__tell_me_more(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_png__decoder__workbuf_len(
const wuffs_png__decoder* self);
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Struct Definitions
// These structs' fields, and the sizeof them, are private implementation
// details that aren't guaranteed to be stable across Wuffs versions.
//
// See https://en.wikipedia.org/wiki/Opaque_pointer#C
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_png__decoder__struct {
// Do not access the private_impl's or private_data's fields directly. There
// is no API/ABI compatibility or safety guarantee if you do so. Instead, use
// the wuffs_foo__bar__baz functions.
//
// It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
// can be stack allocated when WUFFS_IMPLEMENTATION is defined.
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
wuffs_base__vtable null_vtable;
uint32_t f_width;
uint32_t f_height;
uint64_t f_pass_bytes_per_row;
uint64_t f_workbuf_wi;
uint64_t f_workbuf_hist_pos_base;
uint64_t f_overall_workbuf_length;
uint64_t f_pass_workbuf_length;
uint8_t f_call_sequence;
bool f_report_metadata_chrm;
bool f_report_metadata_exif;
bool f_report_metadata_gama;
bool f_report_metadata_iccp;
bool f_report_metadata_kvp;
bool f_report_metadata_srgb;
bool f_ignore_checksum;
uint8_t f_depth;
uint8_t f_color_type;
uint8_t f_filter_distance;
uint8_t f_interlace_pass;
bool f_seen_actl;
bool f_seen_chrm;
bool f_seen_fctl;
bool f_seen_exif;
bool f_seen_gama;
bool f_seen_iccp;
bool f_seen_idat;
bool f_seen_ihdr;
bool f_seen_plte;
bool f_seen_srgb;
bool f_seen_trns;
bool f_metadata_is_zlib_compressed;
bool f_zlib_is_dirty;
uint32_t f_chunk_type;
uint8_t f_chunk_type_array[4];
uint32_t f_chunk_length;
uint64_t f_remap_transparency;
uint32_t f_dst_pixfmt;
uint32_t f_src_pixfmt;
uint32_t f_num_animation_frames_value;
uint32_t f_num_animation_loops_value;
uint32_t f_num_decoded_frame_configs_value;
uint32_t f_num_decoded_frames_value;
uint32_t f_frame_rect_x0;
uint32_t f_frame_rect_y0;
uint32_t f_frame_rect_x1;
uint32_t f_frame_rect_y1;
uint32_t f_first_rect_x0;
uint32_t f_first_rect_y0;
uint32_t f_first_rect_x1;
uint32_t f_first_rect_y1;
uint64_t f_frame_config_io_position;
uint64_t f_first_config_io_position;
uint64_t f_frame_duration;
uint64_t f_first_duration;
uint8_t f_frame_disposal;
uint8_t f_first_disposal;
bool f_frame_overwrite_instead_of_blend;
bool f_first_overwrite_instead_of_blend;
uint32_t f_next_animation_seq_num;
uint32_t f_metadata_flavor;
uint32_t f_metadata_fourcc;
uint64_t f_metadata_x;
uint64_t f_metadata_y;
uint64_t f_metadata_z;
uint32_t f_ztxt_ri;
uint32_t f_ztxt_wi;
uint64_t f_ztxt_hist_pos;
wuffs_base__pixel_swizzler f_swizzler;
wuffs_base__empty_struct (*choosy_filter_1)(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr);
wuffs_base__empty_struct (*choosy_filter_3)(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
wuffs_base__empty_struct (*choosy_filter_4)(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
uint32_t p_decode_image_config[1];
uint32_t p_decode_ihdr[1];
uint32_t p_decode_other_chunk[1];
uint32_t p_decode_actl[1];
uint32_t p_decode_chrm[1];
uint32_t p_decode_fctl[1];
uint32_t p_decode_gama[1];
uint32_t p_decode_iccp[1];
uint32_t p_decode_plte[1];
uint32_t p_decode_srgb[1];
uint32_t p_decode_trns[1];
uint32_t p_decode_frame_config[1];
uint32_t p_skip_frame[1];
uint32_t p_decode_frame[1];
uint32_t p_decode_pass[1];
uint32_t p_tell_me_more[1];
wuffs_base__status (*choosy_filter_and_swizzle)(
wuffs_png__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__slice_u8 a_workbuf);
} private_impl;
struct {
wuffs_crc32__ieee_hasher f_crc32;
wuffs_zlib__decoder f_zlib;
uint8_t f_dst_palette[1024];
uint8_t f_src_palette[1024];
struct {
uint32_t v_checksum_have;
uint64_t scratch;
} s_decode_image_config[1];
struct {
uint64_t scratch;
} s_decode_ihdr[1];
struct {
uint64_t scratch;
} s_decode_other_chunk[1];
struct {
uint64_t scratch;
} s_decode_actl[1];
struct {
uint64_t scratch;
} s_decode_chrm[1];
struct {
uint32_t v_x0;
uint32_t v_x1;
uint32_t v_y1;
uint64_t scratch;
} s_decode_fctl[1];
struct {
uint64_t scratch;
} s_decode_gama[1];
struct {
uint32_t v_num_entries;
uint32_t v_i;
uint64_t scratch;
} s_decode_plte[1];
struct {
uint32_t v_i;
uint32_t v_n;
uint64_t scratch;
} s_decode_trns[1];
struct {
uint64_t scratch;
} s_decode_frame_config[1];
struct {
uint64_t scratch;
} s_skip_frame[1];
struct {
uint64_t scratch;
} s_decode_frame[1];
struct {
uint64_t scratch;
} s_decode_pass[1];
struct {
wuffs_base__status v_zlib_status;
uint64_t scratch;
} s_tell_me_more[1];
} private_data;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_png__decoder, decltype(&free)>;
// On failure, the alloc_etc functions return nullptr. They don't throw.
static inline unique_ptr
alloc() {
return unique_ptr(wuffs_png__decoder__alloc(), &free);
}
static inline wuffs_base__image_decoder::unique_ptr
alloc_as__wuffs_base__image_decoder() {
return wuffs_base__image_decoder::unique_ptr(
wuffs_png__decoder__alloc_as__wuffs_base__image_decoder(), &free);
}
#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
// Disallow constructing or copying an object via standard C++ mechanisms,
// e.g. the "new" operator, as this struct is intentionally opaque. Its total
// size and field layout is not part of the public, stable, memory-safe API.
// Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
// call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
// their first argument) rather than tweaking bar.private_impl.qux fields.
//
// In C, we can just leave wuffs_foo__bar as an incomplete type (unless
// WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
// order to provide convenience methods. These forward on "this", so that you
// can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
wuffs_png__decoder__struct() = delete;
wuffs_png__decoder__struct(const wuffs_png__decoder__struct&) = delete;
wuffs_png__decoder__struct& operator=(
const wuffs_png__decoder__struct&) = delete;
#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
#if !defined(WUFFS_IMPLEMENTATION)
// As above, the size of the struct is not part of the public API, and unless
// WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
// allocated, not stack allocated. Its size is not intended to be known at
// compile time, but it is unfortunately divulged as a side effect of
// defining C++ convenience methods. Use "sizeof__T()", calling the function,
// instead of "sizeof T", invoking the operator. To make the two values
// different, so that passing the latter will be rejected by the initialize
// function, we add an arbitrary amount of dead weight.
uint8_t dead_weight[123000000]; // 123 MB.
#endif // !defined(WUFFS_IMPLEMENTATION)
inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
initialize(
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options) {
return wuffs_png__decoder__initialize(
this, sizeof_star_self, wuffs_version, options);
}
inline wuffs_base__image_decoder*
upcast_as__wuffs_base__image_decoder() {
return (wuffs_base__image_decoder*)this;
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_png__decoder__set_quirk_enabled(this, a_quirk, a_enabled);
}
inline wuffs_base__status
decode_image_config(
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src) {
return wuffs_png__decoder__decode_image_config(this, a_dst, a_src);
}
inline wuffs_base__status
decode_frame_config(
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src) {
return wuffs_png__decoder__decode_frame_config(this, a_dst, a_src);
}
inline wuffs_base__status
decode_frame(
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts) {
return wuffs_png__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
}
inline wuffs_base__rect_ie_u32
frame_dirty_rect() const {
return wuffs_png__decoder__frame_dirty_rect(this);
}
inline uint32_t
num_animation_loops() const {
return wuffs_png__decoder__num_animation_loops(this);
}
inline uint64_t
num_decoded_frame_configs() const {
return wuffs_png__decoder__num_decoded_frame_configs(this);
}
inline uint64_t
num_decoded_frames() const {
return wuffs_png__decoder__num_decoded_frames(this);
}
inline wuffs_base__status
restart_frame(
uint64_t a_index,
uint64_t a_io_position) {
return wuffs_png__decoder__restart_frame(this, a_index, a_io_position);
}
inline wuffs_base__empty_struct
set_report_metadata(
uint32_t a_fourcc,
bool a_report) {
return wuffs_png__decoder__set_report_metadata(this, a_fourcc, a_report);
}
inline wuffs_base__status
tell_me_more(
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src) {
return wuffs_png__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_png__decoder__workbuf_len(this);
}
#endif // __cplusplus
}; // struct wuffs_png__decoder__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// ---------------- Status Codes
extern const char wuffs_tga__error__bad_header[];
extern const char wuffs_tga__error__bad_run_length_encoding[];
extern const char wuffs_tga__error__unsupported_tga_file[];
// ---------------- Public Consts
#define WUFFS_TGA__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
// ---------------- Struct Declarations
typedef struct wuffs_tga__decoder__struct wuffs_tga__decoder;
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Public Initializer Prototypes
// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
//
// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_tga__decoder__initialize(
wuffs_tga__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options);
size_t
sizeof__wuffs_tga__decoder();
// ---------------- Allocs
// These functions allocate and initialize Wuffs structs. They return NULL if
// memory allocation fails. If they return non-NULL, there is no need to call
// wuffs_foo__bar__initialize, but the caller is responsible for eventually
// calling free on the returned pointer. That pointer is effectively a C++
// std::unique_ptr<T, decltype(&free)>.
wuffs_tga__decoder*
wuffs_tga__decoder__alloc();
static inline wuffs_base__image_decoder*
wuffs_tga__decoder__alloc_as__wuffs_base__image_decoder() {
return (wuffs_base__image_decoder*)(wuffs_tga__decoder__alloc());
}
// ---------------- Upcasts
static inline wuffs_base__image_decoder*
wuffs_tga__decoder__upcast_as__wuffs_base__image_decoder(
wuffs_tga__decoder* p) {
return (wuffs_base__image_decoder*)p;
}
// ---------------- Public Function Prototypes
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_tga__decoder__set_quirk_enabled(
wuffs_tga__decoder* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_tga__decoder__decode_image_config(
wuffs_tga__decoder* self,
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_tga__decoder__decode_frame_config(
wuffs_tga__decoder* self,
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_tga__decoder__decode_frame(
wuffs_tga__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts);
WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
wuffs_tga__decoder__frame_dirty_rect(
const wuffs_tga__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_tga__decoder__num_animation_loops(
const wuffs_tga__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_tga__decoder__num_decoded_frame_configs(
const wuffs_tga__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_tga__decoder__num_decoded_frames(
const wuffs_tga__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_tga__decoder__restart_frame(
wuffs_tga__decoder* self,
uint64_t a_index,
uint64_t a_io_position);
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_tga__decoder__set_report_metadata(
wuffs_tga__decoder* self,
uint32_t a_fourcc,
bool a_report);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_tga__decoder__tell_me_more(
wuffs_tga__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_tga__decoder__workbuf_len(
const wuffs_tga__decoder* self);
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Struct Definitions
// These structs' fields, and the sizeof them, are private implementation
// details that aren't guaranteed to be stable across Wuffs versions.
//
// See https://en.wikipedia.org/wiki/Opaque_pointer#C
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_tga__decoder__struct {
// Do not access the private_impl's or private_data's fields directly. There
// is no API/ABI compatibility or safety guarantee if you do so. Instead, use
// the wuffs_foo__bar__baz functions.
//
// It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
// can be stack allocated when WUFFS_IMPLEMENTATION is defined.
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
wuffs_base__vtable null_vtable;
uint32_t f_width;
uint32_t f_height;
uint8_t f_call_sequence;
uint8_t f_header_id_length;
uint8_t f_header_color_map_type;
uint8_t f_header_image_type;
uint16_t f_header_color_map_first_entry_index;
uint16_t f_header_color_map_length;
uint8_t f_header_color_map_entry_size;
uint8_t f_header_pixel_depth;
uint8_t f_header_image_descriptor;
bool f_opaque;
uint32_t f_scratch_bytes_per_pixel;
uint32_t f_src_bytes_per_pixel;
uint32_t f_src_pixfmt;
uint64_t f_frame_config_io_position;
wuffs_base__pixel_swizzler f_swizzler;
uint32_t p_decode_image_config[1];
uint32_t p_decode_frame_config[1];
uint32_t p_decode_frame[1];
} private_impl;
struct {
uint8_t f_dst_palette[1024];
uint8_t f_src_palette[1024];
uint8_t f_scratch[4];
struct {
uint32_t v_i;
uint64_t scratch;
} s_decode_image_config[1];
struct {
uint64_t v_dst_bytes_per_pixel;
uint32_t v_dst_x;
uint32_t v_dst_y;
uint64_t v_mark;
uint32_t v_num_pixels32;
uint32_t v_lit_length;
uint32_t v_run_length;
uint64_t v_num_dst_bytes;
uint64_t scratch;
} s_decode_frame[1];
} private_data;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_tga__decoder, decltype(&free)>;
// On failure, the alloc_etc functions return nullptr. They don't throw.
static inline unique_ptr
alloc() {
return unique_ptr(wuffs_tga__decoder__alloc(), &free);
}
static inline wuffs_base__image_decoder::unique_ptr
alloc_as__wuffs_base__image_decoder() {
return wuffs_base__image_decoder::unique_ptr(
wuffs_tga__decoder__alloc_as__wuffs_base__image_decoder(), &free);
}
#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
// Disallow constructing or copying an object via standard C++ mechanisms,
// e.g. the "new" operator, as this struct is intentionally opaque. Its total
// size and field layout is not part of the public, stable, memory-safe API.
// Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
// call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
// their first argument) rather than tweaking bar.private_impl.qux fields.
//
// In C, we can just leave wuffs_foo__bar as an incomplete type (unless
// WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
// order to provide convenience methods. These forward on "this", so that you
// can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
wuffs_tga__decoder__struct() = delete;
wuffs_tga__decoder__struct(const wuffs_tga__decoder__struct&) = delete;
wuffs_tga__decoder__struct& operator=(
const wuffs_tga__decoder__struct&) = delete;
#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
#if !defined(WUFFS_IMPLEMENTATION)
// As above, the size of the struct is not part of the public API, and unless
// WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
// allocated, not stack allocated. Its size is not intended to be known at
// compile time, but it is unfortunately divulged as a side effect of
// defining C++ convenience methods. Use "sizeof__T()", calling the function,
// instead of "sizeof T", invoking the operator. To make the two values
// different, so that passing the latter will be rejected by the initialize
// function, we add an arbitrary amount of dead weight.
uint8_t dead_weight[123000000]; // 123 MB.
#endif // !defined(WUFFS_IMPLEMENTATION)
inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
initialize(
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options) {
return wuffs_tga__decoder__initialize(
this, sizeof_star_self, wuffs_version, options);
}
inline wuffs_base__image_decoder*
upcast_as__wuffs_base__image_decoder() {
return (wuffs_base__image_decoder*)this;
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_tga__decoder__set_quirk_enabled(this, a_quirk, a_enabled);
}
inline wuffs_base__status
decode_image_config(
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src) {
return wuffs_tga__decoder__decode_image_config(this, a_dst, a_src);
}
inline wuffs_base__status
decode_frame_config(
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src) {
return wuffs_tga__decoder__decode_frame_config(this, a_dst, a_src);
}
inline wuffs_base__status
decode_frame(
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts) {
return wuffs_tga__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
}
inline wuffs_base__rect_ie_u32
frame_dirty_rect() const {
return wuffs_tga__decoder__frame_dirty_rect(this);
}
inline uint32_t
num_animation_loops() const {
return wuffs_tga__decoder__num_animation_loops(this);
}
inline uint64_t
num_decoded_frame_configs() const {
return wuffs_tga__decoder__num_decoded_frame_configs(this);
}
inline uint64_t
num_decoded_frames() const {
return wuffs_tga__decoder__num_decoded_frames(this);
}
inline wuffs_base__status
restart_frame(
uint64_t a_index,
uint64_t a_io_position) {
return wuffs_tga__decoder__restart_frame(this, a_index, a_io_position);
}
inline wuffs_base__empty_struct
set_report_metadata(
uint32_t a_fourcc,
bool a_report) {
return wuffs_tga__decoder__set_report_metadata(this, a_fourcc, a_report);
}
inline wuffs_base__status
tell_me_more(
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src) {
return wuffs_tga__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_tga__decoder__workbuf_len(this);
}
#endif // __cplusplus
}; // struct wuffs_tga__decoder__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
// ---------------- Status Codes
extern const char wuffs_wbmp__error__bad_header[];
// ---------------- Public Consts
#define WUFFS_WBMP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0
// ---------------- Struct Declarations
typedef struct wuffs_wbmp__decoder__struct wuffs_wbmp__decoder;
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Public Initializer Prototypes
// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self,
// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)".
//
// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version.
// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options.
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_wbmp__decoder__initialize(
wuffs_wbmp__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options);
size_t
sizeof__wuffs_wbmp__decoder();
// ---------------- Allocs
// These functions allocate and initialize Wuffs structs. They return NULL if
// memory allocation fails. If they return non-NULL, there is no need to call
// wuffs_foo__bar__initialize, but the caller is responsible for eventually
// calling free on the returned pointer. That pointer is effectively a C++
// std::unique_ptr<T, decltype(&free)>.
wuffs_wbmp__decoder*
wuffs_wbmp__decoder__alloc();
static inline wuffs_base__image_decoder*
wuffs_wbmp__decoder__alloc_as__wuffs_base__image_decoder() {
return (wuffs_base__image_decoder*)(wuffs_wbmp__decoder__alloc());
}
// ---------------- Upcasts
static inline wuffs_base__image_decoder*
wuffs_wbmp__decoder__upcast_as__wuffs_base__image_decoder(
wuffs_wbmp__decoder* p) {
return (wuffs_base__image_decoder*)p;
}
// ---------------- Public Function Prototypes
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_wbmp__decoder__set_quirk_enabled(
wuffs_wbmp__decoder* self,
uint32_t a_quirk,
bool a_enabled);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_wbmp__decoder__decode_image_config(
wuffs_wbmp__decoder* self,
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_wbmp__decoder__decode_frame_config(
wuffs_wbmp__decoder* self,
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_wbmp__decoder__decode_frame(
wuffs_wbmp__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts);
WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
wuffs_wbmp__decoder__frame_dirty_rect(
const wuffs_wbmp__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_wbmp__decoder__num_animation_loops(
const wuffs_wbmp__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_wbmp__decoder__num_decoded_frame_configs(
const wuffs_wbmp__decoder* self);
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_wbmp__decoder__num_decoded_frames(
const wuffs_wbmp__decoder* self);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_wbmp__decoder__restart_frame(
wuffs_wbmp__decoder* self,
uint64_t a_index,
uint64_t a_io_position);
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_wbmp__decoder__set_report_metadata(
wuffs_wbmp__decoder* self,
uint32_t a_fourcc,
bool a_report);
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_wbmp__decoder__tell_me_more(
wuffs_wbmp__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src);
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_wbmp__decoder__workbuf_len(
const wuffs_wbmp__decoder* self);
#ifdef __cplusplus
} // extern "C"
#endif
// ---------------- Struct Definitions
// These structs' fields, and the sizeof them, are private implementation
// details that aren't guaranteed to be stable across Wuffs versions.
//
// See https://en.wikipedia.org/wiki/Opaque_pointer#C
#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
struct wuffs_wbmp__decoder__struct {
// Do not access the private_impl's or private_data's fields directly. There
// is no API/ABI compatibility or safety guarantee if you do so. Instead, use
// the wuffs_foo__bar__baz functions.
//
// It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct
// can be stack allocated when WUFFS_IMPLEMENTATION is defined.
struct {
uint32_t magic;
uint32_t active_coroutine;
wuffs_base__vtable vtable_for__wuffs_base__image_decoder;
wuffs_base__vtable null_vtable;
uint32_t f_width;
uint32_t f_height;
uint8_t f_call_sequence;
uint64_t f_frame_config_io_position;
wuffs_base__pixel_swizzler f_swizzler;
uint32_t p_decode_image_config[1];
uint32_t p_decode_frame_config[1];
uint32_t p_decode_frame[1];
} private_impl;
struct {
struct {
uint32_t v_i;
uint32_t v_x32;
} s_decode_image_config[1];
struct {
uint64_t v_dst_bytes_per_pixel;
uint32_t v_dst_x;
uint32_t v_dst_y;
uint8_t v_src[1];
uint8_t v_c;
} s_decode_frame[1];
} private_data;
#ifdef __cplusplus
#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
using unique_ptr = std::unique_ptr<wuffs_wbmp__decoder, decltype(&free)>;
// On failure, the alloc_etc functions return nullptr. They don't throw.
static inline unique_ptr
alloc() {
return unique_ptr(wuffs_wbmp__decoder__alloc(), &free);
}
static inline wuffs_base__image_decoder::unique_ptr
alloc_as__wuffs_base__image_decoder() {
return wuffs_base__image_decoder::unique_ptr(
wuffs_wbmp__decoder__alloc_as__wuffs_base__image_decoder(), &free);
}
#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
// Disallow constructing or copying an object via standard C++ mechanisms,
// e.g. the "new" operator, as this struct is intentionally opaque. Its total
// size and field layout is not part of the public, stable, memory-safe API.
// Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and
// call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as
// their first argument) rather than tweaking bar.private_impl.qux fields.
//
// In C, we can just leave wuffs_foo__bar as an incomplete type (unless
// WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in
// order to provide convenience methods. These forward on "this", so that you
// can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)".
wuffs_wbmp__decoder__struct() = delete;
wuffs_wbmp__decoder__struct(const wuffs_wbmp__decoder__struct&) = delete;
wuffs_wbmp__decoder__struct& operator=(
const wuffs_wbmp__decoder__struct&) = delete;
#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION)
#if !defined(WUFFS_IMPLEMENTATION)
// As above, the size of the struct is not part of the public API, and unless
// WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap
// allocated, not stack allocated. Its size is not intended to be known at
// compile time, but it is unfortunately divulged as a side effect of
// defining C++ convenience methods. Use "sizeof__T()", calling the function,
// instead of "sizeof T", invoking the operator. To make the two values
// different, so that passing the latter will be rejected by the initialize
// function, we add an arbitrary amount of dead weight.
uint8_t dead_weight[123000000]; // 123 MB.
#endif // !defined(WUFFS_IMPLEMENTATION)
inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
initialize(
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options) {
return wuffs_wbmp__decoder__initialize(
this, sizeof_star_self, wuffs_version, options);
}
inline wuffs_base__image_decoder*
upcast_as__wuffs_base__image_decoder() {
return (wuffs_base__image_decoder*)this;
}
inline wuffs_base__empty_struct
set_quirk_enabled(
uint32_t a_quirk,
bool a_enabled) {
return wuffs_wbmp__decoder__set_quirk_enabled(this, a_quirk, a_enabled);
}
inline wuffs_base__status
decode_image_config(
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src) {
return wuffs_wbmp__decoder__decode_image_config(this, a_dst, a_src);
}
inline wuffs_base__status
decode_frame_config(
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src) {
return wuffs_wbmp__decoder__decode_frame_config(this, a_dst, a_src);
}
inline wuffs_base__status
decode_frame(
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts) {
return wuffs_wbmp__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts);
}
inline wuffs_base__rect_ie_u32
frame_dirty_rect() const {
return wuffs_wbmp__decoder__frame_dirty_rect(this);
}
inline uint32_t
num_animation_loops() const {
return wuffs_wbmp__decoder__num_animation_loops(this);
}
inline uint64_t
num_decoded_frame_configs() const {
return wuffs_wbmp__decoder__num_decoded_frame_configs(this);
}
inline uint64_t
num_decoded_frames() const {
return wuffs_wbmp__decoder__num_decoded_frames(this);
}
inline wuffs_base__status
restart_frame(
uint64_t a_index,
uint64_t a_io_position) {
return wuffs_wbmp__decoder__restart_frame(this, a_index, a_io_position);
}
inline wuffs_base__empty_struct
set_report_metadata(
uint32_t a_fourcc,
bool a_report) {
return wuffs_wbmp__decoder__set_report_metadata(this, a_fourcc, a_report);
}
inline wuffs_base__status
tell_me_more(
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src) {
return wuffs_wbmp__decoder__tell_me_more(this, a_dst, a_minfo, a_src);
}
inline wuffs_base__range_ii_u64
workbuf_len() const {
return wuffs_wbmp__decoder__workbuf_len(this);
}
#endif // __cplusplus
}; // struct wuffs_wbmp__decoder__struct
#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION)
#if defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
// ---------------- Auxiliary - Base
// Auxiliary code is discussed at
// https://github.com/google/wuffs/blob/main/doc/note/auxiliary-code.md
#include <stdio.h>
#include <string>
namespace wuffs_aux {
using IOBuffer = wuffs_base__io_buffer;
// MemOwner represents ownership of some memory. Dynamically allocated memory
// (e.g. from malloc or new) is typically paired with free or delete, invoked
// when the std::unique_ptr is destroyed. Statically allocated memory might use
// MemOwner(nullptr, &free), even if that statically allocated memory is not
// nullptr, since calling free(nullptr) is a no-op.
using MemOwner = std::unique_ptr<void, decltype(&free)>;
namespace sync_io {
// --------
// DynIOBuffer is an IOBuffer that is backed by a dynamically sized byte array.
// It owns that backing array and will free it in its destructor.
//
// The array size can be explicitly extended (by calling the grow method) but,
// unlike a C++ std::vector, there is no implicit extension (e.g. by calling
// std::vector::insert) and its maximum size is capped by the max_incl
// constructor argument.
//
// It contains an IOBuffer-typed field whose reader side provides access to
// previously written bytes and whose writer side provides access to the
// allocated but not-yet-written-to slack space. For Go programmers, this slack
// space is roughly analogous to the s[len(s):cap(s)] space of a slice s.
class DynIOBuffer {
public:
enum GrowResult {
OK = 0,
FailedMaxInclExceeded = 1,
FailedOutOfMemory = 2,
};
// m_buf holds the dynamically sized byte array and its read/write indexes:
// - m_buf.meta.wi is roughly analogous to a Go slice's length.
// - m_buf.data.len is roughly analogous to a Go slice's capacity. It is
// also equal to the m_buf.data.ptr malloc/realloc size.
//
// Users should not modify the m_buf.data.ptr or m_buf.data.len fields (as
// they are conceptually private to this class), but they can modify the
// bytes referenced by that pointer-length pair (e.g. compactions).
IOBuffer m_buf;
// m_max_incl is an inclusive upper bound on the backing array size.
const uint64_t m_max_incl;
// Constructor and destructor.
explicit DynIOBuffer(uint64_t max_incl);
~DynIOBuffer();
// Drop frees the byte array and resets m_buf. The DynIOBuffer can still be
// used after a drop call. It just restarts from zero.
void drop();
// grow ensures that the byte array size is at least min_incl and at most
// max_incl. It returns FailedMaxInclExceeded if that would require
// allocating more than max_incl bytes, including the case where (min_incl >
// max_incl). It returns FailedOutOfMemory if memory allocation failed.
GrowResult grow(uint64_t min_incl);
private:
// Delete the copy and assign constructors.
DynIOBuffer(const DynIOBuffer&) = delete;
DynIOBuffer& operator=(const DynIOBuffer&) = delete;
static uint64_t round_up(uint64_t min_incl, uint64_t max_incl);
};
// --------
class Input {
public:
virtual ~Input();
virtual IOBuffer* BringsItsOwnIOBuffer();
virtual std::string CopyIn(IOBuffer* dst) = 0;
};
// --------
// FileInput is an Input that reads from a file source.
//
// It does not take responsibility for closing the file when done.
class FileInput : public Input {
public:
FileInput(FILE* f);
virtual std::string CopyIn(IOBuffer* dst);
private:
FILE* m_f;
// Delete the copy and assign constructors.
FileInput(const FileInput&) = delete;
FileInput& operator=(const FileInput&) = delete;
};
// --------
// MemoryInput is an Input that reads from an in-memory source.
//
// It does not take responsibility for freeing the memory when done.
class MemoryInput : public Input {
public:
MemoryInput(const char* ptr, size_t len);
MemoryInput(const uint8_t* ptr, size_t len);
virtual IOBuffer* BringsItsOwnIOBuffer();
virtual std::string CopyIn(IOBuffer* dst);
private:
IOBuffer m_io;
// Delete the copy and assign constructors.
MemoryInput(const MemoryInput&) = delete;
MemoryInput& operator=(const MemoryInput&) = delete;
};
// --------
} // namespace sync_io
} // namespace wuffs_aux
// ---------------- Auxiliary - CBOR
namespace wuffs_aux {
struct DecodeCborResult {
DecodeCborResult(std::string&& error_message0, uint64_t cursor_position0);
std::string error_message;
uint64_t cursor_position;
};
class DecodeCborCallbacks {
public:
virtual ~DecodeCborCallbacks();
// AppendXxx are called for leaf nodes: literals, numbers, strings, etc.
virtual std::string AppendNull() = 0;
virtual std::string AppendUndefined() = 0;
virtual std::string AppendBool(bool val) = 0;
virtual std::string AppendF64(double val) = 0;
virtual std::string AppendI64(int64_t val) = 0;
virtual std::string AppendU64(uint64_t val) = 0;
virtual std::string AppendByteString(std::string&& val) = 0;
virtual std::string AppendTextString(std::string&& val) = 0;
virtual std::string AppendMinus1MinusX(uint64_t val) = 0;
virtual std::string AppendCborSimpleValue(uint8_t val) = 0;
virtual std::string AppendCborTag(uint64_t val) = 0;
// Push and Pop are called for container nodes: CBOR arrays (lists) and CBOR
// maps (dictionaries).
//
// The flags bits combine exactly one of:
// - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE
// - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST
// - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT
// and exactly one of:
// - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE
// - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST
// - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT
virtual std::string Push(uint32_t flags) = 0;
virtual std::string Pop(uint32_t flags) = 0;
// Done is always the last Callback method called by DecodeCbor, whether or
// not parsing the input as CBOR encountered an error. Even when successful,
// trailing data may remain in input and buffer.
//
// Do not keep a reference to buffer or buffer.data.ptr after Done returns,
// as DecodeCbor may then de-allocate the backing array.
//
// The default Done implementation is a no-op.
virtual void //
Done(DecodeCborResult& result, sync_io::Input& input, IOBuffer& buffer);
};
// The FooArgBar types add structure to Foo's optional arguments. They wrap
// inner representations for several reasons:
// - It provides a home for the DefaultValue static method, for Foo callers
// that want to override some but not all optional arguments.
// - It provides the "Bar" name at Foo call sites, which can help self-
// document Foo calls with many arguemnts.
// - It provides some type safety against accidentally transposing or omitting
// adjacent fundamentally-numeric-typed optional arguments.
// DecodeCborArgQuirks wraps an optional argument to DecodeCbor.
struct DecodeCborArgQuirks {
explicit DecodeCborArgQuirks(wuffs_base__slice_u32 repr0);
explicit DecodeCborArgQuirks(uint32_t* ptr, size_t len);
// DefaultValue returns an empty slice.
static DecodeCborArgQuirks DefaultValue();
wuffs_base__slice_u32 repr;
};
// DecodeCbor calls callbacks based on the CBOR-formatted data in input.
//
// On success, the returned error_message is empty and cursor_position counts
// the number of bytes consumed. On failure, error_message is non-empty and
// cursor_position is the location of the error. That error may be a content
// error (invalid CBOR) or an input error (e.g. network failure).
DecodeCborResult //
DecodeCbor(DecodeCborCallbacks& callbacks,
sync_io::Input& input,
DecodeCborArgQuirks quirks = DecodeCborArgQuirks::DefaultValue());
} // namespace wuffs_aux
// ---------------- Auxiliary - Image
namespace wuffs_aux {
struct DecodeImageResult {
DecodeImageResult(MemOwner&& pixbuf_mem_owner0,
wuffs_base__pixel_buffer pixbuf0,
std::string&& error_message0);
DecodeImageResult(std::string&& error_message0);
MemOwner pixbuf_mem_owner;
wuffs_base__pixel_buffer pixbuf;
std::string error_message;
};
// DecodeImageCallbacks are the callbacks given to DecodeImage. They are always
// called in this order:
// 1. SelectDecoder
// 2. HandleMetadata
// 3. SelectPixfmt
// 4. AllocPixbuf
// 5. AllocWorkbuf
// 6. Done
//
// It may return early - the third callback might not be invoked if the second
// one fails - but the final callback (Done) is always invoked.
class DecodeImageCallbacks {
public:
// AllocPixbufResult holds a memory allocation (the result of malloc or new,
// a statically allocated pointer, etc), or an error message. The memory is
// de-allocated when mem_owner goes out of scope and is destroyed.
struct AllocPixbufResult {
AllocPixbufResult(MemOwner&& mem_owner0, wuffs_base__pixel_buffer pixbuf0);
AllocPixbufResult(std::string&& error_message0);
MemOwner mem_owner;
wuffs_base__pixel_buffer pixbuf;
std::string error_message;
};
// AllocWorkbufResult holds a memory allocation (the result of malloc or new,
// a statically allocated pointer, etc), or an error message. The memory is
// de-allocated when mem_owner goes out of scope and is destroyed.
struct AllocWorkbufResult {
AllocWorkbufResult(MemOwner&& mem_owner0, wuffs_base__slice_u8 workbuf0);
AllocWorkbufResult(std::string&& error_message0);
MemOwner mem_owner;
wuffs_base__slice_u8 workbuf;
std::string error_message;
};
virtual ~DecodeImageCallbacks();
// SelectDecoder returns the image decoder for the input data's file format.
// Returning a nullptr means failure (DecodeImage_UnsupportedImageFormat).
//
// Common formats will have a FourCC value in the range [1 ..= 0x7FFF_FFFF],
// such as WUFFS_BASE__FOURCC__JPEG. A zero FourCC value means that Wuffs'
// standard library did not recognize the image format but if SelectDecoder
// was overridden, it may examine the input data's starting bytes and still
// provide its own image decoder, e.g. for an exotic image file format that's
// not in Wuffs' standard library. The prefix_etc fields have the same
// meaning as wuffs_base__magic_number_guess_fourcc arguments. SelectDecoder
// implementations should not modify prefix_data's contents.
//
// SelectDecoder might be called more than once, since some image file
// formats can wrap others. For example, a nominal BMP file can actually
// contain a JPEG or a PNG.
//
// The default SelectDecoder accepts the FOURCC codes listed below. For
// modular builds (i.e. when #define'ing WUFFS_CONFIG__MODULES), acceptance
// of the ETC file format is optional (for each value of ETC) and depends on
// the corresponding module to be enabled at compile time (i.e. #define'ing
// WUFFS_CONFIG__MODULE__ETC).
// - WUFFS_BASE__FOURCC__BMP
// - WUFFS_BASE__FOURCC__GIF
// - WUFFS_BASE__FOURCC__NIE
// - WUFFS_BASE__FOURCC__PNG
// - WUFFS_BASE__FOURCC__TGA
// - WUFFS_BASE__FOURCC__WBMP
virtual wuffs_base__image_decoder::unique_ptr //
SelectDecoder(uint32_t fourcc,
wuffs_base__slice_u8 prefix_data,
bool prefix_closed);
// HandleMetadata acknowledges image metadata. minfo.flavor will be one of:
// - WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_PASSTHROUGH
// - WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_PARSED
// If it is ETC__METADATA_RAW_ETC then raw contains the metadata bytes. Those
// bytes should not be retained beyond the the HandleMetadata call.
//
// minfo.metadata__fourcc() will typically match one of the
// DecodeImageArgFlags bits. For example, if (REPORT_METADATA_CHRM |
// REPORT_METADATA_GAMA) was passed to DecodeImage then the metadata FourCC
// will be either WUFFS_BASE__FOURCC__CHRM or WUFFS_BASE__FOURCC__GAMA.
//
// It returns an error message, or an empty string on success.
virtual std::string //
HandleMetadata(const wuffs_base__more_information& minfo,
wuffs_base__slice_u8 raw);
// SelectPixfmt returns the destination pixel format for AllocPixbuf. It
// should return wuffs_base__make_pixel_format(etc) called with one of:
// - WUFFS_BASE__PIXEL_FORMAT__BGR_565
// - WUFFS_BASE__PIXEL_FORMAT__BGR
// - WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL
// - WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE
// - WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL
// - WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL
// - WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL
// or return image_config.pixcfg.pixel_format(). The latter means to use the
// image file's natural pixel format. For example, GIF images' natural pixel
// format is an indexed one.
//
// Returning otherwise means failure (DecodeImage_UnsupportedPixelFormat).
//
// The default SelectPixfmt implementation returns
// wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL) which
// is 4 bytes per pixel (8 bits per channel ร— 4 channels).
virtual wuffs_base__pixel_format //
SelectPixfmt(const wuffs_base__image_config& image_config);
// AllocPixbuf allocates the pixel buffer.
//
// allow_uninitialized_memory will be true if a valid background_color was
// passed to DecodeImage, since the pixel buffer's contents will be
// overwritten with that color after AllocPixbuf returns.
//
// The default AllocPixbuf implementation allocates either uninitialized or
// zeroed memory. Zeroed memory typically corresponds to filling with opaque
// black or transparent black, depending on the pixel format.
virtual AllocPixbufResult //
AllocPixbuf(const wuffs_base__image_config& image_config,
bool allow_uninitialized_memory);
// AllocWorkbuf allocates the work buffer. The allocated buffer's length
// should be at least len_range.min_incl, but larger allocations (up to
// len_range.max_incl) may have better performance (by using more memory).
//
// The default AllocWorkbuf implementation allocates len_range.max_incl bytes
// of either uninitialized or zeroed memory.
virtual AllocWorkbufResult //
AllocWorkbuf(wuffs_base__range_ii_u64 len_range,
bool allow_uninitialized_memory);
// Done is always the last Callback method called by DecodeImage, whether or
// not parsing the input encountered an error. Even when successful, trailing
// data may remain in input and buffer.
//
// The image_decoder is the one returned by SelectDecoder (if SelectDecoder
// was successful), or a no-op unique_ptr otherwise. Like any unique_ptr,
// ownership moves to the Done implementation.
//
// Do not keep a reference to buffer or buffer.data.ptr after Done returns,
// as DecodeImage may then de-allocate the backing array.
//
// The default Done implementation is a no-op, other than running the
// image_decoder unique_ptr destructor.
virtual void //
Done(DecodeImageResult& result,
sync_io::Input& input,
IOBuffer& buffer,
wuffs_base__image_decoder::unique_ptr image_decoder);
};
extern const char DecodeImage_BufferIsTooShort[];
extern const char DecodeImage_MaxInclDimensionExceeded[];
extern const char DecodeImage_MaxInclMetadataLengthExceeded[];
extern const char DecodeImage_OutOfMemory[];
extern const char DecodeImage_UnexpectedEndOfFile[];
extern const char DecodeImage_UnsupportedImageFormat[];
extern const char DecodeImage_UnsupportedMetadata[];
extern const char DecodeImage_UnsupportedPixelBlend[];
extern const char DecodeImage_UnsupportedPixelConfiguration[];
extern const char DecodeImage_UnsupportedPixelFormat[];
// The FooArgBar types add structure to Foo's optional arguments. They wrap
// inner representations for several reasons:
// - It provides a home for the DefaultValue static method, for Foo callers
// that want to override some but not all optional arguments.
// - It provides the "Bar" name at Foo call sites, which can help self-
// document Foo calls with many arguemnts.
// - It provides some type safety against accidentally transposing or omitting
// adjacent fundamentally-numeric-typed optional arguments.
// DecodeImageArgQuirks wraps an optional argument to DecodeImage.
struct DecodeImageArgQuirks {
explicit DecodeImageArgQuirks(wuffs_base__slice_u32 repr0);
explicit DecodeImageArgQuirks(uint32_t* ptr, size_t len);
// DefaultValue returns an empty slice.
static DecodeImageArgQuirks DefaultValue();
wuffs_base__slice_u32 repr;
};
// DecodeImageArgFlags wraps an optional argument to DecodeImage.
struct DecodeImageArgFlags {
explicit DecodeImageArgFlags(uint64_t repr0);
// DefaultValue returns 0.
static DecodeImageArgFlags DefaultValue();
// TODO: support all of the REPORT_METADATA_ETC flags, not just CHRM, EXIF,
// GAMA, ICCP, KVP, SRGB and XMP.
// Background Color.
static constexpr uint64_t REPORT_METADATA_BGCL = 0x0001;
// Primary Chromaticities and White Point.
static constexpr uint64_t REPORT_METADATA_CHRM = 0x0002;
// Exchangeable Image File Format.
static constexpr uint64_t REPORT_METADATA_EXIF = 0x0004;
// Gamma Correction.
static constexpr uint64_t REPORT_METADATA_GAMA = 0x0008;
// International Color Consortium Profile.
static constexpr uint64_t REPORT_METADATA_ICCP = 0x0010;
// Key-Value Pair.
//
// For PNG files, this includes iTXt, tEXt and zTXt chunks. In the
// HandleMetadata callback, the raw argument contains UTF-8 strings.
static constexpr uint64_t REPORT_METADATA_KVP = 0x0020;
// Modification Time.
static constexpr uint64_t REPORT_METADATA_MTIM = 0x0040;
// Offset (2-Dimensional).
static constexpr uint64_t REPORT_METADATA_OFS2 = 0x0080;
// Physical Dimensions.
static constexpr uint64_t REPORT_METADATA_PHYD = 0x0100;
// Standard Red Green Blue (Rendering Intent).
static constexpr uint64_t REPORT_METADATA_SRGB = 0x0200;
// Extensible Metadata Platform.
static constexpr uint64_t REPORT_METADATA_XMP = 0x0400;
uint64_t repr;
};
// DecodeImageArgPixelBlend wraps an optional argument to DecodeImage.
struct DecodeImageArgPixelBlend {
explicit DecodeImageArgPixelBlend(wuffs_base__pixel_blend repr0);
// DefaultValue returns WUFFS_BASE__PIXEL_BLEND__SRC.
static DecodeImageArgPixelBlend DefaultValue();
wuffs_base__pixel_blend repr;
};
// DecodeImageArgBackgroundColor wraps an optional argument to DecodeImage.
struct DecodeImageArgBackgroundColor {
explicit DecodeImageArgBackgroundColor(
wuffs_base__color_u32_argb_premul repr0);
// DefaultValue returns 1, an invalid wuffs_base__color_u32_argb_premul.
static DecodeImageArgBackgroundColor DefaultValue();
wuffs_base__color_u32_argb_premul repr;
};
// DecodeImageArgMaxInclDimension wraps an optional argument to DecodeImage.
struct DecodeImageArgMaxInclDimension {
explicit DecodeImageArgMaxInclDimension(uint32_t repr0);
// DefaultValue returns 1048575 = 0x000F_FFFF, more than 1 million pixels.
static DecodeImageArgMaxInclDimension DefaultValue();
uint32_t repr;
};
// DecodeImageArgMaxInclMetadataLength wraps an optional argument to
// DecodeImage.
struct DecodeImageArgMaxInclMetadataLength {
explicit DecodeImageArgMaxInclMetadataLength(uint64_t repr0);
// DefaultValue returns 16777215 = 0x00FF_FFFF, one less than 16 MiB.
static DecodeImageArgMaxInclMetadataLength DefaultValue();
uint64_t repr;
};
// DecodeImage decodes the image data in input. A variety of image file formats
// can be decoded, depending on what callbacks.SelectDecoder returns.
//
// For animated formats, only the first frame is returned, since the API is
// simpler for synchronous I/O and having DecodeImage only return when
// completely done, but rendering animation often involves handling other
// events in between animation frames. To decode multiple frames of animated
// images, or for asynchronous I/O (e.g. when decoding an image streamed over
// the network), use Wuffs' lower level C API instead of its higher level,
// simplified C++ API (the wuffs_aux API).
//
// The DecodeImageResult's fields depend on whether decoding succeeded:
// - On total success, the error_message is empty and pixbuf.pixcfg.is_valid()
// is true.
// - On partial success (e.g. the input file was truncated but we are still
// able to decode some of the pixels), error_message is non-empty but
// pixbuf.pixcfg.is_valid() is still true. It is up to the caller whether to
// accept or reject partial success.
// - On failure, the error_message is non_empty and pixbuf.pixcfg.is_valid()
// is false.
//
// The callbacks allocate the pixel buffer memory and work buffer memory. On
// success, pixel buffer memory ownership is passed to the DecodeImage caller
// as the returned pixbuf_mem_owner. Regardless of success or failure, the work
// buffer memory is deleted.
//
// The pixel_blend (one of the constants listed below) determines how to
// composite the decoded image over the pixel buffer's original pixels (as
// returned by callbacks.AllocPixbuf):
// - WUFFS_BASE__PIXEL_BLEND__SRC
// - WUFFS_BASE__PIXEL_BLEND__SRC_OVER
//
// The background_color is used to fill the pixel buffer after
// callbacks.AllocPixbuf returns, if it is valid in the
// wuffs_base__color_u32_argb_premul__is_valid sense. The default value,
// 0x0000_0001, is not valid since its Blue channel value (0x01) is greater
// than its Alpha channel value (0x00). A valid background_color will typically
// be overwritten when pixel_blend is WUFFS_BASE__PIXEL_BLEND__SRC, but might
// still be visible on partial (not total) success or when pixel_blend is
// WUFFS_BASE__PIXEL_BLEND__SRC_OVER and the decoded image is not fully opaque.
//
// Decoding fails (with DecodeImage_MaxInclDimensionExceeded) if the image's
// width or height is greater than max_incl_dimension or if any opted-in (via
// flags bits) metadata is longer than max_incl_metadata_length.
DecodeImageResult //
DecodeImage(DecodeImageCallbacks& callbacks,
sync_io::Input& input,
DecodeImageArgQuirks quirks = DecodeImageArgQuirks::DefaultValue(),
DecodeImageArgFlags flags = DecodeImageArgFlags::DefaultValue(),
DecodeImageArgPixelBlend pixel_blend =
DecodeImageArgPixelBlend::DefaultValue(),
DecodeImageArgBackgroundColor background_color =
DecodeImageArgBackgroundColor::DefaultValue(),
DecodeImageArgMaxInclDimension max_incl_dimension =
DecodeImageArgMaxInclDimension::DefaultValue(),
DecodeImageArgMaxInclMetadataLength max_incl_metadata_length =
DecodeImageArgMaxInclMetadataLength::DefaultValue());
} // namespace wuffs_aux
// ---------------- Auxiliary - JSON
namespace wuffs_aux {
struct DecodeJsonResult {
DecodeJsonResult(std::string&& error_message0, uint64_t cursor_position0);
std::string error_message;
uint64_t cursor_position;
};
class DecodeJsonCallbacks {
public:
virtual ~DecodeJsonCallbacks();
// AppendXxx are called for leaf nodes: literals, numbers and strings. For
// strings, the Callbacks implementation is responsible for tracking map keys
// versus other values.
virtual std::string AppendNull() = 0;
virtual std::string AppendBool(bool val) = 0;
virtual std::string AppendF64(double val) = 0;
virtual std::string AppendI64(int64_t val) = 0;
virtual std::string AppendTextString(std::string&& val) = 0;
// Push and Pop are called for container nodes: JSON arrays (lists) and JSON
// objects (dictionaries).
//
// The flags bits combine exactly one of:
// - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE
// - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST
// - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT
// and exactly one of:
// - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE
// - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST
// - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT
virtual std::string Push(uint32_t flags) = 0;
virtual std::string Pop(uint32_t flags) = 0;
// Done is always the last Callback method called by DecodeJson, whether or
// not parsing the input as JSON encountered an error. Even when successful,
// trailing data may remain in input and buffer. See "Unintuitive JSON
// Parsing" (https://nullprogram.com/blog/2019/12/28/) which discusses JSON
// parsing and when it stops.
//
// Do not keep a reference to buffer or buffer.data.ptr after Done returns,
// as DecodeJson may then de-allocate the backing array.
//
// The default Done implementation is a no-op.
virtual void //
Done(DecodeJsonResult& result, sync_io::Input& input, IOBuffer& buffer);
};
extern const char DecodeJson_BadJsonPointer[];
extern const char DecodeJson_NoMatch[];
// The FooArgBar types add structure to Foo's optional arguments. They wrap
// inner representations for several reasons:
// - It provides a home for the DefaultValue static method, for Foo callers
// that want to override some but not all optional arguments.
// - It provides the "Bar" name at Foo call sites, which can help self-
// document Foo calls with many arguemnts.
// - It provides some type safety against accidentally transposing or omitting
// adjacent fundamentally-numeric-typed optional arguments.
// DecodeJsonArgQuirks wraps an optional argument to DecodeJson.
struct DecodeJsonArgQuirks {
explicit DecodeJsonArgQuirks(wuffs_base__slice_u32 repr0);
explicit DecodeJsonArgQuirks(uint32_t* ptr, size_t len);
// DefaultValue returns an empty slice.
static DecodeJsonArgQuirks DefaultValue();
wuffs_base__slice_u32 repr;
};
// DecodeJsonArgJsonPointer wraps an optional argument to DecodeJson.
struct DecodeJsonArgJsonPointer {
explicit DecodeJsonArgJsonPointer(std::string repr0);
// DefaultValue returns an empty string.
static DecodeJsonArgJsonPointer DefaultValue();
std::string repr;
};
// DecodeJson calls callbacks based on the JSON-formatted data in input.
//
// On success, the returned error_message is empty and cursor_position counts
// the number of bytes consumed. On failure, error_message is non-empty and
// cursor_position is the location of the error. That error may be a content
// error (invalid JSON) or an input error (e.g. network failure).
//
// json_pointer is a query in the JSON Pointer (RFC 6901) syntax. The callbacks
// run for the input's sub-node that matches the query. DecodeJson_NoMatch is
// returned if no matching sub-node was found. The empty query matches the
// input's root node, consistent with JSON Pointer semantics.
//
// The JSON Pointer implementation is greedy: duplicate keys are not rejected
// but only the first match for each '/'-separated fragment is followed.
DecodeJsonResult //
DecodeJson(DecodeJsonCallbacks& callbacks,
sync_io::Input& input,
DecodeJsonArgQuirks quirks = DecodeJsonArgQuirks::DefaultValue(),
DecodeJsonArgJsonPointer json_pointer =
DecodeJsonArgJsonPointer::DefaultValue());
} // namespace wuffs_aux
#endif // defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
// โ€ผ WUFFS C HEADER ENDS HERE.
#ifdef WUFFS_IMPLEMENTATION
#ifdef __cplusplus
extern "C" {
#endif
// ---------------- Fundamentals
// WUFFS_BASE__MAGIC is a magic number to check that initializers are called.
// It's not foolproof, given C doesn't automatically zero memory before use,
// but it should catch 99.99% of cases.
//
// Its (non-zero) value is arbitrary, based on md5sum("wuffs").
#define WUFFS_BASE__MAGIC ((uint32_t)0x3CCB6C71)
// WUFFS_BASE__DISABLED is a magic number to indicate that a non-recoverable
// error was previously encountered.
//
// Its (non-zero) value is arbitrary, based on md5sum("disabled").
#define WUFFS_BASE__DISABLED ((uint32_t)0x075AE3D2)
// Use switch cases for coroutine suspension points, similar to the technique
// in https://www.chiark.greenend.org.uk/~sgtatham/coroutines.html
//
// The implicit fallthrough is intentional.
//
// We use trivial macros instead of an explicit assignment and case statement
// so that clang-format doesn't get confused by the unusual "case"s.
#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0 case 0:;
#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT(n) \
coro_susp_point = n; \
case n:;
#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(n) \
if (!status.repr) { \
goto ok; \
} else if (*status.repr != '$') { \
goto exit; \
} \
coro_susp_point = n; \
goto suspend; \
case n:;
// The "defined(__clang__)" isn't redundant. While vanilla clang defines
// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not.
#if defined(__GNUC__) || defined(__clang__)
#define WUFFS_BASE__LIKELY(expr) (__builtin_expect(!!(expr), 1))
#define WUFFS_BASE__UNLIKELY(expr) (__builtin_expect(!!(expr), 0))
#else
#define WUFFS_BASE__LIKELY(expr) (expr)
#define WUFFS_BASE__UNLIKELY(expr) (expr)
#endif
// --------
static inline wuffs_base__empty_struct //
wuffs_base__ignore_status(wuffs_base__status z) {
return wuffs_base__make_empty_struct();
}
static inline wuffs_base__status //
wuffs_base__status__ensure_not_a_suspension(wuffs_base__status z) {
if (z.repr && (*z.repr == '$')) {
z.repr = wuffs_base__error__cannot_return_a_suspension;
}
return z;
}
// --------
// wuffs_base__iterate_total_advance returns the exclusive pointer-offset at
// which iteration should stop. The overall slice has length total_len, each
// iteration's sub-slice has length iter_len and are placed iter_advance apart.
//
// The iter_advance may not be larger than iter_len. The iter_advance may be
// smaller than iter_len, in which case the sub-slices will overlap.
//
// The return value r satisfies ((0 <= r) && (r <= total_len)).
//
// For example, if total_len = 15, iter_len = 5 and iter_advance = 3, there are
// four iterations at offsets 0, 3, 6 and 9. This function returns 12.
//
// 0123456789012345
// [....]
// [....]
// [....]
// [....]
// $
// 0123456789012345
//
// For example, if total_len = 15, iter_len = 5 and iter_advance = 5, there are
// three iterations at offsets 0, 5 and 10. This function returns 15.
//
// 0123456789012345
// [....]
// [....]
// [....]
// $
// 0123456789012345
static inline size_t //
wuffs_base__iterate_total_advance(size_t total_len,
size_t iter_len,
size_t iter_advance) {
if (total_len >= iter_len) {
size_t n = total_len - iter_len;
return ((n / iter_advance) * iter_advance) + iter_advance;
}
return 0;
}
// ---------------- Numeric Types
extern const uint8_t wuffs_base__low_bits_mask__u8[8];
extern const uint16_t wuffs_base__low_bits_mask__u16[16];
extern const uint32_t wuffs_base__low_bits_mask__u32[32];
extern const uint64_t wuffs_base__low_bits_mask__u64[64];
#define WUFFS_BASE__LOW_BITS_MASK__U8(n) (wuffs_base__low_bits_mask__u8[n])
#define WUFFS_BASE__LOW_BITS_MASK__U16(n) (wuffs_base__low_bits_mask__u16[n])
#define WUFFS_BASE__LOW_BITS_MASK__U32(n) (wuffs_base__low_bits_mask__u32[n])
#define WUFFS_BASE__LOW_BITS_MASK__U64(n) (wuffs_base__low_bits_mask__u64[n])
// --------
static inline void //
wuffs_base__u8__sat_add_indirect(uint8_t* x, uint8_t y) {
*x = wuffs_base__u8__sat_add(*x, y);
}
static inline void //
wuffs_base__u8__sat_sub_indirect(uint8_t* x, uint8_t y) {
*x = wuffs_base__u8__sat_sub(*x, y);
}
static inline void //
wuffs_base__u16__sat_add_indirect(uint16_t* x, uint16_t y) {
*x = wuffs_base__u16__sat_add(*x, y);
}
static inline void //
wuffs_base__u16__sat_sub_indirect(uint16_t* x, uint16_t y) {
*x = wuffs_base__u16__sat_sub(*x, y);
}
static inline void //
wuffs_base__u32__sat_add_indirect(uint32_t* x, uint32_t y) {
*x = wuffs_base__u32__sat_add(*x, y);
}
static inline void //
wuffs_base__u32__sat_sub_indirect(uint32_t* x, uint32_t y) {
*x = wuffs_base__u32__sat_sub(*x, y);
}
static inline void //
wuffs_base__u64__sat_add_indirect(uint64_t* x, uint64_t y) {
*x = wuffs_base__u64__sat_add(*x, y);
}
static inline void //
wuffs_base__u64__sat_sub_indirect(uint64_t* x, uint64_t y) {
*x = wuffs_base__u64__sat_sub(*x, y);
}
// ---------------- Slices and Tables
// wuffs_base__slice_u8__prefix returns up to the first up_to bytes of s.
static inline wuffs_base__slice_u8 //
wuffs_base__slice_u8__prefix(wuffs_base__slice_u8 s, uint64_t up_to) {
if (((uint64_t)(s.len)) > up_to) {
s.len = ((size_t)up_to);
}
return s;
}
// wuffs_base__slice_u8__suffix returns up to the last up_to bytes of s.
static inline wuffs_base__slice_u8 //
wuffs_base__slice_u8__suffix(wuffs_base__slice_u8 s, uint64_t up_to) {
if (((uint64_t)(s.len)) > up_to) {
s.ptr += ((uint64_t)(s.len)) - up_to;
s.len = ((size_t)up_to);
}
return s;
}
// wuffs_base__slice_u8__copy_from_slice calls memmove(dst.ptr, src.ptr, len)
// where len is the minimum of dst.len and src.len.
//
// Passing a wuffs_base__slice_u8 with all fields NULL or zero (a valid, empty
// slice) is valid and results in a no-op.
static inline uint64_t //
wuffs_base__slice_u8__copy_from_slice(wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 src) {
size_t len = dst.len < src.len ? dst.len : src.len;
if (len > 0) {
memmove(dst.ptr, src.ptr, len);
}
return len;
}
// --------
static inline wuffs_base__slice_u8 //
wuffs_base__table_u8__row_u32(wuffs_base__table_u8 t, uint32_t y) {
if (y < t.height) {
return wuffs_base__make_slice_u8(t.ptr + (t.stride * y), t.width);
}
return wuffs_base__make_slice_u8(NULL, 0);
}
// ---------------- Slices and Tables (Utility)
#define wuffs_base__utility__empty_slice_u8 wuffs_base__empty_slice_u8
// ---------------- Ranges and Rects
static inline uint32_t //
wuffs_base__range_ii_u32__get_min_incl(const wuffs_base__range_ii_u32* r) {
return r->min_incl;
}
static inline uint32_t //
wuffs_base__range_ii_u32__get_max_incl(const wuffs_base__range_ii_u32* r) {
return r->max_incl;
}
static inline uint32_t //
wuffs_base__range_ie_u32__get_min_incl(const wuffs_base__range_ie_u32* r) {
return r->min_incl;
}
static inline uint32_t //
wuffs_base__range_ie_u32__get_max_excl(const wuffs_base__range_ie_u32* r) {
return r->max_excl;
}
static inline uint64_t //
wuffs_base__range_ii_u64__get_min_incl(const wuffs_base__range_ii_u64* r) {
return r->min_incl;
}
static inline uint64_t //
wuffs_base__range_ii_u64__get_max_incl(const wuffs_base__range_ii_u64* r) {
return r->max_incl;
}
static inline uint64_t //
wuffs_base__range_ie_u64__get_min_incl(const wuffs_base__range_ie_u64* r) {
return r->min_incl;
}
static inline uint64_t //
wuffs_base__range_ie_u64__get_max_excl(const wuffs_base__range_ie_u64* r) {
return r->max_excl;
}
// ---------------- Ranges and Rects (Utility)
#define wuffs_base__utility__empty_range_ii_u32 wuffs_base__empty_range_ii_u32
#define wuffs_base__utility__empty_range_ie_u32 wuffs_base__empty_range_ie_u32
#define wuffs_base__utility__empty_range_ii_u64 wuffs_base__empty_range_ii_u64
#define wuffs_base__utility__empty_range_ie_u64 wuffs_base__empty_range_ie_u64
#define wuffs_base__utility__empty_rect_ii_u32 wuffs_base__empty_rect_ii_u32
#define wuffs_base__utility__empty_rect_ie_u32 wuffs_base__empty_rect_ie_u32
#define wuffs_base__utility__make_range_ii_u32 wuffs_base__make_range_ii_u32
#define wuffs_base__utility__make_range_ie_u32 wuffs_base__make_range_ie_u32
#define wuffs_base__utility__make_range_ii_u64 wuffs_base__make_range_ii_u64
#define wuffs_base__utility__make_range_ie_u64 wuffs_base__make_range_ie_u64
#define wuffs_base__utility__make_rect_ii_u32 wuffs_base__make_rect_ii_u32
#define wuffs_base__utility__make_rect_ie_u32 wuffs_base__make_rect_ie_u32
// ---------------- I/O
static inline uint64_t //
wuffs_base__io__count_since(uint64_t mark, uint64_t index) {
if (index >= mark) {
return index - mark;
}
return 0;
}
// TODO: drop the "const" in "const uint8_t* ptr". Some though required about
// the base.io_reader.since method returning a mutable "slice base.u8".
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-qual"
#endif
static inline wuffs_base__slice_u8 //
wuffs_base__io__since(uint64_t mark, uint64_t index, const uint8_t* ptr) {
if (index >= mark) {
return wuffs_base__make_slice_u8(((uint8_t*)ptr) + mark,
((size_t)(index - mark)));
}
return wuffs_base__make_slice_u8(NULL, 0);
}
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
// --------
static inline void //
wuffs_base__io_reader__limit(const uint8_t** ptr_io2_r,
const uint8_t* iop_r,
uint64_t limit) {
if (((uint64_t)(*ptr_io2_r - iop_r)) > limit) {
*ptr_io2_r = iop_r + limit;
}
}
static inline uint32_t //
wuffs_base__io_reader__limited_copy_u32_to_slice(const uint8_t** ptr_iop_r,
const uint8_t* io2_r,
uint32_t length,
wuffs_base__slice_u8 dst) {
const uint8_t* iop_r = *ptr_iop_r;
size_t n = dst.len;
if (n > length) {
n = length;
}
if (n > ((size_t)(io2_r - iop_r))) {
n = (size_t)(io2_r - iop_r);
}
if (n > 0) {
memmove(dst.ptr, iop_r, n);
*ptr_iop_r += n;
}
return (uint32_t)(n);
}
// wuffs_base__io_reader__match7 returns whether the io_reader's upcoming bytes
// start with the given prefix (up to 7 bytes long). It is peek-like, not
// read-like, in that there are no side-effects.
//
// The low 3 bits of a hold the prefix length, n.
//
// The high 56 bits of a hold the prefix itself, in little-endian order. The
// first prefix byte is in bits 8..=15, the second prefix byte is in bits
// 16..=23, etc. The high (8 * (7 - n)) bits are ignored.
//
// There are three possible return values:
// - 0 means success.
// - 1 means inconclusive, equivalent to "$short read".
// - 2 means failure.
static inline uint32_t //
wuffs_base__io_reader__match7(const uint8_t* iop_r,
const uint8_t* io2_r,
wuffs_base__io_buffer* r,
uint64_t a) {
uint32_t n = a & 7;
a >>= 8;
if ((io2_r - iop_r) >= 8) {
uint64_t x = wuffs_base__peek_u64le__no_bounds_check(iop_r);
uint32_t shift = 8 * (8 - n);
return ((a << shift) == (x << shift)) ? 0 : 2;
}
for (; n > 0; n--) {
if (iop_r >= io2_r) {
return (r && r->meta.closed) ? 2 : 1;
} else if (*iop_r != ((uint8_t)(a))) {
return 2;
}
iop_r++;
a >>= 8;
}
return 0;
}
static inline wuffs_base__io_buffer* //
wuffs_base__io_reader__set(wuffs_base__io_buffer* b,
const uint8_t** ptr_iop_r,
const uint8_t** ptr_io0_r,
const uint8_t** ptr_io1_r,
const uint8_t** ptr_io2_r,
wuffs_base__slice_u8 data,
uint64_t history_position) {
b->data = data;
b->meta.wi = data.len;
b->meta.ri = 0;
b->meta.pos = history_position;
b->meta.closed = false;
*ptr_iop_r = data.ptr;
*ptr_io0_r = data.ptr;
*ptr_io1_r = data.ptr;
*ptr_io2_r = data.ptr + data.len;
return b;
}
// --------
static inline uint64_t //
wuffs_base__io_writer__copy_from_slice(uint8_t** ptr_iop_w,
uint8_t* io2_w,
wuffs_base__slice_u8 src) {
uint8_t* iop_w = *ptr_iop_w;
size_t n = src.len;
if (n > ((size_t)(io2_w - iop_w))) {
n = (size_t)(io2_w - iop_w);
}
if (n > 0) {
memmove(iop_w, src.ptr, n);
*ptr_iop_w += n;
}
return (uint64_t)(n);
}
static inline void //
wuffs_base__io_writer__limit(uint8_t** ptr_io2_w,
uint8_t* iop_w,
uint64_t limit) {
if (((uint64_t)(*ptr_io2_w - iop_w)) > limit) {
*ptr_io2_w = iop_w + limit;
}
}
static inline uint32_t //
wuffs_base__io_writer__limited_copy_u32_from_history(uint8_t** ptr_iop_w,
uint8_t* io0_w,
uint8_t* io2_w,
uint32_t length,
uint32_t distance) {
if (!distance) {
return 0;
}
uint8_t* p = *ptr_iop_w;
if ((size_t)(p - io0_w) < (size_t)(distance)) {
return 0;
}
uint8_t* q = p - distance;
size_t n = (size_t)(io2_w - p);
if ((size_t)(length) > n) {
length = (uint32_t)(n);
} else {
n = (size_t)(length);
}
// TODO: unrolling by 3 seems best for the std/deflate benchmarks, but that
// is mostly because 3 is the minimum length for the deflate format. This
// function implementation shouldn't overfit to that one format. Perhaps the
// limited_copy_u32_from_history Wuffs method should also take an unroll hint
// argument, and the cgen can look if that argument is the constant
// expression '3'.
//
// See also wuffs_base__io_writer__limited_copy_u32_from_history_fast below.
for (; n >= 3; n -= 3) {
*p++ = *q++;
*p++ = *q++;
*p++ = *q++;
}
for (; n; n--) {
*p++ = *q++;
}
*ptr_iop_w = p;
return length;
}
// wuffs_base__io_writer__limited_copy_u32_from_history_fast is like the
// wuffs_base__io_writer__limited_copy_u32_from_history function above, but has
// stronger pre-conditions.
//
// The caller needs to prove that:
// - length <= (io2_w - *ptr_iop_w)
// - distance >= 1
// - distance <= (*ptr_iop_w - io0_w)
static inline uint32_t //
wuffs_base__io_writer__limited_copy_u32_from_history_fast(uint8_t** ptr_iop_w,
uint8_t* io0_w,
uint8_t* io2_w,
uint32_t length,
uint32_t distance) {
uint8_t* p = *ptr_iop_w;
uint8_t* q = p - distance;
uint32_t n = length;
for (; n >= 3; n -= 3) {
*p++ = *q++;
*p++ = *q++;
*p++ = *q++;
}
for (; n; n--) {
*p++ = *q++;
}
*ptr_iop_w = p;
return length;
}
// wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast
// copies the previous byte (the one immediately before *ptr_iop_w), copying 8
// byte chunks at a time. Each chunk contains 8 repetitions of the same byte.
//
// In terms of number of bytes copied, length is rounded up to a multiple of 8.
// As a special case, a zero length rounds up to 8 (even though 0 is already a
// multiple of 8), since there is always at least one 8 byte chunk copied.
//
// In terms of advancing *ptr_iop_w, length is not rounded up.
//
// The caller needs to prove that:
// - (length + 8) <= (io2_w - *ptr_iop_w)
// - distance == 1
// - distance <= (*ptr_iop_w - io0_w)
static inline uint32_t //
wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast(
uint8_t** ptr_iop_w,
uint8_t* io0_w,
uint8_t* io2_w,
uint32_t length,
uint32_t distance) {
uint8_t* p = *ptr_iop_w;
uint64_t x = p[-1];
x |= x << 8;
x |= x << 16;
x |= x << 32;
uint32_t n = length;
while (1) {
wuffs_base__poke_u64le__no_bounds_check(p, x);
if (n <= 8) {
p += n;
break;
}
p += 8;
n -= 8;
}
*ptr_iop_w = p;
return length;
}
// wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast is
// like the wuffs_base__io_writer__limited_copy_u32_from_history_fast function
// above, but copies 8 byte chunks at a time.
//
// In terms of number of bytes copied, length is rounded up to a multiple of 8.
// As a special case, a zero length rounds up to 8 (even though 0 is already a
// multiple of 8), since there is always at least one 8 byte chunk copied.
//
// In terms of advancing *ptr_iop_w, length is not rounded up.
//
// The caller needs to prove that:
// - (length + 8) <= (io2_w - *ptr_iop_w)
// - distance >= 8
// - distance <= (*ptr_iop_w - io0_w)
static inline uint32_t //
wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
uint8_t** ptr_iop_w,
uint8_t* io0_w,
uint8_t* io2_w,
uint32_t length,
uint32_t distance) {
uint8_t* p = *ptr_iop_w;
uint8_t* q = p - distance;
uint32_t n = length;
while (1) {
memcpy(p, q, 8);
if (n <= 8) {
p += n;
break;
}
p += 8;
q += 8;
n -= 8;
}
*ptr_iop_w = p;
return length;
}
static inline uint32_t //
wuffs_base__io_writer__limited_copy_u32_from_reader(uint8_t** ptr_iop_w,
uint8_t* io2_w,
uint32_t length,
const uint8_t** ptr_iop_r,
const uint8_t* io2_r) {
uint8_t* iop_w = *ptr_iop_w;
size_t n = length;
if (n > ((size_t)(io2_w - iop_w))) {
n = (size_t)(io2_w - iop_w);
}
const uint8_t* iop_r = *ptr_iop_r;
if (n > ((size_t)(io2_r - iop_r))) {
n = (size_t)(io2_r - iop_r);
}
if (n > 0) {
memmove(iop_w, iop_r, n);
*ptr_iop_w += n;
*ptr_iop_r += n;
}
return (uint32_t)(n);
}
static inline uint32_t //
wuffs_base__io_writer__limited_copy_u32_from_slice(uint8_t** ptr_iop_w,
uint8_t* io2_w,
uint32_t length,
wuffs_base__slice_u8 src) {
uint8_t* iop_w = *ptr_iop_w;
size_t n = src.len;
if (n > length) {
n = length;
}
if (n > ((size_t)(io2_w - iop_w))) {
n = (size_t)(io2_w - iop_w);
}
if (n > 0) {
memmove(iop_w, src.ptr, n);
*ptr_iop_w += n;
}
return (uint32_t)(n);
}
static inline wuffs_base__io_buffer* //
wuffs_base__io_writer__set(wuffs_base__io_buffer* b,
uint8_t** ptr_iop_w,
uint8_t** ptr_io0_w,
uint8_t** ptr_io1_w,
uint8_t** ptr_io2_w,
wuffs_base__slice_u8 data,
uint64_t history_position) {
b->data = data;
b->meta.wi = 0;
b->meta.ri = 0;
b->meta.pos = history_position;
b->meta.closed = false;
*ptr_iop_w = data.ptr;
*ptr_io0_w = data.ptr;
*ptr_io1_w = data.ptr;
*ptr_io2_w = data.ptr + data.len;
return b;
}
// ---------------- I/O (Utility)
#define wuffs_base__utility__empty_io_reader wuffs_base__empty_io_reader
#define wuffs_base__utility__empty_io_writer wuffs_base__empty_io_writer
// ---------------- Tokens
// ---------------- Tokens (Utility)
// ---------------- Memory Allocation
// ---------------- Images
WUFFS_BASE__MAYBE_STATIC uint64_t //
wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
const wuffs_base__pixel_swizzler* p,
uint32_t up_to_num_pixels,
wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 dst_palette,
const uint8_t** ptr_iop_r,
const uint8_t* io2_r);
WUFFS_BASE__MAYBE_STATIC uint64_t //
wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
const wuffs_base__pixel_swizzler* p,
wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 dst_palette,
const uint8_t** ptr_iop_r,
const uint8_t* io2_r);
WUFFS_BASE__MAYBE_STATIC uint64_t //
wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(
const wuffs_base__pixel_swizzler* p,
wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 dst_palette,
uint64_t num_pixels);
// ---------------- Images (Utility)
#define wuffs_base__utility__make_pixel_format wuffs_base__make_pixel_format
// ---------------- String Conversions
// ---------------- Unicode and UTF-8
// ----------------
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
defined(WUFFS_CONFIG__MODULE__BASE__CORE)
const uint8_t wuffs_base__low_bits_mask__u8[8] = {
0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F,
};
const uint16_t wuffs_base__low_bits_mask__u16[16] = {
0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F,
0x00FF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF,
};
const uint32_t wuffs_base__low_bits_mask__u32[32] = {
0x00000000, 0x00000001, 0x00000003, 0x00000007, 0x0000000F, 0x0000001F,
0x0000003F, 0x0000007F, 0x000000FF, 0x000001FF, 0x000003FF, 0x000007FF,
0x00000FFF, 0x00001FFF, 0x00003FFF, 0x00007FFF, 0x0000FFFF, 0x0001FFFF,
0x0003FFFF, 0x0007FFFF, 0x000FFFFF, 0x001FFFFF, 0x003FFFFF, 0x007FFFFF,
0x00FFFFFF, 0x01FFFFFF, 0x03FFFFFF, 0x07FFFFFF, 0x0FFFFFFF, 0x1FFFFFFF,
0x3FFFFFFF, 0x7FFFFFFF,
};
const uint64_t wuffs_base__low_bits_mask__u64[64] = {
0x0000000000000000, 0x0000000000000001, 0x0000000000000003,
0x0000000000000007, 0x000000000000000F, 0x000000000000001F,
0x000000000000003F, 0x000000000000007F, 0x00000000000000FF,
0x00000000000001FF, 0x00000000000003FF, 0x00000000000007FF,
0x0000000000000FFF, 0x0000000000001FFF, 0x0000000000003FFF,
0x0000000000007FFF, 0x000000000000FFFF, 0x000000000001FFFF,
0x000000000003FFFF, 0x000000000007FFFF, 0x00000000000FFFFF,
0x00000000001FFFFF, 0x00000000003FFFFF, 0x00000000007FFFFF,
0x0000000000FFFFFF, 0x0000000001FFFFFF, 0x0000000003FFFFFF,
0x0000000007FFFFFF, 0x000000000FFFFFFF, 0x000000001FFFFFFF,
0x000000003FFFFFFF, 0x000000007FFFFFFF, 0x00000000FFFFFFFF,
0x00000001FFFFFFFF, 0x00000003FFFFFFFF, 0x00000007FFFFFFFF,
0x0000000FFFFFFFFF, 0x0000001FFFFFFFFF, 0x0000003FFFFFFFFF,
0x0000007FFFFFFFFF, 0x000000FFFFFFFFFF, 0x000001FFFFFFFFFF,
0x000003FFFFFFFFFF, 0x000007FFFFFFFFFF, 0x00000FFFFFFFFFFF,
0x00001FFFFFFFFFFF, 0x00003FFFFFFFFFFF, 0x00007FFFFFFFFFFF,
0x0000FFFFFFFFFFFF, 0x0001FFFFFFFFFFFF, 0x0003FFFFFFFFFFFF,
0x0007FFFFFFFFFFFF, 0x000FFFFFFFFFFFFF, 0x001FFFFFFFFFFFFF,
0x003FFFFFFFFFFFFF, 0x007FFFFFFFFFFFFF, 0x00FFFFFFFFFFFFFF,
0x01FFFFFFFFFFFFFF, 0x03FFFFFFFFFFFFFF, 0x07FFFFFFFFFFFFFF,
0x0FFFFFFFFFFFFFFF, 0x1FFFFFFFFFFFFFFF, 0x3FFFFFFFFFFFFFFF,
0x7FFFFFFFFFFFFFFF,
};
const uint32_t wuffs_base__pixel_format__bits_per_channel[16] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x0A, 0x0C, 0x10, 0x18, 0x20, 0x30, 0x40,
};
const char wuffs_base__note__i_o_redirect[] = "@base: I/O redirect";
const char wuffs_base__note__end_of_data[] = "@base: end of data";
const char wuffs_base__note__metadata_reported[] = "@base: metadata reported";
const char wuffs_base__suspension__even_more_information[] = "$base: even more information";
const char wuffs_base__suspension__mispositioned_read[] = "$base: mispositioned read";
const char wuffs_base__suspension__mispositioned_write[] = "$base: mispositioned write";
const char wuffs_base__suspension__short_read[] = "$base: short read";
const char wuffs_base__suspension__short_write[] = "$base: short write";
const char wuffs_base__error__bad_i_o_position[] = "#base: bad I/O position";
const char wuffs_base__error__bad_argument_length_too_short[] = "#base: bad argument (length too short)";
const char wuffs_base__error__bad_argument[] = "#base: bad argument";
const char wuffs_base__error__bad_call_sequence[] = "#base: bad call sequence";
const char wuffs_base__error__bad_data[] = "#base: bad data";
const char wuffs_base__error__bad_receiver[] = "#base: bad receiver";
const char wuffs_base__error__bad_restart[] = "#base: bad restart";
const char wuffs_base__error__bad_sizeof_receiver[] = "#base: bad sizeof receiver";
const char wuffs_base__error__bad_vtable[] = "#base: bad vtable";
const char wuffs_base__error__bad_workbuf_length[] = "#base: bad workbuf length";
const char wuffs_base__error__bad_wuffs_version[] = "#base: bad wuffs version";
const char wuffs_base__error__cannot_return_a_suspension[] = "#base: cannot return a suspension";
const char wuffs_base__error__disabled_by_previous_error[] = "#base: disabled by previous error";
const char wuffs_base__error__initialize_falsely_claimed_already_zeroed[] = "#base: initialize falsely claimed already zeroed";
const char wuffs_base__error__initialize_not_called[] = "#base: initialize not called";
const char wuffs_base__error__interleaved_coroutine_calls[] = "#base: interleaved coroutine calls";
const char wuffs_base__error__no_more_information[] = "#base: no more information";
const char wuffs_base__error__not_enough_data[] = "#base: not enough data";
const char wuffs_base__error__out_of_bounds[] = "#base: out of bounds";
const char wuffs_base__error__unsupported_method[] = "#base: unsupported method";
const char wuffs_base__error__unsupported_option[] = "#base: unsupported option";
const char wuffs_base__error__unsupported_pixel_swizzler_option[] = "#base: unsupported pixel swizzler option";
const char wuffs_base__error__too_much_data[] = "#base: too much data";
const char wuffs_base__hasher_u32__vtable_name[] = "{vtable}wuffs_base__hasher_u32";
const char wuffs_base__image_decoder__vtable_name[] = "{vtable}wuffs_base__image_decoder";
const char wuffs_base__io_transformer__vtable_name[] = "{vtable}wuffs_base__io_transformer";
const char wuffs_base__token_decoder__vtable_name[] = "{vtable}wuffs_base__token_decoder";
#endif // !defined(WUFFS_CONFIG__MODULES) ||
// defined(WUFFS_CONFIG__MODULE__BASE) ||
// defined(WUFFS_CONFIG__MODULE__BASE__CORE)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
defined(WUFFS_CONFIG__MODULE__BASE__INTERFACES)
// ---------------- Interface Definitions.
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_base__hasher_u32__set_quirk_enabled(
wuffs_base__hasher_u32* self,
uint32_t a_quirk,
bool a_enabled) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
(const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
return (*func_ptrs->set_quirk_enabled)(self, a_quirk, a_enabled);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__make_empty_struct();
}
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_base__hasher_u32__update_u32(
wuffs_base__hasher_u32* self,
wuffs_base__slice_u8 a_x) {
if (!self) {
return 0;
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return 0;
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) {
const wuffs_base__hasher_u32__func_ptrs* func_ptrs =
(const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers);
return (*func_ptrs->update_u32)(self, a_x);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return 0;
}
// --------
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_base__image_decoder__decode_frame(
wuffs_base__image_decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
const wuffs_base__image_decoder__func_ptrs* func_ptrs =
(const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
return (*func_ptrs->decode_frame)(self, a_dst, a_src, a_blend, a_workbuf, a_opts);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__make_status(wuffs_base__error__bad_vtable);
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_base__image_decoder__decode_frame_config(
wuffs_base__image_decoder* self,
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
const wuffs_base__image_decoder__func_ptrs* func_ptrs =
(const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
return (*func_ptrs->decode_frame_config)(self, a_dst, a_src);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__make_status(wuffs_base__error__bad_vtable);
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_base__image_decoder__decode_image_config(
wuffs_base__image_decoder* self,
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
const wuffs_base__image_decoder__func_ptrs* func_ptrs =
(const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
return (*func_ptrs->decode_image_config)(self, a_dst, a_src);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__make_status(wuffs_base__error__bad_vtable);
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
wuffs_base__image_decoder__frame_dirty_rect(
const wuffs_base__image_decoder* self) {
if (!self) {
return wuffs_base__utility__empty_rect_ie_u32();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_rect_ie_u32();
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
const wuffs_base__image_decoder__func_ptrs* func_ptrs =
(const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
return (*func_ptrs->frame_dirty_rect)(self);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__utility__empty_rect_ie_u32();
}
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_base__image_decoder__num_animation_loops(
const wuffs_base__image_decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
const wuffs_base__image_decoder__func_ptrs* func_ptrs =
(const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
return (*func_ptrs->num_animation_loops)(self);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return 0;
}
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_base__image_decoder__num_decoded_frame_configs(
const wuffs_base__image_decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
const wuffs_base__image_decoder__func_ptrs* func_ptrs =
(const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
return (*func_ptrs->num_decoded_frame_configs)(self);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return 0;
}
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_base__image_decoder__num_decoded_frames(
const wuffs_base__image_decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
const wuffs_base__image_decoder__func_ptrs* func_ptrs =
(const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
return (*func_ptrs->num_decoded_frames)(self);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return 0;
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_base__image_decoder__restart_frame(
wuffs_base__image_decoder* self,
uint64_t a_index,
uint64_t a_io_position) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
const wuffs_base__image_decoder__func_ptrs* func_ptrs =
(const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
return (*func_ptrs->restart_frame)(self, a_index, a_io_position);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__make_status(wuffs_base__error__bad_vtable);
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_base__image_decoder__set_quirk_enabled(
wuffs_base__image_decoder* self,
uint32_t a_quirk,
bool a_enabled) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
const wuffs_base__image_decoder__func_ptrs* func_ptrs =
(const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
return (*func_ptrs->set_quirk_enabled)(self, a_quirk, a_enabled);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__make_empty_struct();
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_base__image_decoder__set_report_metadata(
wuffs_base__image_decoder* self,
uint32_t a_fourcc,
bool a_report) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
const wuffs_base__image_decoder__func_ptrs* func_ptrs =
(const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
return (*func_ptrs->set_report_metadata)(self, a_fourcc, a_report);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__make_empty_struct();
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_base__image_decoder__tell_me_more(
wuffs_base__image_decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
const wuffs_base__image_decoder__func_ptrs* func_ptrs =
(const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
return (*func_ptrs->tell_me_more)(self, a_dst, a_minfo, a_src);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__make_status(wuffs_base__error__bad_vtable);
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_base__image_decoder__workbuf_len(
const wuffs_base__image_decoder* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__image_decoder__vtable_name) {
const wuffs_base__image_decoder__func_ptrs* func_ptrs =
(const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers);
return (*func_ptrs->workbuf_len)(self);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__utility__empty_range_ii_u64();
}
// --------
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_base__io_transformer__set_quirk_enabled(
wuffs_base__io_transformer* self,
uint32_t a_quirk,
bool a_enabled) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
const wuffs_base__io_transformer__func_ptrs* func_ptrs =
(const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
return (*func_ptrs->set_quirk_enabled)(self, a_quirk, a_enabled);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__make_empty_struct();
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_base__io_transformer__transform_io(
wuffs_base__io_transformer* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
const wuffs_base__io_transformer__func_ptrs* func_ptrs =
(const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
return (*func_ptrs->transform_io)(self, a_dst, a_src, a_workbuf);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__make_status(wuffs_base__error__bad_vtable);
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_base__io_transformer__workbuf_len(
const wuffs_base__io_transformer* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__io_transformer__vtable_name) {
const wuffs_base__io_transformer__func_ptrs* func_ptrs =
(const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers);
return (*func_ptrs->workbuf_len)(self);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__utility__empty_range_ii_u64();
}
// --------
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_base__token_decoder__decode_tokens(
wuffs_base__token_decoder* self,
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
const wuffs_base__token_decoder__func_ptrs* func_ptrs =
(const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
return (*func_ptrs->decode_tokens)(self, a_dst, a_src, a_workbuf);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__make_status(wuffs_base__error__bad_vtable);
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_base__token_decoder__set_quirk_enabled(
wuffs_base__token_decoder* self,
uint32_t a_quirk,
bool a_enabled) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
const wuffs_base__token_decoder__func_ptrs* func_ptrs =
(const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
return (*func_ptrs->set_quirk_enabled)(self, a_quirk, a_enabled);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__make_empty_struct();
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_base__token_decoder__workbuf_len(
const wuffs_base__token_decoder* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
const wuffs_base__vtable* v = &self->private_impl.first_vtable;
int i;
for (i = 0; i < 63; i++) {
if (v->vtable_name == wuffs_base__token_decoder__vtable_name) {
const wuffs_base__token_decoder__func_ptrs* func_ptrs =
(const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers);
return (*func_ptrs->workbuf_len)(self);
} else if (v->vtable_name == NULL) {
break;
}
v++;
}
return wuffs_base__utility__empty_range_ii_u64();
}
#endif // !defined(WUFFS_CONFIG__MODULES) ||
// defined(WUFFS_CONFIG__MODULE__BASE) ||
// defined(WUFFS_CONFIG__MODULE__BASE__INTERFACES)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
defined(WUFFS_CONFIG__MODULE__BASE__FLOATCONV)
// ---------------- IEEE 754 Floating Point
// The etc__hpd_left_shift and etc__powers_of_5 tables were printed by
// script/print-hpd-left-shift.go. That script has an optional -comments flag,
// whose output is not copied here, which prints further detail.
//
// These tables are used in
// wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits.
// wuffs_base__private_implementation__hpd_left_shift[i] encodes the number of
// new digits created after multiplying a positive integer by (1 << i): the
// additional length in the decimal representation. For example, shifting "234"
// by 3 (equivalent to multiplying by 8) will produce "1872". Going from a
// 3-length string to a 4-length string means that 1 new digit was added (and
// existing digits may have changed).
//
// Shifting by i can add either N or N-1 new digits, depending on whether the
// original positive integer compares >= or < to the i'th power of 5 (as 10
// equals 2 * 5). Comparison is lexicographic, not numerical.
//
// For example, shifting by 4 (i.e. multiplying by 16) can add 1 or 2 new
// digits, depending on a lexicographic comparison to (5 ** 4), i.e. "625":
// - ("1" << 4) is "16", which adds 1 new digit.
// - ("5678" << 4) is "90848", which adds 1 new digit.
// - ("624" << 4) is "9984", which adds 1 new digit.
// - ("62498" << 4) is "999968", which adds 1 new digit.
// - ("625" << 4) is "10000", which adds 2 new digits.
// - ("625001" << 4) is "10000016", which adds 2 new digits.
// - ("7008" << 4) is "112128", which adds 2 new digits.
// - ("99" << 4) is "1584", which adds 2 new digits.
//
// Thus, when i is 4, N is 2 and (5 ** i) is "625". This etc__hpd_left_shift
// array encodes this as:
// - etc__hpd_left_shift[4] is 0x1006 = (2 << 11) | 0x0006.
// - etc__hpd_left_shift[5] is 0x1009 = (? << 11) | 0x0009.
// where the ? isn't relevant for i == 4.
//
// The high 5 bits of etc__hpd_left_shift[i] is N, the higher of the two
// possible number of new digits. The low 11 bits are an offset into the
// etc__powers_of_5 array (of length 0x051C, so offsets fit in 11 bits). When i
// is 4, its offset and the next one is 6 and 9, and etc__powers_of_5[6 .. 9]
// is the string "\x06\x02\x05", so the relevant power of 5 is "625".
//
// Thanks to Ken Thompson for the original idea.
static const uint16_t wuffs_base__private_implementation__hpd_left_shift[65] = {
0x0000, 0x0800, 0x0801, 0x0803, 0x1006, 0x1009, 0x100D, 0x1812, 0x1817,
0x181D, 0x2024, 0x202B, 0x2033, 0x203C, 0x2846, 0x2850, 0x285B, 0x3067,
0x3073, 0x3080, 0x388E, 0x389C, 0x38AB, 0x38BB, 0x40CC, 0x40DD, 0x40EF,
0x4902, 0x4915, 0x4929, 0x513E, 0x5153, 0x5169, 0x5180, 0x5998, 0x59B0,
0x59C9, 0x61E3, 0x61FD, 0x6218, 0x6A34, 0x6A50, 0x6A6D, 0x6A8B, 0x72AA,
0x72C9, 0x72E9, 0x7B0A, 0x7B2B, 0x7B4D, 0x8370, 0x8393, 0x83B7, 0x83DC,
0x8C02, 0x8C28, 0x8C4F, 0x9477, 0x949F, 0x94C8, 0x9CF2, 0x051C, 0x051C,
0x051C, 0x051C,
};
// wuffs_base__private_implementation__powers_of_5 contains the powers of 5,
// concatenated together: "5", "25", "125", "625", "3125", etc.
static const uint8_t wuffs_base__private_implementation__powers_of_5[0x051C] = {
5, 2, 5, 1, 2, 5, 6, 2, 5, 3, 1, 2, 5, 1, 5, 6, 2, 5, 7, 8, 1, 2, 5, 3, 9,
0, 6, 2, 5, 1, 9, 5, 3, 1, 2, 5, 9, 7, 6, 5, 6, 2, 5, 4, 8, 8, 2, 8, 1, 2,
5, 2, 4, 4, 1, 4, 0, 6, 2, 5, 1, 2, 2, 0, 7, 0, 3, 1, 2, 5, 6, 1, 0, 3, 5,
1, 5, 6, 2, 5, 3, 0, 5, 1, 7, 5, 7, 8, 1, 2, 5, 1, 5, 2, 5, 8, 7, 8, 9, 0,
6, 2, 5, 7, 6, 2, 9, 3, 9, 4, 5, 3, 1, 2, 5, 3, 8, 1, 4, 6, 9, 7, 2, 6, 5,
6, 2, 5, 1, 9, 0, 7, 3, 4, 8, 6, 3, 2, 8, 1, 2, 5, 9, 5, 3, 6, 7, 4, 3, 1,
6, 4, 0, 6, 2, 5, 4, 7, 6, 8, 3, 7, 1, 5, 8, 2, 0, 3, 1, 2, 5, 2, 3, 8, 4,
1, 8, 5, 7, 9, 1, 0, 1, 5, 6, 2, 5, 1, 1, 9, 2, 0, 9, 2, 8, 9, 5, 5, 0, 7,
8, 1, 2, 5, 5, 9, 6, 0, 4, 6, 4, 4, 7, 7, 5, 3, 9, 0, 6, 2, 5, 2, 9, 8, 0,
2, 3, 2, 2, 3, 8, 7, 6, 9, 5, 3, 1, 2, 5, 1, 4, 9, 0, 1, 1, 6, 1, 1, 9, 3,
8, 4, 7, 6, 5, 6, 2, 5, 7, 4, 5, 0, 5, 8, 0, 5, 9, 6, 9, 2, 3, 8, 2, 8, 1,
2, 5, 3, 7, 2, 5, 2, 9, 0, 2, 9, 8, 4, 6, 1, 9, 1, 4, 0, 6, 2, 5, 1, 8, 6,
2, 6, 4, 5, 1, 4, 9, 2, 3, 0, 9, 5, 7, 0, 3, 1, 2, 5, 9, 3, 1, 3, 2, 2, 5,
7, 4, 6, 1, 5, 4, 7, 8, 5, 1, 5, 6, 2, 5, 4, 6, 5, 6, 6, 1, 2, 8, 7, 3, 0,
7, 7, 3, 9, 2, 5, 7, 8, 1, 2, 5, 2, 3, 2, 8, 3, 0, 6, 4, 3, 6, 5, 3, 8, 6,
9, 6, 2, 8, 9, 0, 6, 2, 5, 1, 1, 6, 4, 1, 5, 3, 2, 1, 8, 2, 6, 9, 3, 4, 8,
1, 4, 4, 5, 3, 1, 2, 5, 5, 8, 2, 0, 7, 6, 6, 0, 9, 1, 3, 4, 6, 7, 4, 0, 7,
2, 2, 6, 5, 6, 2, 5, 2, 9, 1, 0, 3, 8, 3, 0, 4, 5, 6, 7, 3, 3, 7, 0, 3, 6,
1, 3, 2, 8, 1, 2, 5, 1, 4, 5, 5, 1, 9, 1, 5, 2, 2, 8, 3, 6, 6, 8, 5, 1, 8,
0, 6, 6, 4, 0, 6, 2, 5, 7, 2, 7, 5, 9, 5, 7, 6, 1, 4, 1, 8, 3, 4, 2, 5, 9,
0, 3, 3, 2, 0, 3, 1, 2, 5, 3, 6, 3, 7, 9, 7, 8, 8, 0, 7, 0, 9, 1, 7, 1, 2,
9, 5, 1, 6, 6, 0, 1, 5, 6, 2, 5, 1, 8, 1, 8, 9, 8, 9, 4, 0, 3, 5, 4, 5, 8,
5, 6, 4, 7, 5, 8, 3, 0, 0, 7, 8, 1, 2, 5, 9, 0, 9, 4, 9, 4, 7, 0, 1, 7, 7,
2, 9, 2, 8, 2, 3, 7, 9, 1, 5, 0, 3, 9, 0, 6, 2, 5, 4, 5, 4, 7, 4, 7, 3, 5,
0, 8, 8, 6, 4, 6, 4, 1, 1, 8, 9, 5, 7, 5, 1, 9, 5, 3, 1, 2, 5, 2, 2, 7, 3,
7, 3, 6, 7, 5, 4, 4, 3, 2, 3, 2, 0, 5, 9, 4, 7, 8, 7, 5, 9, 7, 6, 5, 6, 2,
5, 1, 1, 3, 6, 8, 6, 8, 3, 7, 7, 2, 1, 6, 1, 6, 0, 2, 9, 7, 3, 9, 3, 7, 9,
8, 8, 2, 8, 1, 2, 5, 5, 6, 8, 4, 3, 4, 1, 8, 8, 6, 0, 8, 0, 8, 0, 1, 4, 8,
6, 9, 6, 8, 9, 9, 4, 1, 4, 0, 6, 2, 5, 2, 8, 4, 2, 1, 7, 0, 9, 4, 3, 0, 4,
0, 4, 0, 0, 7, 4, 3, 4, 8, 4, 4, 9, 7, 0, 7, 0, 3, 1, 2, 5, 1, 4, 2, 1, 0,
8, 5, 4, 7, 1, 5, 2, 0, 2, 0, 0, 3, 7, 1, 7, 4, 2, 2, 4, 8, 5, 3, 5, 1, 5,
6, 2, 5, 7, 1, 0, 5, 4, 2, 7, 3, 5, 7, 6, 0, 1, 0, 0, 1, 8, 5, 8, 7, 1, 1,
2, 4, 2, 6, 7, 5, 7, 8, 1, 2, 5, 3, 5, 5, 2, 7, 1, 3, 6, 7, 8, 8, 0, 0, 5,
0, 0, 9, 2, 9, 3, 5, 5, 6, 2, 1, 3, 3, 7, 8, 9, 0, 6, 2, 5, 1, 7, 7, 6, 3,
5, 6, 8, 3, 9, 4, 0, 0, 2, 5, 0, 4, 6, 4, 6, 7, 7, 8, 1, 0, 6, 6, 8, 9, 4,
5, 3, 1, 2, 5, 8, 8, 8, 1, 7, 8, 4, 1, 9, 7, 0, 0, 1, 2, 5, 2, 3, 2, 3, 3,
8, 9, 0, 5, 3, 3, 4, 4, 7, 2, 6, 5, 6, 2, 5, 4, 4, 4, 0, 8, 9, 2, 0, 9, 8,
5, 0, 0, 6, 2, 6, 1, 6, 1, 6, 9, 4, 5, 2, 6, 6, 7, 2, 3, 6, 3, 2, 8, 1, 2,
5, 2, 2, 2, 0, 4, 4, 6, 0, 4, 9, 2, 5, 0, 3, 1, 3, 0, 8, 0, 8, 4, 7, 2, 6,
3, 3, 3, 6, 1, 8, 1, 6, 4, 0, 6, 2, 5, 1, 1, 1, 0, 2, 2, 3, 0, 2, 4, 6, 2,
5, 1, 5, 6, 5, 4, 0, 4, 2, 3, 6, 3, 1, 6, 6, 8, 0, 9, 0, 8, 2, 0, 3, 1, 2,
5, 5, 5, 5, 1, 1, 1, 5, 1, 2, 3, 1, 2, 5, 7, 8, 2, 7, 0, 2, 1, 1, 8, 1, 5,
8, 3, 4, 0, 4, 5, 4, 1, 0, 1, 5, 6, 2, 5, 2, 7, 7, 5, 5, 5, 7, 5, 6, 1, 5,
6, 2, 8, 9, 1, 3, 5, 1, 0, 5, 9, 0, 7, 9, 1, 7, 0, 2, 2, 7, 0, 5, 0, 7, 8,
1, 2, 5, 1, 3, 8, 7, 7, 7, 8, 7, 8, 0, 7, 8, 1, 4, 4, 5, 6, 7, 5, 5, 2, 9,
5, 3, 9, 5, 8, 5, 1, 1, 3, 5, 2, 5, 3, 9, 0, 6, 2, 5, 6, 9, 3, 8, 8, 9, 3,
9, 0, 3, 9, 0, 7, 2, 2, 8, 3, 7, 7, 6, 4, 7, 6, 9, 7, 9, 2, 5, 5, 6, 7, 6,
2, 6, 9, 5, 3, 1, 2, 5, 3, 4, 6, 9, 4, 4, 6, 9, 5, 1, 9, 5, 3, 6, 1, 4, 1,
8, 8, 8, 2, 3, 8, 4, 8, 9, 6, 2, 7, 8, 3, 8, 1, 3, 4, 7, 6, 5, 6, 2, 5, 1,
7, 3, 4, 7, 2, 3, 4, 7, 5, 9, 7, 6, 8, 0, 7, 0, 9, 4, 4, 1, 1, 9, 2, 4, 4,
8, 1, 3, 9, 1, 9, 0, 6, 7, 3, 8, 2, 8, 1, 2, 5, 8, 6, 7, 3, 6, 1, 7, 3, 7,
9, 8, 8, 4, 0, 3, 5, 4, 7, 2, 0, 5, 9, 6, 2, 2, 4, 0, 6, 9, 5, 9, 5, 3, 3,
6, 9, 1, 4, 0, 6, 2, 5,
};
// --------
// wuffs_base__private_implementation__powers_of_10 contains truncated
// approximations to the powers of 10, ranging from 1e-307 to 1e+288 inclusive,
// as 596 pairs of uint64_t values (a 128-bit mantissa).
//
// There's also an implicit third column (implied by a linear formula involving
// the base-10 exponent) that is the base-2 exponent, biased by a magic
// constant. That constant (1214 or 0x04BE) equals 1023 + 191. 1023 is the bias
// for IEEE 754 double-precision floating point. 191 is ((3 * 64) - 1) and
// wuffs_base__private_implementation__parse_number_f64_eisel_lemire works with
// multiples-of-64-bit mantissas.
//
// For example, the third row holds the approximation to 1e-305:
// 0xE0B62E29_29ABA83C_331ACDAB_FE94DE87 * (2 ** (0x0049 - 0x04BE))
//
// Similarly, 1e+4 is approximated by:
// 0x9C400000_00000000_00000000_00000000 * (2 ** (0x044C - 0x04BE))
//
// Similarly, 1e+68 is approximated by:
// 0xED63A231_D4C4FB27_4CA7AAA8_63EE4BDD * (2 ** (0x0520 - 0x04BE))
//
// This table was generated by by script/print-mpb-powers-of-10.go
static const uint64_t wuffs_base__private_implementation__powers_of_10[596][2] =
{
{0xA5D3B6D479F8E056, 0x8FD0C16206306BAB}, // 1e-307
{0x8F48A4899877186C, 0xB3C4F1BA87BC8696}, // 1e-306
{0x331ACDABFE94DE87, 0xE0B62E2929ABA83C}, // 1e-305
{0x9FF0C08B7F1D0B14, 0x8C71DCD9BA0B4925}, // 1e-304
{0x07ECF0AE5EE44DD9, 0xAF8E5410288E1B6F}, // 1e-303
{0xC9E82CD9F69D6150, 0xDB71E91432B1A24A}, // 1e-302
{0xBE311C083A225CD2, 0x892731AC9FAF056E}, // 1e-301
{0x6DBD630A48AAF406, 0xAB70FE17C79AC6CA}, // 1e-300
{0x092CBBCCDAD5B108, 0xD64D3D9DB981787D}, // 1e-299
{0x25BBF56008C58EA5, 0x85F0468293F0EB4E}, // 1e-298
{0xAF2AF2B80AF6F24E, 0xA76C582338ED2621}, // 1e-297
{0x1AF5AF660DB4AEE1, 0xD1476E2C07286FAA}, // 1e-296
{0x50D98D9FC890ED4D, 0x82CCA4DB847945CA}, // 1e-295
{0xE50FF107BAB528A0, 0xA37FCE126597973C}, // 1e-294
{0x1E53ED49A96272C8, 0xCC5FC196FEFD7D0C}, // 1e-293
{0x25E8E89C13BB0F7A, 0xFF77B1FCBEBCDC4F}, // 1e-292
{0x77B191618C54E9AC, 0x9FAACF3DF73609B1}, // 1e-291
{0xD59DF5B9EF6A2417, 0xC795830D75038C1D}, // 1e-290
{0x4B0573286B44AD1D, 0xF97AE3D0D2446F25}, // 1e-289
{0x4EE367F9430AEC32, 0x9BECCE62836AC577}, // 1e-288
{0x229C41F793CDA73F, 0xC2E801FB244576D5}, // 1e-287
{0x6B43527578C1110F, 0xF3A20279ED56D48A}, // 1e-286
{0x830A13896B78AAA9, 0x9845418C345644D6}, // 1e-285
{0x23CC986BC656D553, 0xBE5691EF416BD60C}, // 1e-284
{0x2CBFBE86B7EC8AA8, 0xEDEC366B11C6CB8F}, // 1e-283
{0x7BF7D71432F3D6A9, 0x94B3A202EB1C3F39}, // 1e-282
{0xDAF5CCD93FB0CC53, 0xB9E08A83A5E34F07}, // 1e-281
{0xD1B3400F8F9CFF68, 0xE858AD248F5C22C9}, // 1e-280
{0x23100809B9C21FA1, 0x91376C36D99995BE}, // 1e-279
{0xABD40A0C2832A78A, 0xB58547448FFFFB2D}, // 1e-278
{0x16C90C8F323F516C, 0xE2E69915B3FFF9F9}, // 1e-277
{0xAE3DA7D97F6792E3, 0x8DD01FAD907FFC3B}, // 1e-276
{0x99CD11CFDF41779C, 0xB1442798F49FFB4A}, // 1e-275
{0x40405643D711D583, 0xDD95317F31C7FA1D}, // 1e-274
{0x482835EA666B2572, 0x8A7D3EEF7F1CFC52}, // 1e-273
{0xDA3243650005EECF, 0xAD1C8EAB5EE43B66}, // 1e-272
{0x90BED43E40076A82, 0xD863B256369D4A40}, // 1e-271
{0x5A7744A6E804A291, 0x873E4F75E2224E68}, // 1e-270
{0x711515D0A205CB36, 0xA90DE3535AAAE202}, // 1e-269
{0x0D5A5B44CA873E03, 0xD3515C2831559A83}, // 1e-268
{0xE858790AFE9486C2, 0x8412D9991ED58091}, // 1e-267
{0x626E974DBE39A872, 0xA5178FFF668AE0B6}, // 1e-266
{0xFB0A3D212DC8128F, 0xCE5D73FF402D98E3}, // 1e-265
{0x7CE66634BC9D0B99, 0x80FA687F881C7F8E}, // 1e-264
{0x1C1FFFC1EBC44E80, 0xA139029F6A239F72}, // 1e-263
{0xA327FFB266B56220, 0xC987434744AC874E}, // 1e-262
{0x4BF1FF9F0062BAA8, 0xFBE9141915D7A922}, // 1e-261
{0x6F773FC3603DB4A9, 0x9D71AC8FADA6C9B5}, // 1e-260
{0xCB550FB4384D21D3, 0xC4CE17B399107C22}, // 1e-259
{0x7E2A53A146606A48, 0xF6019DA07F549B2B}, // 1e-258
{0x2EDA7444CBFC426D, 0x99C102844F94E0FB}, // 1e-257
{0xFA911155FEFB5308, 0xC0314325637A1939}, // 1e-256
{0x793555AB7EBA27CA, 0xF03D93EEBC589F88}, // 1e-255
{0x4BC1558B2F3458DE, 0x96267C7535B763B5}, // 1e-254
{0x9EB1AAEDFB016F16, 0xBBB01B9283253CA2}, // 1e-253
{0x465E15A979C1CADC, 0xEA9C227723EE8BCB}, // 1e-252
{0x0BFACD89EC191EC9, 0x92A1958A7675175F}, // 1e-251
{0xCEF980EC671F667B, 0xB749FAED14125D36}, // 1e-250
{0x82B7E12780E7401A, 0xE51C79A85916F484}, // 1e-249
{0xD1B2ECB8B0908810, 0x8F31CC0937AE58D2}, // 1e-248
{0x861FA7E6DCB4AA15, 0xB2FE3F0B8599EF07}, // 1e-247
{0x67A791E093E1D49A, 0xDFBDCECE67006AC9}, // 1e-246
{0xE0C8BB2C5C6D24E0, 0x8BD6A141006042BD}, // 1e-245
{0x58FAE9F773886E18, 0xAECC49914078536D}, // 1e-244
{0xAF39A475506A899E, 0xDA7F5BF590966848}, // 1e-243
{0x6D8406C952429603, 0x888F99797A5E012D}, // 1e-242
{0xC8E5087BA6D33B83, 0xAAB37FD7D8F58178}, // 1e-241
{0xFB1E4A9A90880A64, 0xD5605FCDCF32E1D6}, // 1e-240
{0x5CF2EEA09A55067F, 0x855C3BE0A17FCD26}, // 1e-239
{0xF42FAA48C0EA481E, 0xA6B34AD8C9DFC06F}, // 1e-238
{0xF13B94DAF124DA26, 0xD0601D8EFC57B08B}, // 1e-237
{0x76C53D08D6B70858, 0x823C12795DB6CE57}, // 1e-236
{0x54768C4B0C64CA6E, 0xA2CB1717B52481ED}, // 1e-235
{0xA9942F5DCF7DFD09, 0xCB7DDCDDA26DA268}, // 1e-234
{0xD3F93B35435D7C4C, 0xFE5D54150B090B02}, // 1e-233
{0xC47BC5014A1A6DAF, 0x9EFA548D26E5A6E1}, // 1e-232
{0x359AB6419CA1091B, 0xC6B8E9B0709F109A}, // 1e-231
{0xC30163D203C94B62, 0xF867241C8CC6D4C0}, // 1e-230
{0x79E0DE63425DCF1D, 0x9B407691D7FC44F8}, // 1e-229
{0x985915FC12F542E4, 0xC21094364DFB5636}, // 1e-228
{0x3E6F5B7B17B2939D, 0xF294B943E17A2BC4}, // 1e-227
{0xA705992CEECF9C42, 0x979CF3CA6CEC5B5A}, // 1e-226
{0x50C6FF782A838353, 0xBD8430BD08277231}, // 1e-225
{0xA4F8BF5635246428, 0xECE53CEC4A314EBD}, // 1e-224
{0x871B7795E136BE99, 0x940F4613AE5ED136}, // 1e-223
{0x28E2557B59846E3F, 0xB913179899F68584}, // 1e-222
{0x331AEADA2FE589CF, 0xE757DD7EC07426E5}, // 1e-221
{0x3FF0D2C85DEF7621, 0x9096EA6F3848984F}, // 1e-220
{0x0FED077A756B53A9, 0xB4BCA50B065ABE63}, // 1e-219
{0xD3E8495912C62894, 0xE1EBCE4DC7F16DFB}, // 1e-218
{0x64712DD7ABBBD95C, 0x8D3360F09CF6E4BD}, // 1e-217
{0xBD8D794D96AACFB3, 0xB080392CC4349DEC}, // 1e-216
{0xECF0D7A0FC5583A0, 0xDCA04777F541C567}, // 1e-215
{0xF41686C49DB57244, 0x89E42CAAF9491B60}, // 1e-214
{0x311C2875C522CED5, 0xAC5D37D5B79B6239}, // 1e-213
{0x7D633293366B828B, 0xD77485CB25823AC7}, // 1e-212
{0xAE5DFF9C02033197, 0x86A8D39EF77164BC}, // 1e-211
{0xD9F57F830283FDFC, 0xA8530886B54DBDEB}, // 1e-210
{0xD072DF63C324FD7B, 0xD267CAA862A12D66}, // 1e-209
{0x4247CB9E59F71E6D, 0x8380DEA93DA4BC60}, // 1e-208
{0x52D9BE85F074E608, 0xA46116538D0DEB78}, // 1e-207
{0x67902E276C921F8B, 0xCD795BE870516656}, // 1e-206
{0x00BA1CD8A3DB53B6, 0x806BD9714632DFF6}, // 1e-205
{0x80E8A40ECCD228A4, 0xA086CFCD97BF97F3}, // 1e-204
{0x6122CD128006B2CD, 0xC8A883C0FDAF7DF0}, // 1e-203
{0x796B805720085F81, 0xFAD2A4B13D1B5D6C}, // 1e-202
{0xCBE3303674053BB0, 0x9CC3A6EEC6311A63}, // 1e-201
{0xBEDBFC4411068A9C, 0xC3F490AA77BD60FC}, // 1e-200
{0xEE92FB5515482D44, 0xF4F1B4D515ACB93B}, // 1e-199
{0x751BDD152D4D1C4A, 0x991711052D8BF3C5}, // 1e-198
{0xD262D45A78A0635D, 0xBF5CD54678EEF0B6}, // 1e-197
{0x86FB897116C87C34, 0xEF340A98172AACE4}, // 1e-196
{0xD45D35E6AE3D4DA0, 0x9580869F0E7AAC0E}, // 1e-195
{0x8974836059CCA109, 0xBAE0A846D2195712}, // 1e-194
{0x2BD1A438703FC94B, 0xE998D258869FACD7}, // 1e-193
{0x7B6306A34627DDCF, 0x91FF83775423CC06}, // 1e-192
{0x1A3BC84C17B1D542, 0xB67F6455292CBF08}, // 1e-191
{0x20CABA5F1D9E4A93, 0xE41F3D6A7377EECA}, // 1e-190
{0x547EB47B7282EE9C, 0x8E938662882AF53E}, // 1e-189
{0xE99E619A4F23AA43, 0xB23867FB2A35B28D}, // 1e-188
{0x6405FA00E2EC94D4, 0xDEC681F9F4C31F31}, // 1e-187
{0xDE83BC408DD3DD04, 0x8B3C113C38F9F37E}, // 1e-186
{0x9624AB50B148D445, 0xAE0B158B4738705E}, // 1e-185
{0x3BADD624DD9B0957, 0xD98DDAEE19068C76}, // 1e-184
{0xE54CA5D70A80E5D6, 0x87F8A8D4CFA417C9}, // 1e-183
{0x5E9FCF4CCD211F4C, 0xA9F6D30A038D1DBC}, // 1e-182
{0x7647C3200069671F, 0xD47487CC8470652B}, // 1e-181
{0x29ECD9F40041E073, 0x84C8D4DFD2C63F3B}, // 1e-180
{0xF468107100525890, 0xA5FB0A17C777CF09}, // 1e-179
{0x7182148D4066EEB4, 0xCF79CC9DB955C2CC}, // 1e-178
{0xC6F14CD848405530, 0x81AC1FE293D599BF}, // 1e-177
{0xB8ADA00E5A506A7C, 0xA21727DB38CB002F}, // 1e-176
{0xA6D90811F0E4851C, 0xCA9CF1D206FDC03B}, // 1e-175
{0x908F4A166D1DA663, 0xFD442E4688BD304A}, // 1e-174
{0x9A598E4E043287FE, 0x9E4A9CEC15763E2E}, // 1e-173
{0x40EFF1E1853F29FD, 0xC5DD44271AD3CDBA}, // 1e-172
{0xD12BEE59E68EF47C, 0xF7549530E188C128}, // 1e-171
{0x82BB74F8301958CE, 0x9A94DD3E8CF578B9}, // 1e-170
{0xE36A52363C1FAF01, 0xC13A148E3032D6E7}, // 1e-169
{0xDC44E6C3CB279AC1, 0xF18899B1BC3F8CA1}, // 1e-168
{0x29AB103A5EF8C0B9, 0x96F5600F15A7B7E5}, // 1e-167
{0x7415D448F6B6F0E7, 0xBCB2B812DB11A5DE}, // 1e-166
{0x111B495B3464AD21, 0xEBDF661791D60F56}, // 1e-165
{0xCAB10DD900BEEC34, 0x936B9FCEBB25C995}, // 1e-164
{0x3D5D514F40EEA742, 0xB84687C269EF3BFB}, // 1e-163
{0x0CB4A5A3112A5112, 0xE65829B3046B0AFA}, // 1e-162
{0x47F0E785EABA72AB, 0x8FF71A0FE2C2E6DC}, // 1e-161
{0x59ED216765690F56, 0xB3F4E093DB73A093}, // 1e-160
{0x306869C13EC3532C, 0xE0F218B8D25088B8}, // 1e-159
{0x1E414218C73A13FB, 0x8C974F7383725573}, // 1e-158
{0xE5D1929EF90898FA, 0xAFBD2350644EEACF}, // 1e-157
{0xDF45F746B74ABF39, 0xDBAC6C247D62A583}, // 1e-156
{0x6B8BBA8C328EB783, 0x894BC396CE5DA772}, // 1e-155
{0x066EA92F3F326564, 0xAB9EB47C81F5114F}, // 1e-154
{0xC80A537B0EFEFEBD, 0xD686619BA27255A2}, // 1e-153
{0xBD06742CE95F5F36, 0x8613FD0145877585}, // 1e-152
{0x2C48113823B73704, 0xA798FC4196E952E7}, // 1e-151
{0xF75A15862CA504C5, 0xD17F3B51FCA3A7A0}, // 1e-150
{0x9A984D73DBE722FB, 0x82EF85133DE648C4}, // 1e-149
{0xC13E60D0D2E0EBBA, 0xA3AB66580D5FDAF5}, // 1e-148
{0x318DF905079926A8, 0xCC963FEE10B7D1B3}, // 1e-147
{0xFDF17746497F7052, 0xFFBBCFE994E5C61F}, // 1e-146
{0xFEB6EA8BEDEFA633, 0x9FD561F1FD0F9BD3}, // 1e-145
{0xFE64A52EE96B8FC0, 0xC7CABA6E7C5382C8}, // 1e-144
{0x3DFDCE7AA3C673B0, 0xF9BD690A1B68637B}, // 1e-143
{0x06BEA10CA65C084E, 0x9C1661A651213E2D}, // 1e-142
{0x486E494FCFF30A62, 0xC31BFA0FE5698DB8}, // 1e-141
{0x5A89DBA3C3EFCCFA, 0xF3E2F893DEC3F126}, // 1e-140
{0xF89629465A75E01C, 0x986DDB5C6B3A76B7}, // 1e-139
{0xF6BBB397F1135823, 0xBE89523386091465}, // 1e-138
{0x746AA07DED582E2C, 0xEE2BA6C0678B597F}, // 1e-137
{0xA8C2A44EB4571CDC, 0x94DB483840B717EF}, // 1e-136
{0x92F34D62616CE413, 0xBA121A4650E4DDEB}, // 1e-135
{0x77B020BAF9C81D17, 0xE896A0D7E51E1566}, // 1e-134
{0x0ACE1474DC1D122E, 0x915E2486EF32CD60}, // 1e-133
{0x0D819992132456BA, 0xB5B5ADA8AAFF80B8}, // 1e-132
{0x10E1FFF697ED6C69, 0xE3231912D5BF60E6}, // 1e-131
{0xCA8D3FFA1EF463C1, 0x8DF5EFABC5979C8F}, // 1e-130
{0xBD308FF8A6B17CB2, 0xB1736B96B6FD83B3}, // 1e-129
{0xAC7CB3F6D05DDBDE, 0xDDD0467C64BCE4A0}, // 1e-128
{0x6BCDF07A423AA96B, 0x8AA22C0DBEF60EE4}, // 1e-127
{0x86C16C98D2C953C6, 0xAD4AB7112EB3929D}, // 1e-126
{0xE871C7BF077BA8B7, 0xD89D64D57A607744}, // 1e-125
{0x11471CD764AD4972, 0x87625F056C7C4A8B}, // 1e-124
{0xD598E40D3DD89BCF, 0xA93AF6C6C79B5D2D}, // 1e-123
{0x4AFF1D108D4EC2C3, 0xD389B47879823479}, // 1e-122
{0xCEDF722A585139BA, 0x843610CB4BF160CB}, // 1e-121
{0xC2974EB4EE658828, 0xA54394FE1EEDB8FE}, // 1e-120
{0x733D226229FEEA32, 0xCE947A3DA6A9273E}, // 1e-119
{0x0806357D5A3F525F, 0x811CCC668829B887}, // 1e-118
{0xCA07C2DCB0CF26F7, 0xA163FF802A3426A8}, // 1e-117
{0xFC89B393DD02F0B5, 0xC9BCFF6034C13052}, // 1e-116
{0xBBAC2078D443ACE2, 0xFC2C3F3841F17C67}, // 1e-115
{0xD54B944B84AA4C0D, 0x9D9BA7832936EDC0}, // 1e-114
{0x0A9E795E65D4DF11, 0xC5029163F384A931}, // 1e-113
{0x4D4617B5FF4A16D5, 0xF64335BCF065D37D}, // 1e-112
{0x504BCED1BF8E4E45, 0x99EA0196163FA42E}, // 1e-111
{0xE45EC2862F71E1D6, 0xC06481FB9BCF8D39}, // 1e-110
{0x5D767327BB4E5A4C, 0xF07DA27A82C37088}, // 1e-109
{0x3A6A07F8D510F86F, 0x964E858C91BA2655}, // 1e-108
{0x890489F70A55368B, 0xBBE226EFB628AFEA}, // 1e-107
{0x2B45AC74CCEA842E, 0xEADAB0ABA3B2DBE5}, // 1e-106
{0x3B0B8BC90012929D, 0x92C8AE6B464FC96F}, // 1e-105
{0x09CE6EBB40173744, 0xB77ADA0617E3BBCB}, // 1e-104
{0xCC420A6A101D0515, 0xE55990879DDCAABD}, // 1e-103
{0x9FA946824A12232D, 0x8F57FA54C2A9EAB6}, // 1e-102
{0x47939822DC96ABF9, 0xB32DF8E9F3546564}, // 1e-101
{0x59787E2B93BC56F7, 0xDFF9772470297EBD}, // 1e-100
{0x57EB4EDB3C55B65A, 0x8BFBEA76C619EF36}, // 1e-99
{0xEDE622920B6B23F1, 0xAEFAE51477A06B03}, // 1e-98
{0xE95FAB368E45ECED, 0xDAB99E59958885C4}, // 1e-97
{0x11DBCB0218EBB414, 0x88B402F7FD75539B}, // 1e-96
{0xD652BDC29F26A119, 0xAAE103B5FCD2A881}, // 1e-95
{0x4BE76D3346F0495F, 0xD59944A37C0752A2}, // 1e-94
{0x6F70A4400C562DDB, 0x857FCAE62D8493A5}, // 1e-93
{0xCB4CCD500F6BB952, 0xA6DFBD9FB8E5B88E}, // 1e-92
{0x7E2000A41346A7A7, 0xD097AD07A71F26B2}, // 1e-91
{0x8ED400668C0C28C8, 0x825ECC24C873782F}, // 1e-90
{0x728900802F0F32FA, 0xA2F67F2DFA90563B}, // 1e-89
{0x4F2B40A03AD2FFB9, 0xCBB41EF979346BCA}, // 1e-88
{0xE2F610C84987BFA8, 0xFEA126B7D78186BC}, // 1e-87
{0x0DD9CA7D2DF4D7C9, 0x9F24B832E6B0F436}, // 1e-86
{0x91503D1C79720DBB, 0xC6EDE63FA05D3143}, // 1e-85
{0x75A44C6397CE912A, 0xF8A95FCF88747D94}, // 1e-84
{0xC986AFBE3EE11ABA, 0x9B69DBE1B548CE7C}, // 1e-83
{0xFBE85BADCE996168, 0xC24452DA229B021B}, // 1e-82
{0xFAE27299423FB9C3, 0xF2D56790AB41C2A2}, // 1e-81
{0xDCCD879FC967D41A, 0x97C560BA6B0919A5}, // 1e-80
{0x5400E987BBC1C920, 0xBDB6B8E905CB600F}, // 1e-79
{0x290123E9AAB23B68, 0xED246723473E3813}, // 1e-78
{0xF9A0B6720AAF6521, 0x9436C0760C86E30B}, // 1e-77
{0xF808E40E8D5B3E69, 0xB94470938FA89BCE}, // 1e-76
{0xB60B1D1230B20E04, 0xE7958CB87392C2C2}, // 1e-75
{0xB1C6F22B5E6F48C2, 0x90BD77F3483BB9B9}, // 1e-74
{0x1E38AEB6360B1AF3, 0xB4ECD5F01A4AA828}, // 1e-73
{0x25C6DA63C38DE1B0, 0xE2280B6C20DD5232}, // 1e-72
{0x579C487E5A38AD0E, 0x8D590723948A535F}, // 1e-71
{0x2D835A9DF0C6D851, 0xB0AF48EC79ACE837}, // 1e-70
{0xF8E431456CF88E65, 0xDCDB1B2798182244}, // 1e-69
{0x1B8E9ECB641B58FF, 0x8A08F0F8BF0F156B}, // 1e-68
{0xE272467E3D222F3F, 0xAC8B2D36EED2DAC5}, // 1e-67
{0x5B0ED81DCC6ABB0F, 0xD7ADF884AA879177}, // 1e-66
{0x98E947129FC2B4E9, 0x86CCBB52EA94BAEA}, // 1e-65
{0x3F2398D747B36224, 0xA87FEA27A539E9A5}, // 1e-64
{0x8EEC7F0D19A03AAD, 0xD29FE4B18E88640E}, // 1e-63
{0x1953CF68300424AC, 0x83A3EEEEF9153E89}, // 1e-62
{0x5FA8C3423C052DD7, 0xA48CEAAAB75A8E2B}, // 1e-61
{0x3792F412CB06794D, 0xCDB02555653131B6}, // 1e-60
{0xE2BBD88BBEE40BD0, 0x808E17555F3EBF11}, // 1e-59
{0x5B6ACEAEAE9D0EC4, 0xA0B19D2AB70E6ED6}, // 1e-58
{0xF245825A5A445275, 0xC8DE047564D20A8B}, // 1e-57
{0xEED6E2F0F0D56712, 0xFB158592BE068D2E}, // 1e-56
{0x55464DD69685606B, 0x9CED737BB6C4183D}, // 1e-55
{0xAA97E14C3C26B886, 0xC428D05AA4751E4C}, // 1e-54
{0xD53DD99F4B3066A8, 0xF53304714D9265DF}, // 1e-53
{0xE546A8038EFE4029, 0x993FE2C6D07B7FAB}, // 1e-52
{0xDE98520472BDD033, 0xBF8FDB78849A5F96}, // 1e-51
{0x963E66858F6D4440, 0xEF73D256A5C0F77C}, // 1e-50
{0xDDE7001379A44AA8, 0x95A8637627989AAD}, // 1e-49
{0x5560C018580D5D52, 0xBB127C53B17EC159}, // 1e-48
{0xAAB8F01E6E10B4A6, 0xE9D71B689DDE71AF}, // 1e-47
{0xCAB3961304CA70E8, 0x9226712162AB070D}, // 1e-46
{0x3D607B97C5FD0D22, 0xB6B00D69BB55C8D1}, // 1e-45
{0x8CB89A7DB77C506A, 0xE45C10C42A2B3B05}, // 1e-44
{0x77F3608E92ADB242, 0x8EB98A7A9A5B04E3}, // 1e-43
{0x55F038B237591ED3, 0xB267ED1940F1C61C}, // 1e-42
{0x6B6C46DEC52F6688, 0xDF01E85F912E37A3}, // 1e-41
{0x2323AC4B3B3DA015, 0x8B61313BBABCE2C6}, // 1e-40
{0xABEC975E0A0D081A, 0xAE397D8AA96C1B77}, // 1e-39
{0x96E7BD358C904A21, 0xD9C7DCED53C72255}, // 1e-38
{0x7E50D64177DA2E54, 0x881CEA14545C7575}, // 1e-37
{0xDDE50BD1D5D0B9E9, 0xAA242499697392D2}, // 1e-36
{0x955E4EC64B44E864, 0xD4AD2DBFC3D07787}, // 1e-35
{0xBD5AF13BEF0B113E, 0x84EC3C97DA624AB4}, // 1e-34
{0xECB1AD8AEACDD58E, 0xA6274BBDD0FADD61}, // 1e-33
{0x67DE18EDA5814AF2, 0xCFB11EAD453994BA}, // 1e-32
{0x80EACF948770CED7, 0x81CEB32C4B43FCF4}, // 1e-31
{0xA1258379A94D028D, 0xA2425FF75E14FC31}, // 1e-30
{0x096EE45813A04330, 0xCAD2F7F5359A3B3E}, // 1e-29
{0x8BCA9D6E188853FC, 0xFD87B5F28300CA0D}, // 1e-28
{0x775EA264CF55347D, 0x9E74D1B791E07E48}, // 1e-27
{0x95364AFE032A819D, 0xC612062576589DDA}, // 1e-26
{0x3A83DDBD83F52204, 0xF79687AED3EEC551}, // 1e-25
{0xC4926A9672793542, 0x9ABE14CD44753B52}, // 1e-24
{0x75B7053C0F178293, 0xC16D9A0095928A27}, // 1e-23
{0x5324C68B12DD6338, 0xF1C90080BAF72CB1}, // 1e-22
{0xD3F6FC16EBCA5E03, 0x971DA05074DA7BEE}, // 1e-21
{0x88F4BB1CA6BCF584, 0xBCE5086492111AEA}, // 1e-20
{0x2B31E9E3D06C32E5, 0xEC1E4A7DB69561A5}, // 1e-19
{0x3AFF322E62439FCF, 0x9392EE8E921D5D07}, // 1e-18
{0x09BEFEB9FAD487C2, 0xB877AA3236A4B449}, // 1e-17
{0x4C2EBE687989A9B3, 0xE69594BEC44DE15B}, // 1e-16
{0x0F9D37014BF60A10, 0x901D7CF73AB0ACD9}, // 1e-15
{0x538484C19EF38C94, 0xB424DC35095CD80F}, // 1e-14
{0x2865A5F206B06FB9, 0xE12E13424BB40E13}, // 1e-13
{0xF93F87B7442E45D3, 0x8CBCCC096F5088CB}, // 1e-12
{0xF78F69A51539D748, 0xAFEBFF0BCB24AAFE}, // 1e-11
{0xB573440E5A884D1B, 0xDBE6FECEBDEDD5BE}, // 1e-10
{0x31680A88F8953030, 0x89705F4136B4A597}, // 1e-9
{0xFDC20D2B36BA7C3D, 0xABCC77118461CEFC}, // 1e-8
{0x3D32907604691B4C, 0xD6BF94D5E57A42BC}, // 1e-7
{0xA63F9A49C2C1B10F, 0x8637BD05AF6C69B5}, // 1e-6
{0x0FCF80DC33721D53, 0xA7C5AC471B478423}, // 1e-5
{0xD3C36113404EA4A8, 0xD1B71758E219652B}, // 1e-4
{0x645A1CAC083126E9, 0x83126E978D4FDF3B}, // 1e-3
{0x3D70A3D70A3D70A3, 0xA3D70A3D70A3D70A}, // 1e-2
{0xCCCCCCCCCCCCCCCC, 0xCCCCCCCCCCCCCCCC}, // 1e-1
{0x0000000000000000, 0x8000000000000000}, // 1e0
{0x0000000000000000, 0xA000000000000000}, // 1e1
{0x0000000000000000, 0xC800000000000000}, // 1e2
{0x0000000000000000, 0xFA00000000000000}, // 1e3
{0x0000000000000000, 0x9C40000000000000}, // 1e4
{0x0000000000000000, 0xC350000000000000}, // 1e5
{0x0000000000000000, 0xF424000000000000}, // 1e6
{0x0000000000000000, 0x9896800000000000}, // 1e7
{0x0000000000000000, 0xBEBC200000000000}, // 1e8
{0x0000000000000000, 0xEE6B280000000000}, // 1e9
{0x0000000000000000, 0x9502F90000000000}, // 1e10
{0x0000000000000000, 0xBA43B74000000000}, // 1e11
{0x0000000000000000, 0xE8D4A51000000000}, // 1e12
{0x0000000000000000, 0x9184E72A00000000}, // 1e13
{0x0000000000000000, 0xB5E620F480000000}, // 1e14
{0x0000000000000000, 0xE35FA931A0000000}, // 1e15
{0x0000000000000000, 0x8E1BC9BF04000000}, // 1e16
{0x0000000000000000, 0xB1A2BC2EC5000000}, // 1e17
{0x0000000000000000, 0xDE0B6B3A76400000}, // 1e18
{0x0000000000000000, 0x8AC7230489E80000}, // 1e19
{0x0000000000000000, 0xAD78EBC5AC620000}, // 1e20
{0x0000000000000000, 0xD8D726B7177A8000}, // 1e21
{0x0000000000000000, 0x878678326EAC9000}, // 1e22
{0x0000000000000000, 0xA968163F0A57B400}, // 1e23
{0x0000000000000000, 0xD3C21BCECCEDA100}, // 1e24
{0x0000000000000000, 0x84595161401484A0}, // 1e25
{0x0000000000000000, 0xA56FA5B99019A5C8}, // 1e26
{0x0000000000000000, 0xCECB8F27F4200F3A}, // 1e27
{0x4000000000000000, 0x813F3978F8940984}, // 1e28
{0x5000000000000000, 0xA18F07D736B90BE5}, // 1e29
{0xA400000000000000, 0xC9F2C9CD04674EDE}, // 1e30
{0x4D00000000000000, 0xFC6F7C4045812296}, // 1e31
{0xF020000000000000, 0x9DC5ADA82B70B59D}, // 1e32
{0x6C28000000000000, 0xC5371912364CE305}, // 1e33
{0xC732000000000000, 0xF684DF56C3E01BC6}, // 1e34
{0x3C7F400000000000, 0x9A130B963A6C115C}, // 1e35
{0x4B9F100000000000, 0xC097CE7BC90715B3}, // 1e36
{0x1E86D40000000000, 0xF0BDC21ABB48DB20}, // 1e37
{0x1314448000000000, 0x96769950B50D88F4}, // 1e38
{0x17D955A000000000, 0xBC143FA4E250EB31}, // 1e39
{0x5DCFAB0800000000, 0xEB194F8E1AE525FD}, // 1e40
{0x5AA1CAE500000000, 0x92EFD1B8D0CF37BE}, // 1e41
{0xF14A3D9E40000000, 0xB7ABC627050305AD}, // 1e42
{0x6D9CCD05D0000000, 0xE596B7B0C643C719}, // 1e43
{0xE4820023A2000000, 0x8F7E32CE7BEA5C6F}, // 1e44
{0xDDA2802C8A800000, 0xB35DBF821AE4F38B}, // 1e45
{0xD50B2037AD200000, 0xE0352F62A19E306E}, // 1e46
{0x4526F422CC340000, 0x8C213D9DA502DE45}, // 1e47
{0x9670B12B7F410000, 0xAF298D050E4395D6}, // 1e48
{0x3C0CDD765F114000, 0xDAF3F04651D47B4C}, // 1e49
{0xA5880A69FB6AC800, 0x88D8762BF324CD0F}, // 1e50
{0x8EEA0D047A457A00, 0xAB0E93B6EFEE0053}, // 1e51
{0x72A4904598D6D880, 0xD5D238A4ABE98068}, // 1e52
{0x47A6DA2B7F864750, 0x85A36366EB71F041}, // 1e53
{0x999090B65F67D924, 0xA70C3C40A64E6C51}, // 1e54
{0xFFF4B4E3F741CF6D, 0xD0CF4B50CFE20765}, // 1e55
{0xBFF8F10E7A8921A4, 0x82818F1281ED449F}, // 1e56
{0xAFF72D52192B6A0D, 0xA321F2D7226895C7}, // 1e57
{0x9BF4F8A69F764490, 0xCBEA6F8CEB02BB39}, // 1e58
{0x02F236D04753D5B4, 0xFEE50B7025C36A08}, // 1e59
{0x01D762422C946590, 0x9F4F2726179A2245}, // 1e60
{0x424D3AD2B7B97EF5, 0xC722F0EF9D80AAD6}, // 1e61
{0xD2E0898765A7DEB2, 0xF8EBAD2B84E0D58B}, // 1e62
{0x63CC55F49F88EB2F, 0x9B934C3B330C8577}, // 1e63
{0x3CBF6B71C76B25FB, 0xC2781F49FFCFA6D5}, // 1e64
{0x8BEF464E3945EF7A, 0xF316271C7FC3908A}, // 1e65
{0x97758BF0E3CBB5AC, 0x97EDD871CFDA3A56}, // 1e66
{0x3D52EEED1CBEA317, 0xBDE94E8E43D0C8EC}, // 1e67
{0x4CA7AAA863EE4BDD, 0xED63A231D4C4FB27}, // 1e68
{0x8FE8CAA93E74EF6A, 0x945E455F24FB1CF8}, // 1e69
{0xB3E2FD538E122B44, 0xB975D6B6EE39E436}, // 1e70
{0x60DBBCA87196B616, 0xE7D34C64A9C85D44}, // 1e71
{0xBC8955E946FE31CD, 0x90E40FBEEA1D3A4A}, // 1e72
{0x6BABAB6398BDBE41, 0xB51D13AEA4A488DD}, // 1e73
{0xC696963C7EED2DD1, 0xE264589A4DCDAB14}, // 1e74
{0xFC1E1DE5CF543CA2, 0x8D7EB76070A08AEC}, // 1e75
{0x3B25A55F43294BCB, 0xB0DE65388CC8ADA8}, // 1e76
{0x49EF0EB713F39EBE, 0xDD15FE86AFFAD912}, // 1e77
{0x6E3569326C784337, 0x8A2DBF142DFCC7AB}, // 1e78
{0x49C2C37F07965404, 0xACB92ED9397BF996}, // 1e79
{0xDC33745EC97BE906, 0xD7E77A8F87DAF7FB}, // 1e80
{0x69A028BB3DED71A3, 0x86F0AC99B4E8DAFD}, // 1e81
{0xC40832EA0D68CE0C, 0xA8ACD7C0222311BC}, // 1e82
{0xF50A3FA490C30190, 0xD2D80DB02AABD62B}, // 1e83
{0x792667C6DA79E0FA, 0x83C7088E1AAB65DB}, // 1e84
{0x577001B891185938, 0xA4B8CAB1A1563F52}, // 1e85
{0xED4C0226B55E6F86, 0xCDE6FD5E09ABCF26}, // 1e86
{0x544F8158315B05B4, 0x80B05E5AC60B6178}, // 1e87
{0x696361AE3DB1C721, 0xA0DC75F1778E39D6}, // 1e88
{0x03BC3A19CD1E38E9, 0xC913936DD571C84C}, // 1e89
{0x04AB48A04065C723, 0xFB5878494ACE3A5F}, // 1e90
{0x62EB0D64283F9C76, 0x9D174B2DCEC0E47B}, // 1e91
{0x3BA5D0BD324F8394, 0xC45D1DF942711D9A}, // 1e92
{0xCA8F44EC7EE36479, 0xF5746577930D6500}, // 1e93
{0x7E998B13CF4E1ECB, 0x9968BF6ABBE85F20}, // 1e94
{0x9E3FEDD8C321A67E, 0xBFC2EF456AE276E8}, // 1e95
{0xC5CFE94EF3EA101E, 0xEFB3AB16C59B14A2}, // 1e96
{0xBBA1F1D158724A12, 0x95D04AEE3B80ECE5}, // 1e97
{0x2A8A6E45AE8EDC97, 0xBB445DA9CA61281F}, // 1e98
{0xF52D09D71A3293BD, 0xEA1575143CF97226}, // 1e99
{0x593C2626705F9C56, 0x924D692CA61BE758}, // 1e100
{0x6F8B2FB00C77836C, 0xB6E0C377CFA2E12E}, // 1e101
{0x0B6DFB9C0F956447, 0xE498F455C38B997A}, // 1e102
{0x4724BD4189BD5EAC, 0x8EDF98B59A373FEC}, // 1e103
{0x58EDEC91EC2CB657, 0xB2977EE300C50FE7}, // 1e104
{0x2F2967B66737E3ED, 0xDF3D5E9BC0F653E1}, // 1e105
{0xBD79E0D20082EE74, 0x8B865B215899F46C}, // 1e106
{0xECD8590680A3AA11, 0xAE67F1E9AEC07187}, // 1e107
{0xE80E6F4820CC9495, 0xDA01EE641A708DE9}, // 1e108
{0x3109058D147FDCDD, 0x884134FE908658B2}, // 1e109
{0xBD4B46F0599FD415, 0xAA51823E34A7EEDE}, // 1e110
{0x6C9E18AC7007C91A, 0xD4E5E2CDC1D1EA96}, // 1e111
{0x03E2CF6BC604DDB0, 0x850FADC09923329E}, // 1e112
{0x84DB8346B786151C, 0xA6539930BF6BFF45}, // 1e113
{0xE612641865679A63, 0xCFE87F7CEF46FF16}, // 1e114
{0x4FCB7E8F3F60C07E, 0x81F14FAE158C5F6E}, // 1e115
{0xE3BE5E330F38F09D, 0xA26DA3999AEF7749}, // 1e116
{0x5CADF5BFD3072CC5, 0xCB090C8001AB551C}, // 1e117
{0x73D9732FC7C8F7F6, 0xFDCB4FA002162A63}, // 1e118
{0x2867E7FDDCDD9AFA, 0x9E9F11C4014DDA7E}, // 1e119
{0xB281E1FD541501B8, 0xC646D63501A1511D}, // 1e120
{0x1F225A7CA91A4226, 0xF7D88BC24209A565}, // 1e121
{0x3375788DE9B06958, 0x9AE757596946075F}, // 1e122
{0x0052D6B1641C83AE, 0xC1A12D2FC3978937}, // 1e123
{0xC0678C5DBD23A49A, 0xF209787BB47D6B84}, // 1e124
{0xF840B7BA963646E0, 0x9745EB4D50CE6332}, // 1e125
{0xB650E5A93BC3D898, 0xBD176620A501FBFF}, // 1e126
{0xA3E51F138AB4CEBE, 0xEC5D3FA8CE427AFF}, // 1e127
{0xC66F336C36B10137, 0x93BA47C980E98CDF}, // 1e128
{0xB80B0047445D4184, 0xB8A8D9BBE123F017}, // 1e129
{0xA60DC059157491E5, 0xE6D3102AD96CEC1D}, // 1e130
{0x87C89837AD68DB2F, 0x9043EA1AC7E41392}, // 1e131
{0x29BABE4598C311FB, 0xB454E4A179DD1877}, // 1e132
{0xF4296DD6FEF3D67A, 0xE16A1DC9D8545E94}, // 1e133
{0x1899E4A65F58660C, 0x8CE2529E2734BB1D}, // 1e134
{0x5EC05DCFF72E7F8F, 0xB01AE745B101E9E4}, // 1e135
{0x76707543F4FA1F73, 0xDC21A1171D42645D}, // 1e136
{0x6A06494A791C53A8, 0x899504AE72497EBA}, // 1e137
{0x0487DB9D17636892, 0xABFA45DA0EDBDE69}, // 1e138
{0x45A9D2845D3C42B6, 0xD6F8D7509292D603}, // 1e139
{0x0B8A2392BA45A9B2, 0x865B86925B9BC5C2}, // 1e140
{0x8E6CAC7768D7141E, 0xA7F26836F282B732}, // 1e141
{0x3207D795430CD926, 0xD1EF0244AF2364FF}, // 1e142
{0x7F44E6BD49E807B8, 0x8335616AED761F1F}, // 1e143
{0x5F16206C9C6209A6, 0xA402B9C5A8D3A6E7}, // 1e144
{0x36DBA887C37A8C0F, 0xCD036837130890A1}, // 1e145
{0xC2494954DA2C9789, 0x802221226BE55A64}, // 1e146
{0xF2DB9BAA10B7BD6C, 0xA02AA96B06DEB0FD}, // 1e147
{0x6F92829494E5ACC7, 0xC83553C5C8965D3D}, // 1e148
{0xCB772339BA1F17F9, 0xFA42A8B73ABBF48C}, // 1e149
{0xFF2A760414536EFB, 0x9C69A97284B578D7}, // 1e150
{0xFEF5138519684ABA, 0xC38413CF25E2D70D}, // 1e151
{0x7EB258665FC25D69, 0xF46518C2EF5B8CD1}, // 1e152
{0xEF2F773FFBD97A61, 0x98BF2F79D5993802}, // 1e153
{0xAAFB550FFACFD8FA, 0xBEEEFB584AFF8603}, // 1e154
{0x95BA2A53F983CF38, 0xEEAABA2E5DBF6784}, // 1e155
{0xDD945A747BF26183, 0x952AB45CFA97A0B2}, // 1e156
{0x94F971119AEEF9E4, 0xBA756174393D88DF}, // 1e157
{0x7A37CD5601AAB85D, 0xE912B9D1478CEB17}, // 1e158
{0xAC62E055C10AB33A, 0x91ABB422CCB812EE}, // 1e159
{0x577B986B314D6009, 0xB616A12B7FE617AA}, // 1e160
{0xED5A7E85FDA0B80B, 0xE39C49765FDF9D94}, // 1e161
{0x14588F13BE847307, 0x8E41ADE9FBEBC27D}, // 1e162
{0x596EB2D8AE258FC8, 0xB1D219647AE6B31C}, // 1e163
{0x6FCA5F8ED9AEF3BB, 0xDE469FBD99A05FE3}, // 1e164
{0x25DE7BB9480D5854, 0x8AEC23D680043BEE}, // 1e165
{0xAF561AA79A10AE6A, 0xADA72CCC20054AE9}, // 1e166
{0x1B2BA1518094DA04, 0xD910F7FF28069DA4}, // 1e167
{0x90FB44D2F05D0842, 0x87AA9AFF79042286}, // 1e168
{0x353A1607AC744A53, 0xA99541BF57452B28}, // 1e169
{0x42889B8997915CE8, 0xD3FA922F2D1675F2}, // 1e170
{0x69956135FEBADA11, 0x847C9B5D7C2E09B7}, // 1e171
{0x43FAB9837E699095, 0xA59BC234DB398C25}, // 1e172
{0x94F967E45E03F4BB, 0xCF02B2C21207EF2E}, // 1e173
{0x1D1BE0EEBAC278F5, 0x8161AFB94B44F57D}, // 1e174
{0x6462D92A69731732, 0xA1BA1BA79E1632DC}, // 1e175
{0x7D7B8F7503CFDCFE, 0xCA28A291859BBF93}, // 1e176
{0x5CDA735244C3D43E, 0xFCB2CB35E702AF78}, // 1e177
{0x3A0888136AFA64A7, 0x9DEFBF01B061ADAB}, // 1e178
{0x088AAA1845B8FDD0, 0xC56BAEC21C7A1916}, // 1e179
{0x8AAD549E57273D45, 0xF6C69A72A3989F5B}, // 1e180
{0x36AC54E2F678864B, 0x9A3C2087A63F6399}, // 1e181
{0x84576A1BB416A7DD, 0xC0CB28A98FCF3C7F}, // 1e182
{0x656D44A2A11C51D5, 0xF0FDF2D3F3C30B9F}, // 1e183
{0x9F644AE5A4B1B325, 0x969EB7C47859E743}, // 1e184
{0x873D5D9F0DDE1FEE, 0xBC4665B596706114}, // 1e185
{0xA90CB506D155A7EA, 0xEB57FF22FC0C7959}, // 1e186
{0x09A7F12442D588F2, 0x9316FF75DD87CBD8}, // 1e187
{0x0C11ED6D538AEB2F, 0xB7DCBF5354E9BECE}, // 1e188
{0x8F1668C8A86DA5FA, 0xE5D3EF282A242E81}, // 1e189
{0xF96E017D694487BC, 0x8FA475791A569D10}, // 1e190
{0x37C981DCC395A9AC, 0xB38D92D760EC4455}, // 1e191
{0x85BBE253F47B1417, 0xE070F78D3927556A}, // 1e192
{0x93956D7478CCEC8E, 0x8C469AB843B89562}, // 1e193
{0x387AC8D1970027B2, 0xAF58416654A6BABB}, // 1e194
{0x06997B05FCC0319E, 0xDB2E51BFE9D0696A}, // 1e195
{0x441FECE3BDF81F03, 0x88FCF317F22241E2}, // 1e196
{0xD527E81CAD7626C3, 0xAB3C2FDDEEAAD25A}, // 1e197
{0x8A71E223D8D3B074, 0xD60B3BD56A5586F1}, // 1e198
{0xF6872D5667844E49, 0x85C7056562757456}, // 1e199
{0xB428F8AC016561DB, 0xA738C6BEBB12D16C}, // 1e200
{0xE13336D701BEBA52, 0xD106F86E69D785C7}, // 1e201
{0xECC0024661173473, 0x82A45B450226B39C}, // 1e202
{0x27F002D7F95D0190, 0xA34D721642B06084}, // 1e203
{0x31EC038DF7B441F4, 0xCC20CE9BD35C78A5}, // 1e204
{0x7E67047175A15271, 0xFF290242C83396CE}, // 1e205
{0x0F0062C6E984D386, 0x9F79A169BD203E41}, // 1e206
{0x52C07B78A3E60868, 0xC75809C42C684DD1}, // 1e207
{0xA7709A56CCDF8A82, 0xF92E0C3537826145}, // 1e208
{0x88A66076400BB691, 0x9BBCC7A142B17CCB}, // 1e209
{0x6ACFF893D00EA435, 0xC2ABF989935DDBFE}, // 1e210
{0x0583F6B8C4124D43, 0xF356F7EBF83552FE}, // 1e211
{0xC3727A337A8B704A, 0x98165AF37B2153DE}, // 1e212
{0x744F18C0592E4C5C, 0xBE1BF1B059E9A8D6}, // 1e213
{0x1162DEF06F79DF73, 0xEDA2EE1C7064130C}, // 1e214
{0x8ADDCB5645AC2BA8, 0x9485D4D1C63E8BE7}, // 1e215
{0x6D953E2BD7173692, 0xB9A74A0637CE2EE1}, // 1e216
{0xC8FA8DB6CCDD0437, 0xE8111C87C5C1BA99}, // 1e217
{0x1D9C9892400A22A2, 0x910AB1D4DB9914A0}, // 1e218
{0x2503BEB6D00CAB4B, 0xB54D5E4A127F59C8}, // 1e219
{0x2E44AE64840FD61D, 0xE2A0B5DC971F303A}, // 1e220
{0x5CEAECFED289E5D2, 0x8DA471A9DE737E24}, // 1e221
{0x7425A83E872C5F47, 0xB10D8E1456105DAD}, // 1e222
{0xD12F124E28F77719, 0xDD50F1996B947518}, // 1e223
{0x82BD6B70D99AAA6F, 0x8A5296FFE33CC92F}, // 1e224
{0x636CC64D1001550B, 0xACE73CBFDC0BFB7B}, // 1e225
{0x3C47F7E05401AA4E, 0xD8210BEFD30EFA5A}, // 1e226
{0x65ACFAEC34810A71, 0x8714A775E3E95C78}, // 1e227
{0x7F1839A741A14D0D, 0xA8D9D1535CE3B396}, // 1e228
{0x1EDE48111209A050, 0xD31045A8341CA07C}, // 1e229
{0x934AED0AAB460432, 0x83EA2B892091E44D}, // 1e230
{0xF81DA84D5617853F, 0xA4E4B66B68B65D60}, // 1e231
{0x36251260AB9D668E, 0xCE1DE40642E3F4B9}, // 1e232
{0xC1D72B7C6B426019, 0x80D2AE83E9CE78F3}, // 1e233
{0xB24CF65B8612F81F, 0xA1075A24E4421730}, // 1e234
{0xDEE033F26797B627, 0xC94930AE1D529CFC}, // 1e235
{0x169840EF017DA3B1, 0xFB9B7CD9A4A7443C}, // 1e236
{0x8E1F289560EE864E, 0x9D412E0806E88AA5}, // 1e237
{0xF1A6F2BAB92A27E2, 0xC491798A08A2AD4E}, // 1e238
{0xAE10AF696774B1DB, 0xF5B5D7EC8ACB58A2}, // 1e239
{0xACCA6DA1E0A8EF29, 0x9991A6F3D6BF1765}, // 1e240
{0x17FD090A58D32AF3, 0xBFF610B0CC6EDD3F}, // 1e241
{0xDDFC4B4CEF07F5B0, 0xEFF394DCFF8A948E}, // 1e242
{0x4ABDAF101564F98E, 0x95F83D0A1FB69CD9}, // 1e243
{0x9D6D1AD41ABE37F1, 0xBB764C4CA7A4440F}, // 1e244
{0x84C86189216DC5ED, 0xEA53DF5FD18D5513}, // 1e245
{0x32FD3CF5B4E49BB4, 0x92746B9BE2F8552C}, // 1e246
{0x3FBC8C33221DC2A1, 0xB7118682DBB66A77}, // 1e247
{0x0FABAF3FEAA5334A, 0xE4D5E82392A40515}, // 1e248
{0x29CB4D87F2A7400E, 0x8F05B1163BA6832D}, // 1e249
{0x743E20E9EF511012, 0xB2C71D5BCA9023F8}, // 1e250
{0x914DA9246B255416, 0xDF78E4B2BD342CF6}, // 1e251
{0x1AD089B6C2F7548E, 0x8BAB8EEFB6409C1A}, // 1e252
{0xA184AC2473B529B1, 0xAE9672ABA3D0C320}, // 1e253
{0xC9E5D72D90A2741E, 0xDA3C0F568CC4F3E8}, // 1e254
{0x7E2FA67C7A658892, 0x8865899617FB1871}, // 1e255
{0xDDBB901B98FEEAB7, 0xAA7EEBFB9DF9DE8D}, // 1e256
{0x552A74227F3EA565, 0xD51EA6FA85785631}, // 1e257
{0xD53A88958F87275F, 0x8533285C936B35DE}, // 1e258
{0x8A892ABAF368F137, 0xA67FF273B8460356}, // 1e259
{0x2D2B7569B0432D85, 0xD01FEF10A657842C}, // 1e260
{0x9C3B29620E29FC73, 0x8213F56A67F6B29B}, // 1e261
{0x8349F3BA91B47B8F, 0xA298F2C501F45F42}, // 1e262
{0x241C70A936219A73, 0xCB3F2F7642717713}, // 1e263
{0xED238CD383AA0110, 0xFE0EFB53D30DD4D7}, // 1e264
{0xF4363804324A40AA, 0x9EC95D1463E8A506}, // 1e265
{0xB143C6053EDCD0D5, 0xC67BB4597CE2CE48}, // 1e266
{0xDD94B7868E94050A, 0xF81AA16FDC1B81DA}, // 1e267
{0xCA7CF2B4191C8326, 0x9B10A4E5E9913128}, // 1e268
{0xFD1C2F611F63A3F0, 0xC1D4CE1F63F57D72}, // 1e269
{0xBC633B39673C8CEC, 0xF24A01A73CF2DCCF}, // 1e270
{0xD5BE0503E085D813, 0x976E41088617CA01}, // 1e271
{0x4B2D8644D8A74E18, 0xBD49D14AA79DBC82}, // 1e272
{0xDDF8E7D60ED1219E, 0xEC9C459D51852BA2}, // 1e273
{0xCABB90E5C942B503, 0x93E1AB8252F33B45}, // 1e274
{0x3D6A751F3B936243, 0xB8DA1662E7B00A17}, // 1e275
{0x0CC512670A783AD4, 0xE7109BFBA19C0C9D}, // 1e276
{0x27FB2B80668B24C5, 0x906A617D450187E2}, // 1e277
{0xB1F9F660802DEDF6, 0xB484F9DC9641E9DA}, // 1e278
{0x5E7873F8A0396973, 0xE1A63853BBD26451}, // 1e279
{0xDB0B487B6423E1E8, 0x8D07E33455637EB2}, // 1e280
{0x91CE1A9A3D2CDA62, 0xB049DC016ABC5E5F}, // 1e281
{0x7641A140CC7810FB, 0xDC5C5301C56B75F7}, // 1e282
{0xA9E904C87FCB0A9D, 0x89B9B3E11B6329BA}, // 1e283
{0x546345FA9FBDCD44, 0xAC2820D9623BF429}, // 1e284
{0xA97C177947AD4095, 0xD732290FBACAF133}, // 1e285
{0x49ED8EABCCCC485D, 0x867F59A9D4BED6C0}, // 1e286
{0x5C68F256BFFF5A74, 0xA81F301449EE8C70}, // 1e287
{0x73832EEC6FFF3111, 0xD226FC195C6A2F8C}, // 1e288
};
// wuffs_base__private_implementation__f64_powers_of_10 holds powers of 10 that
// can be exactly represented by a float64 (what C calls a double).
static const double wuffs_base__private_implementation__f64_powers_of_10[23] = {
1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9, 1e10, 1e11,
1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19, 1e20, 1e21, 1e22,
};
// ---------------- IEEE 754 Floating Point
WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u16 //
wuffs_base__ieee_754_bit_representation__from_f64_to_u16_truncate(double f) {
uint64_t u = 0;
if (sizeof(uint64_t) == sizeof(double)) {
memcpy(&u, &f, sizeof(uint64_t));
}
uint16_t neg = ((uint16_t)((u >> 63) << 15));
u &= 0x7FFFFFFFFFFFFFFF;
uint64_t exp = u >> 52;
uint64_t man = u & 0x000FFFFFFFFFFFFF;
if (exp == 0x7FF) {
if (man == 0) { // Infinity.
wuffs_base__lossy_value_u16 ret;
ret.value = neg | 0x7C00;
ret.lossy = false;
return ret;
}
// NaN. Shift the 52 mantissa bits to 10 mantissa bits, keeping the most
// significant mantissa bit (quiet vs signaling NaNs). Also set the low 9
// bits of ret.value so that the 10-bit mantissa is non-zero.
wuffs_base__lossy_value_u16 ret;
ret.value = neg | 0x7DFF | ((uint16_t)(man >> 42));
ret.lossy = false;
return ret;
} else if (exp > 0x40E) { // Truncate to the largest finite f16.
wuffs_base__lossy_value_u16 ret;
ret.value = neg | 0x7BFF;
ret.lossy = true;
return ret;
} else if (exp <= 0x3E6) { // Truncate to zero.
wuffs_base__lossy_value_u16 ret;
ret.value = neg;
ret.lossy = (u != 0);
return ret;
} else if (exp <= 0x3F0) { // Normal f64, subnormal f16.
// Convert from a 53-bit mantissa (after realizing the implicit bit) to a
// 10-bit mantissa and then adjust for the exponent.
man |= 0x0010000000000000;
uint32_t shift = ((uint32_t)(1051 - exp)); // 1051 = 0x3F0 + 53 - 10.
uint64_t shifted_man = man >> shift;
wuffs_base__lossy_value_u16 ret;
ret.value = neg | ((uint16_t)shifted_man);
ret.lossy = (shifted_man << shift) != man;
return ret;
}
// Normal f64, normal f16.
// Re-bias from 1023 to 15 and shift above f16's 10 mantissa bits.
exp = (exp - 1008) << 10; // 1008 = 1023 - 15 = 0x3FF - 0xF.
// Convert from a 52-bit mantissa (excluding the implicit bit) to a 10-bit
// mantissa (again excluding the implicit bit). We lose some information if
// any of the bottom 42 bits are non-zero.
wuffs_base__lossy_value_u16 ret;
ret.value = neg | ((uint16_t)exp) | ((uint16_t)(man >> 42));
ret.lossy = (man << 22) != 0;
return ret;
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u32 //
wuffs_base__ieee_754_bit_representation__from_f64_to_u32_truncate(double f) {
uint64_t u = 0;
if (sizeof(uint64_t) == sizeof(double)) {
memcpy(&u, &f, sizeof(uint64_t));
}
uint32_t neg = ((uint32_t)(u >> 63)) << 31;
u &= 0x7FFFFFFFFFFFFFFF;
uint64_t exp = u >> 52;
uint64_t man = u & 0x000FFFFFFFFFFFFF;
if (exp == 0x7FF) {
if (man == 0) { // Infinity.
wuffs_base__lossy_value_u32 ret;
ret.value = neg | 0x7F800000;
ret.lossy = false;
return ret;
}
// NaN. Shift the 52 mantissa bits to 23 mantissa bits, keeping the most
// significant mantissa bit (quiet vs signaling NaNs). Also set the low 22
// bits of ret.value so that the 23-bit mantissa is non-zero.
wuffs_base__lossy_value_u32 ret;
ret.value = neg | 0x7FBFFFFF | ((uint32_t)(man >> 29));
ret.lossy = false;
return ret;
} else if (exp > 0x47E) { // Truncate to the largest finite f32.
wuffs_base__lossy_value_u32 ret;
ret.value = neg | 0x7F7FFFFF;
ret.lossy = true;
return ret;
} else if (exp <= 0x369) { // Truncate to zero.
wuffs_base__lossy_value_u32 ret;
ret.value = neg;
ret.lossy = (u != 0);
return ret;
} else if (exp <= 0x380) { // Normal f64, subnormal f32.
// Convert from a 53-bit mantissa (after realizing the implicit bit) to a
// 23-bit mantissa and then adjust for the exponent.
man |= 0x0010000000000000;
uint32_t shift = ((uint32_t)(926 - exp)); // 926 = 0x380 + 53 - 23.
uint64_t shifted_man = man >> shift;
wuffs_base__lossy_value_u32 ret;
ret.value = neg | ((uint32_t)shifted_man);
ret.lossy = (shifted_man << shift) != man;
return ret;
}
// Normal f64, normal f32.
// Re-bias from 1023 to 127 and shift above f32's 23 mantissa bits.
exp = (exp - 896) << 23; // 896 = 1023 - 127 = 0x3FF - 0x7F.
// Convert from a 52-bit mantissa (excluding the implicit bit) to a 23-bit
// mantissa (again excluding the implicit bit). We lose some information if
// any of the bottom 29 bits are non-zero.
wuffs_base__lossy_value_u32 ret;
ret.value = neg | ((uint32_t)exp) | ((uint32_t)(man >> 29));
ret.lossy = (man << 35) != 0;
return ret;
}
// --------
#define WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE 2047
#define WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION 800
// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL is the largest N
// such that ((10 << N) < (1 << 64)).
#define WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL 60
// wuffs_base__private_implementation__high_prec_dec (abbreviated as HPD) is a
// fixed precision floating point decimal number, augmented with ยฑinfinity
// values, but it cannot represent NaN (Not a Number).
//
// "High precision" means that the mantissa holds 800 decimal digits. 800 is
// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION.
//
// An HPD isn't for general purpose arithmetic, only for conversions to and
// from IEEE 754 double-precision floating point, where the largest and
// smallest positive, finite values are approximately 1.8e+308 and 4.9e-324.
// HPD exponents above +2047 mean infinity, below -2047 mean zero. The ยฑ2047
// bounds are further away from zero than ยฑ(324 + 800), where 800 and 2047 is
// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION and
// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE.
//
// digits[.. num_digits] are the number's digits in big-endian order. The
// uint8_t values are in the range [0 ..= 9], not ['0' ..= '9'], where e.g. '7'
// is the ASCII value 0x37.
//
// decimal_point is the index (within digits) of the decimal point. It may be
// negative or be larger than num_digits, in which case the explicit digits are
// padded with implicit zeroes.
//
// For example, if num_digits is 3 and digits is "\x07\x08\x09":
// - A decimal_point of -2 means ".00789"
// - A decimal_point of -1 means ".0789"
// - A decimal_point of +0 means ".789"
// - A decimal_point of +1 means "7.89"
// - A decimal_point of +2 means "78.9"
// - A decimal_point of +3 means "789."
// - A decimal_point of +4 means "7890."
// - A decimal_point of +5 means "78900."
//
// As above, a decimal_point higher than +2047 means that the overall value is
// infinity, lower than -2047 means zero.
//
// negative is a sign bit. An HPD can distinguish positive and negative zero.
//
// truncated is whether there are more than
// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION digits, and at
// least one of those extra digits are non-zero. The existence of long-tail
// digits can affect rounding.
//
// The "all fields are zero" value is valid, and represents the number +0.
typedef struct wuffs_base__private_implementation__high_prec_dec__struct {
uint32_t num_digits;
int32_t decimal_point;
bool negative;
bool truncated;
uint8_t digits[WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION];
} wuffs_base__private_implementation__high_prec_dec;
// wuffs_base__private_implementation__high_prec_dec__trim trims trailing
// zeroes from the h->digits[.. h->num_digits] slice. They have no benefit,
// since we explicitly track h->decimal_point.
//
// Preconditions:
// - h is non-NULL.
static inline void //
wuffs_base__private_implementation__high_prec_dec__trim(
wuffs_base__private_implementation__high_prec_dec* h) {
while ((h->num_digits > 0) && (h->digits[h->num_digits - 1] == 0)) {
h->num_digits--;
}
}
// wuffs_base__private_implementation__high_prec_dec__assign sets h to
// represent the number x.
//
// Preconditions:
// - h is non-NULL.
static void //
wuffs_base__private_implementation__high_prec_dec__assign(
wuffs_base__private_implementation__high_prec_dec* h,
uint64_t x,
bool negative) {
uint32_t n = 0;
// Set h->digits.
if (x > 0) {
// Calculate the digits, working right-to-left. After we determine n (how
// many digits there are), copy from buf to h->digits.
//
// UINT64_MAX, 18446744073709551615, is 20 digits long. It can be faster to
// copy a constant number of bytes than a variable number (20 instead of
// n). Make buf large enough (and start writing to it from the middle) so
// that can we always copy 20 bytes: the slice buf[(20-n) .. (40-n)].
uint8_t buf[40] = {0};
uint8_t* ptr = &buf[20];
do {
uint64_t remaining = x / 10;
x -= remaining * 10;
ptr--;
*ptr = (uint8_t)x;
n++;
x = remaining;
} while (x > 0);
memcpy(h->digits, ptr, 20);
}
// Set h's other fields.
h->num_digits = n;
h->decimal_point = (int32_t)n;
h->negative = negative;
h->truncated = false;
wuffs_base__private_implementation__high_prec_dec__trim(h);
}
static wuffs_base__status //
wuffs_base__private_implementation__high_prec_dec__parse(
wuffs_base__private_implementation__high_prec_dec* h,
wuffs_base__slice_u8 s,
uint32_t options) {
if (!h) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
h->num_digits = 0;
h->decimal_point = 0;
h->negative = false;
h->truncated = false;
uint8_t* p = s.ptr;
uint8_t* q = s.ptr + s.len;
if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
for (;; p++) {
if (p >= q) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
} else if (*p != '_') {
break;
}
}
}
// Parse sign.
do {
if (*p == '+') {
p++;
} else if (*p == '-') {
h->negative = true;
p++;
} else {
break;
}
if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
for (;; p++) {
if (p >= q) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
} else if (*p != '_') {
break;
}
}
}
} while (0);
// Parse digits, up to (and including) a '.', 'E' or 'e'. Examples for each
// limb in this if-else chain:
// - "0.789"
// - "1002.789"
// - ".789"
// - Other (invalid input).
uint32_t nd = 0;
int32_t dp = 0;
bool no_digits_before_separator = false;
if (('0' == *p) &&
!(options &
WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES)) {
p++;
for (;; p++) {
if (p >= q) {
goto after_all;
} else if (*p ==
((options &
WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
? ','
: '.')) {
p++;
goto after_sep;
} else if ((*p == 'E') || (*p == 'e')) {
p++;
goto after_exp;
} else if ((*p != '_') ||
!(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
}
} else if (('0' <= *p) && (*p <= '9')) {
if (*p == '0') {
for (; (p < q) && (*p == '0'); p++) {
}
} else {
h->digits[nd++] = (uint8_t)(*p - '0');
dp = (int32_t)nd;
p++;
}
for (;; p++) {
if (p >= q) {
goto after_all;
} else if (('0' <= *p) && (*p <= '9')) {
if (nd < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
h->digits[nd++] = (uint8_t)(*p - '0');
dp = (int32_t)nd;
} else if ('0' != *p) {
// Long-tail non-zeroes set the truncated bit.
h->truncated = true;
}
} else if (*p ==
((options &
WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
? ','
: '.')) {
p++;
goto after_sep;
} else if ((*p == 'E') || (*p == 'e')) {
p++;
goto after_exp;
} else if ((*p != '_') ||
!(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
}
} else if (*p == ((options &
WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
? ','
: '.')) {
p++;
no_digits_before_separator = true;
} else {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
after_sep:
for (;; p++) {
if (p >= q) {
goto after_all;
} else if ('0' == *p) {
if (nd == 0) {
// Track leading zeroes implicitly.
dp--;
} else if (nd <
WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
h->digits[nd++] = (uint8_t)(*p - '0');
}
} else if (('0' < *p) && (*p <= '9')) {
if (nd < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
h->digits[nd++] = (uint8_t)(*p - '0');
} else {
// Long-tail non-zeroes set the truncated bit.
h->truncated = true;
}
} else if ((*p == 'E') || (*p == 'e')) {
p++;
goto after_exp;
} else if ((*p != '_') ||
!(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
}
after_exp:
do {
if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
for (;; p++) {
if (p >= q) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
} else if (*p != '_') {
break;
}
}
}
int32_t exp_sign = +1;
if (*p == '+') {
p++;
} else if (*p == '-') {
exp_sign = -1;
p++;
}
int32_t exp = 0;
const int32_t exp_large =
WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE +
WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION;
bool saw_exp_digits = false;
for (; p < q; p++) {
if ((*p == '_') &&
(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
// No-op.
} else if (('0' <= *p) && (*p <= '9')) {
saw_exp_digits = true;
if (exp < exp_large) {
exp = (10 * exp) + ((int32_t)(*p - '0'));
}
} else {
break;
}
}
if (!saw_exp_digits) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
dp += exp_sign * exp;
} while (0);
after_all:
if (p != q) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
h->num_digits = nd;
if (nd == 0) {
if (no_digits_before_separator) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
h->decimal_point = 0;
} else if (dp <
-WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) {
h->decimal_point =
-WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE - 1;
} else if (dp >
+WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) {
h->decimal_point =
+WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE + 1;
} else {
h->decimal_point = dp;
}
wuffs_base__private_implementation__high_prec_dec__trim(h);
return wuffs_base__make_status(NULL);
}
// --------
// wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits
// returns the number of additional decimal digits when left-shifting by shift.
//
// See below for preconditions.
static uint32_t //
wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits(
wuffs_base__private_implementation__high_prec_dec* h,
uint32_t shift) {
// Masking with 0x3F should be unnecessary (assuming the preconditions) but
// it's cheap and ensures that we don't overflow the
// wuffs_base__private_implementation__hpd_left_shift array.
shift &= 63;
uint32_t x_a = wuffs_base__private_implementation__hpd_left_shift[shift];
uint32_t x_b = wuffs_base__private_implementation__hpd_left_shift[shift + 1];
uint32_t num_new_digits = x_a >> 11;
uint32_t pow5_a = 0x7FF & x_a;
uint32_t pow5_b = 0x7FF & x_b;
const uint8_t* pow5 =
&wuffs_base__private_implementation__powers_of_5[pow5_a];
uint32_t i = 0;
uint32_t n = pow5_b - pow5_a;
for (; i < n; i++) {
if (i >= h->num_digits) {
return num_new_digits - 1;
} else if (h->digits[i] == pow5[i]) {
continue;
} else if (h->digits[i] < pow5[i]) {
return num_new_digits - 1;
} else {
return num_new_digits;
}
}
return num_new_digits;
}
// --------
// wuffs_base__private_implementation__high_prec_dec__rounded_integer returns
// the integral (non-fractional) part of h, provided that it is 18 or fewer
// decimal digits. For 19 or more digits, it returns UINT64_MAX. Note that:
// - (1 << 53) is 9007199254740992, which has 16 decimal digits.
// - (1 << 56) is 72057594037927936, which has 17 decimal digits.
// - (1 << 59) is 576460752303423488, which has 18 decimal digits.
// - (1 << 63) is 9223372036854775808, which has 19 decimal digits.
// and that IEEE 754 double precision has 52 mantissa bits.
//
// That integral part is rounded-to-even: rounding 7.5 or 8.5 both give 8.
//
// h's negative bit is ignored: rounding -8.6 returns 9.
//
// See below for preconditions.
static uint64_t //
wuffs_base__private_implementation__high_prec_dec__rounded_integer(
wuffs_base__private_implementation__high_prec_dec* h) {
if ((h->num_digits == 0) || (h->decimal_point < 0)) {
return 0;
} else if (h->decimal_point > 18) {
return UINT64_MAX;
}
uint32_t dp = (uint32_t)(h->decimal_point);
uint64_t n = 0;
uint32_t i = 0;
for (; i < dp; i++) {
n = (10 * n) + ((i < h->num_digits) ? h->digits[i] : 0);
}
bool round_up = false;
if (dp < h->num_digits) {
round_up = h->digits[dp] >= 5;
if ((h->digits[dp] == 5) && (dp + 1 == h->num_digits)) {
// We are exactly halfway. If we're truncated, round up, otherwise round
// to even.
round_up = h->truncated || //
((dp > 0) && (1 & h->digits[dp - 1]));
}
}
if (round_up) {
n++;
}
return n;
}
// wuffs_base__private_implementation__high_prec_dec__small_xshift shifts h's
// number (where 'x' is 'l' or 'r' for left or right) by a small shift value.
//
// Preconditions:
// - h is non-NULL.
// - h->decimal_point is "not extreme".
// - shift is non-zero.
// - shift is "a small shift".
//
// "Not extreme" means within
// ยฑWUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE.
//
// "A small shift" means not more than
// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL.
//
// wuffs_base__private_implementation__high_prec_dec__rounded_integer and
// wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits
// have the same preconditions.
//
// wuffs_base__private_implementation__high_prec_dec__lshift keeps the first
// two preconditions but not the last two. Its shift argument is signed and
// does not need to be "small": zero is a no-op, positive means left shift and
// negative means right shift.
static void //
wuffs_base__private_implementation__high_prec_dec__small_lshift(
wuffs_base__private_implementation__high_prec_dec* h,
uint32_t shift) {
if (h->num_digits == 0) {
return;
}
uint32_t num_new_digits =
wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits(
h, shift);
uint32_t rx = h->num_digits - 1; // Read index.
uint32_t wx = h->num_digits - 1 + num_new_digits; // Write index.
uint64_t n = 0;
// Repeat: pick up a digit, put down a digit, right to left.
while (((int32_t)rx) >= 0) {
n += ((uint64_t)(h->digits[rx])) << shift;
uint64_t quo = n / 10;
uint64_t rem = n - (10 * quo);
if (wx < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
h->digits[wx] = (uint8_t)rem;
} else if (rem > 0) {
h->truncated = true;
}
n = quo;
wx--;
rx--;
}
// Put down leading digits, right to left.
while (n > 0) {
uint64_t quo = n / 10;
uint64_t rem = n - (10 * quo);
if (wx < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
h->digits[wx] = (uint8_t)rem;
} else if (rem > 0) {
h->truncated = true;
}
n = quo;
wx--;
}
// Finish.
h->num_digits += num_new_digits;
if (h->num_digits >
WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
h->num_digits = WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION;
}
h->decimal_point += (int32_t)num_new_digits;
wuffs_base__private_implementation__high_prec_dec__trim(h);
}
static void //
wuffs_base__private_implementation__high_prec_dec__small_rshift(
wuffs_base__private_implementation__high_prec_dec* h,
uint32_t shift) {
uint32_t rx = 0; // Read index.
uint32_t wx = 0; // Write index.
uint64_t n = 0;
// Pick up enough leading digits to cover the first shift.
while ((n >> shift) == 0) {
if (rx < h->num_digits) {
// Read a digit.
n = (10 * n) + h->digits[rx++];
} else if (n == 0) {
// h's number used to be zero and remains zero.
return;
} else {
// Read sufficient implicit trailing zeroes.
while ((n >> shift) == 0) {
n = 10 * n;
rx++;
}
break;
}
}
h->decimal_point -= ((int32_t)(rx - 1));
if (h->decimal_point <
-WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) {
// After the shift, h's number is effectively zero.
h->num_digits = 0;
h->decimal_point = 0;
h->truncated = false;
return;
}
// Repeat: pick up a digit, put down a digit, left to right.
uint64_t mask = (((uint64_t)(1)) << shift) - 1;
while (rx < h->num_digits) {
uint8_t new_digit = ((uint8_t)(n >> shift));
n = (10 * (n & mask)) + h->digits[rx++];
h->digits[wx++] = new_digit;
}
// Put down trailing digits, left to right.
while (n > 0) {
uint8_t new_digit = ((uint8_t)(n >> shift));
n = 10 * (n & mask);
if (wx < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) {
h->digits[wx++] = new_digit;
} else if (new_digit > 0) {
h->truncated = true;
}
}
// Finish.
h->num_digits = wx;
wuffs_base__private_implementation__high_prec_dec__trim(h);
}
static void //
wuffs_base__private_implementation__high_prec_dec__lshift(
wuffs_base__private_implementation__high_prec_dec* h,
int32_t shift) {
if (shift > 0) {
while (shift > +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL) {
wuffs_base__private_implementation__high_prec_dec__small_lshift(
h, WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL);
shift -= WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL;
}
wuffs_base__private_implementation__high_prec_dec__small_lshift(
h, ((uint32_t)(+shift)));
} else if (shift < 0) {
while (shift < -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL) {
wuffs_base__private_implementation__high_prec_dec__small_rshift(
h, WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL);
shift += WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL;
}
wuffs_base__private_implementation__high_prec_dec__small_rshift(
h, ((uint32_t)(-shift)));
}
}
// --------
// wuffs_base__private_implementation__high_prec_dec__round_etc rounds h's
// number. For those functions that take an n argument, rounding produces at
// most n digits (which is not necessarily at most n decimal places). Negative
// n values are ignored, as well as any n greater than or equal to h's number
// of digits. The etc__round_just_enough function implicitly chooses an n to
// implement WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION.
//
// Preconditions:
// - h is non-NULL.
// - h->decimal_point is "not extreme".
//
// "Not extreme" means within
// ยฑWUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE.
static void //
wuffs_base__private_implementation__high_prec_dec__round_down(
wuffs_base__private_implementation__high_prec_dec* h,
int32_t n) {
if ((n < 0) || (h->num_digits <= (uint32_t)n)) {
return;
}
h->num_digits = (uint32_t)(n);
wuffs_base__private_implementation__high_prec_dec__trim(h);
}
static void //
wuffs_base__private_implementation__high_prec_dec__round_up(
wuffs_base__private_implementation__high_prec_dec* h,
int32_t n) {
if ((n < 0) || (h->num_digits <= (uint32_t)n)) {
return;
}
for (n--; n >= 0; n--) {
if (h->digits[n] < 9) {
h->digits[n]++;
h->num_digits = (uint32_t)(n + 1);
return;
}
}
// The number is all 9s. Change to a single 1 and adjust the decimal point.
h->digits[0] = 1;
h->num_digits = 1;
h->decimal_point++;
}
static void //
wuffs_base__private_implementation__high_prec_dec__round_nearest(
wuffs_base__private_implementation__high_prec_dec* h,
int32_t n) {
if ((n < 0) || (h->num_digits <= (uint32_t)n)) {
return;
}
bool up = h->digits[n] >= 5;
if ((h->digits[n] == 5) && ((n + 1) == ((int32_t)(h->num_digits)))) {
up = h->truncated || //
((n > 0) && ((h->digits[n - 1] & 1) != 0));
}
if (up) {
wuffs_base__private_implementation__high_prec_dec__round_up(h, n);
} else {
wuffs_base__private_implementation__high_prec_dec__round_down(h, n);
}
}
static void //
wuffs_base__private_implementation__high_prec_dec__round_just_enough(
wuffs_base__private_implementation__high_prec_dec* h,
int32_t exp2,
uint64_t mantissa) {
// The magic numbers 52 and 53 in this function are because IEEE 754 double
// precision has 52 mantissa bits.
//
// Let f be the floating point number represented by exp2 and mantissa (and
// also the number in h): the number (mantissa * (2 ** (exp2 - 52))).
//
// If f is zero or a small integer, we can return early.
if ((mantissa == 0) ||
((exp2 < 53) && (h->decimal_point >= ((int32_t)(h->num_digits))))) {
return;
}
// The smallest normal f has an exp2 of -1022 and a mantissa of (1 << 52).
// Subnormal numbers have the same exp2 but a smaller mantissa.
static const int32_t min_incl_normal_exp2 = -1022;
static const uint64_t min_incl_normal_mantissa = 0x0010000000000000ul;
// Compute lower and upper bounds such that any number between them (possibly
// inclusive) will round to f. First, the lower bound. Our number f is:
// ((mantissa + 0) * (2 ** ( exp2 - 52)))
//
// The next lowest floating point number is:
// ((mantissa - 1) * (2 ** ( exp2 - 52)))
// unless (mantissa - 1) drops the (1 << 52) bit and exp2 is not the
// min_incl_normal_exp2. Either way, call it:
// ((l_mantissa) * (2 ** (l_exp2 - 52)))
//
// The lower bound is halfway between them (noting that 52 became 53):
// (((2 * l_mantissa) + 1) * (2 ** (l_exp2 - 53)))
int32_t l_exp2 = exp2;
uint64_t l_mantissa = mantissa - 1;
if ((exp2 > min_incl_normal_exp2) && (mantissa <= min_incl_normal_mantissa)) {
l_exp2 = exp2 - 1;
l_mantissa = (2 * mantissa) - 1;
}
wuffs_base__private_implementation__high_prec_dec lower;
wuffs_base__private_implementation__high_prec_dec__assign(
&lower, (2 * l_mantissa) + 1, false);
wuffs_base__private_implementation__high_prec_dec__lshift(&lower,
l_exp2 - 53);
// Next, the upper bound. Our number f is:
// ((mantissa + 0) * (2 ** (exp2 - 52)))
//
// The next highest floating point number is:
// ((mantissa + 1) * (2 ** (exp2 - 52)))
//
// The upper bound is halfway between them (noting that 52 became 53):
// (((2 * mantissa) + 1) * (2 ** (exp2 - 53)))
wuffs_base__private_implementation__high_prec_dec upper;
wuffs_base__private_implementation__high_prec_dec__assign(
&upper, (2 * mantissa) + 1, false);
wuffs_base__private_implementation__high_prec_dec__lshift(&upper, exp2 - 53);
// The lower and upper bounds are possible outputs only if the original
// mantissa is even, so that IEEE round-to-even would round to the original
// mantissa and not its neighbors.
bool inclusive = (mantissa & 1) == 0;
// As we walk the digits, we want to know whether rounding up would fall
// within the upper bound. This is tracked by upper_delta:
// - When -1, the digits of h and upper are the same so far.
// - When +0, we saw a difference of 1 between h and upper on a previous
// digit and subsequently only 9s for h and 0s for upper. Thus, rounding
// up may fall outside of the bound if !inclusive.
// - When +1, the difference is greater than 1 and we know that rounding up
// falls within the bound.
//
// This is a state machine with three states. The numerical value for each
// state (-1, +0 or +1) isn't important, other than their order.
int upper_delta = -1;
// We can now figure out the shortest number of digits required. Walk the
// digits until h has distinguished itself from lower or upper.
//
// The zi and zd variables are indexes and digits, for z in l (lower), h (the
// number) and u (upper).
//
// The lower, h and upper numbers may have their decimal points at different
// places. In this case, upper is the longest, so we iterate ui starting from
// 0 and iterate li and hi starting from either 0 or -1.
int32_t ui = 0;
for (;; ui++) {
// Calculate hd, the middle number's digit.
int32_t hi = ui - upper.decimal_point + h->decimal_point;
if (hi >= ((int32_t)(h->num_digits))) {
break;
}
uint8_t hd = (((uint32_t)hi) < h->num_digits) ? h->digits[hi] : 0;
// Calculate ld, the lower bound's digit.
int32_t li = ui - upper.decimal_point + lower.decimal_point;
uint8_t ld = (((uint32_t)li) < lower.num_digits) ? lower.digits[li] : 0;
// We can round down (truncate) if lower has a different digit than h or if
// lower is inclusive and is exactly the result of rounding down (i.e. we
// have reached the final digit of lower).
bool can_round_down =
(ld != hd) || //
(inclusive && ((li + 1) == ((int32_t)(lower.num_digits))));
// Calculate ud, the upper bound's digit, and update upper_delta.
uint8_t ud = (((uint32_t)ui) < upper.num_digits) ? upper.digits[ui] : 0;
if (upper_delta < 0) {
if ((hd + 1) < ud) {
// For example:
// h = 12345???
// upper = 12347???
upper_delta = +1;
} else if (hd != ud) {
// For example:
// h = 12345???
// upper = 12346???
upper_delta = +0;
}
} else if (upper_delta == 0) {
if ((hd != 9) || (ud != 0)) {
// For example:
// h = 1234598?
// upper = 1234600?
upper_delta = +1;
}
}
// We can round up if upper has a different digit than h and either upper
// is inclusive or upper is bigger than the result of rounding up.
bool can_round_up =
(upper_delta > 0) || //
((upper_delta == 0) && //
(inclusive || ((ui + 1) < ((int32_t)(upper.num_digits)))));
// If we can round either way, round to nearest. If we can round only one
// way, do it. If we can't round, continue the loop.
if (can_round_down) {
if (can_round_up) {
wuffs_base__private_implementation__high_prec_dec__round_nearest(
h, hi + 1);
return;
} else {
wuffs_base__private_implementation__high_prec_dec__round_down(h,
hi + 1);
return;
}
} else {
if (can_round_up) {
wuffs_base__private_implementation__high_prec_dec__round_up(h, hi + 1);
return;
}
}
}
}
// --------
// wuffs_base__private_implementation__parse_number_f64_eisel_lemire produces
// the IEEE 754 double-precision value for an exact mantissa and base-10
// exponent. For example:
// - when parsing "12345.678e+02", man is 12345678 and exp10 is -1.
// - when parsing "-12", man is 12 and exp10 is 0. Processing the leading
// minus sign is the responsibility of the caller, not this function.
//
// On success, it returns a non-negative int64_t such that the low 63 bits hold
// the 11-bit exponent and 52-bit mantissa.
//
// On failure, it returns a negative value.
//
// The algorithm is based on an original idea by Michael Eisel that was refined
// by Daniel Lemire. See
// https://lemire.me/blog/2020/03/10/fast-float-parsing-in-practice/
// and
// https://nigeltao.github.io/blog/2020/eisel-lemire.html
//
// Preconditions:
// - man is non-zero.
// - exp10 is in the range [-307 ..= 288], the same range of the
// wuffs_base__private_implementation__powers_of_10 array.
//
// The exp10 range (and the fact that man is in the range [1 ..= UINT64_MAX],
// approximately [1 ..= 1.85e+19]) means that (man * (10 ** exp10)) is in the
// range [1e-307 ..= 1.85e+307]. This is entirely within the range of normal
// (neither subnormal nor non-finite) f64 values: DBL_MIN and DBL_MAX are
// approximately 2.23eโ€“308 and 1.80e+308.
static int64_t //
wuffs_base__private_implementation__parse_number_f64_eisel_lemire(
uint64_t man,
int32_t exp10) {
// Look up the (possibly truncated) base-2 representation of (10 ** exp10).
// The look-up table was constructed so that it is already normalized: the
// table entry's mantissa's MSB (most significant bit) is on.
const uint64_t* po10 =
&wuffs_base__private_implementation__powers_of_10[exp10 + 307][0];
// Normalize the man argument. The (man != 0) precondition means that a
// non-zero bit exists.
uint32_t clz = wuffs_base__count_leading_zeroes_u64(man);
man <<= clz;
// Calculate the return value's base-2 exponent. We might tweak it by ยฑ1
// later, but its initial value comes from a linear scaling of exp10,
// converting from power-of-10 to power-of-2, and adjusting by clz.
//
// The magic constants are:
// - 1087 = 1023 + 64. The 1023 is the f64 exponent bias. The 64 is because
// the look-up table uses 64-bit mantissas.
// - 217706 is such that the ratio 217706 / 65536 โ‰ˆ 3.321930 is close enough
// (over the practical range of exp10) to log(10) / log(2) โ‰ˆ 3.321928.
// - 65536 = 1<<16 is arbitrary but a power of 2, so division is a shift.
//
// Equality of the linearly-scaled value and the actual power-of-2, over the
// range of exp10 arguments that this function accepts, is confirmed by
// script/print-mpb-powers-of-10.go
uint64_t ret_exp2 =
((uint64_t)(((217706 * exp10) >> 16) + 1087)) - ((uint64_t)clz);
// Multiply the two mantissas. Normalization means that both mantissas are at
// least (1<<63), so the 128-bit product must be at least (1<<126). The high
// 64 bits of the product, x_hi, must therefore be at least (1<<62).
//
// As a consequence, x_hi has either 0 or 1 leading zeroes. Shifting x_hi
// right by either 9 or 10 bits (depending on x_hi's MSB) will therefore
// leave the top 10 MSBs (bits 54 ..= 63) off and the 11th MSB (bit 53) on.
wuffs_base__multiply_u64__output x = wuffs_base__multiply_u64(man, po10[1]);
uint64_t x_hi = x.hi;
uint64_t x_lo = x.lo;
// Before we shift right by at least 9 bits, recall that the look-up table
// entry was possibly truncated. We have so far only calculated a lower bound
// for the product (man * e), where e is (10 ** exp10). The upper bound would
// add a further (man * 1) to the 128-bit product, which overflows the lower
// 64-bit limb if ((x_lo + man) < man).
//
// If overflow occurs, that adds 1 to x_hi. Since we're about to shift right
// by at least 9 bits, that carried 1 can be ignored unless the higher 64-bit
// limb's low 9 bits are all on.
//
// For example, parsing "9999999999999999999" will take the if-true branch
// here, since:
// - x_hi = 0x4563918244F3FFFF
// - x_lo = 0x8000000000000000
// - man = 0x8AC7230489E7FFFF
if (((x_hi & 0x1FF) == 0x1FF) && ((x_lo + man) < man)) {
// Refine our calculation of (man * e). Before, our approximation of e used
// a "low resolution" 64-bit mantissa. Now use a "high resolution" 128-bit
// mantissa. We've already calculated x = (man * bits_0_to_63_incl_of_e).
// Now calculate y = (man * bits_64_to_127_incl_of_e).
wuffs_base__multiply_u64__output y = wuffs_base__multiply_u64(man, po10[0]);
uint64_t y_hi = y.hi;
uint64_t y_lo = y.lo;
// Merge the 128-bit x and 128-bit y, which overlap by 64 bits, to
// calculate the 192-bit product of the 64-bit man by the 128-bit e.
// As we exit this if-block, we only care about the high 128 bits
// (merged_hi and merged_lo) of that 192-bit product.
//
// For example, parsing "1.234e-45" will take the if-true branch here,
// since:
// - x_hi = 0x70B7E3696DB29FFF
// - x_lo = 0xE040000000000000
// - y_hi = 0x33718BBEAB0E0D7A
// - y_lo = 0xA880000000000000
uint64_t merged_hi = x_hi;
uint64_t merged_lo = x_lo + y_hi;
if (merged_lo < x_lo) {
merged_hi++; // Carry the overflow bit.
}
// The "high resolution" approximation of e is still a lower bound. Once
// again, see if the upper bound is large enough to produce a different
// result. This time, if it does, give up instead of reaching for an even
// more precise approximation to e.
//
// This three-part check is similar to the two-part check that guarded the
// if block that we're now in, but it has an extra term for the middle 64
// bits (checking that adding 1 to merged_lo would overflow).
//
// For example, parsing "5.9604644775390625e-8" will take the if-true
// branch here, since:
// - merged_hi = 0x7FFFFFFFFFFFFFFF
// - merged_lo = 0xFFFFFFFFFFFFFFFF
// - y_lo = 0x4DB3FFC120988200
// - man = 0xD3C21BCECCEDA100
if (((merged_hi & 0x1FF) == 0x1FF) && ((merged_lo + 1) == 0) &&
(y_lo + man < man)) {
return -1;
}
// Replace the 128-bit x with merged.
x_hi = merged_hi;
x_lo = merged_lo;
}
// As mentioned above, shifting x_hi right by either 9 or 10 bits will leave
// the top 10 MSBs (bits 54 ..= 63) off and the 11th MSB (bit 53) on. If the
// MSB (before shifting) was on, adjust ret_exp2 for the larger shift.
//
// Having bit 53 on (and higher bits off) means that ret_mantissa is a 54-bit
// number.
uint64_t msb = x_hi >> 63;
uint64_t ret_mantissa = x_hi >> (msb + 9);
ret_exp2 -= 1 ^ msb;
// IEEE 754 rounds to-nearest with ties rounded to-even. Rounding to-even can
// be tricky. If we're half-way between two exactly representable numbers
// (x's low 73 bits are zero and the next 2 bits that matter are "01"), give
// up instead of trying to pick the winner.
//
// Technically, we could tighten the condition by changing "73" to "73 or 74,
// depending on msb", but a flat "73" is simpler.
//
// For example, parsing "1e+23" will take the if-true branch here, since:
// - x_hi = 0x54B40B1F852BDA00
// - ret_mantissa = 0x002A5A058FC295ED
if ((x_lo == 0) && ((x_hi & 0x1FF) == 0) && ((ret_mantissa & 3) == 1)) {
return -1;
}
// If we're not halfway then it's rounding to-nearest. Starting with a 54-bit
// number, carry the lowest bit (bit 0) up if it's on. Regardless of whether
// it was on or off, shifting right by one then produces a 53-bit number. If
// carrying up overflowed, shift again.
ret_mantissa += ret_mantissa & 1;
ret_mantissa >>= 1;
// This if block is equivalent to (but benchmarks slightly faster than) the
// following branchless form:
// uint64_t overflow_adjustment = ret_mantissa >> 53;
// ret_mantissa >>= overflow_adjustment;
// ret_exp2 += overflow_adjustment;
//
// For example, parsing "7.2057594037927933e+16" will take the if-true
// branch here, since:
// - x_hi = 0x7FFFFFFFFFFFFE80
// - ret_mantissa = 0x0020000000000000
if ((ret_mantissa >> 53) > 0) {
ret_mantissa >>= 1;
ret_exp2++;
}
// Starting with a 53-bit number, IEEE 754 double-precision normal numbers
// have an implicit mantissa bit. Mask that away and keep the low 52 bits.
ret_mantissa &= 0x000FFFFFFFFFFFFF;
// Pack the bits and return.
return ((int64_t)(ret_mantissa | (ret_exp2 << 52)));
}
// --------
static wuffs_base__result_f64 //
wuffs_base__private_implementation__parse_number_f64_special(
wuffs_base__slice_u8 s,
uint32_t options) {
do {
if (options & WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN) {
goto fail;
}
uint8_t* p = s.ptr;
uint8_t* q = s.ptr + s.len;
for (; (p < q) && (*p == '_'); p++) {
}
if (p >= q) {
goto fail;
}
// Parse sign.
bool negative = false;
do {
if (*p == '+') {
p++;
} else if (*p == '-') {
negative = true;
p++;
} else {
break;
}
for (; (p < q) && (*p == '_'); p++) {
}
} while (0);
if (p >= q) {
goto fail;
}
bool nan = false;
switch (p[0]) {
case 'I':
case 'i':
if (((q - p) < 3) || //
((p[1] != 'N') && (p[1] != 'n')) || //
((p[2] != 'F') && (p[2] != 'f'))) {
goto fail;
}
p += 3;
if ((p >= q) || (*p == '_')) {
break;
} else if (((q - p) < 5) || //
((p[0] != 'I') && (p[0] != 'i')) || //
((p[1] != 'N') && (p[1] != 'n')) || //
((p[2] != 'I') && (p[2] != 'i')) || //
((p[3] != 'T') && (p[3] != 't')) || //
((p[4] != 'Y') && (p[4] != 'y'))) {
goto fail;
}
p += 5;
if ((p >= q) || (*p == '_')) {
break;
}
goto fail;
case 'N':
case 'n':
if (((q - p) < 3) || //
((p[1] != 'A') && (p[1] != 'a')) || //
((p[2] != 'N') && (p[2] != 'n'))) {
goto fail;
}
p += 3;
if ((p >= q) || (*p == '_')) {
nan = true;
break;
}
goto fail;
default:
goto fail;
}
// Finish.
for (; (p < q) && (*p == '_'); p++) {
}
if (p != q) {
goto fail;
}
wuffs_base__result_f64 ret;
ret.status.repr = NULL;
ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
(nan ? 0x7FFFFFFFFFFFFFFF : 0x7FF0000000000000) |
(negative ? 0x8000000000000000 : 0));
return ret;
} while (0);
fail:
do {
wuffs_base__result_f64 ret;
ret.status.repr = wuffs_base__error__bad_argument;
ret.value = 0;
return ret;
} while (0);
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64 //
wuffs_base__private_implementation__high_prec_dec__to_f64(
wuffs_base__private_implementation__high_prec_dec* h,
uint32_t options) {
do {
// powers converts decimal powers of 10 to binary powers of 2. For example,
// (10000 >> 13) is 1. It stops before the elements exceed 60, also known
// as WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL.
static const uint32_t num_powers = 19;
static const uint8_t powers[19] = {
0, 3, 6, 9, 13, 16, 19, 23, 26, 29, //
33, 36, 39, 43, 46, 49, 53, 56, 59, //
};
// Handle zero and obvious extremes. The largest and smallest positive
// finite f64 values are approximately 1.8e+308 and 4.9e-324.
if ((h->num_digits == 0) || (h->decimal_point < -326)) {
goto zero;
} else if (h->decimal_point > 310) {
goto infinity;
}
// Try the fast Eisel-Lemire algorithm again. Calculating the (man, exp10)
// pair from the high_prec_dec h is more correct but slower than the
// approach taken in wuffs_base__parse_number_f64. The latter is optimized
// for the common cases (e.g. assuming no underscores or a leading '+'
// sign) rather than the full set of cases allowed by the Wuffs API.
if (h->num_digits <= 19) {
uint64_t man = 0;
uint32_t i;
for (i = 0; i < h->num_digits; i++) {
man = (10 * man) + h->digits[i];
}
int32_t exp10 = h->decimal_point - ((int32_t)(h->num_digits));
if ((man != 0) && (-307 <= exp10) && (exp10 <= 288)) {
int64_t r =
wuffs_base__private_implementation__parse_number_f64_eisel_lemire(
man, exp10);
if (r >= 0) {
wuffs_base__result_f64 ret;
ret.status.repr = NULL;
ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
((uint64_t)r) | (((uint64_t)(h->negative)) << 63));
return ret;
}
}
}
// When Eisel-Lemire fails, fall back to Simple Decimal Conversion. See
// https://nigeltao.github.io/blog/2020/parse-number-f64-simple.html
//
// Scale by powers of 2 until we're in the range [ยฝ .. 1], which gives us
// our exponent (in base-2). First we shift right, possibly a little too
// far, ending with a value certainly below 1 and possibly below ยฝ...
const int32_t f64_bias = -1023;
int32_t exp2 = 0;
while (h->decimal_point > 0) {
uint32_t n = (uint32_t)(+h->decimal_point);
uint32_t shift =
(n < num_powers)
? powers[n]
: WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL;
wuffs_base__private_implementation__high_prec_dec__small_rshift(h, shift);
if (h->decimal_point <
-WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) {
goto zero;
}
exp2 += (int32_t)shift;
}
// ...then we shift left, putting us in [ยฝ .. 1].
while (h->decimal_point <= 0) {
uint32_t shift;
if (h->decimal_point == 0) {
if (h->digits[0] >= 5) {
break;
}
shift = (h->digits[0] < 2) ? 2 : 1;
} else {
uint32_t n = (uint32_t)(-h->decimal_point);
shift = (n < num_powers)
? powers[n]
: WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL;
}
wuffs_base__private_implementation__high_prec_dec__small_lshift(h, shift);
if (h->decimal_point >
+WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) {
goto infinity;
}
exp2 -= (int32_t)shift;
}
// We're in the range [ยฝ .. 1] but f64 uses [1 .. 2].
exp2--;
// The minimum normal exponent is (f64_bias + 1).
while ((f64_bias + 1) > exp2) {
uint32_t n = (uint32_t)((f64_bias + 1) - exp2);
if (n > WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL) {
n = WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL;
}
wuffs_base__private_implementation__high_prec_dec__small_rshift(h, n);
exp2 += (int32_t)n;
}
// Check for overflow.
if ((exp2 - f64_bias) >= 0x07FF) { // (1 << 11) - 1.
goto infinity;
}
// Extract 53 bits for the mantissa (in base-2).
wuffs_base__private_implementation__high_prec_dec__small_lshift(h, 53);
uint64_t man2 =
wuffs_base__private_implementation__high_prec_dec__rounded_integer(h);
// Rounding might have added one bit. If so, shift and re-check overflow.
if ((man2 >> 53) != 0) {
man2 >>= 1;
exp2++;
if ((exp2 - f64_bias) >= 0x07FF) { // (1 << 11) - 1.
goto infinity;
}
}
// Handle subnormal numbers.
if ((man2 >> 52) == 0) {
exp2 = f64_bias;
}
// Pack the bits and return.
uint64_t exp2_bits =
(uint64_t)((exp2 - f64_bias) & 0x07FF); // (1 << 11) - 1.
uint64_t bits = (man2 & 0x000FFFFFFFFFFFFF) | // (1 << 52) - 1.
(exp2_bits << 52) | //
(h->negative ? 0x8000000000000000 : 0); // (1 << 63).
wuffs_base__result_f64 ret;
ret.status.repr = NULL;
ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits);
return ret;
} while (0);
zero:
do {
uint64_t bits = h->negative ? 0x8000000000000000 : 0;
wuffs_base__result_f64 ret;
ret.status.repr = NULL;
ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits);
return ret;
} while (0);
infinity:
do {
if (options & WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN) {
wuffs_base__result_f64 ret;
ret.status.repr = wuffs_base__error__bad_argument;
ret.value = 0;
return ret;
}
uint64_t bits = h->negative ? 0xFFF0000000000000 : 0x7FF0000000000000;
wuffs_base__result_f64 ret;
ret.status.repr = NULL;
ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits);
return ret;
} while (0);
}
static inline bool //
wuffs_base__private_implementation__is_decimal_digit(uint8_t c) {
return ('0' <= c) && (c <= '9');
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64 //
wuffs_base__parse_number_f64(wuffs_base__slice_u8 s, uint32_t options) {
// In practice, almost all "dd.ddddEยฑxxx" numbers can be represented
// losslessly by a uint64_t mantissa "dddddd" and an int32_t base-10
// exponent, adjusting "xxx" for the position (if present) of the decimal
// separator '.' or ','.
//
// This (u64 man, i32 exp10) data structure is superficially similar to the
// "Do It Yourself Floating Point" type from Loitsch (โ€ ), but the exponent
// here is base-10, not base-2.
//
// If s's number fits in a (man, exp10), parse that pair with the
// Eisel-Lemire algorithm. If not, or if Eisel-Lemire fails, parsing s with
// the fallback algorithm is slower but comprehensive.
//
// โ€  "Printing Floating-Point Numbers Quickly and Accurately with Integers"
// (https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf).
// Florian Loitsch is also the primary contributor to
// https://github.com/google/double-conversion
do {
// Calculating that (man, exp10) pair needs to stay within s's bounds.
// Provided that s isn't extremely long, work on a NUL-terminated copy of
// s's contents. The NUL byte isn't a valid part of "ยฑdd.ddddEยฑxxx".
//
// As the pointer p walks the contents, it's faster to repeatedly check "is
// *p a valid digit" than "is p within bounds and *p a valid digit".
if (s.len >= 256) {
goto fallback;
}
uint8_t z[256];
memcpy(&z[0], s.ptr, s.len);
z[s.len] = 0;
const uint8_t* p = &z[0];
// Look for a leading minus sign. Technically, we could also look for an
// optional plus sign, but the "script/process-json-numbers.c with -p"
// benchmark is noticably slower if we do. It's optional and, in practice,
// usually absent. Let the fallback catch it.
bool negative = (*p == '-');
if (negative) {
p++;
}
// After walking "dd.dddd", comparing p later with p now will produce the
// number of "d"s and "."s.
const uint8_t* const start_of_digits_ptr = p;
// Walk the "d"s before a '.', 'E', NUL byte, etc. If it starts with '0',
// it must be a single '0'. If it starts with a non-zero decimal digit, it
// can be a sequence of decimal digits.
//
// Update the man variable during the walk. It's OK if man overflows now.
// We'll detect that later.
uint64_t man;
if (*p == '0') {
man = 0;
p++;
if (wuffs_base__private_implementation__is_decimal_digit(*p)) {
goto fallback;
}
} else if (wuffs_base__private_implementation__is_decimal_digit(*p)) {
man = ((uint8_t)(*p - '0'));
p++;
for (; wuffs_base__private_implementation__is_decimal_digit(*p); p++) {
man = (10 * man) + ((uint8_t)(*p - '0'));
}
} else {
goto fallback;
}
// Walk the "d"s after the optional decimal separator ('.' or ','),
// updating the man and exp10 variables.
int32_t exp10 = 0;
if (*p ==
((options & WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
? ','
: '.')) {
p++;
const uint8_t* first_after_separator_ptr = p;
if (!wuffs_base__private_implementation__is_decimal_digit(*p)) {
goto fallback;
}
man = (10 * man) + ((uint8_t)(*p - '0'));
p++;
for (; wuffs_base__private_implementation__is_decimal_digit(*p); p++) {
man = (10 * man) + ((uint8_t)(*p - '0'));
}
exp10 = ((int32_t)(first_after_separator_ptr - p));
}
// Count the number of digits:
// - for an input of "314159", digit_count is 6.
// - for an input of "3.14159", digit_count is 7.
//
// This is off-by-one if there is a decimal separator. That's OK for now.
// We'll correct for that later. The "script/process-json-numbers.c with
// -p" benchmark is noticably slower if we try to correct for that now.
uint32_t digit_count = (uint32_t)(p - start_of_digits_ptr);
// Update exp10 for the optional exponent, starting with 'E' or 'e'.
if ((*p | 0x20) == 'e') {
p++;
int32_t exp_sign = +1;
if (*p == '-') {
p++;
exp_sign = -1;
} else if (*p == '+') {
p++;
}
if (!wuffs_base__private_implementation__is_decimal_digit(*p)) {
goto fallback;
}
int32_t exp_num = ((uint8_t)(*p - '0'));
p++;
// The rest of the exp_num walking has a peculiar control flow but, once
// again, the "script/process-json-numbers.c with -p" benchmark is
// sensitive to alternative formulations.
if (wuffs_base__private_implementation__is_decimal_digit(*p)) {
exp_num = (10 * exp_num) + ((uint8_t)(*p - '0'));
p++;
}
if (wuffs_base__private_implementation__is_decimal_digit(*p)) {
exp_num = (10 * exp_num) + ((uint8_t)(*p - '0'));
p++;
}
while (wuffs_base__private_implementation__is_decimal_digit(*p)) {
if (exp_num > 0x1000000) {
goto fallback;
}
exp_num = (10 * exp_num) + ((uint8_t)(*p - '0'));
p++;
}
exp10 += exp_sign * exp_num;
}
// The Wuffs API is that the original slice has no trailing data. It also
// allows underscores, which we don't catch here but the fallback should.
if (p != &z[s.len]) {
goto fallback;
}
// Check that the uint64_t typed man variable has not overflowed, based on
// digit_count.
//
// For reference:
// - (1 << 63) is 9223372036854775808, which has 19 decimal digits.
// - (1 << 64) is 18446744073709551616, which has 20 decimal digits.
// - 19 nines, 9999999999999999999, is 0x8AC7230489E7FFFF, which has 64
// bits and 16 hexadecimal digits.
// - 20 nines, 99999999999999999999, is 0x56BC75E2D630FFFFF, which has 67
// bits and 17 hexadecimal digits.
if (digit_count > 19) {
// Even if we have more than 19 pseudo-digits, it's not yet definitely an
// overflow. Recall that digit_count might be off-by-one (too large) if
// there's a decimal separator. It will also over-report the number of
// meaningful digits if the input looks something like "0.000dddExxx".
//
// We adjust by the number of leading '0's and '.'s and re-compare to 19.
// Once again, technically, we could skip ','s too, but that perturbs the
// "script/process-json-numbers.c with -p" benchmark.
const uint8_t* q = start_of_digits_ptr;
for (; (*q == '0') || (*q == '.'); q++) {
}
digit_count -= (uint32_t)(q - start_of_digits_ptr);
if (digit_count > 19) {
goto fallback;
}
}
// The wuffs_base__private_implementation__parse_number_f64_eisel_lemire
// preconditions include that exp10 is in the range [-307 ..= 288].
if ((exp10 < -307) || (288 < exp10)) {
goto fallback;
}
// If both man and (10 ** exp10) are exactly representable by a double, we
// don't need to run the Eisel-Lemire algorithm.
if ((-22 <= exp10) && (exp10 <= 22) && ((man >> 53) == 0)) {
double d = (double)man;
if (exp10 >= 0) {
d *= wuffs_base__private_implementation__f64_powers_of_10[+exp10];
} else {
d /= wuffs_base__private_implementation__f64_powers_of_10[-exp10];
}
wuffs_base__result_f64 ret;
ret.status.repr = NULL;
ret.value = negative ? -d : +d;
return ret;
}
// The wuffs_base__private_implementation__parse_number_f64_eisel_lemire
// preconditions include that man is non-zero. Parsing "0" should be caught
// by the "If both man and (10 ** exp10)" above, but "0e99" might not.
if (man == 0) {
goto fallback;
}
// Our man and exp10 are in range. Run the Eisel-Lemire algorithm.
int64_t r =
wuffs_base__private_implementation__parse_number_f64_eisel_lemire(
man, exp10);
if (r < 0) {
goto fallback;
}
wuffs_base__result_f64 ret;
ret.status.repr = NULL;
ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
((uint64_t)r) | (((uint64_t)negative) << 63));
return ret;
} while (0);
fallback:
do {
wuffs_base__private_implementation__high_prec_dec h;
wuffs_base__status status =
wuffs_base__private_implementation__high_prec_dec__parse(&h, s,
options);
if (status.repr) {
return wuffs_base__private_implementation__parse_number_f64_special(
s, options);
}
return wuffs_base__private_implementation__high_prec_dec__to_f64(&h,
options);
} while (0);
}
// --------
static inline size_t //
wuffs_base__private_implementation__render_inf(wuffs_base__slice_u8 dst,
bool neg,
uint32_t options) {
if (neg) {
if (dst.len < 4) {
return 0;
}
wuffs_base__poke_u32le__no_bounds_check(dst.ptr, 0x666E492D); // '-Inf'le.
return 4;
}
if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
if (dst.len < 4) {
return 0;
}
wuffs_base__poke_u32le__no_bounds_check(dst.ptr, 0x666E492B); // '+Inf'le.
return 4;
}
if (dst.len < 3) {
return 0;
}
wuffs_base__poke_u24le__no_bounds_check(dst.ptr, 0x666E49); // 'Inf'le.
return 3;
}
static inline size_t //
wuffs_base__private_implementation__render_nan(wuffs_base__slice_u8 dst) {
if (dst.len < 3) {
return 0;
}
wuffs_base__poke_u24le__no_bounds_check(dst.ptr, 0x4E614E); // 'NaN'le.
return 3;
}
static size_t //
wuffs_base__private_implementation__high_prec_dec__render_exponent_absent(
wuffs_base__slice_u8 dst,
wuffs_base__private_implementation__high_prec_dec* h,
uint32_t precision,
uint32_t options) {
size_t n = (h->negative ||
(options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN))
? 1
: 0;
if (h->decimal_point <= 0) {
n += 1;
} else {
n += (size_t)(h->decimal_point);
}
if (precision > 0) {
n += precision + 1; // +1 for the '.'.
}
// Don't modify dst if the formatted number won't fit.
if (n > dst.len) {
return 0;
}
// Align-left or align-right.
uint8_t* ptr = (options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT)
? &dst.ptr[dst.len - n]
: &dst.ptr[0];
// Leading "ยฑ".
if (h->negative) {
*ptr++ = '-';
} else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
*ptr++ = '+';
}
// Integral digits.
if (h->decimal_point <= 0) {
*ptr++ = '0';
} else {
uint32_t m =
wuffs_base__u32__min(h->num_digits, (uint32_t)(h->decimal_point));
uint32_t i = 0;
for (; i < m; i++) {
*ptr++ = (uint8_t)('0' | h->digits[i]);
}
for (; i < (uint32_t)(h->decimal_point); i++) {
*ptr++ = '0';
}
}
// Separator and then fractional digits.
if (precision > 0) {
*ptr++ =
(options & WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
? ','
: '.';
uint32_t i = 0;
for (; i < precision; i++) {
uint32_t j = ((uint32_t)(h->decimal_point)) + i;
*ptr++ = (uint8_t)('0' | ((j < h->num_digits) ? h->digits[j] : 0));
}
}
return n;
}
static size_t //
wuffs_base__private_implementation__high_prec_dec__render_exponent_present(
wuffs_base__slice_u8 dst,
wuffs_base__private_implementation__high_prec_dec* h,
uint32_t precision,
uint32_t options) {
int32_t exp = 0;
if (h->num_digits > 0) {
exp = h->decimal_point - 1;
}
bool negative_exp = exp < 0;
if (negative_exp) {
exp = -exp;
}
size_t n = (h->negative ||
(options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN))
? 4
: 3; // Mininum 3 bytes: first digit and then "eยฑ".
if (precision > 0) {
n += precision + 1; // +1 for the '.'.
}
n += (exp < 100) ? 2 : 3;
// Don't modify dst if the formatted number won't fit.
if (n > dst.len) {
return 0;
}
// Align-left or align-right.
uint8_t* ptr = (options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT)
? &dst.ptr[dst.len - n]
: &dst.ptr[0];
// Leading "ยฑ".
if (h->negative) {
*ptr++ = '-';
} else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
*ptr++ = '+';
}
// Integral digit.
if (h->num_digits > 0) {
*ptr++ = (uint8_t)('0' | h->digits[0]);
} else {
*ptr++ = '0';
}
// Separator and then fractional digits.
if (precision > 0) {
*ptr++ =
(options & WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA)
? ','
: '.';
uint32_t i = 1;
uint32_t j = wuffs_base__u32__min(h->num_digits, precision + 1);
for (; i < j; i++) {
*ptr++ = (uint8_t)('0' | h->digits[i]);
}
for (; i <= precision; i++) {
*ptr++ = '0';
}
}
// Exponent: "eยฑ" and then 2 or 3 digits.
*ptr++ = 'e';
*ptr++ = negative_exp ? '-' : '+';
if (exp < 10) {
*ptr++ = '0';
*ptr++ = (uint8_t)('0' | exp);
} else if (exp < 100) {
*ptr++ = (uint8_t)('0' | (exp / 10));
*ptr++ = (uint8_t)('0' | (exp % 10));
} else {
int32_t e = exp / 100;
exp -= e * 100;
*ptr++ = (uint8_t)('0' | e);
*ptr++ = (uint8_t)('0' | (exp / 10));
*ptr++ = (uint8_t)('0' | (exp % 10));
}
return n;
}
WUFFS_BASE__MAYBE_STATIC size_t //
wuffs_base__render_number_f64(wuffs_base__slice_u8 dst,
double x,
uint32_t precision,
uint32_t options) {
// Decompose x (64 bits) into negativity (1 bit), base-2 exponent (11 bits
// with a -1023 bias) and mantissa (52 bits).
uint64_t bits = wuffs_base__ieee_754_bit_representation__from_f64_to_u64(x);
bool neg = (bits >> 63) != 0;
int32_t exp2 = ((int32_t)(bits >> 52)) & 0x7FF;
uint64_t man = bits & 0x000FFFFFFFFFFFFFul;
// Apply the exponent bias and set the implicit top bit of the mantissa,
// unless x is subnormal. Also take care of Inf and NaN.
if (exp2 == 0x7FF) {
if (man != 0) {
return wuffs_base__private_implementation__render_nan(dst);
}
return wuffs_base__private_implementation__render_inf(dst, neg, options);
} else if (exp2 == 0) {
exp2 = -1022;
} else {
exp2 -= 1023;
man |= 0x0010000000000000ul;
}
// Ensure that precision isn't too large.
if (precision > 4095) {
precision = 4095;
}
// Convert from the (neg, exp2, man) tuple to an HPD.
wuffs_base__private_implementation__high_prec_dec h;
wuffs_base__private_implementation__high_prec_dec__assign(&h, man, neg);
if (h.num_digits > 0) {
wuffs_base__private_implementation__high_prec_dec__lshift(
&h, exp2 - 52); // 52 mantissa bits.
}
// Handle the "%e" and "%f" formats.
switch (options & (WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT |
WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT)) {
case WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT: // The "%"f" format.
if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) {
wuffs_base__private_implementation__high_prec_dec__round_just_enough(
&h, exp2, man);
int32_t p = ((int32_t)(h.num_digits)) - h.decimal_point;
precision = ((uint32_t)(wuffs_base__i32__max(0, p)));
} else {
wuffs_base__private_implementation__high_prec_dec__round_nearest(
&h, ((int32_t)precision) + h.decimal_point);
}
return wuffs_base__private_implementation__high_prec_dec__render_exponent_absent(
dst, &h, precision, options);
case WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT: // The "%e" format.
if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) {
wuffs_base__private_implementation__high_prec_dec__round_just_enough(
&h, exp2, man);
precision = (h.num_digits > 0) ? (h.num_digits - 1) : 0;
} else {
wuffs_base__private_implementation__high_prec_dec__round_nearest(
&h, ((int32_t)precision) + 1);
}
return wuffs_base__private_implementation__high_prec_dec__render_exponent_present(
dst, &h, precision, options);
}
// We have the "%g" format and so precision means the number of significant
// digits, not the number of digits after the decimal separator. Perform
// rounding and determine whether to use "%e" or "%f".
int32_t e_threshold = 0;
if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) {
wuffs_base__private_implementation__high_prec_dec__round_just_enough(
&h, exp2, man);
precision = h.num_digits;
e_threshold = 6;
} else {
if (precision == 0) {
precision = 1;
}
wuffs_base__private_implementation__high_prec_dec__round_nearest(
&h, ((int32_t)precision));
e_threshold = ((int32_t)precision);
int32_t nd = ((int32_t)(h.num_digits));
if ((e_threshold > nd) && (nd >= h.decimal_point)) {
e_threshold = nd;
}
}
// Use the "%e" format if the exponent is large.
int32_t e = h.decimal_point - 1;
if ((e < -4) || (e_threshold <= e)) {
uint32_t p = wuffs_base__u32__min(precision, h.num_digits);
return wuffs_base__private_implementation__high_prec_dec__render_exponent_present(
dst, &h, (p > 0) ? (p - 1) : 0, options);
}
// Use the "%f" format otherwise.
int32_t p = ((int32_t)precision);
if (p > h.decimal_point) {
p = ((int32_t)(h.num_digits));
}
precision = ((uint32_t)(wuffs_base__i32__max(0, p - h.decimal_point)));
return wuffs_base__private_implementation__high_prec_dec__render_exponent_absent(
dst, &h, precision, options);
}
#endif // !defined(WUFFS_CONFIG__MODULES) ||
// defined(WUFFS_CONFIG__MODULE__BASE) ||
// defined(WUFFS_CONFIG__MODULE__BASE__FLOATCONV)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
defined(WUFFS_CONFIG__MODULE__BASE__INTCONV)
// ---------------- Integer
// wuffs_base__parse_number__foo_digits entries are 0x00 for invalid digits,
// and (0x80 | v) for valid digits, where v is the 4 bit value.
static const uint8_t wuffs_base__parse_number__decimal_digits[256] = {
// 0 1 2 3 4 5 6 7
// 8 9 A B C D E F
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x00 ..= 0x07.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x08 ..= 0x0F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x10 ..= 0x17.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x18 ..= 0x1F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x20 ..= 0x27.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x28 ..= 0x2F.
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, // 0x30 ..= 0x37. '0'-'7'.
0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x38 ..= 0x3F. '8'-'9'.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x40 ..= 0x47.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x48 ..= 0x4F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x50 ..= 0x57.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x58 ..= 0x5F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x60 ..= 0x67.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x68 ..= 0x6F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x70 ..= 0x77.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x78 ..= 0x7F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x80 ..= 0x87.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x88 ..= 0x8F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x90 ..= 0x97.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x98 ..= 0x9F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA0 ..= 0xA7.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA8 ..= 0xAF.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB0 ..= 0xB7.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB8 ..= 0xBF.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC0 ..= 0xC7.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC8 ..= 0xCF.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD0 ..= 0xD7.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD8 ..= 0xDF.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE0 ..= 0xE7.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE8 ..= 0xEF.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF0 ..= 0xF7.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF8 ..= 0xFF.
// 0 1 2 3 4 5 6 7
// 8 9 A B C D E F
};
static const uint8_t wuffs_base__parse_number__hexadecimal_digits[256] = {
// 0 1 2 3 4 5 6 7
// 8 9 A B C D E F
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x00 ..= 0x07.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x08 ..= 0x0F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x10 ..= 0x17.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x18 ..= 0x1F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x20 ..= 0x27.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x28 ..= 0x2F.
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, // 0x30 ..= 0x37. '0'-'7'.
0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x38 ..= 0x3F. '8'-'9'.
0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00, // 0x40 ..= 0x47. 'A'-'F'.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x48 ..= 0x4F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x50 ..= 0x57.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x58 ..= 0x5F.
0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00, // 0x60 ..= 0x67. 'a'-'f'.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x68 ..= 0x6F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x70 ..= 0x77.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x78 ..= 0x7F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x80 ..= 0x87.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x88 ..= 0x8F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x90 ..= 0x97.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x98 ..= 0x9F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA0 ..= 0xA7.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA8 ..= 0xAF.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB0 ..= 0xB7.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB8 ..= 0xBF.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC0 ..= 0xC7.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC8 ..= 0xCF.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD0 ..= 0xD7.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD8 ..= 0xDF.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE0 ..= 0xE7.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE8 ..= 0xEF.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF0 ..= 0xF7.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF8 ..= 0xFF.
// 0 1 2 3 4 5 6 7
// 8 9 A B C D E F
};
static const uint8_t wuffs_base__private_implementation__encode_base16[16] = {
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, // 0x00 ..= 0x07.
0x38, 0x39, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, // 0x08 ..= 0x0F.
};
// --------
WUFFS_BASE__MAYBE_STATIC wuffs_base__result_i64 //
wuffs_base__parse_number_i64(wuffs_base__slice_u8 s, uint32_t options) {
uint8_t* p = s.ptr;
uint8_t* q = s.ptr + s.len;
if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
for (; (p < q) && (*p == '_'); p++) {
}
}
bool negative = false;
if (p >= q) {
goto fail_bad_argument;
} else if (*p == '-') {
p++;
negative = true;
} else if (*p == '+') {
p++;
}
do {
wuffs_base__result_u64 r = wuffs_base__parse_number_u64(
wuffs_base__make_slice_u8(p, (size_t)(q - p)), options);
if (r.status.repr != NULL) {
wuffs_base__result_i64 ret;
ret.status.repr = r.status.repr;
ret.value = 0;
return ret;
} else if (negative) {
if (r.value < 0x8000000000000000) {
wuffs_base__result_i64 ret;
ret.status.repr = NULL;
ret.value = -(int64_t)(r.value);
return ret;
} else if (r.value == 0x8000000000000000) {
wuffs_base__result_i64 ret;
ret.status.repr = NULL;
ret.value = INT64_MIN;
return ret;
}
goto fail_out_of_bounds;
} else if (r.value > 0x7FFFFFFFFFFFFFFF) {
goto fail_out_of_bounds;
} else {
wuffs_base__result_i64 ret;
ret.status.repr = NULL;
ret.value = +(int64_t)(r.value);
return ret;
}
} while (0);
fail_bad_argument:
do {
wuffs_base__result_i64 ret;
ret.status.repr = wuffs_base__error__bad_argument;
ret.value = 0;
return ret;
} while (0);
fail_out_of_bounds:
do {
wuffs_base__result_i64 ret;
ret.status.repr = wuffs_base__error__out_of_bounds;
ret.value = 0;
return ret;
} while (0);
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__result_u64 //
wuffs_base__parse_number_u64(wuffs_base__slice_u8 s, uint32_t options) {
uint8_t* p = s.ptr;
uint8_t* q = s.ptr + s.len;
if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
for (; (p < q) && (*p == '_'); p++) {
}
}
if (p >= q) {
goto fail_bad_argument;
} else if (*p == '0') {
p++;
if (p >= q) {
goto ok_zero;
}
if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
if (*p == '_') {
p++;
for (; p < q; p++) {
if (*p != '_') {
if (options &
WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) {
goto decimal;
}
goto fail_bad_argument;
}
}
goto ok_zero;
}
}
if ((*p == 'x') || (*p == 'X')) {
p++;
if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
for (; (p < q) && (*p == '_'); p++) {
}
}
if (p < q) {
goto hexadecimal;
}
} else if ((*p == 'd') || (*p == 'D')) {
p++;
if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) {
for (; (p < q) && (*p == '_'); p++) {
}
}
if (p < q) {
goto decimal;
}
}
if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) {
goto decimal;
}
goto fail_bad_argument;
}
decimal:
do {
uint64_t v = wuffs_base__parse_number__decimal_digits[*p++];
if (v == 0) {
goto fail_bad_argument;
}
v &= 0x0F;
// UINT64_MAX is 18446744073709551615, which is ((10 * max10) + max1).
const uint64_t max10 = 1844674407370955161u;
const uint8_t max1 = 5;
for (; p < q; p++) {
if ((*p == '_') &&
(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
continue;
}
uint8_t digit = wuffs_base__parse_number__decimal_digits[*p];
if (digit == 0) {
goto fail_bad_argument;
}
digit &= 0x0F;
if ((v > max10) || ((v == max10) && (digit > max1))) {
goto fail_out_of_bounds;
}
v = (10 * v) + ((uint64_t)(digit));
}
wuffs_base__result_u64 ret;
ret.status.repr = NULL;
ret.value = v;
return ret;
} while (0);
hexadecimal:
do {
uint64_t v = wuffs_base__parse_number__hexadecimal_digits[*p++];
if (v == 0) {
goto fail_bad_argument;
}
v &= 0x0F;
for (; p < q; p++) {
if ((*p == '_') &&
(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) {
continue;
}
uint8_t digit = wuffs_base__parse_number__hexadecimal_digits[*p];
if (digit == 0) {
goto fail_bad_argument;
}
digit &= 0x0F;
if ((v >> 60) != 0) {
goto fail_out_of_bounds;
}
v = (v << 4) | ((uint64_t)(digit));
}
wuffs_base__result_u64 ret;
ret.status.repr = NULL;
ret.value = v;
return ret;
} while (0);
ok_zero:
do {
wuffs_base__result_u64 ret;
ret.status.repr = NULL;
ret.value = 0;
return ret;
} while (0);
fail_bad_argument:
do {
wuffs_base__result_u64 ret;
ret.status.repr = wuffs_base__error__bad_argument;
ret.value = 0;
return ret;
} while (0);
fail_out_of_bounds:
do {
wuffs_base__result_u64 ret;
ret.status.repr = wuffs_base__error__out_of_bounds;
ret.value = 0;
return ret;
} while (0);
}
// --------
// wuffs_base__render_number__first_hundred contains the decimal encodings of
// the first one hundred numbers [0 ..= 99].
static const uint8_t wuffs_base__render_number__first_hundred[200] = {
'0', '0', '0', '1', '0', '2', '0', '3', '0', '4', //
'0', '5', '0', '6', '0', '7', '0', '8', '0', '9', //
'1', '0', '1', '1', '1', '2', '1', '3', '1', '4', //
'1', '5', '1', '6', '1', '7', '1', '8', '1', '9', //
'2', '0', '2', '1', '2', '2', '2', '3', '2', '4', //
'2', '5', '2', '6', '2', '7', '2', '8', '2', '9', //
'3', '0', '3', '1', '3', '2', '3', '3', '3', '4', //
'3', '5', '3', '6', '3', '7', '3', '8', '3', '9', //
'4', '0', '4', '1', '4', '2', '4', '3', '4', '4', //
'4', '5', '4', '6', '4', '7', '4', '8', '4', '9', //
'5', '0', '5', '1', '5', '2', '5', '3', '5', '4', //
'5', '5', '5', '6', '5', '7', '5', '8', '5', '9', //
'6', '0', '6', '1', '6', '2', '6', '3', '6', '4', //
'6', '5', '6', '6', '6', '7', '6', '8', '6', '9', //
'7', '0', '7', '1', '7', '2', '7', '3', '7', '4', //
'7', '5', '7', '6', '7', '7', '7', '8', '7', '9', //
'8', '0', '8', '1', '8', '2', '8', '3', '8', '4', //
'8', '5', '8', '6', '8', '7', '8', '8', '8', '9', //
'9', '0', '9', '1', '9', '2', '9', '3', '9', '4', //
'9', '5', '9', '6', '9', '7', '9', '8', '9', '9', //
};
static size_t //
wuffs_base__private_implementation__render_number_u64(wuffs_base__slice_u8 dst,
uint64_t x,
uint32_t options,
bool neg) {
uint8_t buf[WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL];
uint8_t* ptr = &buf[0] + sizeof(buf);
while (x >= 100) {
size_t index = ((size_t)((x % 100) * 2));
x /= 100;
uint8_t s0 = wuffs_base__render_number__first_hundred[index + 0];
uint8_t s1 = wuffs_base__render_number__first_hundred[index + 1];
ptr -= 2;
ptr[0] = s0;
ptr[1] = s1;
}
if (x < 10) {
ptr -= 1;
ptr[0] = (uint8_t)('0' + x);
} else {
size_t index = ((size_t)(x * 2));
uint8_t s0 = wuffs_base__render_number__first_hundred[index + 0];
uint8_t s1 = wuffs_base__render_number__first_hundred[index + 1];
ptr -= 2;
ptr[0] = s0;
ptr[1] = s1;
}
if (neg) {
ptr -= 1;
ptr[0] = '-';
} else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) {
ptr -= 1;
ptr[0] = '+';
}
size_t n = sizeof(buf) - ((size_t)(ptr - &buf[0]));
if (n > dst.len) {
return 0;
}
memcpy(dst.ptr + ((options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT)
? (dst.len - n)
: 0),
ptr, n);
return n;
}
WUFFS_BASE__MAYBE_STATIC size_t //
wuffs_base__render_number_i64(wuffs_base__slice_u8 dst,
int64_t x,
uint32_t options) {
uint64_t u = (uint64_t)x;
bool neg = x < 0;
if (neg) {
u = 1 + ~u;
}
return wuffs_base__private_implementation__render_number_u64(dst, u, options,
neg);
}
WUFFS_BASE__MAYBE_STATIC size_t //
wuffs_base__render_number_u64(wuffs_base__slice_u8 dst,
uint64_t x,
uint32_t options) {
return wuffs_base__private_implementation__render_number_u64(dst, x, options,
false);
}
// ---------------- Base-16
WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output //
wuffs_base__base_16__decode2(wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 src,
bool src_closed,
uint32_t options) {
wuffs_base__transform__output o;
size_t src_len2 = src.len / 2;
size_t len;
if (dst.len < src_len2) {
len = dst.len;
o.status.repr = wuffs_base__suspension__short_write;
} else {
len = src_len2;
if (!src_closed) {
o.status.repr = wuffs_base__suspension__short_read;
} else if (src.len & 1) {
o.status.repr = wuffs_base__error__bad_data;
} else {
o.status.repr = NULL;
}
}
uint8_t* d = dst.ptr;
uint8_t* s = src.ptr;
size_t n = len;
while (n--) {
*d = (uint8_t)((wuffs_base__parse_number__hexadecimal_digits[s[0]] << 4) |
(wuffs_base__parse_number__hexadecimal_digits[s[1]] & 0x0F));
d += 1;
s += 2;
}
o.num_dst = len;
o.num_src = len * 2;
return o;
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output //
wuffs_base__base_16__decode4(wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 src,
bool src_closed,
uint32_t options) {
wuffs_base__transform__output o;
size_t src_len4 = src.len / 4;
size_t len = dst.len < src_len4 ? dst.len : src_len4;
if (dst.len < src_len4) {
len = dst.len;
o.status.repr = wuffs_base__suspension__short_write;
} else {
len = src_len4;
if (!src_closed) {
o.status.repr = wuffs_base__suspension__short_read;
} else if (src.len & 1) {
o.status.repr = wuffs_base__error__bad_data;
} else {
o.status.repr = NULL;
}
}
uint8_t* d = dst.ptr;
uint8_t* s = src.ptr;
size_t n = len;
while (n--) {
*d = (uint8_t)((wuffs_base__parse_number__hexadecimal_digits[s[2]] << 4) |
(wuffs_base__parse_number__hexadecimal_digits[s[3]] & 0x0F));
d += 1;
s += 4;
}
o.num_dst = len;
o.num_src = len * 4;
return o;
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output //
wuffs_base__base_16__encode2(wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 src,
bool src_closed,
uint32_t options) {
wuffs_base__transform__output o;
size_t dst_len2 = dst.len / 2;
size_t len;
if (dst_len2 < src.len) {
len = dst_len2;
o.status.repr = wuffs_base__suspension__short_write;
} else {
len = src.len;
if (!src_closed) {
o.status.repr = wuffs_base__suspension__short_read;
} else {
o.status.repr = NULL;
}
}
uint8_t* d = dst.ptr;
uint8_t* s = src.ptr;
size_t n = len;
while (n--) {
uint8_t c = *s;
d[0] = wuffs_base__private_implementation__encode_base16[c >> 4];
d[1] = wuffs_base__private_implementation__encode_base16[c & 0x0F];
d += 2;
s += 1;
}
o.num_dst = len * 2;
o.num_src = len;
return o;
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output //
wuffs_base__base_16__encode4(wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 src,
bool src_closed,
uint32_t options) {
wuffs_base__transform__output o;
size_t dst_len4 = dst.len / 4;
size_t len;
if (dst_len4 < src.len) {
len = dst_len4;
o.status.repr = wuffs_base__suspension__short_write;
} else {
len = src.len;
if (!src_closed) {
o.status.repr = wuffs_base__suspension__short_read;
} else {
o.status.repr = NULL;
}
}
uint8_t* d = dst.ptr;
uint8_t* s = src.ptr;
size_t n = len;
while (n--) {
uint8_t c = *s;
d[0] = '\\';
d[1] = 'x';
d[2] = wuffs_base__private_implementation__encode_base16[c >> 4];
d[3] = wuffs_base__private_implementation__encode_base16[c & 0x0F];
d += 4;
s += 1;
}
o.num_dst = len * 4;
o.num_src = len;
return o;
}
// ---------------- Base-64
// The two base-64 alphabets, std and url, differ only in the last two codes.
// - std: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
// - url: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"
static const uint8_t wuffs_base__base_64__decode_std[256] = {
// 0 1 2 3 4 5 6 7
// 8 9 A B C D E F
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x00 ..= 0x07.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x08 ..= 0x0F.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x10 ..= 0x17.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x18 ..= 0x1F.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x20 ..= 0x27.
0x80, 0x80, 0x80, 0x3E, 0x80, 0x80, 0x80, 0x3F, // 0x28 ..= 0x2F.
0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, // 0x30 ..= 0x37.
0x3C, 0x3D, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x38 ..= 0x3F.
0x80, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, // 0x40 ..= 0x47.
0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, // 0x48 ..= 0x4F.
0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, // 0x50 ..= 0x57.
0x17, 0x18, 0x19, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x58 ..= 0x5F.
0x80, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, // 0x60 ..= 0x67.
0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, // 0x68 ..= 0x6F.
0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, // 0x70 ..= 0x77.
0x31, 0x32, 0x33, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x78 ..= 0x7F.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x80 ..= 0x87.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x88 ..= 0x8F.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x90 ..= 0x97.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x98 ..= 0x9F.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xA0 ..= 0xA7.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xA8 ..= 0xAF.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xB0 ..= 0xB7.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xB8 ..= 0xBF.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xC0 ..= 0xC7.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xC8 ..= 0xCF.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xD0 ..= 0xD7.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xD8 ..= 0xDF.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xE0 ..= 0xE7.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xE8 ..= 0xEF.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xF0 ..= 0xF7.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xF8 ..= 0xFF.
// 0 1 2 3 4 5 6 7
// 8 9 A B C D E F
};
static const uint8_t wuffs_base__base_64__decode_url[256] = {
// 0 1 2 3 4 5 6 7
// 8 9 A B C D E F
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x00 ..= 0x07.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x08 ..= 0x0F.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x10 ..= 0x17.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x18 ..= 0x1F.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x20 ..= 0x27.
0x80, 0x80, 0x80, 0x80, 0x80, 0x3E, 0x80, 0x80, // 0x28 ..= 0x2F.
0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, // 0x30 ..= 0x37.
0x3C, 0x3D, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x38 ..= 0x3F.
0x80, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, // 0x40 ..= 0x47.
0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, // 0x48 ..= 0x4F.
0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, // 0x50 ..= 0x57.
0x17, 0x18, 0x19, 0x80, 0x80, 0x80, 0x80, 0x3F, // 0x58 ..= 0x5F.
0x80, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, // 0x60 ..= 0x67.
0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, // 0x68 ..= 0x6F.
0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, // 0x70 ..= 0x77.
0x31, 0x32, 0x33, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x78 ..= 0x7F.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x80 ..= 0x87.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x88 ..= 0x8F.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x90 ..= 0x97.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x98 ..= 0x9F.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xA0 ..= 0xA7.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xA8 ..= 0xAF.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xB0 ..= 0xB7.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xB8 ..= 0xBF.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xC0 ..= 0xC7.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xC8 ..= 0xCF.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xD0 ..= 0xD7.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xD8 ..= 0xDF.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xE0 ..= 0xE7.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xE8 ..= 0xEF.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xF0 ..= 0xF7.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xF8 ..= 0xFF.
// 0 1 2 3 4 5 6 7
// 8 9 A B C D E F
};
static const uint8_t wuffs_base__base_64__encode_std[64] = {
// 0 1 2 3 4 5 6 7
// 8 9 A B C D E F
0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, // 0x00 ..= 0x07.
0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, // 0x08 ..= 0x0F.
0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, // 0x10 ..= 0x17.
0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, // 0x18 ..= 0x1F.
0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, // 0x20 ..= 0x27.
0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, // 0x28 ..= 0x2F.
0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33, // 0x30 ..= 0x37.
0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2B, 0x2F, // 0x38 ..= 0x3F.
};
static const uint8_t wuffs_base__base_64__encode_url[64] = {
// 0 1 2 3 4 5 6 7
// 8 9 A B C D E F
0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, // 0x00 ..= 0x07.
0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, // 0x08 ..= 0x0F.
0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, // 0x10 ..= 0x17.
0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, // 0x18 ..= 0x1F.
0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, // 0x20 ..= 0x27.
0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, // 0x28 ..= 0x2F.
0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33, // 0x30 ..= 0x37.
0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2D, 0x5F, // 0x38 ..= 0x3F.
};
// --------
WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output //
wuffs_base__base_64__decode(wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 src,
bool src_closed,
uint32_t options) {
const uint8_t* alphabet = (options & WUFFS_BASE__BASE_64__URL_ALPHABET)
? wuffs_base__base_64__decode_url
: wuffs_base__base_64__decode_std;
wuffs_base__transform__output o;
uint8_t* d_ptr = dst.ptr;
size_t d_len = dst.len;
const uint8_t* s_ptr = src.ptr;
size_t s_len = src.len;
bool pad = false;
while (s_len >= 4) {
uint32_t s = wuffs_base__peek_u32le__no_bounds_check(s_ptr);
uint32_t s0 = alphabet[0xFF & (s >> 0)];
uint32_t s1 = alphabet[0xFF & (s >> 8)];
uint32_t s2 = alphabet[0xFF & (s >> 16)];
uint32_t s3 = alphabet[0xFF & (s >> 24)];
if (((s0 | s1 | s2 | s3) & 0xC0) != 0) {
if (s_len > 4) {
o.status.repr = wuffs_base__error__bad_data;
goto done;
} else if (!src_closed) {
o.status.repr = wuffs_base__suspension__short_read;
goto done;
} else if ((options & WUFFS_BASE__BASE_64__DECODE_ALLOW_PADDING) &&
(s_ptr[3] == '=')) {
pad = true;
if (s_ptr[2] == '=') {
goto src2;
}
goto src3;
}
o.status.repr = wuffs_base__error__bad_data;
goto done;
}
if (d_len < 3) {
o.status.repr = wuffs_base__suspension__short_write;
goto done;
}
s_ptr += 4;
s_len -= 4;
s = (s0 << 18) | (s1 << 12) | (s2 << 6) | (s3 << 0);
*d_ptr++ = (uint8_t)(s >> 16);
*d_ptr++ = (uint8_t)(s >> 8);
*d_ptr++ = (uint8_t)(s >> 0);
d_len -= 3;
}
if (!src_closed) {
o.status.repr = wuffs_base__suspension__short_read;
goto done;
}
if (s_len == 0) {
o.status.repr = NULL;
goto done;
} else if (s_len == 1) {
o.status.repr = wuffs_base__error__bad_data;
goto done;
} else if (s_len == 2) {
goto src2;
}
src3:
do {
uint32_t s = wuffs_base__peek_u24le__no_bounds_check(s_ptr);
uint32_t s0 = alphabet[0xFF & (s >> 0)];
uint32_t s1 = alphabet[0xFF & (s >> 8)];
uint32_t s2 = alphabet[0xFF & (s >> 16)];
if ((s0 & 0xC0) || (s1 & 0xC0) || (s2 & 0xC3)) {
o.status.repr = wuffs_base__error__bad_data;
goto done;
}
if (d_len < 2) {
o.status.repr = wuffs_base__suspension__short_write;
goto done;
}
s_ptr += pad ? 4 : 3;
s = (s0 << 18) | (s1 << 12) | (s2 << 6);
*d_ptr++ = (uint8_t)(s >> 16);
*d_ptr++ = (uint8_t)(s >> 8);
o.status.repr = NULL;
goto done;
} while (0);
src2:
do {
uint32_t s = wuffs_base__peek_u16le__no_bounds_check(s_ptr);
uint32_t s0 = alphabet[0xFF & (s >> 0)];
uint32_t s1 = alphabet[0xFF & (s >> 8)];
if ((s0 & 0xC0) || (s1 & 0xCF)) {
o.status.repr = wuffs_base__error__bad_data;
goto done;
}
if (d_len < 1) {
o.status.repr = wuffs_base__suspension__short_write;
goto done;
}
s_ptr += pad ? 4 : 2;
s = (s0 << 18) | (s1 << 12);
*d_ptr++ = (uint8_t)(s >> 16);
o.status.repr = NULL;
goto done;
} while (0);
done:
o.num_dst = (size_t)(d_ptr - dst.ptr);
o.num_src = (size_t)(s_ptr - src.ptr);
return o;
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output //
wuffs_base__base_64__encode(wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 src,
bool src_closed,
uint32_t options) {
const uint8_t* alphabet = (options & WUFFS_BASE__BASE_64__URL_ALPHABET)
? wuffs_base__base_64__encode_url
: wuffs_base__base_64__encode_std;
wuffs_base__transform__output o;
uint8_t* d_ptr = dst.ptr;
size_t d_len = dst.len;
const uint8_t* s_ptr = src.ptr;
size_t s_len = src.len;
do {
while (s_len >= 3) {
if (d_len < 4) {
o.status.repr = wuffs_base__suspension__short_write;
goto done;
}
uint32_t s = wuffs_base__peek_u24be__no_bounds_check(s_ptr);
s_ptr += 3;
s_len -= 3;
*d_ptr++ = alphabet[0x3F & (s >> 18)];
*d_ptr++ = alphabet[0x3F & (s >> 12)];
*d_ptr++ = alphabet[0x3F & (s >> 6)];
*d_ptr++ = alphabet[0x3F & (s >> 0)];
d_len -= 4;
}
if (!src_closed) {
o.status.repr = wuffs_base__suspension__short_read;
goto done;
}
if (s_len == 2) {
if (d_len <
((options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) ? 4 : 3)) {
o.status.repr = wuffs_base__suspension__short_write;
goto done;
}
uint32_t s = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(s_ptr)))
<< 8;
s_ptr += 2;
*d_ptr++ = alphabet[0x3F & (s >> 18)];
*d_ptr++ = alphabet[0x3F & (s >> 12)];
*d_ptr++ = alphabet[0x3F & (s >> 6)];
if (options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) {
*d_ptr++ = '=';
}
o.status.repr = NULL;
goto done;
} else if (s_len == 1) {
if (d_len <
((options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) ? 4 : 2)) {
o.status.repr = wuffs_base__suspension__short_write;
goto done;
}
uint32_t s = ((uint32_t)(wuffs_base__peek_u8__no_bounds_check(s_ptr)))
<< 16;
s_ptr += 1;
*d_ptr++ = alphabet[0x3F & (s >> 18)];
*d_ptr++ = alphabet[0x3F & (s >> 12)];
if (options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) {
*d_ptr++ = '=';
*d_ptr++ = '=';
}
o.status.repr = NULL;
goto done;
} else {
o.status.repr = NULL;
goto done;
}
} while (0);
done:
o.num_dst = (size_t)(d_ptr - dst.ptr);
o.num_src = (size_t)(s_ptr - src.ptr);
return o;
}
#endif // !defined(WUFFS_CONFIG__MODULES) ||
// defined(WUFFS_CONFIG__MODULE__BASE) ||
// defined(WUFFS_CONFIG__MODULE__BASE__INTCONV)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
defined(WUFFS_CONFIG__MODULE__BASE__MAGIC)
// ---------------- Magic Numbers
// ICO doesn't start with a magic identifier. Instead, see if the opening bytes
// are plausibly ICO.
//
// Callers should have already verified that (prefix_data.len >= 2) and the
// first two bytes are 0x00.
//
// See:
// - https://docs.fileformat.com/image/ico/
static int32_t //
wuffs_base__magic_number_guess_fourcc__maybe_ico(
wuffs_base__slice_u8 prefix_data,
bool prefix_closed) {
// Allow-list for the Image Type field.
if (prefix_data.len < 4) {
return prefix_closed ? 0 : -1;
} else if (prefix_data.ptr[3] != 0) {
return 0;
}
switch (prefix_data.ptr[2]) {
case 0x01: // ICO
case 0x02: // CUR
break;
default:
return 0;
}
// The Number Of Images should be positive.
if (prefix_data.len < 6) {
return prefix_closed ? 0 : -1;
} else if ((prefix_data.ptr[4] == 0) && (prefix_data.ptr[5] == 0)) {
return 0;
}
// The first ICONDIRENTRY's fourth byte should be zero.
if (prefix_data.len < 10) {
return prefix_closed ? 0 : -1;
} else if (prefix_data.ptr[9] != 0) {
return 0;
}
// TODO: have a separate FourCC for CUR?
return 0x49434F20; // 'ICO 'be
}
// TGA doesn't start with a magic identifier. Instead, see if the opening bytes
// are plausibly TGA.
//
// Callers should have already verified that (prefix_data.len >= 2) and the
// second byte (prefix_data.ptr[1], the Color Map Type byte), is either 0x00 or
// 0x01.
//
// See:
// - https://docs.fileformat.com/image/tga/
// - https://www.dca.fee.unicamp.br/~martino/disciplinas/ea978/tgaffs.pdf
static int32_t //
wuffs_base__magic_number_guess_fourcc__maybe_tga(
wuffs_base__slice_u8 prefix_data,
bool prefix_closed) {
// Allow-list for the Image Type field.
if (prefix_data.len < 3) {
return prefix_closed ? 0 : -1;
}
switch (prefix_data.ptr[2]) {
case 0x01:
case 0x02:
case 0x03:
case 0x09:
case 0x0A:
case 0x0B:
break;
default:
// TODO: 0x20 and 0x21 are invalid, according to the spec, but are
// apparently unofficial extensions.
return 0;
}
// Allow-list for the Color Map Entry Size field (if the Color Map Type field
// is non-zero) or else all the Color Map fields should be zero.
if (prefix_data.len < 8) {
return prefix_closed ? 0 : -1;
} else if (prefix_data.ptr[1] != 0x00) {
switch (prefix_data.ptr[7]) {
case 0x0F:
case 0x10:
case 0x18:
case 0x20:
break;
default:
return 0;
}
} else if ((prefix_data.ptr[3] | prefix_data.ptr[4] | prefix_data.ptr[5] |
prefix_data.ptr[6] | prefix_data.ptr[7]) != 0x00) {
return 0;
}
// Allow-list for the Pixel Depth field.
if (prefix_data.len < 17) {
return prefix_closed ? 0 : -1;
}
switch (prefix_data.ptr[16]) {
case 0x01:
case 0x08:
case 0x0F:
case 0x10:
case 0x18:
case 0x20:
break;
default:
return 0;
}
return 0x54474120; // 'TGA 'be
}
WUFFS_BASE__MAYBE_STATIC int32_t //
wuffs_base__magic_number_guess_fourcc(wuffs_base__slice_u8 prefix_data,
bool prefix_closed) {
// This is similar to (but different from):
// - the magic/Magdir tables under https://github.com/file/file
// - the MIME Sniffing algorithm at https://mimesniff.spec.whatwg.org/
// table holds the 'magic numbers' (which are actually variable length
// strings). The strings may contain NUL bytes, so the "const char* magic"
// value starts with the length-minus-1 of the 'magic number'.
//
// Keep it sorted by magic[1], then magic[0] descending (prioritizing longer
// matches) and finally by magic[2:]. When multiple entries match, the
// longest one wins.
//
// The fourcc field might be negated, in which case there's further
// specialization (see ยง below).
static struct {
int32_t fourcc;
const char* magic;
} table[] = {
{-0x30302020, "\x01\x00\x00"}, // '00 'be
{+0x475A2020, "\x02\x1F\x8B\x08"}, // GZ
{+0x5A535444, "\x03\x28\xB5\x2F\xFD"}, // ZSTD
{+0x425A3220, "\x02\x42\x5A\x68"}, // BZ2
{+0x424D5020, "\x01\x42\x4D"}, // BMP
{+0x47494620, "\x03\x47\x49\x46\x38"}, // GIF
{+0x54494646, "\x03\x49\x49\x2A\x00"}, // TIFF (little-endian)
{+0x54494646, "\x03\x4D\x4D\x00\x2A"}, // TIFF (big-endian)
{-0x52494646, "\x03\x52\x49\x46\x46"}, // RIFF
{+0x4E494520, "\x02\x6E\xC3\xAF"}, // NIE
{+0x514F4920, "\x03\x71\x6F\x69\x66"}, // QOI
{+0x5A4C4942, "\x01\x78\x9C"}, // ZLIB
{+0x504E4720, "\x03\x89\x50\x4E\x47"}, // PNG
{+0x4A504547, "\x01\xFF\xD8"}, // JPEG
};
static const size_t table_len = sizeof(table) / sizeof(table[0]);
if (prefix_data.len == 0) {
return prefix_closed ? 0 : -1;
}
uint8_t pre_first_byte = prefix_data.ptr[0];
int32_t fourcc = 0;
size_t i;
for (i = 0; i < table_len; i++) {
uint8_t mag_first_byte = ((uint8_t)(table[i].magic[1]));
if (pre_first_byte < mag_first_byte) {
break;
} else if (pre_first_byte > mag_first_byte) {
continue;
}
fourcc = table[i].fourcc;
uint8_t mag_remaining_len = ((uint8_t)(table[i].magic[0]));
if (mag_remaining_len == 0) {
goto match;
}
const char* mag_remaining_ptr = table[i].magic + 2;
uint8_t* pre_remaining_ptr = prefix_data.ptr + 1;
size_t pre_remaining_len = prefix_data.len - 1;
if (pre_remaining_len < mag_remaining_len) {
if (!memcmp(pre_remaining_ptr, mag_remaining_ptr, pre_remaining_len)) {
return prefix_closed ? 0 : -1;
}
} else {
if (!memcmp(pre_remaining_ptr, mag_remaining_ptr, mag_remaining_len)) {
goto match;
}
}
}
if (prefix_data.len < 2) {
return prefix_closed ? 0 : -1;
} else if ((prefix_data.ptr[1] == 0x00) || (prefix_data.ptr[1] == 0x01)) {
return wuffs_base__magic_number_guess_fourcc__maybe_tga(prefix_data,
prefix_closed);
}
return 0;
match:
// Negative FourCC values (see ยง above) are further specialized.
if (fourcc < 0) {
fourcc = -fourcc;
if (fourcc == 0x52494646) { // 'RIFF'be
if (prefix_data.len < 12) {
return prefix_closed ? 0 : -1;
}
uint32_t x = wuffs_base__peek_u32be__no_bounds_check(prefix_data.ptr + 8);
if (x == 0x57454250) { // 'WEBP'be
return 0x57454250; // 'WEBP'be
}
} else if (fourcc == 0x30302020) { // '00 'be
// Binary data starting with multiple 0x00 NUL bytes is quite common.
// Unfortunately, some file formats also don't start with a magic
// identifier, so we have to use heuristics (where the order matters, the
// same as /usr/bin/file's magic/Magdir tables) as best we can. Maybe
// it's TGA, ICO/CUR, etc. Maybe it's something else.
int32_t tga = wuffs_base__magic_number_guess_fourcc__maybe_tga(
prefix_data, prefix_closed);
if (tga != 0) {
return tga;
}
int32_t ico = wuffs_base__magic_number_guess_fourcc__maybe_ico(
prefix_data, prefix_closed);
if (ico != 0) {
return ico;
}
if (prefix_data.len < 4) {
return prefix_closed ? 0 : -1;
} else if ((prefix_data.ptr[2] != 0x00) &&
((prefix_data.ptr[2] >= 0x80) ||
(prefix_data.ptr[3] != 0x00))) {
// Roughly speaking, this could be a non-degenerate (non-0-width and
// non-0-height) WBMP image.
return 0x57424D50; // 'WBMP'be
}
return 0;
}
}
return fourcc;
}
#endif // !defined(WUFFS_CONFIG__MODULES) ||
// defined(WUFFS_CONFIG__MODULE__BASE) ||
// defined(WUFFS_CONFIG__MODULE__BASE__MAGIC)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
defined(WUFFS_CONFIG__MODULE__BASE__PIXCONV)
// ---------------- Pixel Swizzler
static inline uint32_t //
wuffs_base__swap_u32_argb_abgr(uint32_t u) {
uint32_t o = u & 0xFF00FF00ul;
uint32_t r = u & 0x00FF0000ul;
uint32_t b = u & 0x000000FFul;
return o | (r >> 16) | (b << 16);
}
static inline uint64_t //
wuffs_base__swap_u64_argb_abgr(uint64_t u) {
uint64_t o = u & 0xFFFF0000FFFF0000ull;
uint64_t r = u & 0x0000FFFF00000000ull;
uint64_t b = u & 0x000000000000FFFFull;
return o | (r >> 32) | (b << 32);
}
static inline uint32_t //
wuffs_base__color_u64__as__color_u32__swap_u32_argb_abgr(uint64_t c) {
uint32_t a = ((uint32_t)(0xFF & (c >> 56)));
uint32_t r = ((uint32_t)(0xFF & (c >> 40)));
uint32_t g = ((uint32_t)(0xFF & (c >> 24)));
uint32_t b = ((uint32_t)(0xFF & (c >> 8)));
return (a << 24) | (b << 16) | (g << 8) | (r << 0);
}
// --------
WUFFS_BASE__MAYBE_STATIC wuffs_base__color_u32_argb_premul //
wuffs_base__pixel_buffer__color_u32_at(const wuffs_base__pixel_buffer* pb,
uint32_t x,
uint32_t y) {
if (!pb || (x >= pb->pixcfg.private_impl.width) ||
(y >= pb->pixcfg.private_impl.height)) {
return 0;
}
if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
// TODO: support planar formats.
return 0;
}
size_t stride = pb->private_impl.planes[0].stride;
const uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y));
switch (pb->pixcfg.private_impl.pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
return wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)));
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: {
uint8_t* palette = pb->private_impl.planes[3].ptr;
return wuffs_base__peek_u32le__no_bounds_check(palette +
(4 * ((size_t)row[x])));
}
// Common formats above. Rarer formats below.
case WUFFS_BASE__PIXEL_FORMAT__Y:
return 0xFF000000 | (0x00010101 * ((uint32_t)(row[x])));
case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
return 0xFF000000 | (0x00010101 * ((uint32_t)(row[(2 * x) + 1])));
case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
return 0xFF000000 | (0x00010101 * ((uint32_t)(row[(2 * x) + 0])));
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: {
uint8_t* palette = pb->private_impl.planes[3].ptr;
return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__peek_u32le__no_bounds_check(palette +
(4 * ((size_t)row[x]))));
}
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
return wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
wuffs_base__peek_u16le__no_bounds_check(row + (2 * ((size_t)x))));
case WUFFS_BASE__PIXEL_FORMAT__BGR:
return 0xFF000000 |
wuffs_base__peek_u24le__no_bounds_check(row + (3 * ((size_t)x)));
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))));
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
return wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__peek_u64le__no_bounds_check(row + (8 * ((size_t)x))));
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
return 0xFF000000 |
wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)));
case WUFFS_BASE__PIXEL_FORMAT__RGB:
return wuffs_base__swap_u32_argb_abgr(
0xFF000000 |
wuffs_base__peek_u24le__no_bounds_check(row + (3 * ((size_t)x))));
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
return wuffs_base__swap_u32_argb_abgr(
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__peek_u32le__no_bounds_check(row +
(4 * ((size_t)x)))));
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
return wuffs_base__swap_u32_argb_abgr(
wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))));
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
return wuffs_base__swap_u32_argb_abgr(
0xFF000000 |
wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))));
default:
// TODO: support more formats.
break;
}
return 0;
}
// --------
WUFFS_BASE__MAYBE_STATIC wuffs_base__status //
wuffs_base__pixel_buffer__set_color_u32_at(
wuffs_base__pixel_buffer* pb,
uint32_t x,
uint32_t y,
wuffs_base__color_u32_argb_premul color) {
if (!pb) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if ((x >= pb->pixcfg.private_impl.width) ||
(y >= pb->pixcfg.private_impl.height)) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
// TODO: support planar formats.
return wuffs_base__make_status(wuffs_base__error__unsupported_option);
}
size_t stride = pb->private_impl.planes[0].stride;
uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y));
switch (pb->pixcfg.private_impl.pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
wuffs_base__poke_u32le__no_bounds_check(row + (4 * ((size_t)x)), color);
break;
// Common formats above. Rarer formats below.
case WUFFS_BASE__PIXEL_FORMAT__Y:
wuffs_base__poke_u8__no_bounds_check(
row + ((size_t)x),
wuffs_base__color_u32_argb_premul__as__color_u8_gray(color));
break;
case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
wuffs_base__poke_u16le__no_bounds_check(
row + (2 * ((size_t)x)),
wuffs_base__color_u32_argb_premul__as__color_u16_gray(color));
break;
case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
wuffs_base__poke_u16be__no_bounds_check(
row + (2 * ((size_t)x)),
wuffs_base__color_u32_argb_premul__as__color_u16_gray(color));
break;
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
wuffs_base__poke_u8__no_bounds_check(
row + ((size_t)x), wuffs_base__pixel_palette__closest_element(
wuffs_base__pixel_buffer__palette(pb),
pb->pixcfg.private_impl.pixfmt, color));
break;
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
wuffs_base__poke_u16le__no_bounds_check(
row + (2 * ((size_t)x)),
wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(color));
break;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
wuffs_base__poke_u24le__no_bounds_check(row + (3 * ((size_t)x)), color);
break;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
wuffs_base__poke_u32le__no_bounds_check(
row + (4 * ((size_t)x)),
wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
color));
break;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
wuffs_base__poke_u64le__no_bounds_check(
row + (8 * ((size_t)x)),
wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul(
color));
break;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
wuffs_base__poke_u24le__no_bounds_check(
row + (3 * ((size_t)x)), wuffs_base__swap_u32_argb_abgr(color));
break;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
wuffs_base__poke_u32le__no_bounds_check(
row + (4 * ((size_t)x)),
wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
wuffs_base__swap_u32_argb_abgr(color)));
break;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
wuffs_base__poke_u32le__no_bounds_check(
row + (4 * ((size_t)x)), wuffs_base__swap_u32_argb_abgr(color));
break;
default:
// TODO: support more formats.
return wuffs_base__make_status(wuffs_base__error__unsupported_option);
}
return wuffs_base__make_status(NULL);
}
// --------
static inline void //
wuffs_base__pixel_buffer__set_color_u32_fill_rect__xx(
wuffs_base__pixel_buffer* pb,
wuffs_base__rect_ie_u32 rect,
uint16_t color) {
size_t stride = pb->private_impl.planes[0].stride;
uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
if ((stride == (2 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
uint8_t* ptr =
pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
size_t n;
for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
wuffs_base__poke_u16le__no_bounds_check(ptr, color);
ptr += 2;
}
return;
}
uint32_t y;
for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
(2 * ((size_t)rect.min_incl_x));
uint32_t n;
for (n = width; n > 0; n--) {
wuffs_base__poke_u16le__no_bounds_check(ptr, color);
ptr += 2;
}
}
}
static inline void //
wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxx(
wuffs_base__pixel_buffer* pb,
wuffs_base__rect_ie_u32 rect,
uint32_t color) {
size_t stride = pb->private_impl.planes[0].stride;
uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
if ((stride == (3 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
uint8_t* ptr =
pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
size_t n;
for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
wuffs_base__poke_u24le__no_bounds_check(ptr, color);
ptr += 3;
}
return;
}
uint32_t y;
for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
(3 * ((size_t)rect.min_incl_x));
uint32_t n;
for (n = width; n > 0; n--) {
wuffs_base__poke_u24le__no_bounds_check(ptr, color);
ptr += 3;
}
}
}
static inline void //
wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(
wuffs_base__pixel_buffer* pb,
wuffs_base__rect_ie_u32 rect,
uint32_t color) {
size_t stride = pb->private_impl.planes[0].stride;
uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
if ((stride == (4 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
uint8_t* ptr =
pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
size_t n;
for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
wuffs_base__poke_u32le__no_bounds_check(ptr, color);
ptr += 4;
}
return;
}
uint32_t y;
for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
(4 * ((size_t)rect.min_incl_x));
uint32_t n;
for (n = width; n > 0; n--) {
wuffs_base__poke_u32le__no_bounds_check(ptr, color);
ptr += 4;
}
}
}
static inline void //
wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxxxxxx(
wuffs_base__pixel_buffer* pb,
wuffs_base__rect_ie_u32 rect,
uint64_t color) {
size_t stride = pb->private_impl.planes[0].stride;
uint32_t width = wuffs_base__rect_ie_u32__width(&rect);
if ((stride == (8 * ((uint64_t)width))) && (rect.min_incl_x == 0)) {
uint8_t* ptr =
pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y));
uint32_t height = wuffs_base__rect_ie_u32__height(&rect);
size_t n;
for (n = ((size_t)width) * ((size_t)height); n > 0; n--) {
wuffs_base__poke_u64le__no_bounds_check(ptr, color);
ptr += 8;
}
return;
}
uint32_t y;
for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) +
(8 * ((size_t)rect.min_incl_x));
uint32_t n;
for (n = width; n > 0; n--) {
wuffs_base__poke_u64le__no_bounds_check(ptr, color);
ptr += 8;
}
}
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__status //
wuffs_base__pixel_buffer__set_color_u32_fill_rect(
wuffs_base__pixel_buffer* pb,
wuffs_base__rect_ie_u32 rect,
wuffs_base__color_u32_argb_premul color) {
if (!pb) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
} else if (wuffs_base__rect_ie_u32__is_empty(&rect)) {
return wuffs_base__make_status(NULL);
}
wuffs_base__rect_ie_u32 bounds =
wuffs_base__pixel_config__bounds(&pb->pixcfg);
if (!wuffs_base__rect_ie_u32__contains_rect(&bounds, rect)) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) {
// TODO: support planar formats.
return wuffs_base__make_status(wuffs_base__error__unsupported_option);
}
switch (pb->pixcfg.private_impl.pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(pb, rect, color);
return wuffs_base__make_status(NULL);
// Common formats above. Rarer formats below.
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
wuffs_base__pixel_buffer__set_color_u32_fill_rect__xx(
pb, rect,
wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(color));
return wuffs_base__make_status(NULL);
case WUFFS_BASE__PIXEL_FORMAT__BGR:
wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxx(pb, rect, color);
return wuffs_base__make_status(NULL);
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(
pb, rect,
wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
color));
return wuffs_base__make_status(NULL);
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxxxxxx(
pb, rect,
wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul(
color));
return wuffs_base__make_status(NULL);
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(
pb, rect,
wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
wuffs_base__swap_u32_argb_abgr(color)));
return wuffs_base__make_status(NULL);
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(
pb, rect, wuffs_base__swap_u32_argb_abgr(color));
return wuffs_base__make_status(NULL);
}
uint32_t y;
for (y = rect.min_incl_y; y < rect.max_excl_y; y++) {
uint32_t x;
for (x = rect.min_incl_x; x < rect.max_excl_x; x++) {
wuffs_base__pixel_buffer__set_color_u32_at(pb, x, y, color);
}
}
return wuffs_base__make_status(NULL);
}
// --------
WUFFS_BASE__MAYBE_STATIC uint8_t //
wuffs_base__pixel_palette__closest_element(
wuffs_base__slice_u8 palette_slice,
wuffs_base__pixel_format palette_format,
wuffs_base__color_u32_argb_premul c) {
size_t n = palette_slice.len / 4;
if (n > (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
n = (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4);
}
size_t best_index = 0;
uint64_t best_score = 0xFFFFFFFFFFFFFFFF;
// Work in 16-bit color.
uint32_t ca = 0x101 * (0xFF & (c >> 24));
uint32_t cr = 0x101 * (0xFF & (c >> 16));
uint32_t cg = 0x101 * (0xFF & (c >> 8));
uint32_t cb = 0x101 * (0xFF & (c >> 0));
switch (palette_format.repr) {
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: {
bool nonpremul = palette_format.repr ==
WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL;
size_t i;
for (i = 0; i < n; i++) {
// Work in 16-bit color.
uint32_t pb = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 0]));
uint32_t pg = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 1]));
uint32_t pr = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 2]));
uint32_t pa = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 3]));
// Convert to premultiplied alpha.
if (nonpremul && (pa != 0xFFFF)) {
pb = (pb * pa) / 0xFFFF;
pg = (pg * pa) / 0xFFFF;
pr = (pr * pa) / 0xFFFF;
}
// These deltas are conceptually int32_t (signed) but after squaring,
// it's equivalent to work in uint32_t (unsigned).
pb -= cb;
pg -= cg;
pr -= cr;
pa -= ca;
uint64_t score = ((uint64_t)(pb * pb)) + ((uint64_t)(pg * pg)) +
((uint64_t)(pr * pr)) + ((uint64_t)(pa * pa));
if (best_score > score) {
best_score = score;
best_index = i;
}
}
break;
}
}
return (uint8_t)best_index;
}
// --------
static inline uint32_t //
wuffs_base__composite_nonpremul_nonpremul_u32_axxx(uint32_t dst_nonpremul,
uint32_t src_nonpremul) {
// Extract 16-bit color components.
//
// If the destination is transparent then SRC_OVER is equivalent to SRC: just
// return src_nonpremul. This isn't just an optimization (skipping the rest
// of the function's computation). It also preserves the nonpremul
// distinction between e.g. transparent red and transparent blue that would
// otherwise be lost by converting from nonpremul to premul and back.
uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24));
if (da == 0) {
return src_nonpremul;
}
uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16));
uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8));
uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0));
uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24));
uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16));
uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8));
uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0));
// Convert dst from nonpremul to premul.
dr = (dr * da) / 0xFFFF;
dg = (dg * da) / 0xFFFF;
db = (db * da) / 0xFFFF;
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
da = sa + ((da * ia) / 0xFFFF);
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert dst from premul to nonpremul.
if (da != 0) {
dr = (dr * 0xFFFF) / da;
dg = (dg * 0xFFFF) / da;
db = (db * 0xFFFF) / da;
}
// Convert from 16-bit color to 8-bit color.
da >>= 8;
dr >>= 8;
dg >>= 8;
db >>= 8;
// Combine components.
return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
}
static inline uint64_t //
wuffs_base__composite_nonpremul_nonpremul_u64_axxx(uint64_t dst_nonpremul,
uint64_t src_nonpremul) {
// Extract components.
//
// If the destination is transparent then SRC_OVER is equivalent to SRC: just
// return src_nonpremul. This isn't just an optimization (skipping the rest
// of the function's computation). It also preserves the nonpremul
// distinction between e.g. transparent red and transparent blue that would
// otherwise be lost by converting from nonpremul to premul and back.
uint64_t da = 0xFFFF & (dst_nonpremul >> 48);
if (da == 0) {
return src_nonpremul;
}
uint64_t dr = 0xFFFF & (dst_nonpremul >> 32);
uint64_t dg = 0xFFFF & (dst_nonpremul >> 16);
uint64_t db = 0xFFFF & (dst_nonpremul >> 0);
uint64_t sa = 0xFFFF & (src_nonpremul >> 48);
uint64_t sr = 0xFFFF & (src_nonpremul >> 32);
uint64_t sg = 0xFFFF & (src_nonpremul >> 16);
uint64_t sb = 0xFFFF & (src_nonpremul >> 0);
// Convert dst from nonpremul to premul.
dr = (dr * da) / 0xFFFF;
dg = (dg * da) / 0xFFFF;
db = (db * da) / 0xFFFF;
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint64_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
da = sa + ((da * ia) / 0xFFFF);
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert dst from premul to nonpremul.
if (da != 0) {
dr = (dr * 0xFFFF) / da;
dg = (dg * 0xFFFF) / da;
db = (db * 0xFFFF) / da;
}
// Combine components.
return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
}
static inline uint32_t //
wuffs_base__composite_nonpremul_premul_u32_axxx(uint32_t dst_nonpremul,
uint32_t src_premul) {
// Extract 16-bit color components.
uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24));
uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16));
uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8));
uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0));
uint32_t sa = 0x101 * (0xFF & (src_premul >> 24));
uint32_t sr = 0x101 * (0xFF & (src_premul >> 16));
uint32_t sg = 0x101 * (0xFF & (src_premul >> 8));
uint32_t sb = 0x101 * (0xFF & (src_premul >> 0));
// Convert dst from nonpremul to premul.
dr = (dr * da) / 0xFFFF;
dg = (dg * da) / 0xFFFF;
db = (db * da) / 0xFFFF;
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (premul) over dst (premul).
da = sa + ((da * ia) / 0xFFFF);
dr = sr + ((dr * ia) / 0xFFFF);
dg = sg + ((dg * ia) / 0xFFFF);
db = sb + ((db * ia) / 0xFFFF);
// Convert dst from premul to nonpremul.
if (da != 0) {
dr = (dr * 0xFFFF) / da;
dg = (dg * 0xFFFF) / da;
db = (db * 0xFFFF) / da;
}
// Convert from 16-bit color to 8-bit color.
da >>= 8;
dr >>= 8;
dg >>= 8;
db >>= 8;
// Combine components.
return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
}
static inline uint64_t //
wuffs_base__composite_nonpremul_premul_u64_axxx(uint64_t dst_nonpremul,
uint64_t src_premul) {
// Extract components.
uint64_t da = 0xFFFF & (dst_nonpremul >> 48);
uint64_t dr = 0xFFFF & (dst_nonpremul >> 32);
uint64_t dg = 0xFFFF & (dst_nonpremul >> 16);
uint64_t db = 0xFFFF & (dst_nonpremul >> 0);
uint64_t sa = 0xFFFF & (src_premul >> 48);
uint64_t sr = 0xFFFF & (src_premul >> 32);
uint64_t sg = 0xFFFF & (src_premul >> 16);
uint64_t sb = 0xFFFF & (src_premul >> 0);
// Convert dst from nonpremul to premul.
dr = (dr * da) / 0xFFFF;
dg = (dg * da) / 0xFFFF;
db = (db * da) / 0xFFFF;
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint64_t ia = 0xFFFF - sa;
// Composite src (premul) over dst (premul).
da = sa + ((da * ia) / 0xFFFF);
dr = sr + ((dr * ia) / 0xFFFF);
dg = sg + ((dg * ia) / 0xFFFF);
db = sb + ((db * ia) / 0xFFFF);
// Convert dst from premul to nonpremul.
if (da != 0) {
dr = (dr * 0xFFFF) / da;
dg = (dg * 0xFFFF) / da;
db = (db * 0xFFFF) / da;
}
// Combine components.
return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
}
static inline uint32_t //
wuffs_base__composite_premul_nonpremul_u32_axxx(uint32_t dst_premul,
uint32_t src_nonpremul) {
// Extract 16-bit color components.
uint32_t da = 0x101 * (0xFF & (dst_premul >> 24));
uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16));
uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8));
uint32_t db = 0x101 * (0xFF & (dst_premul >> 0));
uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24));
uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16));
uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8));
uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0));
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
da = sa + ((da * ia) / 0xFFFF);
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert from 16-bit color to 8-bit color.
da >>= 8;
dr >>= 8;
dg >>= 8;
db >>= 8;
// Combine components.
return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
}
static inline uint64_t //
wuffs_base__composite_premul_nonpremul_u64_axxx(uint64_t dst_premul,
uint64_t src_nonpremul) {
// Extract components.
uint64_t da = 0xFFFF & (dst_premul >> 48);
uint64_t dr = 0xFFFF & (dst_premul >> 32);
uint64_t dg = 0xFFFF & (dst_premul >> 16);
uint64_t db = 0xFFFF & (dst_premul >> 0);
uint64_t sa = 0xFFFF & (src_nonpremul >> 48);
uint64_t sr = 0xFFFF & (src_nonpremul >> 32);
uint64_t sg = 0xFFFF & (src_nonpremul >> 16);
uint64_t sb = 0xFFFF & (src_nonpremul >> 0);
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint64_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
da = sa + ((da * ia) / 0xFFFF);
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Combine components.
return (db << 0) | (dg << 16) | (dr << 32) | (da << 48);
}
static inline uint32_t //
wuffs_base__composite_premul_premul_u32_axxx(uint32_t dst_premul,
uint32_t src_premul) {
// Extract 16-bit color components.
uint32_t da = 0x101 * (0xFF & (dst_premul >> 24));
uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16));
uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8));
uint32_t db = 0x101 * (0xFF & (dst_premul >> 0));
uint32_t sa = 0x101 * (0xFF & (src_premul >> 24));
uint32_t sr = 0x101 * (0xFF & (src_premul >> 16));
uint32_t sg = 0x101 * (0xFF & (src_premul >> 8));
uint32_t sb = 0x101 * (0xFF & (src_premul >> 0));
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (premul) over dst (premul).
da = sa + ((da * ia) / 0xFFFF);
dr = sr + ((dr * ia) / 0xFFFF);
dg = sg + ((dg * ia) / 0xFFFF);
db = sb + ((db * ia) / 0xFFFF);
// Convert from 16-bit color to 8-bit color.
da >>= 8;
dr >>= 8;
dg >>= 8;
db >>= 8;
// Combine components.
return (db << 0) | (dg << 8) | (dr << 16) | (da << 24);
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888(uint8_t* dst_ptr,
size_t dst_len,
const uint8_t* src_ptr,
size_t src_len,
bool nonpremul) {
size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n--) {
uint32_t argb = wuffs_base__peek_u32le__no_bounds_check(s);
if (nonpremul) {
argb =
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(argb);
}
uint32_t b5 = 0x1F & (argb >> (8 - 5));
uint32_t g6 = 0x3F & (argb >> (16 - 6));
uint32_t r5 = 0x1F & (argb >> (24 - 5));
uint32_t alpha = argb & 0xFF000000;
wuffs_base__poke_u32le__no_bounds_check(
d, alpha | (r5 << 11) | (g6 << 5) | (b5 << 0));
s += 4;
d += 4;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__swap_rgb_bgr(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t len = (dst_len < src_len ? dst_len : src_len) / 3;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n--) {
uint8_t s0 = s[0];
uint8_t s1 = s[1];
uint8_t s2 = s[2];
d[0] = s2;
d[1] = s1;
d[2] = s0;
s += 3;
d += 3;
}
return len;
}
// โ€ผ WUFFS MULTI-FILE SECTION +x86_sse42
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
static uint64_t //
wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
__m128i shuffle = _mm_set_epi8(+0x0F, +0x0C, +0x0D, +0x0E, //
+0x0B, +0x08, +0x09, +0x0A, //
+0x07, +0x04, +0x05, +0x06, //
+0x03, +0x00, +0x01, +0x02);
while (n >= 4) {
__m128i x;
x = _mm_lddqu_si128((const __m128i*)(const void*)s);
x = _mm_shuffle_epi8(x, shuffle);
_mm_storeu_si128((__m128i*)(void*)d, x);
s += 4 * 4;
d += 4 * 4;
n -= 4;
}
while (n--) {
uint8_t s0 = s[0];
uint8_t s1 = s[1];
uint8_t s2 = s[2];
uint8_t s3 = s[3];
d[0] = s2;
d[1] = s1;
d[2] = s0;
d[3] = s3;
s += 4;
d += 4;
}
return len;
}
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// โ€ผ WUFFS MULTI-FILE SECTION -x86_sse42
static uint64_t //
wuffs_base__pixel_swizzler__swap_rgbx_bgrx(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t len = (dst_len < src_len ? dst_len : src_len) / 4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n--) {
uint8_t s0 = s[0];
uint8_t s1 = s[1];
uint8_t s2 = s[2];
uint8_t s3 = s[3];
d[0] = s2;
d[1] = s1;
d[2] = s0;
d[3] = s3;
s += 4;
d += 4;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__copy_1_1(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t len = (dst_len < src_len) ? dst_len : src_len;
if (len > 0) {
memmove(dst_ptr, src_ptr, len);
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__copy_2_2(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len2 = src_len / 2;
size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
if (len > 0) {
memmove(dst_ptr, src_ptr, len * 2);
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__copy_3_3(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len3 = src_len / 3;
size_t len = (dst_len3 < src_len3) ? dst_len3 : src_len3;
if (len > 0) {
memmove(dst_ptr, src_ptr, len * 3);
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__copy_4_4(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
if (len > 0) {
memmove(dst_ptr, src_ptr, len * 4);
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__copy_8_8(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t src_len8 = src_len / 8;
size_t len = (dst_len8 < src_len8) ? dst_len8 : src_len8;
if (len > 0) {
memmove(dst_ptr, src_ptr, len * 8);
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__bgr(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len3 = src_len / 3;
size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t b5 = s[0] >> 3;
uint32_t g6 = s[1] >> 2;
uint32_t r5 = s[2] >> 3;
uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
s += 1 * 3;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__bgrx(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len4 = src_len / 4;
size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t b5 = s[0] >> 3;
uint32_t g6 = s[1] >> 2;
uint32_t r5 = s[2] >> 3;
uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
s += 1 * 4;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len4 = src_len / 4;
size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__poke_u16le__no_bounds_check(
d + (0 * 2),
wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))));
s += 1 * 4;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len8 = src_len / 8;
size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__poke_u16le__no_bounds_check(
d + (0 * 2),
wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)))));
s += 1 * 8;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len4 = src_len / 4;
size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
// Extract 16-bit color components.
uint32_t sa = 0x101 * ((uint32_t)s[3]);
uint32_t sr = 0x101 * ((uint32_t)s[2]);
uint32_t sg = 0x101 * ((uint32_t)s[1]);
uint32_t sb = 0x101 * ((uint32_t)s[0]);
// Convert from 565 color to 16-bit color.
uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
uint32_t dr = (0x8421 * old_r5) >> 4;
uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
uint32_t dg = (0x1041 * old_g6) >> 2;
uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
uint32_t db = (0x8421 * old_b5) >> 4;
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert from 16-bit color to 565 color and combine the components.
uint32_t new_r5 = 0x1F & (dr >> 11);
uint32_t new_g6 = 0x3F & (dg >> 10);
uint32_t new_b5 = 0x1F & (db >> 11);
uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
s += 1 * 4;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len8 = src_len / 8;
size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
// Extract 16-bit color components.
uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6));
uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4));
uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2));
uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0));
// Convert from 565 color to 16-bit color.
uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
uint32_t dr = (0x8421 * old_r5) >> 4;
uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
uint32_t dg = (0x1041 * old_g6) >> 2;
uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
uint32_t db = (0x8421 * old_b5) >> 4;
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert from 16-bit color to 565 color and combine the components.
uint32_t new_r5 = 0x1F & (dr >> 11);
uint32_t new_g6 = 0x3F & (dg >> 10);
uint32_t new_b5 = 0x1F & (db >> 11);
uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
s += 1 * 8;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len4 = src_len / 4;
size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__poke_u16le__no_bounds_check(
d + (0 * 2), wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
s += 1 * 4;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len4 = src_len / 4;
size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
// Extract 16-bit color components.
uint32_t sa = 0x101 * ((uint32_t)s[3]);
uint32_t sr = 0x101 * ((uint32_t)s[2]);
uint32_t sg = 0x101 * ((uint32_t)s[1]);
uint32_t sb = 0x101 * ((uint32_t)s[0]);
// Convert from 565 color to 16-bit color.
uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
uint32_t dr = (0x8421 * old_r5) >> 4;
uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
uint32_t dg = (0x1041 * old_g6) >> 2;
uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
uint32_t db = (0x8421 * old_b5) >> 4;
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (premul) over dst (premul).
dr = sr + ((dr * ia) / 0xFFFF);
dg = sg + ((dg * ia) / 0xFFFF);
db = sb + ((db * ia) / 0xFFFF);
// Convert from 16-bit color to 565 color and combine the components.
uint32_t new_r5 = 0x1F & (dr >> 11);
uint32_t new_g6 = 0x3F & (dg >> 10);
uint32_t new_b5 = 0x1F & (db >> 11);
uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
s += 1 * 4;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__rgb(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len3 = src_len / 3;
size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t r5 = s[0] >> 3;
uint32_t g6 = s[1] >> 2;
uint32_t b5 = s[2] >> 3;
uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0);
wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
s += 1 * 3;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len4 = src_len / 4;
size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__poke_u16le__no_bounds_check(
d + (0 * 2),
wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
wuffs_base__swap_u32_argb_abgr(
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))))));
s += 1 * 4;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len4 = src_len / 4;
size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
// Extract 16-bit color components.
uint32_t sa = 0x101 * ((uint32_t)s[3]);
uint32_t sb = 0x101 * ((uint32_t)s[2]);
uint32_t sg = 0x101 * ((uint32_t)s[1]);
uint32_t sr = 0x101 * ((uint32_t)s[0]);
// Convert from 565 color to 16-bit color.
uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
uint32_t dr = (0x8421 * old_r5) >> 4;
uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
uint32_t dg = (0x1041 * old_g6) >> 2;
uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
uint32_t db = (0x8421 * old_b5) >> 4;
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert from 16-bit color to 565 color and combine the components.
uint32_t new_r5 = 0x1F & (dr >> 11);
uint32_t new_g6 = 0x3F & (dg >> 10);
uint32_t new_b5 = 0x1F & (db >> 11);
uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
s += 1 * 4;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len4 = src_len / 4;
size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__poke_u16le__no_bounds_check(
d + (0 * 2),
wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
wuffs_base__swap_u32_argb_abgr(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))));
s += 1 * 4;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len4 = src_len / 4;
size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
// Extract 16-bit color components.
uint32_t sa = 0x101 * ((uint32_t)s[3]);
uint32_t sb = 0x101 * ((uint32_t)s[2]);
uint32_t sg = 0x101 * ((uint32_t)s[1]);
uint32_t sr = 0x101 * ((uint32_t)s[0]);
// Convert from 565 color to 16-bit color.
uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2));
uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11);
uint32_t dr = (0x8421 * old_r5) >> 4;
uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5);
uint32_t dg = (0x1041 * old_g6) >> 2;
uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0);
uint32_t db = (0x8421 * old_b5) >> 4;
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (premul) over dst (premul).
dr = sr + ((dr * ia) / 0xFFFF);
dg = sg + ((dg * ia) / 0xFFFF);
db = sb + ((db * ia) / 0xFFFF);
// Convert from 16-bit color to 565 color and combine the components.
uint32_t new_r5 = 0x1F & (dr >> 11);
uint32_t new_g6 = 0x3F & (dg >> 10);
uint32_t new_b5 = 0x1F & (db >> 11);
uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0);
wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565);
s += 1 * 4;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__y(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t y5 = s[0] >> 3;
uint32_t y6 = s[0] >> 2;
uint32_t rgb_565 = (y5 << 11) | (y6 << 5) | (y5 << 0);
wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
s += 1 * 1;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__y_16be(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len2 = src_len / 2;
size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t y5 = s[0] >> 3;
uint32_t y6 = s[0] >> 2;
uint32_t rgb_565 = (y5 << 11) | (y6 << 5) | (y5 << 0);
wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565);
s += 1 * 2;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__index__src(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return 0;
}
size_t dst_len2 = dst_len / 2;
size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
const size_t loop_unroll_count = 4;
while (n >= loop_unroll_count) {
wuffs_base__poke_u16le__no_bounds_check(
d + (0 * 2), wuffs_base__peek_u16le__no_bounds_check(
dst_palette_ptr + ((size_t)s[0] * 4)));
wuffs_base__poke_u16le__no_bounds_check(
d + (1 * 2), wuffs_base__peek_u16le__no_bounds_check(
dst_palette_ptr + ((size_t)s[1] * 4)));
wuffs_base__poke_u16le__no_bounds_check(
d + (2 * 2), wuffs_base__peek_u16le__no_bounds_check(
dst_palette_ptr + ((size_t)s[2] * 4)));
wuffs_base__poke_u16le__no_bounds_check(
d + (3 * 2), wuffs_base__peek_u16le__no_bounds_check(
dst_palette_ptr + ((size_t)s[3] * 4)));
s += loop_unroll_count * 1;
d += loop_unroll_count * 2;
n -= loop_unroll_count;
}
while (n >= 1) {
wuffs_base__poke_u16le__no_bounds_check(
d + (0 * 2), wuffs_base__peek_u16le__no_bounds_check(
dst_palette_ptr + ((size_t)s[0] * 4)));
s += 1 * 1;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__index_bgra_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return 0;
}
size_t dst_len2 = dst_len / 2;
size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t d0 = wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2)));
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
wuffs_base__poke_u16le__no_bounds_check(
d + (0 * 2),
wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(
wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0)));
s += 1 * 1;
d += 1 * 2;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr_565__index_binary_alpha__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return 0;
}
size_t dst_len2 = dst_len / 2;
size_t len = (dst_len2 < src_len) ? dst_len2 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
if (s0) {
wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)s0);
}
s += 1 * 1;
d += 1 * 2;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__bgr__bgr_565(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len2 = src_len / 2;
size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t s0 = wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)));
wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
s += 1 * 2;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len4 = src_len / 4;
size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t s0 =
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
s += 1 * 4;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len8 = src_len / 8;
size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t s0 =
wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)));
wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
s += 1 * 8;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len4 = src_len / 4;
size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
// Extract 16-bit color components.
uint32_t dr = 0x101 * ((uint32_t)d[2]);
uint32_t dg = 0x101 * ((uint32_t)d[1]);
uint32_t db = 0x101 * ((uint32_t)d[0]);
uint32_t sa = 0x101 * ((uint32_t)s[3]);
uint32_t sr = 0x101 * ((uint32_t)s[2]);
uint32_t sg = 0x101 * ((uint32_t)s[1]);
uint32_t sb = 0x101 * ((uint32_t)s[0]);
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert from 16-bit color to 8-bit color.
d[0] = (uint8_t)(db >> 8);
d[1] = (uint8_t)(dg >> 8);
d[2] = (uint8_t)(dr >> 8);
s += 1 * 4;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len8 = src_len / 8;
size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
// Extract 16-bit color components.
uint32_t dr = 0x101 * ((uint32_t)d[2]);
uint32_t dg = 0x101 * ((uint32_t)d[1]);
uint32_t db = 0x101 * ((uint32_t)d[0]);
uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6));
uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4));
uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2));
uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0));
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert from 16-bit color to 8-bit color.
d[0] = (uint8_t)(db >> 8);
d[1] = (uint8_t)(dg >> 8);
d[2] = (uint8_t)(dr >> 8);
s += 1 * 8;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr__bgra_premul__src(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len4 = src_len / 4;
size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint8_t s0 = s[0];
uint8_t s1 = s[1];
uint8_t s2 = s[2];
d[0] = s0;
d[1] = s1;
d[2] = s2;
s += 1 * 4;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr__bgra_premul__src_over(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len4 = src_len / 4;
size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
// Extract 16-bit color components.
uint32_t dr = 0x101 * ((uint32_t)d[2]);
uint32_t dg = 0x101 * ((uint32_t)d[1]);
uint32_t db = 0x101 * ((uint32_t)d[0]);
uint32_t sa = 0x101 * ((uint32_t)s[3]);
uint32_t sr = 0x101 * ((uint32_t)s[2]);
uint32_t sg = 0x101 * ((uint32_t)s[1]);
uint32_t sb = 0x101 * ((uint32_t)s[0]);
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (premul) over dst (premul).
dr = sr + ((dr * ia) / 0xFFFF);
dg = sg + ((dg * ia) / 0xFFFF);
db = sb + ((db * ia) / 0xFFFF);
// Convert from 16-bit color to 8-bit color.
d[0] = (uint8_t)(db >> 8);
d[1] = (uint8_t)(dg >> 8);
d[2] = (uint8_t)(dr >> 8);
s += 1 * 4;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len4 = src_len / 4;
size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
s += 1 * 4;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len4 = src_len / 4;
size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
// Extract 16-bit color components.
uint32_t dr = 0x101 * ((uint32_t)d[2]);
uint32_t dg = 0x101 * ((uint32_t)d[1]);
uint32_t db = 0x101 * ((uint32_t)d[0]);
uint32_t sa = 0x101 * ((uint32_t)s[3]);
uint32_t sb = 0x101 * ((uint32_t)s[2]);
uint32_t sg = 0x101 * ((uint32_t)s[1]);
uint32_t sr = 0x101 * ((uint32_t)s[0]);
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (nonpremul) over dst (premul).
dr = ((sr * sa) + (dr * ia)) / 0xFFFF;
dg = ((sg * sa) + (dg * ia)) / 0xFFFF;
db = ((sb * sa) + (db * ia)) / 0xFFFF;
// Convert from 16-bit color to 8-bit color.
d[0] = (uint8_t)(db >> 8);
d[1] = (uint8_t)(dg >> 8);
d[2] = (uint8_t)(dr >> 8);
s += 1 * 4;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr__rgba_premul__src(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len4 = src_len / 4;
size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint8_t s0 = s[0];
uint8_t s1 = s[1];
uint8_t s2 = s[2];
d[0] = s2;
d[1] = s1;
d[2] = s0;
s += 1 * 4;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgr__rgba_premul__src_over(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len4 = src_len / 4;
size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
// Extract 16-bit color components.
uint32_t dr = 0x101 * ((uint32_t)d[2]);
uint32_t dg = 0x101 * ((uint32_t)d[1]);
uint32_t db = 0x101 * ((uint32_t)d[0]);
uint32_t sa = 0x101 * ((uint32_t)s[3]);
uint32_t sb = 0x101 * ((uint32_t)s[2]);
uint32_t sg = 0x101 * ((uint32_t)s[1]);
uint32_t sr = 0x101 * ((uint32_t)s[0]);
// Calculate the inverse of the src-alpha: how much of the dst to keep.
uint32_t ia = 0xFFFF - sa;
// Composite src (premul) over dst (premul).
dr = sr + ((dr * ia) / 0xFFFF);
dg = sg + ((dg * ia) / 0xFFFF);
db = sb + ((db * ia) / 0xFFFF);
// Convert from 16-bit color to 8-bit color.
d[0] = (uint8_t)(db >> 8);
d[1] = (uint8_t)(dg >> 8);
d[2] = (uint8_t)(dr >> 8);
s += 1 * 4;
d += 1 * 3;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len8 = src_len / 8;
size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__color_u64__as__color_u32(
wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))));
s += 1 * 8;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len8 = src_len / 8;
size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint64_t d0 = wuffs_base__color_u32__as__color_u64(
wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__color_u64__as__color_u32(
wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0)));
s += 1 * 8;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__composite_nonpremul_premul_u32_axxx(d0, s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return 0;
}
size_t dst_len4 = dst_len / 4;
size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
s += 1 * 1;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__composite_nonpremul_premul_u32_axxx(d0, s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t src_len4 = src_len / 4;
size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint8_t s0 = s[0];
uint8_t s1 = s[1];
uint8_t s2 = s[2];
uint8_t s3 = s[3];
d[0] = s0;
d[1] = s0;
d[2] = s1;
d[3] = s1;
d[4] = s2;
d[5] = s2;
d[6] = s3;
d[7] = s3;
s += 1 * 4;
d += 1 * 8;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t src_len4 = src_len / 4;
size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
uint64_t s0 = wuffs_base__color_u32__as__color_u64(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
wuffs_base__poke_u64le__no_bounds_check(
d + (0 * 8),
wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
s += 1 * 4;
d += 1 * 8;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul_4x16le__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t src_len8 = src_len / 8;
size_t len = (dst_len8 < src_len8) ? dst_len8 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
wuffs_base__poke_u64le__no_bounds_check(
d + (0 * 8),
wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
s += 1 * 8;
d += 1 * 8;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t src_len4 = src_len / 4;
size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint64_t s0 = wuffs_base__color_u32__as__color_u64(
wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0);
s += 1 * 4;
d += 1 * 8;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t src_len4 = src_len / 4;
size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
uint64_t s0 = wuffs_base__color_u32__as__color_u64(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
wuffs_base__poke_u64le__no_bounds_check(
d + (0 * 8), wuffs_base__composite_nonpremul_premul_u64_axxx(d0, s0));
s += 1 * 4;
d += 1 * 8;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return 0;
}
size_t dst_len8 = dst_len / 8;
size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
uint64_t s0 = wuffs_base__color_u32__as__color_u64(
wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4)));
wuffs_base__poke_u64le__no_bounds_check(
d + (0 * 8),
wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
s += 1 * 1;
d += 1 * 8;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t src_len4 = src_len / 4;
size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint8_t s0 = s[0];
uint8_t s1 = s[1];
uint8_t s2 = s[2];
uint8_t s3 = s[3];
d[0] = s2;
d[1] = s2;
d[2] = s1;
d[3] = s1;
d[4] = s0;
d[5] = s0;
d[6] = s3;
d[7] = s3;
s += 1 * 4;
d += 1 * 8;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t src_len4 = src_len / 4;
size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
uint64_t s0 =
wuffs_base__color_u32__as__color_u64(wuffs_base__swap_u32_argb_abgr(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
wuffs_base__poke_u64le__no_bounds_check(
d + (0 * 8),
wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0));
s += 1 * 4;
d += 1 * 8;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t src_len4 = src_len / 4;
size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint64_t s0 = wuffs_base__color_u32__as__color_u64(
wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(
wuffs_base__swap_u32_argb_abgr(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))));
wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0);
s += 1 * 4;
d += 1 * 8;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t src_len4 = src_len / 4;
size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8));
uint64_t s0 =
wuffs_base__color_u32__as__color_u64(wuffs_base__swap_u32_argb_abgr(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))));
wuffs_base__poke_u64le__no_bounds_check(
d + (0 * 8), wuffs_base__composite_nonpremul_premul_u64_axxx(d0, s0));
s += 1 * 4;
d += 1 * 8;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len8 = src_len / 8;
size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(s0));
s += 1 * 8;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len8 = src_len / 8;
size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint64_t d0 = wuffs_base__color_u32__as__color_u64(
wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__color_u64__as__color_u32(
wuffs_base__composite_premul_nonpremul_u64_axxx(d0, s0)));
s += 1 * 8;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__composite_premul_premul_u32_axxx(d0, s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return 0;
}
size_t dst_len4 = dst_len / 4;
size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0));
s += 1 * 1;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len8 = src_len / 8;
size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__swap_u32_argb_abgr(
wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(
s0)));
s += 1 * 8;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len8 = src_len / 8;
size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint64_t d0 = wuffs_base__color_u32__as__color_u64(
wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
uint64_t s0 = wuffs_base__swap_u64_argb_abgr(
wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__color_u64__as__color_u32(
wuffs_base__composite_premul_nonpremul_u64_axxx(d0, s0)));
s += 1 * 8;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4));
uint32_t s0 = wuffs_base__swap_u32_argb_abgr(
wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__composite_premul_premul_u32_axxx(d0, s0));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__bgrw__bgr(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len3 = src_len / 3;
size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
0xFF000000 | wuffs_base__peek_u24le__no_bounds_check(s + (0 * 3)));
s += 1 * 3;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgrw__bgr_565(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len2 = src_len / 2;
size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2))));
s += 1 * 2;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgrw__bgrx(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
0xFF000000 | wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
// โ€ผ WUFFS MULTI-FILE SECTION +x86_sse42
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
static uint64_t //
wuffs_base__pixel_swizzler__bgrw__rgb__sse42(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len3 = src_len / 3;
size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
__m128i shuffle = _mm_set_epi8(+0x00, +0x09, +0x0A, +0x0B, //
+0x00, +0x06, +0x07, +0x08, //
+0x00, +0x03, +0x04, +0x05, //
+0x00, +0x00, +0x01, +0x02);
__m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00, //
-0x01, +0x00, +0x00, +0x00, //
-0x01, +0x00, +0x00, +0x00, //
-0x01, +0x00, +0x00, +0x00);
while (n >= 6) {
__m128i x;
x = _mm_lddqu_si128((const __m128i*)(const void*)s);
x = _mm_shuffle_epi8(x, shuffle);
x = _mm_or_si128(x, or_ff);
_mm_storeu_si128((__m128i*)(void*)d, x);
s += 4 * 3;
d += 4 * 4;
n -= 4;
}
while (n >= 1) {
uint8_t b0 = s[0];
uint8_t b1 = s[1];
uint8_t b2 = s[2];
d[0] = b2;
d[1] = b1;
d[2] = b0;
d[3] = 0xFF;
s += 1 * 3;
d += 1 * 4;
n -= 1;
}
return len;
}
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// โ€ผ WUFFS MULTI-FILE SECTION -x86_sse42
static uint64_t //
wuffs_base__pixel_swizzler__bgrw__rgb(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len3 = src_len / 3;
size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint8_t b0 = s[0];
uint8_t b1 = s[1];
uint8_t b2 = s[2];
d[0] = b2;
d[1] = b1;
d[2] = b0;
d[3] = 0xFF;
s += 1 * 3;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgrw__rgbx(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len4 = src_len / 4;
size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint8_t b0 = s[0];
uint8_t b1 = s[1];
uint8_t b2 = s[2];
d[0] = b2;
d[1] = b1;
d[2] = b0;
d[3] = 0xFF;
s += 1 * 4;
d += 1 * 4;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__bgrw_4x16le__bgr(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t src_len3 = src_len / 3;
size_t len = (dst_len8 < src_len3) ? dst_len8 : src_len3;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint8_t s0 = s[0];
uint8_t s1 = s[1];
uint8_t s2 = s[2];
d[0] = s0;
d[1] = s0;
d[2] = s1;
d[3] = s1;
d[4] = s2;
d[5] = s2;
d[6] = 0xFF;
d[7] = 0xFF;
s += 1 * 3;
d += 1 * 8;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgrw_4x16le__bgr_565(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t src_len2 = src_len / 2;
size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
wuffs_base__poke_u64le__no_bounds_check(
d + (0 * 8),
wuffs_base__color_u32__as__color_u64(
wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))));
s += 1 * 2;
d += 1 * 8;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgrw_4x16le__bgrx(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t src_len4 = src_len / 4;
size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint8_t s0 = s[0];
uint8_t s1 = s[1];
uint8_t s2 = s[2];
d[0] = s0;
d[1] = s0;
d[2] = s1;
d[3] = s1;
d[4] = s2;
d[5] = s2;
d[6] = 0xFF;
d[7] = 0xFF;
s += 1 * 4;
d += 1 * 8;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__bgrw_4x16le__rgb(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t src_len3 = src_len / 3;
size_t len = (dst_len8 < src_len3) ? dst_len8 : src_len3;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint8_t s0 = s[0];
uint8_t s1 = s[1];
uint8_t s2 = s[2];
d[0] = s2;
d[1] = s2;
d[2] = s1;
d[3] = s1;
d[4] = s0;
d[5] = s0;
d[6] = 0xFF;
d[7] = 0xFF;
s += 1 * 3;
d += 1 * 8;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len8 = src_len / 8;
size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__color_u64__as__color_u32__swap_u32_argb_abgr(
wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))));
s += 1 * 8;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len8 = src_len / 8;
size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint64_t d0 = wuffs_base__color_u32__as__color_u64(
wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)));
uint64_t s0 = wuffs_base__swap_u64_argb_abgr(
wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)));
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__color_u64__as__color_u32(
wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0)));
s += 1 * 8;
d += 1 * 4;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__rgbw__bgr_565(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len2 = src_len / 2;
size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4),
wuffs_base__swap_u32_argb_abgr(
wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(
wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))));
s += 1 * 2;
d += 1 * 4;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__xxx__index__src(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return 0;
}
size_t dst_len3 = dst_len / 3;
size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
const size_t loop_unroll_count = 4;
// The comparison in the while condition is ">", not ">=", because with
// ">=", the last 4-byte store could write past the end of the dst slice.
//
// Each 4-byte store writes one too many bytes, but a subsequent store
// will overwrite that with the correct byte. There is always another
// store, whether a 4-byte store in this loop or a 1-byte store in the
// next loop.
while (n > loop_unroll_count) {
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 3), wuffs_base__peek_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[0] * 4)));
wuffs_base__poke_u32le__no_bounds_check(
d + (1 * 3), wuffs_base__peek_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[1] * 4)));
wuffs_base__poke_u32le__no_bounds_check(
d + (2 * 3), wuffs_base__peek_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[2] * 4)));
wuffs_base__poke_u32le__no_bounds_check(
d + (3 * 3), wuffs_base__peek_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[3] * 4)));
s += loop_unroll_count * 1;
d += loop_unroll_count * 3;
n -= loop_unroll_count;
}
while (n >= 1) {
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
s += 1 * 1;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return 0;
}
size_t dst_len3 = dst_len / 3;
size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint32_t d0 =
wuffs_base__peek_u24le__no_bounds_check(d + (0 * 3)) | 0xFF000000;
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
wuffs_base__poke_u24le__no_bounds_check(
d + (0 * 3), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0));
s += 1 * 1;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return 0;
}
size_t dst_len3 = dst_len / 3;
size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
const size_t loop_unroll_count = 4;
while (n >= loop_unroll_count) {
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
if (s0) {
wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
}
uint32_t s1 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[1] * 4));
if (s1) {
wuffs_base__poke_u24le__no_bounds_check(d + (1 * 3), s1);
}
uint32_t s2 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[2] * 4));
if (s2) {
wuffs_base__poke_u24le__no_bounds_check(d + (2 * 3), s2);
}
uint32_t s3 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[3] * 4));
if (s3) {
wuffs_base__poke_u24le__no_bounds_check(d + (3 * 3), s3);
}
s += loop_unroll_count * 1;
d += loop_unroll_count * 3;
n -= loop_unroll_count;
}
while (n >= 1) {
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
if (s0) {
wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0);
}
s += 1 * 1;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__xxx__xxxx(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len4 = src_len / 4;
size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
wuffs_base__poke_u24le__no_bounds_check(
d + (0 * 3), wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)));
s += 1 * 4;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__xxx__y(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t len = (dst_len3 < src_len) ? dst_len3 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint8_t s0 = s[0];
d[0] = s0;
d[1] = s0;
d[2] = s0;
s += 1 * 1;
d += 1 * 3;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__xxx__y_16be(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len3 = dst_len / 3;
size_t src_len2 = src_len / 2;
size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
// TODO: unroll.
while (n >= 1) {
uint8_t s0 = s[0];
d[0] = s0;
d[1] = s0;
d[2] = s0;
s += 1 * 2;
d += 1 * 3;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__xxxx__index__src(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return 0;
}
size_t dst_len4 = dst_len / 4;
size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
const size_t loop_unroll_count = 4;
while (n >= loop_unroll_count) {
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__peek_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[0] * 4)));
wuffs_base__poke_u32le__no_bounds_check(
d + (1 * 4), wuffs_base__peek_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[1] * 4)));
wuffs_base__poke_u32le__no_bounds_check(
d + (2 * 4), wuffs_base__peek_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[2] * 4)));
wuffs_base__poke_u32le__no_bounds_check(
d + (3 * 4), wuffs_base__peek_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[3] * 4)));
s += loop_unroll_count * 1;
d += loop_unroll_count * 4;
n -= loop_unroll_count;
}
while (n >= 1) {
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4), wuffs_base__peek_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[0] * 4)));
s += 1 * 1;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return 0;
}
size_t dst_len4 = dst_len / 4;
size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
const size_t loop_unroll_count = 4;
while (n >= loop_unroll_count) {
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
if (s0) {
wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0);
}
uint32_t s1 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[1] * 4));
if (s1) {
wuffs_base__poke_u32le__no_bounds_check(d + (1 * 4), s1);
}
uint32_t s2 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[2] * 4));
if (s2) {
wuffs_base__poke_u32le__no_bounds_check(d + (2 * 4), s2);
}
uint32_t s3 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[3] * 4));
if (s3) {
wuffs_base__poke_u32le__no_bounds_check(d + (3 * 4), s3);
}
s += loop_unroll_count * 1;
d += loop_unroll_count * 4;
n -= loop_unroll_count;
}
while (n >= 1) {
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
if (s0) {
wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0);
}
s += 1 * 1;
d += 1 * 4;
n -= 1;
}
return len;
}
// โ€ผ WUFFS MULTI-FILE SECTION +x86_sse42
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
static uint64_t //
wuffs_base__pixel_swizzler__xxxx__y__sse42(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
__m128i shuffle = _mm_set_epi8(+0x03, +0x03, +0x03, +0x03, //
+0x02, +0x02, +0x02, +0x02, //
+0x01, +0x01, +0x01, +0x01, //
+0x00, +0x00, +0x00, +0x00);
__m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00, //
-0x01, +0x00, +0x00, +0x00, //
-0x01, +0x00, +0x00, +0x00, //
-0x01, +0x00, +0x00, +0x00);
while (n >= 4) {
__m128i x;
x = _mm_cvtsi32_si128((int)(wuffs_base__peek_u32le__no_bounds_check(s)));
x = _mm_shuffle_epi8(x, shuffle);
x = _mm_or_si128(x, or_ff);
_mm_storeu_si128((__m128i*)(void*)d, x);
s += 4 * 1;
d += 4 * 4;
n -= 4;
}
while (n >= 1) {
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
s += 1 * 1;
d += 1 * 4;
n -= 1;
}
return len;
}
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// โ€ผ WUFFS MULTI-FILE SECTION -x86_sse42
static uint64_t //
wuffs_base__pixel_swizzler__xxxx__y(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t len = (dst_len4 < src_len) ? dst_len4 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
s += 1 * 1;
d += 1 * 4;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__xxxx__y_16be(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len4 = dst_len / 4;
size_t src_len2 = src_len / 2;
size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
wuffs_base__poke_u32le__no_bounds_check(
d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0]));
s += 1 * 2;
d += 1 * 4;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__xxxxxxxx__index__src(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return 0;
}
size_t dst_len8 = dst_len / 8;
size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
wuffs_base__poke_u64le__no_bounds_check(
d + (0 * 8), wuffs_base__color_u32__as__color_u64(
wuffs_base__peek_u32le__no_bounds_check(
dst_palette_ptr + ((size_t)s[0] * 4))));
s += 1 * 1;
d += 1 * 8;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__xxxxxxxx__index_binary_alpha__src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
if (dst_palette_len !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return 0;
}
size_t dst_len8 = dst_len / 8;
size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr +
((size_t)s[0] * 4));
if (s0) {
wuffs_base__poke_u64le__no_bounds_check(
d + (0 * 8), wuffs_base__color_u32__as__color_u64(s0));
}
s += 1 * 1;
d += 1 * 8;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__xxxxxxxx__y(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t len = (dst_len8 < src_len) ? dst_len8 : src_len;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
wuffs_base__poke_u64le__no_bounds_check(
d + (0 * 8), 0xFFFF000000000000 | (0x010101010101 * (uint64_t)s[0]));
s += 1 * 1;
d += 1 * 8;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__xxxxxxxx__y_16be(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len8 = dst_len / 8;
size_t src_len2 = src_len / 2;
size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint64_t s0 =
((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(s + (0 * 2))));
wuffs_base__poke_u64le__no_bounds_check(
d + (0 * 8), 0xFFFF000000000000 | (0x000100010001 * s0));
s += 1 * 2;
d += 1 * 8;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__y__y_16be(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t src_len2 = src_len / 2;
size_t len = (dst_len < src_len2) ? dst_len : src_len2;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
d[0] = s[0];
s += 1 * 2;
d += 1 * 1;
n -= 1;
}
return len;
}
static uint64_t //
wuffs_base__pixel_swizzler__y_16le__y_16be(uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
const uint8_t* src_ptr,
size_t src_len) {
size_t dst_len2 = dst_len / 2;
size_t src_len2 = src_len / 2;
size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2;
uint8_t* d = dst_ptr;
const uint8_t* s = src_ptr;
size_t n = len;
while (n >= 1) {
uint8_t s0 = s[0];
uint8_t s1 = s[1];
d[0] = s1;
d[1] = s0;
s += 1 * 2;
d += 1 * 2;
n -= 1;
}
return len;
}
// --------
static uint64_t //
wuffs_base__pixel_swizzler__transparent_black_src(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
uint64_t num_pixels,
uint32_t dst_pixfmt_bytes_per_pixel) {
uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel;
if (n > num_pixels) {
n = num_pixels;
}
memset(dst_ptr, 0, ((size_t)(n * dst_pixfmt_bytes_per_pixel)));
return n;
}
static uint64_t //
wuffs_base__pixel_swizzler__transparent_black_src_over(
uint8_t* dst_ptr,
size_t dst_len,
uint8_t* dst_palette_ptr,
size_t dst_palette_len,
uint64_t num_pixels,
uint32_t dst_pixfmt_bytes_per_pixel) {
uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel;
if (n > num_pixels) {
n = num_pixels;
}
return n;
}
// --------
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__y(wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__Y:
return wuffs_base__pixel_swizzler__copy_1_1;
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
return wuffs_base__pixel_swizzler__bgr_565__y;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
case WUFFS_BASE__PIXEL_FORMAT__RGB:
return wuffs_base__pixel_swizzler__xxx__y;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
if (wuffs_base__cpu_arch__have_x86_sse42()) {
return wuffs_base__pixel_swizzler__xxxx__y__sse42;
}
#endif
return wuffs_base__pixel_swizzler__xxxx__y;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE:
return wuffs_base__pixel_swizzler__xxxxxxxx__y;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__y_16be(wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__Y:
return wuffs_base__pixel_swizzler__y__y_16be;
case WUFFS_BASE__PIXEL_FORMAT__Y_16LE:
return wuffs_base__pixel_swizzler__y_16le__y_16be;
case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
return wuffs_base__pixel_swizzler__copy_2_2;
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
return wuffs_base__pixel_swizzler__bgr_565__y_16be;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
case WUFFS_BASE__PIXEL_FORMAT__RGB:
return wuffs_base__pixel_swizzler__xxx__y_16be;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
return wuffs_base__pixel_swizzler__xxxx__y_16be;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE:
return wuffs_base__pixel_swizzler__xxxxxxxx__y_16be;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__indexed__bgra_nonpremul(
wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__copy_1_1;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
if (wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888(
dst_palette.ptr, dst_palette.len, src_palette.ptr,
src_palette.len, true) !=
(WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
return NULL;
}
return wuffs_base__pixel_swizzler__bgr_565__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return NULL;
}
return wuffs_base__pixel_swizzler__bgr_565__index_bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
if (wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(
dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
src_palette.len) !=
(WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
return NULL;
}
return wuffs_base__pixel_swizzler__xxx__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return NULL;
}
return wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__xxxx__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__xxxxxxxx__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
if (wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src(
dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
src_palette.len) !=
(WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
return NULL;
}
return wuffs_base__pixel_swizzler__xxxx__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return NULL;
}
return wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
// TODO.
break;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
src_palette.len) !=
(WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__xxxx__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
if (wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src(
dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
src_palette.len) !=
(WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
return NULL;
}
return wuffs_base__pixel_swizzler__xxxx__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
src_palette.len) !=
(WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
return NULL;
}
return wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
// TODO.
break;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__indexed__bgra_binary(
wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__copy_1_1;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
if (wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888(
dst_palette.ptr, dst_palette.len, src_palette.ptr,
src_palette.len, false) !=
(WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr_565__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr_565__index_binary_alpha__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__xxx__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__xxxx__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) !=
WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__xxxxxxxx__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__xxxxxxxx__index_binary_alpha__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
src_palette.len) !=
(WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__xxx__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx(
dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr,
src_palette.len) !=
(WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) {
return NULL;
}
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__xxxx__index__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over;
}
return NULL;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__bgr_565(
wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
return wuffs_base__pixel_swizzler__copy_2_2;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
return wuffs_base__pixel_swizzler__bgr__bgr_565;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
return wuffs_base__pixel_swizzler__bgrw__bgr_565;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
return wuffs_base__pixel_swizzler__bgrw_4x16le__bgr_565;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
return wuffs_base__pixel_swizzler__rgbw__bgr_565;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__bgr(wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
return wuffs_base__pixel_swizzler__bgr_565__bgr;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
return wuffs_base__pixel_swizzler__copy_3_3;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
return wuffs_base__pixel_swizzler__bgrw__bgr;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE:
return wuffs_base__pixel_swizzler__bgrw_4x16le__bgr;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
return wuffs_base__pixel_swizzler__swap_rgb_bgr;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
if (wuffs_base__cpu_arch__have_x86_sse42()) {
return wuffs_base__pixel_swizzler__bgrw__rgb__sse42;
}
#endif
return wuffs_base__pixel_swizzler__bgrw__rgb;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__bgra_nonpremul(
wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__copy_4_4;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
// TODO.
break;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
// TODO.
break;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
if (wuffs_base__cpu_arch__have_x86_sse42()) {
return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42;
}
#endif
return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
// TODO.
break;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__bgra_nonpremul_4x16le(
wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__copy_8_8;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul_4x16le__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
// TODO.
break;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
// TODO.
break;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src_over;
}
break;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
// TODO.
break;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__bgra_premul(
wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr__bgra_premul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr__bgra_premul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__copy_4_4;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
if (wuffs_base__cpu_arch__have_x86_sse42()) {
return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42;
}
#endif
return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over;
}
return NULL;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__bgrx(wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
return wuffs_base__pixel_swizzler__bgr_565__bgrx;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
return wuffs_base__pixel_swizzler__xxx__xxxx;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
return wuffs_base__pixel_swizzler__bgrw__bgrx;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
return wuffs_base__pixel_swizzler__bgrw_4x16le__bgrx;
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
return wuffs_base__pixel_swizzler__copy_4_4;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
// TODO.
break;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
return wuffs_base__pixel_swizzler__bgrw__rgbx;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__rgb(wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
return wuffs_base__pixel_swizzler__bgr_565__rgb;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
return wuffs_base__pixel_swizzler__swap_rgb_bgr;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
if (wuffs_base__cpu_arch__have_x86_sse42()) {
return wuffs_base__pixel_swizzler__bgrw__rgb__sse42;
}
#endif
return wuffs_base__pixel_swizzler__bgrw__rgb;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
return wuffs_base__pixel_swizzler__bgrw_4x16le__rgb;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
return wuffs_base__pixel_swizzler__copy_3_3;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
return wuffs_base__pixel_swizzler__bgrw__bgr;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__rgba_nonpremul(
wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
if (wuffs_base__cpu_arch__have_x86_sse42()) {
return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42;
}
#endif
return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
// TODO.
break;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
// TODO.
break;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__copy_4_4;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY:
case WUFFS_BASE__PIXEL_FORMAT__RGBX:
// TODO.
break;
}
return NULL;
}
static wuffs_base__pixel_swizzler__func //
wuffs_base__pixel_swizzler__prepare__rgba_premul(
wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
switch (dst_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgr__rgba_premul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgr__rgba_premul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
if (wuffs_base__cpu_arch__have_x86_sse42()) {
return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42;
}
#endif
return wuffs_base__pixel_swizzler__swap_rgbx_bgrx;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over;
}
return NULL;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
return wuffs_base__pixel_swizzler__copy_4_4;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
return wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over;
}
return NULL;
}
return NULL;
}
// --------
WUFFS_BASE__MAYBE_STATIC wuffs_base__status //
wuffs_base__pixel_swizzler__prepare(wuffs_base__pixel_swizzler* p,
wuffs_base__pixel_format dst_pixfmt,
wuffs_base__slice_u8 dst_palette,
wuffs_base__pixel_format src_pixfmt,
wuffs_base__slice_u8 src_palette,
wuffs_base__pixel_blend blend) {
if (!p) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
p->private_impl.func = NULL;
p->private_impl.transparent_black_func = NULL;
p->private_impl.dst_pixfmt_bytes_per_pixel = 0;
p->private_impl.src_pixfmt_bytes_per_pixel = 0;
wuffs_base__pixel_swizzler__func func = NULL;
wuffs_base__pixel_swizzler__transparent_black_func transparent_black_func =
NULL;
uint32_t dst_pixfmt_bits_per_pixel =
wuffs_base__pixel_format__bits_per_pixel(&dst_pixfmt);
if ((dst_pixfmt_bits_per_pixel == 0) ||
((dst_pixfmt_bits_per_pixel & 7) != 0)) {
return wuffs_base__make_status(
wuffs_base__error__unsupported_pixel_swizzler_option);
}
uint32_t src_pixfmt_bits_per_pixel =
wuffs_base__pixel_format__bits_per_pixel(&src_pixfmt);
if ((src_pixfmt_bits_per_pixel == 0) ||
((src_pixfmt_bits_per_pixel & 7) != 0)) {
return wuffs_base__make_status(
wuffs_base__error__unsupported_pixel_swizzler_option);
}
// TODO: support many more formats.
switch (blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
transparent_black_func =
wuffs_base__pixel_swizzler__transparent_black_src;
break;
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
transparent_black_func =
wuffs_base__pixel_swizzler__transparent_black_src_over;
break;
}
switch (src_pixfmt.repr) {
case WUFFS_BASE__PIXEL_FORMAT__Y:
func = wuffs_base__pixel_swizzler__prepare__y(p, dst_pixfmt, dst_palette,
src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__Y_16BE:
func = wuffs_base__pixel_swizzler__prepare__y_16be(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL:
func = wuffs_base__pixel_swizzler__prepare__indexed__bgra_nonpremul(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY:
func = wuffs_base__pixel_swizzler__prepare__indexed__bgra_binary(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
func = wuffs_base__pixel_swizzler__prepare__bgr_565(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__BGR:
func = wuffs_base__pixel_swizzler__prepare__bgr(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
func = wuffs_base__pixel_swizzler__prepare__bgra_nonpremul(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
func = wuffs_base__pixel_swizzler__prepare__bgra_nonpremul_4x16le(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
func = wuffs_base__pixel_swizzler__prepare__bgra_premul(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__BGRX:
func = wuffs_base__pixel_swizzler__prepare__bgrx(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__RGB:
func = wuffs_base__pixel_swizzler__prepare__rgb(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
func = wuffs_base__pixel_swizzler__prepare__rgba_nonpremul(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
func = wuffs_base__pixel_swizzler__prepare__rgba_premul(
p, dst_pixfmt, dst_palette, src_palette, blend);
break;
}
p->private_impl.func = func;
p->private_impl.transparent_black_func = transparent_black_func;
p->private_impl.dst_pixfmt_bytes_per_pixel = dst_pixfmt_bits_per_pixel / 8;
p->private_impl.src_pixfmt_bytes_per_pixel = src_pixfmt_bits_per_pixel / 8;
return wuffs_base__make_status(
func ? NULL : wuffs_base__error__unsupported_pixel_swizzler_option);
}
WUFFS_BASE__MAYBE_STATIC uint64_t //
wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
const wuffs_base__pixel_swizzler* p,
uint32_t up_to_num_pixels,
wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 dst_palette,
const uint8_t** ptr_iop_r,
const uint8_t* io2_r) {
if (p && p->private_impl.func) {
const uint8_t* iop_r = *ptr_iop_r;
uint64_t src_len = wuffs_base__u64__min(
((uint64_t)up_to_num_pixels) *
((uint64_t)p->private_impl.src_pixfmt_bytes_per_pixel),
((uint64_t)(io2_r - iop_r)));
uint64_t n =
(*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
dst_palette.len, iop_r, (size_t)src_len);
*ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel;
return n;
}
return 0;
}
WUFFS_BASE__MAYBE_STATIC uint64_t //
wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
const wuffs_base__pixel_swizzler* p,
wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 dst_palette,
const uint8_t** ptr_iop_r,
const uint8_t* io2_r) {
if (p && p->private_impl.func) {
const uint8_t* iop_r = *ptr_iop_r;
uint64_t src_len = ((uint64_t)(io2_r - iop_r));
uint64_t n =
(*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
dst_palette.len, iop_r, (size_t)src_len);
*ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel;
return n;
}
return 0;
}
WUFFS_BASE__MAYBE_STATIC uint64_t //
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(
const wuffs_base__pixel_swizzler* p,
wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 dst_palette,
wuffs_base__slice_u8 src) {
if (p && p->private_impl.func) {
return (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr,
dst_palette.len, src.ptr, src.len);
}
return 0;
}
WUFFS_BASE__MAYBE_STATIC uint64_t //
wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(
const wuffs_base__pixel_swizzler* p,
wuffs_base__slice_u8 dst,
wuffs_base__slice_u8 dst_palette,
uint64_t num_pixels) {
if (p && p->private_impl.transparent_black_func) {
return (*p->private_impl.transparent_black_func)(
dst.ptr, dst.len, dst_palette.ptr, dst_palette.len, num_pixels,
p->private_impl.dst_pixfmt_bytes_per_pixel);
}
return 0;
}
#endif // !defined(WUFFS_CONFIG__MODULES) ||
// defined(WUFFS_CONFIG__MODULE__BASE) ||
// defined(WUFFS_CONFIG__MODULE__BASE__PIXCONV)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \
defined(WUFFS_CONFIG__MODULE__BASE__UTF8)
// ---------------- Unicode and UTF-8
WUFFS_BASE__MAYBE_STATIC size_t //
wuffs_base__utf_8__encode(wuffs_base__slice_u8 dst, uint32_t code_point) {
if (code_point <= 0x7F) {
if (dst.len >= 1) {
dst.ptr[0] = (uint8_t)(code_point);
return 1;
}
} else if (code_point <= 0x07FF) {
if (dst.len >= 2) {
dst.ptr[0] = (uint8_t)(0xC0 | ((code_point >> 6)));
dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F));
return 2;
}
} else if (code_point <= 0xFFFF) {
if ((dst.len >= 3) && ((code_point < 0xD800) || (0xDFFF < code_point))) {
dst.ptr[0] = (uint8_t)(0xE0 | ((code_point >> 12)));
dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 6) & 0x3F));
dst.ptr[2] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F));
return 3;
}
} else if (code_point <= 0x10FFFF) {
if (dst.len >= 4) {
dst.ptr[0] = (uint8_t)(0xF0 | ((code_point >> 18)));
dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 12) & 0x3F));
dst.ptr[2] = (uint8_t)(0x80 | ((code_point >> 6) & 0x3F));
dst.ptr[3] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F));
return 4;
}
}
return 0;
}
// wuffs_base__utf_8__byte_length_minus_1 is the byte length (minus 1) of a
// UTF-8 encoded code point, based on the encoding's initial byte.
// - 0x00 is 1-byte UTF-8 (ASCII).
// - 0x01 is the start of 2-byte UTF-8.
// - 0x02 is the start of 3-byte UTF-8.
// - 0x03 is the start of 4-byte UTF-8.
// - 0x40 is a UTF-8 tail byte.
// - 0x80 is invalid UTF-8.
//
// RFC 3629 (UTF-8) gives this grammar for valid UTF-8:
// UTF8-1 = %x00-7F
// UTF8-2 = %xC2-DF UTF8-tail
// UTF8-3 = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) /
// %xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail )
// UTF8-4 = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) /
// %xF4 %x80-8F 2( UTF8-tail )
// UTF8-tail = %x80-BF
static const uint8_t wuffs_base__utf_8__byte_length_minus_1[256] = {
// 0 1 2 3 4 5 6 7
// 8 9 A B C D E F
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x00 ..= 0x07.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x08 ..= 0x0F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x10 ..= 0x17.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x18 ..= 0x1F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x20 ..= 0x27.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x28 ..= 0x2F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x30 ..= 0x37.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x38 ..= 0x3F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x40 ..= 0x47.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x48 ..= 0x4F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x50 ..= 0x57.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x58 ..= 0x5F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x60 ..= 0x67.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x68 ..= 0x6F.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x70 ..= 0x77.
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x78 ..= 0x7F.
0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0x80 ..= 0x87.
0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0x88 ..= 0x8F.
0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0x90 ..= 0x97.
0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0x98 ..= 0x9F.
0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0xA0 ..= 0xA7.
0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0xA8 ..= 0xAF.
0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0xB0 ..= 0xB7.
0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0xB8 ..= 0xBF.
0x80, 0x80, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, // 0xC0 ..= 0xC7.
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, // 0xC8 ..= 0xCF.
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, // 0xD0 ..= 0xD7.
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, // 0xD8 ..= 0xDF.
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, // 0xE0 ..= 0xE7.
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, // 0xE8 ..= 0xEF.
0x03, 0x03, 0x03, 0x03, 0x03, 0x80, 0x80, 0x80, // 0xF0 ..= 0xF7.
0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xF8 ..= 0xFF.
// 0 1 2 3 4 5 6 7
// 8 9 A B C D E F
};
WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output //
wuffs_base__utf_8__next(const uint8_t* s_ptr, size_t s_len) {
if (s_len == 0) {
return wuffs_base__make_utf_8__next__output(0, 0);
}
uint32_t c = s_ptr[0];
switch (wuffs_base__utf_8__byte_length_minus_1[c & 0xFF]) {
case 0:
return wuffs_base__make_utf_8__next__output(c, 1);
case 1:
if (s_len < 2) {
break;
}
c = wuffs_base__peek_u16le__no_bounds_check(s_ptr);
if ((c & 0xC000) != 0x8000) {
break;
}
c = (0x0007C0 & (c << 6)) | (0x00003F & (c >> 8));
return wuffs_base__make_utf_8__next__output(c, 2);
case 2:
if (s_len < 3) {
break;
}
c = wuffs_base__peek_u24le__no_bounds_check(s_ptr);
if ((c & 0xC0C000) != 0x808000) {
break;
}
c = (0x00F000 & (c << 12)) | (0x000FC0 & (c >> 2)) |
(0x00003F & (c >> 16));
if ((c <= 0x07FF) || ((0xD800 <= c) && (c <= 0xDFFF))) {
break;
}
return wuffs_base__make_utf_8__next__output(c, 3);
case 3:
if (s_len < 4) {
break;
}
c = wuffs_base__peek_u32le__no_bounds_check(s_ptr);
if ((c & 0xC0C0C000) != 0x80808000) {
break;
}
c = (0x1C0000 & (c << 18)) | (0x03F000 & (c << 4)) |
(0x000FC0 & (c >> 10)) | (0x00003F & (c >> 24));
if ((c <= 0xFFFF) || (0x110000 <= c)) {
break;
}
return wuffs_base__make_utf_8__next__output(c, 4);
}
return wuffs_base__make_utf_8__next__output(
WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, 1);
}
WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output //
wuffs_base__utf_8__next_from_end(const uint8_t* s_ptr, size_t s_len) {
if (s_len == 0) {
return wuffs_base__make_utf_8__next__output(0, 0);
}
const uint8_t* ptr = &s_ptr[s_len - 1];
if (*ptr < 0x80) {
return wuffs_base__make_utf_8__next__output(*ptr, 1);
} else if (*ptr < 0xC0) {
const uint8_t* too_far = &s_ptr[(s_len > 4) ? (s_len - 4) : 0];
uint32_t n = 1;
while (ptr != too_far) {
ptr--;
n++;
if (*ptr < 0x80) {
break;
} else if (*ptr < 0xC0) {
continue;
}
wuffs_base__utf_8__next__output o = wuffs_base__utf_8__next(ptr, n);
if (o.byte_length != n) {
break;
}
return o;
}
}
return wuffs_base__make_utf_8__next__output(
WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, 1);
}
WUFFS_BASE__MAYBE_STATIC size_t //
wuffs_base__utf_8__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len) {
// TODO: possibly optimize the all-ASCII case (4 or 8 bytes at a time).
//
// TODO: possibly optimize this by manually inlining the
// wuffs_base__utf_8__next calls.
size_t original_len = s_len;
while (s_len > 0) {
wuffs_base__utf_8__next__output o = wuffs_base__utf_8__next(s_ptr, s_len);
if ((o.code_point > 0x7F) && (o.byte_length == 1)) {
break;
}
s_ptr += o.byte_length;
s_len -= o.byte_length;
}
return original_len - s_len;
}
WUFFS_BASE__MAYBE_STATIC size_t //
wuffs_base__ascii__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len) {
// TODO: possibly optimize this by checking 4 or 8 bytes at a time.
const uint8_t* original_ptr = s_ptr;
const uint8_t* p = s_ptr;
const uint8_t* q = s_ptr + s_len;
for (; (p != q) && ((*p & 0x80) == 0); p++) {
}
return (size_t)(p - original_ptr);
}
#endif // !defined(WUFFS_CONFIG__MODULES) ||
// defined(WUFFS_CONFIG__MODULE__BASE) ||
// defined(WUFFS_CONFIG__MODULE__BASE__UTF8)
#ifdef __cplusplus
} // extern "C"
#endif
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32)
// ---------------- Status Codes Implementations
// ---------------- Private Consts
// ---------------- Private Initializer Prototypes
// ---------------- Private Function Prototypes
static wuffs_base__empty_struct
wuffs_adler32__hasher__up(
wuffs_adler32__hasher* self,
wuffs_base__slice_u8 a_x);
static wuffs_base__empty_struct
wuffs_adler32__hasher__up__choosy_default(
wuffs_adler32__hasher* self,
wuffs_base__slice_u8 a_x);
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
static wuffs_base__empty_struct
wuffs_adler32__hasher__up_arm_neon(
wuffs_adler32__hasher* self,
wuffs_base__slice_u8 a_x);
#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
static wuffs_base__empty_struct
wuffs_adler32__hasher__up_x86_sse42(
wuffs_adler32__hasher* self,
wuffs_base__slice_u8 a_x);
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// ---------------- VTables
const wuffs_base__hasher_u32__func_ptrs
wuffs_adler32__hasher__func_ptrs_for__wuffs_base__hasher_u32 = {
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_adler32__hasher__set_quirk_enabled),
(uint32_t(*)(void*,
wuffs_base__slice_u8))(&wuffs_adler32__hasher__update_u32),
};
// ---------------- Initializer Implementations
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_adler32__hasher__initialize(
wuffs_adler32__hasher* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options){
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (sizeof(*self) != sizeof_star_self) {
return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
}
if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
(((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
}
if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
// The whole point of this if-check is to detect an uninitialized *self.
// We disable the warning on GCC. Clang-5.0 does not have this warning.
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
if (self->private_impl.magic != 0) {
return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
}
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
} else {
if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
memset(self, 0, sizeof(*self));
options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
} else {
memset(&(self->private_impl), 0, sizeof(self->private_impl));
}
}
self->private_impl.choosy_up = &wuffs_adler32__hasher__up__choosy_default;
self->private_impl.magic = WUFFS_BASE__MAGIC;
self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name =
wuffs_base__hasher_u32__vtable_name;
self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers =
(const void*)(&wuffs_adler32__hasher__func_ptrs_for__wuffs_base__hasher_u32);
return wuffs_base__make_status(NULL);
}
wuffs_adler32__hasher*
wuffs_adler32__hasher__alloc() {
wuffs_adler32__hasher* x =
(wuffs_adler32__hasher*)(calloc(sizeof(wuffs_adler32__hasher), 1));
if (!x) {
return NULL;
}
if (wuffs_adler32__hasher__initialize(
x, sizeof(wuffs_adler32__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
free(x);
return NULL;
}
return x;
}
size_t
sizeof__wuffs_adler32__hasher() {
return sizeof(wuffs_adler32__hasher);
}
// ---------------- Function Implementations
// -------- func adler32.hasher.set_quirk_enabled
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_adler32__hasher__set_quirk_enabled(
wuffs_adler32__hasher* self,
uint32_t a_quirk,
bool a_enabled) {
return wuffs_base__make_empty_struct();
}
// -------- func adler32.hasher.update_u32
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_adler32__hasher__update_u32(
wuffs_adler32__hasher* self,
wuffs_base__slice_u8 a_x) {
if (!self) {
return 0;
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return 0;
}
if ( ! self->private_impl.f_started) {
self->private_impl.f_started = true;
self->private_impl.f_state = 1;
self->private_impl.choosy_up = (
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_adler32__hasher__up_arm_neon :
#endif
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_adler32__hasher__up_x86_sse42 :
#endif
self->private_impl.choosy_up);
}
wuffs_adler32__hasher__up(self, a_x);
return self->private_impl.f_state;
}
// -------- func adler32.hasher.up
static wuffs_base__empty_struct
wuffs_adler32__hasher__up(
wuffs_adler32__hasher* self,
wuffs_base__slice_u8 a_x) {
return (*self->private_impl.choosy_up)(self, a_x);
}
static wuffs_base__empty_struct
wuffs_adler32__hasher__up__choosy_default(
wuffs_adler32__hasher* self,
wuffs_base__slice_u8 a_x) {
uint32_t v_s1 = 0;
uint32_t v_s2 = 0;
wuffs_base__slice_u8 v_remaining = {0};
wuffs_base__slice_u8 v_p = {0};
v_s1 = ((self->private_impl.f_state) & 0xFFFF);
v_s2 = ((self->private_impl.f_state) >> (32 - (16)));
while (((uint64_t)(a_x.len)) > 0) {
v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0);
if (((uint64_t)(a_x.len)) > 5552) {
v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5552);
a_x = wuffs_base__slice_u8__subslice_j(a_x, 5552);
}
{
wuffs_base__slice_u8 i_slice_p = a_x;
v_p.ptr = i_slice_p.ptr;
v_p.len = 1;
uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8);
while (v_p.ptr < i_end0_p) {
v_s1 += ((uint32_t)(v_p.ptr[0]));
v_s2 += v_s1;
v_p.ptr += 1;
v_s1 += ((uint32_t)(v_p.ptr[0]));
v_s2 += v_s1;
v_p.ptr += 1;
v_s1 += ((uint32_t)(v_p.ptr[0]));
v_s2 += v_s1;
v_p.ptr += 1;
v_s1 += ((uint32_t)(v_p.ptr[0]));
v_s2 += v_s1;
v_p.ptr += 1;
v_s1 += ((uint32_t)(v_p.ptr[0]));
v_s2 += v_s1;
v_p.ptr += 1;
v_s1 += ((uint32_t)(v_p.ptr[0]));
v_s2 += v_s1;
v_p.ptr += 1;
v_s1 += ((uint32_t)(v_p.ptr[0]));
v_s2 += v_s1;
v_p.ptr += 1;
v_s1 += ((uint32_t)(v_p.ptr[0]));
v_s2 += v_s1;
v_p.ptr += 1;
}
v_p.len = 1;
uint8_t* i_end1_p = i_slice_p.ptr + i_slice_p.len;
while (v_p.ptr < i_end1_p) {
v_s1 += ((uint32_t)(v_p.ptr[0]));
v_s2 += v_s1;
v_p.ptr += 1;
}
v_p.len = 0;
}
v_s1 %= 65521;
v_s2 %= 65521;
a_x = v_remaining;
}
self->private_impl.f_state = (((v_s2 & 65535) << 16) | (v_s1 & 65535));
return wuffs_base__make_empty_struct();
}
// โ€ผ WUFFS MULTI-FILE SECTION +arm_neon
// -------- func adler32.hasher.up_arm_neon
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
static wuffs_base__empty_struct
wuffs_adler32__hasher__up_arm_neon(
wuffs_adler32__hasher* self,
wuffs_base__slice_u8 a_x) {
uint32_t v_s1 = 0;
uint32_t v_s2 = 0;
wuffs_base__slice_u8 v_remaining = {0};
wuffs_base__slice_u8 v_p = {0};
uint8x16_t v_p__left = {0};
uint8x16_t v_p_right = {0};
uint32x4_t v_v1 = {0};
uint32x4_t v_v2 = {0};
uint16x8_t v_col0 = {0};
uint16x8_t v_col1 = {0};
uint16x8_t v_col2 = {0};
uint16x8_t v_col3 = {0};
uint32x2_t v_sum1 = {0};
uint32x2_t v_sum2 = {0};
uint32x2_t v_sum12 = {0};
uint32_t v_num_iterate_bytes = 0;
uint64_t v_tail_index = 0;
v_s1 = ((self->private_impl.f_state) & 0xFFFF);
v_s2 = ((self->private_impl.f_state) >> (32 - (16)));
while ((((uint64_t)(a_x.len)) > 0) && ((15 & ((uint32_t)(0xFFF & (uintptr_t)(a_x.ptr)))) != 0)) {
v_s1 += ((uint32_t)(a_x.ptr[0]));
v_s2 += v_s1;
a_x = wuffs_base__slice_u8__subslice_i(a_x, 1);
}
v_s1 %= 65521;
v_s2 %= 65521;
while (((uint64_t)(a_x.len)) > 0) {
v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0);
if (((uint64_t)(a_x.len)) > 5536) {
v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5536);
a_x = wuffs_base__slice_u8__subslice_j(a_x, 5536);
}
v_num_iterate_bytes = ((uint32_t)((((uint64_t)(a_x.len)) & 4294967264)));
v_s2 += ((uint32_t)(v_s1 * v_num_iterate_bytes));
v_v1 = vdupq_n_u32(0);
v_v2 = vdupq_n_u32(0);
v_col0 = vdupq_n_u16(0);
v_col1 = vdupq_n_u16(0);
v_col2 = vdupq_n_u16(0);
v_col3 = vdupq_n_u16(0);
{
wuffs_base__slice_u8 i_slice_p = a_x;
v_p.ptr = i_slice_p.ptr;
v_p.len = 32;
uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32);
while (v_p.ptr < i_end0_p) {
v_p__left = vld1q_u8(v_p.ptr);
v_p_right = vld1q_u8(v_p.ptr + 16);
v_v2 = vaddq_u32(v_v2, v_v1);
v_v1 = vpadalq_u16(v_v1, vpadalq_u8(vpaddlq_u8(v_p__left), v_p_right));
v_col0 = vaddw_u8(v_col0, vget_low_u8(v_p__left));
v_col1 = vaddw_u8(v_col1, vget_high_u8(v_p__left));
v_col2 = vaddw_u8(v_col2, vget_low_u8(v_p_right));
v_col3 = vaddw_u8(v_col3, vget_high_u8(v_p_right));
v_p.ptr += 32;
}
v_p.len = 0;
}
v_v2 = vshlq_n_u32(v_v2, 5);
v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col0), ((uint16x4_t){32, 31, 30, 29}));
v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col0), ((uint16x4_t){28, 27, 26, 25}));
v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col1), ((uint16x4_t){24, 23, 22, 21}));
v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col1), ((uint16x4_t){20, 19, 18, 17}));
v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col2), ((uint16x4_t){16, 15, 14, 13}));
v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col2), ((uint16x4_t){12, 11, 10, 9}));
v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col3), ((uint16x4_t){8, 7, 6, 5}));
v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col3), ((uint16x4_t){4, 3, 2, 1}));
v_sum1 = vpadd_u32(vget_low_u32(v_v1), vget_high_u32(v_v1));
v_sum2 = vpadd_u32(vget_low_u32(v_v2), vget_high_u32(v_v2));
v_sum12 = vpadd_u32(v_sum1, v_sum2);
v_s1 += vget_lane_u32(v_sum12, 0);
v_s2 += vget_lane_u32(v_sum12, 1);
v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551584u);
if (v_tail_index < ((uint64_t)(a_x.len))) {
{
wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
v_p.ptr = i_slice_p.ptr;
v_p.len = 1;
uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
while (v_p.ptr < i_end0_p) {
v_s1 += ((uint32_t)(v_p.ptr[0]));
v_s2 += v_s1;
v_p.ptr += 1;
}
v_p.len = 0;
}
}
v_s1 %= 65521;
v_s2 %= 65521;
a_x = v_remaining;
}
self->private_impl.f_state = (((v_s2 & 65535) << 16) | (v_s1 & 65535));
return wuffs_base__make_empty_struct();
}
#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
// โ€ผ WUFFS MULTI-FILE SECTION -arm_neon
// โ€ผ WUFFS MULTI-FILE SECTION +x86_sse42
// -------- func adler32.hasher.up_x86_sse42
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
static wuffs_base__empty_struct
wuffs_adler32__hasher__up_x86_sse42(
wuffs_adler32__hasher* self,
wuffs_base__slice_u8 a_x) {
uint32_t v_s1 = 0;
uint32_t v_s2 = 0;
wuffs_base__slice_u8 v_remaining = {0};
wuffs_base__slice_u8 v_p = {0};
__m128i v_zeroes = {0};
__m128i v_ones = {0};
__m128i v_weights__left = {0};
__m128i v_weights_right = {0};
__m128i v_q__left = {0};
__m128i v_q_right = {0};
__m128i v_v1 = {0};
__m128i v_v2 = {0};
__m128i v_v2j = {0};
__m128i v_v2k = {0};
uint32_t v_num_iterate_bytes = 0;
uint64_t v_tail_index = 0;
v_zeroes = _mm_set1_epi16((int16_t)(0));
v_ones = _mm_set1_epi16((int16_t)(1));
v_weights__left = _mm_set_epi8((int8_t)(17), (int8_t)(18), (int8_t)(19), (int8_t)(20), (int8_t)(21), (int8_t)(22), (int8_t)(23), (int8_t)(24), (int8_t)(25), (int8_t)(26), (int8_t)(27), (int8_t)(28), (int8_t)(29), (int8_t)(30), (int8_t)(31), (int8_t)(32));
v_weights_right = _mm_set_epi8((int8_t)(1), (int8_t)(2), (int8_t)(3), (int8_t)(4), (int8_t)(5), (int8_t)(6), (int8_t)(7), (int8_t)(8), (int8_t)(9), (int8_t)(10), (int8_t)(11), (int8_t)(12), (int8_t)(13), (int8_t)(14), (int8_t)(15), (int8_t)(16));
v_s1 = ((self->private_impl.f_state) & 0xFFFF);
v_s2 = ((self->private_impl.f_state) >> (32 - (16)));
while (((uint64_t)(a_x.len)) > 0) {
v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0);
if (((uint64_t)(a_x.len)) > 5536) {
v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5536);
a_x = wuffs_base__slice_u8__subslice_j(a_x, 5536);
}
v_num_iterate_bytes = ((uint32_t)((((uint64_t)(a_x.len)) & 4294967264)));
v_s2 += ((uint32_t)(v_s1 * v_num_iterate_bytes));
v_v1 = _mm_setzero_si128();
v_v2j = _mm_setzero_si128();
v_v2k = _mm_setzero_si128();
{
wuffs_base__slice_u8 i_slice_p = a_x;
v_p.ptr = i_slice_p.ptr;
v_p.len = 32;
uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32);
while (v_p.ptr < i_end0_p) {
v_q__left = _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr));
v_q_right = _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16));
v_v2j = _mm_add_epi32(v_v2j, v_v1);
v_v1 = _mm_add_epi32(v_v1, _mm_sad_epu8(v_q__left, v_zeroes));
v_v1 = _mm_add_epi32(v_v1, _mm_sad_epu8(v_q_right, v_zeroes));
v_v2k = _mm_add_epi32(v_v2k, _mm_madd_epi16(v_ones, _mm_maddubs_epi16(v_q__left, v_weights__left)));
v_v2k = _mm_add_epi32(v_v2k, _mm_madd_epi16(v_ones, _mm_maddubs_epi16(v_q_right, v_weights_right)));
v_p.ptr += 32;
}
v_p.len = 0;
}
v_v1 = _mm_add_epi32(v_v1, _mm_shuffle_epi32(v_v1, (int32_t)(177)));
v_v1 = _mm_add_epi32(v_v1, _mm_shuffle_epi32(v_v1, (int32_t)(78)));
v_s1 += ((uint32_t)(_mm_cvtsi128_si32(v_v1)));
v_v2 = _mm_add_epi32(v_v2k, _mm_slli_epi32(v_v2j, (int32_t)(5)));
v_v2 = _mm_add_epi32(v_v2, _mm_shuffle_epi32(v_v2, (int32_t)(177)));
v_v2 = _mm_add_epi32(v_v2, _mm_shuffle_epi32(v_v2, (int32_t)(78)));
v_s2 += ((uint32_t)(_mm_cvtsi128_si32(v_v2)));
v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551584u);
if (v_tail_index < ((uint64_t)(a_x.len))) {
{
wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
v_p.ptr = i_slice_p.ptr;
v_p.len = 1;
uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
while (v_p.ptr < i_end0_p) {
v_s1 += ((uint32_t)(v_p.ptr[0]));
v_s2 += v_s1;
v_p.ptr += 1;
}
v_p.len = 0;
}
}
v_s1 %= 65521;
v_s2 %= 65521;
a_x = v_remaining;
}
self->private_impl.f_state = (((v_s2 & 65535) << 16) | (v_s1 & 65535));
return wuffs_base__make_empty_struct();
}
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// โ€ผ WUFFS MULTI-FILE SECTION -x86_sse42
#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP)
// ---------------- Status Codes Implementations
const char wuffs_bmp__error__bad_header[] = "#bmp: bad header";
const char wuffs_bmp__error__bad_rle_compression[] = "#bmp: bad RLE compression";
const char wuffs_bmp__error__unsupported_bmp_file[] = "#bmp: unsupported BMP file";
const char wuffs_bmp__note__internal_note_short_read[] = "@bmp: internal note: short read";
// ---------------- Private Consts
#define WUFFS_BMP__COMPRESSION_NONE 0
#define WUFFS_BMP__COMPRESSION_RLE8 1
#define WUFFS_BMP__COMPRESSION_RLE4 2
#define WUFFS_BMP__COMPRESSION_BITFIELDS 3
#define WUFFS_BMP__COMPRESSION_JPEG 4
#define WUFFS_BMP__COMPRESSION_PNG 5
#define WUFFS_BMP__COMPRESSION_ALPHABITFIELDS 6
#define WUFFS_BMP__COMPRESSION_LOW_BIT_DEPTH 256
#define WUFFS_BMP__RLE_STATE_NEUTRAL 0
#define WUFFS_BMP__RLE_STATE_RUN 1
#define WUFFS_BMP__RLE_STATE_ESCAPE 2
#define WUFFS_BMP__RLE_STATE_LITERAL 3
#define WUFFS_BMP__RLE_STATE_DELTA_X 4
#define WUFFS_BMP__RLE_STATE_DELTA_Y 5
// ---------------- Private Initializer Prototypes
// ---------------- Private Function Prototypes
static wuffs_base__status
wuffs_bmp__decoder__swizzle_none(
wuffs_bmp__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_bmp__decoder__swizzle_rle(
wuffs_bmp__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_bmp__decoder__swizzle_bitfields(
wuffs_bmp__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_bmp__decoder__swizzle_low_bit_depth(
wuffs_bmp__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_bmp__decoder__read_palette(
wuffs_bmp__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_bmp__decoder__process_masks(
wuffs_bmp__decoder* self);
// ---------------- VTables
const wuffs_base__image_decoder__func_ptrs
wuffs_bmp__decoder__func_ptrs_for__wuffs_base__image_decoder = {
(wuffs_base__status(*)(void*,
wuffs_base__pixel_buffer*,
wuffs_base__io_buffer*,
wuffs_base__pixel_blend,
wuffs_base__slice_u8,
wuffs_base__decode_frame_options*))(&wuffs_bmp__decoder__decode_frame),
(wuffs_base__status(*)(void*,
wuffs_base__frame_config*,
wuffs_base__io_buffer*))(&wuffs_bmp__decoder__decode_frame_config),
(wuffs_base__status(*)(void*,
wuffs_base__image_config*,
wuffs_base__io_buffer*))(&wuffs_bmp__decoder__decode_image_config),
(wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_bmp__decoder__frame_dirty_rect),
(uint32_t(*)(const void*))(&wuffs_bmp__decoder__num_animation_loops),
(uint64_t(*)(const void*))(&wuffs_bmp__decoder__num_decoded_frame_configs),
(uint64_t(*)(const void*))(&wuffs_bmp__decoder__num_decoded_frames),
(wuffs_base__status(*)(void*,
uint64_t,
uint64_t))(&wuffs_bmp__decoder__restart_frame),
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_bmp__decoder__set_quirk_enabled),
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_bmp__decoder__set_report_metadata),
(wuffs_base__status(*)(void*,
wuffs_base__io_buffer*,
wuffs_base__more_information*,
wuffs_base__io_buffer*))(&wuffs_bmp__decoder__tell_me_more),
(wuffs_base__range_ii_u64(*)(const void*))(&wuffs_bmp__decoder__workbuf_len),
};
// ---------------- Initializer Implementations
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_bmp__decoder__initialize(
wuffs_bmp__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options){
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (sizeof(*self) != sizeof_star_self) {
return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
}
if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
(((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
}
if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
// The whole point of this if-check is to detect an uninitialized *self.
// We disable the warning on GCC. Clang-5.0 does not have this warning.
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
if (self->private_impl.magic != 0) {
return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
}
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
} else {
if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
memset(self, 0, sizeof(*self));
options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
} else {
memset(&(self->private_impl), 0, sizeof(self->private_impl));
}
}
self->private_impl.magic = WUFFS_BASE__MAGIC;
self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
wuffs_base__image_decoder__vtable_name;
self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
(const void*)(&wuffs_bmp__decoder__func_ptrs_for__wuffs_base__image_decoder);
return wuffs_base__make_status(NULL);
}
wuffs_bmp__decoder*
wuffs_bmp__decoder__alloc() {
wuffs_bmp__decoder* x =
(wuffs_bmp__decoder*)(calloc(sizeof(wuffs_bmp__decoder), 1));
if (!x) {
return NULL;
}
if (wuffs_bmp__decoder__initialize(
x, sizeof(wuffs_bmp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
free(x);
return NULL;
}
return x;
}
size_t
sizeof__wuffs_bmp__decoder() {
return sizeof(wuffs_bmp__decoder);
}
// ---------------- Function Implementations
// -------- func bmp.decoder.set_quirk_enabled
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_bmp__decoder__set_quirk_enabled(
wuffs_bmp__decoder* self,
uint32_t a_quirk,
bool a_enabled) {
return wuffs_base__make_empty_struct();
}
// -------- func bmp.decoder.decode_image_config
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_bmp__decoder__decode_image_config(
wuffs_bmp__decoder* self,
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 1)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_magic = 0;
uint32_t v_width = 0;
uint32_t v_height = 0;
uint32_t v_planes = 0;
uint32_t v_dst_pixfmt = 0;
uint32_t v_byte_width = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if ((self->private_impl.f_call_sequence != 0) || (self->private_impl.f_io_redirect_fourcc == 1)) {
status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
goto exit;
} else if (self->private_impl.f_io_redirect_fourcc != 0) {
status = wuffs_base__make_status(wuffs_base__note__i_o_redirect);
goto ok;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint32_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
if (num_bits_0 == 8) {
t_0 = ((uint32_t)(*scratch));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0)) << 56;
}
}
v_magic = t_0;
}
if (v_magic != 19778) {
status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
goto exit;
}
self->private_data.s_decode_image_config[0].scratch = 8;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
if (self->private_data.s_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_image_config[0].scratch;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
uint32_t t_1;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
if (num_bits_1 == 24) {
t_1 = ((uint32_t)(*scratch));
break;
}
num_bits_1 += 8;
*scratch |= ((uint64_t)(num_bits_1)) << 56;
}
}
self->private_impl.f_padding = t_1;
}
if (self->private_impl.f_padding < 14) {
status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
goto exit;
}
self->private_impl.f_padding -= 14;
self->private_impl.f_io_redirect_pos = wuffs_base__u64__sat_add(((uint64_t)(self->private_impl.f_padding)), wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))));
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
uint32_t t_2;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
if (num_bits_2 == 24) {
t_2 = ((uint32_t)(*scratch));
break;
}
num_bits_2 += 8;
*scratch |= ((uint64_t)(num_bits_2)) << 56;
}
}
self->private_impl.f_bitmap_info_len = t_2;
}
if (self->private_impl.f_padding < self->private_impl.f_bitmap_info_len) {
status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
goto exit;
}
self->private_impl.f_padding -= self->private_impl.f_bitmap_info_len;
if (self->private_impl.f_bitmap_info_len == 12) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
uint32_t t_3;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_3 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
if (num_bits_3 == 8) {
t_3 = ((uint32_t)(*scratch));
break;
}
num_bits_3 += 8;
*scratch |= ((uint64_t)(num_bits_3)) << 56;
}
}
self->private_impl.f_width = t_3;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
uint32_t t_4;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_4 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
if (num_bits_4 == 8) {
t_4 = ((uint32_t)(*scratch));
break;
}
num_bits_4 += 8;
*scratch |= ((uint64_t)(num_bits_4)) << 56;
}
}
self->private_impl.f_height = t_4;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
uint32_t t_5;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_5 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_5 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_5;
if (num_bits_5 == 8) {
t_5 = ((uint32_t)(*scratch));
break;
}
num_bits_5 += 8;
*scratch |= ((uint64_t)(num_bits_5)) << 56;
}
}
v_planes = t_5;
}
if (v_planes != 1) {
status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
uint32_t t_6;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_6 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_6 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_6;
if (num_bits_6 == 8) {
t_6 = ((uint32_t)(*scratch));
break;
}
num_bits_6 += 8;
*scratch |= ((uint64_t)(num_bits_6)) << 56;
}
}
self->private_impl.f_bits_per_pixel = t_6;
}
} else if (self->private_impl.f_bitmap_info_len == 16) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
uint32_t t_7;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_7 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7;
if (num_bits_7 == 24) {
t_7 = ((uint32_t)(*scratch));
break;
}
num_bits_7 += 8;
*scratch |= ((uint64_t)(num_bits_7)) << 56;
}
}
v_width = t_7;
}
if (v_width >= 2147483648) {
status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
goto exit;
}
self->private_impl.f_width = v_width;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
uint32_t t_8;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8;
if (num_bits_8 == 24) {
t_8 = ((uint32_t)(*scratch));
break;
}
num_bits_8 += 8;
*scratch |= ((uint64_t)(num_bits_8)) << 56;
}
}
v_height = t_8;
}
if (v_height >= 2147483648) {
status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
goto exit;
}
self->private_impl.f_height = v_height;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
uint32_t t_9;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_9 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_9 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_9;
if (num_bits_9 == 8) {
t_9 = ((uint32_t)(*scratch));
break;
}
num_bits_9 += 8;
*scratch |= ((uint64_t)(num_bits_9)) << 56;
}
}
v_planes = t_9;
}
if (v_planes != 1) {
status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
uint32_t t_10;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_10 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_10 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_10;
if (num_bits_10 == 8) {
t_10 = ((uint32_t)(*scratch));
break;
}
num_bits_10 += 8;
*scratch |= ((uint64_t)(num_bits_10)) << 56;
}
}
self->private_impl.f_bits_per_pixel = t_10;
}
} else {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24);
uint32_t t_11;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_11 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(25);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_11 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_11;
if (num_bits_11 == 24) {
t_11 = ((uint32_t)(*scratch));
break;
}
num_bits_11 += 8;
*scratch |= ((uint64_t)(num_bits_11)) << 56;
}
}
v_width = t_11;
}
if (v_width >= 2147483648) {
status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
goto exit;
}
self->private_impl.f_width = v_width;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(26);
uint32_t t_12;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_12 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(27);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_12 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_12;
if (num_bits_12 == 24) {
t_12 = ((uint32_t)(*scratch));
break;
}
num_bits_12 += 8;
*scratch |= ((uint64_t)(num_bits_12)) << 56;
}
}
v_height = t_12;
}
if (v_height == 2147483648) {
status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
goto exit;
} else if (v_height >= 2147483648) {
self->private_impl.f_height = (((uint32_t)(0 - v_height)) & 2147483647);
self->private_impl.f_top_down = true;
} else {
self->private_impl.f_height = v_height;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(28);
uint32_t t_13;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_13 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(29);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_13 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_13;
if (num_bits_13 == 8) {
t_13 = ((uint32_t)(*scratch));
break;
}
num_bits_13 += 8;
*scratch |= ((uint64_t)(num_bits_13)) << 56;
}
}
v_planes = t_13;
}
if (v_planes != 1) {
status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(30);
uint32_t t_14;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_14 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(31);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_14 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_14;
if (num_bits_14 == 8) {
t_14 = ((uint32_t)(*scratch));
break;
}
num_bits_14 += 8;
*scratch |= ((uint64_t)(num_bits_14)) << 56;
}
}
self->private_impl.f_bits_per_pixel = t_14;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(32);
uint32_t t_15;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_15 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(33);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_15 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_15;
if (num_bits_15 == 24) {
t_15 = ((uint32_t)(*scratch));
break;
}
num_bits_15 += 8;
*scratch |= ((uint64_t)(num_bits_15)) << 56;
}
}
self->private_impl.f_compression = t_15;
}
if (self->private_impl.f_bits_per_pixel == 0) {
if (self->private_impl.f_compression == 4) {
self->private_impl.f_io_redirect_fourcc = 1246774599;
status = wuffs_base__make_status(wuffs_base__note__i_o_redirect);
goto ok;
} else if (self->private_impl.f_compression == 5) {
self->private_impl.f_io_redirect_fourcc = 1347307296;
status = wuffs_base__make_status(wuffs_base__note__i_o_redirect);
goto ok;
}
status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
goto exit;
}
self->private_data.s_decode_image_config[0].scratch = 20;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(34);
if (self->private_data.s_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_image_config[0].scratch;
if (self->private_impl.f_bitmap_info_len == 40) {
if (self->private_impl.f_bits_per_pixel >= 16) {
if (self->private_impl.f_padding >= 16) {
self->private_impl.f_bitmap_info_len = 56;
self->private_impl.f_padding -= 16;
} else if (self->private_impl.f_padding >= 12) {
self->private_impl.f_bitmap_info_len = 52;
self->private_impl.f_padding -= 12;
}
}
} else if ((self->private_impl.f_bitmap_info_len != 52) &&
(self->private_impl.f_bitmap_info_len != 56) &&
(self->private_impl.f_bitmap_info_len != 64) &&
(self->private_impl.f_bitmap_info_len != 108) &&
(self->private_impl.f_bitmap_info_len != 124)) {
status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
goto exit;
}
if (self->private_impl.f_compression == 6) {
self->private_impl.f_compression = 3;
}
if (self->private_impl.f_compression == 3) {
if (self->private_impl.f_bitmap_info_len >= 52) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(35);
uint32_t t_16;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_16 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(36);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_16 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_16;
if (num_bits_16 == 24) {
t_16 = ((uint32_t)(*scratch));
break;
}
num_bits_16 += 8;
*scratch |= ((uint64_t)(num_bits_16)) << 56;
}
}
self->private_impl.f_channel_masks[2] = t_16;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(37);
uint32_t t_17;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_17 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(38);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_17 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_17;
if (num_bits_17 == 24) {
t_17 = ((uint32_t)(*scratch));
break;
}
num_bits_17 += 8;
*scratch |= ((uint64_t)(num_bits_17)) << 56;
}
}
self->private_impl.f_channel_masks[1] = t_17;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(39);
uint32_t t_18;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_18 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(40);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_18 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_18;
if (num_bits_18 == 24) {
t_18 = ((uint32_t)(*scratch));
break;
}
num_bits_18 += 8;
*scratch |= ((uint64_t)(num_bits_18)) << 56;
}
}
self->private_impl.f_channel_masks[0] = t_18;
}
if (self->private_impl.f_bitmap_info_len >= 56) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(41);
uint32_t t_19;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_19 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(42);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_19 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_19;
if (num_bits_19 == 24) {
t_19 = ((uint32_t)(*scratch));
break;
}
num_bits_19 += 8;
*scratch |= ((uint64_t)(num_bits_19)) << 56;
}
}
self->private_impl.f_channel_masks[3] = t_19;
}
self->private_data.s_decode_image_config[0].scratch = ((uint32_t)(self->private_impl.f_bitmap_info_len - 56));
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(43);
if (self->private_data.s_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_image_config[0].scratch;
}
if ((self->private_impl.f_channel_masks[0] == 255) && (self->private_impl.f_channel_masks[1] == 65280) && (self->private_impl.f_channel_masks[2] == 16711680)) {
if (self->private_impl.f_bits_per_pixel == 24) {
self->private_impl.f_compression = 0;
} else if (self->private_impl.f_bits_per_pixel == 32) {
if ((self->private_impl.f_channel_masks[3] == 0) || (self->private_impl.f_channel_masks[3] == 4278190080)) {
self->private_impl.f_compression = 0;
}
}
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(44);
status = wuffs_bmp__decoder__process_masks(self);
if (status.repr) {
goto suspend;
}
}
} else if (self->private_impl.f_bitmap_info_len >= 40) {
self->private_data.s_decode_image_config[0].scratch = (self->private_impl.f_bitmap_info_len - 40);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(45);
if (self->private_data.s_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_image_config[0].scratch;
} else {
status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
goto exit;
}
}
if (self->private_impl.f_compression != 3) {
if (self->private_impl.f_bits_per_pixel < 16) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(46);
status = wuffs_bmp__decoder__read_palette(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
}
}
if (self->private_impl.f_compression == 0) {
if ((self->private_impl.f_bits_per_pixel == 1) || (self->private_impl.f_bits_per_pixel == 2) || (self->private_impl.f_bits_per_pixel == 4)) {
self->private_impl.f_src_pixfmt = 2198077448;
self->private_impl.f_compression = 256;
} else if (self->private_impl.f_bits_per_pixel == 8) {
self->private_impl.f_src_pixfmt = 2198077448;
} else if (self->private_impl.f_bits_per_pixel == 16) {
self->private_impl.f_compression = 3;
self->private_impl.f_channel_masks[0] = 31;
self->private_impl.f_channel_masks[1] = 992;
self->private_impl.f_channel_masks[2] = 31744;
self->private_impl.f_channel_masks[3] = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(47);
status = wuffs_bmp__decoder__process_masks(self);
if (status.repr) {
goto suspend;
}
self->private_impl.f_src_pixfmt = 2164308923;
} else if (self->private_impl.f_bits_per_pixel == 24) {
self->private_impl.f_src_pixfmt = 2147485832;
} else if (self->private_impl.f_bits_per_pixel == 32) {
if (self->private_impl.f_channel_masks[3] == 0) {
self->private_impl.f_src_pixfmt = 2415954056;
} else {
self->private_impl.f_src_pixfmt = 2164295816;
}
} else {
status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
goto exit;
}
} else if (self->private_impl.f_compression == 1) {
if (self->private_impl.f_bits_per_pixel == 8) {
self->private_impl.f_src_pixfmt = 2198077448;
} else {
status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
goto exit;
}
} else if (self->private_impl.f_compression == 2) {
if (self->private_impl.f_bits_per_pixel == 4) {
self->private_impl.f_src_pixfmt = 2198077448;
} else {
status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
goto exit;
}
} else if (self->private_impl.f_compression == 3) {
if ((self->private_impl.f_bits_per_pixel == 16) || (self->private_impl.f_bits_per_pixel == 32)) {
self->private_impl.f_src_pixfmt = 2164308923;
} else {
status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
goto exit;
}
} else {
status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file);
goto exit;
}
if (((self->private_impl.f_bitmap_info_len < 40) || (self->private_impl.f_bitmap_info_len == 64)) &&
(self->private_impl.f_bits_per_pixel != 1) &&
(self->private_impl.f_bits_per_pixel != 4) &&
(self->private_impl.f_bits_per_pixel != 8) &&
(self->private_impl.f_bits_per_pixel != 24)) {
status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
goto exit;
}
if (self->private_impl.f_bits_per_pixel == 1) {
v_byte_width = ((self->private_impl.f_width >> 3) + (((self->private_impl.f_width & 7) + 7) >> 3));
self->private_impl.f_pad_per_row = ((4 - (v_byte_width & 3)) & 3);
} else if (self->private_impl.f_bits_per_pixel == 2) {
v_byte_width = ((self->private_impl.f_width >> 2) + (((self->private_impl.f_width & 3) + 3) >> 2));
self->private_impl.f_pad_per_row = ((4 - (v_byte_width & 3)) & 3);
} else if (self->private_impl.f_bits_per_pixel == 4) {
v_byte_width = ((self->private_impl.f_width >> 1) + (self->private_impl.f_width & 1));
self->private_impl.f_pad_per_row = ((4 - (v_byte_width & 3)) & 3);
} else if (self->private_impl.f_bits_per_pixel == 8) {
self->private_impl.f_pad_per_row = ((4 - (self->private_impl.f_width & 3)) & 3);
} else if (self->private_impl.f_bits_per_pixel == 16) {
self->private_impl.f_pad_per_row = ((self->private_impl.f_width & 1) * 2);
} else if (self->private_impl.f_bits_per_pixel == 24) {
self->private_impl.f_pad_per_row = (self->private_impl.f_width & 3);
} else if (self->private_impl.f_bits_per_pixel == 32) {
self->private_impl.f_pad_per_row = 0;
}
self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
if (a_dst != NULL) {
v_dst_pixfmt = 2164295816;
if ((self->private_impl.f_channel_num_bits[0] > 8) ||
(self->private_impl.f_channel_num_bits[1] > 8) ||
(self->private_impl.f_channel_num_bits[2] > 8) ||
(self->private_impl.f_channel_num_bits[3] > 8)) {
v_dst_pixfmt = 2164308923;
}
wuffs_base__image_config__set(
a_dst,
v_dst_pixfmt,
0,
self->private_impl.f_width,
self->private_impl.f_height,
self->private_impl.f_frame_config_io_position,
(self->private_impl.f_channel_masks[3] == 0));
}
self->private_impl.f_call_sequence = 32;
ok:
self->private_impl.p_decode_image_config[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func bmp.decoder.decode_frame_config
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_bmp__decoder__decode_frame_config(
wuffs_bmp__decoder* self,
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 2)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_call_sequence == 32) {
} else if (self->private_impl.f_call_sequence < 32) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_bmp__decoder__decode_image_config(self, NULL, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
} else if (self->private_impl.f_call_sequence == 40) {
if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
status = wuffs_base__make_status(wuffs_base__error__bad_restart);
goto exit;
}
} else if (self->private_impl.f_call_sequence == 64) {
self->private_impl.f_call_sequence = 96;
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
} else {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
}
if (a_dst != NULL) {
wuffs_base__frame_config__set(
a_dst,
wuffs_base__utility__make_rect_ie_u32(
0,
0,
self->private_impl.f_width,
self->private_impl.f_height),
((wuffs_base__flicks)(0)),
0,
self->private_impl.f_frame_config_io_position,
0,
true,
false,
4278190080);
}
self->private_impl.f_call_sequence = 64;
ok:
self->private_impl.p_decode_frame_config[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func bmp.decoder.decode_frame
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_bmp__decoder__decode_frame(
wuffs_bmp__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 3)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
wuffs_base__status v_status = wuffs_base__make_status(NULL);
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_call_sequence == 64) {
} else if (self->private_impl.f_call_sequence < 64) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_bmp__decoder__decode_frame_config(self, NULL, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
} else {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
}
self->private_data.s_decode_frame[0].scratch = self->private_impl.f_padding;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (self->private_data.s_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_frame[0].scratch;
if ((self->private_impl.f_width > 0) && (self->private_impl.f_height > 0)) {
self->private_impl.f_dst_x = 0;
if (self->private_impl.f_top_down) {
self->private_impl.f_dst_y = 0;
self->private_impl.f_dst_y_inc = 1;
} else {
self->private_impl.f_dst_y = ((uint32_t)(self->private_impl.f_height - 1));
self->private_impl.f_dst_y_inc = 4294967295;
}
v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
wuffs_base__pixel_buffer__pixel_format(a_dst),
wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048)),
wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt),
wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024),
a_blend);
if ( ! wuffs_base__status__is_ok(&v_status)) {
status = v_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
}
while (true) {
if (self->private_impl.f_compression == 0) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
v_status = wuffs_bmp__decoder__swizzle_none(self, a_dst, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
} else if (self->private_impl.f_compression < 3) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
v_status = wuffs_bmp__decoder__swizzle_rle(self, a_dst, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
} else if (self->private_impl.f_compression == 3) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
v_status = wuffs_bmp__decoder__swizzle_bitfields(self, a_dst, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
} else {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
v_status = wuffs_bmp__decoder__swizzle_low_bit_depth(self, a_dst, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
}
if (wuffs_base__status__is_ok(&v_status)) {
goto label__0__break;
} else if (v_status.repr != wuffs_bmp__note__internal_note_short_read) {
status = v_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
}
label__0__break:;
self->private_data.s_decode_frame[0].scratch = self->private_impl.f_pending_pad;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
if (self->private_data.s_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_frame[0].scratch;
self->private_impl.f_pending_pad = 0;
}
self->private_impl.f_call_sequence = 96;
ok:
self->private_impl.p_decode_frame[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func bmp.decoder.swizzle_none
static wuffs_base__status
wuffs_bmp__decoder__swizzle_none(
wuffs_bmp__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
wuffs_base__pixel_format v_dst_pixfmt = {0};
uint32_t v_dst_bits_per_pixel = 0;
uint64_t v_dst_bytes_per_pixel = 0;
uint64_t v_dst_bytes_per_row = 0;
wuffs_base__slice_u8 v_dst_palette = {0};
wuffs_base__table_u8 v_tab = {0};
wuffs_base__slice_u8 v_dst = {0};
uint64_t v_i = 0;
uint64_t v_n = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
if ((v_dst_bits_per_pixel & 7) != 0) {
status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
goto exit;
}
v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8)));
v_dst_bytes_per_row = (((uint64_t)(self->private_impl.f_width)) * v_dst_bytes_per_pixel);
v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0);
label__outer__continue:;
while (true) {
while (self->private_impl.f_pending_pad > 0) {
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
goto ok;
}
self->private_impl.f_pending_pad -= 1;
iop_a_src += 1;
}
label__inner__continue:;
while (true) {
if (self->private_impl.f_dst_x == self->private_impl.f_width) {
self->private_impl.f_dst_x = 0;
self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
if (self->private_impl.f_height > 0) {
self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
}
goto label__outer__break;
} else if (self->private_impl.f_pad_per_row != 0) {
self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
goto label__outer__continue;
}
}
v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
}
v_i = (((uint64_t)(self->private_impl.f_dst_x)) * v_dst_bytes_per_pixel);
if (v_i >= ((uint64_t)(v_dst.len))) {
goto label__inner__continue;
}
v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
&self->private_impl.f_swizzler,
wuffs_base__slice_u8__subslice_i(v_dst, v_i),
v_dst_palette,
&iop_a_src,
io2_a_src);
if (v_n == 0) {
status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
goto ok;
}
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)((v_n & 4294967295))));
}
}
label__outer__break:;
status = wuffs_base__make_status(NULL);
goto ok;
ok:
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func bmp.decoder.swizzle_rle
static wuffs_base__status
wuffs_bmp__decoder__swizzle_rle(
wuffs_bmp__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
wuffs_base__pixel_format v_dst_pixfmt = {0};
uint32_t v_dst_bits_per_pixel = 0;
uint64_t v_dst_bytes_per_pixel = 0;
uint64_t v_dst_bytes_per_row = 0;
wuffs_base__slice_u8 v_dst_palette = {0};
wuffs_base__table_u8 v_tab = {0};
wuffs_base__slice_u8 v_row = {0};
wuffs_base__slice_u8 v_dst = {0};
uint64_t v_i = 0;
uint64_t v_n = 0;
uint32_t v_p0 = 0;
uint8_t v_code = 0;
uint8_t v_indexes[2] = {0};
uint32_t v_rle_state = 0;
uint32_t v_chunk_bits = 0;
uint32_t v_chunk_count = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
if ((v_dst_bits_per_pixel & 7) != 0) {
status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
goto exit;
}
v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8)));
v_dst_bytes_per_row = (((uint64_t)(self->private_impl.f_width)) * v_dst_bytes_per_pixel);
v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0);
v_rle_state = self->private_impl.f_rle_state;
label__outer__continue:;
while (true) {
v_row = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) {
v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row);
}
label__middle__continue:;
while (true) {
v_i = (((uint64_t)(self->private_impl.f_dst_x)) * v_dst_bytes_per_pixel);
if (v_i <= ((uint64_t)(v_row.len))) {
v_dst = wuffs_base__slice_u8__subslice_i(v_row, v_i);
} else {
v_dst = wuffs_base__utility__empty_slice_u8();
}
while (true) {
label__inner__continue:;
while (true) {
if (v_rle_state == 0) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 1) {
goto label__goto_suspend__break;
}
v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
iop_a_src += 1;
if (v_code == 0) {
v_rle_state = 2;
goto label__inner__continue;
}
self->private_impl.f_rle_length = ((uint32_t)(v_code));
v_rle_state = 1;
goto label__inner__continue;
} else if (v_rle_state == 1) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 1) {
goto label__goto_suspend__break;
}
v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
iop_a_src += 1;
if (self->private_impl.f_bits_per_pixel == 8) {
v_p0 = 0;
while (v_p0 < self->private_impl.f_rle_length) {
self->private_data.f_scratch[v_p0] = v_code;
v_p0 += 1;
}
} else {
v_indexes[0] = ((uint8_t)((v_code >> 4)));
v_indexes[1] = (v_code & 15);
v_p0 = 0;
while (v_p0 < self->private_impl.f_rle_length) {
self->private_data.f_scratch[(v_p0 + 0)] = v_indexes[0];
self->private_data.f_scratch[(v_p0 + 1)] = v_indexes[1];
v_p0 += 2;
}
}
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_rle_length));
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, self->private_impl.f_rle_length);
v_rle_state = 0;
goto label__middle__continue;
} else if (v_rle_state == 2) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 1) {
goto label__goto_suspend__break;
}
v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
iop_a_src += 1;
if (v_code < 2) {
if ((self->private_impl.f_dst_y >= self->private_impl.f_height) && (v_code == 0)) {
status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression);
goto exit;
}
wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_dst, v_dst_palette, 18446744073709551615u);
self->private_impl.f_dst_x = 0;
self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
if (v_code > 0) {
goto label__outer__break;
}
v_rle_state = 0;
goto label__outer__continue;
} else if (v_code == 2) {
v_rle_state = 4;
goto label__inner__continue;
}
self->private_impl.f_rle_length = ((uint32_t)(v_code));
self->private_impl.f_rle_padded = ((self->private_impl.f_bits_per_pixel == 8) && ((v_code & 1) != 0));
v_rle_state = 3;
goto label__inner__continue;
} else if (v_rle_state == 3) {
if (self->private_impl.f_bits_per_pixel == 8) {
v_n = wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader(
&self->private_impl.f_swizzler,
self->private_impl.f_rle_length,
v_dst,
v_dst_palette,
&iop_a_src,
io2_a_src);
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)((v_n & 4294967295))));
wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_rle_length, ((uint32_t)((v_n & 4294967295))));
} else {
v_chunk_count = ((self->private_impl.f_rle_length + 3) / 4);
v_p0 = 0;
while ((v_chunk_count > 0) && (((uint64_t)(io2_a_src - iop_a_src)) >= 2)) {
v_chunk_bits = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
iop_a_src += 2;
self->private_data.f_scratch[(v_p0 + 0)] = ((uint8_t)((15 & (v_chunk_bits >> 12))));
self->private_data.f_scratch[(v_p0 + 1)] = ((uint8_t)((15 & (v_chunk_bits >> 8))));
self->private_data.f_scratch[(v_p0 + 2)] = ((uint8_t)((15 & (v_chunk_bits >> 4))));
self->private_data.f_scratch[(v_p0 + 3)] = ((uint8_t)((15 & (v_chunk_bits >> 0))));
v_p0 = ((v_p0 & 255) + 4);
v_chunk_count -= 1;
}
v_p0 = wuffs_base__u32__min(v_p0, self->private_impl.f_rle_length);
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, v_p0));
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, v_p0);
wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_rle_length, v_p0);
}
if (self->private_impl.f_rle_length > 0) {
goto label__goto_suspend__break;
}
if (self->private_impl.f_rle_padded) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 1) {
goto label__goto_suspend__break;
}
iop_a_src += 1;
self->private_impl.f_rle_padded = false;
}
v_rle_state = 0;
goto label__middle__continue;
} else if (v_rle_state == 4) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 1) {
goto label__goto_suspend__break;
}
self->private_impl.f_rle_delta_x = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
iop_a_src += 1;
v_rle_state = 5;
goto label__inner__continue;
}
if (((uint64_t)(io2_a_src - iop_a_src)) < 1) {
goto label__goto_suspend__break;
}
v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
iop_a_src += 1;
if (self->private_impl.f_rle_delta_x > 0) {
wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_dst, v_dst_palette, ((uint64_t)(self->private_impl.f_rle_delta_x)));
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(self->private_impl.f_rle_delta_x)));
self->private_impl.f_rle_delta_x = 0;
if (self->private_impl.f_dst_x > self->private_impl.f_width) {
status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression);
goto exit;
}
}
if (v_code > 0) {
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
v_code -= 1;
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
while (true) {
self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression);
goto exit;
}
v_row = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) {
v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row);
}
if (v_code <= 0) {
wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, ((uint64_t)(self->private_impl.f_dst_x)));
goto label__0__break;
}
wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, 18446744073709551615u);
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
v_code -= 1;
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
}
label__0__break:;
}
v_rle_state = 0;
goto label__middle__continue;
}
}
label__goto_suspend__break:;
self->private_impl.f_rle_state = v_rle_state;
status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
goto ok;
}
}
label__outer__break:;
while (self->private_impl.f_dst_y < self->private_impl.f_height) {
v_row = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) {
v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row);
}
wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, 18446744073709551615u);
self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
}
status = wuffs_base__make_status(NULL);
goto ok;
ok:
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func bmp.decoder.swizzle_bitfields
static wuffs_base__status
wuffs_bmp__decoder__swizzle_bitfields(
wuffs_bmp__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
wuffs_base__pixel_format v_dst_pixfmt = {0};
uint32_t v_dst_bits_per_pixel = 0;
uint64_t v_dst_bytes_per_pixel = 0;
uint64_t v_dst_bytes_per_row = 0;
wuffs_base__slice_u8 v_dst_palette = {0};
wuffs_base__table_u8 v_tab = {0};
wuffs_base__slice_u8 v_dst = {0};
uint64_t v_i = 0;
uint64_t v_n = 0;
uint32_t v_p0 = 0;
uint32_t v_p1 = 0;
uint32_t v_p1_temp = 0;
uint32_t v_num_bits = 0;
uint32_t v_c = 0;
uint32_t v_c32 = 0;
uint32_t v_channel = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
if ((v_dst_bits_per_pixel & 7) != 0) {
status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
goto exit;
}
v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8)));
v_dst_bytes_per_row = (((uint64_t)(self->private_impl.f_width)) * v_dst_bytes_per_pixel);
v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0);
label__outer__continue:;
while (true) {
while (self->private_impl.f_pending_pad > 0) {
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
goto ok;
}
self->private_impl.f_pending_pad -= 1;
iop_a_src += 1;
}
label__inner__continue:;
while (true) {
if (self->private_impl.f_dst_x == self->private_impl.f_width) {
self->private_impl.f_dst_x = 0;
self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
if (self->private_impl.f_height > 0) {
self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
}
goto label__outer__break;
} else if (self->private_impl.f_pad_per_row != 0) {
self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row;
goto label__outer__continue;
}
}
v_p1_temp = ((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x));
v_p1 = wuffs_base__u32__min(v_p1_temp, 256);
v_p0 = 0;
while (v_p0 < v_p1) {
if (self->private_impl.f_bits_per_pixel == 16) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 2) {
goto label__0__break;
}
v_c32 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
if (((uint64_t)(io2_a_src - iop_a_src)) < 4) {
goto label__0__break;
}
v_c32 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
}
v_channel = 0;
while (v_channel < 4) {
if (self->private_impl.f_channel_num_bits[v_channel] == 0) {
self->private_data.f_scratch[((8 * v_p0) + (2 * v_channel) + 0)] = 255;
self->private_data.f_scratch[((8 * v_p0) + (2 * v_channel) + 1)] = 255;
} else {
v_c = ((v_c32 & self->private_impl.f_channel_masks[v_channel]) >> self->private_impl.f_channel_shifts[v_channel]);
v_num_bits = ((uint32_t)(self->private_impl.f_channel_num_bits[v_channel]));
while (v_num_bits < 16) {
v_c |= ((uint32_t)(v_c << v_num_bits));
v_num_bits *= 2;
}
v_c >>= (v_num_bits - 16);
self->private_data.f_scratch[((8 * v_p0) + (2 * v_channel) + 0)] = ((uint8_t)((255 & (v_c >> 0))));
self->private_data.f_scratch[((8 * v_p0) + (2 * v_channel) + 1)] = ((uint8_t)((255 & (v_c >> 8))));
}
v_channel += 1;
}
v_p0 += 1;
}
label__0__break:;
v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
}
v_i = (((uint64_t)(self->private_impl.f_dst_x)) * v_dst_bytes_per_pixel);
if (v_i >= ((uint64_t)(v_dst.len))) {
goto label__inner__continue;
}
v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, (8 * v_p0)));
if (v_n == 0) {
status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
goto ok;
}
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)((v_n & 4294967295))));
}
}
label__outer__break:;
status = wuffs_base__make_status(NULL);
goto ok;
ok:
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func bmp.decoder.swizzle_low_bit_depth
static wuffs_base__status
wuffs_bmp__decoder__swizzle_low_bit_depth(
wuffs_bmp__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
wuffs_base__pixel_format v_dst_pixfmt = {0};
uint32_t v_dst_bits_per_pixel = 0;
uint64_t v_dst_bytes_per_pixel = 0;
uint64_t v_dst_bytes_per_row = 0;
wuffs_base__slice_u8 v_dst_palette = {0};
wuffs_base__table_u8 v_tab = {0};
wuffs_base__slice_u8 v_dst = {0};
uint64_t v_i = 0;
uint64_t v_n = 0;
uint32_t v_p0 = 0;
uint32_t v_chunk_bits = 0;
uint32_t v_chunk_count = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
if ((v_dst_bits_per_pixel & 7) != 0) {
status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
goto exit;
}
v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8)));
v_dst_bytes_per_row = (((uint64_t)(self->private_impl.f_width)) * v_dst_bytes_per_pixel);
v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048));
v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0);
label__loop__continue:;
while (true) {
if (self->private_impl.f_dst_x == self->private_impl.f_width) {
self->private_impl.f_dst_x = 0;
self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc;
if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
goto label__loop__break;
}
}
v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
}
v_i = (((uint64_t)(self->private_impl.f_dst_x)) * v_dst_bytes_per_pixel);
if (v_i >= ((uint64_t)(v_dst.len))) {
goto label__loop__continue;
}
v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_i);
v_p0 = 0;
if (self->private_impl.f_bits_per_pixel == 1) {
v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 31) / 32);
v_chunk_count = wuffs_base__u32__min(v_chunk_count, 16);
while ((v_chunk_count > 0) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4)) {
v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
self->private_data.f_scratch[(v_p0 + 0)] = ((uint8_t)((1 & (v_chunk_bits >> 31))));
self->private_data.f_scratch[(v_p0 + 1)] = ((uint8_t)((1 & (v_chunk_bits >> 30))));
self->private_data.f_scratch[(v_p0 + 2)] = ((uint8_t)((1 & (v_chunk_bits >> 29))));
self->private_data.f_scratch[(v_p0 + 3)] = ((uint8_t)((1 & (v_chunk_bits >> 28))));
self->private_data.f_scratch[(v_p0 + 4)] = ((uint8_t)((1 & (v_chunk_bits >> 27))));
self->private_data.f_scratch[(v_p0 + 5)] = ((uint8_t)((1 & (v_chunk_bits >> 26))));
self->private_data.f_scratch[(v_p0 + 6)] = ((uint8_t)((1 & (v_chunk_bits >> 25))));
self->private_data.f_scratch[(v_p0 + 7)] = ((uint8_t)((1 & (v_chunk_bits >> 24))));
self->private_data.f_scratch[(v_p0 + 8)] = ((uint8_t)((1 & (v_chunk_bits >> 23))));
self->private_data.f_scratch[(v_p0 + 9)] = ((uint8_t)((1 & (v_chunk_bits >> 22))));
self->private_data.f_scratch[(v_p0 + 10)] = ((uint8_t)((1 & (v_chunk_bits >> 21))));
self->private_data.f_scratch[(v_p0 + 11)] = ((uint8_t)((1 & (v_chunk_bits >> 20))));
self->private_data.f_scratch[(v_p0 + 12)] = ((uint8_t)((1 & (v_chunk_bits >> 19))));
self->private_data.f_scratch[(v_p0 + 13)] = ((uint8_t)((1 & (v_chunk_bits >> 18))));
self->private_data.f_scratch[(v_p0 + 14)] = ((uint8_t)((1 & (v_chunk_bits >> 17))));
self->private_data.f_scratch[(v_p0 + 15)] = ((uint8_t)((1 & (v_chunk_bits >> 16))));
self->private_data.f_scratch[(v_p0 + 16)] = ((uint8_t)((1 & (v_chunk_bits >> 15))));
self->private_data.f_scratch[(v_p0 + 17)] = ((uint8_t)((1 & (v_chunk_bits >> 14))));
self->private_data.f_scratch[(v_p0 + 18)] = ((uint8_t)((1 & (v_chunk_bits >> 13))));
self->private_data.f_scratch[(v_p0 + 19)] = ((uint8_t)((1 & (v_chunk_bits >> 12))));
self->private_data.f_scratch[(v_p0 + 20)] = ((uint8_t)((1 & (v_chunk_bits >> 11))));
self->private_data.f_scratch[(v_p0 + 21)] = ((uint8_t)((1 & (v_chunk_bits >> 10))));
self->private_data.f_scratch[(v_p0 + 22)] = ((uint8_t)((1 & (v_chunk_bits >> 9))));
self->private_data.f_scratch[(v_p0 + 23)] = ((uint8_t)((1 & (v_chunk_bits >> 8))));
self->private_data.f_scratch[(v_p0 + 24)] = ((uint8_t)((1 & (v_chunk_bits >> 7))));
self->private_data.f_scratch[(v_p0 + 25)] = ((uint8_t)((1 & (v_chunk_bits >> 6))));
self->private_data.f_scratch[(v_p0 + 26)] = ((uint8_t)((1 & (v_chunk_bits >> 5))));
self->private_data.f_scratch[(v_p0 + 27)] = ((uint8_t)((1 & (v_chunk_bits >> 4))));
self->private_data.f_scratch[(v_p0 + 28)] = ((uint8_t)((1 & (v_chunk_bits >> 3))));
self->private_data.f_scratch[(v_p0 + 29)] = ((uint8_t)((1 & (v_chunk_bits >> 2))));
self->private_data.f_scratch[(v_p0 + 30)] = ((uint8_t)((1 & (v_chunk_bits >> 1))));
self->private_data.f_scratch[(v_p0 + 31)] = ((uint8_t)((1 & (v_chunk_bits >> 0))));
v_p0 = ((v_p0 & 511) + 32);
v_chunk_count -= 1;
}
} else if (self->private_impl.f_bits_per_pixel == 2) {
v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 15) / 16);
v_chunk_count = wuffs_base__u32__min(v_chunk_count, 32);
while ((v_chunk_count > 0) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4)) {
v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
self->private_data.f_scratch[(v_p0 + 0)] = ((uint8_t)((3 & (v_chunk_bits >> 30))));
self->private_data.f_scratch[(v_p0 + 1)] = ((uint8_t)((3 & (v_chunk_bits >> 28))));
self->private_data.f_scratch[(v_p0 + 2)] = ((uint8_t)((3 & (v_chunk_bits >> 26))));
self->private_data.f_scratch[(v_p0 + 3)] = ((uint8_t)((3 & (v_chunk_bits >> 24))));
self->private_data.f_scratch[(v_p0 + 4)] = ((uint8_t)((3 & (v_chunk_bits >> 22))));
self->private_data.f_scratch[(v_p0 + 5)] = ((uint8_t)((3 & (v_chunk_bits >> 20))));
self->private_data.f_scratch[(v_p0 + 6)] = ((uint8_t)((3 & (v_chunk_bits >> 18))));
self->private_data.f_scratch[(v_p0 + 7)] = ((uint8_t)((3 & (v_chunk_bits >> 16))));
self->private_data.f_scratch[(v_p0 + 8)] = ((uint8_t)((3 & (v_chunk_bits >> 14))));
self->private_data.f_scratch[(v_p0 + 9)] = ((uint8_t)((3 & (v_chunk_bits >> 12))));
self->private_data.f_scratch[(v_p0 + 10)] = ((uint8_t)((3 & (v_chunk_bits >> 10))));
self->private_data.f_scratch[(v_p0 + 11)] = ((uint8_t)((3 & (v_chunk_bits >> 8))));
self->private_data.f_scratch[(v_p0 + 12)] = ((uint8_t)((3 & (v_chunk_bits >> 6))));
self->private_data.f_scratch[(v_p0 + 13)] = ((uint8_t)((3 & (v_chunk_bits >> 4))));
self->private_data.f_scratch[(v_p0 + 14)] = ((uint8_t)((3 & (v_chunk_bits >> 2))));
self->private_data.f_scratch[(v_p0 + 15)] = ((uint8_t)((3 & (v_chunk_bits >> 0))));
v_p0 = ((v_p0 & 511) + 16);
v_chunk_count -= 1;
}
} else if (self->private_impl.f_bits_per_pixel == 4) {
v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 7) / 8);
v_chunk_count = wuffs_base__u32__min(v_chunk_count, 64);
while ((v_chunk_count > 0) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4)) {
v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
self->private_data.f_scratch[(v_p0 + 0)] = ((uint8_t)((15 & (v_chunk_bits >> 28))));
self->private_data.f_scratch[(v_p0 + 1)] = ((uint8_t)((15 & (v_chunk_bits >> 24))));
self->private_data.f_scratch[(v_p0 + 2)] = ((uint8_t)((15 & (v_chunk_bits >> 20))));
self->private_data.f_scratch[(v_p0 + 3)] = ((uint8_t)((15 & (v_chunk_bits >> 16))));
self->private_data.f_scratch[(v_p0 + 4)] = ((uint8_t)((15 & (v_chunk_bits >> 12))));
self->private_data.f_scratch[(v_p0 + 5)] = ((uint8_t)((15 & (v_chunk_bits >> 8))));
self->private_data.f_scratch[(v_p0 + 6)] = ((uint8_t)((15 & (v_chunk_bits >> 4))));
self->private_data.f_scratch[(v_p0 + 7)] = ((uint8_t)((15 & (v_chunk_bits >> 0))));
v_p0 = ((v_p0 & 511) + 8);
v_chunk_count -= 1;
}
}
v_p0 = wuffs_base__u32__min(v_p0, wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x));
v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, v_p0));
if (v_n == 0) {
status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read);
goto ok;
}
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)((v_n & 4294967295))));
}
label__loop__break:;
status = wuffs_base__make_status(NULL);
goto ok;
ok:
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func bmp.decoder.frame_dirty_rect
WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
wuffs_bmp__decoder__frame_dirty_rect(
const wuffs_bmp__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_rect_ie_u32();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_rect_ie_u32();
}
return wuffs_base__utility__make_rect_ie_u32(
0,
0,
self->private_impl.f_width,
self->private_impl.f_height);
}
// -------- func bmp.decoder.num_animation_loops
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_bmp__decoder__num_animation_loops(
const wuffs_bmp__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
return 0;
}
// -------- func bmp.decoder.num_decoded_frame_configs
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_bmp__decoder__num_decoded_frame_configs(
const wuffs_bmp__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
if (self->private_impl.f_call_sequence > 32) {
return 1;
}
return 0;
}
// -------- func bmp.decoder.num_decoded_frames
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_bmp__decoder__num_decoded_frames(
const wuffs_bmp__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
if (self->private_impl.f_call_sequence > 64) {
return 1;
}
return 0;
}
// -------- func bmp.decoder.restart_frame
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_bmp__decoder__restart_frame(
wuffs_bmp__decoder* self,
uint64_t a_index,
uint64_t a_io_position) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (self->private_impl.f_call_sequence < 32) {
return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
}
if (a_index != 0) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
self->private_impl.f_call_sequence = 40;
self->private_impl.f_frame_config_io_position = a_io_position;
return wuffs_base__make_status(NULL);
}
// -------- func bmp.decoder.set_report_metadata
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_bmp__decoder__set_report_metadata(
wuffs_bmp__decoder* self,
uint32_t a_fourcc,
bool a_report) {
return wuffs_base__make_empty_struct();
}
// -------- func bmp.decoder.tell_me_more
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_bmp__decoder__tell_me_more(
wuffs_bmp__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 4)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
if (self->private_impl.f_io_redirect_fourcc <= 1) {
status = wuffs_base__make_status(wuffs_base__error__no_more_information);
goto exit;
}
if (a_minfo != NULL) {
wuffs_base__more_information__set(a_minfo,
1,
self->private_impl.f_io_redirect_fourcc,
0,
self->private_impl.f_io_redirect_pos,
18446744073709551615u);
}
self->private_impl.f_io_redirect_fourcc = 1;
goto ok;
ok:
goto exit;
exit:
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func bmp.decoder.workbuf_len
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_bmp__decoder__workbuf_len(
const wuffs_bmp__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
return wuffs_base__utility__make_range_ii_u64(0, 0);
}
// -------- func bmp.decoder.read_palette
static wuffs_base__status
wuffs_bmp__decoder__read_palette(
wuffs_bmp__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_i = 0;
uint32_t v_argb = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_read_palette[0];
if (coro_susp_point) {
v_i = self->private_data.s_read_palette[0].v_i;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_bitmap_info_len == 12) {
while ((v_i < 256) && (self->private_impl.f_padding >= 3)) {
self->private_impl.f_padding -= 3;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint32_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
t_0 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
iop_a_src += 3;
} else {
self->private_data.s_read_palette[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_read_palette[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
if (num_bits_0 == 16) {
t_0 = ((uint32_t)(*scratch));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0)) << 56;
}
}
v_argb = t_0;
}
v_argb |= 4278190080;
self->private_data.f_src_palette[((4 * v_i) + 0)] = ((uint8_t)(((v_argb >> 0) & 255)));
self->private_data.f_src_palette[((4 * v_i) + 1)] = ((uint8_t)(((v_argb >> 8) & 255)));
self->private_data.f_src_palette[((4 * v_i) + 2)] = ((uint8_t)(((v_argb >> 16) & 255)));
self->private_data.f_src_palette[((4 * v_i) + 3)] = ((uint8_t)(((v_argb >> 24) & 255)));
v_i += 1;
}
} else {
while ((v_i < 256) && (self->private_impl.f_padding >= 4)) {
self->private_impl.f_padding -= 4;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
uint32_t t_1;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_read_palette[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_read_palette[0].scratch;
uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
if (num_bits_1 == 24) {
t_1 = ((uint32_t)(*scratch));
break;
}
num_bits_1 += 8;
*scratch |= ((uint64_t)(num_bits_1)) << 56;
}
}
v_argb = t_1;
}
v_argb |= 4278190080;
self->private_data.f_src_palette[((4 * v_i) + 0)] = ((uint8_t)(((v_argb >> 0) & 255)));
self->private_data.f_src_palette[((4 * v_i) + 1)] = ((uint8_t)(((v_argb >> 8) & 255)));
self->private_data.f_src_palette[((4 * v_i) + 2)] = ((uint8_t)(((v_argb >> 16) & 255)));
self->private_data.f_src_palette[((4 * v_i) + 3)] = ((uint8_t)(((v_argb >> 24) & 255)));
v_i += 1;
}
}
while (v_i < 256) {
self->private_data.f_src_palette[((4 * v_i) + 0)] = 0;
self->private_data.f_src_palette[((4 * v_i) + 1)] = 0;
self->private_data.f_src_palette[((4 * v_i) + 2)] = 0;
self->private_data.f_src_palette[((4 * v_i) + 3)] = 255;
v_i += 1;
}
goto ok;
ok:
self->private_impl.p_read_palette[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_read_palette[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_read_palette[0].v_i = v_i;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func bmp.decoder.process_masks
static wuffs_base__status
wuffs_bmp__decoder__process_masks(
wuffs_bmp__decoder* self) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_i = 0;
uint32_t v_mask = 0;
uint32_t v_n = 0;
while (v_i < 4) {
v_mask = self->private_impl.f_channel_masks[v_i];
if (v_mask != 0) {
v_n = 0;
while ((v_mask & 1) == 0) {
v_n += 1;
v_mask >>= 1;
}
self->private_impl.f_channel_shifts[v_i] = ((uint8_t)((v_n & 31)));
v_n = 0;
while ((v_mask & 1) == 1) {
v_n += 1;
v_mask >>= 1;
}
if ((v_mask != 0) || (v_n > 32)) {
status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
goto exit;
}
self->private_impl.f_channel_num_bits[v_i] = ((uint8_t)(v_n));
} else if (v_i != 3) {
status = wuffs_base__make_status(wuffs_bmp__error__bad_header);
goto exit;
}
v_i += 1;
}
goto ok;
ok:
goto exit;
exit:
return status;
}
#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2)
// ---------------- Status Codes Implementations
const char wuffs_bzip2__error__bad_huffman_code_over_subscribed[] = "#bzip2: bad Huffman code (over-subscribed)";
const char wuffs_bzip2__error__bad_huffman_code_under_subscribed[] = "#bzip2: bad Huffman code (under-subscribed)";
const char wuffs_bzip2__error__bad_block_header[] = "#bzip2: bad block header";
const char wuffs_bzip2__error__bad_block_length[] = "#bzip2: bad block length";
const char wuffs_bzip2__error__bad_checksum[] = "#bzip2: bad checksum";
const char wuffs_bzip2__error__bad_header[] = "#bzip2: bad header";
const char wuffs_bzip2__error__bad_number_of_sections[] = "#bzip2: bad number of sections";
const char wuffs_bzip2__error__unsupported_block_randomization[] = "#bzip2: unsupported block randomization";
const char wuffs_bzip2__error__internal_error_inconsistent_huffman_decoder_state[] = "#bzip2: internal error: inconsistent Huffman decoder state";
// ---------------- Private Consts
static const uint8_t
WUFFS_BZIP2__CLAMP_TO_5[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
0, 1, 2, 3, 4, 5, 5, 5,
};
static const uint32_t
WUFFS_BZIP2__REV_CRC32_TABLE[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
0, 79764919, 159529838, 222504665, 319059676, 398814059, 445009330, 507990021,
638119352, 583659535, 797628118, 726387553, 890018660, 835552979, 1015980042, 944750013,
1276238704, 1221641927, 1167319070, 1095957929, 1595256236, 1540665371, 1452775106, 1381403509,
1780037320, 1859660671, 1671105958, 1733955601, 2031960084, 2111593891, 1889500026, 1952343757,
2552477408, 2632100695, 2443283854, 2506133561, 2334638140, 2414271883, 2191915858, 2254759653,
3190512472, 3135915759, 3081330742, 3009969537, 2905550212, 2850959411, 2762807018, 2691435357,
3560074640, 3505614887, 3719321342, 3648080713, 3342211916, 3287746299, 3467911202, 3396681109,
4063920168, 4143685023, 4223187782, 4286162673, 3779000052, 3858754371, 3904687514, 3967668269,
881225847, 809987520, 1023691545, 969234094, 662832811, 591600412, 771767749, 717299826,
311336399, 374308984, 453813921, 533576470, 25881363, 88864420, 134795389, 214552010,
2023205639, 2086057648, 1897238633, 1976864222, 1804852699, 1867694188, 1645340341, 1724971778,
1587496639, 1516133128, 1461550545, 1406951526, 1302016099, 1230646740, 1142491917, 1087903418,
2896545431, 2825181984, 2770861561, 2716262478, 3215044683, 3143675388, 3055782693, 3001194130,
2326604591, 2389456536, 2200899649, 2280525302, 2578013683, 2640855108, 2418763421, 2498394922,
3769900519, 3832873040, 3912640137, 3992402750, 4088425275, 4151408268, 4197601365, 4277358050,
3334271071, 3263032808, 3476998961, 3422541446, 3585640067, 3514407732, 3694837229, 3640369242,
1762451694, 1842216281, 1619975040, 1682949687, 2047383090, 2127137669, 1938468188, 2001449195,
1325665622, 1271206113, 1183200824, 1111960463, 1543535498, 1489069629, 1434599652, 1363369299,
622672798, 568075817, 748617968, 677256519, 907627842, 853037301, 1067152940, 995781531,
51762726, 131386257, 177728840, 240578815, 269590778, 349224269, 429104020, 491947555,
4046411278, 4126034873, 4172115296, 4234965207, 3794477266, 3874110821, 3953728444, 4016571915,
3609705398, 3555108353, 3735388376, 3664026991, 3290680682, 3236090077, 3449943556, 3378572211,
3174993278, 3120533705, 3032266256, 2961025959, 2923101090, 2868635157, 2813903052, 2742672763,
2604032198, 2683796849, 2461293480, 2524268063, 2284983834, 2364738477, 2175806836, 2238787779,
1569362073, 1498123566, 1409854455, 1355396672, 1317987909, 1246755826, 1192025387, 1137557660,
2072149281, 2135122070, 1912620623, 1992383480, 1753615357, 1816598090, 1627664531, 1707420964,
295390185, 358241886, 404320391, 483945776, 43990325, 106832002, 186451547, 266083308,
932423249, 861060070, 1041341759, 986742920, 613929101, 542559546, 756411363, 701822548,
3316196985, 3244833742, 3425377559, 3370778784, 3601682597, 3530312978, 3744426955, 3689838204,
3819031489, 3881883254, 3928223919, 4007849240, 4037393693, 4100235434, 4180117107, 4259748804,
2310601993, 2373574846, 2151335527, 2231098320, 2596047829, 2659030626, 2470359227, 2550115596,
2947551409, 2876312838, 2788305887, 2733848168, 3165939309, 3094707162, 3040238851, 2985771188,
};
// ---------------- Private Initializer Prototypes
// ---------------- Private Function Prototypes
static wuffs_base__status
wuffs_bzip2__decoder__prepare_block(
wuffs_bzip2__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_bzip2__decoder__read_code_lengths(
wuffs_bzip2__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_bzip2__decoder__build_huffman_tree(
wuffs_bzip2__decoder* self,
uint32_t a_which);
static wuffs_base__empty_struct
wuffs_bzip2__decoder__build_huffman_table(
wuffs_bzip2__decoder* self,
uint32_t a_which);
static wuffs_base__empty_struct
wuffs_bzip2__decoder__invert_bwt(
wuffs_bzip2__decoder* self);
static wuffs_base__empty_struct
wuffs_bzip2__decoder__flush_fast(
wuffs_bzip2__decoder* self,
wuffs_base__io_buffer* a_dst);
static wuffs_base__status
wuffs_bzip2__decoder__flush_slow(
wuffs_bzip2__decoder* self,
wuffs_base__io_buffer* a_dst);
static wuffs_base__status
wuffs_bzip2__decoder__decode_huffman_fast(
wuffs_bzip2__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_bzip2__decoder__decode_huffman_slow(
wuffs_bzip2__decoder* self,
wuffs_base__io_buffer* a_src);
// ---------------- VTables
const wuffs_base__io_transformer__func_ptrs
wuffs_bzip2__decoder__func_ptrs_for__wuffs_base__io_transformer = {
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_bzip2__decoder__set_quirk_enabled),
(wuffs_base__status(*)(void*,
wuffs_base__io_buffer*,
wuffs_base__io_buffer*,
wuffs_base__slice_u8))(&wuffs_bzip2__decoder__transform_io),
(wuffs_base__range_ii_u64(*)(const void*))(&wuffs_bzip2__decoder__workbuf_len),
};
// ---------------- Initializer Implementations
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_bzip2__decoder__initialize(
wuffs_bzip2__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options){
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (sizeof(*self) != sizeof_star_self) {
return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
}
if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
(((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
}
if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
// The whole point of this if-check is to detect an uninitialized *self.
// We disable the warning on GCC. Clang-5.0 does not have this warning.
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
if (self->private_impl.magic != 0) {
return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
}
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
} else {
if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
memset(self, 0, sizeof(*self));
options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
} else {
memset(&(self->private_impl), 0, sizeof(self->private_impl));
}
}
self->private_impl.magic = WUFFS_BASE__MAGIC;
self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
wuffs_base__io_transformer__vtable_name;
self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
(const void*)(&wuffs_bzip2__decoder__func_ptrs_for__wuffs_base__io_transformer);
return wuffs_base__make_status(NULL);
}
wuffs_bzip2__decoder*
wuffs_bzip2__decoder__alloc() {
wuffs_bzip2__decoder* x =
(wuffs_bzip2__decoder*)(calloc(sizeof(wuffs_bzip2__decoder), 1));
if (!x) {
return NULL;
}
if (wuffs_bzip2__decoder__initialize(
x, sizeof(wuffs_bzip2__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
free(x);
return NULL;
}
return x;
}
size_t
sizeof__wuffs_bzip2__decoder() {
return sizeof(wuffs_bzip2__decoder);
}
// ---------------- Function Implementations
// -------- func bzip2.decoder.set_quirk_enabled
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_bzip2__decoder__set_quirk_enabled(
wuffs_bzip2__decoder* self,
uint32_t a_quirk,
bool a_enabled) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
if (a_quirk == 1) {
self->private_impl.f_ignore_checksum = a_enabled;
}
return wuffs_base__make_empty_struct();
}
// -------- func bzip2.decoder.workbuf_len
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_bzip2__decoder__workbuf_len(
const wuffs_bzip2__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
return wuffs_base__utility__make_range_ii_u64(0, 0);
}
// -------- func bzip2.decoder.transform_io
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_bzip2__decoder__transform_io(
wuffs_bzip2__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 1)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_c = 0;
uint32_t v_i = 0;
uint64_t v_tag = 0;
wuffs_base__status v_status = wuffs_base__make_status(NULL);
uint32_t v_final_checksum_want = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_transform_io[0];
if (coro_susp_point) {
v_i = self->private_data.s_transform_io[0].v_i;
v_tag = self->private_data.s_transform_io[0].v_tag;
v_final_checksum_want = self->private_data.s_transform_io[0].v_final_checksum_want;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
v_c = t_0;
}
if (v_c != 66) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_1 = *iop_a_src++;
v_c = t_1;
}
if (v_c != 90) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_2 = *iop_a_src++;
v_c = t_2;
}
if (v_c != 104) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_3 = *iop_a_src++;
v_c = t_3;
}
if ((v_c < 49) || (57 < v_c)) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_header);
goto exit;
}
self->private_impl.f_max_incl_block_size = (((uint32_t)((v_c - 48))) * 100000);
while (true) {
v_tag = 0;
v_i = 0;
while (v_i < 48) {
if (self->private_impl.f_n_bits <= 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_4 = *iop_a_src++;
v_c = t_4;
}
self->private_impl.f_bits = (((uint32_t)(v_c)) << 24);
self->private_impl.f_n_bits = 8;
}
v_tag <<= 1;
v_tag |= ((uint64_t)((self->private_impl.f_bits >> 31)));
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
v_i += 1;
}
if (v_tag == 25779555029136) {
goto label__0__break;
} else if (v_tag != 54156738319193) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
goto exit;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
status = wuffs_bzip2__decoder__prepare_block(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
self->private_impl.f_block_size = 0;
self->private_impl.f_decode_huffman_finished = false;
self->private_impl.f_decode_huffman_which = WUFFS_BZIP2__CLAMP_TO_5[(self->private_data.f_huffman_selectors[0] & 7)];
self->private_impl.f_decode_huffman_ticks = 50;
self->private_impl.f_decode_huffman_section = 0;
self->private_impl.f_decode_huffman_run_shift = 0;
while ( ! self->private_impl.f_decode_huffman_finished) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
v_status = wuffs_bzip2__decoder__decode_huffman_fast(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (wuffs_base__status__is_error(&v_status)) {
status = v_status;
goto exit;
} else if (self->private_impl.f_decode_huffman_finished) {
goto label__1__break;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
status = wuffs_bzip2__decoder__decode_huffman_slow(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
}
label__1__break:;
wuffs_bzip2__decoder__invert_bwt(self);
self->private_impl.f_block_checksum_have = 4294967295;
if (self->private_impl.f_original_pointer >= self->private_impl.f_block_size) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
goto exit;
}
self->private_impl.f_flush_pointer = (self->private_data.f_bwt[self->private_impl.f_original_pointer] >> 12);
self->private_impl.f_flush_repeat_count = 0;
self->private_impl.f_flush_prev = 0;
while (self->private_impl.f_block_size > 0) {
wuffs_bzip2__decoder__flush_fast(self, a_dst);
if (self->private_impl.f_block_size <= 0) {
goto label__2__break;
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
status = wuffs_bzip2__decoder__flush_slow(self, a_dst);
if (status.repr) {
goto suspend;
}
}
label__2__break:;
self->private_impl.f_block_checksum_have ^= 4294967295;
if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_block_checksum_have != self->private_impl.f_block_checksum_want)) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_checksum);
goto exit;
}
self->private_impl.f_final_checksum_have = (self->private_impl.f_block_checksum_have ^ ((self->private_impl.f_final_checksum_have >> 31) | ((uint32_t)(self->private_impl.f_final_checksum_have << 1))));
}
label__0__break:;
v_final_checksum_want = 0;
v_i = 0;
while (v_i < 32) {
if (self->private_impl.f_n_bits <= 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_5 = *iop_a_src++;
v_c = t_5;
}
self->private_impl.f_bits = (((uint32_t)(v_c)) << 24);
self->private_impl.f_n_bits = 8;
}
v_final_checksum_want <<= 1;
v_final_checksum_want |= (self->private_impl.f_bits >> 31);
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
v_i += 1;
}
if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_final_checksum_have != v_final_checksum_want)) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_checksum);
goto exit;
}
goto ok;
ok:
self->private_impl.p_transform_io[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
self->private_data.s_transform_io[0].v_i = v_i;
self->private_data.s_transform_io[0].v_tag = v_tag;
self->private_data.s_transform_io[0].v_final_checksum_want = v_final_checksum_want;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func bzip2.decoder.prepare_block
static wuffs_base__status
wuffs_bzip2__decoder__prepare_block(
wuffs_bzip2__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_c = 0;
uint32_t v_i = 0;
uint32_t v_j = 0;
uint32_t v_selector = 0;
uint32_t v_sel_ff = 0;
uint8_t v_movee = 0;
wuffs_base__status v_status = wuffs_base__make_status(NULL);
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_prepare_block[0];
if (coro_susp_point) {
v_i = self->private_data.s_prepare_block[0].v_i;
v_selector = self->private_data.s_prepare_block[0].v_selector;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
self->private_impl.f_block_checksum_want = 0;
v_i = 0;
while (v_i < 32) {
if (self->private_impl.f_n_bits <= 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
v_c = t_0;
}
self->private_impl.f_bits = (((uint32_t)(v_c)) << 24);
self->private_impl.f_n_bits = 8;
}
self->private_impl.f_block_checksum_want <<= 1;
self->private_impl.f_block_checksum_want |= (self->private_impl.f_bits >> 31);
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
v_i += 1;
}
if (self->private_impl.f_n_bits <= 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_1 = *iop_a_src++;
v_c = t_1;
}
self->private_impl.f_bits = (((uint32_t)(v_c)) << 24);
self->private_impl.f_n_bits = 8;
}
if ((self->private_impl.f_bits >> 31) != 0) {
status = wuffs_base__make_status(wuffs_bzip2__error__unsupported_block_randomization);
goto exit;
}
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
self->private_impl.f_original_pointer = 0;
v_i = 0;
while (v_i < 24) {
if (self->private_impl.f_n_bits <= 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_2 = *iop_a_src++;
v_c = t_2;
}
self->private_impl.f_bits = (((uint32_t)(v_c)) << 24);
self->private_impl.f_n_bits = 8;
}
self->private_impl.f_original_pointer <<= 1;
self->private_impl.f_original_pointer |= (self->private_impl.f_bits >> 31);
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
v_i += 1;
}
v_i = 0;
while (v_i < 256) {
self->private_data.f_presence[v_i] = 0;
v_i += 1;
}
v_i = 0;
while (v_i < 256) {
if (self->private_impl.f_n_bits <= 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_3 = *iop_a_src++;
v_c = t_3;
}
self->private_impl.f_bits = (((uint32_t)(v_c)) << 24);
self->private_impl.f_n_bits = 8;
}
if ((self->private_impl.f_bits >> 31) != 0) {
self->private_data.f_presence[v_i] = 1;
}
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
v_i += 16;
}
self->private_data.f_scratch = 0;
v_i = 0;
label__0__continue:;
while (v_i < 256) {
if (self->private_data.f_presence[v_i] == 0) {
v_i += 16;
goto label__0__continue;
}
while (true) {
if (self->private_impl.f_n_bits <= 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_4 = *iop_a_src++;
v_c = t_4;
}
self->private_impl.f_bits = (((uint32_t)(v_c)) << 24);
self->private_impl.f_n_bits = 8;
}
self->private_data.f_scratch += (self->private_impl.f_bits >> 31);
self->private_data.f_presence[(v_i & 255)] = ((uint8_t)((self->private_impl.f_bits >> 31)));
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
v_i += 1;
if ((v_i & 15) == 0) {
goto label__1__break;
}
}
label__1__break:;
}
if ((self->private_data.f_scratch < 1) || (256 < self->private_data.f_scratch)) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
goto exit;
}
self->private_impl.f_num_symbols = (self->private_data.f_scratch + 2);
self->private_data.f_scratch = 0;
v_i = 0;
while (v_i < 3) {
if (self->private_impl.f_n_bits <= 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_5 = *iop_a_src++;
v_c = t_5;
}
self->private_impl.f_bits = (((uint32_t)(v_c)) << 24);
self->private_impl.f_n_bits = 8;
}
self->private_data.f_scratch <<= 1;
self->private_data.f_scratch |= (self->private_impl.f_bits >> 31);
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
v_i += 1;
}
if ((self->private_data.f_scratch < 2) || (6 < self->private_data.f_scratch)) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
goto exit;
}
self->private_impl.f_num_huffman_codes = self->private_data.f_scratch;
self->private_data.f_scratch = 0;
v_i = 0;
while (v_i < 15) {
if (self->private_impl.f_n_bits <= 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_6 = *iop_a_src++;
v_c = t_6;
}
self->private_impl.f_bits = (((uint32_t)(v_c)) << 24);
self->private_impl.f_n_bits = 8;
}
self->private_data.f_scratch <<= 1;
self->private_data.f_scratch |= (self->private_impl.f_bits >> 31);
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
v_i += 1;
}
if ((self->private_data.f_scratch < 1) || (18001 < self->private_data.f_scratch)) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
goto exit;
}
self->private_impl.f_num_sections = self->private_data.f_scratch;
v_i = 0;
while (v_i < self->private_impl.f_num_huffman_codes) {
self->private_data.f_mtft[v_i] = ((uint8_t)(v_i));
v_i += 1;
}
v_i = 0;
while (v_i < self->private_impl.f_num_sections) {
v_selector = 0;
while (true) {
if (self->private_impl.f_n_bits <= 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_7 = *iop_a_src++;
v_c = t_7;
}
self->private_impl.f_bits = (((uint32_t)(v_c)) << 24);
self->private_impl.f_n_bits = 8;
}
if ((self->private_impl.f_bits >> 31) == 0) {
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
goto label__2__break;
}
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
v_selector += 1;
if (v_selector >= self->private_impl.f_num_huffman_codes) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
goto exit;
}
}
label__2__break:;
if (v_selector == 0) {
self->private_data.f_huffman_selectors[v_i] = self->private_data.f_mtft[0];
} else {
v_sel_ff = (v_selector & 255);
v_movee = self->private_data.f_mtft[v_sel_ff];
wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1 + v_sel_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_sel_ff));
self->private_data.f_mtft[0] = v_movee;
self->private_data.f_huffman_selectors[v_i] = v_movee;
}
v_i += 1;
}
v_i = 0;
while (v_i < self->private_impl.f_num_huffman_codes) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
status = wuffs_bzip2__decoder__read_code_lengths(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
v_status = wuffs_bzip2__decoder__build_huffman_tree(self, v_i);
if (wuffs_base__status__is_error(&v_status)) {
status = v_status;
goto exit;
}
wuffs_bzip2__decoder__build_huffman_table(self, v_i);
v_i += 1;
}
v_i = 0;
v_j = 0;
while (v_i < 256) {
if (self->private_data.f_presence[v_i] != 0) {
self->private_data.f_mtft[(v_j & 255)] = ((uint8_t)(v_i));
v_j += 1;
}
v_i += 1;
}
v_i = 0;
while (v_i < 256) {
self->private_data.f_letter_counts[v_i] = 0;
v_i += 1;
}
goto ok;
ok:
self->private_impl.p_prepare_block[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_prepare_block[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_prepare_block[0].v_i = v_i;
self->private_data.s_prepare_block[0].v_selector = v_selector;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func bzip2.decoder.read_code_lengths
static wuffs_base__status
wuffs_bzip2__decoder__read_code_lengths(
wuffs_bzip2__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_c = 0;
uint32_t v_i = 0;
uint32_t v_code_length = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_read_code_lengths[0];
if (coro_susp_point) {
v_i = self->private_data.s_read_code_lengths[0].v_i;
v_code_length = self->private_data.s_read_code_lengths[0].v_code_length;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
self->private_impl.f_code_lengths_bitmask = 0;
v_i = 0;
while (v_i < 5) {
if (self->private_impl.f_n_bits <= 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
v_c = t_0;
}
self->private_impl.f_bits = (((uint32_t)(v_c)) << 24);
self->private_impl.f_n_bits = 8;
}
v_code_length <<= 1;
v_code_length |= (self->private_impl.f_bits >> 31);
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
v_i += 1;
}
v_i = 0;
while (v_i < self->private_impl.f_num_symbols) {
while (true) {
if ((v_code_length < 1) || (20 < v_code_length)) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header);
goto exit;
}
if (self->private_impl.f_n_bits <= 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_1 = *iop_a_src++;
v_c = t_1;
}
self->private_impl.f_bits = (((uint32_t)(v_c)) << 24);
self->private_impl.f_n_bits = 8;
}
if ((self->private_impl.f_bits >> 31) == 0) {
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
goto label__0__break;
}
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
if (self->private_impl.f_n_bits <= 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_2 = *iop_a_src++;
v_c = t_2;
}
self->private_impl.f_bits = (((uint32_t)(v_c)) << 24);
self->private_impl.f_n_bits = 8;
}
if ((self->private_impl.f_bits >> 31) == 0) {
v_code_length += 1;
} else {
v_code_length -= 1;
}
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
}
label__0__break:;
self->private_impl.f_code_lengths_bitmask |= (((uint32_t)(1)) << (v_code_length & 31));
self->private_data.f_bwt[v_i] = v_code_length;
v_i += 1;
}
goto ok;
ok:
self->private_impl.p_read_code_lengths[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_read_code_lengths[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_read_code_lengths[0].v_i = v_i;
self->private_data.s_read_code_lengths[0].v_code_length = v_code_length;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func bzip2.decoder.build_huffman_tree
static wuffs_base__status
wuffs_bzip2__decoder__build_huffman_tree(
wuffs_bzip2__decoder* self,
uint32_t a_which) {
uint32_t v_code_length = 0;
uint32_t v_symbol_index = 0;
uint32_t v_num_branch_nodes = 0;
uint32_t v_stack_height = 0;
uint32_t v_stack_values[21] = {0};
uint32_t v_node_index = 0;
uint16_t v_leaf_value = 0;
self->private_data.f_huffman_trees[a_which][0][0] = 0;
self->private_data.f_huffman_trees[a_which][0][1] = 0;
v_num_branch_nodes = 1;
v_stack_height = 1;
v_stack_values[0] = 0;
v_code_length = 1;
label__0__continue:;
while (v_code_length <= 20) {
if ((self->private_impl.f_code_lengths_bitmask & (((uint32_t)(1)) << v_code_length)) == 0) {
v_code_length += 1;
goto label__0__continue;
}
v_symbol_index = 0;
label__1__continue:;
while (v_symbol_index < self->private_impl.f_num_symbols) {
if (self->private_data.f_bwt[v_symbol_index] != v_code_length) {
v_symbol_index += 1;
goto label__1__continue;
}
while (true) {
if (v_stack_height <= 0) {
return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_over_subscribed);
} else if (v_stack_height >= v_code_length) {
goto label__2__break;
}
v_node_index = v_stack_values[(v_stack_height - 1)];
if (self->private_data.f_huffman_trees[a_which][v_node_index][0] == 0) {
self->private_data.f_huffman_trees[a_which][v_node_index][0] = ((uint16_t)(v_num_branch_nodes));
} else {
self->private_data.f_huffman_trees[a_which][v_node_index][1] = ((uint16_t)(v_num_branch_nodes));
}
if (v_num_branch_nodes >= 257) {
return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_under_subscribed);
}
v_stack_values[v_stack_height] = v_num_branch_nodes;
self->private_data.f_huffman_trees[a_which][v_num_branch_nodes][0] = 0;
self->private_data.f_huffman_trees[a_which][v_num_branch_nodes][1] = 0;
v_num_branch_nodes += 1;
v_stack_height += 1;
}
label__2__break:;
v_node_index = v_stack_values[(v_stack_height - 1)];
if (v_symbol_index < 2) {
v_leaf_value = ((uint16_t)((769 + v_symbol_index)));
} else if ((v_symbol_index + 1) < self->private_impl.f_num_symbols) {
v_leaf_value = ((uint16_t)((511 + v_symbol_index)));
} else {
v_leaf_value = 768;
}
if (self->private_data.f_huffman_trees[a_which][v_node_index][0] == 0) {
self->private_data.f_huffman_trees[a_which][v_node_index][0] = v_leaf_value;
} else {
self->private_data.f_huffman_trees[a_which][v_node_index][1] = v_leaf_value;
v_stack_height -= 1;
while (v_stack_height > 0) {
v_node_index = v_stack_values[(v_stack_height - 1)];
if (self->private_data.f_huffman_trees[a_which][v_node_index][1] == 0) {
goto label__3__break;
}
v_stack_height -= 1;
}
label__3__break:;
}
v_symbol_index += 1;
}
v_code_length += 1;
}
if (v_stack_height != 0) {
return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_under_subscribed);
}
return wuffs_base__make_status(NULL);
}
// -------- func bzip2.decoder.build_huffman_table
static wuffs_base__empty_struct
wuffs_bzip2__decoder__build_huffman_table(
wuffs_bzip2__decoder* self,
uint32_t a_which) {
uint32_t v_i = 0;
uint32_t v_bits = 0;
uint16_t v_n_bits = 0;
uint16_t v_child = 0;
while (v_i < 256) {
v_bits = (v_i << 24);
v_n_bits = 0;
v_child = 0;
while ((v_child < 257) && (v_n_bits < 8)) {
v_child = self->private_data.f_huffman_trees[a_which][v_child][(v_bits >> 31)];
v_bits <<= 1;
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
v_n_bits += 1;
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
}
self->private_data.f_huffman_tables[a_which][v_i] = ((uint16_t)((v_child | (v_n_bits << 12))));
v_i += 1;
}
return wuffs_base__make_empty_struct();
}
// -------- func bzip2.decoder.invert_bwt
static wuffs_base__empty_struct
wuffs_bzip2__decoder__invert_bwt(
wuffs_bzip2__decoder* self) {
uint32_t v_i = 0;
uint32_t v_letter = 0;
uint32_t v_sum = 0;
uint32_t v_old_sum = 0;
v_sum = 0;
v_i = 0;
while (v_i < 256) {
v_old_sum = v_sum;
v_sum += self->private_data.f_letter_counts[v_i];
self->private_data.f_letter_counts[v_i] = v_old_sum;
v_i += 1;
}
v_i = 0;
while (v_i < self->private_impl.f_block_size) {
v_letter = (self->private_data.f_bwt[v_i] & 255);
self->private_data.f_bwt[(self->private_data.f_letter_counts[v_letter] & 1048575)] |= (v_i << 12);
self->private_data.f_letter_counts[v_letter] += 1;
v_i += 1;
}
return wuffs_base__make_empty_struct();
}
// -------- func bzip2.decoder.flush_fast
static wuffs_base__empty_struct
wuffs_bzip2__decoder__flush_fast(
wuffs_bzip2__decoder* self,
wuffs_base__io_buffer* a_dst) {
uint32_t v_flush_pointer = 0;
uint32_t v_flush_repeat_count = 0;
uint8_t v_flush_prev = 0;
uint32_t v_block_checksum_have = 0;
uint32_t v_block_size = 0;
uint32_t v_entry = 0;
uint8_t v_curr = 0;
uint8_t* iop_a_dst = NULL;
uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
v_flush_pointer = self->private_impl.f_flush_pointer;
v_flush_repeat_count = self->private_impl.f_flush_repeat_count;
v_flush_prev = self->private_impl.f_flush_prev;
v_block_checksum_have = self->private_impl.f_block_checksum_have;
v_block_size = self->private_impl.f_block_size;
while ((v_block_size > 0) && (((uint64_t)(io2_a_dst - iop_a_dst)) >= 255)) {
if (v_flush_repeat_count < 4) {
v_entry = self->private_data.f_bwt[v_flush_pointer];
v_curr = ((uint8_t)((v_entry & 255)));
v_flush_pointer = (v_entry >> 12);
if (v_curr == v_flush_prev) {
v_flush_repeat_count += 1;
} else {
v_flush_repeat_count = 1;
}
v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24))) ^ v_curr)] ^ ((uint32_t)(v_block_checksum_have << 8)));
(wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_curr), iop_a_dst += 1);
v_flush_prev = v_curr;
v_block_size -= 1;
} else {
v_entry = self->private_data.f_bwt[v_flush_pointer];
v_curr = ((uint8_t)((v_entry & 255)));
v_flush_pointer = (v_entry >> 12);
v_flush_repeat_count = ((uint32_t)(v_curr));
while (v_flush_repeat_count > 0) {
v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24))) ^ v_flush_prev)] ^ ((uint32_t)(v_block_checksum_have << 8)));
if (((uint64_t)(io2_a_dst - iop_a_dst)) > 0) {
(wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_flush_prev), iop_a_dst += 1);
}
v_flush_repeat_count -= 1;
}
v_flush_repeat_count = 0;
v_flush_prev = v_curr;
v_block_size -= 1;
}
}
self->private_impl.f_flush_pointer = v_flush_pointer;
self->private_impl.f_flush_repeat_count = v_flush_repeat_count;
self->private_impl.f_flush_prev = v_flush_prev;
self->private_impl.f_block_checksum_have = v_block_checksum_have;
if (v_block_size <= 900000) {
self->private_impl.f_block_size = v_block_size;
}
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
return wuffs_base__make_empty_struct();
}
// -------- func bzip2.decoder.flush_slow
static wuffs_base__status
wuffs_bzip2__decoder__flush_slow(
wuffs_bzip2__decoder* self,
wuffs_base__io_buffer* a_dst) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_flush_pointer = 0;
uint32_t v_flush_repeat_count = 0;
uint8_t v_flush_prev = 0;
uint32_t v_block_checksum_have = 0;
uint32_t v_block_size = 0;
uint32_t v_entry = 0;
uint8_t v_curr = 0;
uint8_t* iop_a_dst = NULL;
uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
uint32_t coro_susp_point = self->private_impl.p_flush_slow[0];
if (coro_susp_point) {
v_flush_pointer = self->private_data.s_flush_slow[0].v_flush_pointer;
v_flush_repeat_count = self->private_data.s_flush_slow[0].v_flush_repeat_count;
v_flush_prev = self->private_data.s_flush_slow[0].v_flush_prev;
v_block_checksum_have = self->private_data.s_flush_slow[0].v_block_checksum_have;
v_block_size = self->private_data.s_flush_slow[0].v_block_size;
v_curr = self->private_data.s_flush_slow[0].v_curr;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
v_flush_pointer = self->private_impl.f_flush_pointer;
v_flush_repeat_count = self->private_impl.f_flush_repeat_count;
v_flush_prev = self->private_impl.f_flush_prev;
v_block_checksum_have = self->private_impl.f_block_checksum_have;
v_block_size = self->private_impl.f_block_size;
while ((v_block_size > 0) && ! (self->private_impl.p_flush_slow[0] != 0)) {
if (v_flush_repeat_count < 4) {
v_entry = self->private_data.f_bwt[v_flush_pointer];
v_curr = ((uint8_t)((v_entry & 255)));
v_flush_pointer = (v_entry >> 12);
if (v_curr == v_flush_prev) {
v_flush_repeat_count += 1;
} else {
v_flush_repeat_count = 1;
}
v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24))) ^ v_curr)] ^ ((uint32_t)(v_block_checksum_have << 8)));
self->private_data.s_flush_slow[0].scratch = v_curr;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (iop_a_dst == io2_a_dst) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
goto suspend;
}
*iop_a_dst++ = ((uint8_t)(self->private_data.s_flush_slow[0].scratch));
v_flush_prev = v_curr;
v_block_size -= 1;
} else {
v_entry = self->private_data.f_bwt[v_flush_pointer];
v_curr = ((uint8_t)((v_entry & 255)));
v_flush_pointer = (v_entry >> 12);
v_flush_repeat_count = ((uint32_t)(v_curr));
while (v_flush_repeat_count > 0) {
v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24))) ^ v_flush_prev)] ^ ((uint32_t)(v_block_checksum_have << 8)));
self->private_data.s_flush_slow[0].scratch = v_flush_prev;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (iop_a_dst == io2_a_dst) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
goto suspend;
}
*iop_a_dst++ = ((uint8_t)(self->private_data.s_flush_slow[0].scratch));
v_flush_repeat_count -= 1;
}
v_flush_repeat_count = 0;
v_flush_prev = v_curr;
v_block_size -= 1;
}
}
self->private_impl.f_flush_pointer = v_flush_pointer;
self->private_impl.f_flush_repeat_count = v_flush_repeat_count;
self->private_impl.f_flush_prev = v_flush_prev;
self->private_impl.f_block_checksum_have = v_block_checksum_have;
if (v_block_size <= 900000) {
self->private_impl.f_block_size = v_block_size;
}
goto ok;
ok:
self->private_impl.p_flush_slow[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_flush_slow[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_flush_slow[0].v_flush_pointer = v_flush_pointer;
self->private_data.s_flush_slow[0].v_flush_repeat_count = v_flush_repeat_count;
self->private_data.s_flush_slow[0].v_flush_prev = v_flush_prev;
self->private_data.s_flush_slow[0].v_block_checksum_have = v_block_checksum_have;
self->private_data.s_flush_slow[0].v_block_size = v_block_size;
self->private_data.s_flush_slow[0].v_curr = v_curr;
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
return status;
}
// -------- func bzip2.decoder.decode_huffman_fast
static wuffs_base__status
wuffs_bzip2__decoder__decode_huffman_fast(
wuffs_bzip2__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_bits = 0;
uint32_t v_n_bits = 0;
uint32_t v_block_size = 0;
uint8_t v_which = 0;
uint32_t v_ticks = 0;
uint32_t v_section = 0;
uint32_t v_run_shift = 0;
uint16_t v_table_entry = 0;
uint16_t v_child = 0;
uint32_t v_child_ff = 0;
uint32_t v_i = 0;
uint32_t v_j = 0;
uint32_t v_output = 0;
uint32_t v_run = 0;
uint32_t v_mtft0 = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
v_bits = self->private_impl.f_bits;
v_n_bits = self->private_impl.f_n_bits;
v_block_size = self->private_impl.f_block_size;
v_which = self->private_impl.f_decode_huffman_which;
v_ticks = self->private_impl.f_decode_huffman_ticks;
v_section = self->private_impl.f_decode_huffman_section;
v_run_shift = self->private_impl.f_decode_huffman_run_shift;
label__outer__continue:;
while (((uint64_t)(io2_a_src - iop_a_src)) >= 4) {
if (v_ticks > 0) {
v_ticks -= 1;
} else {
v_ticks = 49;
v_section += 1;
if (v_section >= self->private_impl.f_num_sections) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_number_of_sections);
goto exit;
}
v_which = WUFFS_BZIP2__CLAMP_TO_5[(self->private_data.f_huffman_selectors[(v_section & 32767)] & 7)];
}
v_bits |= (wuffs_base__peek_u32be__no_bounds_check(iop_a_src) >> v_n_bits);
iop_a_src += ((31 - v_n_bits) >> 3);
v_n_bits |= 24;
v_table_entry = self->private_data.f_huffman_tables[v_which][(v_bits >> 24)];
v_bits <<= (v_table_entry >> 12);
v_n_bits -= ((uint32_t)((v_table_entry >> 12)));
v_child = (v_table_entry & 1023);
while (v_child < 257) {
v_child = self->private_data.f_huffman_trees[v_which][v_child][(v_bits >> 31)];
v_bits <<= 1;
if (v_n_bits <= 0) {
status = wuffs_base__make_status(wuffs_bzip2__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
}
v_n_bits -= 1;
}
if (v_child < 768) {
v_child_ff = ((uint32_t)((v_child & 255)));
v_output = ((uint32_t)(self->private_data.f_mtft[v_child_ff]));
wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1 + v_child_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_child_ff));
self->private_data.f_mtft[0] = ((uint8_t)(v_output));
self->private_data.f_letter_counts[v_output] += 1;
self->private_data.f_bwt[v_block_size] = v_output;
if (v_block_size >= self->private_impl.f_max_incl_block_size) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
goto exit;
}
v_block_size += 1;
v_run_shift = 0;
goto label__outer__continue;
} else if (v_child == 768) {
self->private_impl.f_decode_huffman_finished = true;
goto label__outer__break;
}
if (v_run_shift >= 23) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
goto exit;
}
v_run = ((((uint32_t)(v_child)) & 3) << v_run_shift);
v_run_shift += 1;
v_i = v_block_size;
v_j = (v_run + v_block_size);
if (v_j > self->private_impl.f_max_incl_block_size) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
goto exit;
}
v_block_size = v_j;
v_mtft0 = ((uint32_t)(self->private_data.f_mtft[0]));
self->private_data.f_letter_counts[v_mtft0] += v_run;
while (v_i < v_j) {
self->private_data.f_bwt[v_i] = v_mtft0;
v_i += 1;
}
}
label__outer__break:;
self->private_impl.f_bits = v_bits;
self->private_impl.f_n_bits = v_n_bits;
self->private_impl.f_block_size = v_block_size;
self->private_impl.f_decode_huffman_which = v_which;
self->private_impl.f_decode_huffman_ticks = v_ticks;
self->private_impl.f_decode_huffman_section = v_section;
self->private_impl.f_decode_huffman_run_shift = v_run_shift;
status = wuffs_base__make_status(NULL);
goto ok;
ok:
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func bzip2.decoder.decode_huffman_slow
static wuffs_base__status
wuffs_bzip2__decoder__decode_huffman_slow(
wuffs_bzip2__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_c = 0;
uint32_t v_node_index = 0;
uint16_t v_child = 0;
uint32_t v_child_ff = 0;
uint32_t v_i = 0;
uint32_t v_j = 0;
uint32_t v_output = 0;
uint32_t v_run = 0;
uint32_t v_mtft0 = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_huffman_slow[0];
if (coro_susp_point) {
v_node_index = self->private_data.s_decode_huffman_slow[0].v_node_index;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
while ( ! (self->private_impl.p_decode_huffman_slow[0] != 0)) {
if (self->private_impl.f_decode_huffman_ticks > 0) {
self->private_impl.f_decode_huffman_ticks -= 1;
} else {
self->private_impl.f_decode_huffman_ticks = 49;
self->private_impl.f_decode_huffman_section += 1;
if (self->private_impl.f_decode_huffman_section >= self->private_impl.f_num_sections) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_number_of_sections);
goto exit;
}
self->private_impl.f_decode_huffman_which = WUFFS_BZIP2__CLAMP_TO_5[(self->private_data.f_huffman_selectors[(self->private_impl.f_decode_huffman_section & 32767)] & 7)];
}
v_node_index = 0;
label__0__continue:;
while (true) {
if (self->private_impl.f_n_bits <= 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
v_c = t_0;
}
self->private_impl.f_bits = (((uint32_t)(v_c)) << 24);
self->private_impl.f_n_bits = 8;
}
v_child = self->private_data.f_huffman_trees[self->private_impl.f_decode_huffman_which][v_node_index][(self->private_impl.f_bits >> 31)];
self->private_impl.f_bits <<= 1;
self->private_impl.f_n_bits -= 1;
if (v_child < 257) {
v_node_index = ((uint32_t)(v_child));
goto label__0__continue;
} else if (v_child < 768) {
v_child_ff = ((uint32_t)((v_child & 255)));
v_output = ((uint32_t)(self->private_data.f_mtft[v_child_ff]));
wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1 + v_child_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_child_ff));
self->private_data.f_mtft[0] = ((uint8_t)(v_output));
self->private_data.f_letter_counts[v_output] += 1;
self->private_data.f_bwt[self->private_impl.f_block_size] = v_output;
if (self->private_impl.f_block_size >= self->private_impl.f_max_incl_block_size) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
goto exit;
}
self->private_impl.f_block_size += 1;
self->private_impl.f_decode_huffman_run_shift = 0;
goto label__0__break;
} else if (v_child == 768) {
self->private_impl.f_decode_huffman_finished = true;
goto label__outer__break;
}
if (self->private_impl.f_decode_huffman_run_shift >= 23) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
goto exit;
}
v_run = ((((uint32_t)(v_child)) & 3) << self->private_impl.f_decode_huffman_run_shift);
self->private_impl.f_decode_huffman_run_shift += 1;
v_i = self->private_impl.f_block_size;
v_j = (v_run + self->private_impl.f_block_size);
if (v_j > self->private_impl.f_max_incl_block_size) {
status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length);
goto exit;
}
self->private_impl.f_block_size = v_j;
v_mtft0 = ((uint32_t)(self->private_data.f_mtft[0]));
self->private_data.f_letter_counts[v_mtft0] += v_run;
while (v_i < v_j) {
self->private_data.f_bwt[v_i] = v_mtft0;
v_i += 1;
}
goto label__0__break;
}
label__0__break:;
}
label__outer__break:;
goto ok;
ok:
self->private_impl.p_decode_huffman_slow[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_huffman_slow[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_decode_huffman_slow[0].v_node_index = v_node_index;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR)
// ---------------- Status Codes Implementations
const char wuffs_cbor__error__bad_input[] = "#cbor: bad input";
const char wuffs_cbor__error__unsupported_recursion_depth[] = "#cbor: unsupported recursion depth";
const char wuffs_cbor__error__internal_error_inconsistent_i_o[] = "#cbor: internal error: inconsistent I/O";
const char wuffs_cbor__error__internal_error_inconsistent_token_length[] = "#cbor: internal error: inconsistent token length";
// ---------------- Private Consts
static const uint32_t
WUFFS_CBOR__LITERALS[4] WUFFS_BASE__POTENTIALLY_UNUSED = {
8388612, 8388616, 8388610, 8388609,
};
static const uint8_t
WUFFS_CBOR__TOKEN_LENGTHS[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1,
2, 3, 5, 9, 0, 0, 0, 1,
};
// ---------------- Private Initializer Prototypes
// ---------------- Private Function Prototypes
// ---------------- VTables
const wuffs_base__token_decoder__func_ptrs
wuffs_cbor__decoder__func_ptrs_for__wuffs_base__token_decoder = {
(wuffs_base__status(*)(void*,
wuffs_base__token_buffer*,
wuffs_base__io_buffer*,
wuffs_base__slice_u8))(&wuffs_cbor__decoder__decode_tokens),
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_cbor__decoder__set_quirk_enabled),
(wuffs_base__range_ii_u64(*)(const void*))(&wuffs_cbor__decoder__workbuf_len),
};
// ---------------- Initializer Implementations
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_cbor__decoder__initialize(
wuffs_cbor__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options){
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (sizeof(*self) != sizeof_star_self) {
return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
}
if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
(((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
}
if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
// The whole point of this if-check is to detect an uninitialized *self.
// We disable the warning on GCC. Clang-5.0 does not have this warning.
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
if (self->private_impl.magic != 0) {
return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
}
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
} else {
if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
memset(self, 0, sizeof(*self));
options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
} else {
memset(&(self->private_impl), 0, sizeof(self->private_impl));
}
}
self->private_impl.magic = WUFFS_BASE__MAGIC;
self->private_impl.vtable_for__wuffs_base__token_decoder.vtable_name =
wuffs_base__token_decoder__vtable_name;
self->private_impl.vtable_for__wuffs_base__token_decoder.function_pointers =
(const void*)(&wuffs_cbor__decoder__func_ptrs_for__wuffs_base__token_decoder);
return wuffs_base__make_status(NULL);
}
wuffs_cbor__decoder*
wuffs_cbor__decoder__alloc() {
wuffs_cbor__decoder* x =
(wuffs_cbor__decoder*)(calloc(sizeof(wuffs_cbor__decoder), 1));
if (!x) {
return NULL;
}
if (wuffs_cbor__decoder__initialize(
x, sizeof(wuffs_cbor__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
free(x);
return NULL;
}
return x;
}
size_t
sizeof__wuffs_cbor__decoder() {
return sizeof(wuffs_cbor__decoder);
}
// ---------------- Function Implementations
// -------- func cbor.decoder.set_quirk_enabled
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_cbor__decoder__set_quirk_enabled(
wuffs_cbor__decoder* self,
uint32_t a_quirk,
bool a_enabled) {
return wuffs_base__make_empty_struct();
}
// -------- func cbor.decoder.workbuf_len
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_cbor__decoder__workbuf_len(
const wuffs_cbor__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
return wuffs_base__utility__empty_range_ii_u64();
}
// -------- func cbor.decoder.decode_tokens
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_cbor__decoder__decode_tokens(
wuffs_cbor__decoder* self,
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 1)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint64_t v_string_length = 0;
uint64_t v_n64 = 0;
uint32_t v_depth = 0;
uint32_t v_stack_byte = 0;
uint32_t v_stack_bit = 0;
uint32_t v_stack_val = 0;
uint32_t v_token_length = 0;
uint32_t v_vminor = 0;
uint32_t v_vminor_alt = 0;
uint32_t v_continued = 0;
uint8_t v_c = 0;
uint8_t v_c_major = 0;
uint8_t v_c_minor = 0;
bool v_tagged = false;
uint8_t v_indefinite_string_major_type = 0;
wuffs_base__token* iop_a_dst = NULL;
wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_tokens[0];
if (coro_susp_point) {
v_string_length = self->private_data.s_decode_tokens[0].v_string_length;
v_depth = self->private_data.s_decode_tokens[0].v_depth;
v_tagged = self->private_data.s_decode_tokens[0].v_tagged;
v_indefinite_string_major_type = self->private_data.s_decode_tokens[0].v_indefinite_string_major_type;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_end_of_data) {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
}
label__outer__continue:;
while (true) {
while (true) {
while (true) {
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
goto label__outer__continue;
}
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
goto label__outer__continue;
}
v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
if ((v_indefinite_string_major_type != 0) && (v_indefinite_string_major_type != (v_c >> 5))) {
if (v_c != 255) {
status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
goto exit;
}
v_vminor = 4194560;
if (v_indefinite_string_major_type == 3) {
v_vminor |= 19;
}
v_indefinite_string_major_type = 0;
iop_a_src += 1;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__goto_parsed_a_leaf_value__break;
}
iop_a_src += 1;
v_c_major = ((uint8_t)((v_c >> 5)));
v_c_minor = (v_c & 31);
if (v_c_minor < 24) {
v_string_length = ((uint64_t)(v_c_minor));
} else {
while (true) {
if (v_c_minor == 24) {
if (((uint64_t)(io2_a_src - iop_a_src)) >= 1) {
v_string_length = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src)));
iop_a_src += 1;
goto label__goto_have_string_length__break;
}
} else if (v_c_minor == 25) {
if (((uint64_t)(io2_a_src - iop_a_src)) >= 2) {
v_string_length = ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
iop_a_src += 2;
goto label__goto_have_string_length__break;
}
} else if (v_c_minor == 26) {
if (((uint64_t)(io2_a_src - iop_a_src)) >= 4) {
v_string_length = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
iop_a_src += 4;
goto label__goto_have_string_length__break;
}
} else if (v_c_minor == 27) {
if (((uint64_t)(io2_a_src - iop_a_src)) >= 8) {
v_string_length = wuffs_base__peek_u64be__no_bounds_check(iop_a_src);
iop_a_src += 8;
goto label__goto_have_string_length__break;
}
} else {
v_string_length = 0;
goto label__goto_have_string_length__break;
}
if (iop_a_src > io1_a_src) {
iop_a_src--;
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
goto label__outer__continue;
}
status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o);
goto exit;
}
label__goto_have_string_length__break:;
}
if (v_c_major == 0) {
if (v_c_minor < 26) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)((14680064 | ((uint32_t)((v_string_length & 65535)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__goto_parsed_a_leaf_value__break;
} else if (v_c_minor < 28) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)((14680064 | ((uint32_t)((v_string_length >> 46)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(0)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
*iop_a_dst++ = wuffs_base__make_token(
(~(v_string_length & 70368744177663) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) |
(((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__goto_parsed_a_leaf_value__break;
}
} else if (v_c_major == 1) {
if (v_c_minor < 26) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)((12582912 | (2097151 - ((uint32_t)((v_string_length & 65535))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__goto_parsed_a_leaf_value__break;
} else if (v_c_minor < 28) {
if (v_string_length < 9223372036854775808u) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)((12582912 | (2097151 - ((uint32_t)((v_string_length >> 46))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(0)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
*iop_a_dst++ = wuffs_base__make_token(
(~((18446744073709551615u - v_string_length) & 70368744177663) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) |
(((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
} else {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(787997)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
(((uint64_t)(16777216)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(9)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
}
goto label__goto_parsed_a_leaf_value__break;
}
} else if (v_c_major == 2) {
if (v_c_minor < 28) {
if (v_string_length == 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194560)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__goto_parsed_a_leaf_value__break;
}
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194560)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
} else if (v_c_minor == 31) {
if (v_indefinite_string_major_type != 0) {
goto label__goto_fail__break;
}
v_indefinite_string_major_type = 2;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194560)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__outer__continue;
} else {
goto label__goto_fail__break;
}
label__0__continue:;
while (true) {
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
goto label__0__continue;
}
v_n64 = wuffs_base__u64__min(v_string_length, ((uint64_t)(io2_a_src - iop_a_src)));
v_token_length = ((uint32_t)((v_n64 & 65535)));
if (v_n64 > 65535) {
v_token_length = 65535;
} else if (v_token_length <= 0) {
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
goto label__0__continue;
}
if (((uint64_t)(io2_a_src - iop_a_src)) < ((uint64_t)(v_token_length))) {
status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_token_length);
goto exit;
}
v_string_length -= ((uint64_t)(v_token_length));
v_continued = 0;
if ((v_string_length > 0) || (v_indefinite_string_major_type > 0)) {
v_continued = 1;
}
iop_a_src += v_token_length;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194816)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(v_continued)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(v_token_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
if (v_string_length > 0) {
goto label__0__continue;
} else if (v_indefinite_string_major_type > 0) {
goto label__outer__continue;
}
goto label__goto_parsed_a_leaf_value__break;
}
} else if (v_c_major == 3) {
if (v_c_minor < 28) {
if (v_string_length == 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194579)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__goto_parsed_a_leaf_value__break;
}
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194579)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
} else if (v_c_minor == 31) {
if (v_indefinite_string_major_type != 0) {
goto label__goto_fail__break;
}
v_indefinite_string_major_type = 3;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194579)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__outer__continue;
} else {
goto label__goto_fail__break;
}
label__1__continue:;
while (true) {
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
goto label__1__continue;
}
v_n64 = wuffs_base__u64__min(v_string_length, 65535);
v_n64 = ((uint64_t)(wuffs_base__utf_8__longest_valid_prefix(iop_a_src,
((size_t)(wuffs_base__u64__min(((uint64_t)(io2_a_src - iop_a_src)), v_n64))))));
v_token_length = ((uint32_t)((v_n64 & 65535)));
if (v_token_length <= 0) {
if ((a_src && a_src->meta.closed) || (((uint64_t)(io2_a_src - iop_a_src)) >= 4)) {
status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
goto label__1__continue;
}
if (((uint64_t)(io2_a_src - iop_a_src)) < ((uint64_t)(v_token_length))) {
status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_token_length);
goto exit;
}
v_string_length -= ((uint64_t)(v_token_length));
v_continued = 0;
if ((v_string_length > 0) || (v_indefinite_string_major_type > 0)) {
v_continued = 1;
}
iop_a_src += v_token_length;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(v_continued)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(v_token_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
if (v_string_length > 0) {
goto label__1__continue;
} else if (v_indefinite_string_major_type > 0) {
goto label__outer__continue;
}
goto label__goto_parsed_a_leaf_value__break;
}
} else if (v_c_major == 4) {
if (WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor] == 0) {
goto label__goto_fail__break;
} else if (v_depth >= 1024) {
v_token_length = ((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor]));
while ((v_token_length > 0) && (iop_a_src > io1_a_src)) {
iop_a_src--;
v_token_length -= 1;
}
status = wuffs_base__make_status(wuffs_cbor__error__unsupported_recursion_depth);
goto exit;
}
v_vminor = 2105361;
v_vminor_alt = 2101282;
if (v_depth > 0) {
v_stack_byte = ((v_depth - 1) / 16);
v_stack_bit = (((v_depth - 1) & 15) * 2);
if (0 == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1)) << v_stack_bit))) {
v_vminor = 2105377;
v_vminor_alt = 2105378;
} else {
v_vminor = 2105409;
v_vminor_alt = 2113570;
}
}
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
if (v_c_minor == 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(0)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__goto_parsed_a_leaf_value__break;
}
v_stack_byte = (v_depth / 16);
v_stack_bit = ((v_depth & 15) * 2);
self->private_data.f_stack[v_stack_byte] &= (4294967295 ^ (((uint32_t)(3)) << v_stack_bit));
self->private_data.f_container_num_remaining[v_depth] = v_string_length;
v_depth += 1;
v_tagged = false;
goto label__outer__continue;
} else if (v_c_major == 5) {
if (WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor] == 0) {
goto label__goto_fail__break;
} else if (v_depth >= 1024) {
v_token_length = ((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor]));
while ((v_token_length > 0) && (iop_a_src > io1_a_src)) {
iop_a_src--;
v_token_length -= 1;
}
status = wuffs_base__make_status(wuffs_cbor__error__unsupported_recursion_depth);
goto exit;
}
v_vminor = 2113553;
v_vminor_alt = 2101314;
if (v_depth > 0) {
v_stack_byte = ((v_depth - 1) / 16);
v_stack_bit = (((v_depth - 1) & 15) * 2);
if (0 == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1)) << v_stack_bit))) {
v_vminor = 2113569;
v_vminor_alt = 2105410;
} else {
v_vminor = 2113601;
v_vminor_alt = 2113602;
}
}
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
if (v_c_minor == 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(0)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__goto_parsed_a_leaf_value__break;
}
v_stack_byte = (v_depth / 16);
v_stack_bit = ((v_depth & 15) * 2);
self->private_data.f_stack[v_stack_byte] |= (((uint32_t)(3)) << v_stack_bit);
self->private_data.f_container_num_remaining[v_depth] = v_string_length;
v_depth += 1;
v_tagged = false;
goto label__outer__continue;
} else if (v_c_major == 6) {
if (v_c_minor >= 28) {
goto label__goto_fail__break;
}
if (v_string_length < 262144) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(787997)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
(((uint64_t)((4194304 | ((uint32_t)(v_string_length))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
} else {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(787997)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
(((uint64_t)((4194304 | ((uint32_t)((v_string_length >> 46)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(0)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
*iop_a_dst++ = wuffs_base__make_token(
(~(v_string_length & 70368744177663) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) |
(((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
}
v_tagged = true;
goto label__outer__continue;
} else if (v_c_major == 7) {
if (v_c_minor < 20) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(787997)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
(((uint64_t)((8388608 | ((uint32_t)((v_string_length & 255)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__goto_parsed_a_leaf_value__break;
} else if (v_c_minor < 24) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(WUFFS_CBOR__LITERALS[(v_c_minor & 3)])) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__goto_parsed_a_leaf_value__break;
} else if (v_c_minor == 24) {
if (v_string_length < 24) {
if ( ! (iop_a_src > io1_a_src)) {
status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o);
goto exit;
}
iop_a_src--;
goto label__goto_fail__break;
}
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(787997)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) |
(((uint64_t)((8388608 | ((uint32_t)((v_string_length & 255)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(2)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__goto_parsed_a_leaf_value__break;
} else if (v_c_minor < 28) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(10490113)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__goto_parsed_a_leaf_value__break;
} else if (v_c_minor == 31) {
if (v_tagged || (v_depth <= 0)) {
goto label__goto_fail__break;
}
v_depth -= 1;
if (self->private_data.f_container_num_remaining[v_depth] != 0) {
goto label__goto_fail__break;
}
v_stack_byte = (v_depth / 16);
v_stack_bit = ((v_depth & 15) * 2);
v_stack_val = (3 & (self->private_data.f_stack[v_stack_byte] >> v_stack_bit));
if (v_stack_val == 1) {
goto label__goto_fail__break;
}
if (v_stack_val != 3) {
v_vminor_alt = 2097186;
} else {
v_vminor_alt = 2097218;
}
if (v_depth <= 0) {
v_vminor_alt |= 4096;
} else {
v_stack_byte = ((v_depth - 1) / 16);
v_stack_bit = (((v_depth - 1) & 15) * 2);
if (0 == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1)) << v_stack_bit))) {
v_vminor_alt |= 8192;
} else {
v_vminor_alt |= 16384;
}
}
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__goto_parsed_a_leaf_value__break;
}
}
goto label__goto_fail__break;
}
label__goto_fail__break:;
if (iop_a_src > io1_a_src) {
iop_a_src--;
status = wuffs_base__make_status(wuffs_cbor__error__bad_input);
goto exit;
}
status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o);
goto exit;
}
label__goto_parsed_a_leaf_value__break:;
v_tagged = false;
while (v_depth > 0) {
v_stack_byte = ((v_depth - 1) / 16);
v_stack_bit = (((v_depth - 1) & 15) * 2);
self->private_data.f_stack[v_stack_byte] ^= (((uint32_t)(1)) << (v_stack_bit + 1));
if (1 == (3 & (self->private_data.f_stack[v_stack_byte] >> v_stack_bit))) {
goto label__outer__continue;
}
if (self->private_data.f_container_num_remaining[(v_depth - 1)] <= 0) {
goto label__outer__continue;
}
self->private_data.f_container_num_remaining[(v_depth - 1)] -= 1;
if (self->private_data.f_container_num_remaining[(v_depth - 1)] > 0) {
goto label__outer__continue;
}
label__2__continue:;
while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
goto label__2__continue;
}
v_depth -= 1;
v_stack_byte = (v_depth / 16);
v_stack_bit = ((v_depth & 15) * 2);
if (0 == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1)) << v_stack_bit))) {
v_vminor_alt = 2097186;
} else {
v_vminor_alt = 2097218;
}
if (v_depth <= 0) {
v_vminor_alt |= 4096;
} else {
v_stack_byte = ((v_depth - 1) / 16);
v_stack_bit = (((v_depth - 1) & 15) * 2);
if (0 == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1)) << v_stack_bit))) {
v_vminor_alt |= 8192;
} else {
v_vminor_alt |= 16384;
}
}
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(0)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
}
goto label__outer__break;
}
label__outer__break:;
self->private_impl.f_end_of_data = true;
ok:
self->private_impl.p_decode_tokens[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_tokens[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
self->private_data.s_decode_tokens[0].v_string_length = v_string_length;
self->private_data.s_decode_tokens[0].v_depth = v_depth;
self->private_data.s_decode_tokens[0].v_tagged = v_tagged;
self->private_data.s_decode_tokens[0].v_indefinite_string_major_type = v_indefinite_string_major_type;
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32)
// ---------------- Status Codes Implementations
// ---------------- Private Consts
static const uint32_t
WUFFS_CRC32__IEEE_TABLE[16][256] WUFFS_BASE__POTENTIALLY_UNUSED = {
{
0, 1996959894, 3993919788, 2567524794, 124634137, 1886057615, 3915621685, 2657392035,
249268274, 2044508324, 3772115230, 2547177864, 162941995, 2125561021, 3887607047, 2428444049,
498536548, 1789927666, 4089016648, 2227061214, 450548861, 1843258603, 4107580753, 2211677639,
325883990, 1684777152, 4251122042, 2321926636, 335633487, 1661365465, 4195302755, 2366115317,
997073096, 1281953886, 3579855332, 2724688242, 1006888145, 1258607687, 3524101629, 2768942443,
901097722, 1119000684, 3686517206, 2898065728, 853044451, 1172266101, 3705015759, 2882616665,
651767980, 1373503546, 3369554304, 3218104598, 565507253, 1454621731, 3485111705, 3099436303,
671266974, 1594198024, 3322730930, 2970347812, 795835527, 1483230225, 3244367275, 3060149565,
1994146192, 31158534, 2563907772, 4023717930, 1907459465, 112637215, 2680153253, 3904427059,
2013776290, 251722036, 2517215374, 3775830040, 2137656763, 141376813, 2439277719, 3865271297,
1802195444, 476864866, 2238001368, 4066508878, 1812370925, 453092731, 2181625025, 4111451223,
1706088902, 314042704, 2344532202, 4240017532, 1658658271, 366619977, 2362670323, 4224994405,
1303535960, 984961486, 2747007092, 3569037538, 1256170817, 1037604311, 2765210733, 3554079995,
1131014506, 879679996, 2909243462, 3663771856, 1141124467, 855842277, 2852801631, 3708648649,
1342533948, 654459306, 3188396048, 3373015174, 1466479909, 544179635, 3110523913, 3462522015,
1591671054, 702138776, 2966460450, 3352799412, 1504918807, 783551873, 3082640443, 3233442989,
3988292384, 2596254646, 62317068, 1957810842, 3939845945, 2647816111, 81470997, 1943803523,
3814918930, 2489596804, 225274430, 2053790376, 3826175755, 2466906013, 167816743, 2097651377,
4027552580, 2265490386, 503444072, 1762050814, 4150417245, 2154129355, 426522225, 1852507879,
4275313526, 2312317920, 282753626, 1742555852, 4189708143, 2394877945, 397917763, 1622183637,
3604390888, 2714866558, 953729732, 1340076626, 3518719985, 2797360999, 1068828381, 1219638859,
3624741850, 2936675148, 906185462, 1090812512, 3747672003, 2825379669, 829329135, 1181335161,
3412177804, 3160834842, 628085408, 1382605366, 3423369109, 3138078467, 570562233, 1426400815,
3317316542, 2998733608, 733239954, 1555261956, 3268935591, 3050360625, 752459403, 1541320221,
2607071920, 3965973030, 1969922972, 40735498, 2617837225, 3943577151, 1913087877, 83908371,
2512341634, 3803740692, 2075208622, 213261112, 2463272603, 3855990285, 2094854071, 198958881,
2262029012, 4057260610, 1759359992, 534414190, 2176718541, 4139329115, 1873836001, 414664567,
2282248934, 4279200368, 1711684554, 285281116, 2405801727, 4167216745, 1634467795, 376229701,
2685067896, 3608007406, 1308918612, 956543938, 2808555105, 3495958263, 1231636301, 1047427035,
2932959818, 3654703836, 1088359270, 936918000, 2847714899, 3736837829, 1202900863, 817233897,
3183342108, 3401237130, 1404277552, 615818150, 3134207493, 3453421203, 1423857449, 601450431,
3009837614, 3294710456, 1567103746, 711928724, 3020668471, 3272380065, 1510334235, 755167117,
}, {
0, 421212481, 842424962, 724390851, 1684849924, 2105013317, 1448781702, 1329698503,
3369699848, 3519200073, 4210026634, 3824474571, 2897563404, 3048111693, 2659397006, 2274893007,
1254232657, 1406739216, 2029285587, 1643069842, 783210325, 934667796, 479770071, 92505238,
2182846553, 2600511768, 2955803355, 2838940570, 3866582365, 4285295644, 3561045983, 3445231262,
2508465314, 2359236067, 2813478432, 3198777185, 4058571174, 3908292839, 3286139684, 3670389349,
1566420650, 1145479147, 1869335592, 1987116393, 959540142, 539646703, 185010476, 303839341,
3745920755, 3327985586, 3983561841, 4100678960, 3140154359, 2721170102, 2300350837, 2416418868,
396344571, 243568058, 631889529, 1018359608, 1945336319, 1793607870, 1103436669, 1490954812,
4034481925, 3915546180, 3259968903, 3679722694, 2484439553, 2366552896, 2787371139, 3208174018,
950060301, 565965900, 177645455, 328046286, 1556873225, 1171730760, 1861902987, 2011255754,
3132841300, 2745199637, 2290958294, 2442530455, 3738671184, 3352078609, 3974232786, 4126854035,
1919080284, 1803150877, 1079293406, 1498383519, 370020952, 253043481, 607678682, 1025720731,
1711106983, 2095471334, 1472923941, 1322268772, 26324643, 411738082, 866634785, 717028704,
2904875439, 3024081134, 2668790573, 2248782444, 3376948395, 3495106026, 4219356713, 3798300520,
792689142, 908347575, 487136116, 68299317, 1263779058, 1380486579, 2036719216, 1618931505,
3890672638, 4278043327, 3587215740, 3435896893, 2206873338, 2593195963, 2981909624, 2829542713,
998479947, 580430090, 162921161, 279890824, 1609522511, 1190423566, 1842954189, 1958874764,
4082766403, 3930137346, 3245109441, 3631694208, 2536953671, 2385372678, 2768287173, 3155920004,
1900120602, 1750776667, 1131931800, 1517083097, 355290910, 204897887, 656092572, 1040194781,
3113746450, 2692952403, 2343461520, 2461357009, 3723805974, 3304059991, 4022511508, 4141455061,
2919742697, 3072101800, 2620513899, 2234183466, 3396041197, 3547351212, 4166851439, 3779471918,
1725839073, 2143618976, 1424512099, 1307796770, 45282277, 464110244, 813994343, 698327078,
3838160568, 4259225593, 3606301754, 3488152955, 2158586812, 2578602749, 2996767038, 2877569151,
740041904, 889656817, 506086962, 120682355, 1215357364, 1366020341, 2051441462, 1667084919,
3422213966, 3538019855, 4190942668, 3772220557, 2945847882, 3062702859, 2644537544, 2226864521,
52649286, 439905287, 823476164, 672009861, 1733269570, 2119477507, 1434057408, 1281543041,
2167981343, 2552493150, 3004082077, 2853541596, 3847487515, 4233048410, 3613549209, 3464057816,
1239502615, 1358593622, 2077699477, 1657543892, 764250643, 882293586, 532408465, 111204816,
1585378284, 1197851309, 1816695150, 1968414767, 974272232, 587794345, 136598634, 289367339,
2527558116, 2411481253, 2760973158, 3179948583, 4073438432, 3956313505, 3237863010, 3655790371,
347922877, 229101820, 646611775, 1066513022, 1892689081, 1774917112, 1122387515, 1543337850,
3697634229, 3313392372, 3998419255, 4148705398, 3087642289, 2702352368, 2319436851, 2468674930,
}, {
0, 29518391, 59036782, 38190681, 118073564, 114017003, 76381362, 89069189,
236147128, 265370511, 228034006, 206958561, 152762724, 148411219, 178138378, 190596925,
472294256, 501532999, 530741022, 509615401, 456068012, 451764635, 413917122, 426358261,
305525448, 334993663, 296822438, 275991697, 356276756, 352202787, 381193850, 393929805,
944588512, 965684439, 1003065998, 973863097, 1061482044, 1049003019, 1019230802, 1023561829,
912136024, 933002607, 903529270, 874031361, 827834244, 815125939, 852716522, 856752605,
611050896, 631869351, 669987326, 640506825, 593644876, 580921211, 551983394, 556069653,
712553512, 733666847, 704405574, 675154545, 762387700, 749958851, 787859610, 792175277,
1889177024, 1901651959, 1931368878, 1927033753, 2006131996, 1985040171, 1947726194, 1976933189,
2122964088, 2135668303, 2098006038, 2093965857, 2038461604, 2017599123, 2047123658, 2076625661,
1824272048, 1836991623, 1866005214, 1861914857, 1807058540, 1786244187, 1748062722, 1777547317,
1655668488, 1668093247, 1630251878, 1625932113, 1705433044, 1684323811, 1713505210, 1742760333,
1222101792, 1226154263, 1263738702, 1251046777, 1339974652, 1310460363, 1281013650, 1301863845,
1187289752, 1191637167, 1161842422, 1149379777, 1103966788, 1074747507, 1112139306, 1133218845,
1425107024, 1429406311, 1467333694, 1454888457, 1408811148, 1379576507, 1350309090, 1371438805,
1524775400, 1528845279, 1499917702, 1487177649, 1575719220, 1546255107, 1584350554, 1605185389,
3778354048, 3774312887, 3803303918, 3816007129, 3862737756, 3892238699, 3854067506, 3833203973,
4012263992, 4007927823, 3970080342, 3982554209, 3895452388, 3924658387, 3953866378, 3932773565,
4245928176, 4241609415, 4271336606, 4283762345, 4196012076, 4225268251, 4187931714, 4166823541,
4076923208, 4072833919, 4035198246, 4047918865, 4094247316, 4123732899, 4153251322, 4132437965,
3648544096, 3636082519, 3673983246, 3678331705, 3732010428, 3753090955, 3723829714, 3694611429,
3614117080, 3601426159, 3572488374, 3576541825, 3496125444, 3516976691, 3555094634, 3525581405,
3311336976, 3298595879, 3336186494, 3340255305, 3260503756, 3281337595, 3251864226, 3222399125,
3410866088, 3398419871, 3368647622, 3372945905, 3427010420, 3448139075, 3485520666, 3456284973,
2444203584, 2423127159, 2452308526, 2481530905, 2527477404, 2539934891, 2502093554, 2497740997,
2679949304, 2659102159, 2620920726, 2650438049, 2562027300, 2574714131, 2603727690, 2599670141,
2374579504, 2353749767, 2383274334, 2412743529, 2323684844, 2336421851, 2298759554, 2294686645,
2207933576, 2186809023, 2149495014, 2178734801, 2224278612, 2236720739, 2266437690, 2262135309,
2850214048, 2820717207, 2858812622, 2879680249, 2934667388, 2938704459, 2909776914, 2897069605,
2817622296, 2788420399, 2759153014, 2780249921, 2700618180, 2704950259, 2742877610, 2730399645,
3049550800, 3020298727, 3057690558, 3078802825, 2999835404, 3004150075, 2974355298, 2961925461,
3151438440, 3121956959, 3092510214, 3113327665, 3168701108, 3172786307, 3210370778, 3197646061,
}, {
0, 3099354981, 2852767883, 313896942, 2405603159, 937357362, 627793884, 2648127673,
3316918511, 2097696650, 1874714724, 3607201537, 1255587768, 4067088605, 3772741427, 1482887254,
1343838111, 3903140090, 4195393300, 1118632049, 3749429448, 1741137837, 1970407491, 3452858150,
2511175536, 756094997, 1067759611, 2266550430, 449832999, 2725482306, 2965774508, 142231497,
2687676222, 412010587, 171665333, 2995192016, 793786473, 2548850444, 2237264098, 1038456711,
1703315409, 3711623348, 3482275674, 1999841343, 3940814982, 1381529571, 1089329165, 4166106984,
4029413537, 1217896388, 1512189994, 3802027855, 2135519222, 3354724499, 3577784189, 1845280792,
899665998, 2367928107, 2677414085, 657096608, 3137160985, 37822588, 284462994, 2823350519,
2601801789, 598228824, 824021174, 2309093331, 343330666, 2898962447, 3195996129, 113467524,
1587572946, 3860600759, 4104763481, 1276501820, 3519211397, 1769898208, 2076913422, 3279374443,
3406630818, 1941006535, 1627703081, 3652755532, 1148164341, 4241751952, 3999682686, 1457141531,
247015245, 3053797416, 2763059142, 470583459, 2178658330, 963106687, 735213713, 2473467892,
992409347, 2207944806, 2435792776, 697522413, 3024379988, 217581361, 508405983, 2800865210,
4271038444, 1177467017, 1419450215, 3962007554, 1911572667, 3377213406, 3690561584, 1665525589,
1799331996, 3548628985, 3241568279, 2039091058, 3831314379, 1558270126, 1314193216, 4142438437,
2928380019, 372764438, 75645176, 3158189981, 568925988, 2572515393, 2346768303, 861712586,
3982079547, 1441124702, 1196457648, 4293663189, 1648042348, 3666298377, 3358779879, 1888390786,
686661332, 2421291441, 2196002399, 978858298, 2811169155, 523464422, 226935048, 3040519789,
3175145892, 100435649, 390670639, 2952089162, 841119475, 2325614998, 2553003640, 546822429,
2029308235, 3225988654, 3539796416, 1782671013, 4153826844, 1328167289, 1570739863, 3844338162,
1298864389, 4124540512, 3882013070, 1608431339, 3255406162, 2058742071, 1744848601, 3501990332,
2296328682, 811816591, 584513889, 2590678532, 129869501, 3204563416, 2914283062, 352848211,
494030490, 2781751807, 3078325777, 264757620, 2450577869, 715964072, 941166918, 2158327331,
3636881013, 1618608400, 1926213374, 3396585883, 1470427426, 4011365959, 4255988137, 1158766284,
1984818694, 3471935843, 3695453837, 1693991400, 4180638033, 1100160564, 1395044826, 3952793279,
3019491049, 189112716, 435162722, 2706139399, 1016811966, 2217162459, 2526189877, 774831696,
643086745, 2666061564, 2354934034, 887166583, 2838900430, 294275499, 54519365, 3145957664,
3823145334, 1532818963, 1240029693, 4048895640, 1820460577, 3560857924, 3331051178, 2117577167,
3598663992, 1858283101, 2088143283, 3301633750, 1495127663, 3785470218, 4078182116, 1269332353,
332098007, 2876706482, 3116540252, 25085497, 2628386432, 605395429, 916469259, 2384220526,
2254837415, 1054503362, 745528876, 2496903497, 151290352, 2981684885, 2735556987, 464596510,
1137851976, 4218313005, 3923506883, 1365741990, 3434129695, 1946996346, 1723425172, 3724871409,
}, {
0, 1029712304, 2059424608, 1201699536, 4118849216, 3370159984, 2403399072, 2988497936,
812665793, 219177585, 1253054625, 2010132753, 3320900865, 4170237105, 3207642721, 2186319825,
1625331586, 1568718386, 438355170, 658566482, 2506109250, 2818578674, 4020265506, 3535817618,
1351670851, 1844508147, 709922595, 389064339, 2769320579, 2557498163, 3754961379, 3803185235,
3250663172, 4238411444, 3137436772, 2254525908, 876710340, 153198708, 1317132964, 1944187668,
4054934725, 3436268917, 2339452837, 3054575125, 70369797, 961670069, 2129760613, 1133623509,
2703341702, 2621542710, 3689016294, 3867263574, 1419845190, 1774270454, 778128678, 318858390,
2438067015, 2888948471, 3952189479, 3606153623, 1691440519, 1504803895, 504432359, 594620247,
1492342857, 1704161785, 573770537, 525542041, 2910060169, 2417219385, 3618876905, 3939730521,
1753420680, 1440954936, 306397416, 790849880, 2634265928, 2690882808, 3888375336, 3668168600,
940822475, 91481723, 1121164459, 2142483739, 3448989963, 4042473659, 3075684971, 2318603227,
140739594, 889433530, 1923340138, 1338244826, 4259521226, 3229813626, 2267247018, 3124975642,
2570221389, 2756861693, 3824297005, 3734113693, 1823658381, 1372780605, 376603373, 722643805,
2839690380, 2485261628, 3548540908, 4007806556, 1556257356, 1638052860, 637716780, 459464860,
4191346895, 3300051327, 2199040943, 3195181599, 206718479, 825388991, 1989285231, 1274166495,
3382881038, 4106388158, 3009607790, 2382549470, 1008864718, 21111934, 1189240494, 2072147742,
2984685714, 2357631266, 3408323570, 4131834434, 1147541074, 2030452706, 1051084082, 63335554,
2174155603, 3170292451, 4216760371, 3325460867, 1947622803, 1232499747, 248909555, 867575619,
3506841360, 3966111392, 2881909872, 2527485376, 612794832, 434546784, 1581699760, 1663499008,
3782634705, 3692447073, 2612412337, 2799048193, 351717905, 697754529, 1849071985, 1398190273,
1881644950, 1296545318, 182963446, 931652934, 2242328918, 3100053734, 4284967478, 3255255942,
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101480190, 2645113489, 3929532513, 1905435662, 84561281, 2662269422, 3912356638, 1922342769,
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169122562, 2444351341, 3861841309, 2106214898, 152215677, 2461527058, 3844685538, 2123133581,
405920760, 2207553431, 4094313831, 1873742088, 456646791, 2157096168, 4144791064, 1823027831,
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1150152212, 3743982203, 2830528651, 856898788, 1200346475, 3694041348, 2880457716, 806684571,
1115789546, 3643069573, 2931426933, 891243034, 1099408277, 3659722746, 2914794762, 907637093,
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1510200173, 2274691816, 979330598, 3888758691, 2595928571, 1194090622, 4209380528, 661706037,
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3011398645, 1860735600, 3542286014, 246687547, 1942430051, 2924607718, 328963112, 3456978349,
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2691310871, 2113731730, 3224801372, 497043929, 1624461185, 3175454212, 9435850, 3709412175,
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342721485, 3388693064, 1949382278, 2846355203, 3570723163, 155332830, 3028835344, 1763607957,
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2803091512, 2055541181, 3343875443, 450471158, 1739236014, 3124525867, 133568485, 3663777376,
4245691221, 545702608, 2639048222, 1088059291, 1034514883, 3762268230, 1576387720, 2153979149,
501724348, 3228659001, 2109407735, 2687359090, 3713981994, 13109167, 3171052385, 1620357860,
1206151121, 2591211092, 666423962, 4197321503, 2271022407, 1523307714, 3875649548, 982999433,
2850034278, 1953942499, 3384583981, 338329256, 1767471344, 3033506165, 151375291, 3566408766,
4091789579, 779425934, 2478797888, 1311354309, 861580189, 4006375960, 1392910038, 2391852883,
2929327945, 1930372812, 3469036034, 324244359, 1847629279, 3015068762, 243015828, 3555391761,
4103744548, 688715169, 2496043375, 1229996266, 874727090, 3920994103, 1417671673, 2313759356,
446585235, 3339223062, 2059594968, 2807313757, 3660002053, 129100416, 3128657486, 1743609803,
1084066558, 2634765179, 549535669, 4250396208, 2149900392, 1571961325, 3765982499, 1039043750,
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0, 2635063670, 3782132909, 2086741467, 430739227, 2225303149, 4173482934, 1707977408,
861478454, 2924937024, 3526875803, 1329085421, 720736557, 3086643291, 3415954816, 1452586230,
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1441473114, 3370435372, 3028674295, 696911745, 1279765825, 3511176247, 2905172460, 807831706,
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2535537225, 170842943, 1984954084, 3946848146, 2391651666, 327308324, 1877176831, 4075589769,
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1763466407, 4094934481, 2289211402, 360544636, 1890636732, 3988730570, 2447251217, 215086695,
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3481914503, 1987188591, 1729068310, 3740575486, 1173727716, 4228805132, 3983743093, 1418249117,
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380632892, 3100077741, 2433735263, 1063734222, 3265180603, 1828069930, 1161729752, 3948283721,
2207997677, 770953084, 71007118, 2857626143, 1470763626, 4190274555, 3490330377, 2120394392,
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},
};
static const uint8_t
WUFFS_CRC32__IEEE_X86_SSE42_K1K2[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
212, 43, 68, 84, 1, 0, 0, 0,
150, 21, 228, 198, 1, 0, 0, 0,
};
static const uint8_t
WUFFS_CRC32__IEEE_X86_SSE42_K3K4[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
208, 151, 25, 117, 1, 0, 0, 0,
158, 0, 170, 204, 0, 0, 0, 0,
};
static const uint8_t
WUFFS_CRC32__IEEE_X86_SSE42_K5ZZ[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
36, 97, 205, 99, 1, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
};
static const uint8_t
WUFFS_CRC32__IEEE_X86_SSE42_PXMU[16] WUFFS_BASE__POTENTIALLY_UNUSED = {
65, 6, 113, 219, 1, 0, 0, 0,
65, 22, 1, 247, 1, 0, 0, 0,
};
// ---------------- Private Initializer Prototypes
// ---------------- Private Function Prototypes
static wuffs_base__empty_struct
wuffs_crc32__ieee_hasher__up(
wuffs_crc32__ieee_hasher* self,
wuffs_base__slice_u8 a_x);
static wuffs_base__empty_struct
wuffs_crc32__ieee_hasher__up__choosy_default(
wuffs_crc32__ieee_hasher* self,
wuffs_base__slice_u8 a_x);
#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
static wuffs_base__empty_struct
wuffs_crc32__ieee_hasher__up_arm_crc32(
wuffs_crc32__ieee_hasher* self,
wuffs_base__slice_u8 a_x);
#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
static wuffs_base__empty_struct
wuffs_crc32__ieee_hasher__up_x86_avx2(
wuffs_crc32__ieee_hasher* self,
wuffs_base__slice_u8 a_x);
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
static wuffs_base__empty_struct
wuffs_crc32__ieee_hasher__up_x86_sse42(
wuffs_crc32__ieee_hasher* self,
wuffs_base__slice_u8 a_x);
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// ---------------- VTables
const wuffs_base__hasher_u32__func_ptrs
wuffs_crc32__ieee_hasher__func_ptrs_for__wuffs_base__hasher_u32 = {
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_crc32__ieee_hasher__set_quirk_enabled),
(uint32_t(*)(void*,
wuffs_base__slice_u8))(&wuffs_crc32__ieee_hasher__update_u32),
};
// ---------------- Initializer Implementations
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_crc32__ieee_hasher__initialize(
wuffs_crc32__ieee_hasher* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options){
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (sizeof(*self) != sizeof_star_self) {
return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
}
if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
(((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
}
if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
// The whole point of this if-check is to detect an uninitialized *self.
// We disable the warning on GCC. Clang-5.0 does not have this warning.
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
if (self->private_impl.magic != 0) {
return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
}
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
} else {
if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
memset(self, 0, sizeof(*self));
options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
} else {
memset(&(self->private_impl), 0, sizeof(self->private_impl));
}
}
self->private_impl.choosy_up = &wuffs_crc32__ieee_hasher__up__choosy_default;
self->private_impl.magic = WUFFS_BASE__MAGIC;
self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name =
wuffs_base__hasher_u32__vtable_name;
self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers =
(const void*)(&wuffs_crc32__ieee_hasher__func_ptrs_for__wuffs_base__hasher_u32);
return wuffs_base__make_status(NULL);
}
wuffs_crc32__ieee_hasher*
wuffs_crc32__ieee_hasher__alloc() {
wuffs_crc32__ieee_hasher* x =
(wuffs_crc32__ieee_hasher*)(calloc(sizeof(wuffs_crc32__ieee_hasher), 1));
if (!x) {
return NULL;
}
if (wuffs_crc32__ieee_hasher__initialize(
x, sizeof(wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
free(x);
return NULL;
}
return x;
}
size_t
sizeof__wuffs_crc32__ieee_hasher() {
return sizeof(wuffs_crc32__ieee_hasher);
}
// ---------------- Function Implementations
// -------- func crc32.ieee_hasher.set_quirk_enabled
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_crc32__ieee_hasher__set_quirk_enabled(
wuffs_crc32__ieee_hasher* self,
uint32_t a_quirk,
bool a_enabled) {
return wuffs_base__make_empty_struct();
}
// -------- func crc32.ieee_hasher.update_u32
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_crc32__ieee_hasher__update_u32(
wuffs_crc32__ieee_hasher* self,
wuffs_base__slice_u8 a_x) {
if (!self) {
return 0;
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return 0;
}
if (self->private_impl.f_state == 0) {
self->private_impl.choosy_up = (
#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
wuffs_base__cpu_arch__have_arm_crc32() ? &wuffs_crc32__ieee_hasher__up_arm_crc32 :
#endif
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
wuffs_base__cpu_arch__have_x86_avx2() ? &wuffs_crc32__ieee_hasher__up_x86_avx2 :
#endif
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_crc32__ieee_hasher__up_x86_sse42 :
#endif
self->private_impl.choosy_up);
}
wuffs_crc32__ieee_hasher__up(self, a_x);
return self->private_impl.f_state;
}
// -------- func crc32.ieee_hasher.up
static wuffs_base__empty_struct
wuffs_crc32__ieee_hasher__up(
wuffs_crc32__ieee_hasher* self,
wuffs_base__slice_u8 a_x) {
return (*self->private_impl.choosy_up)(self, a_x);
}
static wuffs_base__empty_struct
wuffs_crc32__ieee_hasher__up__choosy_default(
wuffs_crc32__ieee_hasher* self,
wuffs_base__slice_u8 a_x) {
uint32_t v_s = 0;
wuffs_base__slice_u8 v_p = {0};
v_s = (4294967295 ^ self->private_impl.f_state);
{
wuffs_base__slice_u8 i_slice_p = a_x;
v_p.ptr = i_slice_p.ptr;
v_p.len = 16;
uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32);
while (v_p.ptr < i_end0_p) {
v_s ^= ((((uint32_t)(v_p.ptr[0])) << 0) |
(((uint32_t)(v_p.ptr[1])) << 8) |
(((uint32_t)(v_p.ptr[2])) << 16) |
(((uint32_t)(v_p.ptr[3])) << 24));
v_s = (WUFFS_CRC32__IEEE_TABLE[0][v_p.ptr[15]] ^
WUFFS_CRC32__IEEE_TABLE[1][v_p.ptr[14]] ^
WUFFS_CRC32__IEEE_TABLE[2][v_p.ptr[13]] ^
WUFFS_CRC32__IEEE_TABLE[3][v_p.ptr[12]] ^
WUFFS_CRC32__IEEE_TABLE[4][v_p.ptr[11]] ^
WUFFS_CRC32__IEEE_TABLE[5][v_p.ptr[10]] ^
WUFFS_CRC32__IEEE_TABLE[6][v_p.ptr[9]] ^
WUFFS_CRC32__IEEE_TABLE[7][v_p.ptr[8]] ^
WUFFS_CRC32__IEEE_TABLE[8][v_p.ptr[7]] ^
WUFFS_CRC32__IEEE_TABLE[9][v_p.ptr[6]] ^
WUFFS_CRC32__IEEE_TABLE[10][v_p.ptr[5]] ^
WUFFS_CRC32__IEEE_TABLE[11][v_p.ptr[4]] ^
WUFFS_CRC32__IEEE_TABLE[12][(255 & (v_s >> 24))] ^
WUFFS_CRC32__IEEE_TABLE[13][(255 & (v_s >> 16))] ^
WUFFS_CRC32__IEEE_TABLE[14][(255 & (v_s >> 8))] ^
WUFFS_CRC32__IEEE_TABLE[15][(255 & (v_s >> 0))]);
v_p.ptr += 16;
v_s ^= ((((uint32_t)(v_p.ptr[0])) << 0) |
(((uint32_t)(v_p.ptr[1])) << 8) |
(((uint32_t)(v_p.ptr[2])) << 16) |
(((uint32_t)(v_p.ptr[3])) << 24));
v_s = (WUFFS_CRC32__IEEE_TABLE[0][v_p.ptr[15]] ^
WUFFS_CRC32__IEEE_TABLE[1][v_p.ptr[14]] ^
WUFFS_CRC32__IEEE_TABLE[2][v_p.ptr[13]] ^
WUFFS_CRC32__IEEE_TABLE[3][v_p.ptr[12]] ^
WUFFS_CRC32__IEEE_TABLE[4][v_p.ptr[11]] ^
WUFFS_CRC32__IEEE_TABLE[5][v_p.ptr[10]] ^
WUFFS_CRC32__IEEE_TABLE[6][v_p.ptr[9]] ^
WUFFS_CRC32__IEEE_TABLE[7][v_p.ptr[8]] ^
WUFFS_CRC32__IEEE_TABLE[8][v_p.ptr[7]] ^
WUFFS_CRC32__IEEE_TABLE[9][v_p.ptr[6]] ^
WUFFS_CRC32__IEEE_TABLE[10][v_p.ptr[5]] ^
WUFFS_CRC32__IEEE_TABLE[11][v_p.ptr[4]] ^
WUFFS_CRC32__IEEE_TABLE[12][(255 & (v_s >> 24))] ^
WUFFS_CRC32__IEEE_TABLE[13][(255 & (v_s >> 16))] ^
WUFFS_CRC32__IEEE_TABLE[14][(255 & (v_s >> 8))] ^
WUFFS_CRC32__IEEE_TABLE[15][(255 & (v_s >> 0))]);
v_p.ptr += 16;
}
v_p.len = 16;
uint8_t* i_end1_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 16) * 16);
while (v_p.ptr < i_end1_p) {
v_s ^= ((((uint32_t)(v_p.ptr[0])) << 0) |
(((uint32_t)(v_p.ptr[1])) << 8) |
(((uint32_t)(v_p.ptr[2])) << 16) |
(((uint32_t)(v_p.ptr[3])) << 24));
v_s = (WUFFS_CRC32__IEEE_TABLE[0][v_p.ptr[15]] ^
WUFFS_CRC32__IEEE_TABLE[1][v_p.ptr[14]] ^
WUFFS_CRC32__IEEE_TABLE[2][v_p.ptr[13]] ^
WUFFS_CRC32__IEEE_TABLE[3][v_p.ptr[12]] ^
WUFFS_CRC32__IEEE_TABLE[4][v_p.ptr[11]] ^
WUFFS_CRC32__IEEE_TABLE[5][v_p.ptr[10]] ^
WUFFS_CRC32__IEEE_TABLE[6][v_p.ptr[9]] ^
WUFFS_CRC32__IEEE_TABLE[7][v_p.ptr[8]] ^
WUFFS_CRC32__IEEE_TABLE[8][v_p.ptr[7]] ^
WUFFS_CRC32__IEEE_TABLE[9][v_p.ptr[6]] ^
WUFFS_CRC32__IEEE_TABLE[10][v_p.ptr[5]] ^
WUFFS_CRC32__IEEE_TABLE[11][v_p.ptr[4]] ^
WUFFS_CRC32__IEEE_TABLE[12][(255 & (v_s >> 24))] ^
WUFFS_CRC32__IEEE_TABLE[13][(255 & (v_s >> 16))] ^
WUFFS_CRC32__IEEE_TABLE[14][(255 & (v_s >> 8))] ^
WUFFS_CRC32__IEEE_TABLE[15][(255 & (v_s >> 0))]);
v_p.ptr += 16;
}
v_p.len = 1;
uint8_t* i_end2_p = i_slice_p.ptr + i_slice_p.len;
while (v_p.ptr < i_end2_p) {
v_s = (WUFFS_CRC32__IEEE_TABLE[0][(((uint8_t)((v_s & 255))) ^ v_p.ptr[0])] ^ (v_s >> 8));
v_p.ptr += 1;
}
v_p.len = 0;
}
self->private_impl.f_state = (4294967295 ^ v_s);
return wuffs_base__make_empty_struct();
}
// โ€ผ WUFFS MULTI-FILE SECTION +arm_crc32
// -------- func crc32.ieee_hasher.up_arm_crc32
#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
static wuffs_base__empty_struct
wuffs_crc32__ieee_hasher__up_arm_crc32(
wuffs_crc32__ieee_hasher* self,
wuffs_base__slice_u8 a_x) {
wuffs_base__slice_u8 v_p = {0};
uint32_t v_s = 0;
v_s = (4294967295 ^ self->private_impl.f_state);
while ((((uint64_t)(a_x.len)) > 0) && ((15 & ((uint32_t)(0xFFF & (uintptr_t)(a_x.ptr)))) != 0)) {
v_s = __crc32b(v_s, a_x.ptr[0]);
a_x = wuffs_base__slice_u8__subslice_i(a_x, 1);
}
{
wuffs_base__slice_u8 i_slice_p = a_x;
v_p.ptr = i_slice_p.ptr;
v_p.len = 8;
uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 128) * 128);
while (v_p.ptr < i_end0_p) {
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
}
v_p.len = 8;
uint8_t* i_end1_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8);
while (v_p.ptr < i_end1_p) {
v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr));
v_p.ptr += 8;
}
v_p.len = 1;
uint8_t* i_end2_p = i_slice_p.ptr + i_slice_p.len;
while (v_p.ptr < i_end2_p) {
v_s = __crc32b(v_s, v_p.ptr[0]);
v_p.ptr += 1;
}
v_p.len = 0;
}
self->private_impl.f_state = (4294967295 ^ v_s);
return wuffs_base__make_empty_struct();
}
#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32)
// โ€ผ WUFFS MULTI-FILE SECTION -arm_crc32
// โ€ผ WUFFS MULTI-FILE SECTION +x86_avx2
// -------- func crc32.ieee_hasher.up_x86_avx2
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2")
static wuffs_base__empty_struct
wuffs_crc32__ieee_hasher__up_x86_avx2(
wuffs_crc32__ieee_hasher* self,
wuffs_base__slice_u8 a_x) {
uint32_t v_s = 0;
wuffs_base__slice_u8 v_p = {0};
__m128i v_k = {0};
__m128i v_x0 = {0};
__m128i v_x1 = {0};
__m128i v_x2 = {0};
__m128i v_x3 = {0};
__m128i v_y0 = {0};
__m128i v_y1 = {0};
__m128i v_y2 = {0};
__m128i v_y3 = {0};
uint64_t v_tail_index = 0;
v_s = (4294967295 ^ self->private_impl.f_state);
while ((((uint64_t)(a_x.len)) > 0) && ((15 & ((uint32_t)(0xFFF & (uintptr_t)(a_x.ptr)))) != 0)) {
v_s = (WUFFS_CRC32__IEEE_TABLE[0][(((uint8_t)((v_s & 255))) ^ a_x.ptr[0])] ^ (v_s >> 8));
a_x = wuffs_base__slice_u8__subslice_i(a_x, 1);
}
if (((uint64_t)(a_x.len)) < 64) {
{
wuffs_base__slice_u8 i_slice_p = a_x;
v_p.ptr = i_slice_p.ptr;
v_p.len = 1;
uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
while (v_p.ptr < i_end0_p) {
v_s = (WUFFS_CRC32__IEEE_TABLE[0][(((uint8_t)((v_s & 255))) ^ v_p.ptr[0])] ^ (v_s >> 8));
v_p.ptr += 1;
}
v_p.len = 0;
}
self->private_impl.f_state = (4294967295 ^ v_s);
return wuffs_base__make_empty_struct();
}
v_x0 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0));
v_x1 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16));
v_x2 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32));
v_x3 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48));
v_x0 = _mm_xor_si128(v_x0, _mm_cvtsi32_si128((int32_t)(v_s)));
v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K1K2));
{
wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, 64);
v_p.ptr = i_slice_p.ptr;
v_p.len = 64;
uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 64) * 64);
while (v_p.ptr < i_end0_p) {
v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0));
v_y1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0));
v_y2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(0));
v_y3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(0));
v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17));
v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(17));
v_x2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(17));
v_x3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(17));
v_x0 = _mm_xor_si128(_mm_xor_si128(v_x0, v_y0), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 0)));
v_x1 = _mm_xor_si128(_mm_xor_si128(v_x1, v_y1), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16)));
v_x2 = _mm_xor_si128(_mm_xor_si128(v_x2, v_y2), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 32)));
v_x3 = _mm_xor_si128(_mm_xor_si128(v_x3, v_y3), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 48)));
v_p.ptr += 64;
}
v_p.len = 0;
}
v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K3K4));
v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0));
v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17));
v_x0 = _mm_xor_si128(v_x0, v_x1);
v_x0 = _mm_xor_si128(v_x0, v_y0);
v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0));
v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17));
v_x0 = _mm_xor_si128(v_x0, v_x2);
v_x0 = _mm_xor_si128(v_x0, v_y0);
v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0));
v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17));
v_x0 = _mm_xor_si128(v_x0, v_x3);
v_x0 = _mm_xor_si128(v_x0, v_y0);
v_x1 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(16));
v_x2 = _mm_set_epi32((int32_t)(0), (int32_t)(4294967295), (int32_t)(0), (int32_t)(4294967295));
v_x0 = _mm_srli_si128(v_x0, (int32_t)(8));
v_x0 = _mm_xor_si128(v_x0, v_x1);
v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K5ZZ));
v_x1 = _mm_srli_si128(v_x0, (int32_t)(4));
v_x0 = _mm_and_si128(v_x0, v_x2);
v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0));
v_x0 = _mm_xor_si128(v_x0, v_x1);
v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_PXMU));
v_x1 = _mm_and_si128(v_x0, v_x2);
v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(16));
v_x1 = _mm_and_si128(v_x1, v_x2);
v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0));
v_x0 = _mm_xor_si128(v_x0, v_x1);
v_s = ((uint32_t)(_mm_extract_epi32(v_x0, (int32_t)(1))));
v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551552u);
if (v_tail_index < ((uint64_t)(a_x.len))) {
{
wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
v_p.ptr = i_slice_p.ptr;
v_p.len = 1;
uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
while (v_p.ptr < i_end0_p) {
v_s = (WUFFS_CRC32__IEEE_TABLE[0][(((uint8_t)((v_s & 255))) ^ v_p.ptr[0])] ^ (v_s >> 8));
v_p.ptr += 1;
}
v_p.len = 0;
}
}
self->private_impl.f_state = (4294967295 ^ v_s);
return wuffs_base__make_empty_struct();
}
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// โ€ผ WUFFS MULTI-FILE SECTION -x86_avx2
// โ€ผ WUFFS MULTI-FILE SECTION +x86_sse42
// -------- func crc32.ieee_hasher.up_x86_sse42
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
static wuffs_base__empty_struct
wuffs_crc32__ieee_hasher__up_x86_sse42(
wuffs_crc32__ieee_hasher* self,
wuffs_base__slice_u8 a_x) {
uint32_t v_s = 0;
wuffs_base__slice_u8 v_p = {0};
__m128i v_k = {0};
__m128i v_x0 = {0};
__m128i v_x1 = {0};
__m128i v_x2 = {0};
__m128i v_x3 = {0};
__m128i v_y0 = {0};
__m128i v_y1 = {0};
__m128i v_y2 = {0};
__m128i v_y3 = {0};
uint64_t v_tail_index = 0;
v_s = (4294967295 ^ self->private_impl.f_state);
while ((((uint64_t)(a_x.len)) > 0) && ((15 & ((uint32_t)(0xFFF & (uintptr_t)(a_x.ptr)))) != 0)) {
v_s = (WUFFS_CRC32__IEEE_TABLE[0][(((uint8_t)((v_s & 255))) ^ a_x.ptr[0])] ^ (v_s >> 8));
a_x = wuffs_base__slice_u8__subslice_i(a_x, 1);
}
if (((uint64_t)(a_x.len)) < 64) {
{
wuffs_base__slice_u8 i_slice_p = a_x;
v_p.ptr = i_slice_p.ptr;
v_p.len = 1;
uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
while (v_p.ptr < i_end0_p) {
v_s = (WUFFS_CRC32__IEEE_TABLE[0][(((uint8_t)((v_s & 255))) ^ v_p.ptr[0])] ^ (v_s >> 8));
v_p.ptr += 1;
}
v_p.len = 0;
}
self->private_impl.f_state = (4294967295 ^ v_s);
return wuffs_base__make_empty_struct();
}
v_x0 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0));
v_x1 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16));
v_x2 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32));
v_x3 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48));
v_x0 = _mm_xor_si128(v_x0, _mm_cvtsi32_si128((int32_t)(v_s)));
v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K1K2));
{
wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, 64);
v_p.ptr = i_slice_p.ptr;
v_p.len = 64;
uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 64) * 64);
while (v_p.ptr < i_end0_p) {
v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0));
v_y1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0));
v_y2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(0));
v_y3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(0));
v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17));
v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(17));
v_x2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(17));
v_x3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(17));
v_x0 = _mm_xor_si128(_mm_xor_si128(v_x0, v_y0), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 0)));
v_x1 = _mm_xor_si128(_mm_xor_si128(v_x1, v_y1), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16)));
v_x2 = _mm_xor_si128(_mm_xor_si128(v_x2, v_y2), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 32)));
v_x3 = _mm_xor_si128(_mm_xor_si128(v_x3, v_y3), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 48)));
v_p.ptr += 64;
}
v_p.len = 0;
}
v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K3K4));
v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0));
v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17));
v_x0 = _mm_xor_si128(v_x0, v_x1);
v_x0 = _mm_xor_si128(v_x0, v_y0);
v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0));
v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17));
v_x0 = _mm_xor_si128(v_x0, v_x2);
v_x0 = _mm_xor_si128(v_x0, v_y0);
v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0));
v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17));
v_x0 = _mm_xor_si128(v_x0, v_x3);
v_x0 = _mm_xor_si128(v_x0, v_y0);
v_x1 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(16));
v_x2 = _mm_set_epi32((int32_t)(0), (int32_t)(4294967295), (int32_t)(0), (int32_t)(4294967295));
v_x0 = _mm_srli_si128(v_x0, (int32_t)(8));
v_x0 = _mm_xor_si128(v_x0, v_x1);
v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K5ZZ));
v_x1 = _mm_srli_si128(v_x0, (int32_t)(4));
v_x0 = _mm_and_si128(v_x0, v_x2);
v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0));
v_x0 = _mm_xor_si128(v_x0, v_x1);
v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_PXMU));
v_x1 = _mm_and_si128(v_x0, v_x2);
v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(16));
v_x1 = _mm_and_si128(v_x1, v_x2);
v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0));
v_x0 = _mm_xor_si128(v_x0, v_x1);
v_s = ((uint32_t)(_mm_extract_epi32(v_x0, (int32_t)(1))));
v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551552u);
if (v_tail_index < ((uint64_t)(a_x.len))) {
{
wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index);
v_p.ptr = i_slice_p.ptr;
v_p.len = 1;
uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len;
while (v_p.ptr < i_end0_p) {
v_s = (WUFFS_CRC32__IEEE_TABLE[0][(((uint8_t)((v_s & 255))) ^ v_p.ptr[0])] ^ (v_s >> 8));
v_p.ptr += 1;
}
v_p.len = 0;
}
}
self->private_impl.f_state = (4294967295 ^ v_s);
return wuffs_base__make_empty_struct();
}
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// โ€ผ WUFFS MULTI-FILE SECTION -x86_sse42
#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE)
// ---------------- Status Codes Implementations
const char wuffs_deflate__error__bad_huffman_code_over_subscribed[] = "#deflate: bad Huffman code (over-subscribed)";
const char wuffs_deflate__error__bad_huffman_code_under_subscribed[] = "#deflate: bad Huffman code (under-subscribed)";
const char wuffs_deflate__error__bad_huffman_code_length_count[] = "#deflate: bad Huffman code length count";
const char wuffs_deflate__error__bad_huffman_code_length_repetition[] = "#deflate: bad Huffman code length repetition";
const char wuffs_deflate__error__bad_huffman_code[] = "#deflate: bad Huffman code";
const char wuffs_deflate__error__bad_huffman_minimum_code_length[] = "#deflate: bad Huffman minimum code length";
const char wuffs_deflate__error__bad_block[] = "#deflate: bad block";
const char wuffs_deflate__error__bad_distance[] = "#deflate: bad distance";
const char wuffs_deflate__error__bad_distance_code_count[] = "#deflate: bad distance code count";
const char wuffs_deflate__error__bad_literal_length_code_count[] = "#deflate: bad literal/length code count";
const char wuffs_deflate__error__inconsistent_stored_block_length[] = "#deflate: inconsistent stored block length";
const char wuffs_deflate__error__missing_end_of_block_code[] = "#deflate: missing end-of-block code";
const char wuffs_deflate__error__no_huffman_codes[] = "#deflate: no Huffman codes";
const char wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state[] = "#deflate: internal error: inconsistent Huffman decoder state";
const char wuffs_deflate__error__internal_error_inconsistent_i_o[] = "#deflate: internal error: inconsistent I/O";
const char wuffs_deflate__error__internal_error_inconsistent_distance[] = "#deflate: internal error: inconsistent distance";
const char wuffs_deflate__error__internal_error_inconsistent_n_bits[] = "#deflate: internal error: inconsistent n_bits";
// ---------------- Private Consts
static const uint8_t
WUFFS_DEFLATE__CODE_ORDER[19] WUFFS_BASE__POTENTIALLY_UNUSED = {
16, 17, 18, 0, 8, 7, 9, 6,
10, 5, 11, 4, 12, 3, 13, 2,
14, 1, 15,
};
static const uint8_t
WUFFS_DEFLATE__REVERSE8[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
0, 128, 64, 192, 32, 160, 96, 224,
16, 144, 80, 208, 48, 176, 112, 240,
8, 136, 72, 200, 40, 168, 104, 232,
24, 152, 88, 216, 56, 184, 120, 248,
4, 132, 68, 196, 36, 164, 100, 228,
20, 148, 84, 212, 52, 180, 116, 244,
12, 140, 76, 204, 44, 172, 108, 236,
28, 156, 92, 220, 60, 188, 124, 252,
2, 130, 66, 194, 34, 162, 98, 226,
18, 146, 82, 210, 50, 178, 114, 242,
10, 138, 74, 202, 42, 170, 106, 234,
26, 154, 90, 218, 58, 186, 122, 250,
6, 134, 70, 198, 38, 166, 102, 230,
22, 150, 86, 214, 54, 182, 118, 246,
14, 142, 78, 206, 46, 174, 110, 238,
30, 158, 94, 222, 62, 190, 126, 254,
1, 129, 65, 193, 33, 161, 97, 225,
17, 145, 81, 209, 49, 177, 113, 241,
9, 137, 73, 201, 41, 169, 105, 233,
25, 153, 89, 217, 57, 185, 121, 249,
5, 133, 69, 197, 37, 165, 101, 229,
21, 149, 85, 213, 53, 181, 117, 245,
13, 141, 77, 205, 45, 173, 109, 237,
29, 157, 93, 221, 61, 189, 125, 253,
3, 131, 67, 195, 35, 163, 99, 227,
19, 147, 83, 211, 51, 179, 115, 243,
11, 139, 75, 203, 43, 171, 107, 235,
27, 155, 91, 219, 59, 187, 123, 251,
7, 135, 71, 199, 39, 167, 103, 231,
23, 151, 87, 215, 55, 183, 119, 247,
15, 143, 79, 207, 47, 175, 111, 239,
31, 159, 95, 223, 63, 191, 127, 255,
};
static const uint32_t
WUFFS_DEFLATE__LCODE_MAGIC_NUMBERS[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
1073741824, 1073742080, 1073742336, 1073742592, 1073742848, 1073743104, 1073743360, 1073743616,
1073743888, 1073744400, 1073744912, 1073745424, 1073745952, 1073746976, 1073748000, 1073749024,
1073750064, 1073752112, 1073754160, 1073756208, 1073758272, 1073762368, 1073766464, 1073770560,
1073774672, 1073782864, 1073791056, 1073799248, 1073807104, 134217728, 134217728, 134217728,
};
static const uint32_t
WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[32] WUFFS_BASE__POTENTIALLY_UNUSED = {
1073741824, 1073742080, 1073742336, 1073742592, 1073742864, 1073743376, 1073743904, 1073744928,
1073745968, 1073748016, 1073750080, 1073754176, 1073758288, 1073766480, 1073774688, 1073791072,
1073807472, 1073840240, 1073873024, 1073938560, 1074004112, 1074135184, 1074266272, 1074528416,
1074790576, 1075314864, 1075839168, 1076887744, 1077936336, 1080033488, 134217728, 134217728,
};
#define WUFFS_DEFLATE__HUFFS_TABLE_SIZE 1024
#define WUFFS_DEFLATE__HUFFS_TABLE_MASK 1023
// ---------------- Private Initializer Prototypes
// ---------------- Private Function Prototypes
static wuffs_base__status
wuffs_deflate__decoder__decode_blocks(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_deflate__decoder__decode_uncompressed(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_deflate__decoder__init_fixed_huffman(
wuffs_deflate__decoder* self);
static wuffs_base__status
wuffs_deflate__decoder__init_dynamic_huffman(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_deflate__decoder__init_huff(
wuffs_deflate__decoder* self,
uint32_t a_which,
uint32_t a_n_codes0,
uint32_t a_n_codes1,
uint32_t a_base_symbol);
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
static wuffs_base__status
wuffs_deflate__decoder__decode_huffman_bmi2(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src);
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
static wuffs_base__status
wuffs_deflate__decoder__decode_huffman_fast32(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_deflate__decoder__decode_huffman_fast64(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_deflate__decoder__decode_huffman_fast64__choosy_default(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_deflate__decoder__decode_huffman_slow(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src);
// ---------------- VTables
const wuffs_base__io_transformer__func_ptrs
wuffs_deflate__decoder__func_ptrs_for__wuffs_base__io_transformer = {
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_deflate__decoder__set_quirk_enabled),
(wuffs_base__status(*)(void*,
wuffs_base__io_buffer*,
wuffs_base__io_buffer*,
wuffs_base__slice_u8))(&wuffs_deflate__decoder__transform_io),
(wuffs_base__range_ii_u64(*)(const void*))(&wuffs_deflate__decoder__workbuf_len),
};
// ---------------- Initializer Implementations
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_deflate__decoder__initialize(
wuffs_deflate__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options){
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (sizeof(*self) != sizeof_star_self) {
return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
}
if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
(((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
}
if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
// The whole point of this if-check is to detect an uninitialized *self.
// We disable the warning on GCC. Clang-5.0 does not have this warning.
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
if (self->private_impl.magic != 0) {
return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
}
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
} else {
if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
memset(self, 0, sizeof(*self));
options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
} else {
memset(&(self->private_impl), 0, sizeof(self->private_impl));
}
}
self->private_impl.choosy_decode_huffman_fast64 = &wuffs_deflate__decoder__decode_huffman_fast64__choosy_default;
self->private_impl.magic = WUFFS_BASE__MAGIC;
self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
wuffs_base__io_transformer__vtable_name;
self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
(const void*)(&wuffs_deflate__decoder__func_ptrs_for__wuffs_base__io_transformer);
return wuffs_base__make_status(NULL);
}
wuffs_deflate__decoder*
wuffs_deflate__decoder__alloc() {
wuffs_deflate__decoder* x =
(wuffs_deflate__decoder*)(calloc(sizeof(wuffs_deflate__decoder), 1));
if (!x) {
return NULL;
}
if (wuffs_deflate__decoder__initialize(
x, sizeof(wuffs_deflate__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
free(x);
return NULL;
}
return x;
}
size_t
sizeof__wuffs_deflate__decoder() {
return sizeof(wuffs_deflate__decoder);
}
// ---------------- Function Implementations
// -------- func deflate.decoder.add_history
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_deflate__decoder__add_history(
wuffs_deflate__decoder* self,
wuffs_base__slice_u8 a_hist) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
wuffs_base__slice_u8 v_s = {0};
uint64_t v_n_copied = 0;
uint32_t v_already_full = 0;
v_s = a_hist;
if (((uint64_t)(v_s.len)) >= 32768) {
v_s = wuffs_base__slice_u8__suffix(v_s, 32768);
wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_history, 32768), v_s);
self->private_impl.f_history_index = 32768;
} else {
v_n_copied = wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_history, (self->private_impl.f_history_index & 32767), 32768), v_s);
if (v_n_copied < ((uint64_t)(v_s.len))) {
v_s = wuffs_base__slice_u8__subslice_i(v_s, v_n_copied);
v_n_copied = wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_history, 32768), v_s);
self->private_impl.f_history_index = (((uint32_t)((v_n_copied & 32767))) + 32768);
} else {
v_already_full = 0;
if (self->private_impl.f_history_index >= 32768) {
v_already_full = 32768;
}
self->private_impl.f_history_index = ((self->private_impl.f_history_index & 32767) + ((uint32_t)((v_n_copied & 32767))) + v_already_full);
}
}
wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_history, 32768, 33025), wuffs_base__make_slice_u8(self->private_data.f_history, 33025));
return wuffs_base__make_empty_struct();
}
// -------- func deflate.decoder.set_quirk_enabled
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_deflate__decoder__set_quirk_enabled(
wuffs_deflate__decoder* self,
uint32_t a_quirk,
bool a_enabled) {
return wuffs_base__make_empty_struct();
}
// -------- func deflate.decoder.workbuf_len
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_deflate__decoder__workbuf_len(
const wuffs_deflate__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
return wuffs_base__utility__make_range_ii_u64(1, 1);
}
// -------- func deflate.decoder.transform_io
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_deflate__decoder__transform_io(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 1)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint64_t v_mark = 0;
wuffs_base__status v_status = wuffs_base__make_status(NULL);
uint8_t* iop_a_dst = NULL;
uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
uint32_t coro_susp_point = self->private_impl.p_transform_io[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
self->private_impl.choosy_decode_huffman_fast64 = (
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
wuffs_base__cpu_arch__have_x86_bmi2() ? &wuffs_deflate__decoder__decode_huffman_bmi2 :
#endif
self->private_impl.choosy_decode_huffman_fast64);
while (true) {
v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
{
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
wuffs_base__status t_0 = wuffs_deflate__decoder__decode_blocks(self, a_dst, a_src);
v_status = t_0;
if (a_dst) {
iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
}
}
if ( ! wuffs_base__status__is_suspension(&v_status)) {
status = v_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
}
wuffs_base__u64__sat_add_indirect(&self->private_impl.f_transformed_history_count, wuffs_base__io__count_since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst))));
wuffs_deflate__decoder__add_history(self, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
status = v_status;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
}
ok:
self->private_impl.p_transform_io[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func deflate.decoder.decode_blocks
static wuffs_base__status
wuffs_deflate__decoder__decode_blocks(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_final = 0;
uint32_t v_b0 = 0;
uint32_t v_type = 0;
wuffs_base__status v_status = wuffs_base__make_status(NULL);
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_blocks[0];
if (coro_susp_point) {
v_final = self->private_data.s_decode_blocks[0].v_final;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
label__outer__continue:;
while (v_final == 0) {
while (self->private_impl.f_n_bits < 3) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint32_t t_0 = *iop_a_src++;
v_b0 = t_0;
}
self->private_impl.f_bits |= (v_b0 << (self->private_impl.f_n_bits & 3));
self->private_impl.f_n_bits = ((self->private_impl.f_n_bits & 3) + 8);
}
v_final = (self->private_impl.f_bits & 1);
v_type = ((self->private_impl.f_bits >> 1) & 3);
self->private_impl.f_bits >>= 3;
self->private_impl.f_n_bits -= 3;
if (v_type == 0) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
status = wuffs_deflate__decoder__decode_uncompressed(self, a_dst, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
goto label__outer__continue;
} else if (v_type == 1) {
v_status = wuffs_deflate__decoder__init_fixed_huffman(self);
if ( ! wuffs_base__status__is_ok(&v_status)) {
status = v_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
}
} else if (v_type == 2) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
status = wuffs_deflate__decoder__init_dynamic_huffman(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
} else {
status = wuffs_base__make_status(wuffs_deflate__error__bad_block);
goto exit;
}
self->private_impl.f_end_of_block = false;
while (true) {
if (sizeof(void*) == 4) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
v_status = wuffs_deflate__decoder__decode_huffman_fast32(self, a_dst, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
} else {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
v_status = wuffs_deflate__decoder__decode_huffman_fast64(self, a_dst, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
}
if (wuffs_base__status__is_error(&v_status)) {
status = v_status;
goto exit;
}
if (self->private_impl.f_end_of_block) {
goto label__outer__continue;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
status = wuffs_deflate__decoder__decode_huffman_slow(self, a_dst, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
if (self->private_impl.f_end_of_block) {
goto label__outer__continue;
}
}
}
ok:
self->private_impl.p_decode_blocks[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_blocks[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_decode_blocks[0].v_final = v_final;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func deflate.decoder.decode_uncompressed
static wuffs_base__status
wuffs_deflate__decoder__decode_uncompressed(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_length = 0;
uint32_t v_n_copied = 0;
uint8_t* iop_a_dst = NULL;
uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_uncompressed[0];
if (coro_susp_point) {
v_length = self->private_data.s_decode_uncompressed[0].v_length;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7)) != 0)) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
goto exit;
}
self->private_impl.f_n_bits = 0;
self->private_impl.f_bits = 0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint32_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_uncompressed[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_uncompressed[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
if (num_bits_0 == 24) {
t_0 = ((uint32_t)(*scratch));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0)) << 56;
}
}
v_length = t_0;
}
if ((((v_length) & 0xFFFF) + ((v_length) >> (32 - (16)))) != 65535) {
status = wuffs_base__make_status(wuffs_deflate__error__inconsistent_stored_block_length);
goto exit;
}
v_length = ((v_length) & 0xFFFF);
while (true) {
v_n_copied = wuffs_base__io_writer__limited_copy_u32_from_reader(
&iop_a_dst, io2_a_dst,v_length, &iop_a_src, io2_a_src);
if (v_length <= v_n_copied) {
status = wuffs_base__make_status(NULL);
goto ok;
}
v_length -= v_n_copied;
if (((uint64_t)(io2_a_dst - iop_a_dst)) == 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
} else {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
}
}
ok:
self->private_impl.p_decode_uncompressed[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_uncompressed[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_decode_uncompressed[0].v_length = v_length;
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func deflate.decoder.init_fixed_huffman
static wuffs_base__status
wuffs_deflate__decoder__init_fixed_huffman(
wuffs_deflate__decoder* self) {
uint32_t v_i = 0;
wuffs_base__status v_status = wuffs_base__make_status(NULL);
while (v_i < 144) {
self->private_data.f_code_lengths[v_i] = 8;
v_i += 1;
}
while (v_i < 256) {
self->private_data.f_code_lengths[v_i] = 9;
v_i += 1;
}
while (v_i < 280) {
self->private_data.f_code_lengths[v_i] = 7;
v_i += 1;
}
while (v_i < 288) {
self->private_data.f_code_lengths[v_i] = 8;
v_i += 1;
}
while (v_i < 320) {
self->private_data.f_code_lengths[v_i] = 5;
v_i += 1;
}
v_status = wuffs_deflate__decoder__init_huff(self,
0,
0,
288,
257);
if (wuffs_base__status__is_error(&v_status)) {
return v_status;
}
v_status = wuffs_deflate__decoder__init_huff(self,
1,
288,
320,
0);
if (wuffs_base__status__is_error(&v_status)) {
return v_status;
}
return wuffs_base__make_status(NULL);
}
// -------- func deflate.decoder.init_dynamic_huffman
static wuffs_base__status
wuffs_deflate__decoder__init_dynamic_huffman(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_bits = 0;
uint32_t v_n_bits = 0;
uint32_t v_b0 = 0;
uint32_t v_n_lit = 0;
uint32_t v_n_dist = 0;
uint32_t v_n_clen = 0;
uint32_t v_i = 0;
uint32_t v_b1 = 0;
wuffs_base__status v_status = wuffs_base__make_status(NULL);
uint32_t v_mask = 0;
uint32_t v_table_entry = 0;
uint32_t v_table_entry_n_bits = 0;
uint32_t v_b2 = 0;
uint32_t v_n_extra_bits = 0;
uint8_t v_rep_symbol = 0;
uint32_t v_rep_count = 0;
uint32_t v_b3 = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_init_dynamic_huffman[0];
if (coro_susp_point) {
v_bits = self->private_data.s_init_dynamic_huffman[0].v_bits;
v_n_bits = self->private_data.s_init_dynamic_huffman[0].v_n_bits;
v_n_lit = self->private_data.s_init_dynamic_huffman[0].v_n_lit;
v_n_dist = self->private_data.s_init_dynamic_huffman[0].v_n_dist;
v_n_clen = self->private_data.s_init_dynamic_huffman[0].v_n_clen;
v_i = self->private_data.s_init_dynamic_huffman[0].v_i;
v_mask = self->private_data.s_init_dynamic_huffman[0].v_mask;
v_n_extra_bits = self->private_data.s_init_dynamic_huffman[0].v_n_extra_bits;
v_rep_symbol = self->private_data.s_init_dynamic_huffman[0].v_rep_symbol;
v_rep_count = self->private_data.s_init_dynamic_huffman[0].v_rep_count;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
v_bits = self->private_impl.f_bits;
v_n_bits = self->private_impl.f_n_bits;
while (v_n_bits < 14) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint32_t t_0 = *iop_a_src++;
v_b0 = t_0;
}
v_bits |= (v_b0 << v_n_bits);
v_n_bits += 8;
}
v_n_lit = (((v_bits) & 0x1F) + 257);
if (v_n_lit > 286) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_literal_length_code_count);
goto exit;
}
v_bits >>= 5;
v_n_dist = (((v_bits) & 0x1F) + 1);
if (v_n_dist > 30) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_distance_code_count);
goto exit;
}
v_bits >>= 5;
v_n_clen = (((v_bits) & 0xF) + 4);
v_bits >>= 4;
v_n_bits -= 14;
v_i = 0;
while (v_i < v_n_clen) {
while (v_n_bits < 3) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint32_t t_1 = *iop_a_src++;
v_b1 = t_1;
}
v_bits |= (v_b1 << v_n_bits);
v_n_bits += 8;
}
self->private_data.f_code_lengths[WUFFS_DEFLATE__CODE_ORDER[v_i]] = ((uint8_t)((v_bits & 7)));
v_bits >>= 3;
v_n_bits -= 3;
v_i += 1;
}
while (v_i < 19) {
self->private_data.f_code_lengths[WUFFS_DEFLATE__CODE_ORDER[v_i]] = 0;
v_i += 1;
}
v_status = wuffs_deflate__decoder__init_huff(self,
0,
0,
19,
4095);
if (wuffs_base__status__is_error(&v_status)) {
status = v_status;
goto exit;
}
v_mask = ((((uint32_t)(1)) << self->private_impl.f_n_huffs_bits[0]) - 1);
v_i = 0;
label__0__continue:;
while (v_i < (v_n_lit + v_n_dist)) {
while (true) {
v_table_entry = self->private_data.f_huffs[0][(v_bits & v_mask)];
v_table_entry_n_bits = (v_table_entry & 15);
if (v_n_bits >= v_table_entry_n_bits) {
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
goto label__1__break;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint32_t t_2 = *iop_a_src++;
v_b2 = t_2;
}
v_bits |= (v_b2 << v_n_bits);
v_n_bits += 8;
}
label__1__break:;
if ((v_table_entry >> 24) != 128) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
}
v_table_entry = ((v_table_entry >> 8) & 255);
if (v_table_entry < 16) {
self->private_data.f_code_lengths[v_i] = ((uint8_t)(v_table_entry));
v_i += 1;
goto label__0__continue;
}
v_n_extra_bits = 0;
v_rep_symbol = 0;
v_rep_count = 0;
if (v_table_entry == 16) {
v_n_extra_bits = 2;
if (v_i <= 0) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_repetition);
goto exit;
}
v_rep_symbol = (self->private_data.f_code_lengths[(v_i - 1)] & 15);
v_rep_count = 3;
} else if (v_table_entry == 17) {
v_n_extra_bits = 3;
v_rep_symbol = 0;
v_rep_count = 3;
} else if (v_table_entry == 18) {
v_n_extra_bits = 7;
v_rep_symbol = 0;
v_rep_count = 11;
} else {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
}
while (v_n_bits < v_n_extra_bits) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint32_t t_3 = *iop_a_src++;
v_b3 = t_3;
}
v_bits |= (v_b3 << v_n_bits);
v_n_bits += 8;
}
v_rep_count += ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_n_extra_bits));
v_bits >>= v_n_extra_bits;
v_n_bits -= v_n_extra_bits;
while (v_rep_count > 0) {
if (v_i >= (v_n_lit + v_n_dist)) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_count);
goto exit;
}
self->private_data.f_code_lengths[v_i] = v_rep_symbol;
v_i += 1;
v_rep_count -= 1;
}
}
if (v_i != (v_n_lit + v_n_dist)) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_count);
goto exit;
}
if (self->private_data.f_code_lengths[256] == 0) {
status = wuffs_base__make_status(wuffs_deflate__error__missing_end_of_block_code);
goto exit;
}
v_status = wuffs_deflate__decoder__init_huff(self,
0,
0,
v_n_lit,
257);
if (wuffs_base__status__is_error(&v_status)) {
status = v_status;
goto exit;
}
v_status = wuffs_deflate__decoder__init_huff(self,
1,
v_n_lit,
(v_n_lit + v_n_dist),
0);
if (wuffs_base__status__is_error(&v_status)) {
status = v_status;
goto exit;
}
self->private_impl.f_bits = v_bits;
self->private_impl.f_n_bits = v_n_bits;
goto ok;
ok:
self->private_impl.p_init_dynamic_huffman[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_init_dynamic_huffman[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_init_dynamic_huffman[0].v_bits = v_bits;
self->private_data.s_init_dynamic_huffman[0].v_n_bits = v_n_bits;
self->private_data.s_init_dynamic_huffman[0].v_n_lit = v_n_lit;
self->private_data.s_init_dynamic_huffman[0].v_n_dist = v_n_dist;
self->private_data.s_init_dynamic_huffman[0].v_n_clen = v_n_clen;
self->private_data.s_init_dynamic_huffman[0].v_i = v_i;
self->private_data.s_init_dynamic_huffman[0].v_mask = v_mask;
self->private_data.s_init_dynamic_huffman[0].v_n_extra_bits = v_n_extra_bits;
self->private_data.s_init_dynamic_huffman[0].v_rep_symbol = v_rep_symbol;
self->private_data.s_init_dynamic_huffman[0].v_rep_count = v_rep_count;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func deflate.decoder.init_huff
static wuffs_base__status
wuffs_deflate__decoder__init_huff(
wuffs_deflate__decoder* self,
uint32_t a_which,
uint32_t a_n_codes0,
uint32_t a_n_codes1,
uint32_t a_base_symbol) {
uint16_t v_counts[16] = {0};
uint32_t v_i = 0;
uint32_t v_remaining = 0;
uint16_t v_offsets[16] = {0};
uint32_t v_n_symbols = 0;
uint32_t v_count = 0;
uint16_t v_symbols[320] = {0};
uint32_t v_min_cl = 0;
uint32_t v_max_cl = 0;
uint32_t v_initial_high_bits = 0;
uint32_t v_prev_cl = 0;
uint32_t v_prev_redirect_key = 0;
uint32_t v_top = 0;
uint32_t v_next_top = 0;
uint32_t v_code = 0;
uint32_t v_key = 0;
uint32_t v_value = 0;
uint32_t v_cl = 0;
uint32_t v_redirect_key = 0;
uint32_t v_j = 0;
uint32_t v_reversed_key = 0;
uint32_t v_symbol = 0;
uint32_t v_high_bits = 0;
uint32_t v_delta = 0;
v_i = a_n_codes0;
while (v_i < a_n_codes1) {
if (v_counts[(self->private_data.f_code_lengths[v_i] & 15)] >= 320) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
v_counts[(self->private_data.f_code_lengths[v_i] & 15)] += 1;
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
v_i += 1;
}
if ((((uint32_t)(v_counts[0])) + a_n_codes0) == a_n_codes1) {
return wuffs_base__make_status(wuffs_deflate__error__no_huffman_codes);
}
v_remaining = 1;
v_i = 1;
while (v_i <= 15) {
if (v_remaining > 1073741824) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
v_remaining <<= 1;
if (v_remaining < ((uint32_t)(v_counts[v_i]))) {
return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_over_subscribed);
}
v_remaining -= ((uint32_t)(v_counts[v_i]));
v_i += 1;
}
if (v_remaining != 0) {
if ((a_which == 1) && (v_counts[1] == 1) && ((((uint32_t)(v_counts[0])) + a_n_codes0 + 1) == a_n_codes1)) {
v_i = 0;
while (v_i <= 29) {
if (self->private_data.f_code_lengths[(a_n_codes0 + v_i)] == 1) {
self->private_impl.f_n_huffs_bits[1] = 1;
self->private_data.f_huffs[1][0] = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[v_i] | 1);
self->private_data.f_huffs[1][1] = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[31] | 1);
return wuffs_base__make_status(NULL);
}
v_i += 1;
}
}
return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_under_subscribed);
}
v_i = 1;
while (v_i <= 15) {
v_offsets[v_i] = ((uint16_t)(v_n_symbols));
v_count = ((uint32_t)(v_counts[v_i]));
if (v_n_symbols > (320 - v_count)) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
v_n_symbols = (v_n_symbols + v_count);
v_i += 1;
}
if (v_n_symbols > 288) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
v_i = a_n_codes0;
while (v_i < a_n_codes1) {
if (v_i < a_n_codes0) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
if (self->private_data.f_code_lengths[v_i] != 0) {
if (v_offsets[(self->private_data.f_code_lengths[v_i] & 15)] >= 320) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
v_symbols[v_offsets[(self->private_data.f_code_lengths[v_i] & 15)]] = ((uint16_t)((v_i - a_n_codes0)));
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
v_offsets[(self->private_data.f_code_lengths[v_i] & 15)] += 1;
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
}
v_i += 1;
}
v_min_cl = 1;
while (true) {
if (v_counts[v_min_cl] != 0) {
goto label__0__break;
}
if (v_min_cl >= 9) {
return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_minimum_code_length);
}
v_min_cl += 1;
}
label__0__break:;
v_max_cl = 15;
while (true) {
if (v_counts[v_max_cl] != 0) {
goto label__1__break;
}
if (v_max_cl <= 1) {
return wuffs_base__make_status(wuffs_deflate__error__no_huffman_codes);
}
v_max_cl -= 1;
}
label__1__break:;
if (v_max_cl <= 9) {
self->private_impl.f_n_huffs_bits[a_which] = v_max_cl;
} else {
self->private_impl.f_n_huffs_bits[a_which] = 9;
}
v_i = 0;
if ((v_n_symbols != ((uint32_t)(v_offsets[v_max_cl]))) || (v_n_symbols != ((uint32_t)(v_offsets[15])))) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
if ((a_n_codes0 + ((uint32_t)(v_symbols[0]))) >= 320) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
v_initial_high_bits = 512;
if (v_max_cl < 9) {
v_initial_high_bits = (((uint32_t)(1)) << v_max_cl);
}
v_prev_cl = ((uint32_t)((self->private_data.f_code_lengths[(a_n_codes0 + ((uint32_t)(v_symbols[0])))] & 15)));
v_prev_redirect_key = 4294967295;
v_top = 0;
v_next_top = 512;
v_code = 0;
v_key = 0;
v_value = 0;
while (true) {
if ((a_n_codes0 + ((uint32_t)(v_symbols[v_i]))) >= 320) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
v_cl = ((uint32_t)((self->private_data.f_code_lengths[(a_n_codes0 + ((uint32_t)(v_symbols[v_i])))] & 15)));
if (v_cl > v_prev_cl) {
v_code <<= (v_cl - v_prev_cl);
if (v_code >= 32768) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
}
v_prev_cl = v_cl;
v_key = v_code;
if (v_cl > 9) {
v_cl -= 9;
v_redirect_key = ((v_key >> v_cl) & 511);
v_key = ((v_key) & WUFFS_BASE__LOW_BITS_MASK__U32(v_cl));
if (v_prev_redirect_key != v_redirect_key) {
v_prev_redirect_key = v_redirect_key;
v_remaining = (((uint32_t)(1)) << v_cl);
v_j = v_prev_cl;
while (v_j <= 15) {
if (v_remaining <= ((uint32_t)(v_counts[v_j]))) {
goto label__2__break;
}
v_remaining -= ((uint32_t)(v_counts[v_j]));
if (v_remaining > 1073741824) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
v_remaining <<= 1;
v_j += 1;
}
label__2__break:;
if ((v_j <= 9) || (15 < v_j)) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
v_j -= 9;
v_initial_high_bits = (((uint32_t)(1)) << v_j);
v_top = v_next_top;
if ((v_top + (((uint32_t)(1)) << v_j)) > 1024) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
v_next_top = (v_top + (((uint32_t)(1)) << v_j));
v_redirect_key = (((uint32_t)(WUFFS_DEFLATE__REVERSE8[(v_redirect_key >> 1)])) | ((v_redirect_key & 1) << 8));
self->private_data.f_huffs[a_which][v_redirect_key] = (268435465 | (v_top << 8) | (v_j << 4));
}
}
if ((v_key >= 512) || (v_counts[v_prev_cl] <= 0)) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
v_counts[v_prev_cl] -= 1;
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
v_reversed_key = (((uint32_t)(WUFFS_DEFLATE__REVERSE8[(v_key >> 1)])) | ((v_key & 1) << 8));
v_reversed_key >>= (9 - v_cl);
v_symbol = ((uint32_t)(v_symbols[v_i]));
if (v_symbol == 256) {
v_value = (536870912 | v_cl);
} else if ((v_symbol < 256) && (a_which == 0)) {
v_value = (2147483648 | (v_symbol << 8) | v_cl);
} else if (v_symbol >= a_base_symbol) {
v_symbol -= a_base_symbol;
if (a_which == 0) {
v_value = (WUFFS_DEFLATE__LCODE_MAGIC_NUMBERS[(v_symbol & 31)] | v_cl);
} else {
v_value = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[(v_symbol & 31)] | v_cl);
}
} else {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
v_high_bits = v_initial_high_bits;
v_delta = (((uint32_t)(1)) << v_cl);
while (v_high_bits >= v_delta) {
v_high_bits -= v_delta;
if ((v_top + ((v_high_bits | v_reversed_key) & 511)) >= 1024) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
self->private_data.f_huffs[a_which][(v_top + ((v_high_bits | v_reversed_key) & 511))] = v_value;
}
v_i += 1;
if (v_i >= v_n_symbols) {
goto label__3__break;
}
v_code += 1;
if (v_code >= 32768) {
return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
}
}
label__3__break:;
return wuffs_base__make_status(NULL);
}
// โ€ผ WUFFS MULTI-FILE SECTION +x86_bmi2
// -------- func deflate.decoder.decode_huffman_bmi2
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("bmi2")
static wuffs_base__status
wuffs_deflate__decoder__decode_huffman_bmi2(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint64_t v_bits = 0;
uint32_t v_n_bits = 0;
uint32_t v_table_entry = 0;
uint32_t v_table_entry_n_bits = 0;
uint64_t v_lmask = 0;
uint64_t v_dmask = 0;
uint32_t v_redir_top = 0;
uint32_t v_redir_mask = 0;
uint32_t v_length = 0;
uint32_t v_dist_minus_1 = 0;
uint32_t v_hlen = 0;
uint32_t v_hdist = 0;
uint32_t v_hdist_adjustment = 0;
uint8_t* iop_a_dst = NULL;
uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7)) != 0)) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
goto exit;
}
v_bits = ((uint64_t)(self->private_impl.f_bits));
v_n_bits = self->private_impl.f_n_bits;
v_lmask = ((((uint64_t)(1)) << self->private_impl.f_n_huffs_bits[0]) - 1);
v_dmask = ((((uint64_t)(1)) << self->private_impl.f_n_huffs_bits[1]) - 1);
if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0)) {
status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
goto exit;
}
v_hdist_adjustment = ((uint32_t)(((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0)) & 4294967295)));
label__loop__continue:;
while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266) && (((uint64_t)(io2_a_src - iop_a_src)) >= 8)) {
v_bits |= ((uint64_t)(wuffs_base__peek_u64le__no_bounds_check(iop_a_src) << (v_n_bits & 63)));
iop_a_src += ((63 - (v_n_bits & 63)) >> 3);
v_n_bits |= 56;
v_table_entry = self->private_data.f_huffs[0][(v_bits & v_lmask)];
v_table_entry_n_bits = (v_table_entry & 15);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
if ((v_table_entry >> 31) != 0) {
(wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(((v_table_entry >> 8) & 255)))), iop_a_dst += 1);
goto label__loop__continue;
} else if ((v_table_entry >> 30) != 0) {
} else if ((v_table_entry >> 29) != 0) {
self->private_impl.f_end_of_block = true;
goto label__loop__break;
} else if ((v_table_entry >> 28) != 0) {
v_redir_top = ((v_table_entry >> 8) & 65535);
v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1);
v_table_entry = self->private_data.f_huffs[0][((v_redir_top + (((uint32_t)((v_bits & 4294967295))) & v_redir_mask)) & 1023)];
v_table_entry_n_bits = (v_table_entry & 15);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
if ((v_table_entry >> 31) != 0) {
(wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(((v_table_entry >> 8) & 255)))), iop_a_dst += 1);
goto label__loop__continue;
} else if ((v_table_entry >> 30) != 0) {
} else if ((v_table_entry >> 29) != 0) {
self->private_impl.f_end_of_block = true;
goto label__loop__break;
} else if ((v_table_entry >> 28) != 0) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
} else if ((v_table_entry >> 27) != 0) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
goto exit;
} else {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
}
} else if ((v_table_entry >> 27) != 0) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
goto exit;
} else {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
}
v_length = (((v_table_entry >> 8) & 255) + 3);
v_table_entry_n_bits = ((v_table_entry >> 4) & 15);
if (v_table_entry_n_bits > 0) {
v_length = (((v_length + 253 + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 255) + 3);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
}
v_table_entry = self->private_data.f_huffs[1][(v_bits & v_dmask)];
v_table_entry_n_bits = (v_table_entry & 15);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
if ((v_table_entry >> 28) == 1) {
v_redir_top = ((v_table_entry >> 8) & 65535);
v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1);
v_table_entry = self->private_data.f_huffs[1][((v_redir_top + (((uint32_t)((v_bits & 4294967295))) & v_redir_mask)) & 1023)];
v_table_entry_n_bits = (v_table_entry & 15);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
}
if ((v_table_entry >> 24) != 64) {
if ((v_table_entry >> 24) == 8) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
goto exit;
}
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
}
v_dist_minus_1 = ((v_table_entry >> 8) & 32767);
v_table_entry_n_bits = ((v_table_entry >> 4) & 15);
v_dist_minus_1 = ((v_dist_minus_1 + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 32767);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
while (true) {
if (((uint64_t)((v_dist_minus_1 + 1))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
v_hlen = 0;
v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
if (v_length > v_hdist) {
v_length -= v_hdist;
v_hlen = v_hdist;
} else {
v_hlen = v_length;
v_length = 0;
}
v_hdist += v_hdist_adjustment;
if (self->private_impl.f_history_index < v_hdist) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
goto exit;
}
wuffs_base__io_writer__limited_copy_u32_from_slice(
&iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767), 33025));
if (v_length == 0) {
goto label__loop__continue;
}
if ((((uint64_t)((v_dist_minus_1 + 1))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance);
goto exit;
}
}
if ((v_dist_minus_1 + 1) >= 8) {
wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
&iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1));
} else if ((v_dist_minus_1 + 1) == 1) {
wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast(
&iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1));
} else {
wuffs_base__io_writer__limited_copy_u32_from_history_fast(
&iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1));
}
goto label__0__break;
}
label__0__break:;
}
label__loop__break:;
if (v_n_bits > 63) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
goto exit;
}
while (v_n_bits >= 8) {
v_n_bits -= 8;
if (iop_a_src > io1_a_src) {
iop_a_src--;
} else {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o);
goto exit;
}
}
self->private_impl.f_bits = ((uint32_t)((v_bits & ((((uint64_t)(1)) << v_n_bits) - 1))));
self->private_impl.f_n_bits = v_n_bits;
if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0)) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
goto exit;
}
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// โ€ผ WUFFS MULTI-FILE SECTION -x86_bmi2
// -------- func deflate.decoder.decode_huffman_fast32
static wuffs_base__status
wuffs_deflate__decoder__decode_huffman_fast32(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_bits = 0;
uint32_t v_n_bits = 0;
uint32_t v_table_entry = 0;
uint32_t v_table_entry_n_bits = 0;
uint32_t v_lmask = 0;
uint32_t v_dmask = 0;
uint32_t v_redir_top = 0;
uint32_t v_redir_mask = 0;
uint32_t v_length = 0;
uint32_t v_dist_minus_1 = 0;
uint32_t v_hlen = 0;
uint32_t v_hdist = 0;
uint32_t v_hdist_adjustment = 0;
uint8_t* iop_a_dst = NULL;
uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7)) != 0)) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
goto exit;
}
v_bits = self->private_impl.f_bits;
v_n_bits = self->private_impl.f_n_bits;
v_lmask = ((((uint32_t)(1)) << self->private_impl.f_n_huffs_bits[0]) - 1);
v_dmask = ((((uint32_t)(1)) << self->private_impl.f_n_huffs_bits[1]) - 1);
if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0)) {
status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
goto exit;
}
v_hdist_adjustment = ((uint32_t)(((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0)) & 4294967295)));
label__loop__continue:;
while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266) && (((uint64_t)(io2_a_src - iop_a_src)) >= 12)) {
if (v_n_bits < 15) {
v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
iop_a_src += 1;
v_n_bits += 8;
v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
iop_a_src += 1;
v_n_bits += 8;
} else {
}
v_table_entry = self->private_data.f_huffs[0][(v_bits & v_lmask)];
v_table_entry_n_bits = (v_table_entry & 15);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
if ((v_table_entry >> 31) != 0) {
(wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(((v_table_entry >> 8) & 255)))), iop_a_dst += 1);
goto label__loop__continue;
} else if ((v_table_entry >> 30) != 0) {
} else if ((v_table_entry >> 29) != 0) {
self->private_impl.f_end_of_block = true;
goto label__loop__break;
} else if ((v_table_entry >> 28) != 0) {
if (v_n_bits < 15) {
v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
iop_a_src += 1;
v_n_bits += 8;
v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
iop_a_src += 1;
v_n_bits += 8;
} else {
}
v_redir_top = ((v_table_entry >> 8) & 65535);
v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1);
v_table_entry = self->private_data.f_huffs[0][((v_redir_top + (v_bits & v_redir_mask)) & 1023)];
v_table_entry_n_bits = (v_table_entry & 15);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
if ((v_table_entry >> 31) != 0) {
(wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(((v_table_entry >> 8) & 255)))), iop_a_dst += 1);
goto label__loop__continue;
} else if ((v_table_entry >> 30) != 0) {
} else if ((v_table_entry >> 29) != 0) {
self->private_impl.f_end_of_block = true;
goto label__loop__break;
} else if ((v_table_entry >> 28) != 0) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
} else if ((v_table_entry >> 27) != 0) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
goto exit;
} else {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
}
} else if ((v_table_entry >> 27) != 0) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
goto exit;
} else {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
}
v_length = (((v_table_entry >> 8) & 255) + 3);
v_table_entry_n_bits = ((v_table_entry >> 4) & 15);
if (v_table_entry_n_bits > 0) {
if (v_n_bits < 15) {
v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
iop_a_src += 1;
v_n_bits += 8;
v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
iop_a_src += 1;
v_n_bits += 8;
} else {
}
v_length = (((v_length + 253 + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 255) + 3);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
} else {
}
if (v_n_bits < 15) {
v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
iop_a_src += 1;
v_n_bits += 8;
v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
iop_a_src += 1;
v_n_bits += 8;
} else {
}
v_table_entry = self->private_data.f_huffs[1][(v_bits & v_dmask)];
v_table_entry_n_bits = (v_table_entry & 15);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
if ((v_table_entry >> 28) == 1) {
if (v_n_bits < 15) {
v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
iop_a_src += 1;
v_n_bits += 8;
v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
iop_a_src += 1;
v_n_bits += 8;
} else {
}
v_redir_top = ((v_table_entry >> 8) & 65535);
v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1);
v_table_entry = self->private_data.f_huffs[1][((v_redir_top + (v_bits & v_redir_mask)) & 1023)];
v_table_entry_n_bits = (v_table_entry & 15);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
} else {
}
if ((v_table_entry >> 24) != 64) {
if ((v_table_entry >> 24) == 8) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
goto exit;
}
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
}
v_dist_minus_1 = ((v_table_entry >> 8) & 32767);
v_table_entry_n_bits = ((v_table_entry >> 4) & 15);
if (v_n_bits < v_table_entry_n_bits) {
v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
iop_a_src += 1;
v_n_bits += 8;
v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
iop_a_src += 1;
v_n_bits += 8;
}
v_dist_minus_1 = ((v_dist_minus_1 + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 32767);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
while (true) {
if (((uint64_t)((v_dist_minus_1 + 1))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
v_hlen = 0;
v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
if (v_length > v_hdist) {
v_length -= v_hdist;
v_hlen = v_hdist;
} else {
v_hlen = v_length;
v_length = 0;
}
v_hdist += v_hdist_adjustment;
if (self->private_impl.f_history_index < v_hdist) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
goto exit;
}
wuffs_base__io_writer__limited_copy_u32_from_slice(
&iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767), 33025));
if (v_length == 0) {
goto label__loop__continue;
}
if ((((uint64_t)((v_dist_minus_1 + 1))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance);
goto exit;
}
}
if ((v_dist_minus_1 + 1) >= 8) {
wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
&iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1));
} else {
wuffs_base__io_writer__limited_copy_u32_from_history_fast(
&iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1));
}
goto label__0__break;
}
label__0__break:;
}
label__loop__break:;
while (v_n_bits >= 8) {
v_n_bits -= 8;
if (iop_a_src > io1_a_src) {
iop_a_src--;
} else {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o);
goto exit;
}
}
self->private_impl.f_bits = (v_bits & ((((uint32_t)(1)) << v_n_bits) - 1));
self->private_impl.f_n_bits = v_n_bits;
if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0)) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
goto exit;
}
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func deflate.decoder.decode_huffman_fast64
static wuffs_base__status
wuffs_deflate__decoder__decode_huffman_fast64(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
return (*self->private_impl.choosy_decode_huffman_fast64)(self, a_dst, a_src);
}
static wuffs_base__status
wuffs_deflate__decoder__decode_huffman_fast64__choosy_default(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint64_t v_bits = 0;
uint32_t v_n_bits = 0;
uint32_t v_table_entry = 0;
uint32_t v_table_entry_n_bits = 0;
uint64_t v_lmask = 0;
uint64_t v_dmask = 0;
uint32_t v_redir_top = 0;
uint32_t v_redir_mask = 0;
uint32_t v_length = 0;
uint32_t v_dist_minus_1 = 0;
uint32_t v_hlen = 0;
uint32_t v_hdist = 0;
uint32_t v_hdist_adjustment = 0;
uint8_t* iop_a_dst = NULL;
uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7)) != 0)) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
goto exit;
}
v_bits = ((uint64_t)(self->private_impl.f_bits));
v_n_bits = self->private_impl.f_n_bits;
v_lmask = ((((uint64_t)(1)) << self->private_impl.f_n_huffs_bits[0]) - 1);
v_dmask = ((((uint64_t)(1)) << self->private_impl.f_n_huffs_bits[1]) - 1);
if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0)) {
status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
goto exit;
}
v_hdist_adjustment = ((uint32_t)(((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0)) & 4294967295)));
label__loop__continue:;
while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266) && (((uint64_t)(io2_a_src - iop_a_src)) >= 8)) {
v_bits |= ((uint64_t)(wuffs_base__peek_u64le__no_bounds_check(iop_a_src) << (v_n_bits & 63)));
iop_a_src += ((63 - (v_n_bits & 63)) >> 3);
v_n_bits |= 56;
v_table_entry = self->private_data.f_huffs[0][(v_bits & v_lmask)];
v_table_entry_n_bits = (v_table_entry & 15);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
if ((v_table_entry >> 31) != 0) {
(wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(((v_table_entry >> 8) & 255)))), iop_a_dst += 1);
goto label__loop__continue;
} else if ((v_table_entry >> 30) != 0) {
} else if ((v_table_entry >> 29) != 0) {
self->private_impl.f_end_of_block = true;
goto label__loop__break;
} else if ((v_table_entry >> 28) != 0) {
v_redir_top = ((v_table_entry >> 8) & 65535);
v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1);
v_table_entry = self->private_data.f_huffs[0][((v_redir_top + (((uint32_t)((v_bits & 4294967295))) & v_redir_mask)) & 1023)];
v_table_entry_n_bits = (v_table_entry & 15);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
if ((v_table_entry >> 31) != 0) {
(wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(((v_table_entry >> 8) & 255)))), iop_a_dst += 1);
goto label__loop__continue;
} else if ((v_table_entry >> 30) != 0) {
} else if ((v_table_entry >> 29) != 0) {
self->private_impl.f_end_of_block = true;
goto label__loop__break;
} else if ((v_table_entry >> 28) != 0) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
} else if ((v_table_entry >> 27) != 0) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
goto exit;
} else {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
}
} else if ((v_table_entry >> 27) != 0) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
goto exit;
} else {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
}
v_length = (((v_table_entry >> 8) & 255) + 3);
v_table_entry_n_bits = ((v_table_entry >> 4) & 15);
if (v_table_entry_n_bits > 0) {
v_length = (((v_length + 253 + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 255) + 3);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
}
v_table_entry = self->private_data.f_huffs[1][(v_bits & v_dmask)];
v_table_entry_n_bits = (v_table_entry & 15);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
if ((v_table_entry >> 28) == 1) {
v_redir_top = ((v_table_entry >> 8) & 65535);
v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1);
v_table_entry = self->private_data.f_huffs[1][((v_redir_top + (((uint32_t)((v_bits & 4294967295))) & v_redir_mask)) & 1023)];
v_table_entry_n_bits = (v_table_entry & 15);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
}
if ((v_table_entry >> 24) != 64) {
if ((v_table_entry >> 24) == 8) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
goto exit;
}
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
}
v_dist_minus_1 = ((v_table_entry >> 8) & 32767);
v_table_entry_n_bits = ((v_table_entry >> 4) & 15);
v_dist_minus_1 = ((v_dist_minus_1 + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 32767);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
while (true) {
if (((uint64_t)((v_dist_minus_1 + 1))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
v_hlen = 0;
v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
if (v_length > v_hdist) {
v_length -= v_hdist;
v_hlen = v_hdist;
} else {
v_hlen = v_length;
v_length = 0;
}
v_hdist += v_hdist_adjustment;
if (self->private_impl.f_history_index < v_hdist) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
goto exit;
}
wuffs_base__io_writer__limited_copy_u32_from_slice(
&iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767), 33025));
if (v_length == 0) {
goto label__loop__continue;
}
if ((((uint64_t)((v_dist_minus_1 + 1))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance);
goto exit;
}
}
if ((v_dist_minus_1 + 1) >= 8) {
wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast(
&iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1));
} else if ((v_dist_minus_1 + 1) == 1) {
wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast(
&iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1));
} else {
wuffs_base__io_writer__limited_copy_u32_from_history_fast(
&iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1));
}
goto label__0__break;
}
label__0__break:;
}
label__loop__break:;
if (v_n_bits > 63) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
goto exit;
}
while (v_n_bits >= 8) {
v_n_bits -= 8;
if (iop_a_src > io1_a_src) {
iop_a_src--;
} else {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o);
goto exit;
}
}
self->private_impl.f_bits = ((uint32_t)((v_bits & ((((uint64_t)(1)) << v_n_bits) - 1))));
self->private_impl.f_n_bits = v_n_bits;
if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0)) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
goto exit;
}
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func deflate.decoder.decode_huffman_slow
static wuffs_base__status
wuffs_deflate__decoder__decode_huffman_slow(
wuffs_deflate__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_bits = 0;
uint32_t v_n_bits = 0;
uint32_t v_table_entry = 0;
uint32_t v_table_entry_n_bits = 0;
uint32_t v_lmask = 0;
uint32_t v_dmask = 0;
uint32_t v_b0 = 0;
uint32_t v_redir_top = 0;
uint32_t v_redir_mask = 0;
uint32_t v_b1 = 0;
uint32_t v_length = 0;
uint32_t v_b2 = 0;
uint32_t v_b3 = 0;
uint32_t v_b4 = 0;
uint32_t v_dist_minus_1 = 0;
uint32_t v_b5 = 0;
uint32_t v_n_copied = 0;
uint32_t v_hlen = 0;
uint32_t v_hdist = 0;
uint8_t* iop_a_dst = NULL;
uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_huffman_slow[0];
if (coro_susp_point) {
v_bits = self->private_data.s_decode_huffman_slow[0].v_bits;
v_n_bits = self->private_data.s_decode_huffman_slow[0].v_n_bits;
v_table_entry_n_bits = self->private_data.s_decode_huffman_slow[0].v_table_entry_n_bits;
v_lmask = self->private_data.s_decode_huffman_slow[0].v_lmask;
v_dmask = self->private_data.s_decode_huffman_slow[0].v_dmask;
v_redir_top = self->private_data.s_decode_huffman_slow[0].v_redir_top;
v_redir_mask = self->private_data.s_decode_huffman_slow[0].v_redir_mask;
v_length = self->private_data.s_decode_huffman_slow[0].v_length;
v_dist_minus_1 = self->private_data.s_decode_huffman_slow[0].v_dist_minus_1;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7)) != 0)) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
goto exit;
}
v_bits = self->private_impl.f_bits;
v_n_bits = self->private_impl.f_n_bits;
v_lmask = ((((uint32_t)(1)) << self->private_impl.f_n_huffs_bits[0]) - 1);
v_dmask = ((((uint32_t)(1)) << self->private_impl.f_n_huffs_bits[1]) - 1);
label__loop__continue:;
while ( ! (self->private_impl.p_decode_huffman_slow[0] != 0)) {
while (true) {
v_table_entry = self->private_data.f_huffs[0][(v_bits & v_lmask)];
v_table_entry_n_bits = (v_table_entry & 15);
if (v_n_bits >= v_table_entry_n_bits) {
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
goto label__0__break;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint32_t t_0 = *iop_a_src++;
v_b0 = t_0;
}
v_bits |= (v_b0 << v_n_bits);
v_n_bits += 8;
}
label__0__break:;
if ((v_table_entry >> 31) != 0) {
self->private_data.s_decode_huffman_slow[0].scratch = ((uint8_t)(((v_table_entry >> 8) & 255)));
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (iop_a_dst == io2_a_dst) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
goto suspend;
}
*iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_huffman_slow[0].scratch));
goto label__loop__continue;
} else if ((v_table_entry >> 30) != 0) {
} else if ((v_table_entry >> 29) != 0) {
self->private_impl.f_end_of_block = true;
goto label__loop__break;
} else if ((v_table_entry >> 28) != 0) {
v_redir_top = ((v_table_entry >> 8) & 65535);
v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1);
while (true) {
v_table_entry = self->private_data.f_huffs[0][((v_redir_top + (v_bits & v_redir_mask)) & 1023)];
v_table_entry_n_bits = (v_table_entry & 15);
if (v_n_bits >= v_table_entry_n_bits) {
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
goto label__1__break;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint32_t t_1 = *iop_a_src++;
v_b1 = t_1;
}
v_bits |= (v_b1 << v_n_bits);
v_n_bits += 8;
}
label__1__break:;
if ((v_table_entry >> 31) != 0) {
self->private_data.s_decode_huffman_slow[0].scratch = ((uint8_t)(((v_table_entry >> 8) & 255)));
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
if (iop_a_dst == io2_a_dst) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
goto suspend;
}
*iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_huffman_slow[0].scratch));
goto label__loop__continue;
} else if ((v_table_entry >> 30) != 0) {
} else if ((v_table_entry >> 29) != 0) {
self->private_impl.f_end_of_block = true;
goto label__loop__break;
} else if ((v_table_entry >> 28) != 0) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
} else if ((v_table_entry >> 27) != 0) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
goto exit;
} else {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
}
} else if ((v_table_entry >> 27) != 0) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
goto exit;
} else {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
}
v_length = (((v_table_entry >> 8) & 255) + 3);
v_table_entry_n_bits = ((v_table_entry >> 4) & 15);
if (v_table_entry_n_bits > 0) {
while (v_n_bits < v_table_entry_n_bits) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint32_t t_2 = *iop_a_src++;
v_b2 = t_2;
}
v_bits |= (v_b2 << v_n_bits);
v_n_bits += 8;
}
v_length = (((v_length + 253 + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 255) + 3);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
}
while (true) {
v_table_entry = self->private_data.f_huffs[1][(v_bits & v_dmask)];
v_table_entry_n_bits = (v_table_entry & 15);
if (v_n_bits >= v_table_entry_n_bits) {
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
goto label__2__break;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint32_t t_3 = *iop_a_src++;
v_b3 = t_3;
}
v_bits |= (v_b3 << v_n_bits);
v_n_bits += 8;
}
label__2__break:;
if ((v_table_entry >> 28) == 1) {
v_redir_top = ((v_table_entry >> 8) & 65535);
v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1);
while (true) {
v_table_entry = self->private_data.f_huffs[1][((v_redir_top + (v_bits & v_redir_mask)) & 1023)];
v_table_entry_n_bits = (v_table_entry & 15);
if (v_n_bits >= v_table_entry_n_bits) {
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
goto label__3__break;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint32_t t_4 = *iop_a_src++;
v_b4 = t_4;
}
v_bits |= (v_b4 << v_n_bits);
v_n_bits += 8;
}
label__3__break:;
}
if ((v_table_entry >> 24) != 64) {
if ((v_table_entry >> 24) == 8) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code);
goto exit;
}
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state);
goto exit;
}
v_dist_minus_1 = ((v_table_entry >> 8) & 32767);
v_table_entry_n_bits = ((v_table_entry >> 4) & 15);
if (v_table_entry_n_bits > 0) {
while (v_n_bits < v_table_entry_n_bits) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint32_t t_5 = *iop_a_src++;
v_b5 = t_5;
}
v_bits |= (v_b5 << v_n_bits);
v_n_bits += 8;
}
v_dist_minus_1 = ((v_dist_minus_1 + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 32767);
v_bits >>= v_table_entry_n_bits;
v_n_bits -= v_table_entry_n_bits;
}
label__inner__continue:;
while (true) {
if (((uint64_t)((v_dist_minus_1 + 1))) > ((uint64_t)(iop_a_dst - io0_a_dst))) {
v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1))) - ((uint64_t)(iop_a_dst - io0_a_dst)))));
if (v_hdist < v_length) {
v_hlen = v_hdist;
} else {
v_hlen = v_length;
}
v_hdist += ((uint32_t)((((uint64_t)(self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0))) & 4294967295)));
if (self->private_impl.f_history_index < v_hdist) {
status = wuffs_base__make_status(wuffs_deflate__error__bad_distance);
goto exit;
}
v_n_copied = wuffs_base__io_writer__limited_copy_u32_from_slice(
&iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767), 33025));
if (v_n_copied < v_hlen) {
v_length -= v_n_copied;
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
goto label__inner__continue;
}
v_length -= v_hlen;
if (v_length == 0) {
goto label__loop__continue;
}
}
v_n_copied = wuffs_base__io_writer__limited_copy_u32_from_history(
&iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1));
if (v_length <= v_n_copied) {
goto label__loop__continue;
}
v_length -= v_n_copied;
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
}
}
label__loop__break:;
self->private_impl.f_bits = v_bits;
self->private_impl.f_n_bits = v_n_bits;
if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7)) != 0)) {
status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits);
goto exit;
}
ok:
self->private_impl.p_decode_huffman_slow[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_huffman_slow[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_decode_huffman_slow[0].v_bits = v_bits;
self->private_data.s_decode_huffman_slow[0].v_n_bits = v_n_bits;
self->private_data.s_decode_huffman_slow[0].v_table_entry_n_bits = v_table_entry_n_bits;
self->private_data.s_decode_huffman_slow[0].v_lmask = v_lmask;
self->private_data.s_decode_huffman_slow[0].v_dmask = v_dmask;
self->private_data.s_decode_huffman_slow[0].v_redir_top = v_redir_top;
self->private_data.s_decode_huffman_slow[0].v_redir_mask = v_redir_mask;
self->private_data.s_decode_huffman_slow[0].v_length = v_length;
self->private_data.s_decode_huffman_slow[0].v_dist_minus_1 = v_dist_minus_1;
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW)
// ---------------- Status Codes Implementations
const char wuffs_lzw__error__bad_code[] = "#lzw: bad code";
const char wuffs_lzw__error__internal_error_inconsistent_i_o[] = "#lzw: internal error: inconsistent I/O";
// ---------------- Private Consts
// ---------------- Private Initializer Prototypes
// ---------------- Private Function Prototypes
static wuffs_base__empty_struct
wuffs_lzw__decoder__read_from(
wuffs_lzw__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_lzw__decoder__write_to(
wuffs_lzw__decoder* self,
wuffs_base__io_buffer* a_dst);
// ---------------- VTables
const wuffs_base__io_transformer__func_ptrs
wuffs_lzw__decoder__func_ptrs_for__wuffs_base__io_transformer = {
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_lzw__decoder__set_quirk_enabled),
(wuffs_base__status(*)(void*,
wuffs_base__io_buffer*,
wuffs_base__io_buffer*,
wuffs_base__slice_u8))(&wuffs_lzw__decoder__transform_io),
(wuffs_base__range_ii_u64(*)(const void*))(&wuffs_lzw__decoder__workbuf_len),
};
// ---------------- Initializer Implementations
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_lzw__decoder__initialize(
wuffs_lzw__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options){
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (sizeof(*self) != sizeof_star_self) {
return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
}
if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
(((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
}
if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
// The whole point of this if-check is to detect an uninitialized *self.
// We disable the warning on GCC. Clang-5.0 does not have this warning.
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
if (self->private_impl.magic != 0) {
return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
}
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
} else {
if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
memset(self, 0, sizeof(*self));
options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
} else {
memset(&(self->private_impl), 0, sizeof(self->private_impl));
}
}
self->private_impl.magic = WUFFS_BASE__MAGIC;
self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
wuffs_base__io_transformer__vtable_name;
self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
(const void*)(&wuffs_lzw__decoder__func_ptrs_for__wuffs_base__io_transformer);
return wuffs_base__make_status(NULL);
}
wuffs_lzw__decoder*
wuffs_lzw__decoder__alloc() {
wuffs_lzw__decoder* x =
(wuffs_lzw__decoder*)(calloc(sizeof(wuffs_lzw__decoder), 1));
if (!x) {
return NULL;
}
if (wuffs_lzw__decoder__initialize(
x, sizeof(wuffs_lzw__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
free(x);
return NULL;
}
return x;
}
size_t
sizeof__wuffs_lzw__decoder() {
return sizeof(wuffs_lzw__decoder);
}
// ---------------- Function Implementations
// -------- func lzw.decoder.set_quirk_enabled
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_lzw__decoder__set_quirk_enabled(
wuffs_lzw__decoder* self,
uint32_t a_quirk,
bool a_enabled) {
return wuffs_base__make_empty_struct();
}
// -------- func lzw.decoder.set_literal_width
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_lzw__decoder__set_literal_width(
wuffs_lzw__decoder* self,
uint32_t a_lw) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
if (a_lw > 8) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_empty_struct();
}
self->private_impl.f_set_literal_width_arg = (a_lw + 1);
return wuffs_base__make_empty_struct();
}
// -------- func lzw.decoder.workbuf_len
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_lzw__decoder__workbuf_len(
const wuffs_lzw__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
return wuffs_base__utility__make_range_ii_u64(0, 0);
}
// -------- func lzw.decoder.transform_io
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_lzw__decoder__transform_io(
wuffs_lzw__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 1)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_i = 0;
uint32_t coro_susp_point = self->private_impl.p_transform_io[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
self->private_impl.f_literal_width = 8;
if (self->private_impl.f_set_literal_width_arg > 0) {
self->private_impl.f_literal_width = (self->private_impl.f_set_literal_width_arg - 1);
}
self->private_impl.f_clear_code = (((uint32_t)(1)) << self->private_impl.f_literal_width);
self->private_impl.f_end_code = (self->private_impl.f_clear_code + 1);
self->private_impl.f_save_code = self->private_impl.f_end_code;
self->private_impl.f_prev_code = self->private_impl.f_end_code;
self->private_impl.f_width = (self->private_impl.f_literal_width + 1);
self->private_impl.f_bits = 0;
self->private_impl.f_n_bits = 0;
self->private_impl.f_output_ri = 0;
self->private_impl.f_output_wi = 0;
v_i = 0;
while (v_i < self->private_impl.f_clear_code) {
self->private_data.f_lm1s[v_i] = 0;
self->private_data.f_suffixes[v_i][0] = ((uint8_t)(v_i));
v_i += 1;
}
label__0__continue:;
while (true) {
wuffs_lzw__decoder__read_from(self, a_src);
if (self->private_impl.f_output_wi > 0) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_lzw__decoder__write_to(self, a_dst);
if (status.repr) {
goto suspend;
}
}
if (self->private_impl.f_read_from_return_value == 0) {
goto label__0__break;
} else if (self->private_impl.f_read_from_return_value == 1) {
goto label__0__continue;
} else if (self->private_impl.f_read_from_return_value == 2) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
} else if (self->private_impl.f_read_from_return_value == 3) {
status = wuffs_base__make_status(wuffs_lzw__error__bad_code);
goto exit;
} else {
status = wuffs_base__make_status(wuffs_lzw__error__internal_error_inconsistent_i_o);
goto exit;
}
}
label__0__break:;
ok:
self->private_impl.p_transform_io[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
goto exit;
exit:
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func lzw.decoder.read_from
static wuffs_base__empty_struct
wuffs_lzw__decoder__read_from(
wuffs_lzw__decoder* self,
wuffs_base__io_buffer* a_src) {
uint32_t v_clear_code = 0;
uint32_t v_end_code = 0;
uint32_t v_save_code = 0;
uint32_t v_prev_code = 0;
uint32_t v_width = 0;
uint32_t v_bits = 0;
uint32_t v_n_bits = 0;
uint32_t v_output_wi = 0;
uint32_t v_code = 0;
uint32_t v_c = 0;
uint32_t v_o = 0;
uint32_t v_steps = 0;
uint8_t v_first_byte = 0;
uint16_t v_lm1_b = 0;
uint16_t v_lm1_a = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
v_clear_code = self->private_impl.f_clear_code;
v_end_code = self->private_impl.f_end_code;
v_save_code = self->private_impl.f_save_code;
v_prev_code = self->private_impl.f_prev_code;
v_width = self->private_impl.f_width;
v_bits = self->private_impl.f_bits;
v_n_bits = self->private_impl.f_n_bits;
v_output_wi = self->private_impl.f_output_wi;
while (true) {
if (v_n_bits < v_width) {
if (((uint64_t)(io2_a_src - iop_a_src)) >= 4) {
v_bits |= ((uint32_t)(wuffs_base__peek_u32le__no_bounds_check(iop_a_src) << v_n_bits));
iop_a_src += ((31 - v_n_bits) >> 3);
v_n_bits |= 24;
} else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
self->private_impl.f_read_from_return_value = 2;
goto label__0__break;
} else {
v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
iop_a_src += 1;
v_n_bits += 8;
if (v_n_bits >= v_width) {
} else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
self->private_impl.f_read_from_return_value = 2;
goto label__0__break;
} else {
v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits);
iop_a_src += 1;
v_n_bits += 8;
if (v_n_bits < v_width) {
self->private_impl.f_read_from_return_value = 4;
goto label__0__break;
}
}
}
}
v_code = ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_width));
v_bits >>= v_width;
v_n_bits -= v_width;
if (v_code < v_clear_code) {
self->private_data.f_output[v_output_wi] = ((uint8_t)(v_code));
v_output_wi = ((v_output_wi + 1) & 8191);
if (v_save_code <= 4095) {
v_lm1_a = (((uint16_t)(self->private_data.f_lm1s[v_prev_code] + 1)) & 4095);
self->private_data.f_lm1s[v_save_code] = v_lm1_a;
if ((v_lm1_a % 8) != 0) {
self->private_impl.f_prefixes[v_save_code] = self->private_impl.f_prefixes[v_prev_code];
memcpy(self->private_data.f_suffixes[v_save_code],self->private_data.f_suffixes[v_prev_code], sizeof(self->private_data.f_suffixes[v_save_code]));
self->private_data.f_suffixes[v_save_code][(v_lm1_a % 8)] = ((uint8_t)(v_code));
} else {
self->private_impl.f_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
self->private_data.f_suffixes[v_save_code][0] = ((uint8_t)(v_code));
}
v_save_code += 1;
if (v_width < 12) {
v_width += (1 & (v_save_code >> v_width));
}
v_prev_code = v_code;
}
} else if (v_code <= v_end_code) {
if (v_code == v_end_code) {
self->private_impl.f_read_from_return_value = 0;
goto label__0__break;
}
v_save_code = v_end_code;
v_prev_code = v_end_code;
v_width = (self->private_impl.f_literal_width + 1);
} else if (v_code <= v_save_code) {
v_c = v_code;
if (v_code == v_save_code) {
v_c = v_prev_code;
}
v_o = ((v_output_wi + (((uint32_t)(self->private_data.f_lm1s[v_c])) & 4294967288)) & 8191);
v_output_wi = ((v_output_wi + 1 + ((uint32_t)(self->private_data.f_lm1s[v_c]))) & 8191);
v_steps = (((uint32_t)(self->private_data.f_lm1s[v_c])) >> 3);
while (true) {
memcpy((self->private_data.f_output)+(v_o), (self->private_data.f_suffixes[v_c]), 8);
if (v_steps <= 0) {
goto label__1__break;
}
v_steps -= 1;
v_o = (((uint32_t)(v_o - 8)) & 8191);
v_c = ((uint32_t)(self->private_impl.f_prefixes[v_c]));
}
label__1__break:;
v_first_byte = self->private_data.f_suffixes[v_c][0];
if (v_code == v_save_code) {
self->private_data.f_output[v_output_wi] = v_first_byte;
v_output_wi = ((v_output_wi + 1) & 8191);
}
if (v_save_code <= 4095) {
v_lm1_b = (((uint16_t)(self->private_data.f_lm1s[v_prev_code] + 1)) & 4095);
self->private_data.f_lm1s[v_save_code] = v_lm1_b;
if ((v_lm1_b % 8) != 0) {
self->private_impl.f_prefixes[v_save_code] = self->private_impl.f_prefixes[v_prev_code];
memcpy(self->private_data.f_suffixes[v_save_code],self->private_data.f_suffixes[v_prev_code], sizeof(self->private_data.f_suffixes[v_save_code]));
self->private_data.f_suffixes[v_save_code][(v_lm1_b % 8)] = v_first_byte;
} else {
self->private_impl.f_prefixes[v_save_code] = ((uint16_t)(v_prev_code));
self->private_data.f_suffixes[v_save_code][0] = ((uint8_t)(v_first_byte));
}
v_save_code += 1;
if (v_width < 12) {
v_width += (1 & (v_save_code >> v_width));
}
v_prev_code = v_code;
}
} else {
self->private_impl.f_read_from_return_value = 3;
goto label__0__break;
}
if (v_output_wi > 4095) {
self->private_impl.f_read_from_return_value = 1;
goto label__0__break;
}
}
label__0__break:;
if (self->private_impl.f_read_from_return_value != 2) {
while (v_n_bits >= 8) {
v_n_bits -= 8;
if (iop_a_src > io1_a_src) {
iop_a_src--;
} else {
self->private_impl.f_read_from_return_value = 4;
goto label__2__break;
}
}
label__2__break:;
}
self->private_impl.f_save_code = v_save_code;
self->private_impl.f_prev_code = v_prev_code;
self->private_impl.f_width = v_width;
self->private_impl.f_bits = v_bits;
self->private_impl.f_n_bits = v_n_bits;
self->private_impl.f_output_wi = v_output_wi;
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return wuffs_base__make_empty_struct();
}
// -------- func lzw.decoder.write_to
static wuffs_base__status
wuffs_lzw__decoder__write_to(
wuffs_lzw__decoder* self,
wuffs_base__io_buffer* a_dst) {
wuffs_base__status status = wuffs_base__make_status(NULL);
wuffs_base__slice_u8 v_s = {0};
uint64_t v_n = 0;
uint8_t* iop_a_dst = NULL;
uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
uint32_t coro_susp_point = self->private_impl.p_write_to[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
while (self->private_impl.f_output_wi > 0) {
if (self->private_impl.f_output_ri > self->private_impl.f_output_wi) {
status = wuffs_base__make_status(wuffs_lzw__error__internal_error_inconsistent_i_o);
goto exit;
}
v_s = wuffs_base__make_slice_u8_ij(self->private_data.f_output,
self->private_impl.f_output_ri,
self->private_impl.f_output_wi);
v_n = wuffs_base__io_writer__copy_from_slice(&iop_a_dst, io2_a_dst,v_s);
if (v_n == ((uint64_t)(v_s.len))) {
self->private_impl.f_output_ri = 0;
self->private_impl.f_output_wi = 0;
status = wuffs_base__make_status(NULL);
goto ok;
}
self->private_impl.f_output_ri = (((uint32_t)(self->private_impl.f_output_ri + ((uint32_t)((v_n & 4294967295))))) & 8191);
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
}
ok:
self->private_impl.p_write_to[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_write_to[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
return status;
}
// -------- func lzw.decoder.flush
WUFFS_BASE__MAYBE_STATIC wuffs_base__slice_u8
wuffs_lzw__decoder__flush(
wuffs_lzw__decoder* self) {
if (!self) {
return wuffs_base__make_slice_u8(NULL, 0);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_slice_u8(NULL, 0);
}
wuffs_base__slice_u8 v_s = {0};
if (self->private_impl.f_output_ri <= self->private_impl.f_output_wi) {
v_s = wuffs_base__make_slice_u8_ij(self->private_data.f_output,
self->private_impl.f_output_ri,
self->private_impl.f_output_wi);
}
self->private_impl.f_output_ri = 0;
self->private_impl.f_output_wi = 0;
return v_s;
}
#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF)
// ---------------- Status Codes Implementations
const char wuffs_gif__error__bad_extension_label[] = "#gif: bad extension label";
const char wuffs_gif__error__bad_frame_size[] = "#gif: bad frame size";
const char wuffs_gif__error__bad_graphic_control[] = "#gif: bad graphic control";
const char wuffs_gif__error__bad_header[] = "#gif: bad header";
const char wuffs_gif__error__bad_literal_width[] = "#gif: bad literal width";
const char wuffs_gif__error__bad_palette[] = "#gif: bad palette";
const char wuffs_gif__error__internal_error_inconsistent_ri_wi[] = "#gif: internal error: inconsistent ri/wi";
// ---------------- Private Consts
static const uint32_t
WUFFS_GIF__INTERLACE_START[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
4294967295, 1, 2, 4, 0,
};
static const uint8_t
WUFFS_GIF__INTERLACE_DELTA[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
1, 2, 4, 8, 8,
};
static const uint8_t
WUFFS_GIF__INTERLACE_COUNT[5] WUFFS_BASE__POTENTIALLY_UNUSED = {
0, 1, 2, 4, 8,
};
static const uint8_t
WUFFS_GIF__ANIMEXTS1DOT0[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
65, 78, 73, 77, 69, 88, 84, 83,
49, 46, 48,
};
static const uint8_t
WUFFS_GIF__NETSCAPE2DOT0[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
78, 69, 84, 83, 67, 65, 80, 69,
50, 46, 48,
};
static const uint8_t
WUFFS_GIF__ICCRGBG1012[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
73, 67, 67, 82, 71, 66, 71, 49,
48, 49, 50,
};
static const uint8_t
WUFFS_GIF__XMPDATAXMP[11] WUFFS_BASE__POTENTIALLY_UNUSED = {
88, 77, 80, 32, 68, 97, 116, 97,
88, 77, 80,
};
#define WUFFS_GIF__QUIRKS_BASE 1041635328
#define WUFFS_GIF__QUIRKS_COUNT 7
// ---------------- Private Initializer Prototypes
// ---------------- Private Function Prototypes
static wuffs_base__status
wuffs_gif__decoder__skip_frame(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__empty_struct
wuffs_gif__decoder__reset_gc(
wuffs_gif__decoder* self);
static wuffs_base__status
wuffs_gif__decoder__decode_up_to_id_part1(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_gif__decoder__decode_header(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_gif__decoder__decode_lsd(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_gif__decoder__decode_extension(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_gif__decoder__skip_blocks(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_gif__decoder__decode_ae(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_gif__decoder__decode_gc(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_gif__decoder__decode_id_part0(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_gif__decoder__decode_id_part1(
wuffs_gif__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend);
static wuffs_base__status
wuffs_gif__decoder__decode_id_part2(
wuffs_gif__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf);
static wuffs_base__status
wuffs_gif__decoder__copy_to_image_buffer(
wuffs_gif__decoder* self,
wuffs_base__pixel_buffer* a_pb,
wuffs_base__slice_u8 a_src);
// ---------------- VTables
const wuffs_base__image_decoder__func_ptrs
wuffs_gif__decoder__func_ptrs_for__wuffs_base__image_decoder = {
(wuffs_base__status(*)(void*,
wuffs_base__pixel_buffer*,
wuffs_base__io_buffer*,
wuffs_base__pixel_blend,
wuffs_base__slice_u8,
wuffs_base__decode_frame_options*))(&wuffs_gif__decoder__decode_frame),
(wuffs_base__status(*)(void*,
wuffs_base__frame_config*,
wuffs_base__io_buffer*))(&wuffs_gif__decoder__decode_frame_config),
(wuffs_base__status(*)(void*,
wuffs_base__image_config*,
wuffs_base__io_buffer*))(&wuffs_gif__decoder__decode_image_config),
(wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_gif__decoder__frame_dirty_rect),
(uint32_t(*)(const void*))(&wuffs_gif__decoder__num_animation_loops),
(uint64_t(*)(const void*))(&wuffs_gif__decoder__num_decoded_frame_configs),
(uint64_t(*)(const void*))(&wuffs_gif__decoder__num_decoded_frames),
(wuffs_base__status(*)(void*,
uint64_t,
uint64_t))(&wuffs_gif__decoder__restart_frame),
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_gif__decoder__set_quirk_enabled),
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_gif__decoder__set_report_metadata),
(wuffs_base__status(*)(void*,
wuffs_base__io_buffer*,
wuffs_base__more_information*,
wuffs_base__io_buffer*))(&wuffs_gif__decoder__tell_me_more),
(wuffs_base__range_ii_u64(*)(const void*))(&wuffs_gif__decoder__workbuf_len),
};
// ---------------- Initializer Implementations
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_gif__decoder__initialize(
wuffs_gif__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options){
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (sizeof(*self) != sizeof_star_self) {
return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
}
if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
(((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
}
if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
// The whole point of this if-check is to detect an uninitialized *self.
// We disable the warning on GCC. Clang-5.0 does not have this warning.
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
if (self->private_impl.magic != 0) {
return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
}
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
} else {
if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
memset(self, 0, sizeof(*self));
options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
} else {
memset(&(self->private_impl), 0, sizeof(self->private_impl));
}
}
{
wuffs_base__status z = wuffs_lzw__decoder__initialize(
&self->private_data.f_lzw, sizeof(self->private_data.f_lzw), WUFFS_VERSION, options);
if (z.repr) {
return z;
}
}
self->private_impl.magic = WUFFS_BASE__MAGIC;
self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
wuffs_base__image_decoder__vtable_name;
self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
(const void*)(&wuffs_gif__decoder__func_ptrs_for__wuffs_base__image_decoder);
return wuffs_base__make_status(NULL);
}
wuffs_gif__decoder*
wuffs_gif__decoder__alloc() {
wuffs_gif__decoder* x =
(wuffs_gif__decoder*)(calloc(sizeof(wuffs_gif__decoder), 1));
if (!x) {
return NULL;
}
if (wuffs_gif__decoder__initialize(
x, sizeof(wuffs_gif__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
free(x);
return NULL;
}
return x;
}
size_t
sizeof__wuffs_gif__decoder() {
return sizeof(wuffs_gif__decoder);
}
// ---------------- Function Implementations
// -------- func gif.decoder.set_quirk_enabled
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_gif__decoder__set_quirk_enabled(
wuffs_gif__decoder* self,
uint32_t a_quirk,
bool a_enabled) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
if ((self->private_impl.f_call_sequence == 0) && (a_quirk >= 1041635328)) {
a_quirk -= 1041635328;
if (a_quirk < 7) {
self->private_impl.f_quirks[a_quirk] = a_enabled;
}
}
return wuffs_base__make_empty_struct();
}
// -------- func gif.decoder.decode_image_config
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_gif__decoder__decode_image_config(
wuffs_gif__decoder* self,
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 1)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
bool v_ffio = false;
uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_call_sequence != 0) {
status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
goto exit;
} else if ( ! self->private_impl.f_seen_header) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_gif__decoder__decode_header(self, a_src);
if (status.repr) {
goto suspend;
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
status = wuffs_gif__decoder__decode_lsd(self, a_src);
if (status.repr) {
goto suspend;
}
self->private_impl.f_seen_header = true;
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
status = wuffs_gif__decoder__decode_up_to_id_part1(self, a_src);
if (status.repr) {
goto suspend;
}
v_ffio = ! self->private_impl.f_gc_has_transparent_index;
if ( ! self->private_impl.f_quirks[2]) {
v_ffio = (v_ffio &&
(self->private_impl.f_frame_rect_x0 == 0) &&
(self->private_impl.f_frame_rect_y0 == 0) &&
(self->private_impl.f_frame_rect_x1 == self->private_impl.f_width) &&
(self->private_impl.f_frame_rect_y1 == self->private_impl.f_height));
} else if (v_ffio) {
self->private_impl.f_black_color_u32_argb_premul = 4278190080;
}
if (self->private_impl.f_background_color_u32_argb_premul == 77) {
self->private_impl.f_background_color_u32_argb_premul = self->private_impl.f_black_color_u32_argb_premul;
}
if (a_dst != NULL) {
wuffs_base__image_config__set(
a_dst,
2198077448,
0,
self->private_impl.f_width,
self->private_impl.f_height,
self->private_impl.f_frame_config_io_position,
v_ffio);
}
if (self->private_impl.f_call_sequence == 0) {
self->private_impl.f_call_sequence = 32;
}
goto ok;
ok:
self->private_impl.p_decode_image_config[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
goto exit;
exit:
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func gif.decoder.set_report_metadata
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_gif__decoder__set_report_metadata(
wuffs_gif__decoder* self,
uint32_t a_fourcc,
bool a_report) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
if (a_fourcc == 1229144912) {
self->private_impl.f_report_metadata_iccp = a_report;
} else if (a_fourcc == 1481461792) {
self->private_impl.f_report_metadata_xmp = a_report;
}
return wuffs_base__make_empty_struct();
}
// -------- func gif.decoder.tell_me_more
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_gif__decoder__tell_me_more(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 2)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint64_t v_chunk_length = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_tell_me_more[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if ((self->private_impl.f_call_sequence & 16) == 0) {
status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
goto exit;
}
if (self->private_impl.f_metadata_fourcc == 0) {
status = wuffs_base__make_status(wuffs_base__error__no_more_information);
goto exit;
}
while (true) {
label__0__continue:;
while (true) {
if (wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) != self->private_impl.f_metadata_io_position) {
if (a_minfo != NULL) {
wuffs_base__more_information__set(a_minfo,
2,
0,
self->private_impl.f_metadata_io_position,
0,
0);
}
status = wuffs_base__make_status(wuffs_base__suspension__mispositioned_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
goto label__0__continue;
}
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
if (a_minfo != NULL) {
wuffs_base__more_information__set(a_minfo,
0,
0,
0,
0,
0);
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
goto label__0__continue;
}
goto label__0__break;
}
label__0__break:;
v_chunk_length = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src)));
if (v_chunk_length <= 0) {
iop_a_src += 1;
goto label__1__break;
}
if (self->private_impl.f_metadata_fourcc == 1481461792) {
v_chunk_length += 1;
} else {
iop_a_src += 1;
}
self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add(wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))), v_chunk_length);
if (a_minfo != NULL) {
wuffs_base__more_information__set(a_minfo,
3,
self->private_impl.f_metadata_fourcc,
0,
wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))),
self->private_impl.f_metadata_io_position);
}
status = wuffs_base__make_status(wuffs_base__suspension__even_more_information);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
}
label__1__break:;
if (a_minfo != NULL) {
wuffs_base__more_information__set(a_minfo,
3,
self->private_impl.f_metadata_fourcc,
0,
self->private_impl.f_metadata_io_position,
self->private_impl.f_metadata_io_position);
}
self->private_impl.f_call_sequence &= 239;
self->private_impl.f_metadata_fourcc = 0;
self->private_impl.f_metadata_io_position = 0;
status = wuffs_base__make_status(NULL);
goto ok;
ok:
self->private_impl.p_tell_me_more[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func gif.decoder.num_animation_loops
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_gif__decoder__num_animation_loops(
const wuffs_gif__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
if (self->private_impl.f_seen_num_animation_loops_value) {
return self->private_impl.f_num_animation_loops_value;
}
if (self->private_impl.f_num_decoded_frame_configs_value > 1) {
return 1;
}
return 0;
}
// -------- func gif.decoder.num_decoded_frame_configs
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_gif__decoder__num_decoded_frame_configs(
const wuffs_gif__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
return self->private_impl.f_num_decoded_frame_configs_value;
}
// -------- func gif.decoder.num_decoded_frames
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_gif__decoder__num_decoded_frames(
const wuffs_gif__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
return self->private_impl.f_num_decoded_frames_value;
}
// -------- func gif.decoder.frame_dirty_rect
WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
wuffs_gif__decoder__frame_dirty_rect(
const wuffs_gif__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_rect_ie_u32();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_rect_ie_u32();
}
return wuffs_base__utility__make_rect_ie_u32(
wuffs_base__u32__min(self->private_impl.f_frame_rect_x0, self->private_impl.f_width),
wuffs_base__u32__min(self->private_impl.f_frame_rect_y0, self->private_impl.f_height),
wuffs_base__u32__min(self->private_impl.f_frame_rect_x1, self->private_impl.f_width),
wuffs_base__u32__min(self->private_impl.f_dirty_max_excl_y, self->private_impl.f_height));
}
// -------- func gif.decoder.workbuf_len
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_gif__decoder__workbuf_len(
const wuffs_gif__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
return wuffs_base__utility__make_range_ii_u64(0, 0);
}
// -------- func gif.decoder.restart_frame
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_gif__decoder__restart_frame(
wuffs_gif__decoder* self,
uint64_t a_index,
uint64_t a_io_position) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (self->private_impl.f_call_sequence < 32) {
return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
} else if (a_io_position == 0) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
self->private_impl.f_delayed_num_decoded_frames = false;
self->private_impl.f_frame_config_io_position = a_io_position;
self->private_impl.f_num_decoded_frame_configs_value = a_index;
self->private_impl.f_num_decoded_frames_value = a_index;
wuffs_gif__decoder__reset_gc(self);
self->private_impl.f_call_sequence = 40;
return wuffs_base__make_status(NULL);
}
// -------- func gif.decoder.decode_frame_config
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_gif__decoder__decode_frame_config(
wuffs_gif__decoder* self,
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 3)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_background_color = 0;
uint8_t v_flags = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
if (coro_susp_point) {
v_background_color = self->private_data.s_decode_frame_config[0].v_background_color;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
self->private_impl.f_dirty_max_excl_y = 0;
if ((self->private_impl.f_call_sequence & 16) != 0) {
status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
goto exit;
} else if (self->private_impl.f_call_sequence == 32) {
} else if (self->private_impl.f_call_sequence < 32) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_gif__decoder__decode_image_config(self, NULL, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
} else if (self->private_impl.f_call_sequence == 40) {
if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
status = wuffs_base__make_status(wuffs_base__error__bad_restart);
goto exit;
}
} else if (self->private_impl.f_call_sequence == 64) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
status = wuffs_gif__decoder__skip_frame(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
if (self->private_impl.f_call_sequence >= 96) {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
}
} else {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
}
if ((self->private_impl.f_num_decoded_frame_configs_value > 0) || (self->private_impl.f_call_sequence == 40)) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
status = wuffs_gif__decoder__decode_up_to_id_part1(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
if (self->private_impl.f_call_sequence >= 96) {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
}
}
v_background_color = self->private_impl.f_black_color_u32_argb_premul;
if ( ! self->private_impl.f_gc_has_transparent_index) {
v_background_color = self->private_impl.f_background_color_u32_argb_premul;
if (self->private_impl.f_quirks[1] && (self->private_impl.f_num_decoded_frame_configs_value == 0)) {
while (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
}
v_flags = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
if ((v_flags & 128) != 0) {
v_background_color = self->private_impl.f_black_color_u32_argb_premul;
}
}
}
if (a_dst != NULL) {
wuffs_base__frame_config__set(
a_dst,
wuffs_base__utility__make_rect_ie_u32(
wuffs_base__u32__min(self->private_impl.f_frame_rect_x0, self->private_impl.f_width),
wuffs_base__u32__min(self->private_impl.f_frame_rect_y0, self->private_impl.f_height),
wuffs_base__u32__min(self->private_impl.f_frame_rect_x1, self->private_impl.f_width),
wuffs_base__u32__min(self->private_impl.f_frame_rect_y1, self->private_impl.f_height)),
((wuffs_base__flicks)(self->private_impl.f_gc_duration)),
self->private_impl.f_num_decoded_frame_configs_value,
self->private_impl.f_frame_config_io_position,
self->private_impl.f_gc_disposal,
! self->private_impl.f_gc_has_transparent_index,
false,
v_background_color);
}
wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frame_configs_value, 1);
self->private_impl.f_call_sequence = 64;
ok:
self->private_impl.p_decode_frame_config[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
self->private_data.s_decode_frame_config[0].v_background_color = v_background_color;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func gif.decoder.skip_frame
static wuffs_base__status
wuffs_gif__decoder__skip_frame(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_flags = 0;
uint8_t v_lw = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_skip_frame[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
v_flags = t_0;
}
if ((v_flags & 128) != 0) {
self->private_data.s_skip_frame[0].scratch = (((uint32_t)(3)) << (1 + (v_flags & 7)));
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (self->private_data.s_skip_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_skip_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_skip_frame[0].scratch;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_1 = *iop_a_src++;
v_lw = t_1;
}
if (v_lw > 8) {
status = wuffs_base__make_status(wuffs_gif__error__bad_literal_width);
goto exit;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
status = wuffs_gif__decoder__skip_blocks(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
if (self->private_impl.f_quirks[0]) {
self->private_impl.f_delayed_num_decoded_frames = true;
} else {
wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1);
}
wuffs_gif__decoder__reset_gc(self);
self->private_impl.f_call_sequence = 32;
goto ok;
ok:
self->private_impl.p_skip_frame[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_skip_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func gif.decoder.decode_frame
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_gif__decoder__decode_frame(
wuffs_gif__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 4)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_call_sequence == 64) {
} else if (self->private_impl.f_call_sequence < 64) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_gif__decoder__decode_frame_config(self, NULL, a_src);
if (status.repr) {
goto suspend;
}
} else {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
}
if (self->private_impl.f_quirks[5] && ((self->private_impl.f_frame_rect_x0 == self->private_impl.f_frame_rect_x1) || (self->private_impl.f_frame_rect_y0 == self->private_impl.f_frame_rect_y1))) {
status = wuffs_base__make_status(wuffs_gif__error__bad_frame_size);
goto exit;
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
status = wuffs_gif__decoder__decode_id_part1(self, a_dst, a_src, a_blend);
if (status.repr) {
goto suspend;
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
status = wuffs_gif__decoder__decode_id_part2(self, a_dst, a_src, a_workbuf);
if (status.repr) {
goto suspend;
}
wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1);
wuffs_gif__decoder__reset_gc(self);
self->private_impl.f_call_sequence = 32;
ok:
self->private_impl.p_decode_frame[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0;
goto exit;
exit:
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func gif.decoder.reset_gc
static wuffs_base__empty_struct
wuffs_gif__decoder__reset_gc(
wuffs_gif__decoder* self) {
self->private_impl.f_gc_has_transparent_index = false;
self->private_impl.f_gc_transparent_index = 0;
self->private_impl.f_gc_disposal = 0;
self->private_impl.f_gc_duration = 0;
return wuffs_base__make_empty_struct();
}
// -------- func gif.decoder.decode_up_to_id_part1
static wuffs_base__status
wuffs_gif__decoder__decode_up_to_id_part1(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_block_type = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_up_to_id_part1[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if ((self->private_impl.f_frame_config_io_position == 0) || (self->private_impl.f_num_decoded_frame_configs_value > 0)) {
self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
}
while (true) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
v_block_type = t_0;
}
if (v_block_type == 33) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
status = wuffs_gif__decoder__decode_extension(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
} else if (v_block_type == 44) {
if (self->private_impl.f_delayed_num_decoded_frames) {
self->private_impl.f_delayed_num_decoded_frames = false;
wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1);
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
status = wuffs_gif__decoder__decode_id_part0(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
goto label__0__break;
} else {
if (self->private_impl.f_delayed_num_decoded_frames) {
self->private_impl.f_delayed_num_decoded_frames = false;
wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1);
}
self->private_impl.f_call_sequence = 96;
goto label__0__break;
}
}
label__0__break:;
goto ok;
ok:
self->private_impl.p_decode_up_to_id_part1[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_up_to_id_part1[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func gif.decoder.decode_header
static wuffs_base__status
wuffs_gif__decoder__decode_header(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_c[6] = {0};
uint32_t v_i = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_header[0];
if (coro_susp_point) {
memcpy(v_c, self->private_data.s_decode_header[0].v_c, sizeof(v_c));
v_i = self->private_data.s_decode_header[0].v_i;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
while (v_i < 6) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
v_c[v_i] = t_0;
}
v_i += 1;
}
if ((v_c[0] != 71) ||
(v_c[1] != 73) ||
(v_c[2] != 70) ||
(v_c[3] != 56) ||
((v_c[4] != 55) && (v_c[4] != 57)) ||
(v_c[5] != 97)) {
status = wuffs_base__make_status(wuffs_gif__error__bad_header);
goto exit;
}
goto ok;
ok:
self->private_impl.p_decode_header[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_header[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
memcpy(self->private_data.s_decode_header[0].v_c, v_c, sizeof(v_c));
self->private_data.s_decode_header[0].v_i = v_i;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func gif.decoder.decode_lsd
static wuffs_base__status
wuffs_gif__decoder__decode_lsd(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_flags = 0;
uint8_t v_background_color_index = 0;
uint32_t v_num_palette_entries = 0;
uint32_t v_i = 0;
uint32_t v_j = 0;
uint32_t v_argb = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_lsd[0];
if (coro_susp_point) {
v_flags = self->private_data.s_decode_lsd[0].v_flags;
v_background_color_index = self->private_data.s_decode_lsd[0].v_background_color_index;
v_num_palette_entries = self->private_data.s_decode_lsd[0].v_num_palette_entries;
v_i = self->private_data.s_decode_lsd[0].v_i;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint32_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_lsd[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_lsd[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
if (num_bits_0 == 8) {
t_0 = ((uint32_t)(*scratch));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0)) << 56;
}
}
self->private_impl.f_width = t_0;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
uint32_t t_1;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_lsd[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_lsd[0].scratch;
uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
if (num_bits_1 == 8) {
t_1 = ((uint32_t)(*scratch));
break;
}
num_bits_1 += 8;
*scratch |= ((uint64_t)(num_bits_1)) << 56;
}
}
self->private_impl.f_height = t_1;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_2 = *iop_a_src++;
v_flags = t_2;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_3 = *iop_a_src++;
v_background_color_index = t_3;
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src++;
v_i = 0;
self->private_impl.f_has_global_palette = ((v_flags & 128) != 0);
if (self->private_impl.f_has_global_palette) {
v_num_palette_entries = (((uint32_t)(1)) << (1 + (v_flags & 7)));
while (v_i < v_num_palette_entries) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
uint32_t t_4;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
t_4 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src)));
iop_a_src += 3;
} else {
self->private_data.s_decode_lsd[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_lsd[0].scratch;
uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
if (num_bits_4 == 16) {
t_4 = ((uint32_t)(*scratch >> 40));
break;
}
num_bits_4 += 8;
*scratch |= ((uint64_t)(num_bits_4));
}
}
v_argb = t_4;
}
v_argb |= 4278190080;
self->private_data.f_palettes[0][((4 * v_i) + 0)] = ((uint8_t)(((v_argb >> 0) & 255)));
self->private_data.f_palettes[0][((4 * v_i) + 1)] = ((uint8_t)(((v_argb >> 8) & 255)));
self->private_data.f_palettes[0][((4 * v_i) + 2)] = ((uint8_t)(((v_argb >> 16) & 255)));
self->private_data.f_palettes[0][((4 * v_i) + 3)] = ((uint8_t)(((v_argb >> 24) & 255)));
v_i += 1;
}
if (self->private_impl.f_quirks[2]) {
if ((v_background_color_index != 0) && (((uint32_t)(v_background_color_index)) < v_num_palette_entries)) {
v_j = (4 * ((uint32_t)(v_background_color_index)));
self->private_impl.f_background_color_u32_argb_premul = ((((uint32_t)(self->private_data.f_palettes[0][(v_j + 0)])) << 0) |
(((uint32_t)(self->private_data.f_palettes[0][(v_j + 1)])) << 8) |
(((uint32_t)(self->private_data.f_palettes[0][(v_j + 2)])) << 16) |
(((uint32_t)(self->private_data.f_palettes[0][(v_j + 3)])) << 24));
} else {
self->private_impl.f_background_color_u32_argb_premul = 77;
}
}
}
while (v_i < 256) {
self->private_data.f_palettes[0][((4 * v_i) + 0)] = 0;
self->private_data.f_palettes[0][((4 * v_i) + 1)] = 0;
self->private_data.f_palettes[0][((4 * v_i) + 2)] = 0;
self->private_data.f_palettes[0][((4 * v_i) + 3)] = 255;
v_i += 1;
}
goto ok;
ok:
self->private_impl.p_decode_lsd[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_lsd[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_decode_lsd[0].v_flags = v_flags;
self->private_data.s_decode_lsd[0].v_background_color_index = v_background_color_index;
self->private_data.s_decode_lsd[0].v_num_palette_entries = v_num_palette_entries;
self->private_data.s_decode_lsd[0].v_i = v_i;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func gif.decoder.decode_extension
static wuffs_base__status
wuffs_gif__decoder__decode_extension(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_label = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_extension[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
v_label = t_0;
}
if (v_label == 249) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
status = wuffs_gif__decoder__decode_gc(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
status = wuffs_base__make_status(NULL);
goto ok;
} else if (v_label == 255) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
status = wuffs_gif__decoder__decode_ae(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
status = wuffs_base__make_status(NULL);
goto ok;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
status = wuffs_gif__decoder__skip_blocks(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
ok:
self->private_impl.p_decode_extension[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_extension[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func gif.decoder.skip_blocks
static wuffs_base__status
wuffs_gif__decoder__skip_blocks(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_block_size = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_skip_blocks[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
while (true) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
v_block_size = t_0;
}
if (v_block_size == 0) {
status = wuffs_base__make_status(NULL);
goto ok;
}
self->private_data.s_skip_blocks[0].scratch = ((uint32_t)(v_block_size));
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (self->private_data.s_skip_blocks[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_skip_blocks[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_skip_blocks[0].scratch;
}
ok:
self->private_impl.p_skip_blocks[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_skip_blocks[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func gif.decoder.decode_ae
static wuffs_base__status
wuffs_gif__decoder__decode_ae(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_c = 0;
uint8_t v_block_size = 0;
bool v_is_animexts = false;
bool v_is_netscape = false;
bool v_is_iccp = false;
bool v_is_xmp = false;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_ae[0];
if (coro_susp_point) {
v_block_size = self->private_data.s_decode_ae[0].v_block_size;
v_is_animexts = self->private_data.s_decode_ae[0].v_is_animexts;
v_is_netscape = self->private_data.s_decode_ae[0].v_is_netscape;
v_is_iccp = self->private_data.s_decode_ae[0].v_is_iccp;
v_is_xmp = self->private_data.s_decode_ae[0].v_is_xmp;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
while (true) {
if (self->private_impl.f_metadata_fourcc != 0) {
status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
goto ok;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
v_block_size = t_0;
}
if (v_block_size == 0) {
status = wuffs_base__make_status(NULL);
goto ok;
}
if (v_block_size != 11) {
self->private_data.s_decode_ae[0].scratch = ((uint32_t)(v_block_size));
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (self->private_data.s_decode_ae[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_ae[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_ae[0].scratch;
goto label__goto_done__break;
}
v_is_animexts = true;
v_is_netscape = true;
v_is_iccp = true;
v_is_xmp = true;
v_block_size = 0;
while (v_block_size < 11) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_1 = *iop_a_src++;
v_c = t_1;
}
v_is_animexts = (v_is_animexts && (v_c == WUFFS_GIF__ANIMEXTS1DOT0[v_block_size]));
v_is_netscape = (v_is_netscape && (v_c == WUFFS_GIF__NETSCAPE2DOT0[v_block_size]));
v_is_iccp = (v_is_iccp && (v_c == WUFFS_GIF__ICCRGBG1012[v_block_size]));
v_is_xmp = (v_is_xmp && (v_c == WUFFS_GIF__XMPDATAXMP[v_block_size]));
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
v_block_size += 1;
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
}
if (v_is_animexts || v_is_netscape) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_2 = *iop_a_src++;
v_block_size = t_2;
}
if (v_block_size != 3) {
self->private_data.s_decode_ae[0].scratch = ((uint32_t)(v_block_size));
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
if (self->private_data.s_decode_ae[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_ae[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_ae[0].scratch;
goto label__goto_done__break;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_3 = *iop_a_src++;
v_c = t_3;
}
if (v_c != 1) {
self->private_data.s_decode_ae[0].scratch = 2;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
if (self->private_data.s_decode_ae[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_ae[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_ae[0].scratch;
goto label__goto_done__break;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
uint32_t t_4;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_4 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_ae[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_ae[0].scratch;
uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
if (num_bits_4 == 8) {
t_4 = ((uint32_t)(*scratch));
break;
}
num_bits_4 += 8;
*scratch |= ((uint64_t)(num_bits_4)) << 56;
}
}
self->private_impl.f_num_animation_loops_value = t_4;
}
self->private_impl.f_seen_num_animation_loops_value = true;
if ((0 < self->private_impl.f_num_animation_loops_value) && (self->private_impl.f_num_animation_loops_value <= 65535)) {
self->private_impl.f_num_animation_loops_value += 1;
}
} else if (self->private_impl.f_call_sequence >= 32) {
} else if (v_is_iccp && self->private_impl.f_report_metadata_iccp) {
self->private_impl.f_metadata_fourcc = 1229144912;
self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
self->private_impl.f_call_sequence = 16;
status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
goto ok;
} else if (v_is_xmp && self->private_impl.f_report_metadata_xmp) {
self->private_impl.f_metadata_fourcc = 1481461792;
self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
self->private_impl.f_call_sequence = 16;
status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
goto ok;
}
goto label__goto_done__break;
}
label__goto_done__break:;
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
status = wuffs_gif__decoder__skip_blocks(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
ok:
self->private_impl.p_decode_ae[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_ae[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_decode_ae[0].v_block_size = v_block_size;
self->private_data.s_decode_ae[0].v_is_animexts = v_is_animexts;
self->private_data.s_decode_ae[0].v_is_netscape = v_is_netscape;
self->private_data.s_decode_ae[0].v_is_iccp = v_is_iccp;
self->private_data.s_decode_ae[0].v_is_xmp = v_is_xmp;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func gif.decoder.decode_gc
static wuffs_base__status
wuffs_gif__decoder__decode_gc(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_c = 0;
uint8_t v_flags = 0;
uint16_t v_gc_duration_centiseconds = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_gc[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
v_c = t_0;
}
if (v_c != 4) {
status = wuffs_base__make_status(wuffs_gif__error__bad_graphic_control);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_1 = *iop_a_src++;
v_flags = t_1;
}
self->private_impl.f_gc_has_transparent_index = ((v_flags & 1) != 0);
v_flags = ((v_flags >> 2) & 7);
if (v_flags == 2) {
self->private_impl.f_gc_disposal = 1;
} else if ((v_flags == 3) || (v_flags == 4)) {
self->private_impl.f_gc_disposal = 2;
} else {
self->private_impl.f_gc_disposal = 0;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
uint16_t t_2;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
iop_a_src += 2;
} else {
self->private_data.s_decode_gc[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_gc[0].scratch;
uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
if (num_bits_2 == 8) {
t_2 = ((uint16_t)(*scratch));
break;
}
num_bits_2 += 8;
*scratch |= ((uint64_t)(num_bits_2)) << 56;
}
}
v_gc_duration_centiseconds = t_2;
}
self->private_impl.f_gc_duration = (((uint64_t)(v_gc_duration_centiseconds)) * 7056000);
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_3 = *iop_a_src++;
self->private_impl.f_gc_transparent_index = t_3;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_4 = *iop_a_src++;
v_c = t_4;
}
if (v_c != 0) {
status = wuffs_base__make_status(wuffs_gif__error__bad_graphic_control);
goto exit;
}
goto ok;
ok:
self->private_impl.p_decode_gc[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_gc[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func gif.decoder.decode_id_part0
static wuffs_base__status
wuffs_gif__decoder__decode_id_part0(
wuffs_gif__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_id_part0[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint32_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_id_part0[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
if (num_bits_0 == 8) {
t_0 = ((uint32_t)(*scratch));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0)) << 56;
}
}
self->private_impl.f_frame_rect_x0 = t_0;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
uint32_t t_1;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_id_part0[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch;
uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
if (num_bits_1 == 8) {
t_1 = ((uint32_t)(*scratch));
break;
}
num_bits_1 += 8;
*scratch |= ((uint64_t)(num_bits_1)) << 56;
}
}
self->private_impl.f_frame_rect_y0 = t_1;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
uint32_t t_2;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_2 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_id_part0[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch;
uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
if (num_bits_2 == 8) {
t_2 = ((uint32_t)(*scratch));
break;
}
num_bits_2 += 8;
*scratch |= ((uint64_t)(num_bits_2)) << 56;
}
}
self->private_impl.f_frame_rect_x1 = t_2;
}
self->private_impl.f_frame_rect_x1 += self->private_impl.f_frame_rect_x0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
uint32_t t_3;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_3 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_id_part0[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch;
uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
if (num_bits_3 == 8) {
t_3 = ((uint32_t)(*scratch));
break;
}
num_bits_3 += 8;
*scratch |= ((uint64_t)(num_bits_3)) << 56;
}
}
self->private_impl.f_frame_rect_y1 = t_3;
}
self->private_impl.f_frame_rect_y1 += self->private_impl.f_frame_rect_y0;
self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0;
self->private_impl.f_dst_y = self->private_impl.f_frame_rect_y0;
if ((self->private_impl.f_num_decoded_frame_configs_value == 0) && ! self->private_impl.f_quirks[4]) {
self->private_impl.f_width = wuffs_base__u32__max(self->private_impl.f_width, self->private_impl.f_frame_rect_x1);
self->private_impl.f_height = wuffs_base__u32__max(self->private_impl.f_height, self->private_impl.f_frame_rect_y1);
}
goto ok;
ok:
self->private_impl.p_decode_id_part0[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_id_part0[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func gif.decoder.decode_id_part1
static wuffs_base__status
wuffs_gif__decoder__decode_id_part1(
wuffs_gif__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_flags = 0;
uint8_t v_which_palette = 0;
uint32_t v_num_palette_entries = 0;
uint32_t v_i = 0;
uint32_t v_argb = 0;
wuffs_base__status v_status = wuffs_base__make_status(NULL);
uint8_t v_lw = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_id_part1[0];
if (coro_susp_point) {
v_which_palette = self->private_data.s_decode_id_part1[0].v_which_palette;
v_num_palette_entries = self->private_data.s_decode_id_part1[0].v_num_palette_entries;
v_i = self->private_data.s_decode_id_part1[0].v_i;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
v_flags = t_0;
}
if ((v_flags & 64) != 0) {
self->private_impl.f_interlace = 4;
} else {
self->private_impl.f_interlace = 0;
}
v_which_palette = 1;
if ((v_flags & 128) != 0) {
v_num_palette_entries = (((uint32_t)(1)) << (1 + (v_flags & 7)));
v_i = 0;
while (v_i < v_num_palette_entries) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
uint32_t t_1;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
t_1 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src)));
iop_a_src += 3;
} else {
self->private_data.s_decode_id_part1[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_id_part1[0].scratch;
uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
if (num_bits_1 == 16) {
t_1 = ((uint32_t)(*scratch >> 40));
break;
}
num_bits_1 += 8;
*scratch |= ((uint64_t)(num_bits_1));
}
}
v_argb = t_1;
}
v_argb |= 4278190080;
self->private_data.f_palettes[1][((4 * v_i) + 0)] = ((uint8_t)(((v_argb >> 0) & 255)));
self->private_data.f_palettes[1][((4 * v_i) + 1)] = ((uint8_t)(((v_argb >> 8) & 255)));
self->private_data.f_palettes[1][((4 * v_i) + 2)] = ((uint8_t)(((v_argb >> 16) & 255)));
self->private_data.f_palettes[1][((4 * v_i) + 3)] = ((uint8_t)(((v_argb >> 24) & 255)));
v_i += 1;
}
while (v_i < 256) {
self->private_data.f_palettes[1][((4 * v_i) + 0)] = 0;
self->private_data.f_palettes[1][((4 * v_i) + 1)] = 0;
self->private_data.f_palettes[1][((4 * v_i) + 2)] = 0;
self->private_data.f_palettes[1][((4 * v_i) + 3)] = 255;
v_i += 1;
}
} else if (self->private_impl.f_quirks[6] && ! self->private_impl.f_has_global_palette) {
status = wuffs_base__make_status(wuffs_gif__error__bad_palette);
goto exit;
} else if (self->private_impl.f_gc_has_transparent_index) {
wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_palettes[1], 1024), wuffs_base__make_slice_u8(self->private_data.f_palettes[0], 1024));
} else {
v_which_palette = 0;
}
if (self->private_impl.f_gc_has_transparent_index) {
self->private_data.f_palettes[1][((4 * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 0)] = 0;
self->private_data.f_palettes[1][((4 * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 1)] = 0;
self->private_data.f_palettes[1][((4 * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 2)] = 0;
self->private_data.f_palettes[1][((4 * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 3)] = 0;
}
v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
wuffs_base__pixel_buffer__pixel_format(a_dst),
wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
wuffs_base__utility__make_pixel_format(2198077448),
wuffs_base__make_slice_u8(self->private_data.f_palettes[v_which_palette], 1024),
a_blend);
if ( ! wuffs_base__status__is_ok(&v_status)) {
status = v_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
}
if (self->private_impl.f_previous_lzw_decode_ended_abruptly) {
wuffs_base__ignore_status(wuffs_lzw__decoder__initialize(&self->private_data.f_lzw,
sizeof (wuffs_lzw__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_2 = *iop_a_src++;
v_lw = t_2;
}
if (v_lw > 8) {
status = wuffs_base__make_status(wuffs_gif__error__bad_literal_width);
goto exit;
}
wuffs_lzw__decoder__set_literal_width(&self->private_data.f_lzw, ((uint32_t)(v_lw)));
self->private_impl.f_previous_lzw_decode_ended_abruptly = true;
ok:
self->private_impl.p_decode_id_part1[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_id_part1[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_decode_id_part1[0].v_which_palette = v_which_palette;
self->private_data.s_decode_id_part1[0].v_num_palette_entries = v_num_palette_entries;
self->private_data.s_decode_id_part1[0].v_i = v_i;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func gif.decoder.decode_id_part2
static wuffs_base__status
wuffs_gif__decoder__decode_id_part2(
wuffs_gif__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
wuffs_base__io_buffer empty_io_buffer = wuffs_base__empty_io_buffer();
wuffs_base__status status = wuffs_base__make_status(NULL);
uint64_t v_block_size = 0;
bool v_need_block_size = false;
uint32_t v_n_copied = 0;
uint64_t v_n_compressed = 0;
wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer();
wuffs_base__io_buffer* v_r = &u_r;
const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint64_t v_mark = 0;
wuffs_base__status v_lzw_status = wuffs_base__make_status(NULL);
wuffs_base__status v_copy_status = wuffs_base__make_status(NULL);
wuffs_base__slice_u8 v_uncompressed = {0};
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_id_part2[0];
if (coro_susp_point) {
v_block_size = self->private_data.s_decode_id_part2[0].v_block_size;
v_need_block_size = self->private_data.s_decode_id_part2[0].v_need_block_size;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
v_need_block_size = true;
label__outer__continue:;
while (true) {
if (v_need_block_size) {
v_need_block_size = false;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t t_0 = *iop_a_src++;
v_block_size = t_0;
}
}
if (v_block_size == 0) {
goto label__outer__break;
}
while (((uint64_t)(io2_a_src - iop_a_src)) == 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
}
if (self->private_impl.f_compressed_ri == self->private_impl.f_compressed_wi) {
self->private_impl.f_compressed_ri = 0;
self->private_impl.f_compressed_wi = 0;
}
while (self->private_impl.f_compressed_wi <= 3841) {
v_n_compressed = wuffs_base__u64__min(v_block_size, ((uint64_t)(io2_a_src - iop_a_src)));
if (v_n_compressed <= 0) {
goto label__0__break;
}
v_n_copied = wuffs_base__io_reader__limited_copy_u32_to_slice(
&iop_a_src, io2_a_src,((uint32_t)((v_n_compressed & 4294967295))), wuffs_base__make_slice_u8_ij(self->private_data.f_compressed, self->private_impl.f_compressed_wi, 4096));
wuffs_base__u64__sat_add_indirect(&self->private_impl.f_compressed_wi, ((uint64_t)(v_n_copied)));
wuffs_base__u64__sat_sub_indirect(&v_block_size, ((uint64_t)(v_n_copied)));
if (v_block_size > 0) {
goto label__0__break;
}
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
v_need_block_size = true;
goto label__0__break;
}
v_block_size = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src)));
iop_a_src += 1;
}
label__0__break:;
label__inner__continue:;
while (true) {
if ((self->private_impl.f_compressed_ri > self->private_impl.f_compressed_wi) || (self->private_impl.f_compressed_wi > 4096)) {
status = wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_ri_wi);
goto exit;
}
{
wuffs_base__io_buffer* o_0_v_r = v_r;
const uint8_t *o_0_iop_v_r = iop_v_r;
const uint8_t *o_0_io0_v_r = io0_v_r;
const uint8_t *o_0_io1_v_r = io1_v_r;
const uint8_t *o_0_io2_v_r = io2_v_r;
v_r = wuffs_base__io_reader__set(
&u_r,
&iop_v_r,
&io0_v_r,
&io1_v_r,
&io2_v_r,
wuffs_base__make_slice_u8_ij(self->private_data.f_compressed,
self->private_impl.f_compressed_ri,
self->private_impl.f_compressed_wi),
0);
v_mark = ((uint64_t)(iop_v_r - io0_v_r));
{
u_r.meta.ri = ((size_t)(iop_v_r - u_r.data.ptr));
wuffs_base__status t_1 = wuffs_lzw__decoder__transform_io(&self->private_data.f_lzw, &empty_io_buffer, v_r, wuffs_base__utility__empty_slice_u8());
v_lzw_status = t_1;
iop_v_r = u_r.data.ptr + u_r.meta.ri;
}
wuffs_base__u64__sat_add_indirect(&self->private_impl.f_compressed_ri, wuffs_base__io__count_since(v_mark, ((uint64_t)(iop_v_r - io0_v_r))));
v_r = o_0_v_r;
iop_v_r = o_0_iop_v_r;
io0_v_r = o_0_io0_v_r;
io1_v_r = o_0_io1_v_r;
io2_v_r = o_0_io2_v_r;
}
v_uncompressed = wuffs_lzw__decoder__flush(&self->private_data.f_lzw);
if (((uint64_t)(v_uncompressed.len)) > 0) {
v_copy_status = wuffs_gif__decoder__copy_to_image_buffer(self, a_dst, v_uncompressed);
if (wuffs_base__status__is_error(&v_copy_status)) {
status = v_copy_status;
goto exit;
}
}
if (wuffs_base__status__is_ok(&v_lzw_status)) {
self->private_impl.f_previous_lzw_decode_ended_abruptly = false;
if (v_need_block_size || (v_block_size > 0)) {
self->private_data.s_decode_id_part2[0].scratch = ((uint32_t)(v_block_size));
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
if (self->private_data.s_decode_id_part2[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_id_part2[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_id_part2[0].scratch;
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
status = wuffs_gif__decoder__skip_blocks(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
}
goto label__outer__break;
} else if (v_lzw_status.repr == wuffs_base__suspension__short_read) {
goto label__outer__continue;
} else if (v_lzw_status.repr == wuffs_base__suspension__short_write) {
goto label__inner__continue;
} else if (self->private_impl.f_quirks[3] && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1) && (self->private_impl.f_interlace == 0)) {
if (v_need_block_size || (v_block_size > 0)) {
self->private_data.s_decode_id_part2[0].scratch = ((uint32_t)(v_block_size));
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
if (self->private_data.s_decode_id_part2[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_id_part2[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_id_part2[0].scratch;
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
status = wuffs_gif__decoder__skip_blocks(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
}
goto label__outer__break;
}
status = v_lzw_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
}
}
label__outer__break:;
self->private_impl.f_compressed_ri = 0;
self->private_impl.f_compressed_wi = 0;
if ((self->private_impl.f_dst_y < self->private_impl.f_frame_rect_y1) && (self->private_impl.f_frame_rect_x0 != self->private_impl.f_frame_rect_x1) && (self->private_impl.f_frame_rect_y0 != self->private_impl.f_frame_rect_y1)) {
status = wuffs_base__make_status(wuffs_base__error__not_enough_data);
goto exit;
}
ok:
self->private_impl.p_decode_id_part2[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_id_part2[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_decode_id_part2[0].v_block_size = v_block_size;
self->private_data.s_decode_id_part2[0].v_need_block_size = v_need_block_size;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func gif.decoder.copy_to_image_buffer
static wuffs_base__status
wuffs_gif__decoder__copy_to_image_buffer(
wuffs_gif__decoder* self,
wuffs_base__pixel_buffer* a_pb,
wuffs_base__slice_u8 a_src) {
wuffs_base__slice_u8 v_dst = {0};
wuffs_base__slice_u8 v_src = {0};
uint64_t v_width_in_bytes = 0;
uint64_t v_n = 0;
uint64_t v_src_ri = 0;
wuffs_base__pixel_format v_pixfmt = {0};
uint32_t v_bytes_per_pixel = 0;
uint32_t v_bits_per_pixel = 0;
wuffs_base__table_u8 v_tab = {0};
uint64_t v_i = 0;
uint64_t v_j = 0;
uint32_t v_replicate_y0 = 0;
uint32_t v_replicate_y1 = 0;
wuffs_base__slice_u8 v_replicate_dst = {0};
wuffs_base__slice_u8 v_replicate_src = {0};
v_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_pb);
v_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_pixfmt);
if ((v_bits_per_pixel & 7) != 0) {
return wuffs_base__make_status(wuffs_base__error__unsupported_option);
}
v_bytes_per_pixel = (v_bits_per_pixel >> 3);
v_width_in_bytes = (((uint64_t)(self->private_impl.f_width)) * ((uint64_t)(v_bytes_per_pixel)));
v_tab = wuffs_base__pixel_buffer__plane(a_pb, 0);
label__0__continue:;
while (v_src_ri < ((uint64_t)(a_src.len))) {
v_src = wuffs_base__slice_u8__subslice_i(a_src, v_src_ri);
if (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1) {
if (self->private_impl.f_quirks[3]) {
return wuffs_base__make_status(NULL);
}
return wuffs_base__make_status(wuffs_base__error__too_much_data);
}
v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
v_dst = wuffs_base__slice_u8__subslice_j(v_dst, 0);
} else if (v_width_in_bytes < ((uint64_t)(v_dst.len))) {
v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_width_in_bytes);
}
v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_bytes_per_pixel)));
if (v_i < ((uint64_t)(v_dst.len))) {
v_j = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * ((uint64_t)(v_bytes_per_pixel)));
if ((v_i <= v_j) && (v_j <= ((uint64_t)(v_dst.len)))) {
v_dst = wuffs_base__slice_u8__subslice_ij(v_dst, v_i, v_j);
} else {
v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_i);
}
v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024), v_src);
wuffs_base__u64__sat_add_indirect(&v_src_ri, v_n);
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)((v_n & 4294967295))));
self->private_impl.f_dirty_max_excl_y = wuffs_base__u32__max(self->private_impl.f_dirty_max_excl_y, wuffs_base__u32__sat_add(self->private_impl.f_dst_y, 1));
}
if (self->private_impl.f_frame_rect_x1 <= self->private_impl.f_dst_x) {
self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0;
if (self->private_impl.f_interlace == 0) {
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_y, 1);
goto label__0__continue;
}
if ((self->private_impl.f_num_decoded_frames_value == 0) && ! self->private_impl.f_gc_has_transparent_index && (self->private_impl.f_interlace > 1)) {
v_replicate_src = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
v_replicate_y0 = wuffs_base__u32__sat_add(self->private_impl.f_dst_y, 1);
v_replicate_y1 = wuffs_base__u32__sat_add(self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_COUNT[self->private_impl.f_interlace])));
v_replicate_y1 = wuffs_base__u32__min(v_replicate_y1, self->private_impl.f_frame_rect_y1);
while (v_replicate_y0 < v_replicate_y1) {
v_replicate_dst = wuffs_base__table_u8__row_u32(v_tab, v_replicate_y0);
wuffs_base__slice_u8__copy_from_slice(v_replicate_dst, v_replicate_src);
v_replicate_y0 += 1;
}
self->private_impl.f_dirty_max_excl_y = wuffs_base__u32__max(self->private_impl.f_dirty_max_excl_y, v_replicate_y1);
}
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_DELTA[self->private_impl.f_interlace])));
while ((self->private_impl.f_interlace > 0) && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1)) {
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
self->private_impl.f_interlace -= 1;
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
self->private_impl.f_dst_y = wuffs_base__u32__sat_add(self->private_impl.f_frame_rect_y0, WUFFS_GIF__INTERLACE_START[self->private_impl.f_interlace]);
}
goto label__0__continue;
}
if (((uint64_t)(a_src.len)) == v_src_ri) {
goto label__0__break;
} else if (((uint64_t)(a_src.len)) < v_src_ri) {
return wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_ri_wi);
}
v_n = ((uint64_t)((self->private_impl.f_frame_rect_x1 - self->private_impl.f_dst_x)));
v_n = wuffs_base__u64__min(v_n, (((uint64_t)(a_src.len)) - v_src_ri));
wuffs_base__u64__sat_add_indirect(&v_src_ri, v_n);
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)((v_n & 4294967295))));
if (self->private_impl.f_frame_rect_x1 <= self->private_impl.f_dst_x) {
self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0;
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_DELTA[self->private_impl.f_interlace])));
while ((self->private_impl.f_interlace > 0) && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1)) {
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
self->private_impl.f_interlace -= 1;
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
self->private_impl.f_dst_y = wuffs_base__u32__sat_add(self->private_impl.f_frame_rect_y0, WUFFS_GIF__INTERLACE_START[self->private_impl.f_interlace]);
}
goto label__0__continue;
}
if (v_src_ri != ((uint64_t)(a_src.len))) {
return wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_ri_wi);
}
goto label__0__break;
}
label__0__break:;
return wuffs_base__make_status(NULL);
}
#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP)
// ---------------- Status Codes Implementations
const char wuffs_gzip__error__bad_checksum[] = "#gzip: bad checksum";
const char wuffs_gzip__error__bad_compression_method[] = "#gzip: bad compression method";
const char wuffs_gzip__error__bad_encoding_flags[] = "#gzip: bad encoding flags";
const char wuffs_gzip__error__bad_header[] = "#gzip: bad header";
// ---------------- Private Consts
// ---------------- Private Initializer Prototypes
// ---------------- Private Function Prototypes
// ---------------- VTables
const wuffs_base__io_transformer__func_ptrs
wuffs_gzip__decoder__func_ptrs_for__wuffs_base__io_transformer = {
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_gzip__decoder__set_quirk_enabled),
(wuffs_base__status(*)(void*,
wuffs_base__io_buffer*,
wuffs_base__io_buffer*,
wuffs_base__slice_u8))(&wuffs_gzip__decoder__transform_io),
(wuffs_base__range_ii_u64(*)(const void*))(&wuffs_gzip__decoder__workbuf_len),
};
// ---------------- Initializer Implementations
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_gzip__decoder__initialize(
wuffs_gzip__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options){
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (sizeof(*self) != sizeof_star_self) {
return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
}
if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
(((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
}
if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
// The whole point of this if-check is to detect an uninitialized *self.
// We disable the warning on GCC. Clang-5.0 does not have this warning.
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
if (self->private_impl.magic != 0) {
return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
}
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
} else {
if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
memset(self, 0, sizeof(*self));
options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
} else {
memset(&(self->private_impl), 0, sizeof(self->private_impl));
}
}
{
wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize(
&self->private_data.f_checksum, sizeof(self->private_data.f_checksum), WUFFS_VERSION, options);
if (z.repr) {
return z;
}
}
{
wuffs_base__status z = wuffs_deflate__decoder__initialize(
&self->private_data.f_flate, sizeof(self->private_data.f_flate), WUFFS_VERSION, options);
if (z.repr) {
return z;
}
}
self->private_impl.magic = WUFFS_BASE__MAGIC;
self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
wuffs_base__io_transformer__vtable_name;
self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
(const void*)(&wuffs_gzip__decoder__func_ptrs_for__wuffs_base__io_transformer);
return wuffs_base__make_status(NULL);
}
wuffs_gzip__decoder*
wuffs_gzip__decoder__alloc() {
wuffs_gzip__decoder* x =
(wuffs_gzip__decoder*)(calloc(sizeof(wuffs_gzip__decoder), 1));
if (!x) {
return NULL;
}
if (wuffs_gzip__decoder__initialize(
x, sizeof(wuffs_gzip__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
free(x);
return NULL;
}
return x;
}
size_t
sizeof__wuffs_gzip__decoder() {
return sizeof(wuffs_gzip__decoder);
}
// ---------------- Function Implementations
// -------- func gzip.decoder.set_quirk_enabled
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_gzip__decoder__set_quirk_enabled(
wuffs_gzip__decoder* self,
uint32_t a_quirk,
bool a_enabled) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
if (a_quirk == 1) {
self->private_impl.f_ignore_checksum = a_enabled;
}
return wuffs_base__make_empty_struct();
}
// -------- func gzip.decoder.workbuf_len
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_gzip__decoder__workbuf_len(
const wuffs_gzip__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
return wuffs_base__utility__make_range_ii_u64(1, 1);
}
// -------- func gzip.decoder.transform_io
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_gzip__decoder__transform_io(
wuffs_gzip__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 1)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_c = 0;
uint8_t v_flags = 0;
uint16_t v_xlen = 0;
uint64_t v_mark = 0;
uint32_t v_checksum_got = 0;
uint32_t v_decoded_length_got = 0;
wuffs_base__status v_status = wuffs_base__make_status(NULL);
uint32_t v_checksum_want = 0;
uint32_t v_decoded_length_want = 0;
uint8_t* iop_a_dst = NULL;
uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_transform_io[0];
if (coro_susp_point) {
v_flags = self->private_data.s_transform_io[0].v_flags;
v_checksum_got = self->private_data.s_transform_io[0].v_checksum_got;
v_decoded_length_got = self->private_data.s_transform_io[0].v_decoded_length_got;
v_checksum_want = self->private_data.s_transform_io[0].v_checksum_want;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
v_c = t_0;
}
if (v_c != 31) {
status = wuffs_base__make_status(wuffs_gzip__error__bad_header);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_1 = *iop_a_src++;
v_c = t_1;
}
if (v_c != 139) {
status = wuffs_base__make_status(wuffs_gzip__error__bad_header);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_2 = *iop_a_src++;
v_c = t_2;
}
if (v_c != 8) {
status = wuffs_base__make_status(wuffs_gzip__error__bad_compression_method);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_3 = *iop_a_src++;
v_flags = t_3;
}
self->private_data.s_transform_io[0].scratch = 6;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
if (self->private_data.s_transform_io[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_transform_io[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_transform_io[0].scratch;
if ((v_flags & 4) != 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
uint16_t t_4;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_4 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
iop_a_src += 2;
} else {
self->private_data.s_transform_io[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_transform_io[0].scratch;
uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
if (num_bits_4 == 8) {
t_4 = ((uint16_t)(*scratch));
break;
}
num_bits_4 += 8;
*scratch |= ((uint64_t)(num_bits_4)) << 56;
}
}
v_xlen = t_4;
}
self->private_data.s_transform_io[0].scratch = ((uint32_t)(v_xlen));
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
if (self->private_data.s_transform_io[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_transform_io[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_transform_io[0].scratch;
}
if ((v_flags & 8) != 0) {
while (true) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_5 = *iop_a_src++;
v_c = t_5;
}
if (v_c == 0) {
goto label__0__break;
}
}
label__0__break:;
}
if ((v_flags & 16) != 0) {
while (true) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_6 = *iop_a_src++;
v_c = t_6;
}
if (v_c == 0) {
goto label__1__break;
}
}
label__1__break:;
}
if ((v_flags & 2) != 0) {
self->private_data.s_transform_io[0].scratch = 2;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
if (self->private_data.s_transform_io[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_transform_io[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_transform_io[0].scratch;
}
if ((v_flags & 224) != 0) {
status = wuffs_base__make_status(wuffs_gzip__error__bad_encoding_flags);
goto exit;
}
while (true) {
v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
{
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
wuffs_base__status t_7 = wuffs_deflate__decoder__transform_io(&self->private_data.f_flate, a_dst, a_src, a_workbuf);
v_status = t_7;
if (a_dst) {
iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
}
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
}
if ( ! self->private_impl.f_ignore_checksum) {
v_checksum_got = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_checksum, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
v_decoded_length_got += ((uint32_t)((wuffs_base__io__count_since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst))) & 4294967295)));
}
if (wuffs_base__status__is_ok(&v_status)) {
goto label__2__break;
}
status = v_status;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(12);
}
label__2__break:;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
uint32_t t_8;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_transform_io[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_transform_io[0].scratch;
uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8;
if (num_bits_8 == 24) {
t_8 = ((uint32_t)(*scratch));
break;
}
num_bits_8 += 8;
*scratch |= ((uint64_t)(num_bits_8)) << 56;
}
}
v_checksum_want = t_8;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
uint32_t t_9;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_9 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_transform_io[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_transform_io[0].scratch;
uint32_t num_bits_9 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_9;
if (num_bits_9 == 24) {
t_9 = ((uint32_t)(*scratch));
break;
}
num_bits_9 += 8;
*scratch |= ((uint64_t)(num_bits_9)) << 56;
}
}
v_decoded_length_want = t_9;
}
if ( ! self->private_impl.f_ignore_checksum && ((v_checksum_got != v_checksum_want) || (v_decoded_length_got != v_decoded_length_want))) {
status = wuffs_base__make_status(wuffs_gzip__error__bad_checksum);
goto exit;
}
ok:
self->private_impl.p_transform_io[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
self->private_data.s_transform_io[0].v_flags = v_flags;
self->private_data.s_transform_io[0].v_checksum_got = v_checksum_got;
self->private_data.s_transform_io[0].v_decoded_length_got = v_decoded_length_got;
self->private_data.s_transform_io[0].v_checksum_want = v_checksum_want;
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON)
// ---------------- Status Codes Implementations
const char wuffs_json__error__bad_c0_control_code[] = "#json: bad C0 control code";
const char wuffs_json__error__bad_utf_8[] = "#json: bad UTF-8";
const char wuffs_json__error__bad_backslash_escape[] = "#json: bad backslash-escape";
const char wuffs_json__error__bad_input[] = "#json: bad input";
const char wuffs_json__error__bad_new_line_in_a_string[] = "#json: bad new-line in a string";
const char wuffs_json__error__bad_quirk_combination[] = "#json: bad quirk combination";
const char wuffs_json__error__unsupported_number_length[] = "#json: unsupported number length";
const char wuffs_json__error__unsupported_recursion_depth[] = "#json: unsupported recursion depth";
const char wuffs_json__error__internal_error_inconsistent_i_o[] = "#json: internal error: inconsistent I/O";
// ---------------- Private Consts
#define WUFFS_JSON__DECODER_NUMBER_LENGTH_MAX_INCL 99
static const uint8_t
WUFFS_JSON__LUT_BACKSLASHES[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 3, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 162, 0, 0, 0, 0, 5,
0, 0, 0, 0, 0, 0, 0, 175,
7, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 4,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 220, 0, 0, 0,
0, 1, 136, 0, 0, 2, 140, 0,
0, 0, 0, 0, 0, 0, 138, 0,
0, 0, 141, 0, 137, 0, 6, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
};
static const uint8_t
WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_QUIRKS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
0, 1, 3, 4, 5, 6, 7, 10,
};
static const uint8_t
WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_CHARS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
0, 7, 27, 10, 63, 39, 11, 0,
};
static const uint8_t
WUFFS_JSON__LUT_CHARS[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
128, 129, 130, 131, 132, 133, 134, 135,
136, 137, 138, 139, 140, 141, 142, 143,
144, 145, 146, 147, 148, 149, 150, 151,
152, 153, 154, 155, 156, 157, 158, 159,
0, 0, 1, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 2, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
32, 32, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3,
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4,
5, 5, 5, 5, 5, 32, 32, 32,
32, 32, 32, 32, 32, 32, 32, 32,
};
#define WUFFS_JSON__CLASS_WHITESPACE 0
#define WUFFS_JSON__CLASS_STRING 1
#define WUFFS_JSON__CLASS_COMMA 2
#define WUFFS_JSON__CLASS_COLON 3
#define WUFFS_JSON__CLASS_NUMBER 4
#define WUFFS_JSON__CLASS_OPEN_CURLY_BRACE 5
#define WUFFS_JSON__CLASS_CLOSE_CURLY_BRACE 6
#define WUFFS_JSON__CLASS_OPEN_SQUARE_BRACKET 7
#define WUFFS_JSON__CLASS_CLOSE_SQUARE_BRACKET 8
#define WUFFS_JSON__CLASS_FALSE 9
#define WUFFS_JSON__CLASS_TRUE 10
#define WUFFS_JSON__CLASS_NULL_NAN_INF 11
#define WUFFS_JSON__CLASS_COMMENT 12
#define WUFFS_JSON__EXPECT_VALUE 7858
#define WUFFS_JSON__EXPECT_NON_STRING_VALUE 7856
#define WUFFS_JSON__EXPECT_STRING 4098
#define WUFFS_JSON__EXPECT_COMMA 4100
#define WUFFS_JSON__EXPECT_COLON 4104
#define WUFFS_JSON__EXPECT_NUMBER 4112
#define WUFFS_JSON__EXPECT_CLOSE_CURLY_BRACE 4160
#define WUFFS_JSON__EXPECT_CLOSE_SQUARE_BRACKET 4352
static const uint8_t
WUFFS_JSON__LUT_CLASSES[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
15, 15, 15, 15, 15, 15, 15, 15,
15, 0, 0, 15, 15, 0, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
0, 15, 1, 15, 15, 15, 15, 15,
15, 15, 15, 11, 2, 4, 15, 12,
4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 3, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 11, 15, 15, 15, 15, 11, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 7, 15, 8, 15, 15,
15, 15, 15, 15, 15, 15, 9, 15,
15, 11, 15, 15, 15, 15, 11, 15,
15, 15, 15, 15, 10, 15, 15, 15,
15, 15, 15, 5, 15, 6, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
};
static const uint8_t
WUFFS_JSON__LUT_DECIMAL_DIGITS[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
128, 129, 130, 131, 132, 133, 134, 135,
136, 137, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
};
static const uint8_t
WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
128, 129, 130, 131, 132, 133, 134, 135,
136, 137, 0, 0, 0, 0, 0, 0,
0, 138, 139, 140, 141, 142, 143, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 138, 139, 140, 141, 142, 143, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
};
#define WUFFS_JSON__QUIRKS_BASE 1225364480
#define WUFFS_JSON__QUIRKS_COUNT 21
// ---------------- Private Initializer Prototypes
// ---------------- Private Function Prototypes
static uint32_t
wuffs_json__decoder__decode_number(
wuffs_json__decoder* self,
wuffs_base__io_buffer* a_src);
static uint32_t
wuffs_json__decoder__decode_digits(
wuffs_json__decoder* self,
wuffs_base__io_buffer* a_src,
uint32_t a_n);
static wuffs_base__status
wuffs_json__decoder__decode_leading(
wuffs_json__decoder* self,
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_json__decoder__decode_comment(
wuffs_json__decoder* self,
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_json__decoder__decode_inf_nan(
wuffs_json__decoder* self,
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_json__decoder__decode_trailer(
wuffs_json__decoder* self,
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src);
// ---------------- VTables
const wuffs_base__token_decoder__func_ptrs
wuffs_json__decoder__func_ptrs_for__wuffs_base__token_decoder = {
(wuffs_base__status(*)(void*,
wuffs_base__token_buffer*,
wuffs_base__io_buffer*,
wuffs_base__slice_u8))(&wuffs_json__decoder__decode_tokens),
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_json__decoder__set_quirk_enabled),
(wuffs_base__range_ii_u64(*)(const void*))(&wuffs_json__decoder__workbuf_len),
};
// ---------------- Initializer Implementations
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_json__decoder__initialize(
wuffs_json__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options){
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (sizeof(*self) != sizeof_star_self) {
return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
}
if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
(((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
}
if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
// The whole point of this if-check is to detect an uninitialized *self.
// We disable the warning on GCC. Clang-5.0 does not have this warning.
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
if (self->private_impl.magic != 0) {
return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
}
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
} else {
if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
memset(self, 0, sizeof(*self));
options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
} else {
memset(&(self->private_impl), 0, sizeof(self->private_impl));
}
}
self->private_impl.magic = WUFFS_BASE__MAGIC;
self->private_impl.vtable_for__wuffs_base__token_decoder.vtable_name =
wuffs_base__token_decoder__vtable_name;
self->private_impl.vtable_for__wuffs_base__token_decoder.function_pointers =
(const void*)(&wuffs_json__decoder__func_ptrs_for__wuffs_base__token_decoder);
return wuffs_base__make_status(NULL);
}
wuffs_json__decoder*
wuffs_json__decoder__alloc() {
wuffs_json__decoder* x =
(wuffs_json__decoder*)(calloc(sizeof(wuffs_json__decoder), 1));
if (!x) {
return NULL;
}
if (wuffs_json__decoder__initialize(
x, sizeof(wuffs_json__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
free(x);
return NULL;
}
return x;
}
size_t
sizeof__wuffs_json__decoder() {
return sizeof(wuffs_json__decoder);
}
// ---------------- Function Implementations
// -------- func json.decoder.set_quirk_enabled
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_json__decoder__set_quirk_enabled(
wuffs_json__decoder* self,
uint32_t a_quirk,
bool a_enabled) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
if (a_quirk >= 1225364480) {
a_quirk -= 1225364480;
if (a_quirk < 21) {
self->private_impl.f_quirks[a_quirk] = a_enabled;
}
}
return wuffs_base__make_empty_struct();
}
// -------- func json.decoder.workbuf_len
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_json__decoder__workbuf_len(
const wuffs_json__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
return wuffs_base__utility__empty_range_ii_u64();
}
// -------- func json.decoder.decode_tokens
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_json__decoder__decode_tokens(
wuffs_json__decoder* self,
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 1)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_vminor = 0;
uint32_t v_number_length = 0;
uint32_t v_number_status = 0;
uint32_t v_string_length = 0;
uint32_t v_whitespace_length = 0;
uint32_t v_depth = 0;
uint32_t v_stack_byte = 0;
uint32_t v_stack_bit = 0;
uint32_t v_match = 0;
uint32_t v_c4 = 0;
uint8_t v_c = 0;
uint8_t v_backslash = 0;
uint8_t v_char = 0;
uint8_t v_class = 0;
uint32_t v_multi_byte_utf8 = 0;
uint8_t v_backslash_x_ok = 0;
uint8_t v_backslash_x_value = 0;
uint32_t v_backslash_x_string = 0;
uint8_t v_uni4_ok = 0;
uint64_t v_uni4_string = 0;
uint32_t v_uni4_value = 0;
uint32_t v_uni4_high_surrogate = 0;
uint8_t v_uni8_ok = 0;
uint64_t v_uni8_string = 0;
uint32_t v_uni8_value = 0;
uint32_t v_expect = 0;
uint32_t v_expect_after_value = 0;
wuffs_base__token* iop_a_dst = NULL;
wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_tokens[0];
if (coro_susp_point) {
v_depth = self->private_data.s_decode_tokens[0].v_depth;
v_expect = self->private_data.s_decode_tokens[0].v_expect;
v_expect_after_value = self->private_data.s_decode_tokens[0].v_expect_after_value;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_end_of_data) {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
}
if (self->private_impl.f_quirks[18]) {
if (self->private_impl.f_quirks[11] || self->private_impl.f_quirks[12] || self->private_impl.f_quirks[17]) {
status = wuffs_base__make_status(wuffs_json__error__bad_quirk_combination);
goto exit;
}
}
if (self->private_impl.f_quirks[15] || self->private_impl.f_quirks[16]) {
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_json__decoder__decode_leading(self, a_dst, a_src);
if (a_dst) {
iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
}
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
}
v_expect = 7858;
label__outer__continue:;
while (true) {
while (true) {
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
goto label__outer__continue;
}
v_whitespace_length = 0;
v_c = 0;
v_class = 0;
while (true) {
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
if (v_whitespace_length > 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_whitespace_length = 0;
}
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_json__error__bad_input);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
goto label__outer__continue;
}
v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
v_class = WUFFS_JSON__LUT_CLASSES[v_c];
if (v_class != 0) {
goto label__ws__break;
}
iop_a_src += 1;
if (v_whitespace_length >= 65534) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(65535)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_whitespace_length = 0;
goto label__outer__continue;
}
v_whitespace_length += 1;
}
label__ws__break:;
if (v_whitespace_length > 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_whitespace_length = 0;
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
goto label__outer__continue;
}
}
if (0 == (v_expect & (((uint32_t)(1)) << v_class))) {
status = wuffs_base__make_status(wuffs_json__error__bad_input);
goto exit;
}
if (v_class == 1) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194579)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
iop_a_src += 1;
label__string_loop_outer__continue:;
while (true) {
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
goto label__string_loop_outer__continue;
}
v_string_length = 0;
label__string_loop_inner__continue:;
while (true) {
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
if (v_string_length > 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_string_length = 0;
}
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_json__error__bad_input);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
goto label__string_loop_outer__continue;
}
while (((uint64_t)(io2_a_src - iop_a_src)) > 4) {
v_c4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
if (0 != (WUFFS_JSON__LUT_CHARS[(255 & (v_c4 >> 0))] |
WUFFS_JSON__LUT_CHARS[(255 & (v_c4 >> 8))] |
WUFFS_JSON__LUT_CHARS[(255 & (v_c4 >> 16))] |
WUFFS_JSON__LUT_CHARS[(255 & (v_c4 >> 24))])) {
goto label__0__break;
}
iop_a_src += 4;
if (v_string_length > 65527) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)((v_string_length + 4))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_string_length = 0;
goto label__string_loop_outer__continue;
}
v_string_length += 4;
}
label__0__break:;
v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
v_char = WUFFS_JSON__LUT_CHARS[v_c];
if (v_char == 0) {
iop_a_src += 1;
if (v_string_length >= 65531) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(65532)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_string_length = 0;
goto label__string_loop_outer__continue;
}
v_string_length += 1;
goto label__string_loop_inner__continue;
} else if (v_char == 1) {
if (v_string_length != 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_string_length = 0;
}
goto label__string_loop_outer__break;
} else if (v_char == 2) {
if (v_string_length > 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_string_length = 0;
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
goto label__string_loop_outer__continue;
}
}
if (((uint64_t)(io2_a_src - iop_a_src)) < 2) {
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
goto label__string_loop_outer__continue;
}
v_c = ((uint8_t)((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8)));
v_backslash = WUFFS_JSON__LUT_BACKSLASHES[v_c];
if ((v_backslash & 128) != 0) {
iop_a_src += 2;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)((6291456 | ((uint32_t)((v_backslash & 127)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(2)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__string_loop_outer__continue;
} else if (v_backslash != 0) {
if (self->private_impl.f_quirks[WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_QUIRKS[(v_backslash & 7)]]) {
iop_a_src += 2;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)((6291456 | ((uint32_t)(WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_CHARS[(v_backslash & 7)]))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(2)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__string_loop_outer__continue;
}
} else if (v_c == 117) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 6) {
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
goto label__string_loop_outer__continue;
}
v_uni4_string = (((uint64_t)(wuffs_base__peek_u48le__no_bounds_check(iop_a_src))) >> 16);
v_uni4_value = 0;
v_uni4_ok = 128;
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 0))];
v_uni4_ok &= v_c;
v_uni4_value |= (((uint32_t)((v_c & 15))) << 12);
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 8))];
v_uni4_ok &= v_c;
v_uni4_value |= (((uint32_t)((v_c & 15))) << 8);
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 16))];
v_uni4_ok &= v_c;
v_uni4_value |= (((uint32_t)((v_c & 15))) << 4);
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 24))];
v_uni4_ok &= v_c;
v_uni4_value |= (((uint32_t)((v_c & 15))) << 0);
if (v_uni4_ok == 0) {
} else if ((v_uni4_value < 55296) || (57343 < v_uni4_value)) {
iop_a_src += 6;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)((6291456 | v_uni4_value))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(6)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__string_loop_outer__continue;
} else if (v_uni4_value >= 56320) {
} else {
if (((uint64_t)(io2_a_src - iop_a_src)) < 12) {
if (a_src && a_src->meta.closed) {
if (self->private_impl.f_quirks[20]) {
iop_a_src += 6;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(6)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__string_loop_outer__continue;
}
status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
goto label__string_loop_outer__continue;
}
v_uni4_string = (wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 4) >> 16);
if (((255 & (v_uni4_string >> 0)) != 92) || ((255 & (v_uni4_string >> 8)) != 117)) {
v_uni4_high_surrogate = 0;
v_uni4_value = 0;
v_uni4_ok = 0;
} else {
v_uni4_high_surrogate = (65536 + ((v_uni4_value - 55296) << 10));
v_uni4_value = 0;
v_uni4_ok = 128;
v_uni4_string >>= 16;
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 0))];
v_uni4_ok &= v_c;
v_uni4_value |= (((uint32_t)((v_c & 15))) << 12);
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 8))];
v_uni4_ok &= v_c;
v_uni4_value |= (((uint32_t)((v_c & 15))) << 8);
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 16))];
v_uni4_ok &= v_c;
v_uni4_value |= (((uint32_t)((v_c & 15))) << 4);
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 24))];
v_uni4_ok &= v_c;
v_uni4_value |= (((uint32_t)((v_c & 15))) << 0);
}
if ((v_uni4_ok != 0) && (56320 <= v_uni4_value) && (v_uni4_value <= 57343)) {
v_uni4_value -= 56320;
iop_a_src += 12;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)((6291456 | v_uni4_high_surrogate | v_uni4_value))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(12)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__string_loop_outer__continue;
}
}
if (self->private_impl.f_quirks[20]) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 6) {
status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
goto exit;
}
iop_a_src += 6;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(6)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__string_loop_outer__continue;
}
} else if ((v_c == 85) && self->private_impl.f_quirks[2]) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 10) {
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
goto label__string_loop_outer__continue;
}
v_uni8_string = wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 2);
v_uni8_value = 0;
v_uni8_ok = 128;
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 0))];
v_uni8_ok &= v_c;
v_uni8_value |= (((uint32_t)((v_c & 15))) << 28);
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 8))];
v_uni8_ok &= v_c;
v_uni8_value |= (((uint32_t)((v_c & 15))) << 24);
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 16))];
v_uni8_ok &= v_c;
v_uni8_value |= (((uint32_t)((v_c & 15))) << 20);
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 24))];
v_uni8_ok &= v_c;
v_uni8_value |= (((uint32_t)((v_c & 15))) << 16);
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 32))];
v_uni8_ok &= v_c;
v_uni8_value |= (((uint32_t)((v_c & 15))) << 12);
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 40))];
v_uni8_ok &= v_c;
v_uni8_value |= (((uint32_t)((v_c & 15))) << 8);
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 48))];
v_uni8_ok &= v_c;
v_uni8_value |= (((uint32_t)((v_c & 15))) << 4);
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 56))];
v_uni8_ok &= v_c;
v_uni8_value |= (((uint32_t)((v_c & 15))) << 0);
if (v_uni8_ok == 0) {
} else if ((v_uni8_value < 55296) || ((57343 < v_uni8_value) && (v_uni8_value <= 1114111))) {
iop_a_src += 10;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)((6291456 | (v_uni8_value & 2097151)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(10)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__string_loop_outer__continue;
} else if (self->private_impl.f_quirks[20]) {
iop_a_src += 10;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(10)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__string_loop_outer__continue;
}
} else if ((v_c == 120) && self->private_impl.f_quirks[9]) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 4) {
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
goto label__string_loop_outer__continue;
}
v_backslash_x_string = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
v_backslash_x_ok = 128;
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_backslash_x_string >> 16))];
v_backslash_x_ok &= v_c;
v_backslash_x_value = ((uint8_t)(((v_c & 15) << 4)));
v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_backslash_x_string >> 24))];
v_backslash_x_ok &= v_c;
v_backslash_x_value = ((uint8_t)((v_backslash_x_value | (v_c & 15))));
if ((v_backslash_x_ok == 0) || ((v_backslash_x_string & 65535) != 30812)) {
status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
goto exit;
}
iop_a_src += 4;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)((6291456 | ((uint32_t)(v_backslash_x_value))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(4)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__string_loop_outer__continue;
}
status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape);
goto exit;
} else if (v_char == 3) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 2) {
if (v_string_length > 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_string_length = 0;
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
goto label__string_loop_outer__continue;
}
}
if (a_src && a_src->meta.closed) {
if (self->private_impl.f_quirks[20]) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
iop_a_src += 1;
goto label__string_loop_outer__continue;
}
status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
goto label__string_loop_outer__continue;
}
v_multi_byte_utf8 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
if ((v_multi_byte_utf8 & 49152) == 32768) {
v_multi_byte_utf8 = ((1984 & ((uint32_t)(v_multi_byte_utf8 << 6))) | (63 & (v_multi_byte_utf8 >> 8)));
iop_a_src += 2;
if (v_string_length >= 65528) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)((v_string_length + 2))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_string_length = 0;
goto label__string_loop_outer__continue;
}
v_string_length += 2;
goto label__string_loop_inner__continue;
}
} else if (v_char == 4) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 3) {
if (v_string_length > 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_string_length = 0;
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
goto label__string_loop_outer__continue;
}
}
if (a_src && a_src->meta.closed) {
if (self->private_impl.f_quirks[20]) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
iop_a_src += 1;
goto label__string_loop_outer__continue;
}
status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(12);
goto label__string_loop_outer__continue;
}
v_multi_byte_utf8 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
if ((v_multi_byte_utf8 & 12632064) == 8421376) {
v_multi_byte_utf8 = ((61440 & ((uint32_t)(v_multi_byte_utf8 << 12))) | (4032 & (v_multi_byte_utf8 >> 2)) | (63 & (v_multi_byte_utf8 >> 16)));
if ((2047 < v_multi_byte_utf8) && ((v_multi_byte_utf8 < 55296) || (57343 < v_multi_byte_utf8))) {
iop_a_src += 3;
if (v_string_length >= 65528) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)((v_string_length + 3))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_string_length = 0;
goto label__string_loop_outer__continue;
}
v_string_length += 3;
goto label__string_loop_inner__continue;
}
}
} else if (v_char == 5) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 4) {
if (v_string_length > 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_string_length = 0;
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
goto label__string_loop_outer__continue;
}
}
if (a_src && a_src->meta.closed) {
if (self->private_impl.f_quirks[20]) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
iop_a_src += 1;
goto label__string_loop_outer__continue;
}
status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(13);
goto label__string_loop_outer__continue;
}
v_multi_byte_utf8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
if ((v_multi_byte_utf8 & 3233857536) == 2155905024) {
v_multi_byte_utf8 = ((1835008 & ((uint32_t)(v_multi_byte_utf8 << 18))) |
(258048 & ((uint32_t)(v_multi_byte_utf8 << 4))) |
(4032 & (v_multi_byte_utf8 >> 10)) |
(63 & (v_multi_byte_utf8 >> 24)));
if ((65535 < v_multi_byte_utf8) && (v_multi_byte_utf8 <= 1114111)) {
iop_a_src += 4;
if (v_string_length >= 65528) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)((v_string_length + 4))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_string_length = 0;
goto label__string_loop_outer__continue;
}
v_string_length += 4;
goto label__string_loop_inner__continue;
}
}
}
if (v_string_length > 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_string_length = 0;
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
goto label__string_loop_outer__continue;
}
}
if ((v_char & 128) != 0) {
if (self->private_impl.f_quirks[0]) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)((6291456 | ((uint32_t)((v_char & 127)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
iop_a_src += 1;
goto label__string_loop_outer__continue;
}
if (v_char == 138) {
status = wuffs_base__make_status(wuffs_json__error__bad_new_line_in_a_string);
goto exit;
}
status = wuffs_base__make_status(wuffs_json__error__bad_c0_control_code);
goto exit;
}
if (self->private_impl.f_quirks[20]) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
iop_a_src += 1;
goto label__string_loop_outer__continue;
}
status = wuffs_base__make_status(wuffs_json__error__bad_utf_8);
goto exit;
}
}
label__string_loop_outer__break:;
label__1__continue:;
while (true) {
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_json__error__bad_input);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(14);
goto label__1__continue;
}
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(15);
goto label__1__continue;
}
iop_a_src += 1;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4194579)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__1__break;
}
label__1__break:;
if (0 == (v_expect & (((uint32_t)(1)) << 4))) {
v_expect = 4104;
goto label__outer__continue;
}
goto label__goto_parsed_a_leaf_value__break;
} else if (v_class == 2) {
iop_a_src += 1;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
if (0 == (v_expect & (((uint32_t)(1)) << 8))) {
if (self->private_impl.f_quirks[13]) {
v_expect = 4162;
} else {
v_expect = 4098;
}
} else {
if (self->private_impl.f_quirks[13]) {
v_expect = 8114;
} else {
v_expect = 7858;
}
}
goto label__outer__continue;
} else if (v_class == 3) {
iop_a_src += 1;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_expect = 7858;
goto label__outer__continue;
} else if (v_class == 4) {
while (true) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
v_number_length = wuffs_json__decoder__decode_number(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
v_number_status = (v_number_length >> 8);
v_vminor = 10486787;
if ((v_number_length & 128) != 0) {
v_vminor = 10486785;
}
v_number_length = (v_number_length & 127);
if (v_number_status == 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(v_number_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__2__break;
}
while (v_number_length > 0) {
v_number_length -= 1;
if (iop_a_src > io1_a_src) {
iop_a_src--;
} else {
status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
goto exit;
}
}
if (v_number_status == 1) {
if (self->private_impl.f_quirks[14]) {
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
status = wuffs_json__decoder__decode_inf_nan(self, a_dst, a_src);
if (a_dst) {
iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
}
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
goto label__2__break;
}
status = wuffs_base__make_status(wuffs_json__error__bad_input);
goto exit;
} else if (v_number_status == 2) {
status = wuffs_base__make_status(wuffs_json__error__unsupported_number_length);
goto exit;
} else {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(17);
while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(18);
}
}
}
label__2__break:;
goto label__goto_parsed_a_leaf_value__break;
} else if (v_class == 5) {
v_vminor = 2113553;
if (v_depth == 0) {
} else if (0 != (v_expect_after_value & (((uint32_t)(1)) << 6))) {
v_vminor = 2113601;
} else {
v_vminor = 2113569;
}
if (v_depth >= 1024) {
status = wuffs_base__make_status(wuffs_json__error__unsupported_recursion_depth);
goto exit;
}
v_stack_byte = (v_depth / 32);
v_stack_bit = (v_depth & 31);
self->private_data.f_stack[v_stack_byte] |= (((uint32_t)(1)) << v_stack_bit);
v_depth += 1;
iop_a_src += 1;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_expect = 4162;
v_expect_after_value = 4164;
goto label__outer__continue;
} else if (v_class == 6) {
iop_a_src += 1;
if (v_depth <= 1) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(2101314)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__outer__break;
}
v_depth -= 1;
v_stack_byte = ((v_depth - 1) / 32);
v_stack_bit = ((v_depth - 1) & 31);
if (0 == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1)) << v_stack_bit))) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(2105410)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_expect = 4356;
v_expect_after_value = 4356;
} else {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(2113602)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_expect = 4164;
v_expect_after_value = 4164;
}
goto label__outer__continue;
} else if (v_class == 7) {
v_vminor = 2105361;
if (v_depth == 0) {
} else if (0 != (v_expect_after_value & (((uint32_t)(1)) << 6))) {
v_vminor = 2105409;
} else {
v_vminor = 2105377;
}
if (v_depth >= 1024) {
status = wuffs_base__make_status(wuffs_json__error__unsupported_recursion_depth);
goto exit;
}
v_stack_byte = (v_depth / 32);
v_stack_bit = (v_depth & 31);
self->private_data.f_stack[v_stack_byte] &= (4294967295 ^ (((uint32_t)(1)) << v_stack_bit));
v_depth += 1;
iop_a_src += 1;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_expect = 8114;
v_expect_after_value = 4356;
goto label__outer__continue;
} else if (v_class == 8) {
iop_a_src += 1;
if (v_depth <= 1) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(2101282)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__outer__break;
}
v_depth -= 1;
v_stack_byte = ((v_depth - 1) / 32);
v_stack_bit = ((v_depth - 1) & 31);
if (0 == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1)) << v_stack_bit))) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(2105378)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_expect = 4356;
v_expect_after_value = 4356;
} else {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(2113570)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
v_expect = 4164;
v_expect_after_value = 4164;
}
goto label__outer__continue;
} else if (v_class == 9) {
v_match = wuffs_base__io_reader__match7(iop_a_src, io2_a_src, a_src,111546413966853);
if (v_match == 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(8388612)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(5)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
if (((uint64_t)(io2_a_src - iop_a_src)) < 5) {
status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
goto exit;
}
iop_a_src += 5;
goto label__goto_parsed_a_leaf_value__break;
} else if (v_match == 1) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(19);
goto label__outer__continue;
}
} else if (v_class == 10) {
v_match = wuffs_base__io_reader__match7(iop_a_src, io2_a_src, a_src,435762131972);
if (v_match == 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(8388616)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(4)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
if (((uint64_t)(io2_a_src - iop_a_src)) < 4) {
status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
goto exit;
}
iop_a_src += 4;
goto label__goto_parsed_a_leaf_value__break;
} else if (v_match == 1) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(20);
goto label__outer__continue;
}
} else if (v_class == 11) {
v_match = wuffs_base__io_reader__match7(iop_a_src, io2_a_src, a_src,465676103172);
if (v_match == 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(8388610)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(4)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
if (((uint64_t)(io2_a_src - iop_a_src)) < 4) {
status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o);
goto exit;
}
iop_a_src += 4;
goto label__goto_parsed_a_leaf_value__break;
} else if (v_match == 1) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(21);
goto label__outer__continue;
}
if (self->private_impl.f_quirks[14]) {
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
status = wuffs_json__decoder__decode_inf_nan(self, a_dst, a_src);
if (a_dst) {
iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
}
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
goto label__goto_parsed_a_leaf_value__break;
}
} else if (v_class == 12) {
if (self->private_impl.f_quirks[11] || self->private_impl.f_quirks[12]) {
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23);
status = wuffs_json__decoder__decode_comment(self, a_dst, a_src);
if (a_dst) {
iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
}
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
if (self->private_impl.f_comment_type > 0) {
goto label__outer__continue;
}
}
}
status = wuffs_base__make_status(wuffs_json__error__bad_input);
goto exit;
}
label__goto_parsed_a_leaf_value__break:;
if (v_depth == 0) {
goto label__outer__break;
}
v_expect = v_expect_after_value;
}
label__outer__break:;
if (self->private_impl.f_quirks[17] || self->private_impl.f_quirks[18]) {
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24);
status = wuffs_json__decoder__decode_trailer(self, a_dst, a_src);
if (a_dst) {
iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
}
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
}
self->private_impl.f_end_of_data = true;
ok:
self->private_impl.p_decode_tokens[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_tokens[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
self->private_data.s_decode_tokens[0].v_depth = v_depth;
self->private_data.s_decode_tokens[0].v_expect = v_expect;
self->private_data.s_decode_tokens[0].v_expect_after_value = v_expect_after_value;
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func json.decoder.decode_number
static uint32_t
wuffs_json__decoder__decode_number(
wuffs_json__decoder* self,
wuffs_base__io_buffer* a_src) {
uint8_t v_c = 0;
uint32_t v_n = 0;
uint32_t v_floating_point = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
while (true) {
v_n = 0;
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
if ( ! (a_src && a_src->meta.closed)) {
v_n |= 768;
}
goto label__goto_done__break;
}
v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
if (v_c != 45) {
} else {
v_n += 1;
iop_a_src += 1;
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
if ( ! (a_src && a_src->meta.closed)) {
v_n |= 768;
}
v_n |= 256;
goto label__goto_done__break;
}
v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
}
if (v_c == 48) {
v_n += 1;
iop_a_src += 1;
} else {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (v_n > 99) {
goto label__goto_done__break;
}
}
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
if ( ! (a_src && a_src->meta.closed)) {
v_n |= 768;
}
goto label__goto_done__break;
}
v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
if (v_c != 46) {
} else {
if (v_n >= 99) {
v_n |= 512;
goto label__goto_done__break;
}
v_n += 1;
iop_a_src += 1;
v_floating_point = 128;
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (v_n > 99) {
goto label__goto_done__break;
}
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
if ( ! (a_src && a_src->meta.closed)) {
v_n |= 768;
}
goto label__goto_done__break;
}
v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
}
if ((v_c != 69) && (v_c != 101)) {
goto label__goto_done__break;
}
if (v_n >= 99) {
v_n |= 512;
goto label__goto_done__break;
}
v_n += 1;
iop_a_src += 1;
v_floating_point = 128;
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
if ( ! (a_src && a_src->meta.closed)) {
v_n |= 768;
}
v_n |= 256;
goto label__goto_done__break;
}
v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
if ((v_c != 43) && (v_c != 45)) {
} else {
if (v_n >= 99) {
v_n |= 512;
goto label__goto_done__break;
}
v_n += 1;
iop_a_src += 1;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
goto label__goto_done__break;
}
label__goto_done__break:;
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return (v_n | v_floating_point);
}
// -------- func json.decoder.decode_digits
static uint32_t
wuffs_json__decoder__decode_digits(
wuffs_json__decoder* self,
wuffs_base__io_buffer* a_src,
uint32_t a_n) {
uint8_t v_c = 0;
uint32_t v_n = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
v_n = a_n;
while (true) {
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
if ( ! (a_src && a_src->meta.closed)) {
v_n |= 768;
}
goto label__0__break;
}
v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
if (0 == WUFFS_JSON__LUT_DECIMAL_DIGITS[v_c]) {
goto label__0__break;
}
if (v_n >= 99) {
v_n |= 512;
goto label__0__break;
}
v_n += 1;
iop_a_src += 1;
}
label__0__break:;
if (v_n == a_n) {
v_n |= 256;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return v_n;
}
// -------- func json.decoder.decode_leading
static wuffs_base__status
wuffs_json__decoder__decode_leading(
wuffs_json__decoder* self,
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_c = 0;
uint32_t v_u = 0;
wuffs_base__token* iop_a_dst = NULL;
wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_leading[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
self->private_impl.f_allow_leading_ars = self->private_impl.f_quirks[15];
self->private_impl.f_allow_leading_ubom = self->private_impl.f_quirks[16];
label__0__continue:;
while (self->private_impl.f_allow_leading_ars || self->private_impl.f_allow_leading_ubom) {
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
goto label__0__continue;
}
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
if (a_src && a_src->meta.closed) {
goto label__0__break;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
goto label__0__continue;
}
v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
if ((v_c == 30) && self->private_impl.f_allow_leading_ars) {
self->private_impl.f_allow_leading_ars = false;
iop_a_src += 1;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__0__continue;
} else if ((v_c == 239) && self->private_impl.f_allow_leading_ubom) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 3) {
if (a_src && a_src->meta.closed) {
goto label__0__break;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
goto label__0__continue;
}
v_u = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
if (v_u == 12565487) {
self->private_impl.f_allow_leading_ubom = false;
iop_a_src += 3;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(3)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
goto label__0__continue;
}
}
goto label__0__break;
}
label__0__break:;
ok:
self->private_impl.p_decode_leading[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_leading[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func json.decoder.decode_comment
static wuffs_base__status
wuffs_json__decoder__decode_comment(
wuffs_json__decoder* self,
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_c = 0;
uint16_t v_c2 = 0;
uint32_t v_length = 0;
wuffs_base__token* iop_a_dst = NULL;
wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_comment[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
self->private_impl.f_comment_type = 0;
label__0__continue:;
while ((((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) || (((uint64_t)(io2_a_src - iop_a_src)) <= 1)) {
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
goto label__0__continue;
}
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(NULL);
goto ok;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
}
v_c2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
if ((v_c2 == 10799) && self->private_impl.f_quirks[11]) {
iop_a_src += 2;
v_length = 2;
label__comment_block__continue:;
while (true) {
if (((uint64_t)(io2_a_src - iop_a_src)) <= 1) {
if (v_length > 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(2)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
}
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_json__error__bad_input);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
}
v_length = 0;
goto label__comment_block__continue;
}
v_c2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
if (v_c2 == 12074) {
iop_a_src += 2;
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(2)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)((v_length + 2))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
self->private_impl.f_comment_type = 1;
status = wuffs_base__make_status(NULL);
goto ok;
}
iop_a_src += 1;
if (v_length >= 65533) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(2)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)((v_length + 1))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
}
v_length = 0;
goto label__comment_block__continue;
}
v_length += 1;
}
} else if ((v_c2 == 12079) && self->private_impl.f_quirks[12]) {
iop_a_src += 2;
v_length = 2;
label__comment_line__continue:;
while (true) {
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
if (a_src && a_src->meta.closed) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
self->private_impl.f_comment_type = 2;
status = wuffs_base__make_status(NULL);
goto ok;
} else if (v_length > 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
}
v_length = 0;
goto label__comment_line__continue;
}
v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
if (v_c == 10) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
self->private_impl.f_comment_type = 2;
status = wuffs_base__make_status(NULL);
goto ok;
}
iop_a_src += 1;
if (v_length >= 65533) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(4)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) |
(((uint64_t)((v_length + 1))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
}
v_length = 0;
goto label__comment_line__continue;
}
v_length += 1;
}
}
ok:
self->private_impl.p_decode_comment[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_comment[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func json.decoder.decode_inf_nan
static wuffs_base__status
wuffs_json__decoder__decode_inf_nan(
wuffs_json__decoder* self,
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_c4 = 0;
uint32_t v_neg = 0;
wuffs_base__token* iop_a_dst = NULL;
wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_inf_nan[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
label__0__continue:;
while (true) {
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
goto label__0__continue;
}
if (((uint64_t)(io2_a_src - iop_a_src)) <= 2) {
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_json__error__bad_input);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
goto label__0__continue;
}
v_c4 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
if ((v_c4 | 2105376) == 6712937) {
if (((uint64_t)(io2_a_src - iop_a_src)) > 7) {
if ((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) | 2314885530818453536) == 8751735898823356009) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(10485792)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(8)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
iop_a_src += 8;
status = wuffs_base__make_status(NULL);
goto ok;
}
} else if ( ! (a_src && a_src->meta.closed)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
goto label__0__continue;
}
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(10485792)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(3)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
iop_a_src += 3;
status = wuffs_base__make_status(NULL);
goto ok;
} else if ((v_c4 | 2105376) == 7233902) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(10485888)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(3)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
iop_a_src += 3;
status = wuffs_base__make_status(NULL);
goto ok;
} else if ((v_c4 & 255) == 43) {
v_neg = 0;
} else if ((v_c4 & 255) == 45) {
v_neg = 1;
} else {
status = wuffs_base__make_status(wuffs_json__error__bad_input);
goto exit;
}
if (((uint64_t)(io2_a_src - iop_a_src)) <= 3) {
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_json__error__bad_input);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
goto label__0__continue;
}
v_c4 = (wuffs_base__peek_u32le__no_bounds_check(iop_a_src) >> 8);
if ((v_c4 | 2105376) == 6712937) {
if (((uint64_t)(io2_a_src - iop_a_src)) > 8) {
if ((wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 1) | 2314885530818453536) == 8751735898823356009) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)((10485760 | (((uint32_t)(32)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(9)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
iop_a_src += 9;
status = wuffs_base__make_status(NULL);
goto ok;
}
} else if ( ! (a_src && a_src->meta.closed)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
goto label__0__continue;
}
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)((10485760 | (((uint32_t)(32)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(4)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
iop_a_src += 4;
status = wuffs_base__make_status(NULL);
goto ok;
} else if ((v_c4 | 2105376) == 7233902) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)((10485760 | (((uint32_t)(128)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(4)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
iop_a_src += 4;
status = wuffs_base__make_status(NULL);
goto ok;
}
status = wuffs_base__make_status(wuffs_json__error__bad_input);
goto exit;
}
ok:
self->private_impl.p_decode_inf_nan[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_inf_nan[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func json.decoder.decode_trailer
static wuffs_base__status
wuffs_json__decoder__decode_trailer(
wuffs_json__decoder* self,
wuffs_base__token_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_c = 0;
uint32_t v_whitespace_length = 0;
wuffs_base__token* iop_a_dst = NULL;
wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_trailer[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_quirks[18]) {
self->private_impl.f_trailer_stop = 10;
} else {
self->private_impl.f_trailer_stop = 0;
}
label__outer__continue:;
while (true) {
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
goto label__outer__continue;
}
v_whitespace_length = 0;
while (true) {
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
if (v_whitespace_length > 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
}
if (a_src && a_src->meta.closed) {
goto label__outer__break;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
goto label__outer__continue;
}
v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
if (WUFFS_JSON__LUT_CLASSES[v_c] != 0) {
if (v_whitespace_length > 0) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
}
if (self->private_impl.f_trailer_stop > 0) {
status = wuffs_base__make_status(wuffs_json__error__bad_input);
goto exit;
}
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
status = wuffs_json__decoder__decode_comment(self, a_dst, a_src);
if (a_dst) {
iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
}
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
if (self->private_impl.f_comment_type > 0) {
goto label__outer__continue;
}
status = wuffs_base__make_status(NULL);
goto ok;
}
iop_a_src += 1;
if ((v_whitespace_length >= 65534) || (v_c == self->private_impl.f_trailer_stop)) {
*iop_a_dst++ = wuffs_base__make_token(
(((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) |
(((uint64_t)((v_whitespace_length + 1))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT));
if (v_c == self->private_impl.f_trailer_stop) {
status = wuffs_base__make_status(NULL);
goto ok;
}
goto label__outer__continue;
}
v_whitespace_length += 1;
}
}
label__outer__break:;
ok:
self->private_impl.p_decode_trailer[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_trailer[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE)
// ---------------- Status Codes Implementations
const char wuffs_nie__error__bad_header[] = "#nie: bad header";
const char wuffs_nie__error__unsupported_nie_file[] = "#nie: unsupported NIE file";
const char wuffs_nie__note__internal_note_short_read[] = "@nie: internal note: short read";
// ---------------- Private Consts
// ---------------- Private Initializer Prototypes
// ---------------- Private Function Prototypes
static wuffs_base__status
wuffs_nie__decoder__swizzle(
wuffs_nie__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src);
// ---------------- VTables
const wuffs_base__image_decoder__func_ptrs
wuffs_nie__decoder__func_ptrs_for__wuffs_base__image_decoder = {
(wuffs_base__status(*)(void*,
wuffs_base__pixel_buffer*,
wuffs_base__io_buffer*,
wuffs_base__pixel_blend,
wuffs_base__slice_u8,
wuffs_base__decode_frame_options*))(&wuffs_nie__decoder__decode_frame),
(wuffs_base__status(*)(void*,
wuffs_base__frame_config*,
wuffs_base__io_buffer*))(&wuffs_nie__decoder__decode_frame_config),
(wuffs_base__status(*)(void*,
wuffs_base__image_config*,
wuffs_base__io_buffer*))(&wuffs_nie__decoder__decode_image_config),
(wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_nie__decoder__frame_dirty_rect),
(uint32_t(*)(const void*))(&wuffs_nie__decoder__num_animation_loops),
(uint64_t(*)(const void*))(&wuffs_nie__decoder__num_decoded_frame_configs),
(uint64_t(*)(const void*))(&wuffs_nie__decoder__num_decoded_frames),
(wuffs_base__status(*)(void*,
uint64_t,
uint64_t))(&wuffs_nie__decoder__restart_frame),
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_nie__decoder__set_quirk_enabled),
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_nie__decoder__set_report_metadata),
(wuffs_base__status(*)(void*,
wuffs_base__io_buffer*,
wuffs_base__more_information*,
wuffs_base__io_buffer*))(&wuffs_nie__decoder__tell_me_more),
(wuffs_base__range_ii_u64(*)(const void*))(&wuffs_nie__decoder__workbuf_len),
};
// ---------------- Initializer Implementations
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_nie__decoder__initialize(
wuffs_nie__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options){
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (sizeof(*self) != sizeof_star_self) {
return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
}
if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
(((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
}
if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
// The whole point of this if-check is to detect an uninitialized *self.
// We disable the warning on GCC. Clang-5.0 does not have this warning.
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
if (self->private_impl.magic != 0) {
return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
}
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
} else {
if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
memset(self, 0, sizeof(*self));
options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
} else {
memset(&(self->private_impl), 0, sizeof(self->private_impl));
}
}
self->private_impl.magic = WUFFS_BASE__MAGIC;
self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
wuffs_base__image_decoder__vtable_name;
self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
(const void*)(&wuffs_nie__decoder__func_ptrs_for__wuffs_base__image_decoder);
return wuffs_base__make_status(NULL);
}
wuffs_nie__decoder*
wuffs_nie__decoder__alloc() {
wuffs_nie__decoder* x =
(wuffs_nie__decoder*)(calloc(sizeof(wuffs_nie__decoder), 1));
if (!x) {
return NULL;
}
if (wuffs_nie__decoder__initialize(
x, sizeof(wuffs_nie__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
free(x);
return NULL;
}
return x;
}
size_t
sizeof__wuffs_nie__decoder() {
return sizeof(wuffs_nie__decoder);
}
// ---------------- Function Implementations
// -------- func nie.decoder.set_quirk_enabled
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_nie__decoder__set_quirk_enabled(
wuffs_nie__decoder* self,
uint32_t a_quirk,
bool a_enabled) {
return wuffs_base__make_empty_struct();
}
// -------- func nie.decoder.decode_image_config
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_nie__decoder__decode_image_config(
wuffs_nie__decoder* self,
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 1)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_a = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_call_sequence != 0) {
status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint32_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
if (num_bits_0 == 24) {
t_0 = ((uint32_t)(*scratch));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0)) << 56;
}
}
v_a = t_0;
}
if (v_a != 1169146734) {
status = wuffs_base__make_status(wuffs_nie__error__bad_header);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
uint32_t t_1;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
if (num_bits_1 == 24) {
t_1 = ((uint32_t)(*scratch));
break;
}
num_bits_1 += 8;
*scratch |= ((uint64_t)(num_bits_1)) << 56;
}
}
v_a = t_1;
}
if (v_a == 879649535) {
self->private_impl.f_pixfmt = 2164295816;
} else if (v_a == 946758399) {
self->private_impl.f_pixfmt = 2164308923;
} else if (v_a == 879780607) {
status = wuffs_base__make_status(wuffs_nie__error__unsupported_nie_file);
goto exit;
} else if (v_a == 946889471) {
status = wuffs_base__make_status(wuffs_nie__error__unsupported_nie_file);
goto exit;
} else {
status = wuffs_base__make_status(wuffs_nie__error__bad_header);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
uint32_t t_2;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
if (num_bits_2 == 24) {
t_2 = ((uint32_t)(*scratch));
break;
}
num_bits_2 += 8;
*scratch |= ((uint64_t)(num_bits_2)) << 56;
}
}
v_a = t_2;
}
if (v_a >= 2147483648) {
status = wuffs_base__make_status(wuffs_nie__error__bad_header);
goto exit;
}
self->private_impl.f_width = v_a;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
uint32_t t_3;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
if (num_bits_3 == 24) {
t_3 = ((uint32_t)(*scratch));
break;
}
num_bits_3 += 8;
*scratch |= ((uint64_t)(num_bits_3)) << 56;
}
}
v_a = t_3;
}
if (v_a >= 2147483648) {
status = wuffs_base__make_status(wuffs_nie__error__bad_header);
goto exit;
}
self->private_impl.f_height = v_a;
if (a_dst != NULL) {
wuffs_base__image_config__set(
a_dst,
self->private_impl.f_pixfmt,
0,
self->private_impl.f_width,
self->private_impl.f_height,
16,
false);
}
self->private_impl.f_call_sequence = 32;
goto ok;
ok:
self->private_impl.p_decode_image_config[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func nie.decoder.decode_frame_config
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_nie__decoder__decode_frame_config(
wuffs_nie__decoder* self,
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 2)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_call_sequence == 32) {
} else if (self->private_impl.f_call_sequence < 32) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_nie__decoder__decode_image_config(self, NULL, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
} else if (self->private_impl.f_call_sequence == 40) {
if (16 != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
status = wuffs_base__make_status(wuffs_base__error__bad_restart);
goto exit;
}
} else if (self->private_impl.f_call_sequence == 64) {
self->private_impl.f_call_sequence = 96;
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
} else {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
}
if (a_dst != NULL) {
wuffs_base__frame_config__set(
a_dst,
wuffs_base__utility__make_rect_ie_u32(
0,
0,
self->private_impl.f_width,
self->private_impl.f_height),
((wuffs_base__flicks)(0)),
0,
16,
0,
false,
false,
0);
}
self->private_impl.f_call_sequence = 64;
ok:
self->private_impl.p_decode_frame_config[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func nie.decoder.decode_frame
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_nie__decoder__decode_frame(
wuffs_nie__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 3)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
wuffs_base__status v_status = wuffs_base__make_status(NULL);
uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_call_sequence == 64) {
} else if (self->private_impl.f_call_sequence < 64) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_nie__decoder__decode_frame_config(self, NULL, a_src);
if (status.repr) {
goto suspend;
}
} else {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
}
self->private_impl.f_dst_x = 0;
self->private_impl.f_dst_y = 0;
v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
wuffs_base__pixel_buffer__pixel_format(a_dst),
wuffs_base__pixel_buffer__palette(a_dst),
wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt),
wuffs_base__utility__empty_slice_u8(),
a_blend);
if ( ! wuffs_base__status__is_ok(&v_status)) {
status = v_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
}
while (true) {
v_status = wuffs_nie__decoder__swizzle(self, a_dst, a_src);
if (wuffs_base__status__is_ok(&v_status)) {
goto label__0__break;
} else if (v_status.repr != wuffs_nie__note__internal_note_short_read) {
status = v_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
}
label__0__break:;
self->private_impl.f_call_sequence = 96;
ok:
self->private_impl.p_decode_frame[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
goto exit;
exit:
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func nie.decoder.swizzle
static wuffs_base__status
wuffs_nie__decoder__swizzle(
wuffs_nie__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
wuffs_base__pixel_format v_dst_pixfmt = {0};
uint32_t v_dst_bits_per_pixel = 0;
uint64_t v_dst_bytes_per_pixel = 0;
uint64_t v_dst_bytes_per_row = 0;
wuffs_base__table_u8 v_tab = {0};
wuffs_base__slice_u8 v_dst = {0};
uint64_t v_i = 0;
uint64_t v_n = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
if ((v_dst_bits_per_pixel & 7) != 0) {
status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
goto exit;
}
v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8)));
v_dst_bytes_per_row = (((uint64_t)(self->private_impl.f_width)) * v_dst_bytes_per_pixel);
v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0);
label__0__continue:;
while (true) {
if (self->private_impl.f_dst_x == self->private_impl.f_width) {
self->private_impl.f_dst_x = 0;
self->private_impl.f_dst_y += 1;
if (self->private_impl.f_dst_y >= self->private_impl.f_height) {
goto label__0__break;
}
}
v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y);
if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) {
v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row);
}
v_i = (((uint64_t)(self->private_impl.f_dst_x)) * v_dst_bytes_per_pixel);
if (v_i >= ((uint64_t)(v_dst.len))) {
goto label__0__continue;
}
v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader(
&self->private_impl.f_swizzler,
wuffs_base__slice_u8__subslice_i(v_dst, v_i),
wuffs_base__pixel_buffer__palette(a_dst),
&iop_a_src,
io2_a_src);
if (v_n == 0) {
status = wuffs_base__make_status(wuffs_nie__note__internal_note_short_read);
goto ok;
}
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)((v_n & 4294967295))));
}
label__0__break:;
status = wuffs_base__make_status(NULL);
goto ok;
ok:
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func nie.decoder.frame_dirty_rect
WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
wuffs_nie__decoder__frame_dirty_rect(
const wuffs_nie__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_rect_ie_u32();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_rect_ie_u32();
}
return wuffs_base__utility__make_rect_ie_u32(
0,
0,
self->private_impl.f_width,
self->private_impl.f_height);
}
// -------- func nie.decoder.num_animation_loops
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_nie__decoder__num_animation_loops(
const wuffs_nie__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
return 0;
}
// -------- func nie.decoder.num_decoded_frame_configs
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_nie__decoder__num_decoded_frame_configs(
const wuffs_nie__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
if (self->private_impl.f_call_sequence > 32) {
return 1;
}
return 0;
}
// -------- func nie.decoder.num_decoded_frames
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_nie__decoder__num_decoded_frames(
const wuffs_nie__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
if (self->private_impl.f_call_sequence > 64) {
return 1;
}
return 0;
}
// -------- func nie.decoder.restart_frame
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_nie__decoder__restart_frame(
wuffs_nie__decoder* self,
uint64_t a_index,
uint64_t a_io_position) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (self->private_impl.f_call_sequence < 32) {
return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
}
if ((a_index != 0) || (a_io_position != 16)) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
self->private_impl.f_call_sequence = 40;
return wuffs_base__make_status(NULL);
}
// -------- func nie.decoder.set_report_metadata
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_nie__decoder__set_report_metadata(
wuffs_nie__decoder* self,
uint32_t a_fourcc,
bool a_report) {
return wuffs_base__make_empty_struct();
}
// -------- func nie.decoder.tell_me_more
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_nie__decoder__tell_me_more(
wuffs_nie__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 4)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
status = wuffs_base__make_status(wuffs_base__error__no_more_information);
goto exit;
goto ok;
ok:
goto exit;
exit:
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func nie.decoder.workbuf_len
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_nie__decoder__workbuf_len(
const wuffs_nie__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
return wuffs_base__utility__make_range_ii_u64(0, 0);
}
#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB)
// ---------------- Status Codes Implementations
const char wuffs_zlib__note__dictionary_required[] = "@zlib: dictionary required";
const char wuffs_zlib__error__bad_checksum[] = "#zlib: bad checksum";
const char wuffs_zlib__error__bad_compression_method[] = "#zlib: bad compression method";
const char wuffs_zlib__error__bad_compression_window_size[] = "#zlib: bad compression window size";
const char wuffs_zlib__error__bad_parity_check[] = "#zlib: bad parity check";
const char wuffs_zlib__error__incorrect_dictionary[] = "#zlib: incorrect dictionary";
// ---------------- Private Consts
#define WUFFS_ZLIB__QUIRKS_BASE 2113790976
#define WUFFS_ZLIB__QUIRKS_COUNT 1
// ---------------- Private Initializer Prototypes
// ---------------- Private Function Prototypes
// ---------------- VTables
const wuffs_base__io_transformer__func_ptrs
wuffs_zlib__decoder__func_ptrs_for__wuffs_base__io_transformer = {
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_zlib__decoder__set_quirk_enabled),
(wuffs_base__status(*)(void*,
wuffs_base__io_buffer*,
wuffs_base__io_buffer*,
wuffs_base__slice_u8))(&wuffs_zlib__decoder__transform_io),
(wuffs_base__range_ii_u64(*)(const void*))(&wuffs_zlib__decoder__workbuf_len),
};
// ---------------- Initializer Implementations
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_zlib__decoder__initialize(
wuffs_zlib__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options){
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (sizeof(*self) != sizeof_star_self) {
return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
}
if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
(((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
}
if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
// The whole point of this if-check is to detect an uninitialized *self.
// We disable the warning on GCC. Clang-5.0 does not have this warning.
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
if (self->private_impl.magic != 0) {
return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
}
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
} else {
if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
memset(self, 0, sizeof(*self));
options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
} else {
memset(&(self->private_impl), 0, sizeof(self->private_impl));
}
}
{
wuffs_base__status z = wuffs_adler32__hasher__initialize(
&self->private_data.f_checksum, sizeof(self->private_data.f_checksum), WUFFS_VERSION, options);
if (z.repr) {
return z;
}
}
{
wuffs_base__status z = wuffs_adler32__hasher__initialize(
&self->private_data.f_dict_id_hasher, sizeof(self->private_data.f_dict_id_hasher), WUFFS_VERSION, options);
if (z.repr) {
return z;
}
}
{
wuffs_base__status z = wuffs_deflate__decoder__initialize(
&self->private_data.f_flate, sizeof(self->private_data.f_flate), WUFFS_VERSION, options);
if (z.repr) {
return z;
}
}
self->private_impl.magic = WUFFS_BASE__MAGIC;
self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name =
wuffs_base__io_transformer__vtable_name;
self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers =
(const void*)(&wuffs_zlib__decoder__func_ptrs_for__wuffs_base__io_transformer);
return wuffs_base__make_status(NULL);
}
wuffs_zlib__decoder*
wuffs_zlib__decoder__alloc() {
wuffs_zlib__decoder* x =
(wuffs_zlib__decoder*)(calloc(sizeof(wuffs_zlib__decoder), 1));
if (!x) {
return NULL;
}
if (wuffs_zlib__decoder__initialize(
x, sizeof(wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
free(x);
return NULL;
}
return x;
}
size_t
sizeof__wuffs_zlib__decoder() {
return sizeof(wuffs_zlib__decoder);
}
// ---------------- Function Implementations
// -------- func zlib.decoder.dictionary_id
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_zlib__decoder__dictionary_id(
const wuffs_zlib__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
return self->private_impl.f_dict_id_want;
}
// -------- func zlib.decoder.add_dictionary
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_zlib__decoder__add_dictionary(
wuffs_zlib__decoder* self,
wuffs_base__slice_u8 a_dict) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.f_header_complete) {
self->private_impl.f_bad_call_sequence = true;
} else {
self->private_impl.f_dict_id_got = wuffs_adler32__hasher__update_u32(&self->private_data.f_dict_id_hasher, a_dict);
wuffs_deflate__decoder__add_history(&self->private_data.f_flate, a_dict);
}
self->private_impl.f_got_dictionary = true;
return wuffs_base__make_empty_struct();
}
// -------- func zlib.decoder.set_quirk_enabled
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_zlib__decoder__set_quirk_enabled(
wuffs_zlib__decoder* self,
uint32_t a_quirk,
bool a_enabled) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.f_header_complete) {
self->private_impl.f_bad_call_sequence = true;
} else if (a_quirk == 1) {
self->private_impl.f_ignore_checksum = a_enabled;
} else if (a_quirk >= 2113790976) {
a_quirk -= 2113790976;
if (a_quirk < 1) {
self->private_impl.f_quirks[a_quirk] = a_enabled;
}
}
return wuffs_base__make_empty_struct();
}
// -------- func zlib.decoder.workbuf_len
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_zlib__decoder__workbuf_len(
const wuffs_zlib__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
return wuffs_base__utility__make_range_ii_u64(1, 1);
}
// -------- func zlib.decoder.transform_io
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_zlib__decoder__transform_io(
wuffs_zlib__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 1)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint16_t v_x = 0;
uint32_t v_checksum_got = 0;
wuffs_base__status v_status = wuffs_base__make_status(NULL);
uint32_t v_checksum_want = 0;
uint64_t v_mark = 0;
uint8_t* iop_a_dst = NULL;
uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_transform_io[0];
if (coro_susp_point) {
v_checksum_got = self->private_data.s_transform_io[0].v_checksum_got;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_bad_call_sequence) {
status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
goto exit;
} else if (self->private_impl.f_quirks[0]) {
} else if ( ! self->private_impl.f_want_dictionary) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint16_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_0 = wuffs_base__peek_u16be__no_bounds_check(iop_a_src);
iop_a_src += 2;
} else {
self->private_data.s_transform_io[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_transform_io[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
if (num_bits_0 == 8) {
t_0 = ((uint16_t)(*scratch >> 48));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0));
}
}
v_x = t_0;
}
if (((v_x >> 8) & 15) != 8) {
status = wuffs_base__make_status(wuffs_zlib__error__bad_compression_method);
goto exit;
}
if ((v_x >> 12) > 7) {
status = wuffs_base__make_status(wuffs_zlib__error__bad_compression_window_size);
goto exit;
}
if ((v_x % 31) != 0) {
status = wuffs_base__make_status(wuffs_zlib__error__bad_parity_check);
goto exit;
}
self->private_impl.f_want_dictionary = ((v_x & 32) != 0);
if (self->private_impl.f_want_dictionary) {
self->private_impl.f_dict_id_got = 1;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
uint32_t t_1;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_transform_io[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_transform_io[0].scratch;
uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
if (num_bits_1 == 24) {
t_1 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_1 += 8;
*scratch |= ((uint64_t)(num_bits_1));
}
}
self->private_impl.f_dict_id_want = t_1;
}
status = wuffs_base__make_status(wuffs_zlib__note__dictionary_required);
goto ok;
} else if (self->private_impl.f_got_dictionary) {
status = wuffs_base__make_status(wuffs_zlib__error__incorrect_dictionary);
goto exit;
}
} else if (self->private_impl.f_dict_id_got != self->private_impl.f_dict_id_want) {
if (self->private_impl.f_got_dictionary) {
status = wuffs_base__make_status(wuffs_zlib__error__incorrect_dictionary);
goto exit;
}
status = wuffs_base__make_status(wuffs_zlib__note__dictionary_required);
goto ok;
}
self->private_impl.f_header_complete = true;
while (true) {
v_mark = ((uint64_t)(iop_a_dst - io0_a_dst));
{
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
wuffs_base__status t_2 = wuffs_deflate__decoder__transform_io(&self->private_data.f_flate, a_dst, a_src, a_workbuf);
v_status = t_2;
if (a_dst) {
iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
}
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
}
if ( ! self->private_impl.f_ignore_checksum && ! self->private_impl.f_quirks[0]) {
v_checksum_got = wuffs_adler32__hasher__update_u32(&self->private_data.f_checksum, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst));
}
if (wuffs_base__status__is_ok(&v_status)) {
goto label__0__break;
}
status = v_status;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
}
label__0__break:;
if ( ! self->private_impl.f_quirks[0]) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
uint32_t t_3;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_transform_io[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_transform_io[0].scratch;
uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
if (num_bits_3 == 24) {
t_3 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_3 += 8;
*scratch |= ((uint64_t)(num_bits_3));
}
}
v_checksum_want = t_3;
}
if ( ! self->private_impl.f_ignore_checksum && (v_checksum_got != v_checksum_want)) {
status = wuffs_base__make_status(wuffs_zlib__error__bad_checksum);
goto exit;
}
}
ok:
self->private_impl.p_transform_io[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
self->private_data.s_transform_io[0].v_checksum_got = v_checksum_got;
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG)
// ---------------- Status Codes Implementations
const char wuffs_png__error__bad_animation_sequence_number[] = "#png: bad animation sequence number";
const char wuffs_png__error__bad_checksum[] = "#png: bad checksum";
const char wuffs_png__error__bad_chunk[] = "#png: bad chunk";
const char wuffs_png__error__bad_filter[] = "#png: bad filter";
const char wuffs_png__error__bad_header[] = "#png: bad header";
const char wuffs_png__error__bad_text_chunk_not_latin_1[] = "#png: bad text chunk (not Latin-1)";
const char wuffs_png__error__missing_palette[] = "#png: missing palette";
const char wuffs_png__error__unsupported_cgbi_extension[] = "#png: unsupported CgBI extension";
const char wuffs_png__error__unsupported_png_compression_method[] = "#png: unsupported PNG compression method";
const char wuffs_png__error__unsupported_png_file[] = "#png: unsupported PNG file";
const char wuffs_png__error__internal_error_inconsistent_i_o[] = "#png: internal error: inconsistent I/O";
const char wuffs_png__error__internal_error_inconsistent_chunk_type[] = "#png: internal error: inconsistent chunk type";
const char wuffs_png__error__internal_error_inconsistent_frame_bounds[] = "#png: internal error: inconsistent frame bounds";
const char wuffs_png__error__internal_error_inconsistent_workbuf_length[] = "#png: internal error: inconsistent workbuf length";
const char wuffs_png__error__internal_error_zlib_decoder_did_not_exhaust_its_input[] = "#png: internal error: zlib decoder did not exhaust its input";
// ---------------- Private Consts
#define WUFFS_PNG__ANCILLARY_BIT 32
static const uint8_t
WUFFS_PNG__INTERLACING[8][6] WUFFS_BASE__POTENTIALLY_UNUSED = {
{
0, 0, 0, 0, 0, 0,
}, {
3, 7, 0, 3, 7, 0,
}, {
3, 3, 4, 3, 7, 0,
}, {
2, 3, 0, 3, 3, 4,
}, {
2, 1, 2, 2, 3, 0,
}, {
1, 1, 0, 2, 1, 2,
}, {
1, 0, 1, 1, 1, 0,
}, {
0, 0, 0, 1, 0, 1,
},
};
static const uint8_t
WUFFS_PNG__LOW_BIT_DEPTH_MULTIPLIERS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
0, 255, 85, 0, 17, 0, 0, 0,
};
static const uint8_t
WUFFS_PNG__LOW_BIT_DEPTH_NUM_PACKS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
0, 8, 4, 0, 2, 0, 0, 0,
};
static const uint8_t
WUFFS_PNG__NUM_CHANNELS[8] WUFFS_BASE__POTENTIALLY_UNUSED = {
1, 0, 3, 1, 2, 0, 4, 0,
};
static const uint16_t
WUFFS_PNG__LATIN_1[256] WUFFS_BASE__POTENTIALLY_UNUSED = {
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
32, 33, 34, 35, 36, 37, 38, 39,
40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55,
56, 57, 58, 59, 60, 61, 62, 63,
64, 65, 66, 67, 68, 69, 70, 71,
72, 73, 74, 75, 76, 77, 78, 79,
80, 81, 82, 83, 84, 85, 86, 87,
88, 89, 90, 91, 92, 93, 94, 95,
96, 97, 98, 99, 100, 101, 102, 103,
104, 105, 106, 107, 108, 109, 110, 111,
112, 113, 114, 115, 116, 117, 118, 119,
120, 121, 122, 123, 124, 125, 126, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 41410, 41666, 41922, 42178, 42434, 42690, 42946,
43202, 43458, 43714, 43970, 44226, 44482, 44738, 44994,
45250, 45506, 45762, 46018, 46274, 46530, 46786, 47042,
47298, 47554, 47810, 48066, 48322, 48578, 48834, 49090,
32963, 33219, 33475, 33731, 33987, 34243, 34499, 34755,
35011, 35267, 35523, 35779, 36035, 36291, 36547, 36803,
37059, 37315, 37571, 37827, 38083, 38339, 38595, 38851,
39107, 39363, 39619, 39875, 40131, 40387, 40643, 40899,
41155, 41411, 41667, 41923, 42179, 42435, 42691, 42947,
43203, 43459, 43715, 43971, 44227, 44483, 44739, 44995,
45251, 45507, 45763, 46019, 46275, 46531, 46787, 47043,
47299, 47555, 47811, 48067, 48323, 48579, 48835, 49091,
};
// ---------------- Private Initializer Prototypes
// ---------------- Private Function Prototypes
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
static wuffs_base__empty_struct
wuffs_png__decoder__filter_1_distance_4_arm_neon(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr);
#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
static wuffs_base__empty_struct
wuffs_png__decoder__filter_3_distance_4_arm_neon(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4_distance_3_arm_neon(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4_distance_4_arm_neon(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
static wuffs_base__empty_struct
wuffs_png__decoder__filter_1(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr);
static wuffs_base__empty_struct
wuffs_png__decoder__filter_1__choosy_default(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr);
static wuffs_base__empty_struct
wuffs_png__decoder__filter_1_distance_3_fallback(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr);
static wuffs_base__empty_struct
wuffs_png__decoder__filter_1_distance_4_fallback(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr);
static wuffs_base__empty_struct
wuffs_png__decoder__filter_2(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
static wuffs_base__empty_struct
wuffs_png__decoder__filter_3(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
static wuffs_base__empty_struct
wuffs_png__decoder__filter_3__choosy_default(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
static wuffs_base__empty_struct
wuffs_png__decoder__filter_3_distance_3_fallback(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
static wuffs_base__empty_struct
wuffs_png__decoder__filter_3_distance_4_fallback(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4__choosy_default(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4_distance_3_fallback(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4_distance_4_fallback(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
static wuffs_base__empty_struct
wuffs_png__decoder__filter_1_distance_4_x86_sse42(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr);
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
static wuffs_base__empty_struct
wuffs_png__decoder__filter_3_distance_4_x86_sse42(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4_distance_3_x86_sse42(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4_distance_4_x86_sse42(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev);
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
static wuffs_base__status
wuffs_png__decoder__decode_ihdr(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__empty_struct
wuffs_png__decoder__assign_filter_distance(
wuffs_png__decoder* self);
static uint64_t
wuffs_png__decoder__calculate_bytes_per_row(
const wuffs_png__decoder* self,
uint32_t a_width);
static wuffs_base__empty_struct
wuffs_png__decoder__choose_filter_implementations(
wuffs_png__decoder* self);
static wuffs_base__status
wuffs_png__decoder__decode_other_chunk(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src,
bool a_framy);
static wuffs_base__status
wuffs_png__decoder__decode_actl(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_png__decoder__decode_chrm(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_png__decoder__decode_exif(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_png__decoder__decode_fctl(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_png__decoder__decode_gama(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_png__decoder__decode_iccp(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_png__decoder__decode_plte(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_png__decoder__decode_srgb(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_png__decoder__decode_trns(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_png__decoder__skip_frame(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src);
static wuffs_base__status
wuffs_png__decoder__decode_pass(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf);
static wuffs_base__status
wuffs_png__decoder__filter_and_swizzle(
wuffs_png__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__slice_u8 a_workbuf);
static wuffs_base__status
wuffs_png__decoder__filter_and_swizzle__choosy_default(
wuffs_png__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__slice_u8 a_workbuf);
static wuffs_base__status
wuffs_png__decoder__filter_and_swizzle_tricky(
wuffs_png__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__slice_u8 a_workbuf);
// ---------------- VTables
const wuffs_base__image_decoder__func_ptrs
wuffs_png__decoder__func_ptrs_for__wuffs_base__image_decoder = {
(wuffs_base__status(*)(void*,
wuffs_base__pixel_buffer*,
wuffs_base__io_buffer*,
wuffs_base__pixel_blend,
wuffs_base__slice_u8,
wuffs_base__decode_frame_options*))(&wuffs_png__decoder__decode_frame),
(wuffs_base__status(*)(void*,
wuffs_base__frame_config*,
wuffs_base__io_buffer*))(&wuffs_png__decoder__decode_frame_config),
(wuffs_base__status(*)(void*,
wuffs_base__image_config*,
wuffs_base__io_buffer*))(&wuffs_png__decoder__decode_image_config),
(wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_png__decoder__frame_dirty_rect),
(uint32_t(*)(const void*))(&wuffs_png__decoder__num_animation_loops),
(uint64_t(*)(const void*))(&wuffs_png__decoder__num_decoded_frame_configs),
(uint64_t(*)(const void*))(&wuffs_png__decoder__num_decoded_frames),
(wuffs_base__status(*)(void*,
uint64_t,
uint64_t))(&wuffs_png__decoder__restart_frame),
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_png__decoder__set_quirk_enabled),
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_png__decoder__set_report_metadata),
(wuffs_base__status(*)(void*,
wuffs_base__io_buffer*,
wuffs_base__more_information*,
wuffs_base__io_buffer*))(&wuffs_png__decoder__tell_me_more),
(wuffs_base__range_ii_u64(*)(const void*))(&wuffs_png__decoder__workbuf_len),
};
// ---------------- Initializer Implementations
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_png__decoder__initialize(
wuffs_png__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options){
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (sizeof(*self) != sizeof_star_self) {
return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
}
if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
(((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
}
if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
// The whole point of this if-check is to detect an uninitialized *self.
// We disable the warning on GCC. Clang-5.0 does not have this warning.
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
if (self->private_impl.magic != 0) {
return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
}
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
} else {
if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
memset(self, 0, sizeof(*self));
options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
} else {
memset(&(self->private_impl), 0, sizeof(self->private_impl));
}
}
self->private_impl.choosy_filter_1 = &wuffs_png__decoder__filter_1__choosy_default;
self->private_impl.choosy_filter_3 = &wuffs_png__decoder__filter_3__choosy_default;
self->private_impl.choosy_filter_4 = &wuffs_png__decoder__filter_4__choosy_default;
self->private_impl.choosy_filter_and_swizzle = &wuffs_png__decoder__filter_and_swizzle__choosy_default;
{
wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize(
&self->private_data.f_crc32, sizeof(self->private_data.f_crc32), WUFFS_VERSION, options);
if (z.repr) {
return z;
}
}
{
wuffs_base__status z = wuffs_zlib__decoder__initialize(
&self->private_data.f_zlib, sizeof(self->private_data.f_zlib), WUFFS_VERSION, options);
if (z.repr) {
return z;
}
}
self->private_impl.magic = WUFFS_BASE__MAGIC;
self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
wuffs_base__image_decoder__vtable_name;
self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
(const void*)(&wuffs_png__decoder__func_ptrs_for__wuffs_base__image_decoder);
return wuffs_base__make_status(NULL);
}
wuffs_png__decoder*
wuffs_png__decoder__alloc() {
wuffs_png__decoder* x =
(wuffs_png__decoder*)(calloc(sizeof(wuffs_png__decoder), 1));
if (!x) {
return NULL;
}
if (wuffs_png__decoder__initialize(
x, sizeof(wuffs_png__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
free(x);
return NULL;
}
return x;
}
size_t
sizeof__wuffs_png__decoder() {
return sizeof(wuffs_png__decoder);
}
// ---------------- Function Implementations
// โ€ผ WUFFS MULTI-FILE SECTION +arm_neon
// -------- func png.decoder.filter_1_distance_4_arm_neon
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
static wuffs_base__empty_struct
wuffs_png__decoder__filter_1_distance_4_arm_neon(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr) {
wuffs_base__slice_u8 v_curr = {0};
uint8x8_t v_fa = {0};
uint8x8_t v_fx = {0};
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
v_curr.len = 4;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
while (v_curr.ptr < i_end0_curr) {
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_fx = vadd_u8(v_fx, v_fa);
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_fa = v_fx;
v_curr.ptr += 4;
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_fx = vadd_u8(v_fx, v_fa);
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_fa = v_fx;
v_curr.ptr += 4;
}
v_curr.len = 4;
uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
while (v_curr.ptr < i_end1_curr) {
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_fx = vadd_u8(v_fx, v_fa);
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_fa = v_fx;
v_curr.ptr += 4;
}
v_curr.len = 0;
}
return wuffs_base__make_empty_struct();
}
#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
// โ€ผ WUFFS MULTI-FILE SECTION -arm_neon
// โ€ผ WUFFS MULTI-FILE SECTION +arm_neon
// -------- func png.decoder.filter_3_distance_4_arm_neon
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
static wuffs_base__empty_struct
wuffs_png__decoder__filter_3_distance_4_arm_neon(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev) {
wuffs_base__slice_u8 v_curr = {0};
wuffs_base__slice_u8 v_prev = {0};
uint8x8_t v_fa = {0};
uint8x8_t v_fb = {0};
uint8x8_t v_fx = {0};
if (((uint64_t)(a_prev.len)) == 0) {
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
v_curr.len = 4;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
while (v_curr.ptr < i_end0_curr) {
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_fa = v_fx;
v_curr.ptr += 4;
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_fa = v_fx;
v_curr.ptr += 4;
}
v_curr.len = 4;
uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
while (v_curr.ptr < i_end1_curr) {
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_fa = v_fx;
v_curr.ptr += 4;
}
v_curr.len = 0;
}
} else {
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
wuffs_base__slice_u8 i_slice_prev = a_prev;
v_prev.ptr = i_slice_prev.ptr;
i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
v_curr.len = 4;
v_prev.len = 4;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
while (v_curr.ptr < i_end0_curr) {
v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_fa = v_fx;
v_curr.ptr += 4;
v_prev.ptr += 4;
v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_fa = v_fx;
v_curr.ptr += 4;
v_prev.ptr += 4;
}
v_curr.len = 4;
v_prev.len = 4;
uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
while (v_curr.ptr < i_end1_curr) {
v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb));
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_fa = v_fx;
v_curr.ptr += 4;
v_prev.ptr += 4;
}
v_curr.len = 0;
v_prev.len = 0;
}
}
return wuffs_base__make_empty_struct();
}
#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
// โ€ผ WUFFS MULTI-FILE SECTION -arm_neon
// โ€ผ WUFFS MULTI-FILE SECTION +arm_neon
// -------- func png.decoder.filter_4_distance_3_arm_neon
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4_distance_3_arm_neon(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev) {
wuffs_base__slice_u8 v_curr = {0};
wuffs_base__slice_u8 v_prev = {0};
uint8x8_t v_fa = {0};
uint8x8_t v_fb = {0};
uint8x8_t v_fc = {0};
uint8x8_t v_fx = {0};
uint16x8_t v_fafb = {0};
uint16x8_t v_fcfc = {0};
uint16x8_t v_pa = {0};
uint16x8_t v_pb = {0};
uint16x8_t v_pc = {0};
uint16x8_t v_cmpab = {0};
uint16x8_t v_cmpac = {0};
uint8x8_t v_picka = {0};
uint8x8_t v_pickb = {0};
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
wuffs_base__slice_u8 i_slice_prev = a_prev;
v_prev.ptr = i_slice_prev.ptr;
i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
v_curr.len = 4;
v_prev.len = 4;
uint8_t* i_end0_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 7, 6);
while (v_curr.ptr < i_end0_curr) {
v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_fafb = vaddl_u8(v_fa, v_fb);
v_fcfc = vaddl_u8(v_fc, v_fc);
v_pa = vabdl_u8(v_fb, v_fc);
v_pb = vabdl_u8(v_fa, v_fc);
v_pc = vabdq_u16(v_fafb, v_fcfc);
v_cmpab = vcleq_u16(v_pa, v_pb);
v_cmpac = vcleq_u16(v_pa, v_pc);
v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_fc = v_fb;
v_fa = v_fx;
v_curr.ptr += 3;
v_prev.ptr += 3;
v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_fafb = vaddl_u8(v_fa, v_fb);
v_fcfc = vaddl_u8(v_fc, v_fc);
v_pa = vabdl_u8(v_fb, v_fc);
v_pb = vabdl_u8(v_fa, v_fc);
v_pc = vabdq_u16(v_fafb, v_fcfc);
v_cmpab = vcleq_u16(v_pa, v_pb);
v_cmpac = vcleq_u16(v_pa, v_pc);
v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_fc = v_fb;
v_fa = v_fx;
v_curr.ptr += 3;
v_prev.ptr += 3;
}
v_curr.len = 4;
v_prev.len = 4;
uint8_t* i_end1_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 4, 3);
while (v_curr.ptr < i_end1_curr) {
v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_fafb = vaddl_u8(v_fa, v_fb);
v_fcfc = vaddl_u8(v_fc, v_fc);
v_pa = vabdl_u8(v_fb, v_fc);
v_pb = vabdl_u8(v_fa, v_fc);
v_pc = vabdq_u16(v_fafb, v_fcfc);
v_cmpab = vcleq_u16(v_pa, v_pb);
v_cmpac = vcleq_u16(v_pa, v_pc);
v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_fc = v_fb;
v_fa = v_fx;
v_curr.ptr += 3;
v_prev.ptr += 3;
}
v_curr.len = 3;
v_prev.len = 3;
uint8_t* i_end2_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
while (v_curr.ptr < i_end2_curr) {
v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u24le__no_bounds_check(v_prev.ptr)));
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u24le__no_bounds_check(v_curr.ptr)));
v_fafb = vaddl_u8(v_fa, v_fb);
v_fcfc = vaddl_u8(v_fc, v_fc);
v_pa = vabdl_u8(v_fb, v_fc);
v_pb = vabdl_u8(v_fa, v_fc);
v_pc = vabdq_u16(v_fafb, v_fcfc);
v_cmpab = vcleq_u16(v_pa, v_pb);
v_cmpac = vcleq_u16(v_pa, v_pc);
v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_curr.ptr += 3;
v_prev.ptr += 3;
}
v_curr.len = 0;
v_prev.len = 0;
}
return wuffs_base__make_empty_struct();
}
#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
// โ€ผ WUFFS MULTI-FILE SECTION -arm_neon
// โ€ผ WUFFS MULTI-FILE SECTION +arm_neon
// -------- func png.decoder.filter_4_distance_4_arm_neon
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4_distance_4_arm_neon(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev) {
wuffs_base__slice_u8 v_curr = {0};
wuffs_base__slice_u8 v_prev = {0};
uint8x8_t v_fa = {0};
uint8x8_t v_fb = {0};
uint8x8_t v_fc = {0};
uint8x8_t v_fx = {0};
uint16x8_t v_fafb = {0};
uint16x8_t v_fcfc = {0};
uint16x8_t v_pa = {0};
uint16x8_t v_pb = {0};
uint16x8_t v_pc = {0};
uint16x8_t v_cmpab = {0};
uint16x8_t v_cmpac = {0};
uint8x8_t v_picka = {0};
uint8x8_t v_pickb = {0};
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
wuffs_base__slice_u8 i_slice_prev = a_prev;
v_prev.ptr = i_slice_prev.ptr;
i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
v_curr.len = 4;
v_prev.len = 4;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
while (v_curr.ptr < i_end0_curr) {
v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_fafb = vaddl_u8(v_fa, v_fb);
v_fcfc = vaddl_u8(v_fc, v_fc);
v_pa = vabdl_u8(v_fb, v_fc);
v_pb = vabdl_u8(v_fa, v_fc);
v_pc = vabdq_u16(v_fafb, v_fcfc);
v_cmpab = vcleq_u16(v_pa, v_pb);
v_cmpac = vcleq_u16(v_pa, v_pc);
v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_fc = v_fb;
v_fa = v_fx;
v_curr.ptr += 4;
v_prev.ptr += 4;
v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_fafb = vaddl_u8(v_fa, v_fb);
v_fcfc = vaddl_u8(v_fc, v_fc);
v_pa = vabdl_u8(v_fb, v_fc);
v_pb = vabdl_u8(v_fa, v_fc);
v_pc = vabdq_u16(v_fafb, v_fcfc);
v_cmpab = vcleq_u16(v_pa, v_pb);
v_cmpac = vcleq_u16(v_pa, v_pc);
v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_fc = v_fb;
v_fa = v_fx;
v_curr.ptr += 4;
v_prev.ptr += 4;
}
v_curr.len = 4;
v_prev.len = 4;
uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
while (v_curr.ptr < i_end1_curr) {
v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_fafb = vaddl_u8(v_fa, v_fb);
v_fcfc = vaddl_u8(v_fc, v_fc);
v_pa = vabdl_u8(v_fb, v_fc);
v_pb = vabdl_u8(v_fa, v_fc);
v_pc = vabdq_u16(v_fafb, v_fcfc);
v_cmpab = vcleq_u16(v_pa, v_pb);
v_cmpac = vcleq_u16(v_pa, v_pc);
v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac));
v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc));
v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc)));
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0));
v_fc = v_fb;
v_fa = v_fx;
v_curr.ptr += 4;
v_prev.ptr += 4;
}
v_curr.len = 0;
v_prev.len = 0;
}
return wuffs_base__make_empty_struct();
}
#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
// โ€ผ WUFFS MULTI-FILE SECTION -arm_neon
// -------- func png.decoder.filter_1
static wuffs_base__empty_struct
wuffs_png__decoder__filter_1(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr) {
return (*self->private_impl.choosy_filter_1)(self, a_curr);
}
static wuffs_base__empty_struct
wuffs_png__decoder__filter_1__choosy_default(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr) {
uint64_t v_filter_distance = 0;
uint8_t v_fa = 0;
uint64_t v_i_start = 0;
uint64_t v_i = 0;
v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
v_i_start = 0;
while (v_i_start < v_filter_distance) {
v_fa = 0;
v_i = v_i_start;
while (v_i < ((uint64_t)(a_curr.len))) {
a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + v_fa));
v_fa = a_curr.ptr[v_i];
v_i += v_filter_distance;
}
v_i_start += 1;
}
return wuffs_base__make_empty_struct();
}
// -------- func png.decoder.filter_1_distance_3_fallback
static wuffs_base__empty_struct
wuffs_png__decoder__filter_1_distance_3_fallback(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr) {
wuffs_base__slice_u8 v_curr = {0};
uint8_t v_fa0 = 0;
uint8_t v_fa1 = 0;
uint8_t v_fa2 = 0;
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
v_curr.len = 3;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6);
while (v_curr.ptr < i_end0_curr) {
v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0]));
v_curr.ptr[0] = v_fa0;
v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1]));
v_curr.ptr[1] = v_fa1;
v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2]));
v_curr.ptr[2] = v_fa2;
v_curr.ptr += 3;
v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0]));
v_curr.ptr[0] = v_fa0;
v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1]));
v_curr.ptr[1] = v_fa1;
v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2]));
v_curr.ptr[2] = v_fa2;
v_curr.ptr += 3;
}
v_curr.len = 3;
uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
while (v_curr.ptr < i_end1_curr) {
v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0]));
v_curr.ptr[0] = v_fa0;
v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1]));
v_curr.ptr[1] = v_fa1;
v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2]));
v_curr.ptr[2] = v_fa2;
v_curr.ptr += 3;
}
v_curr.len = 0;
}
return wuffs_base__make_empty_struct();
}
// -------- func png.decoder.filter_1_distance_4_fallback
static wuffs_base__empty_struct
wuffs_png__decoder__filter_1_distance_4_fallback(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr) {
wuffs_base__slice_u8 v_curr = {0};
uint8_t v_fa0 = 0;
uint8_t v_fa1 = 0;
uint8_t v_fa2 = 0;
uint8_t v_fa3 = 0;
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
v_curr.len = 4;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
while (v_curr.ptr < i_end0_curr) {
v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0]));
v_curr.ptr[0] = v_fa0;
v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1]));
v_curr.ptr[1] = v_fa1;
v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2]));
v_curr.ptr[2] = v_fa2;
v_fa3 = ((uint8_t)(v_fa3 + v_curr.ptr[3]));
v_curr.ptr[3] = v_fa3;
v_curr.ptr += 4;
}
v_curr.len = 0;
}
return wuffs_base__make_empty_struct();
}
// -------- func png.decoder.filter_2
static wuffs_base__empty_struct
wuffs_png__decoder__filter_2(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev) {
uint64_t v_n = 0;
uint64_t v_i = 0;
v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len)));
v_i = 0;
while (v_i < v_n) {
a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + a_prev.ptr[v_i]));
v_i += 1;
}
return wuffs_base__make_empty_struct();
}
// -------- func png.decoder.filter_3
static wuffs_base__empty_struct
wuffs_png__decoder__filter_3(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev) {
return (*self->private_impl.choosy_filter_3)(self, a_curr, a_prev);
}
static wuffs_base__empty_struct
wuffs_png__decoder__filter_3__choosy_default(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev) {
uint64_t v_filter_distance = 0;
uint64_t v_n = 0;
uint64_t v_i = 0;
v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
if (((uint64_t)(a_prev.len)) == 0) {
v_i = v_filter_distance;
while (v_i < ((uint64_t)(a_curr.len))) {
a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + (a_curr.ptr[(v_i - v_filter_distance)] / 2)));
v_i += 1;
}
} else {
v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len)));
v_i = 0;
while ((v_i < v_n) && (v_i < v_filter_distance)) {
a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + (a_prev.ptr[v_i] / 2)));
v_i += 1;
}
v_i = v_filter_distance;
while (v_i < v_n) {
a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(((((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)])) + ((uint32_t)(a_prev.ptr[v_i]))) / 2)))));
v_i += 1;
}
}
return wuffs_base__make_empty_struct();
}
// -------- func png.decoder.filter_3_distance_3_fallback
static wuffs_base__empty_struct
wuffs_png__decoder__filter_3_distance_3_fallback(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev) {
wuffs_base__slice_u8 v_curr = {0};
wuffs_base__slice_u8 v_prev = {0};
uint8_t v_fa0 = 0;
uint8_t v_fa1 = 0;
uint8_t v_fa2 = 0;
if (((uint64_t)(a_prev.len)) == 0) {
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
v_curr.len = 3;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6);
while (v_curr.ptr < i_end0_curr) {
v_fa0 = ((uint8_t)((v_fa0 / 2) + v_curr.ptr[0]));
v_curr.ptr[0] = v_fa0;
v_fa1 = ((uint8_t)((v_fa1 / 2) + v_curr.ptr[1]));
v_curr.ptr[1] = v_fa1;
v_fa2 = ((uint8_t)((v_fa2 / 2) + v_curr.ptr[2]));
v_curr.ptr[2] = v_fa2;
v_curr.ptr += 3;
v_fa0 = ((uint8_t)((v_fa0 / 2) + v_curr.ptr[0]));
v_curr.ptr[0] = v_fa0;
v_fa1 = ((uint8_t)((v_fa1 / 2) + v_curr.ptr[1]));
v_curr.ptr[1] = v_fa1;
v_fa2 = ((uint8_t)((v_fa2 / 2) + v_curr.ptr[2]));
v_curr.ptr[2] = v_fa2;
v_curr.ptr += 3;
}
v_curr.len = 3;
uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
while (v_curr.ptr < i_end1_curr) {
v_fa0 = ((uint8_t)((v_fa0 / 2) + v_curr.ptr[0]));
v_curr.ptr[0] = v_fa0;
v_fa1 = ((uint8_t)((v_fa1 / 2) + v_curr.ptr[1]));
v_curr.ptr[1] = v_fa1;
v_fa2 = ((uint8_t)((v_fa2 / 2) + v_curr.ptr[2]));
v_curr.ptr[2] = v_fa2;
v_curr.ptr += 3;
}
v_curr.len = 0;
}
} else {
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
wuffs_base__slice_u8 i_slice_prev = a_prev;
v_prev.ptr = i_slice_prev.ptr;
i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
v_curr.len = 3;
v_prev.len = 3;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6);
while (v_curr.ptr < i_end0_curr) {
v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0]))) / 2))) + v_curr.ptr[0]));
v_curr.ptr[0] = v_fa0;
v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1]))) / 2))) + v_curr.ptr[1]));
v_curr.ptr[1] = v_fa1;
v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2]))) / 2))) + v_curr.ptr[2]));
v_curr.ptr[2] = v_fa2;
v_curr.ptr += 3;
v_prev.ptr += 3;
v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0]))) / 2))) + v_curr.ptr[0]));
v_curr.ptr[0] = v_fa0;
v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1]))) / 2))) + v_curr.ptr[1]));
v_curr.ptr[1] = v_fa1;
v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2]))) / 2))) + v_curr.ptr[2]));
v_curr.ptr[2] = v_fa2;
v_curr.ptr += 3;
v_prev.ptr += 3;
}
v_curr.len = 3;
v_prev.len = 3;
uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
while (v_curr.ptr < i_end1_curr) {
v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0]))) / 2))) + v_curr.ptr[0]));
v_curr.ptr[0] = v_fa0;
v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1]))) / 2))) + v_curr.ptr[1]));
v_curr.ptr[1] = v_fa1;
v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2]))) / 2))) + v_curr.ptr[2]));
v_curr.ptr[2] = v_fa2;
v_curr.ptr += 3;
v_prev.ptr += 3;
}
v_curr.len = 0;
v_prev.len = 0;
}
}
return wuffs_base__make_empty_struct();
}
// -------- func png.decoder.filter_3_distance_4_fallback
static wuffs_base__empty_struct
wuffs_png__decoder__filter_3_distance_4_fallback(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev) {
wuffs_base__slice_u8 v_curr = {0};
wuffs_base__slice_u8 v_prev = {0};
uint8_t v_fa0 = 0;
uint8_t v_fa1 = 0;
uint8_t v_fa2 = 0;
uint8_t v_fa3 = 0;
if (((uint64_t)(a_prev.len)) == 0) {
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
v_curr.len = 4;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
while (v_curr.ptr < i_end0_curr) {
v_fa0 = ((uint8_t)((v_fa0 / 2) + v_curr.ptr[0]));
v_curr.ptr[0] = v_fa0;
v_fa1 = ((uint8_t)((v_fa1 / 2) + v_curr.ptr[1]));
v_curr.ptr[1] = v_fa1;
v_fa2 = ((uint8_t)((v_fa2 / 2) + v_curr.ptr[2]));
v_curr.ptr[2] = v_fa2;
v_fa3 = ((uint8_t)((v_fa3 / 2) + v_curr.ptr[3]));
v_curr.ptr[3] = v_fa3;
v_curr.ptr += 4;
}
v_curr.len = 0;
}
} else {
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
wuffs_base__slice_u8 i_slice_prev = a_prev;
v_prev.ptr = i_slice_prev.ptr;
i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
v_curr.len = 4;
v_prev.len = 4;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
while (v_curr.ptr < i_end0_curr) {
v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0]))) / 2))) + v_curr.ptr[0]));
v_curr.ptr[0] = v_fa0;
v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1]))) / 2))) + v_curr.ptr[1]));
v_curr.ptr[1] = v_fa1;
v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2]))) / 2))) + v_curr.ptr[2]));
v_curr.ptr[2] = v_fa2;
v_fa3 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa3)) + ((uint32_t)(v_prev.ptr[3]))) / 2))) + v_curr.ptr[3]));
v_curr.ptr[3] = v_fa3;
v_curr.ptr += 4;
v_prev.ptr += 4;
}
v_curr.len = 0;
v_prev.len = 0;
}
}
return wuffs_base__make_empty_struct();
}
// -------- func png.decoder.filter_4
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev) {
return (*self->private_impl.choosy_filter_4)(self, a_curr, a_prev);
}
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4__choosy_default(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev) {
uint64_t v_filter_distance = 0;
uint64_t v_n = 0;
uint64_t v_i = 0;
uint32_t v_fa = 0;
uint32_t v_fb = 0;
uint32_t v_fc = 0;
uint32_t v_pp = 0;
uint32_t v_pa = 0;
uint32_t v_pb = 0;
uint32_t v_pc = 0;
v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance));
v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len)));
v_i = 0;
while ((v_i < v_n) && (v_i < v_filter_distance)) {
a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + a_prev.ptr[v_i]));
v_i += 1;
}
v_i = v_filter_distance;
while (v_i < v_n) {
v_fa = ((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)]));
v_fb = ((uint32_t)(a_prev.ptr[v_i]));
v_fc = ((uint32_t)(a_prev.ptr[(v_i - v_filter_distance)]));
v_pp = ((uint32_t)(((uint32_t)(v_fa + v_fb)) - v_fc));
v_pa = ((uint32_t)(v_pp - v_fa));
if (v_pa >= 2147483648) {
v_pa = ((uint32_t)(0 - v_pa));
}
v_pb = ((uint32_t)(v_pp - v_fb));
if (v_pb >= 2147483648) {
v_pb = ((uint32_t)(0 - v_pb));
}
v_pc = ((uint32_t)(v_pp - v_fc));
if (v_pc >= 2147483648) {
v_pc = ((uint32_t)(0 - v_pc));
}
if ((v_pa <= v_pb) && (v_pa <= v_pc)) {
} else if (v_pb <= v_pc) {
v_fa = v_fb;
} else {
v_fa = v_fc;
}
a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)((v_fa & 255)))));
v_i += 1;
}
return wuffs_base__make_empty_struct();
}
// -------- func png.decoder.filter_4_distance_3_fallback
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4_distance_3_fallback(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev) {
wuffs_base__slice_u8 v_curr = {0};
wuffs_base__slice_u8 v_prev = {0};
uint32_t v_fa0 = 0;
uint32_t v_fa1 = 0;
uint32_t v_fa2 = 0;
uint32_t v_fb0 = 0;
uint32_t v_fb1 = 0;
uint32_t v_fb2 = 0;
uint32_t v_fc0 = 0;
uint32_t v_fc1 = 0;
uint32_t v_fc2 = 0;
uint32_t v_pp0 = 0;
uint32_t v_pp1 = 0;
uint32_t v_pp2 = 0;
uint32_t v_pa0 = 0;
uint32_t v_pa1 = 0;
uint32_t v_pa2 = 0;
uint32_t v_pb0 = 0;
uint32_t v_pb1 = 0;
uint32_t v_pb2 = 0;
uint32_t v_pc0 = 0;
uint32_t v_pc1 = 0;
uint32_t v_pc2 = 0;
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
wuffs_base__slice_u8 i_slice_prev = a_prev;
v_prev.ptr = i_slice_prev.ptr;
i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
v_curr.len = 3;
v_prev.len = 3;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
while (v_curr.ptr < i_end0_curr) {
v_fb0 = ((uint32_t)(v_prev.ptr[0]));
v_pp0 = ((uint32_t)(((uint32_t)(v_fa0 + v_fb0)) - v_fc0));
v_pa0 = ((uint32_t)(v_pp0 - v_fa0));
if (v_pa0 >= 2147483648) {
v_pa0 = ((uint32_t)(0 - v_pa0));
}
v_pb0 = ((uint32_t)(v_pp0 - v_fb0));
if (v_pb0 >= 2147483648) {
v_pb0 = ((uint32_t)(0 - v_pb0));
}
v_pc0 = ((uint32_t)(v_pp0 - v_fc0));
if (v_pc0 >= 2147483648) {
v_pc0 = ((uint32_t)(0 - v_pc0));
}
if ((v_pa0 <= v_pb0) && (v_pa0 <= v_pc0)) {
} else if (v_pb0 <= v_pc0) {
v_fa0 = v_fb0;
} else {
v_fa0 = v_fc0;
}
v_curr.ptr[0] = ((uint8_t)(v_curr.ptr[0] + ((uint8_t)((v_fa0 & 255)))));
v_fa0 = ((uint32_t)(v_curr.ptr[0]));
v_fc0 = v_fb0;
v_fb1 = ((uint32_t)(v_prev.ptr[1]));
v_pp1 = ((uint32_t)(((uint32_t)(v_fa1 + v_fb1)) - v_fc1));
v_pa1 = ((uint32_t)(v_pp1 - v_fa1));
if (v_pa1 >= 2147483648) {
v_pa1 = ((uint32_t)(0 - v_pa1));
}
v_pb1 = ((uint32_t)(v_pp1 - v_fb1));
if (v_pb1 >= 2147483648) {
v_pb1 = ((uint32_t)(0 - v_pb1));
}
v_pc1 = ((uint32_t)(v_pp1 - v_fc1));
if (v_pc1 >= 2147483648) {
v_pc1 = ((uint32_t)(0 - v_pc1));
}
if ((v_pa1 <= v_pb1) && (v_pa1 <= v_pc1)) {
} else if (v_pb1 <= v_pc1) {
v_fa1 = v_fb1;
} else {
v_fa1 = v_fc1;
}
v_curr.ptr[1] = ((uint8_t)(v_curr.ptr[1] + ((uint8_t)((v_fa1 & 255)))));
v_fa1 = ((uint32_t)(v_curr.ptr[1]));
v_fc1 = v_fb1;
v_fb2 = ((uint32_t)(v_prev.ptr[2]));
v_pp2 = ((uint32_t)(((uint32_t)(v_fa2 + v_fb2)) - v_fc2));
v_pa2 = ((uint32_t)(v_pp2 - v_fa2));
if (v_pa2 >= 2147483648) {
v_pa2 = ((uint32_t)(0 - v_pa2));
}
v_pb2 = ((uint32_t)(v_pp2 - v_fb2));
if (v_pb2 >= 2147483648) {
v_pb2 = ((uint32_t)(0 - v_pb2));
}
v_pc2 = ((uint32_t)(v_pp2 - v_fc2));
if (v_pc2 >= 2147483648) {
v_pc2 = ((uint32_t)(0 - v_pc2));
}
if ((v_pa2 <= v_pb2) && (v_pa2 <= v_pc2)) {
} else if (v_pb2 <= v_pc2) {
v_fa2 = v_fb2;
} else {
v_fa2 = v_fc2;
}
v_curr.ptr[2] = ((uint8_t)(v_curr.ptr[2] + ((uint8_t)((v_fa2 & 255)))));
v_fa2 = ((uint32_t)(v_curr.ptr[2]));
v_fc2 = v_fb2;
v_curr.ptr += 3;
v_prev.ptr += 3;
}
v_curr.len = 0;
v_prev.len = 0;
}
return wuffs_base__make_empty_struct();
}
// -------- func png.decoder.filter_4_distance_4_fallback
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4_distance_4_fallback(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev) {
wuffs_base__slice_u8 v_curr = {0};
wuffs_base__slice_u8 v_prev = {0};
uint32_t v_fa0 = 0;
uint32_t v_fa1 = 0;
uint32_t v_fa2 = 0;
uint32_t v_fa3 = 0;
uint32_t v_fb0 = 0;
uint32_t v_fb1 = 0;
uint32_t v_fb2 = 0;
uint32_t v_fb3 = 0;
uint32_t v_fc0 = 0;
uint32_t v_fc1 = 0;
uint32_t v_fc2 = 0;
uint32_t v_fc3 = 0;
uint32_t v_pp0 = 0;
uint32_t v_pp1 = 0;
uint32_t v_pp2 = 0;
uint32_t v_pp3 = 0;
uint32_t v_pa0 = 0;
uint32_t v_pa1 = 0;
uint32_t v_pa2 = 0;
uint32_t v_pa3 = 0;
uint32_t v_pb0 = 0;
uint32_t v_pb1 = 0;
uint32_t v_pb2 = 0;
uint32_t v_pb3 = 0;
uint32_t v_pc0 = 0;
uint32_t v_pc1 = 0;
uint32_t v_pc2 = 0;
uint32_t v_pc3 = 0;
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
wuffs_base__slice_u8 i_slice_prev = a_prev;
v_prev.ptr = i_slice_prev.ptr;
i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
v_curr.len = 4;
v_prev.len = 4;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
while (v_curr.ptr < i_end0_curr) {
v_fb0 = ((uint32_t)(v_prev.ptr[0]));
v_pp0 = ((uint32_t)(((uint32_t)(v_fa0 + v_fb0)) - v_fc0));
v_pa0 = ((uint32_t)(v_pp0 - v_fa0));
if (v_pa0 >= 2147483648) {
v_pa0 = ((uint32_t)(0 - v_pa0));
}
v_pb0 = ((uint32_t)(v_pp0 - v_fb0));
if (v_pb0 >= 2147483648) {
v_pb0 = ((uint32_t)(0 - v_pb0));
}
v_pc0 = ((uint32_t)(v_pp0 - v_fc0));
if (v_pc0 >= 2147483648) {
v_pc0 = ((uint32_t)(0 - v_pc0));
}
if ((v_pa0 <= v_pb0) && (v_pa0 <= v_pc0)) {
} else if (v_pb0 <= v_pc0) {
v_fa0 = v_fb0;
} else {
v_fa0 = v_fc0;
}
v_curr.ptr[0] = ((uint8_t)(v_curr.ptr[0] + ((uint8_t)((v_fa0 & 255)))));
v_fa0 = ((uint32_t)(v_curr.ptr[0]));
v_fc0 = v_fb0;
v_fb1 = ((uint32_t)(v_prev.ptr[1]));
v_pp1 = ((uint32_t)(((uint32_t)(v_fa1 + v_fb1)) - v_fc1));
v_pa1 = ((uint32_t)(v_pp1 - v_fa1));
if (v_pa1 >= 2147483648) {
v_pa1 = ((uint32_t)(0 - v_pa1));
}
v_pb1 = ((uint32_t)(v_pp1 - v_fb1));
if (v_pb1 >= 2147483648) {
v_pb1 = ((uint32_t)(0 - v_pb1));
}
v_pc1 = ((uint32_t)(v_pp1 - v_fc1));
if (v_pc1 >= 2147483648) {
v_pc1 = ((uint32_t)(0 - v_pc1));
}
if ((v_pa1 <= v_pb1) && (v_pa1 <= v_pc1)) {
} else if (v_pb1 <= v_pc1) {
v_fa1 = v_fb1;
} else {
v_fa1 = v_fc1;
}
v_curr.ptr[1] = ((uint8_t)(v_curr.ptr[1] + ((uint8_t)((v_fa1 & 255)))));
v_fa1 = ((uint32_t)(v_curr.ptr[1]));
v_fc1 = v_fb1;
v_fb2 = ((uint32_t)(v_prev.ptr[2]));
v_pp2 = ((uint32_t)(((uint32_t)(v_fa2 + v_fb2)) - v_fc2));
v_pa2 = ((uint32_t)(v_pp2 - v_fa2));
if (v_pa2 >= 2147483648) {
v_pa2 = ((uint32_t)(0 - v_pa2));
}
v_pb2 = ((uint32_t)(v_pp2 - v_fb2));
if (v_pb2 >= 2147483648) {
v_pb2 = ((uint32_t)(0 - v_pb2));
}
v_pc2 = ((uint32_t)(v_pp2 - v_fc2));
if (v_pc2 >= 2147483648) {
v_pc2 = ((uint32_t)(0 - v_pc2));
}
if ((v_pa2 <= v_pb2) && (v_pa2 <= v_pc2)) {
} else if (v_pb2 <= v_pc2) {
v_fa2 = v_fb2;
} else {
v_fa2 = v_fc2;
}
v_curr.ptr[2] = ((uint8_t)(v_curr.ptr[2] + ((uint8_t)((v_fa2 & 255)))));
v_fa2 = ((uint32_t)(v_curr.ptr[2]));
v_fc2 = v_fb2;
v_fb3 = ((uint32_t)(v_prev.ptr[3]));
v_pp3 = ((uint32_t)(((uint32_t)(v_fa3 + v_fb3)) - v_fc3));
v_pa3 = ((uint32_t)(v_pp3 - v_fa3));
if (v_pa3 >= 2147483648) {
v_pa3 = ((uint32_t)(0 - v_pa3));
}
v_pb3 = ((uint32_t)(v_pp3 - v_fb3));
if (v_pb3 >= 2147483648) {
v_pb3 = ((uint32_t)(0 - v_pb3));
}
v_pc3 = ((uint32_t)(v_pp3 - v_fc3));
if (v_pc3 >= 2147483648) {
v_pc3 = ((uint32_t)(0 - v_pc3));
}
if ((v_pa3 <= v_pb3) && (v_pa3 <= v_pc3)) {
} else if (v_pb3 <= v_pc3) {
v_fa3 = v_fb3;
} else {
v_fa3 = v_fc3;
}
v_curr.ptr[3] = ((uint8_t)(v_curr.ptr[3] + ((uint8_t)((v_fa3 & 255)))));
v_fa3 = ((uint32_t)(v_curr.ptr[3]));
v_fc3 = v_fb3;
v_curr.ptr += 4;
v_prev.ptr += 4;
}
v_curr.len = 0;
v_prev.len = 0;
}
return wuffs_base__make_empty_struct();
}
// โ€ผ WUFFS MULTI-FILE SECTION +x86_sse42
// -------- func png.decoder.filter_1_distance_4_x86_sse42
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
static wuffs_base__empty_struct
wuffs_png__decoder__filter_1_distance_4_x86_sse42(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr) {
wuffs_base__slice_u8 v_curr = {0};
__m128i v_x128 = {0};
__m128i v_a128 = {0};
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
v_curr.len = 4;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
while (v_curr.ptr < i_end0_curr) {
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_add_epi8(v_x128, v_a128);
v_a128 = v_x128;
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 4;
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_add_epi8(v_x128, v_a128);
v_a128 = v_x128;
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 4;
}
v_curr.len = 4;
uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
while (v_curr.ptr < i_end1_curr) {
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_add_epi8(v_x128, v_a128);
v_a128 = v_x128;
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 4;
}
v_curr.len = 0;
}
return wuffs_base__make_empty_struct();
}
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// โ€ผ WUFFS MULTI-FILE SECTION -x86_sse42
// โ€ผ WUFFS MULTI-FILE SECTION +x86_sse42
// -------- func png.decoder.filter_3_distance_4_x86_sse42
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
static wuffs_base__empty_struct
wuffs_png__decoder__filter_3_distance_4_x86_sse42(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev) {
wuffs_base__slice_u8 v_curr = {0};
wuffs_base__slice_u8 v_prev = {0};
__m128i v_x128 = {0};
__m128i v_a128 = {0};
__m128i v_b128 = {0};
__m128i v_p128 = {0};
__m128i v_k128 = {0};
if (((uint64_t)(a_prev.len)) == 0) {
v_k128 = _mm_set1_epi8((int8_t)(254));
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
v_curr.len = 4;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
while (v_curr.ptr < i_end0_curr) {
v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128);
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_add_epi8(v_x128, v_p128);
v_a128 = v_x128;
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 4;
v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128);
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_add_epi8(v_x128, v_p128);
v_a128 = v_x128;
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 4;
}
v_curr.len = 4;
uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
while (v_curr.ptr < i_end1_curr) {
v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128);
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_add_epi8(v_x128, v_p128);
v_a128 = v_x128;
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 4;
}
v_curr.len = 0;
}
} else {
v_k128 = _mm_set1_epi8((int8_t)(1));
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
wuffs_base__slice_u8 i_slice_prev = a_prev;
v_prev.ptr = i_slice_prev.ptr;
i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
v_curr.len = 4;
v_prev.len = 4;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
while (v_curr.ptr < i_end0_curr) {
v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_p128 = _mm_avg_epu8(v_a128, v_b128);
v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128)));
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_add_epi8(v_x128, v_p128);
v_a128 = v_x128;
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 4;
v_prev.ptr += 4;
v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_p128 = _mm_avg_epu8(v_a128, v_b128);
v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128)));
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_add_epi8(v_x128, v_p128);
v_a128 = v_x128;
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 4;
v_prev.ptr += 4;
}
v_curr.len = 4;
v_prev.len = 4;
uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
while (v_curr.ptr < i_end1_curr) {
v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_p128 = _mm_avg_epu8(v_a128, v_b128);
v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128)));
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_add_epi8(v_x128, v_p128);
v_a128 = v_x128;
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 4;
v_prev.ptr += 4;
}
v_curr.len = 0;
v_prev.len = 0;
}
}
return wuffs_base__make_empty_struct();
}
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// โ€ผ WUFFS MULTI-FILE SECTION -x86_sse42
// โ€ผ WUFFS MULTI-FILE SECTION +x86_sse42
// -------- func png.decoder.filter_4_distance_3_x86_sse42
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4_distance_3_x86_sse42(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev) {
wuffs_base__slice_u8 v_curr = {0};
wuffs_base__slice_u8 v_prev = {0};
__m128i v_x128 = {0};
__m128i v_a128 = {0};
__m128i v_b128 = {0};
__m128i v_c128 = {0};
__m128i v_p128 = {0};
__m128i v_pa128 = {0};
__m128i v_pb128 = {0};
__m128i v_pc128 = {0};
__m128i v_smallest128 = {0};
__m128i v_z128 = {0};
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
wuffs_base__slice_u8 i_slice_prev = a_prev;
v_prev.ptr = i_slice_prev.ptr;
i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
v_curr.len = 4;
v_prev.len = 4;
uint8_t* i_end0_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 7, 6);
while (v_curr.ptr < i_end0_curr) {
v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
v_pa128 = _mm_sub_epi16(v_b128, v_c128);
v_pb128 = _mm_sub_epi16(v_a128, v_c128);
v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
v_pa128 = _mm_abs_epi16(v_pa128);
v_pb128 = _mm_abs_epi16(v_pb128);
v_pc128 = _mm_abs_epi16(v_pc128);
v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
v_x128 = _mm_add_epi8(v_x128, v_p128);
v_a128 = v_x128;
v_c128 = v_b128;
v_x128 = _mm_packus_epi16(v_x128, v_x128);
wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 3;
v_prev.ptr += 3;
v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
v_pa128 = _mm_sub_epi16(v_b128, v_c128);
v_pb128 = _mm_sub_epi16(v_a128, v_c128);
v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
v_pa128 = _mm_abs_epi16(v_pa128);
v_pb128 = _mm_abs_epi16(v_pb128);
v_pc128 = _mm_abs_epi16(v_pc128);
v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
v_x128 = _mm_add_epi8(v_x128, v_p128);
v_a128 = v_x128;
v_c128 = v_b128;
v_x128 = _mm_packus_epi16(v_x128, v_x128);
wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 3;
v_prev.ptr += 3;
}
v_curr.len = 4;
v_prev.len = 4;
uint8_t* i_end1_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 4, 3);
while (v_curr.ptr < i_end1_curr) {
v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
v_pa128 = _mm_sub_epi16(v_b128, v_c128);
v_pb128 = _mm_sub_epi16(v_a128, v_c128);
v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
v_pa128 = _mm_abs_epi16(v_pa128);
v_pb128 = _mm_abs_epi16(v_pb128);
v_pc128 = _mm_abs_epi16(v_pc128);
v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
v_x128 = _mm_add_epi8(v_x128, v_p128);
v_a128 = v_x128;
v_c128 = v_b128;
v_x128 = _mm_packus_epi16(v_x128, v_x128);
wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 3;
v_prev.ptr += 3;
}
v_curr.len = 3;
v_prev.len = 3;
uint8_t* i_end2_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3);
while (v_curr.ptr < i_end2_curr) {
v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u24le__no_bounds_check(v_prev.ptr)));
v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
v_pa128 = _mm_sub_epi16(v_b128, v_c128);
v_pb128 = _mm_sub_epi16(v_a128, v_c128);
v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
v_pa128 = _mm_abs_epi16(v_pa128);
v_pb128 = _mm_abs_epi16(v_pb128);
v_pc128 = _mm_abs_epi16(v_pc128);
v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u24le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
v_x128 = _mm_add_epi8(v_x128, v_p128);
v_x128 = _mm_packus_epi16(v_x128, v_x128);
wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 3;
v_prev.ptr += 3;
}
v_curr.len = 0;
v_prev.len = 0;
}
return wuffs_base__make_empty_struct();
}
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// โ€ผ WUFFS MULTI-FILE SECTION -x86_sse42
// โ€ผ WUFFS MULTI-FILE SECTION +x86_sse42
// -------- func png.decoder.filter_4_distance_4_x86_sse42
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2")
static wuffs_base__empty_struct
wuffs_png__decoder__filter_4_distance_4_x86_sse42(
wuffs_png__decoder* self,
wuffs_base__slice_u8 a_curr,
wuffs_base__slice_u8 a_prev) {
wuffs_base__slice_u8 v_curr = {0};
wuffs_base__slice_u8 v_prev = {0};
__m128i v_x128 = {0};
__m128i v_a128 = {0};
__m128i v_b128 = {0};
__m128i v_c128 = {0};
__m128i v_p128 = {0};
__m128i v_pa128 = {0};
__m128i v_pb128 = {0};
__m128i v_pc128 = {0};
__m128i v_smallest128 = {0};
__m128i v_z128 = {0};
{
wuffs_base__slice_u8 i_slice_curr = a_curr;
v_curr.ptr = i_slice_curr.ptr;
wuffs_base__slice_u8 i_slice_prev = a_prev;
v_prev.ptr = i_slice_prev.ptr;
i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len)));
v_curr.len = 4;
v_prev.len = 4;
uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8);
while (v_curr.ptr < i_end0_curr) {
v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
v_pa128 = _mm_sub_epi16(v_b128, v_c128);
v_pb128 = _mm_sub_epi16(v_a128, v_c128);
v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
v_pa128 = _mm_abs_epi16(v_pa128);
v_pb128 = _mm_abs_epi16(v_pb128);
v_pc128 = _mm_abs_epi16(v_pc128);
v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
v_x128 = _mm_add_epi8(v_x128, v_p128);
v_a128 = v_x128;
v_c128 = v_b128;
v_x128 = _mm_packus_epi16(v_x128, v_x128);
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 4;
v_prev.ptr += 4;
v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
v_pa128 = _mm_sub_epi16(v_b128, v_c128);
v_pb128 = _mm_sub_epi16(v_a128, v_c128);
v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
v_pa128 = _mm_abs_epi16(v_pa128);
v_pb128 = _mm_abs_epi16(v_pb128);
v_pc128 = _mm_abs_epi16(v_pc128);
v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
v_x128 = _mm_add_epi8(v_x128, v_p128);
v_a128 = v_x128;
v_c128 = v_b128;
v_x128 = _mm_packus_epi16(v_x128, v_x128);
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 4;
v_prev.ptr += 4;
}
v_curr.len = 4;
v_prev.len = 4;
uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4);
while (v_curr.ptr < i_end1_curr) {
v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr)));
v_b128 = _mm_unpacklo_epi8(v_b128, v_z128);
v_pa128 = _mm_sub_epi16(v_b128, v_c128);
v_pb128 = _mm_sub_epi16(v_a128, v_c128);
v_pc128 = _mm_add_epi16(v_pa128, v_pb128);
v_pa128 = _mm_abs_epi16(v_pa128);
v_pb128 = _mm_abs_epi16(v_pb128);
v_pc128 = _mm_abs_epi16(v_pc128);
v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128));
v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128));
v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr)));
v_x128 = _mm_unpacklo_epi8(v_x128, v_z128);
v_x128 = _mm_add_epi8(v_x128, v_p128);
v_a128 = v_x128;
v_c128 = v_b128;
v_x128 = _mm_packus_epi16(v_x128, v_x128);
wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128))));
v_curr.ptr += 4;
v_prev.ptr += 4;
}
v_curr.len = 0;
v_prev.len = 0;
}
return wuffs_base__make_empty_struct();
}
#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
// โ€ผ WUFFS MULTI-FILE SECTION -x86_sse42
// -------- func png.decoder.set_quirk_enabled
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_png__decoder__set_quirk_enabled(
wuffs_png__decoder* self,
uint32_t a_quirk,
bool a_enabled) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
if (a_quirk == 1) {
self->private_impl.f_ignore_checksum = a_enabled;
wuffs_zlib__decoder__set_quirk_enabled(&self->private_data.f_zlib, a_quirk, a_enabled);
}
return wuffs_base__make_empty_struct();
}
// -------- func png.decoder.decode_image_config
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_png__decoder__decode_image_config(
wuffs_png__decoder* self,
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 1)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint64_t v_magic = 0;
uint64_t v_mark = 0;
uint32_t v_checksum_have = 0;
uint32_t v_checksum_want = 0;
wuffs_base__status v_status = wuffs_base__make_status(NULL);
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
if (coro_susp_point) {
v_checksum_have = self->private_data.s_decode_image_config[0].v_checksum_have;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_call_sequence != 0) {
status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
goto exit;
} else if ( ! self->private_impl.f_seen_ihdr) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint64_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
t_0 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
iop_a_src += 8;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0;
if (num_bits_0 == 56) {
t_0 = ((uint64_t)(*scratch));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0)) << 56;
}
}
v_magic = t_0;
}
if (v_magic != 727905341920923785) {
status = wuffs_base__make_status(wuffs_png__error__bad_header);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
uint64_t t_1;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) {
t_1 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src);
iop_a_src += 8;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
if (num_bits_1 == 56) {
t_1 = ((uint64_t)(*scratch));
break;
}
num_bits_1 += 8;
*scratch |= ((uint64_t)(num_bits_1)) << 56;
}
}
v_magic = t_1;
}
if (v_magic != 5927942488114331648) {
if (v_magic == 5278895250759221248) {
status = wuffs_base__make_status(wuffs_png__error__unsupported_cgbi_extension);
goto exit;
}
status = wuffs_base__make_status(wuffs_png__error__bad_header);
goto exit;
}
self->private_impl.f_chunk_type_array[0] = 73;
self->private_impl.f_chunk_type_array[1] = 72;
self->private_impl.f_chunk_type_array[2] = 68;
self->private_impl.f_chunk_type_array[3] = 82;
wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
while (true) {
v_mark = ((uint64_t)(iop_a_src - io0_a_src));
{
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
wuffs_base__status t_2 = wuffs_png__decoder__decode_ihdr(self, a_src);
v_status = t_2;
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
}
if ( ! self->private_impl.f_ignore_checksum) {
v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
}
if (wuffs_base__status__is_ok(&v_status)) {
goto label__0__break;
}
status = v_status;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
}
label__0__break:;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
uint32_t t_3;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
if (num_bits_3 == 24) {
t_3 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_3 += 8;
*scratch |= ((uint64_t)(num_bits_3));
}
}
v_checksum_want = t_3;
}
if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != v_checksum_want)) {
status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
goto exit;
}
self->private_impl.f_seen_ihdr = true;
} else if (self->private_impl.f_metadata_fourcc != 0) {
self->private_impl.f_call_sequence = 16;
status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
goto ok;
}
while (true) {
while (((uint64_t)(io2_a_src - iop_a_src)) < 8) {
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
}
self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32)));
if (self->private_impl.f_chunk_type == 1413563465) {
if ( ! self->private_impl.f_seen_actl || self->private_impl.f_seen_fctl) {
goto label__1__break;
}
self->private_impl.f_seen_idat = true;
} else if (self->private_impl.f_chunk_type == 1413571686) {
if (self->private_impl.f_seen_idat && self->private_impl.f_seen_fctl) {
goto label__1__break;
}
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
iop_a_src += 8;
if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32) == 0)) {
self->private_impl.f_chunk_type_array[0] = ((uint8_t)(((self->private_impl.f_chunk_type >> 0) & 255)));
self->private_impl.f_chunk_type_array[1] = ((uint8_t)(((self->private_impl.f_chunk_type >> 8) & 255)));
self->private_impl.f_chunk_type_array[2] = ((uint8_t)(((self->private_impl.f_chunk_type >> 16) & 255)));
self->private_impl.f_chunk_type_array[3] = ((uint8_t)(((self->private_impl.f_chunk_type >> 24) & 255)));
wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
}
while (true) {
v_mark = ((uint64_t)(iop_a_src - io0_a_src));
{
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
wuffs_base__status t_4 = wuffs_png__decoder__decode_other_chunk(self, a_src, false);
v_status = t_4;
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
}
if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32) == 0)) {
v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
}
if (wuffs_base__status__is_ok(&v_status)) {
goto label__2__break;
}
status = v_status;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
}
label__2__break:;
if (self->private_impl.f_metadata_fourcc != 0) {
self->private_impl.f_call_sequence = 16;
status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
goto ok;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
uint32_t t_5;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_5 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
if (num_bits_5 == 24) {
t_5 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_5 += 8;
*scratch |= ((uint64_t)(num_bits_5));
}
}
v_checksum_want = t_5;
}
if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32) == 0) && (v_checksum_have != v_checksum_want)) {
status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
goto exit;
}
}
label__1__break:;
if ((self->private_impl.f_color_type == 3) && ! self->private_impl.f_seen_plte) {
status = wuffs_base__make_status(wuffs_png__error__missing_palette);
goto exit;
}
self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
self->private_impl.f_first_config_io_position = self->private_impl.f_frame_config_io_position;
if (a_dst != NULL) {
wuffs_base__image_config__set(
a_dst,
self->private_impl.f_dst_pixfmt,
0,
self->private_impl.f_width,
self->private_impl.f_height,
self->private_impl.f_first_config_io_position,
((self->private_impl.f_color_type <= 3) && ! self->private_impl.f_seen_trns));
}
if ( ! self->private_impl.f_seen_actl) {
self->private_impl.f_num_animation_frames_value = 1;
self->private_impl.f_first_rect_x0 = 0;
self->private_impl.f_first_rect_y0 = 0;
self->private_impl.f_first_rect_x1 = self->private_impl.f_width;
self->private_impl.f_first_rect_y1 = self->private_impl.f_height;
self->private_impl.f_first_duration = 0;
self->private_impl.f_first_disposal = 0;
self->private_impl.f_first_overwrite_instead_of_blend = false;
}
self->private_impl.f_call_sequence = 32;
ok:
self->private_impl.p_decode_image_config[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
self->private_data.s_decode_image_config[0].v_checksum_have = v_checksum_have;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func png.decoder.decode_ihdr
static wuffs_base__status
wuffs_png__decoder__decode_ihdr(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_a32 = 0;
uint8_t v_a8 = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_ihdr[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint32_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_ihdr[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_ihdr[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
if (num_bits_0 == 24) {
t_0 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0));
}
}
v_a32 = t_0;
}
if ((v_a32 == 0) || (v_a32 >= 2147483648)) {
status = wuffs_base__make_status(wuffs_png__error__bad_header);
goto exit;
} else if (v_a32 >= 16777216) {
status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
goto exit;
}
self->private_impl.f_width = v_a32;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
uint32_t t_1;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_ihdr[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_ihdr[0].scratch;
uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
if (num_bits_1 == 24) {
t_1 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_1 += 8;
*scratch |= ((uint64_t)(num_bits_1));
}
}
v_a32 = t_1;
}
if ((v_a32 == 0) || (v_a32 >= 2147483648)) {
status = wuffs_base__make_status(wuffs_png__error__bad_header);
goto exit;
} else if (v_a32 >= 16777216) {
status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
goto exit;
}
self->private_impl.f_height = v_a32;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_2 = *iop_a_src++;
v_a8 = t_2;
}
if (v_a8 > 16) {
status = wuffs_base__make_status(wuffs_png__error__bad_header);
goto exit;
}
self->private_impl.f_depth = v_a8;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_3 = *iop_a_src++;
v_a8 = t_3;
}
if ((v_a8 == 1) || (v_a8 == 5) || (v_a8 > 6)) {
status = wuffs_base__make_status(wuffs_png__error__bad_header);
goto exit;
}
self->private_impl.f_color_type = v_a8;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_4 = *iop_a_src++;
v_a8 = t_4;
}
if (v_a8 != 0) {
status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_5 = *iop_a_src++;
v_a8 = t_5;
}
if (v_a8 != 0) {
status = wuffs_base__make_status(wuffs_png__error__bad_header);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_6 = *iop_a_src++;
v_a8 = t_6;
}
if (v_a8 == 0) {
self->private_impl.f_interlace_pass = 0;
} else if (v_a8 == 1) {
self->private_impl.f_interlace_pass = 1;
self->private_impl.choosy_filter_and_swizzle = (
&wuffs_png__decoder__filter_and_swizzle_tricky);
} else {
status = wuffs_base__make_status(wuffs_png__error__bad_header);
goto exit;
}
self->private_impl.f_filter_distance = 0;
wuffs_png__decoder__assign_filter_distance(self);
if (self->private_impl.f_filter_distance == 0) {
status = wuffs_base__make_status(wuffs_png__error__bad_header);
goto exit;
}
self->private_impl.f_overall_workbuf_length = (((uint64_t)(self->private_impl.f_height)) * (1 + wuffs_png__decoder__calculate_bytes_per_row(self, self->private_impl.f_width)));
wuffs_png__decoder__choose_filter_implementations(self);
goto ok;
ok:
self->private_impl.p_decode_ihdr[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_ihdr[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func png.decoder.assign_filter_distance
static wuffs_base__empty_struct
wuffs_png__decoder__assign_filter_distance(
wuffs_png__decoder* self) {
if (self->private_impl.f_depth < 8) {
if ((self->private_impl.f_depth != 1) && (self->private_impl.f_depth != 2) && (self->private_impl.f_depth != 4)) {
return wuffs_base__make_empty_struct();
} else if (self->private_impl.f_color_type == 0) {
self->private_impl.f_dst_pixfmt = 536870920;
self->private_impl.f_src_pixfmt = 536870920;
} else if (self->private_impl.f_color_type == 3) {
self->private_impl.f_dst_pixfmt = 2198077448;
self->private_impl.f_src_pixfmt = 2198077448;
} else {
return wuffs_base__make_empty_struct();
}
self->private_impl.f_filter_distance = 1;
self->private_impl.choosy_filter_and_swizzle = (
&wuffs_png__decoder__filter_and_swizzle_tricky);
} else if (self->private_impl.f_color_type == 0) {
if (self->private_impl.f_depth == 8) {
self->private_impl.f_dst_pixfmt = 536870920;
self->private_impl.f_src_pixfmt = 536870920;
self->private_impl.f_filter_distance = 1;
} else if (self->private_impl.f_depth == 16) {
if (self->private_impl.f_interlace_pass == 0) {
self->private_impl.f_dst_pixfmt = 536870923;
self->private_impl.f_src_pixfmt = 537919499;
} else {
self->private_impl.f_dst_pixfmt = 2164308923;
self->private_impl.f_src_pixfmt = 2164308923;
}
self->private_impl.f_filter_distance = 2;
}
} else if (self->private_impl.f_color_type == 2) {
if (self->private_impl.f_depth == 8) {
self->private_impl.f_dst_pixfmt = 2147485832;
self->private_impl.f_src_pixfmt = 2684356744;
self->private_impl.f_filter_distance = 3;
} else if (self->private_impl.f_depth == 16) {
self->private_impl.f_dst_pixfmt = 2164308923;
self->private_impl.f_src_pixfmt = 2164308923;
self->private_impl.f_filter_distance = 6;
self->private_impl.choosy_filter_and_swizzle = (
&wuffs_png__decoder__filter_and_swizzle_tricky);
}
} else if (self->private_impl.f_color_type == 3) {
if (self->private_impl.f_depth == 8) {
self->private_impl.f_dst_pixfmt = 2198077448;
self->private_impl.f_src_pixfmt = 2198077448;
self->private_impl.f_filter_distance = 1;
}
} else if (self->private_impl.f_color_type == 4) {
if (self->private_impl.f_depth == 8) {
self->private_impl.f_dst_pixfmt = 2164295816;
self->private_impl.f_src_pixfmt = 2164295816;
self->private_impl.f_filter_distance = 2;
self->private_impl.choosy_filter_and_swizzle = (
&wuffs_png__decoder__filter_and_swizzle_tricky);
} else if (self->private_impl.f_depth == 16) {
self->private_impl.f_dst_pixfmt = 2164308923;
self->private_impl.f_src_pixfmt = 2164308923;
self->private_impl.f_filter_distance = 4;
self->private_impl.choosy_filter_and_swizzle = (
&wuffs_png__decoder__filter_and_swizzle_tricky);
}
} else if (self->private_impl.f_color_type == 6) {
if (self->private_impl.f_depth == 8) {
self->private_impl.f_dst_pixfmt = 2164295816;
self->private_impl.f_src_pixfmt = 2701166728;
self->private_impl.f_filter_distance = 4;
} else if (self->private_impl.f_depth == 16) {
self->private_impl.f_dst_pixfmt = 2164308923;
self->private_impl.f_src_pixfmt = 2164308923;
self->private_impl.f_filter_distance = 8;
self->private_impl.choosy_filter_and_swizzle = (
&wuffs_png__decoder__filter_and_swizzle_tricky);
}
}
return wuffs_base__make_empty_struct();
}
// -------- func png.decoder.calculate_bytes_per_row
static uint64_t
wuffs_png__decoder__calculate_bytes_per_row(
const wuffs_png__decoder* self,
uint32_t a_width) {
uint64_t v_bytes_per_channel = 0;
if (self->private_impl.f_depth == 1) {
return ((uint64_t)(((a_width + 7) / 8)));
} else if (self->private_impl.f_depth == 2) {
return ((uint64_t)(((a_width + 3) / 4)));
} else if (self->private_impl.f_depth == 4) {
return ((uint64_t)(((a_width + 1) / 2)));
}
v_bytes_per_channel = ((uint64_t)((self->private_impl.f_depth >> 3)));
return (((uint64_t)(a_width)) * v_bytes_per_channel * ((uint64_t)(WUFFS_PNG__NUM_CHANNELS[self->private_impl.f_color_type])));
}
// -------- func png.decoder.choose_filter_implementations
static wuffs_base__empty_struct
wuffs_png__decoder__choose_filter_implementations(
wuffs_png__decoder* self) {
if (self->private_impl.f_filter_distance == 3) {
self->private_impl.choosy_filter_1 = (
&wuffs_png__decoder__filter_1_distance_3_fallback);
self->private_impl.choosy_filter_3 = (
&wuffs_png__decoder__filter_3_distance_3_fallback);
self->private_impl.choosy_filter_4 = (
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_4_distance_3_arm_neon :
#endif
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_4_distance_3_x86_sse42 :
#endif
&wuffs_png__decoder__filter_4_distance_3_fallback);
} else if (self->private_impl.f_filter_distance == 4) {
self->private_impl.choosy_filter_1 = (
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_1_distance_4_arm_neon :
#endif
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_1_distance_4_x86_sse42 :
#endif
&wuffs_png__decoder__filter_1_distance_4_fallback);
self->private_impl.choosy_filter_3 = (
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_3_distance_4_arm_neon :
#endif
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_3_distance_4_x86_sse42 :
#endif
&wuffs_png__decoder__filter_3_distance_4_fallback);
self->private_impl.choosy_filter_4 = (
#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON)
wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_4_distance_4_arm_neon :
#endif
#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY)
wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_4_distance_4_x86_sse42 :
#endif
&wuffs_png__decoder__filter_4_distance_4_fallback);
}
return wuffs_base__make_empty_struct();
}
// -------- func png.decoder.decode_other_chunk
static wuffs_base__status
wuffs_png__decoder__decode_other_chunk(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src,
bool a_framy) {
wuffs_base__status status = wuffs_base__make_status(NULL);
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_other_chunk[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if ((self->private_impl.f_chunk_type == 1163152464) && ! a_framy) {
if (self->private_impl.f_seen_plte) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
} else if (self->private_impl.f_color_type == 3) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_png__decoder__decode_plte(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
} else if ((self->private_impl.f_color_type == 2) || (self->private_impl.f_color_type == 6)) {
} else {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_seen_plte = true;
} else if ((self->private_impl.f_chunk_type & 32) == 0) {
if (self->private_impl.f_chunk_type != 1413563465) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
}
if (self->private_impl.f_chunk_type == 1716082789) {
if (self->private_impl.f_report_metadata_exif) {
if (self->private_impl.f_seen_exif) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
status = wuffs_png__decoder__decode_exif(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
self->private_impl.f_seen_exif = true;
}
} else if ((self->private_impl.f_chunk_type == 1951945833) || (self->private_impl.f_chunk_type == 1951942004) || (self->private_impl.f_chunk_type == 1951945850)) {
if (self->private_impl.f_report_metadata_kvp) {
self->private_impl.f_metadata_flavor = 4;
self->private_impl.f_metadata_fourcc = 1263947851;
self->private_impl.f_metadata_x = 0;
self->private_impl.f_metadata_y = 0;
self->private_impl.f_metadata_z = 0;
}
} else if ( ! a_framy) {
if (self->private_impl.f_chunk_type == 1280598881) {
if (self->private_impl.f_seen_actl) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
status = wuffs_png__decoder__decode_actl(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
self->private_impl.f_seen_actl = true;
} else if (self->private_impl.f_chunk_type == 1297238115) {
if (self->private_impl.f_report_metadata_chrm) {
if (self->private_impl.f_seen_chrm) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
status = wuffs_png__decoder__decode_chrm(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
self->private_impl.f_seen_chrm = true;
}
} else if (self->private_impl.f_chunk_type == 1280598886) {
if (self->private_impl.f_seen_fctl) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
status = wuffs_png__decoder__decode_fctl(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
self->private_impl.f_seen_fctl = true;
} else if (self->private_impl.f_chunk_type == 1095582055) {
if (self->private_impl.f_report_metadata_gama) {
if (self->private_impl.f_seen_gama) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
status = wuffs_png__decoder__decode_gama(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
self->private_impl.f_seen_gama = true;
}
} else if (self->private_impl.f_chunk_type == 1346585449) {
if (self->private_impl.f_report_metadata_iccp) {
if (self->private_impl.f_seen_iccp) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
status = wuffs_png__decoder__decode_iccp(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
self->private_impl.f_seen_iccp = true;
}
} else if (self->private_impl.f_chunk_type == 1111970419) {
if (self->private_impl.f_report_metadata_srgb) {
if (self->private_impl.f_seen_srgb) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
status = wuffs_png__decoder__decode_srgb(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
self->private_impl.f_seen_srgb = true;
}
} else if (self->private_impl.f_chunk_type == 1397641844) {
if (self->private_impl.f_seen_trns || (self->private_impl.f_color_type > 3) || ((self->private_impl.f_color_type == 3) && ! self->private_impl.f_seen_plte)) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
status = wuffs_png__decoder__decode_trns(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
self->private_impl.f_seen_trns = true;
}
}
if (self->private_impl.f_metadata_fourcc == 0) {
self->private_data.s_decode_other_chunk[0].scratch = self->private_impl.f_chunk_length;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
if (self->private_data.s_decode_other_chunk[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_other_chunk[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_other_chunk[0].scratch;
}
goto ok;
ok:
self->private_impl.p_decode_other_chunk[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_other_chunk[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func png.decoder.decode_actl
static wuffs_base__status
wuffs_png__decoder__decode_actl(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_actl[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_chunk_length != 8) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
} else if (self->private_impl.f_interlace_pass > 0) {
status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
goto exit;
}
self->private_impl.f_chunk_length = 0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint32_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_actl[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_actl[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
if (num_bits_0 == 24) {
t_0 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0));
}
}
self->private_impl.f_num_animation_frames_value = t_0;
}
if (self->private_impl.f_num_animation_frames_value == 0) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
uint32_t t_1;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_actl[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_actl[0].scratch;
uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
if (num_bits_1 == 24) {
t_1 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_1 += 8;
*scratch |= ((uint64_t)(num_bits_1));
}
}
self->private_impl.f_num_animation_loops_value = t_1;
}
goto ok;
ok:
self->private_impl.p_decode_actl[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_actl[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func png.decoder.decode_chrm
static wuffs_base__status
wuffs_png__decoder__decode_chrm(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint64_t v_u = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_chrm[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_chunk_length != 32) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_length = 0;
self->private_impl.f_metadata_flavor = 5;
self->private_impl.f_metadata_fourcc = 1128813133;
self->private_impl.f_metadata_x = 0;
self->private_impl.f_metadata_y = 0;
self->private_impl.f_metadata_z = 0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint64_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_0 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
iop_a_src += 4;
} else {
self->private_data.s_decode_chrm[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
if (num_bits_0 == 24) {
t_0 = ((uint64_t)(*scratch >> 32));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0));
}
}
v_u = t_0;
}
self->private_impl.f_metadata_x |= ((16777215 & v_u) << 0);
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
uint64_t t_1;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_1 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
iop_a_src += 4;
} else {
self->private_data.s_decode_chrm[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
if (num_bits_1 == 24) {
t_1 = ((uint64_t)(*scratch >> 32));
break;
}
num_bits_1 += 8;
*scratch |= ((uint64_t)(num_bits_1));
}
}
v_u = t_1;
}
self->private_impl.f_metadata_x |= ((16777215 & v_u) << 24);
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
uint64_t t_2;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_2 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
iop_a_src += 4;
} else {
self->private_data.s_decode_chrm[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
if (num_bits_2 == 24) {
t_2 = ((uint64_t)(*scratch >> 32));
break;
}
num_bits_2 += 8;
*scratch |= ((uint64_t)(num_bits_2));
}
}
v_u = t_2;
}
self->private_impl.f_metadata_x |= ((uint64_t)((16777215 & v_u) << 48));
self->private_impl.f_metadata_y |= ((16777215 & v_u) >> 16);
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
uint64_t t_3;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_3 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
iop_a_src += 4;
} else {
self->private_data.s_decode_chrm[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
if (num_bits_3 == 24) {
t_3 = ((uint64_t)(*scratch >> 32));
break;
}
num_bits_3 += 8;
*scratch |= ((uint64_t)(num_bits_3));
}
}
v_u = t_3;
}
self->private_impl.f_metadata_y |= ((16777215 & v_u) << 8);
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
uint64_t t_4;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_4 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
iop_a_src += 4;
} else {
self->private_data.s_decode_chrm[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
if (num_bits_4 == 24) {
t_4 = ((uint64_t)(*scratch >> 32));
break;
}
num_bits_4 += 8;
*scratch |= ((uint64_t)(num_bits_4));
}
}
v_u = t_4;
}
self->private_impl.f_metadata_y |= ((16777215 & v_u) << 32);
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
uint64_t t_5;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_5 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
iop_a_src += 4;
} else {
self->private_data.s_decode_chrm[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
if (num_bits_5 == 24) {
t_5 = ((uint64_t)(*scratch >> 32));
break;
}
num_bits_5 += 8;
*scratch |= ((uint64_t)(num_bits_5));
}
}
v_u = t_5;
}
self->private_impl.f_metadata_y |= ((uint64_t)((16777215 & v_u) << 56));
self->private_impl.f_metadata_z |= ((16777215 & v_u) >> 8);
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
uint64_t t_6;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_6 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
iop_a_src += 4;
} else {
self->private_data.s_decode_chrm[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6);
if (num_bits_6 == 24) {
t_6 = ((uint64_t)(*scratch >> 32));
break;
}
num_bits_6 += 8;
*scratch |= ((uint64_t)(num_bits_6));
}
}
v_u = t_6;
}
self->private_impl.f_metadata_z |= ((16777215 & v_u) << 16);
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
uint64_t t_7;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_7 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
iop_a_src += 4;
} else {
self->private_data.s_decode_chrm[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch;
uint32_t num_bits_7 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_7);
if (num_bits_7 == 24) {
t_7 = ((uint64_t)(*scratch >> 32));
break;
}
num_bits_7 += 8;
*scratch |= ((uint64_t)(num_bits_7));
}
}
v_u = t_7;
}
self->private_impl.f_metadata_z |= ((16777215 & v_u) << 40);
goto ok;
ok:
self->private_impl.p_decode_chrm[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_chrm[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func png.decoder.decode_exif
static wuffs_base__status
wuffs_png__decoder__decode_exif(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
if (self->private_impl.f_chunk_length < 4) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_metadata_flavor = 3;
self->private_impl.f_metadata_fourcc = 1163413830;
self->private_impl.f_metadata_x = 0;
self->private_impl.f_metadata_y = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
self->private_impl.f_metadata_z = wuffs_base__u64__sat_add(self->private_impl.f_metadata_y, ((uint64_t)(self->private_impl.f_chunk_length)));
self->private_impl.f_chunk_length = 0;
goto ok;
ok:
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func png.decoder.decode_fctl
static wuffs_base__status
wuffs_png__decoder__decode_fctl(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_x0 = 0;
uint32_t v_y0 = 0;
uint32_t v_x1 = 0;
uint32_t v_y1 = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_fctl[0];
if (coro_susp_point) {
v_x0 = self->private_data.s_decode_fctl[0].v_x0;
v_x1 = self->private_data.s_decode_fctl[0].v_x1;
v_y1 = self->private_data.s_decode_fctl[0].v_y1;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_chunk_length != 26) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_length = 0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint32_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_fctl[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
if (num_bits_0 == 24) {
t_0 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0));
}
}
v_x0 = t_0;
}
if (v_x0 != self->private_impl.f_next_animation_seq_num) {
status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
goto exit;
} else if (self->private_impl.f_next_animation_seq_num >= 4294967295) {
status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
goto exit;
}
self->private_impl.f_next_animation_seq_num += 1;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
uint32_t t_1;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_fctl[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
if (num_bits_1 == 24) {
t_1 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_1 += 8;
*scratch |= ((uint64_t)(num_bits_1));
}
}
v_x1 = t_1;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
uint32_t t_2;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_fctl[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
if (num_bits_2 == 24) {
t_2 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_2 += 8;
*scratch |= ((uint64_t)(num_bits_2));
}
}
v_y1 = t_2;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
uint32_t t_3;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_fctl[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
if (num_bits_3 == 24) {
t_3 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_3 += 8;
*scratch |= ((uint64_t)(num_bits_3));
}
}
v_x0 = t_3;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
uint32_t t_4;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_4 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_fctl[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4);
if (num_bits_4 == 24) {
t_4 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_4 += 8;
*scratch |= ((uint64_t)(num_bits_4));
}
}
v_y0 = t_4;
}
v_x1 += v_x0;
v_y1 += v_y0;
if ((v_x0 >= v_x1) ||
(v_x0 > self->private_impl.f_width) ||
(v_x1 > self->private_impl.f_width) ||
(v_y0 >= v_y1) ||
(v_y0 > self->private_impl.f_height) ||
(v_y1 > self->private_impl.f_height)) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_frame_rect_x0 = v_x0;
self->private_impl.f_frame_rect_y0 = v_y0;
self->private_impl.f_frame_rect_x1 = v_x1;
self->private_impl.f_frame_rect_y1 = v_y1;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
uint32_t t_5;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_5 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_fctl[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
if (num_bits_5 == 8) {
t_5 = ((uint32_t)(*scratch >> 48));
break;
}
num_bits_5 += 8;
*scratch |= ((uint64_t)(num_bits_5));
}
}
v_x0 = t_5;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
uint32_t t_6;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_6 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_fctl[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch;
uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6);
if (num_bits_6 == 8) {
t_6 = ((uint32_t)(*scratch >> 48));
break;
}
num_bits_6 += 8;
*scratch |= ((uint64_t)(num_bits_6));
}
}
v_x1 = t_6;
}
if (v_x1 <= 0) {
self->private_impl.f_frame_duration = (((uint64_t)(v_x0)) * 7056000);
} else {
self->private_impl.f_frame_duration = ((((uint64_t)(v_x0)) * 705600000) / ((uint64_t)(v_x1)));
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint32_t t_7 = *iop_a_src++;
v_x0 = t_7;
}
if (v_x0 == 0) {
self->private_impl.f_frame_disposal = 0;
} else if (v_x0 == 1) {
self->private_impl.f_frame_disposal = 1;
} else if (v_x0 == 2) {
self->private_impl.f_frame_disposal = 2;
} else {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint32_t t_8 = *iop_a_src++;
v_x0 = t_8;
}
if (v_x0 == 0) {
self->private_impl.f_frame_overwrite_instead_of_blend = true;
} else if (v_x0 == 1) {
self->private_impl.f_frame_overwrite_instead_of_blend = false;
} else {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
if (self->private_impl.f_num_decoded_frame_configs_value == 0) {
self->private_impl.f_first_rect_x0 = self->private_impl.f_frame_rect_x0;
self->private_impl.f_first_rect_y0 = self->private_impl.f_frame_rect_y0;
self->private_impl.f_first_rect_x1 = self->private_impl.f_frame_rect_x1;
self->private_impl.f_first_rect_y1 = self->private_impl.f_frame_rect_y1;
self->private_impl.f_first_duration = self->private_impl.f_frame_duration;
self->private_impl.f_first_disposal = self->private_impl.f_frame_disposal;
self->private_impl.f_first_overwrite_instead_of_blend = self->private_impl.f_frame_overwrite_instead_of_blend;
}
goto ok;
ok:
self->private_impl.p_decode_fctl[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_fctl[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_decode_fctl[0].v_x0 = v_x0;
self->private_data.s_decode_fctl[0].v_x1 = v_x1;
self->private_data.s_decode_fctl[0].v_y1 = v_y1;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func png.decoder.decode_gama
static wuffs_base__status
wuffs_png__decoder__decode_gama(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_gama[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_chunk_length != 4) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_length = 0;
self->private_impl.f_metadata_flavor = 5;
self->private_impl.f_metadata_fourcc = 1195461953;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint64_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_0 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src)));
iop_a_src += 4;
} else {
self->private_data.s_decode_gama[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_gama[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
if (num_bits_0 == 24) {
t_0 = ((uint64_t)(*scratch >> 32));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0));
}
}
self->private_impl.f_metadata_x = t_0;
}
self->private_impl.f_metadata_y = 0;
self->private_impl.f_metadata_z = 0;
goto ok;
ok:
self->private_impl.p_decode_gama[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_gama[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func png.decoder.decode_iccp
static wuffs_base__status
wuffs_png__decoder__decode_iccp(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_c = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_iccp[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
while (true) {
if (self->private_impl.f_chunk_length <= 0) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_length -= 1;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
v_c = t_0;
}
if (v_c == 0) {
goto label__0__break;
}
}
label__0__break:;
if (self->private_impl.f_chunk_length <= 0) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_length -= 1;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_1 = *iop_a_src++;
v_c = t_1;
}
if (v_c != 0) {
status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
goto exit;
}
self->private_impl.f_metadata_is_zlib_compressed = true;
self->private_impl.f_metadata_flavor = 4;
self->private_impl.f_metadata_fourcc = 1229144912;
self->private_impl.f_metadata_x = 0;
self->private_impl.f_metadata_y = 0;
self->private_impl.f_metadata_z = 0;
goto ok;
ok:
self->private_impl.p_decode_iccp[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_iccp[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func png.decoder.decode_plte
static wuffs_base__status
wuffs_png__decoder__decode_plte(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_num_entries = 0;
uint32_t v_i = 0;
uint32_t v_argb = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_plte[0];
if (coro_susp_point) {
v_num_entries = self->private_data.s_decode_plte[0].v_num_entries;
v_i = self->private_data.s_decode_plte[0].v_i;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if ((self->private_impl.f_chunk_length > 768) || ((self->private_impl.f_chunk_length % 3) != 0)) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
v_num_entries = (((uint32_t)(self->private_impl.f_chunk_length)) / 3);
self->private_impl.f_chunk_length = 0;
while (v_i < v_num_entries) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint32_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
t_0 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src)));
iop_a_src += 3;
} else {
self->private_data.s_decode_plte[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_plte[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
if (num_bits_0 == 16) {
t_0 = ((uint32_t)(*scratch >> 40));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0));
}
}
v_argb = t_0;
}
v_argb |= 4278190080;
self->private_data.f_src_palette[((4 * v_i) + 0)] = ((uint8_t)(((v_argb >> 0) & 255)));
self->private_data.f_src_palette[((4 * v_i) + 1)] = ((uint8_t)(((v_argb >> 8) & 255)));
self->private_data.f_src_palette[((4 * v_i) + 2)] = ((uint8_t)(((v_argb >> 16) & 255)));
self->private_data.f_src_palette[((4 * v_i) + 3)] = ((uint8_t)(((v_argb >> 24) & 255)));
v_i += 1;
}
while (v_i < 256) {
self->private_data.f_src_palette[((4 * v_i) + 0)] = 0;
self->private_data.f_src_palette[((4 * v_i) + 1)] = 0;
self->private_data.f_src_palette[((4 * v_i) + 2)] = 0;
self->private_data.f_src_palette[((4 * v_i) + 3)] = 255;
v_i += 1;
}
goto ok;
ok:
self->private_impl.p_decode_plte[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_plte[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_decode_plte[0].v_num_entries = v_num_entries;
self->private_data.s_decode_plte[0].v_i = v_i;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func png.decoder.decode_srgb
static wuffs_base__status
wuffs_png__decoder__decode_srgb(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_srgb[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_chunk_length != 1) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_length = 0;
self->private_impl.f_metadata_flavor = 5;
self->private_impl.f_metadata_fourcc = 1397901122;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t t_0 = *iop_a_src++;
self->private_impl.f_metadata_x = t_0;
}
self->private_impl.f_metadata_y = 0;
self->private_impl.f_metadata_z = 0;
goto ok;
ok:
self->private_impl.p_decode_srgb[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_srgb[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func png.decoder.decode_trns
static wuffs_base__status
wuffs_png__decoder__decode_trns(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_i = 0;
uint32_t v_n = 0;
uint64_t v_u = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_trns[0];
if (coro_susp_point) {
v_i = self->private_data.s_decode_trns[0].v_i;
v_n = self->private_data.s_decode_trns[0].v_n;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_color_type == 0) {
self->private_impl.choosy_filter_and_swizzle = (
&wuffs_png__decoder__filter_and_swizzle_tricky);
if (self->private_impl.f_depth <= 8) {
self->private_impl.f_dst_pixfmt = 2164295816;
self->private_impl.f_src_pixfmt = 2164295816;
} else {
self->private_impl.f_dst_pixfmt = 2164308923;
self->private_impl.f_src_pixfmt = 2164308923;
}
if (self->private_impl.f_chunk_length != 2) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_length = 0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint64_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_0 = ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_trns[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_trns[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
if (num_bits_0 == 8) {
t_0 = ((uint64_t)(*scratch >> 48));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0));
}
}
v_u = t_0;
}
if (self->private_impl.f_depth <= 1) {
self->private_impl.f_remap_transparency = (((v_u & 1) * 16777215) | 4278190080);
} else if (self->private_impl.f_depth <= 2) {
self->private_impl.f_remap_transparency = (((v_u & 3) * 5592405) | 4278190080);
} else if (self->private_impl.f_depth <= 4) {
self->private_impl.f_remap_transparency = (((v_u & 15) * 1118481) | 4278190080);
} else if (self->private_impl.f_depth <= 8) {
self->private_impl.f_remap_transparency = (((v_u & 255) * 65793) | 4278190080);
} else {
self->private_impl.f_remap_transparency = ((v_u * 4295032833) | 18446462598732840960u);
}
} else if (self->private_impl.f_color_type == 2) {
self->private_impl.choosy_filter_and_swizzle = (
&wuffs_png__decoder__filter_and_swizzle_tricky);
if (self->private_impl.f_depth <= 8) {
self->private_impl.f_dst_pixfmt = 2164295816;
self->private_impl.f_src_pixfmt = 2164295816;
} else {
self->private_impl.f_dst_pixfmt = 2164308923;
self->private_impl.f_src_pixfmt = 2164308923;
}
if (self->private_impl.f_chunk_length != 6) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_length = 0;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
uint64_t t_1;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 6)) {
t_1 = ((uint64_t)(wuffs_base__peek_u48be__no_bounds_check(iop_a_src)));
iop_a_src += 6;
} else {
self->private_data.s_decode_trns[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_trns[0].scratch;
uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
if (num_bits_1 == 40) {
t_1 = ((uint64_t)(*scratch >> 16));
break;
}
num_bits_1 += 8;
*scratch |= ((uint64_t)(num_bits_1));
}
}
v_u = t_1;
}
if (self->private_impl.f_depth <= 8) {
self->private_impl.f_remap_transparency = ((255 & (v_u >> 0)) |
(65280 & (v_u >> 8)) |
(16711680 & (v_u >> 16)) |
4278190080);
} else {
self->private_impl.f_remap_transparency = (v_u | 18446462598732840960u);
}
} else if (self->private_impl.f_color_type == 3) {
self->private_impl.f_dst_pixfmt = 2164523016;
self->private_impl.f_src_pixfmt = 2164523016;
if (self->private_impl.f_chunk_length > 256) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
v_n = ((uint32_t)(self->private_impl.f_chunk_length));
self->private_impl.f_chunk_length = 0;
while (v_i < v_n) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_2 = *iop_a_src++;
self->private_data.f_src_palette[((4 * v_i) + 3)] = t_2;
}
v_i += 1;
}
} else {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
goto ok;
ok:
self->private_impl.p_decode_trns[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_trns[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_data.s_decode_trns[0].v_i = v_i;
self->private_data.s_decode_trns[0].v_n = v_n;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func png.decoder.decode_frame_config
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_png__decoder__decode_frame_config(
wuffs_png__decoder* self,
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 2)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_checksum_have = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if ((self->private_impl.f_call_sequence & 16) != 0) {
status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
goto exit;
} else if (self->private_impl.f_call_sequence == 32) {
} else if (self->private_impl.f_call_sequence < 32) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_png__decoder__decode_image_config(self, NULL, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
} else if (self->private_impl.f_call_sequence == 40) {
if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
status = wuffs_base__make_status(wuffs_base__error__bad_restart);
goto exit;
}
} else if (self->private_impl.f_call_sequence == 64) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
status = wuffs_png__decoder__skip_frame(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
} else {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
}
if (self->private_impl.f_metadata_fourcc != 0) {
self->private_impl.f_call_sequence = 48;
status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
goto ok;
}
if (self->private_impl.f_num_decoded_frame_configs_value == 0) {
self->private_impl.f_frame_rect_x0 = self->private_impl.f_first_rect_x0;
self->private_impl.f_frame_rect_y0 = self->private_impl.f_first_rect_y0;
self->private_impl.f_frame_rect_x1 = self->private_impl.f_first_rect_x1;
self->private_impl.f_frame_rect_y1 = self->private_impl.f_first_rect_y1;
self->private_impl.f_frame_config_io_position = self->private_impl.f_first_config_io_position;
self->private_impl.f_frame_duration = self->private_impl.f_first_duration;
self->private_impl.f_frame_disposal = self->private_impl.f_first_disposal;
self->private_impl.f_frame_overwrite_instead_of_blend = self->private_impl.f_first_overwrite_instead_of_blend;
} else {
while (true) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
uint32_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_frame_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_frame_config[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
if (num_bits_0 == 24) {
t_0 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0));
}
}
self->private_impl.f_chunk_length = t_0;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
uint32_t t_1;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_frame_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_frame_config[0].scratch;
uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1;
if (num_bits_1 == 24) {
t_1 = ((uint32_t)(*scratch));
break;
}
num_bits_1 += 8;
*scratch |= ((uint64_t)(num_bits_1)) << 56;
}
}
self->private_impl.f_chunk_type = t_1;
}
if (self->private_impl.f_chunk_type == 1145980233) {
if (self->private_impl.f_chunk_length != 0) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
uint32_t t_2;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_frame_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_frame_config[0].scratch;
uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2;
if (num_bits_2 == 24) {
t_2 = ((uint32_t)(*scratch));
break;
}
num_bits_2 += 8;
*scratch |= ((uint64_t)(num_bits_2)) << 56;
}
}
v_checksum_have = t_2;
}
if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != 2187346606)) {
status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
goto exit;
}
self->private_impl.f_call_sequence = 96;
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
} else if (self->private_impl.f_chunk_type == 1413571686) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
} else if (self->private_impl.f_chunk_type == 1280598886) {
self->private_impl.f_frame_config_io_position = ((uint64_t)(wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) - 8));
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
status = wuffs_png__decoder__decode_fctl(self, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
self->private_data.s_decode_frame_config[0].scratch = 4;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
if (self->private_data.s_decode_frame_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_frame_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_frame_config[0].scratch;
goto label__0__break;
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
status = wuffs_png__decoder__decode_other_chunk(self, a_src, true);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
if (self->private_impl.f_metadata_fourcc != 0) {
self->private_impl.f_call_sequence = 48;
status = wuffs_base__make_status(wuffs_base__note__metadata_reported);
goto ok;
}
self->private_data.s_decode_frame_config[0].scratch = 4;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
if (self->private_data.s_decode_frame_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_frame_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_frame_config[0].scratch;
self->private_impl.f_chunk_length = 0;
}
label__0__break:;
}
if (a_dst != NULL) {
wuffs_base__frame_config__set(
a_dst,
wuffs_base__utility__make_rect_ie_u32(
self->private_impl.f_frame_rect_x0,
self->private_impl.f_frame_rect_y0,
self->private_impl.f_frame_rect_x1,
self->private_impl.f_frame_rect_y1),
((wuffs_base__flicks)(self->private_impl.f_frame_duration)),
((uint64_t)(self->private_impl.f_num_decoded_frame_configs_value)),
self->private_impl.f_frame_config_io_position,
self->private_impl.f_frame_disposal,
((self->private_impl.f_color_type <= 3) && ! self->private_impl.f_seen_trns),
self->private_impl.f_frame_overwrite_instead_of_blend,
0);
}
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frame_configs_value, 1);
self->private_impl.f_call_sequence = 64;
ok:
self->private_impl.p_decode_frame_config[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func png.decoder.skip_frame
static wuffs_base__status
wuffs_png__decoder__skip_frame(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src) {
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_seq_num = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_skip_frame[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
self->private_impl.f_chunk_type_array[0] = 0;
self->private_impl.f_chunk_type_array[1] = 0;
self->private_impl.f_chunk_type_array[2] = 0;
self->private_impl.f_chunk_type_array[3] = 0;
label__0__continue:;
while (true) {
while (((uint64_t)(io2_a_src - iop_a_src)) < 8) {
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
}
self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32)));
if (self->private_impl.f_chunk_type == 1413563465) {
if (self->private_impl.f_chunk_type_array[0] == 102) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_type_array[0] = 73;
self->private_impl.f_chunk_type_array[1] = 68;
self->private_impl.f_chunk_type_array[2] = 65;
self->private_impl.f_chunk_type_array[3] = 84;
} else if (self->private_impl.f_chunk_type == 1413571686) {
if (self->private_impl.f_chunk_type_array[0] == 73) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_type_array[0] = 102;
self->private_impl.f_chunk_type_array[1] = 100;
self->private_impl.f_chunk_type_array[2] = 65;
self->private_impl.f_chunk_type_array[3] = 84;
if (self->private_impl.f_chunk_length < 4) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_length -= 4;
iop_a_src += 8;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
uint32_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_skip_frame[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_skip_frame[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
if (num_bits_0 == 24) {
t_0 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0));
}
}
v_seq_num = t_0;
}
if (v_seq_num != self->private_impl.f_next_animation_seq_num) {
status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
goto exit;
} else if (self->private_impl.f_next_animation_seq_num >= 4294967295) {
status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
goto exit;
}
self->private_impl.f_next_animation_seq_num += 1;
self->private_data.s_skip_frame[0].scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 4);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
if (self->private_data.s_skip_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_skip_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_skip_frame[0].scratch;
self->private_impl.f_chunk_length = 0;
goto label__0__continue;
} else if (self->private_impl.f_chunk_type_array[0] != 0) {
goto label__0__break;
} else if (self->private_impl.f_chunk_type == 1280598886) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_data.s_skip_frame[0].scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 12);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
if (self->private_data.s_skip_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_skip_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_skip_frame[0].scratch;
self->private_impl.f_chunk_length = 0;
}
label__0__break:;
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1);
self->private_impl.f_call_sequence = 32;
ok:
self->private_impl.p_skip_frame[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_skip_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func png.decoder.decode_frame
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_png__decoder__decode_frame(
wuffs_png__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 3)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_seq_num = 0;
wuffs_base__status v_status = wuffs_base__make_status(NULL);
uint32_t v_pass_width = 0;
uint32_t v_pass_height = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if ((self->private_impl.f_call_sequence & 16) != 0) {
status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
goto exit;
} else if (self->private_impl.f_call_sequence >= 96) {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
} else if (self->private_impl.f_call_sequence != 64) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_png__decoder__decode_frame_config(self, NULL, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
}
while (true) {
while (((uint64_t)(io2_a_src - iop_a_src)) < 8) {
if (a_src && a_src->meta.closed) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
}
self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32)));
if (self->private_impl.f_chunk_type == 1413563465) {
self->private_impl.f_chunk_type_array[0] = 73;
self->private_impl.f_chunk_type_array[1] = 68;
self->private_impl.f_chunk_type_array[2] = 65;
self->private_impl.f_chunk_type_array[3] = 84;
iop_a_src += 8;
if ( ! self->private_impl.f_ignore_checksum) {
wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
}
goto label__0__break;
} else if (self->private_impl.f_chunk_type == 1413571686) {
self->private_impl.f_chunk_type_array[0] = 102;
self->private_impl.f_chunk_type_array[1] = 100;
self->private_impl.f_chunk_type_array[2] = 65;
self->private_impl.f_chunk_type_array[3] = 84;
if (self->private_impl.f_chunk_length < 4) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_length -= 4;
iop_a_src += 8;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
uint32_t t_0;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_frame[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_frame[0].scratch;
uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0);
if (num_bits_0 == 24) {
t_0 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_0 += 8;
*scratch |= ((uint64_t)(num_bits_0));
}
}
v_seq_num = t_0;
}
if (v_seq_num != self->private_impl.f_next_animation_seq_num) {
status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
goto exit;
} else if (self->private_impl.f_next_animation_seq_num >= 4294967295) {
status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
goto exit;
}
self->private_impl.f_next_animation_seq_num += 1;
goto label__0__break;
} else if (self->private_impl.f_chunk_type == 1280598886) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_data.s_decode_frame[0].scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 12);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
if (self->private_data.s_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_frame[0].scratch;
self->private_impl.f_chunk_length = 0;
}
label__0__break:;
if (self->private_impl.f_zlib_is_dirty) {
wuffs_base__ignore_status(wuffs_zlib__decoder__initialize(&self->private_data.f_zlib,
sizeof (wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
if (self->private_impl.f_ignore_checksum) {
wuffs_zlib__decoder__set_quirk_enabled(&self->private_data.f_zlib, 1, true);
}
}
self->private_impl.f_zlib_is_dirty = true;
v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
wuffs_base__pixel_buffer__pixel_format(a_dst),
wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt),
wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024),
a_blend);
if ( ! wuffs_base__status__is_ok(&v_status)) {
status = v_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
}
self->private_impl.f_workbuf_hist_pos_base = 0;
while (true) {
if (self->private_impl.f_chunk_type_array[0] == 73) {
v_pass_width = (16777215 & ((((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][1])) + self->private_impl.f_width) >> WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0]));
v_pass_height = (16777215 & ((((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][4])) + self->private_impl.f_height) >> WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][3]));
} else {
v_pass_width = (16777215 & ((uint32_t)(self->private_impl.f_frame_rect_x1 - self->private_impl.f_frame_rect_x0)));
v_pass_height = (16777215 & ((uint32_t)(self->private_impl.f_frame_rect_y1 - self->private_impl.f_frame_rect_y0)));
}
if ((v_pass_width > 0) && (v_pass_height > 0)) {
self->private_impl.f_pass_bytes_per_row = wuffs_png__decoder__calculate_bytes_per_row(self, v_pass_width);
self->private_impl.f_pass_workbuf_length = (((uint64_t)(v_pass_height)) * (1 + self->private_impl.f_pass_bytes_per_row));
while (true) {
{
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
wuffs_base__status t_1 = wuffs_png__decoder__decode_pass(self, a_src, a_workbuf);
v_status = t_1;
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
}
if (wuffs_base__status__is_ok(&v_status)) {
goto label__1__break;
} else if (wuffs_base__status__is_error(&v_status) || ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed))) {
if (self->private_impl.f_workbuf_wi <= ((uint64_t)(a_workbuf.len))) {
wuffs_png__decoder__filter_and_swizzle(self, a_dst, wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_workbuf_wi));
}
if (v_status.repr == wuffs_base__suspension__short_read) {
while (true) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
}
}
}
status = v_status;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
}
label__1__break:;
v_status = wuffs_png__decoder__filter_and_swizzle(self, a_dst, a_workbuf);
if ( ! wuffs_base__status__is_ok(&v_status)) {
status = v_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
}
self->private_impl.f_workbuf_hist_pos_base += self->private_impl.f_pass_workbuf_length;
}
if ((self->private_impl.f_interlace_pass == 0) || (self->private_impl.f_interlace_pass >= 7)) {
goto label__2__break;
}
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
self->private_impl.f_interlace_pass += 1;
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
}
label__2__break:;
wuffs_base__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1);
self->private_impl.f_call_sequence = 32;
ok:
self->private_impl.p_decode_frame[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func png.decoder.decode_pass
static wuffs_base__status
wuffs_png__decoder__decode_pass(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_src,
wuffs_base__slice_u8 a_workbuf) {
wuffs_base__status status = wuffs_base__make_status(NULL);
wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer();
wuffs_base__io_buffer* v_w = &u_w;
uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint64_t v_w_mark = 0;
uint64_t v_r_mark = 0;
wuffs_base__status v_zlib_status = wuffs_base__make_status(NULL);
uint32_t v_checksum_have = 0;
uint32_t v_checksum_want = 0;
uint32_t v_seq_num = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_pass[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
self->private_impl.f_workbuf_wi = 0;
label__0__continue:;
while (true) {
if ((self->private_impl.f_workbuf_wi > self->private_impl.f_pass_workbuf_length) || (self->private_impl.f_pass_workbuf_length > ((uint64_t)(a_workbuf.len)))) {
status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length);
goto exit;
}
{
wuffs_base__io_buffer* o_0_v_w = v_w;
uint8_t *o_0_iop_v_w = iop_v_w;
uint8_t *o_0_io0_v_w = io0_v_w;
uint8_t *o_0_io1_v_w = io1_v_w;
uint8_t *o_0_io2_v_w = io2_v_w;
v_w = wuffs_base__io_writer__set(
&u_w,
&iop_v_w,
&io0_v_w,
&io1_v_w,
&io2_v_w,
wuffs_base__slice_u8__subslice_ij(a_workbuf,
self->private_impl.f_workbuf_wi,
self->private_impl.f_pass_workbuf_length),
((uint64_t)(self->private_impl.f_workbuf_hist_pos_base + self->private_impl.f_workbuf_wi)));
{
const uint8_t *o_1_io2_a_src = io2_a_src;
wuffs_base__io_reader__limit(&io2_a_src, iop_a_src,
((uint64_t)(self->private_impl.f_chunk_length)));
if (a_src) {
a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
}
v_w_mark = ((uint64_t)(iop_v_w - io0_v_w));
v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
{
u_w.meta.wi = ((size_t)(iop_v_w - u_w.data.ptr));
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
wuffs_base__status t_0 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, v_w, a_src, wuffs_base__utility__empty_slice_u8());
v_zlib_status = t_0;
iop_v_w = u_w.data.ptr + u_w.meta.wi;
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
}
if ( ! self->private_impl.f_ignore_checksum) {
wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__io__since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
}
wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)((wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))) & 4294967295))));
wuffs_base__u64__sat_add_indirect(&self->private_impl.f_workbuf_wi, wuffs_base__io__count_since(v_w_mark, ((uint64_t)(iop_v_w - io0_v_w))));
io2_a_src = o_1_io2_a_src;
if (a_src) {
a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
}
}
v_w = o_0_v_w;
iop_v_w = o_0_iop_v_w;
io0_v_w = o_0_io0_v_w;
io1_v_w = o_0_io1_v_w;
io2_v_w = o_0_io2_v_w;
}
if (wuffs_base__status__is_ok(&v_zlib_status)) {
if (self->private_impl.f_chunk_length > 0) {
status = wuffs_base__make_status(wuffs_base__error__too_much_data);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
uint32_t t_1;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_pass[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch;
uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1);
if (num_bits_1 == 24) {
t_1 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_1 += 8;
*scratch |= ((uint64_t)(num_bits_1));
}
}
v_checksum_want = t_1;
}
if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_chunk_type_array[0] == 73)) {
v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__utility__empty_slice_u8());
if (v_checksum_have != v_checksum_want) {
status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
goto exit;
}
}
goto label__0__break;
} else if (v_zlib_status.repr == wuffs_base__suspension__short_write) {
if ((1 <= self->private_impl.f_interlace_pass) && (self->private_impl.f_interlace_pass <= 6)) {
goto label__0__break;
}
status = wuffs_base__make_status(wuffs_base__error__too_much_data);
goto exit;
} else if (v_zlib_status.repr != wuffs_base__suspension__short_read) {
status = v_zlib_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
} else if (self->private_impl.f_chunk_length == 0) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
uint32_t t_2;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_pass[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch;
uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2);
if (num_bits_2 == 24) {
t_2 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_2 += 8;
*scratch |= ((uint64_t)(num_bits_2));
}
}
v_checksum_want = t_2;
}
if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_chunk_type_array[0] == 73)) {
v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__utility__empty_slice_u8());
if (v_checksum_have != v_checksum_want) {
status = wuffs_base__make_status(wuffs_png__error__bad_checksum);
goto exit;
}
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
uint32_t t_3;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_pass[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch;
uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3);
if (num_bits_3 == 24) {
t_3 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_3 += 8;
*scratch |= ((uint64_t)(num_bits_3));
}
}
self->private_impl.f_chunk_length = t_3;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
uint32_t t_4;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_pass[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch;
uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
if (num_bits_4 == 24) {
t_4 = ((uint32_t)(*scratch));
break;
}
num_bits_4 += 8;
*scratch |= ((uint64_t)(num_bits_4)) << 56;
}
}
self->private_impl.f_chunk_type = t_4;
}
if (self->private_impl.f_chunk_type_array[0] == 73) {
if (self->private_impl.f_chunk_type != 1413563465) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
if ( ! self->private_impl.f_ignore_checksum) {
wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32,
sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4));
}
} else {
if ((self->private_impl.f_chunk_type != 1413571686) || (self->private_impl.f_chunk_length < 4)) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_length -= 4;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
uint32_t t_5;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_5 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_pass[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch;
uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFF));
*scratch >>= 8;
*scratch <<= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5);
if (num_bits_5 == 24) {
t_5 = ((uint32_t)(*scratch >> 32));
break;
}
num_bits_5 += 8;
*scratch |= ((uint64_t)(num_bits_5));
}
}
v_seq_num = t_5;
}
if (v_seq_num != self->private_impl.f_next_animation_seq_num) {
status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number);
goto exit;
} else if (self->private_impl.f_next_animation_seq_num >= 4294967295) {
status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file);
goto exit;
}
self->private_impl.f_next_animation_seq_num += 1;
}
goto label__0__continue;
} else if (((uint64_t)(io2_a_src - iop_a_src)) > 0) {
status = wuffs_base__make_status(wuffs_png__error__internal_error_zlib_decoder_did_not_exhaust_its_input);
goto exit;
}
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
}
label__0__break:;
if (self->private_impl.f_workbuf_wi != self->private_impl.f_pass_workbuf_length) {
status = wuffs_base__make_status(wuffs_base__error__not_enough_data);
goto exit;
} else if (0 < ((uint64_t)(a_workbuf.len))) {
if (a_workbuf.ptr[0] == 4) {
a_workbuf.ptr[0] = 1;
}
}
ok:
self->private_impl.p_decode_pass[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_pass[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
return status;
}
// -------- func png.decoder.frame_dirty_rect
WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
wuffs_png__decoder__frame_dirty_rect(
const wuffs_png__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_rect_ie_u32();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_rect_ie_u32();
}
return wuffs_base__utility__make_rect_ie_u32(
self->private_impl.f_frame_rect_x0,
self->private_impl.f_frame_rect_y0,
self->private_impl.f_frame_rect_x1,
self->private_impl.f_frame_rect_y1);
}
// -------- func png.decoder.num_animation_loops
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_png__decoder__num_animation_loops(
const wuffs_png__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
return self->private_impl.f_num_animation_loops_value;
}
// -------- func png.decoder.num_decoded_frame_configs
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_png__decoder__num_decoded_frame_configs(
const wuffs_png__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
return ((uint64_t)(self->private_impl.f_num_decoded_frame_configs_value));
}
// -------- func png.decoder.num_decoded_frames
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_png__decoder__num_decoded_frames(
const wuffs_png__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
return ((uint64_t)(self->private_impl.f_num_decoded_frames_value));
}
// -------- func png.decoder.restart_frame
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_png__decoder__restart_frame(
wuffs_png__decoder* self,
uint64_t a_index,
uint64_t a_io_position) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (self->private_impl.f_call_sequence < 32) {
return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
} else if ((a_index >= ((uint64_t)(self->private_impl.f_num_animation_frames_value))) || ((a_index == 0) && (a_io_position != self->private_impl.f_first_config_io_position))) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
self->private_impl.f_call_sequence = 40;
if (self->private_impl.f_interlace_pass >= 1) {
self->private_impl.f_interlace_pass = 1;
}
self->private_impl.f_frame_config_io_position = a_io_position;
self->private_impl.f_num_decoded_frame_configs_value = ((uint32_t)((a_index & 4294967295)));
self->private_impl.f_num_decoded_frames_value = self->private_impl.f_num_decoded_frame_configs_value;
return wuffs_base__make_status(NULL);
}
// -------- func png.decoder.set_report_metadata
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_png__decoder__set_report_metadata(
wuffs_png__decoder* self,
uint32_t a_fourcc,
bool a_report) {
if (!self) {
return wuffs_base__make_empty_struct();
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_empty_struct();
}
if (a_fourcc == 1128813133) {
self->private_impl.f_report_metadata_chrm = a_report;
} else if (a_fourcc == 1163413830) {
self->private_impl.f_report_metadata_exif = a_report;
} else if (a_fourcc == 1195461953) {
self->private_impl.f_report_metadata_gama = a_report;
} else if (a_fourcc == 1229144912) {
self->private_impl.f_report_metadata_iccp = a_report;
} else if (a_fourcc == 1263947808) {
self->private_impl.f_report_metadata_kvp = a_report;
} else if (a_fourcc == 1397901122) {
self->private_impl.f_report_metadata_srgb = a_report;
}
return wuffs_base__make_empty_struct();
}
// -------- func png.decoder.tell_me_more
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_png__decoder__tell_me_more(
wuffs_png__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 4)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_c = 0;
uint16_t v_c2 = 0;
wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer();
wuffs_base__io_buffer* v_w = &u_w;
uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint64_t v_num_written = 0;
uint64_t v_w_mark = 0;
uint64_t v_r_mark = 0;
wuffs_base__status v_zlib_status = wuffs_base__make_status(NULL);
uint8_t* iop_a_dst = NULL;
uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_dst) {
io0_a_dst = a_dst->data.ptr;
io1_a_dst = io0_a_dst + a_dst->meta.wi;
iop_a_dst = io1_a_dst;
io2_a_dst = io0_a_dst + a_dst->data.len;
if (a_dst->meta.closed) {
io2_a_dst = iop_a_dst;
}
}
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_tell_me_more[0];
if (coro_susp_point) {
v_zlib_status = self->private_data.s_tell_me_more[0].v_zlib_status;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if ((self->private_impl.f_call_sequence & 16) == 0) {
status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
goto exit;
}
if (self->private_impl.f_metadata_fourcc == 0) {
status = wuffs_base__make_status(wuffs_base__error__no_more_information);
goto exit;
}
while (true) {
if (self->private_impl.f_metadata_flavor == 3) {
while (true) {
if (wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) != self->private_impl.f_metadata_y) {
status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position);
goto exit;
} else if (a_minfo != NULL) {
wuffs_base__more_information__set(a_minfo,
self->private_impl.f_metadata_flavor,
self->private_impl.f_metadata_fourcc,
self->private_impl.f_metadata_x,
self->private_impl.f_metadata_y,
self->private_impl.f_metadata_z);
}
if (self->private_impl.f_metadata_y >= self->private_impl.f_metadata_z) {
goto label__goto_done__break;
}
self->private_impl.f_metadata_y = self->private_impl.f_metadata_z;
status = wuffs_base__make_status(wuffs_base__suspension__even_more_information);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1);
}
}
if (self->private_impl.f_metadata_is_zlib_compressed) {
if (self->private_impl.f_zlib_is_dirty) {
wuffs_base__ignore_status(wuffs_zlib__decoder__initialize(&self->private_data.f_zlib,
sizeof (wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED));
if (self->private_impl.f_ignore_checksum) {
wuffs_zlib__decoder__set_quirk_enabled(&self->private_data.f_zlib, 1, true);
}
}
self->private_impl.f_zlib_is_dirty = true;
self->private_impl.f_ztxt_hist_pos = 0;
}
label__loop__continue:;
while (true) {
if (a_minfo != NULL) {
wuffs_base__more_information__set(a_minfo,
self->private_impl.f_metadata_flavor,
self->private_impl.f_metadata_fourcc,
self->private_impl.f_metadata_x,
self->private_impl.f_metadata_y,
self->private_impl.f_metadata_z);
}
if (self->private_impl.f_metadata_flavor != 4) {
goto label__loop__break;
}
if (self->private_impl.f_metadata_is_zlib_compressed) {
if (self->private_impl.f_chunk_type == 1346585449) {
{
const uint8_t *o_0_io2_a_src = io2_a_src;
wuffs_base__io_reader__limit(&io2_a_src, iop_a_src,
((uint64_t)(self->private_impl.f_chunk_length)));
if (a_src) {
a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
}
v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
{
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
wuffs_base__status t_0 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, a_dst, a_src, wuffs_base__utility__empty_slice_u8());
v_zlib_status = t_0;
if (a_dst) {
iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
}
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
}
wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)((wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))) & 4294967295))));
io2_a_src = o_0_io2_a_src;
if (a_src) {
a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
}
}
if (wuffs_base__status__is_ok(&v_zlib_status)) {
self->private_impl.f_metadata_is_zlib_compressed = false;
goto label__loop__break;
} else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) {
status = v_zlib_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
}
status = v_zlib_status;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
} else if (self->private_impl.f_chunk_type == 1951945833) {
{
const uint8_t *o_1_io2_a_src = io2_a_src;
wuffs_base__io_reader__limit(&io2_a_src, iop_a_src,
((uint64_t)(self->private_impl.f_chunk_length)));
if (a_src) {
a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
}
v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
{
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
wuffs_base__status t_1 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, a_dst, a_src, wuffs_base__utility__empty_slice_u8());
v_zlib_status = t_1;
if (a_dst) {
iop_a_dst = a_dst->data.ptr + a_dst->meta.wi;
}
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
}
wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)((wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))) & 4294967295))));
io2_a_src = o_1_io2_a_src;
if (a_src) {
a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
}
}
if (wuffs_base__status__is_ok(&v_zlib_status)) {
self->private_impl.f_metadata_is_zlib_compressed = false;
goto label__loop__break;
} else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) {
status = v_zlib_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
}
status = v_zlib_status;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
} else if (self->private_impl.f_chunk_type == 1951945850) {
if (self->private_impl.f_ztxt_ri == self->private_impl.f_ztxt_wi) {
{
wuffs_base__io_buffer* o_2_v_w = v_w;
uint8_t *o_2_iop_v_w = iop_v_w;
uint8_t *o_2_io0_v_w = io0_v_w;
uint8_t *o_2_io1_v_w = io1_v_w;
uint8_t *o_2_io2_v_w = io2_v_w;
v_w = wuffs_base__io_writer__set(
&u_w,
&iop_v_w,
&io0_v_w,
&io1_v_w,
&io2_v_w,
wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024),
self->private_impl.f_ztxt_hist_pos);
{
const uint8_t *o_3_io2_a_src = io2_a_src;
wuffs_base__io_reader__limit(&io2_a_src, iop_a_src,
((uint64_t)(self->private_impl.f_chunk_length)));
if (a_src) {
a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
}
v_w_mark = ((uint64_t)(iop_v_w - io0_v_w));
v_r_mark = ((uint64_t)(iop_a_src - io0_a_src));
{
u_w.meta.wi = ((size_t)(iop_v_w - u_w.data.ptr));
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
wuffs_base__status t_2 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, v_w, a_src, wuffs_base__utility__empty_slice_u8());
v_zlib_status = t_2;
iop_v_w = u_w.data.ptr + u_w.meta.wi;
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
}
wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)((wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))) & 4294967295))));
v_num_written = wuffs_base__io__count_since(v_w_mark, ((uint64_t)(iop_v_w - io0_v_w)));
io2_a_src = o_3_io2_a_src;
if (a_src) {
a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr));
}
}
v_w = o_2_v_w;
iop_v_w = o_2_iop_v_w;
io0_v_w = o_2_io0_v_w;
io1_v_w = o_2_io1_v_w;
io2_v_w = o_2_io2_v_w;
}
if (v_num_written > 1024) {
status = wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_i_o);
goto exit;
}
self->private_impl.f_ztxt_ri = 0;
self->private_impl.f_ztxt_wi = ((uint32_t)(v_num_written));
wuffs_base__u64__sat_add_indirect(&self->private_impl.f_ztxt_hist_pos, v_num_written);
}
while (self->private_impl.f_ztxt_ri < self->private_impl.f_ztxt_wi) {
v_c2 = WUFFS_PNG__LATIN_1[self->private_data.f_dst_palette[self->private_impl.f_ztxt_ri]];
if (v_c2 == 0) {
status = wuffs_base__make_status(wuffs_png__error__bad_text_chunk_not_latin_1);
goto exit;
} else if (v_c2 <= 127) {
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
goto label__loop__continue;
}
self->private_impl.f_ztxt_ri += 1;
(wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(v_c2))), iop_a_dst += 1);
} else {
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
goto label__loop__continue;
}
self->private_impl.f_ztxt_ri += 1;
(wuffs_base__poke_u16le__no_bounds_check(iop_a_dst, v_c2), iop_a_dst += 2);
}
}
if (wuffs_base__status__is_ok(&v_zlib_status)) {
self->private_impl.f_metadata_is_zlib_compressed = false;
goto label__loop__break;
} else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) {
status = v_zlib_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
} else if (v_zlib_status.repr != wuffs_base__suspension__short_write) {
status = v_zlib_status;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
}
} else {
status = wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_chunk_type);
goto exit;
}
} else if ((self->private_impl.f_chunk_type == 1951945833) && (self->private_impl.f_metadata_fourcc == 1263947862)) {
while (true) {
if (self->private_impl.f_chunk_length <= 0) {
goto label__loop__break;
} else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
goto label__loop__continue;
} else if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
goto label__loop__continue;
}
self->private_impl.f_chunk_length -= 1;
v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
iop_a_src += 1;
(wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_c), iop_a_dst += 1);
}
} else {
while (true) {
if (self->private_impl.f_chunk_length <= 0) {
if (self->private_impl.f_metadata_fourcc == 1263947851) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
goto label__loop__break;
} else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
goto label__loop__continue;
}
v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
if (v_c == 0) {
self->private_impl.f_chunk_length -= 1;
iop_a_src += 1;
goto label__loop__break;
}
v_c2 = WUFFS_PNG__LATIN_1[v_c];
if (v_c2 == 0) {
status = wuffs_base__make_status(wuffs_png__error__bad_text_chunk_not_latin_1);
goto exit;
} else if (v_c2 <= 127) {
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
goto label__loop__continue;
}
self->private_impl.f_chunk_length -= 1;
iop_a_src += 1;
(wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(v_c2))), iop_a_dst += 1);
} else {
if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1) {
status = wuffs_base__make_status(wuffs_base__suspension__short_write);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11);
goto label__loop__continue;
}
self->private_impl.f_chunk_length -= 1;
iop_a_src += 1;
(wuffs_base__poke_u16le__no_bounds_check(iop_a_dst, v_c2), iop_a_dst += 2);
}
}
}
}
label__loop__break:;
if (self->private_impl.f_metadata_fourcc == 1263947851) {
self->private_impl.f_metadata_fourcc = 1263947862;
if (self->private_impl.f_chunk_type == 1951945833) {
if (self->private_impl.f_chunk_length <= 1) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_length -= 2;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_3 = *iop_a_src++;
v_c = t_3;
}
if (v_c == 0) {
self->private_impl.f_metadata_is_zlib_compressed = false;
} else if (v_c == 1) {
self->private_impl.f_metadata_is_zlib_compressed = true;
} else {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_4 = *iop_a_src++;
v_c = t_4;
}
if ((v_c != 0) && self->private_impl.f_metadata_is_zlib_compressed) {
status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
goto exit;
}
self->private_impl.f_metadata_fourcc -= 2;
while (self->private_impl.f_metadata_fourcc != 1263947862) {
self->private_impl.f_metadata_fourcc += 1;
while (true) {
if (self->private_impl.f_chunk_length <= 0) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_length -= 1;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_5 = *iop_a_src++;
v_c = t_5;
}
if (v_c == 0) {
goto label__0__break;
}
}
label__0__break:;
}
} else if (self->private_impl.f_chunk_type == 1951945850) {
if (self->private_impl.f_chunk_length <= 0) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_impl.f_chunk_length -= 1;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_6 = *iop_a_src++;
v_c = t_6;
}
if (v_c != 0) {
status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method);
goto exit;
}
self->private_impl.f_metadata_is_zlib_compressed = true;
}
self->private_impl.f_call_sequence &= 239;
status = wuffs_base__make_status(NULL);
goto ok;
}
goto label__goto_done__break;
}
label__goto_done__break:;
if (self->private_impl.f_chunk_length != 0) {
status = wuffs_base__make_status(wuffs_png__error__bad_chunk);
goto exit;
}
self->private_data.s_tell_me_more[0].scratch = 4;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
if (self->private_data.s_tell_me_more[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_tell_me_more[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_tell_me_more[0].scratch;
self->private_impl.f_metadata_flavor = 0;
self->private_impl.f_metadata_fourcc = 0;
self->private_impl.f_metadata_x = 0;
self->private_impl.f_metadata_y = 0;
self->private_impl.f_metadata_z = 0;
self->private_impl.f_call_sequence &= 239;
status = wuffs_base__make_status(NULL);
goto ok;
ok:
self->private_impl.p_tell_me_more[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0;
self->private_data.s_tell_me_more[0].v_zlib_status = v_zlib_status;
goto exit;
exit:
if (a_dst) {
a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr));
}
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func png.decoder.workbuf_len
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_png__decoder__workbuf_len(
const wuffs_png__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
return wuffs_base__utility__make_range_ii_u64(self->private_impl.f_overall_workbuf_length, self->private_impl.f_overall_workbuf_length);
}
// -------- func png.decoder.filter_and_swizzle
static wuffs_base__status
wuffs_png__decoder__filter_and_swizzle(
wuffs_png__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__slice_u8 a_workbuf) {
return (*self->private_impl.choosy_filter_and_swizzle)(self, a_dst, a_workbuf);
}
static wuffs_base__status
wuffs_png__decoder__filter_and_swizzle__choosy_default(
wuffs_png__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__slice_u8 a_workbuf) {
wuffs_base__pixel_format v_dst_pixfmt = {0};
uint32_t v_dst_bits_per_pixel = 0;
uint64_t v_dst_bytes_per_pixel = 0;
uint64_t v_dst_bytes_per_row0 = 0;
uint64_t v_dst_bytes_per_row1 = 0;
wuffs_base__slice_u8 v_dst_palette = {0};
wuffs_base__table_u8 v_tab = {0};
uint32_t v_y = 0;
wuffs_base__slice_u8 v_dst = {0};
uint8_t v_filter = 0;
wuffs_base__slice_u8 v_curr_row = {0};
wuffs_base__slice_u8 v_prev_row = {0};
v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
if ((v_dst_bits_per_pixel & 7) != 0) {
return wuffs_base__make_status(wuffs_base__error__unsupported_option);
}
v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8)));
v_dst_bytes_per_row0 = (((uint64_t)(self->private_impl.f_frame_rect_x0)) * v_dst_bytes_per_pixel);
v_dst_bytes_per_row1 = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * v_dst_bytes_per_pixel);
v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0);
if (v_dst_bytes_per_row1 < ((uint64_t)(v_tab.width))) {
v_tab = wuffs_base__table_u8__subtable_ij(v_tab,
0,
0,
v_dst_bytes_per_row1,
((uint64_t)(v_tab.height)));
}
if (v_dst_bytes_per_row0 < ((uint64_t)(v_tab.width))) {
v_tab = wuffs_base__table_u8__subtable_ij(v_tab,
v_dst_bytes_per_row0,
0,
((uint64_t)(v_tab.width)),
((uint64_t)(v_tab.height)));
} else {
v_tab = wuffs_base__table_u8__subtable_ij(v_tab,
0,
0,
0,
0);
}
v_y = self->private_impl.f_frame_rect_y0;
while (v_y < self->private_impl.f_frame_rect_y1) {
v_dst = wuffs_base__table_u8__row_u32(v_tab, v_y);
if (1 > ((uint64_t)(a_workbuf.len))) {
return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
}
v_filter = a_workbuf.ptr[0];
a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, 1);
if (self->private_impl.f_pass_bytes_per_row > ((uint64_t)(a_workbuf.len))) {
return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
}
v_curr_row = wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_pass_bytes_per_row);
a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, self->private_impl.f_pass_bytes_per_row);
if (v_filter == 0) {
} else if (v_filter == 1) {
wuffs_png__decoder__filter_1(self, v_curr_row);
} else if (v_filter == 2) {
wuffs_png__decoder__filter_2(self, v_curr_row, v_prev_row);
} else if (v_filter == 3) {
wuffs_png__decoder__filter_3(self, v_curr_row, v_prev_row);
} else if (v_filter == 4) {
wuffs_png__decoder__filter_4(self, v_curr_row, v_prev_row);
} else {
return wuffs_base__make_status(wuffs_png__error__bad_filter);
}
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, v_curr_row);
v_prev_row = v_curr_row;
v_y += 1;
}
return wuffs_base__make_status(NULL);
}
// -------- func png.decoder.filter_and_swizzle_tricky
static wuffs_base__status
wuffs_png__decoder__filter_and_swizzle_tricky(
wuffs_png__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__slice_u8 a_workbuf) {
wuffs_base__pixel_format v_dst_pixfmt = {0};
uint32_t v_dst_bits_per_pixel = 0;
uint64_t v_dst_bytes_per_pixel = 0;
uint64_t v_dst_bytes_per_row1 = 0;
wuffs_base__slice_u8 v_dst_palette = {0};
wuffs_base__table_u8 v_tab = {0};
uint64_t v_src_bytes_per_pixel = 0;
uint32_t v_x = 0;
uint32_t v_y = 0;
uint64_t v_i = 0;
wuffs_base__slice_u8 v_dst = {0};
uint8_t v_filter = 0;
wuffs_base__slice_u8 v_s = {0};
wuffs_base__slice_u8 v_curr_row = {0};
wuffs_base__slice_u8 v_prev_row = {0};
uint8_t v_bits_unpacked[8] = {0};
uint8_t v_bits_packed = 0;
uint8_t v_packs_remaining = 0;
uint8_t v_multiplier = 0;
uint8_t v_shift = 0;
v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
if ((v_dst_bits_per_pixel & 7) != 0) {
return wuffs_base__make_status(wuffs_base__error__unsupported_option);
}
v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8)));
v_dst_bytes_per_row1 = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * v_dst_bytes_per_pixel);
v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0);
v_src_bytes_per_pixel = 1;
if (self->private_impl.f_depth >= 8) {
v_src_bytes_per_pixel = (((uint64_t)(WUFFS_PNG__NUM_CHANNELS[self->private_impl.f_color_type])) * ((uint64_t)((self->private_impl.f_depth >> 3))));
}
if (self->private_impl.f_chunk_type_array[0] == 73) {
v_y = ((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][5]));
} else {
v_y = self->private_impl.f_frame_rect_y0;
}
while (v_y < self->private_impl.f_frame_rect_y1) {
v_dst = wuffs_base__table_u8__row_u32(v_tab, v_y);
if (v_dst_bytes_per_row1 < ((uint64_t)(v_dst.len))) {
v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row1);
}
if (1 > ((uint64_t)(a_workbuf.len))) {
return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
}
v_filter = a_workbuf.ptr[0];
a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, 1);
if (self->private_impl.f_pass_bytes_per_row > ((uint64_t)(a_workbuf.len))) {
return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length);
}
v_curr_row = wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_pass_bytes_per_row);
a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, self->private_impl.f_pass_bytes_per_row);
if (v_filter == 0) {
} else if (v_filter == 1) {
wuffs_png__decoder__filter_1(self, v_curr_row);
} else if (v_filter == 2) {
wuffs_png__decoder__filter_2(self, v_curr_row, v_prev_row);
} else if (v_filter == 3) {
wuffs_png__decoder__filter_3(self, v_curr_row, v_prev_row);
} else if (v_filter == 4) {
wuffs_png__decoder__filter_4(self, v_curr_row, v_prev_row);
} else {
return wuffs_base__make_status(wuffs_png__error__bad_filter);
}
v_s = v_curr_row;
if (self->private_impl.f_chunk_type_array[0] == 73) {
v_x = ((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][2]));
} else {
v_x = self->private_impl.f_frame_rect_x0;
}
if (self->private_impl.f_depth == 8) {
while (v_x < self->private_impl.f_frame_rect_x1) {
v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel);
if (v_i <= ((uint64_t)(v_dst.len))) {
if (self->private_impl.f_color_type == 4) {
if (2 <= ((uint64_t)(v_s.len))) {
v_bits_unpacked[0] = v_s.ptr[0];
v_bits_unpacked[1] = v_s.ptr[0];
v_bits_unpacked[2] = v_s.ptr[0];
v_bits_unpacked[3] = v_s.ptr[1];
v_s = wuffs_base__slice_u8__subslice_i(v_s, 2);
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
}
} else if (((uint32_t)((self->private_impl.f_remap_transparency & 4294967295))) != 0) {
if (self->private_impl.f_color_type == 0) {
if (1 <= ((uint64_t)(v_s.len))) {
v_bits_unpacked[0] = v_s.ptr[0];
v_bits_unpacked[1] = v_s.ptr[0];
v_bits_unpacked[2] = v_s.ptr[0];
v_bits_unpacked[3] = 255;
v_s = wuffs_base__slice_u8__subslice_i(v_s, 1);
if (((uint32_t)((self->private_impl.f_remap_transparency & 4294967295))) == ((((uint32_t)(v_bits_unpacked[0])) << 0) |
(((uint32_t)(v_bits_unpacked[1])) << 8) |
(((uint32_t)(v_bits_unpacked[2])) << 16) |
(((uint32_t)(v_bits_unpacked[3])) << 24))) {
v_bits_unpacked[0] = 0;
v_bits_unpacked[1] = 0;
v_bits_unpacked[2] = 0;
v_bits_unpacked[3] = 0;
}
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
}
} else {
if (3 <= ((uint64_t)(v_s.len))) {
v_bits_unpacked[0] = v_s.ptr[2];
v_bits_unpacked[1] = v_s.ptr[1];
v_bits_unpacked[2] = v_s.ptr[0];
v_bits_unpacked[3] = 255;
v_s = wuffs_base__slice_u8__subslice_i(v_s, 3);
if (((uint32_t)((self->private_impl.f_remap_transparency & 4294967295))) == ((((uint32_t)(v_bits_unpacked[0])) << 0) |
(((uint32_t)(v_bits_unpacked[1])) << 8) |
(((uint32_t)(v_bits_unpacked[2])) << 16) |
(((uint32_t)(v_bits_unpacked[3])) << 24))) {
v_bits_unpacked[0] = 0;
v_bits_unpacked[1] = 0;
v_bits_unpacked[2] = 0;
v_bits_unpacked[3] = 0;
}
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
}
}
} else if (v_src_bytes_per_pixel <= ((uint64_t)(v_s.len))) {
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__slice_u8__subslice_j(v_s, v_src_bytes_per_pixel));
v_s = wuffs_base__slice_u8__subslice_i(v_s, v_src_bytes_per_pixel);
}
}
v_x += (((uint32_t)(1)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0]);
}
} else if (self->private_impl.f_depth < 8) {
v_multiplier = 1;
if (self->private_impl.f_color_type == 0) {
v_multiplier = WUFFS_PNG__LOW_BIT_DEPTH_MULTIPLIERS[self->private_impl.f_depth];
}
v_shift = ((8 - self->private_impl.f_depth) & 7);
v_packs_remaining = 0;
while (v_x < self->private_impl.f_frame_rect_x1) {
v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel);
if (v_i <= ((uint64_t)(v_dst.len))) {
if ((v_packs_remaining == 0) && (1 <= ((uint64_t)(v_s.len)))) {
v_packs_remaining = WUFFS_PNG__LOW_BIT_DEPTH_NUM_PACKS[self->private_impl.f_depth];
v_bits_packed = v_s.ptr[0];
v_s = wuffs_base__slice_u8__subslice_i(v_s, 1);
}
v_bits_unpacked[0] = ((uint8_t)((v_bits_packed >> v_shift) * v_multiplier));
v_bits_packed = ((uint8_t)(v_bits_packed << self->private_impl.f_depth));
v_packs_remaining = ((uint8_t)(v_packs_remaining - 1));
if (((uint32_t)((self->private_impl.f_remap_transparency & 4294967295))) != 0) {
v_bits_unpacked[1] = v_bits_unpacked[0];
v_bits_unpacked[2] = v_bits_unpacked[0];
v_bits_unpacked[3] = 255;
if (((uint32_t)((self->private_impl.f_remap_transparency & 4294967295))) == ((((uint32_t)(v_bits_unpacked[0])) << 0) |
(((uint32_t)(v_bits_unpacked[1])) << 8) |
(((uint32_t)(v_bits_unpacked[2])) << 16) |
(((uint32_t)(v_bits_unpacked[3])) << 24))) {
v_bits_unpacked[0] = 0;
v_bits_unpacked[1] = 0;
v_bits_unpacked[2] = 0;
v_bits_unpacked[3] = 0;
}
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4));
} else {
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 1));
}
}
v_x += (((uint32_t)(1)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0]);
}
} else {
while (v_x < self->private_impl.f_frame_rect_x1) {
v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel);
if (v_i <= ((uint64_t)(v_dst.len))) {
if (self->private_impl.f_color_type == 0) {
if (2 <= ((uint64_t)(v_s.len))) {
v_bits_unpacked[0] = v_s.ptr[1];
v_bits_unpacked[1] = v_s.ptr[0];
v_bits_unpacked[2] = v_s.ptr[1];
v_bits_unpacked[3] = v_s.ptr[0];
v_bits_unpacked[4] = v_s.ptr[1];
v_bits_unpacked[5] = v_s.ptr[0];
v_bits_unpacked[6] = 255;
v_bits_unpacked[7] = 255;
v_s = wuffs_base__slice_u8__subslice_i(v_s, 2);
if (self->private_impl.f_remap_transparency == ((((uint64_t)(v_bits_unpacked[0])) << 0) |
(((uint64_t)(v_bits_unpacked[1])) << 8) |
(((uint64_t)(v_bits_unpacked[2])) << 16) |
(((uint64_t)(v_bits_unpacked[3])) << 24) |
(((uint64_t)(v_bits_unpacked[4])) << 32) |
(((uint64_t)(v_bits_unpacked[5])) << 40) |
(((uint64_t)(v_bits_unpacked[6])) << 48) |
(((uint64_t)(v_bits_unpacked[7])) << 56))) {
v_bits_unpacked[0] = 0;
v_bits_unpacked[1] = 0;
v_bits_unpacked[2] = 0;
v_bits_unpacked[3] = 0;
v_bits_unpacked[4] = 0;
v_bits_unpacked[5] = 0;
v_bits_unpacked[6] = 0;
v_bits_unpacked[7] = 0;
}
}
} else if (self->private_impl.f_color_type == 2) {
if (6 <= ((uint64_t)(v_s.len))) {
v_bits_unpacked[0] = v_s.ptr[5];
v_bits_unpacked[1] = v_s.ptr[4];
v_bits_unpacked[2] = v_s.ptr[3];
v_bits_unpacked[3] = v_s.ptr[2];
v_bits_unpacked[4] = v_s.ptr[1];
v_bits_unpacked[5] = v_s.ptr[0];
v_bits_unpacked[6] = 255;
v_bits_unpacked[7] = 255;
v_s = wuffs_base__slice_u8__subslice_i(v_s, 6);
if (self->private_impl.f_remap_transparency == ((((uint64_t)(v_bits_unpacked[0])) << 0) |
(((uint64_t)(v_bits_unpacked[1])) << 8) |
(((uint64_t)(v_bits_unpacked[2])) << 16) |
(((uint64_t)(v_bits_unpacked[3])) << 24) |
(((uint64_t)(v_bits_unpacked[4])) << 32) |
(((uint64_t)(v_bits_unpacked[5])) << 40) |
(((uint64_t)(v_bits_unpacked[6])) << 48) |
(((uint64_t)(v_bits_unpacked[7])) << 56))) {
v_bits_unpacked[0] = 0;
v_bits_unpacked[1] = 0;
v_bits_unpacked[2] = 0;
v_bits_unpacked[3] = 0;
v_bits_unpacked[4] = 0;
v_bits_unpacked[5] = 0;
v_bits_unpacked[6] = 0;
v_bits_unpacked[7] = 0;
}
}
} else if (self->private_impl.f_color_type == 4) {
if (4 <= ((uint64_t)(v_s.len))) {
v_bits_unpacked[0] = v_s.ptr[1];
v_bits_unpacked[1] = v_s.ptr[0];
v_bits_unpacked[2] = v_s.ptr[1];
v_bits_unpacked[3] = v_s.ptr[0];
v_bits_unpacked[4] = v_s.ptr[1];
v_bits_unpacked[5] = v_s.ptr[0];
v_bits_unpacked[6] = v_s.ptr[3];
v_bits_unpacked[7] = v_s.ptr[2];
v_s = wuffs_base__slice_u8__subslice_i(v_s, 4);
}
} else {
if (8 <= ((uint64_t)(v_s.len))) {
v_bits_unpacked[0] = v_s.ptr[5];
v_bits_unpacked[1] = v_s.ptr[4];
v_bits_unpacked[2] = v_s.ptr[3];
v_bits_unpacked[3] = v_s.ptr[2];
v_bits_unpacked[4] = v_s.ptr[1];
v_bits_unpacked[5] = v_s.ptr[0];
v_bits_unpacked[6] = v_s.ptr[7];
v_bits_unpacked[7] = v_s.ptr[6];
v_s = wuffs_base__slice_u8__subslice_i(v_s, 8);
}
}
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 8));
}
v_x += (((uint32_t)(1)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0]);
}
}
v_prev_row = v_curr_row;
v_y += (((uint32_t)(1)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][3]);
}
return wuffs_base__make_status(NULL);
}
#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA)
// ---------------- Status Codes Implementations
const char wuffs_tga__error__bad_header[] = "#tga: bad header";
const char wuffs_tga__error__bad_run_length_encoding[] = "#tga: bad run length encoding";
const char wuffs_tga__error__unsupported_tga_file[] = "#tga: unsupported TGA file";
// ---------------- Private Consts
// ---------------- Private Initializer Prototypes
// ---------------- Private Function Prototypes
// ---------------- VTables
const wuffs_base__image_decoder__func_ptrs
wuffs_tga__decoder__func_ptrs_for__wuffs_base__image_decoder = {
(wuffs_base__status(*)(void*,
wuffs_base__pixel_buffer*,
wuffs_base__io_buffer*,
wuffs_base__pixel_blend,
wuffs_base__slice_u8,
wuffs_base__decode_frame_options*))(&wuffs_tga__decoder__decode_frame),
(wuffs_base__status(*)(void*,
wuffs_base__frame_config*,
wuffs_base__io_buffer*))(&wuffs_tga__decoder__decode_frame_config),
(wuffs_base__status(*)(void*,
wuffs_base__image_config*,
wuffs_base__io_buffer*))(&wuffs_tga__decoder__decode_image_config),
(wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_tga__decoder__frame_dirty_rect),
(uint32_t(*)(const void*))(&wuffs_tga__decoder__num_animation_loops),
(uint64_t(*)(const void*))(&wuffs_tga__decoder__num_decoded_frame_configs),
(uint64_t(*)(const void*))(&wuffs_tga__decoder__num_decoded_frames),
(wuffs_base__status(*)(void*,
uint64_t,
uint64_t))(&wuffs_tga__decoder__restart_frame),
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_tga__decoder__set_quirk_enabled),
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_tga__decoder__set_report_metadata),
(wuffs_base__status(*)(void*,
wuffs_base__io_buffer*,
wuffs_base__more_information*,
wuffs_base__io_buffer*))(&wuffs_tga__decoder__tell_me_more),
(wuffs_base__range_ii_u64(*)(const void*))(&wuffs_tga__decoder__workbuf_len),
};
// ---------------- Initializer Implementations
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_tga__decoder__initialize(
wuffs_tga__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options){
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (sizeof(*self) != sizeof_star_self) {
return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
}
if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
(((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
}
if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
// The whole point of this if-check is to detect an uninitialized *self.
// We disable the warning on GCC. Clang-5.0 does not have this warning.
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
if (self->private_impl.magic != 0) {
return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
}
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
} else {
if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
memset(self, 0, sizeof(*self));
options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
} else {
memset(&(self->private_impl), 0, sizeof(self->private_impl));
}
}
self->private_impl.magic = WUFFS_BASE__MAGIC;
self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
wuffs_base__image_decoder__vtable_name;
self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
(const void*)(&wuffs_tga__decoder__func_ptrs_for__wuffs_base__image_decoder);
return wuffs_base__make_status(NULL);
}
wuffs_tga__decoder*
wuffs_tga__decoder__alloc() {
wuffs_tga__decoder* x =
(wuffs_tga__decoder*)(calloc(sizeof(wuffs_tga__decoder), 1));
if (!x) {
return NULL;
}
if (wuffs_tga__decoder__initialize(
x, sizeof(wuffs_tga__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
free(x);
return NULL;
}
return x;
}
size_t
sizeof__wuffs_tga__decoder() {
return sizeof(wuffs_tga__decoder);
}
// ---------------- Function Implementations
// -------- func tga.decoder.set_quirk_enabled
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_tga__decoder__set_quirk_enabled(
wuffs_tga__decoder* self,
uint32_t a_quirk,
bool a_enabled) {
return wuffs_base__make_empty_struct();
}
// -------- func tga.decoder.decode_image_config
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_tga__decoder__decode_image_config(
wuffs_tga__decoder* self,
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 1)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint32_t v_c = 0;
uint32_t v_c5 = 0;
uint32_t v_i = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
if (coro_susp_point) {
v_i = self->private_data.s_decode_image_config[0].v_i;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_call_sequence != 0) {
status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
self->private_impl.f_header_id_length = t_0;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_1 = *iop_a_src++;
self->private_impl.f_header_color_map_type = t_1;
}
if (self->private_impl.f_header_color_map_type > 1) {
status = wuffs_base__make_status(wuffs_tga__error__bad_header);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_2 = *iop_a_src++;
self->private_impl.f_header_image_type = t_2;
}
if ((self->private_impl.f_header_image_type == 1) ||
(self->private_impl.f_header_image_type == 2) ||
(self->private_impl.f_header_image_type == 3) ||
(self->private_impl.f_header_image_type == 9) ||
(self->private_impl.f_header_image_type == 10) ||
(self->private_impl.f_header_image_type == 11)) {
} else {
status = wuffs_base__make_status(wuffs_tga__error__bad_header);
goto exit;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4);
uint16_t t_3;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_3 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
iop_a_src += 2;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3;
if (num_bits_3 == 8) {
t_3 = ((uint16_t)(*scratch));
break;
}
num_bits_3 += 8;
*scratch |= ((uint64_t)(num_bits_3)) << 56;
}
}
self->private_impl.f_header_color_map_first_entry_index = t_3;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6);
uint16_t t_4;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_4 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src);
iop_a_src += 2;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4;
if (num_bits_4 == 8) {
t_4 = ((uint16_t)(*scratch));
break;
}
num_bits_4 += 8;
*scratch |= ((uint64_t)(num_bits_4)) << 56;
}
}
self->private_impl.f_header_color_map_length = t_4;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_5 = *iop_a_src++;
self->private_impl.f_header_color_map_entry_size = t_5;
}
if (self->private_impl.f_header_color_map_type != 0) {
if ((self->private_impl.f_header_color_map_first_entry_index != 0) || (self->private_impl.f_header_color_map_length > 256)) {
status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
goto exit;
} else if ((self->private_impl.f_header_color_map_entry_size != 15) &&
(self->private_impl.f_header_color_map_entry_size != 16) &&
(self->private_impl.f_header_color_map_entry_size != 24) &&
(self->private_impl.f_header_color_map_entry_size != 32)) {
status = wuffs_base__make_status(wuffs_tga__error__bad_header);
goto exit;
}
} else {
if ((self->private_impl.f_header_color_map_first_entry_index != 0) || (self->private_impl.f_header_color_map_length != 0) || (self->private_impl.f_header_color_map_entry_size != 0)) {
status = wuffs_base__make_status(wuffs_tga__error__bad_header);
goto exit;
}
}
self->private_data.s_decode_image_config[0].scratch = 4;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9);
if (self->private_data.s_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_image_config[0].scratch;
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10);
uint32_t t_6;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_6 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_6 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_6;
if (num_bits_6 == 8) {
t_6 = ((uint32_t)(*scratch));
break;
}
num_bits_6 += 8;
*scratch |= ((uint64_t)(num_bits_6)) << 56;
}
}
self->private_impl.f_width = t_6;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12);
uint32_t t_7;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_7 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7;
if (num_bits_7 == 8) {
t_7 = ((uint32_t)(*scratch));
break;
}
num_bits_7 += 8;
*scratch |= ((uint64_t)(num_bits_7)) << 56;
}
}
self->private_impl.f_height = t_7;
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_8 = *iop_a_src++;
self->private_impl.f_header_pixel_depth = t_8;
}
if ((self->private_impl.f_header_pixel_depth != 1) &&
(self->private_impl.f_header_pixel_depth != 8) &&
(self->private_impl.f_header_pixel_depth != 15) &&
(self->private_impl.f_header_pixel_depth != 16) &&
(self->private_impl.f_header_pixel_depth != 24) &&
(self->private_impl.f_header_pixel_depth != 32)) {
status = wuffs_base__make_status(wuffs_tga__error__bad_header);
goto exit;
}
if ((self->private_impl.f_header_image_type | 8) == 9) {
self->private_impl.f_scratch_bytes_per_pixel = 1;
self->private_impl.f_src_bytes_per_pixel = 1;
self->private_impl.f_src_pixfmt = 2164523016;
self->private_impl.f_opaque = ((self->private_impl.f_header_color_map_entry_size == 15) || (self->private_impl.f_header_color_map_entry_size == 24));
} else if ((self->private_impl.f_header_image_type | 8) == 10) {
if ((self->private_impl.f_header_pixel_depth == 15) || (self->private_impl.f_header_pixel_depth == 16)) {
self->private_impl.f_scratch_bytes_per_pixel = 4;
self->private_impl.f_src_bytes_per_pixel = 0;
self->private_impl.f_src_pixfmt = 2164295816;
} else if (self->private_impl.f_header_pixel_depth == 24) {
self->private_impl.f_scratch_bytes_per_pixel = 3;
self->private_impl.f_src_bytes_per_pixel = 3;
self->private_impl.f_src_pixfmt = 2147485832;
self->private_impl.f_opaque = true;
} else if (self->private_impl.f_header_pixel_depth == 32) {
self->private_impl.f_scratch_bytes_per_pixel = 4;
self->private_impl.f_src_bytes_per_pixel = 4;
self->private_impl.f_src_pixfmt = 2164295816;
} else {
status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
goto exit;
}
} else {
if (self->private_impl.f_header_pixel_depth == 8) {
self->private_impl.f_scratch_bytes_per_pixel = 1;
self->private_impl.f_src_bytes_per_pixel = 1;
self->private_impl.f_src_pixfmt = 536870920;
self->private_impl.f_opaque = true;
} else {
status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
goto exit;
}
}
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_9 = *iop_a_src++;
self->private_impl.f_header_image_descriptor = t_9;
}
if ((self->private_impl.f_header_image_descriptor & 16) != 0) {
status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file);
goto exit;
}
self->private_data.s_decode_image_config[0].scratch = ((uint32_t)(self->private_impl.f_header_id_length));
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16);
if (self->private_data.s_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_image_config[0].scratch;
if (self->private_impl.f_header_color_map_type != 0) {
while (v_i < ((uint32_t)(self->private_impl.f_header_color_map_length))) {
if (self->private_impl.f_header_color_map_entry_size == 24) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17);
uint32_t t_10;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) {
t_10 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src)));
iop_a_src += 3;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_10 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_10;
if (num_bits_10 == 16) {
t_10 = ((uint32_t)(*scratch));
break;
}
num_bits_10 += 8;
*scratch |= ((uint64_t)(num_bits_10)) << 56;
}
}
v_c = t_10;
}
self->private_data.f_src_palette[(((v_i & 255) * 4) + 0)] = ((uint8_t)(((v_c >> 0) & 255)));
self->private_data.f_src_palette[(((v_i & 255) * 4) + 1)] = ((uint8_t)(((v_c >> 8) & 255)));
self->private_data.f_src_palette[(((v_i & 255) * 4) + 2)] = ((uint8_t)(((v_c >> 16) & 255)));
self->private_data.f_src_palette[(((v_i & 255) * 4) + 3)] = 255;
} else if (self->private_impl.f_header_color_map_entry_size == 32) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19);
uint32_t t_11;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) {
t_11 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src);
iop_a_src += 4;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_11 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_11;
if (num_bits_11 == 24) {
t_11 = ((uint32_t)(*scratch));
break;
}
num_bits_11 += 8;
*scratch |= ((uint64_t)(num_bits_11)) << 56;
}
}
v_c = t_11;
}
self->private_data.f_src_palette[(((v_i & 255) * 4) + 0)] = ((uint8_t)(((v_c >> 0) & 255)));
self->private_data.f_src_palette[(((v_i & 255) * 4) + 1)] = ((uint8_t)(((v_c >> 8) & 255)));
self->private_data.f_src_palette[(((v_i & 255) * 4) + 2)] = ((uint8_t)(((v_c >> 16) & 255)));
self->private_data.f_src_palette[(((v_i & 255) * 4) + 3)] = ((uint8_t)(((v_c >> 24) & 255)));
} else {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21);
uint32_t t_12;
if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) {
t_12 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
} else {
self->private_data.s_decode_image_config[0].scratch = 0;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22);
while (true) {
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint64_t* scratch = &self->private_data.s_decode_image_config[0].scratch;
uint32_t num_bits_12 = ((uint32_t)(*scratch >> 56));
*scratch <<= 8;
*scratch >>= 8;
*scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_12;
if (num_bits_12 == 8) {
t_12 = ((uint32_t)(*scratch));
break;
}
num_bits_12 += 8;
*scratch |= ((uint64_t)(num_bits_12)) << 56;
}
}
v_c = t_12;
}
v_c5 = (31 & (v_c >> 0));
self->private_data.f_src_palette[(((v_i & 255) * 4) + 0)] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2))));
v_c5 = (31 & (v_c >> 5));
self->private_data.f_src_palette[(((v_i & 255) * 4) + 1)] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2))));
v_c5 = (31 & (v_c >> 10));
self->private_data.f_src_palette[(((v_i & 255) * 4) + 2)] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2))));
self->private_data.f_src_palette[(((v_i & 255) * 4) + 3)] = 255;
}
v_i += 1;
}
while (v_i < 256) {
self->private_data.f_src_palette[((v_i * 4) + 0)] = 0;
self->private_data.f_src_palette[((v_i * 4) + 1)] = 0;
self->private_data.f_src_palette[((v_i * 4) + 2)] = 0;
self->private_data.f_src_palette[((v_i * 4) + 3)] = 255;
v_i += 1;
}
}
self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
if (a_dst != NULL) {
wuffs_base__image_config__set(
a_dst,
self->private_impl.f_src_pixfmt,
0,
self->private_impl.f_width,
self->private_impl.f_height,
self->private_impl.f_frame_config_io_position,
self->private_impl.f_opaque);
}
self->private_impl.f_call_sequence = 32;
goto ok;
ok:
self->private_impl.p_decode_image_config[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
self->private_data.s_decode_image_config[0].v_i = v_i;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func tga.decoder.decode_frame_config
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_tga__decoder__decode_frame_config(
wuffs_tga__decoder* self,
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 2)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_call_sequence == 32) {
} else if (self->private_impl.f_call_sequence < 32) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_tga__decoder__decode_image_config(self, NULL, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
} else if (self->private_impl.f_call_sequence == 40) {
if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
status = wuffs_base__make_status(wuffs_base__error__bad_restart);
goto exit;
}
} else if (self->private_impl.f_call_sequence == 64) {
self->private_impl.f_call_sequence = 96;
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
} else {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
}
if (a_dst != NULL) {
wuffs_base__frame_config__set(
a_dst,
wuffs_base__utility__make_rect_ie_u32(
0,
0,
self->private_impl.f_width,
self->private_impl.f_height),
((wuffs_base__flicks)(0)),
0,
self->private_impl.f_frame_config_io_position,
0,
self->private_impl.f_opaque,
false,
4278190080);
}
self->private_impl.f_call_sequence = 64;
ok:
self->private_impl.p_decode_frame_config[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func tga.decoder.decode_frame
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_tga__decoder__decode_frame(
wuffs_tga__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 3)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
wuffs_base__status v_status = wuffs_base__make_status(NULL);
wuffs_base__pixel_format v_dst_pixfmt = {0};
uint32_t v_dst_bits_per_pixel = 0;
uint64_t v_dst_bytes_per_pixel = 0;
uint32_t v_dst_x = 0;
uint32_t v_dst_y = 0;
wuffs_base__table_u8 v_tab = {0};
wuffs_base__slice_u8 v_dst_palette = {0};
wuffs_base__slice_u8 v_dst = {0};
uint64_t v_dst_start = 0;
wuffs_base__slice_u8 v_src_palette = {0};
uint64_t v_mark = 0;
uint64_t v_num_pixels64 = 0;
uint32_t v_num_pixels32 = 0;
uint32_t v_lit_length = 0;
uint32_t v_run_length = 0;
uint64_t v_num_dst_bytes = 0;
uint32_t v_num_src_bytes = 0;
uint32_t v_c = 0;
uint32_t v_c5 = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
if (coro_susp_point) {
v_dst_bytes_per_pixel = self->private_data.s_decode_frame[0].v_dst_bytes_per_pixel;
v_dst_x = self->private_data.s_decode_frame[0].v_dst_x;
v_dst_y = self->private_data.s_decode_frame[0].v_dst_y;
v_mark = self->private_data.s_decode_frame[0].v_mark;
v_num_pixels32 = self->private_data.s_decode_frame[0].v_num_pixels32;
v_lit_length = self->private_data.s_decode_frame[0].v_lit_length;
v_run_length = self->private_data.s_decode_frame[0].v_run_length;
v_num_dst_bytes = self->private_data.s_decode_frame[0].v_num_dst_bytes;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_call_sequence == 64) {
} else if (self->private_impl.f_call_sequence < 64) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_tga__decoder__decode_frame_config(self, NULL, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
} else {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
}
if (self->private_impl.f_header_color_map_type != 0) {
v_src_palette = wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024);
}
v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
wuffs_base__pixel_buffer__pixel_format(a_dst),
wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)),
wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt),
v_src_palette,
a_blend);
if ( ! wuffs_base__status__is_ok(&v_status)) {
status = v_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
}
v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
if ((v_dst_bits_per_pixel & 7) != 0) {
status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
goto exit;
}
v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8)));
if ((self->private_impl.f_header_image_descriptor & 32) == 0) {
v_dst_y = ((uint32_t)(self->private_impl.f_height - 1));
}
if ((self->private_impl.f_header_image_type & 8) == 0) {
v_lit_length = self->private_impl.f_width;
}
label__resume__continue:;
while (true) {
v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0);
v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024));
while (v_dst_y < self->private_impl.f_height) {
v_dst = wuffs_base__table_u8__row_u32(v_tab, v_dst_y);
v_dst_start = (((uint64_t)(v_dst_x)) * v_dst_bytes_per_pixel);
if (v_dst_start <= ((uint64_t)(v_dst.len))) {
v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_start);
} else {
v_dst = wuffs_base__utility__empty_slice_u8();
}
while (v_dst_x < self->private_impl.f_width) {
if (self->private_impl.f_src_bytes_per_pixel > 0) {
if (v_lit_length > 0) {
v_mark = ((uint64_t)(iop_a_src - io0_a_src));
v_num_pixels64 = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(self->private_impl.f_src_bytes_per_pixel)));
v_num_pixels32 = ((uint32_t)(wuffs_base__u64__min(v_num_pixels64, ((uint64_t)(v_lit_length)))));
v_num_dst_bytes = (((uint64_t)(v_num_pixels32)) * v_dst_bytes_per_pixel);
v_num_src_bytes = (v_num_pixels32 * self->private_impl.f_src_bytes_per_pixel);
self->private_data.s_decode_frame[0].scratch = v_num_src_bytes;
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (self->private_data.s_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) {
self->private_data.s_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src));
iop_a_src = io2_a_src;
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
iop_a_src += self->private_data.s_decode_frame[0].scratch;
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src));
if (v_num_dst_bytes <= ((uint64_t)(v_dst.len))) {
v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_num_dst_bytes);
} else {
v_dst = wuffs_base__utility__empty_slice_u8();
}
v_dst_x += v_num_pixels32;
v_lit_length = (((uint32_t)(v_lit_length - v_num_pixels32)) & 65535);
if (v_lit_length > 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3);
goto label__resume__continue;
}
} else if (v_run_length > 0) {
v_run_length -= 1;
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_scratch_bytes_per_pixel));
if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
}
v_dst_x += 1;
} else {
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4);
goto label__resume__continue;
}
if (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) < 128) {
v_lit_length = (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) + 1);
iop_a_src += 1;
if ((v_lit_length + v_dst_x) > self->private_impl.f_width) {
status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
goto exit;
}
} else {
if (self->private_impl.f_src_bytes_per_pixel == 1) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 2) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5);
goto label__resume__continue;
}
v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127) + 1);
iop_a_src += 1;
self->private_data.f_scratch[0] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
iop_a_src += 1;
} else if (self->private_impl.f_src_bytes_per_pixel == 3) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 4) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6);
goto label__resume__continue;
}
v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127) + 1);
iop_a_src += 1;
self->private_data.f_scratch[0] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
iop_a_src += 1;
self->private_data.f_scratch[1] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
iop_a_src += 1;
self->private_data.f_scratch[2] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
iop_a_src += 1;
} else {
if (((uint64_t)(io2_a_src - iop_a_src)) < 5) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7);
goto label__resume__continue;
}
v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127) + 1);
iop_a_src += 1;
self->private_data.f_scratch[0] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
iop_a_src += 1;
self->private_data.f_scratch[1] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
iop_a_src += 1;
self->private_data.f_scratch[2] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
iop_a_src += 1;
self->private_data.f_scratch[3] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
iop_a_src += 1;
}
if ((v_run_length + v_dst_x) > self->private_impl.f_width) {
status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
goto exit;
}
}
}
} else {
if (v_lit_length > 0) {
if (((uint64_t)(io2_a_src - iop_a_src)) < 2) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8);
goto label__resume__continue;
}
v_c = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
v_c5 = (31 & (v_c >> 0));
self->private_data.f_scratch[0] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2))));
v_c5 = (31 & (v_c >> 5));
self->private_data.f_scratch[1] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2))));
v_c5 = (31 & (v_c >> 10));
self->private_data.f_scratch[2] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2))));
self->private_data.f_scratch[3] = 255;
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, 4));
if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
}
v_dst_x += 1;
v_lit_length -= 1;
} else if (v_run_length > 0) {
v_run_length -= 1;
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_scratch_bytes_per_pixel));
if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
}
v_dst_x += 1;
} else {
if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9);
goto label__resume__continue;
}
if (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) < 128) {
v_lit_length = (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) + 1);
iop_a_src += 1;
if ((v_lit_length + v_dst_x) > self->private_impl.f_width) {
status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
goto exit;
}
} else {
if (((uint64_t)(io2_a_src - iop_a_src)) < 3) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10);
goto label__resume__continue;
}
v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127) + 1);
iop_a_src += 1;
v_c = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src)));
iop_a_src += 2;
v_c5 = (31 & (v_c >> 0));
self->private_data.f_scratch[0] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2))));
v_c5 = (31 & (v_c >> 5));
self->private_data.f_scratch[1] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2))));
v_c5 = (31 & (v_c >> 10));
self->private_data.f_scratch[2] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2))));
self->private_data.f_scratch[3] = 255;
if ((v_run_length + v_dst_x) > self->private_impl.f_width) {
status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding);
goto exit;
}
}
}
}
}
v_dst_x = 0;
if ((self->private_impl.f_header_image_descriptor & 32) == 0) {
v_dst_y -= 1;
} else {
v_dst_y += 1;
}
if ((self->private_impl.f_header_image_type & 8) == 0) {
v_lit_length = self->private_impl.f_width;
}
}
goto label__resume__break;
}
label__resume__break:;
self->private_impl.f_call_sequence = 96;
ok:
self->private_impl.p_decode_frame[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
self->private_data.s_decode_frame[0].v_dst_bytes_per_pixel = v_dst_bytes_per_pixel;
self->private_data.s_decode_frame[0].v_dst_x = v_dst_x;
self->private_data.s_decode_frame[0].v_dst_y = v_dst_y;
self->private_data.s_decode_frame[0].v_mark = v_mark;
self->private_data.s_decode_frame[0].v_num_pixels32 = v_num_pixels32;
self->private_data.s_decode_frame[0].v_lit_length = v_lit_length;
self->private_data.s_decode_frame[0].v_run_length = v_run_length;
self->private_data.s_decode_frame[0].v_num_dst_bytes = v_num_dst_bytes;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func tga.decoder.frame_dirty_rect
WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
wuffs_tga__decoder__frame_dirty_rect(
const wuffs_tga__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_rect_ie_u32();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_rect_ie_u32();
}
return wuffs_base__utility__make_rect_ie_u32(
0,
0,
self->private_impl.f_width,
self->private_impl.f_height);
}
// -------- func tga.decoder.num_animation_loops
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_tga__decoder__num_animation_loops(
const wuffs_tga__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
return 0;
}
// -------- func tga.decoder.num_decoded_frame_configs
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_tga__decoder__num_decoded_frame_configs(
const wuffs_tga__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
if (self->private_impl.f_call_sequence > 32) {
return 1;
}
return 0;
}
// -------- func tga.decoder.num_decoded_frames
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_tga__decoder__num_decoded_frames(
const wuffs_tga__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
if (self->private_impl.f_call_sequence > 64) {
return 1;
}
return 0;
}
// -------- func tga.decoder.restart_frame
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_tga__decoder__restart_frame(
wuffs_tga__decoder* self,
uint64_t a_index,
uint64_t a_io_position) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (self->private_impl.f_call_sequence < 32) {
return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
}
if (a_index != 0) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
self->private_impl.f_call_sequence = 40;
self->private_impl.f_frame_config_io_position = a_io_position;
return wuffs_base__make_status(NULL);
}
// -------- func tga.decoder.set_report_metadata
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_tga__decoder__set_report_metadata(
wuffs_tga__decoder* self,
uint32_t a_fourcc,
bool a_report) {
return wuffs_base__make_empty_struct();
}
// -------- func tga.decoder.tell_me_more
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_tga__decoder__tell_me_more(
wuffs_tga__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 4)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
status = wuffs_base__make_status(wuffs_base__error__no_more_information);
goto exit;
goto ok;
ok:
goto exit;
exit:
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func tga.decoder.workbuf_len
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_tga__decoder__workbuf_len(
const wuffs_tga__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
return wuffs_base__utility__make_range_ii_u64(0, 0);
}
#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA)
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP)
// ---------------- Status Codes Implementations
const char wuffs_wbmp__error__bad_header[] = "#wbmp: bad header";
// ---------------- Private Consts
// ---------------- Private Initializer Prototypes
// ---------------- Private Function Prototypes
// ---------------- VTables
const wuffs_base__image_decoder__func_ptrs
wuffs_wbmp__decoder__func_ptrs_for__wuffs_base__image_decoder = {
(wuffs_base__status(*)(void*,
wuffs_base__pixel_buffer*,
wuffs_base__io_buffer*,
wuffs_base__pixel_blend,
wuffs_base__slice_u8,
wuffs_base__decode_frame_options*))(&wuffs_wbmp__decoder__decode_frame),
(wuffs_base__status(*)(void*,
wuffs_base__frame_config*,
wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__decode_frame_config),
(wuffs_base__status(*)(void*,
wuffs_base__image_config*,
wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__decode_image_config),
(wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_wbmp__decoder__frame_dirty_rect),
(uint32_t(*)(const void*))(&wuffs_wbmp__decoder__num_animation_loops),
(uint64_t(*)(const void*))(&wuffs_wbmp__decoder__num_decoded_frame_configs),
(uint64_t(*)(const void*))(&wuffs_wbmp__decoder__num_decoded_frames),
(wuffs_base__status(*)(void*,
uint64_t,
uint64_t))(&wuffs_wbmp__decoder__restart_frame),
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_wbmp__decoder__set_quirk_enabled),
(wuffs_base__empty_struct(*)(void*,
uint32_t,
bool))(&wuffs_wbmp__decoder__set_report_metadata),
(wuffs_base__status(*)(void*,
wuffs_base__io_buffer*,
wuffs_base__more_information*,
wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__tell_me_more),
(wuffs_base__range_ii_u64(*)(const void*))(&wuffs_wbmp__decoder__workbuf_len),
};
// ---------------- Initializer Implementations
wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT
wuffs_wbmp__decoder__initialize(
wuffs_wbmp__decoder* self,
size_t sizeof_star_self,
uint64_t wuffs_version,
uint32_t options){
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (sizeof(*self) != sizeof_star_self) {
return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver);
}
if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) ||
(((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) {
return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version);
}
if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) {
// The whole point of this if-check is to detect an uninitialized *self.
// We disable the warning on GCC. Clang-5.0 does not have this warning.
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
if (self->private_impl.magic != 0) {
return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed);
}
#if !defined(__clang__) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
} else {
if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) {
memset(self, 0, sizeof(*self));
options |= WUFFS_INITIALIZE__ALREADY_ZEROED;
} else {
memset(&(self->private_impl), 0, sizeof(self->private_impl));
}
}
self->private_impl.magic = WUFFS_BASE__MAGIC;
self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name =
wuffs_base__image_decoder__vtable_name;
self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers =
(const void*)(&wuffs_wbmp__decoder__func_ptrs_for__wuffs_base__image_decoder);
return wuffs_base__make_status(NULL);
}
wuffs_wbmp__decoder*
wuffs_wbmp__decoder__alloc() {
wuffs_wbmp__decoder* x =
(wuffs_wbmp__decoder*)(calloc(sizeof(wuffs_wbmp__decoder), 1));
if (!x) {
return NULL;
}
if (wuffs_wbmp__decoder__initialize(
x, sizeof(wuffs_wbmp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) {
free(x);
return NULL;
}
return x;
}
size_t
sizeof__wuffs_wbmp__decoder() {
return sizeof(wuffs_wbmp__decoder);
}
// ---------------- Function Implementations
// -------- func wbmp.decoder.set_quirk_enabled
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_wbmp__decoder__set_quirk_enabled(
wuffs_wbmp__decoder* self,
uint32_t a_quirk,
bool a_enabled) {
return wuffs_base__make_empty_struct();
}
// -------- func wbmp.decoder.decode_image_config
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_wbmp__decoder__decode_image_config(
wuffs_wbmp__decoder* self,
wuffs_base__image_config* a_dst,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 1)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
uint8_t v_c = 0;
uint32_t v_i = 0;
uint32_t v_x32 = 0;
uint64_t v_x64 = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0];
if (coro_susp_point) {
v_i = self->private_data.s_decode_image_config[0].v_i;
v_x32 = self->private_data.s_decode_image_config[0].v_x32;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_call_sequence != 0) {
status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
goto exit;
}
v_i = 0;
while (v_i < 2) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_0 = *iop_a_src++;
v_c = t_0;
}
if (v_c != 0) {
status = wuffs_base__make_status(wuffs_wbmp__error__bad_header);
goto exit;
}
v_i += 1;
}
v_i = 0;
while (v_i < 2) {
v_x32 = 0;
while (true) {
{
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2);
if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
goto suspend;
}
uint8_t t_1 = *iop_a_src++;
v_c = t_1;
}
v_x32 |= ((uint32_t)((v_c & 127)));
if ((v_c >> 7) == 0) {
goto label__0__break;
}
v_x64 = (((uint64_t)(v_x32)) << 7);
if (v_x64 > 4294967295) {
status = wuffs_base__make_status(wuffs_wbmp__error__bad_header);
goto exit;
}
v_x32 = ((uint32_t)(v_x64));
}
label__0__break:;
if (v_i == 0) {
self->private_impl.f_width = v_x32;
} else {
self->private_impl.f_height = v_x32;
}
v_i += 1;
}
self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)));
if (a_dst != NULL) {
wuffs_base__image_config__set(
a_dst,
2198077448,
0,
self->private_impl.f_width,
self->private_impl.f_height,
self->private_impl.f_frame_config_io_position,
true);
}
self->private_impl.f_call_sequence = 32;
goto ok;
ok:
self->private_impl.p_decode_image_config[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0;
self->private_data.s_decode_image_config[0].v_i = v_i;
self->private_data.s_decode_image_config[0].v_x32 = v_x32;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func wbmp.decoder.decode_frame_config
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_wbmp__decoder__decode_frame_config(
wuffs_wbmp__decoder* self,
wuffs_base__frame_config* a_dst,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 2)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0];
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_call_sequence == 32) {
} else if (self->private_impl.f_call_sequence < 32) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_wbmp__decoder__decode_image_config(self, NULL, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
} else if (self->private_impl.f_call_sequence == 40) {
if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) {
status = wuffs_base__make_status(wuffs_base__error__bad_restart);
goto exit;
}
} else if (self->private_impl.f_call_sequence == 64) {
self->private_impl.f_call_sequence = 96;
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
} else {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
}
if (a_dst != NULL) {
wuffs_base__frame_config__set(
a_dst,
wuffs_base__utility__make_rect_ie_u32(
0,
0,
self->private_impl.f_width,
self->private_impl.f_height),
((wuffs_base__flicks)(0)),
0,
self->private_impl.f_frame_config_io_position,
0,
true,
false,
4278190080);
}
self->private_impl.f_call_sequence = 64;
ok:
self->private_impl.p_decode_frame_config[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func wbmp.decoder.decode_frame
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_wbmp__decoder__decode_frame(
wuffs_wbmp__decoder* self,
wuffs_base__pixel_buffer* a_dst,
wuffs_base__io_buffer* a_src,
wuffs_base__pixel_blend a_blend,
wuffs_base__slice_u8 a_workbuf,
wuffs_base__decode_frame_options* a_opts) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 3)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
wuffs_base__status v_status = wuffs_base__make_status(NULL);
wuffs_base__pixel_format v_dst_pixfmt = {0};
uint32_t v_dst_bits_per_pixel = 0;
uint64_t v_dst_bytes_per_pixel = 0;
uint64_t v_dst_x_in_bytes = 0;
uint32_t v_dst_x = 0;
uint32_t v_dst_y = 0;
wuffs_base__table_u8 v_tab = {0};
wuffs_base__slice_u8 v_dst = {0};
uint8_t v_src[1] = {0};
uint8_t v_c = 0;
const uint8_t* iop_a_src = NULL;
const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL;
if (a_src) {
io0_a_src = a_src->data.ptr;
io1_a_src = io0_a_src + a_src->meta.ri;
iop_a_src = io1_a_src;
io2_a_src = io0_a_src + a_src->meta.wi;
}
uint32_t coro_susp_point = self->private_impl.p_decode_frame[0];
if (coro_susp_point) {
v_dst_bytes_per_pixel = self->private_data.s_decode_frame[0].v_dst_bytes_per_pixel;
v_dst_x = self->private_data.s_decode_frame[0].v_dst_x;
v_dst_y = self->private_data.s_decode_frame[0].v_dst_y;
memcpy(v_src, self->private_data.s_decode_frame[0].v_src, sizeof(v_src));
v_c = self->private_data.s_decode_frame[0].v_c;
}
switch (coro_susp_point) {
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0;
if (self->private_impl.f_call_sequence == 64) {
} else if (self->private_impl.f_call_sequence < 64) {
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1);
status = wuffs_wbmp__decoder__decode_frame_config(self, NULL, a_src);
if (a_src) {
iop_a_src = a_src->data.ptr + a_src->meta.ri;
}
if (status.repr) {
goto suspend;
}
} else {
status = wuffs_base__make_status(wuffs_base__note__end_of_data);
goto ok;
}
v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler,
wuffs_base__pixel_buffer__pixel_format(a_dst),
wuffs_base__pixel_buffer__palette(a_dst),
wuffs_base__utility__make_pixel_format(536870920),
wuffs_base__utility__empty_slice_u8(),
a_blend);
if ( ! wuffs_base__status__is_ok(&v_status)) {
status = v_status;
if (wuffs_base__status__is_error(&status)) {
goto exit;
} else if (wuffs_base__status__is_suspension(&status)) {
status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension);
goto exit;
}
goto ok;
}
v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst);
v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt);
if ((v_dst_bits_per_pixel & 7) != 0) {
status = wuffs_base__make_status(wuffs_base__error__unsupported_option);
goto exit;
}
v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8)));
if (self->private_impl.f_width > 0) {
v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0);
while (v_dst_y < self->private_impl.f_height) {
v_dst = wuffs_base__table_u8__row_u32(v_tab, v_dst_y);
v_dst_x = 0;
while (v_dst_x < self->private_impl.f_width) {
if ((v_dst_x & 7) == 0) {
while (((uint64_t)(io2_a_src - iop_a_src)) <= 0) {
status = wuffs_base__make_status(wuffs_base__suspension__short_read);
WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2);
v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0);
v_dst = wuffs_base__table_u8__row_u32(v_tab, v_dst_y);
v_dst_x_in_bytes = (((uint64_t)(v_dst_x)) * v_dst_bytes_per_pixel);
if (v_dst_x_in_bytes <= ((uint64_t)(v_dst.len))) {
v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_x_in_bytes);
}
}
v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src);
iop_a_src += 1;
}
if ((v_c & 128) == 0) {
v_src[0] = 0;
} else {
v_src[0] = 255;
}
v_c = ((uint8_t)(((((uint32_t)(v_c)) << 1) & 255)));
wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__utility__empty_slice_u8(), wuffs_base__make_slice_u8(v_src, 1));
if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) {
v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel);
}
v_dst_x += 1;
}
v_dst_y += 1;
}
}
self->private_impl.f_call_sequence = 96;
ok:
self->private_impl.p_decode_frame[0] = 0;
goto exit;
}
goto suspend;
suspend:
self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0;
self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0;
self->private_data.s_decode_frame[0].v_dst_bytes_per_pixel = v_dst_bytes_per_pixel;
self->private_data.s_decode_frame[0].v_dst_x = v_dst_x;
self->private_data.s_decode_frame[0].v_dst_y = v_dst_y;
memcpy(self->private_data.s_decode_frame[0].v_src, v_src, sizeof(v_src));
self->private_data.s_decode_frame[0].v_c = v_c;
goto exit;
exit:
if (a_src) {
a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr));
}
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func wbmp.decoder.frame_dirty_rect
WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32
wuffs_wbmp__decoder__frame_dirty_rect(
const wuffs_wbmp__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_rect_ie_u32();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_rect_ie_u32();
}
return wuffs_base__utility__make_rect_ie_u32(
0,
0,
self->private_impl.f_width,
self->private_impl.f_height);
}
// -------- func wbmp.decoder.num_animation_loops
WUFFS_BASE__MAYBE_STATIC uint32_t
wuffs_wbmp__decoder__num_animation_loops(
const wuffs_wbmp__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
return 0;
}
// -------- func wbmp.decoder.num_decoded_frame_configs
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_wbmp__decoder__num_decoded_frame_configs(
const wuffs_wbmp__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
if (self->private_impl.f_call_sequence > 32) {
return 1;
}
return 0;
}
// -------- func wbmp.decoder.num_decoded_frames
WUFFS_BASE__MAYBE_STATIC uint64_t
wuffs_wbmp__decoder__num_decoded_frames(
const wuffs_wbmp__decoder* self) {
if (!self) {
return 0;
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return 0;
}
if (self->private_impl.f_call_sequence > 64) {
return 1;
}
return 0;
}
// -------- func wbmp.decoder.restart_frame
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_wbmp__decoder__restart_frame(
wuffs_wbmp__decoder* self,
uint64_t a_index,
uint64_t a_io_position) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (self->private_impl.f_call_sequence < 32) {
return wuffs_base__make_status(wuffs_base__error__bad_call_sequence);
}
if (a_index != 0) {
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
self->private_impl.f_call_sequence = 40;
self->private_impl.f_frame_config_io_position = a_io_position;
return wuffs_base__make_status(NULL);
}
// -------- func wbmp.decoder.set_report_metadata
WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct
wuffs_wbmp__decoder__set_report_metadata(
wuffs_wbmp__decoder* self,
uint32_t a_fourcc,
bool a_report) {
return wuffs_base__make_empty_struct();
}
// -------- func wbmp.decoder.tell_me_more
WUFFS_BASE__MAYBE_STATIC wuffs_base__status
wuffs_wbmp__decoder__tell_me_more(
wuffs_wbmp__decoder* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src) {
if (!self) {
return wuffs_base__make_status(wuffs_base__error__bad_receiver);
}
if (self->private_impl.magic != WUFFS_BASE__MAGIC) {
return wuffs_base__make_status(
(self->private_impl.magic == WUFFS_BASE__DISABLED)
? wuffs_base__error__disabled_by_previous_error
: wuffs_base__error__initialize_not_called);
}
if (!a_dst || !a_src) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__bad_argument);
}
if ((self->private_impl.active_coroutine != 0) &&
(self->private_impl.active_coroutine != 4)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls);
}
self->private_impl.active_coroutine = 0;
wuffs_base__status status = wuffs_base__make_status(NULL);
status = wuffs_base__make_status(wuffs_base__error__no_more_information);
goto exit;
goto ok;
ok:
goto exit;
exit:
if (wuffs_base__status__is_error(&status)) {
self->private_impl.magic = WUFFS_BASE__DISABLED;
}
return status;
}
// -------- func wbmp.decoder.workbuf_len
WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64
wuffs_wbmp__decoder__workbuf_len(
const wuffs_wbmp__decoder* self) {
if (!self) {
return wuffs_base__utility__empty_range_ii_u64();
}
if ((self->private_impl.magic != WUFFS_BASE__MAGIC) &&
(self->private_impl.magic != WUFFS_BASE__DISABLED)) {
return wuffs_base__utility__empty_range_ii_u64();
}
return wuffs_base__utility__make_range_ii_u64(0, 0);
}
#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP)
#if defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
// ---------------- Auxiliary - Base
// Auxiliary code is discussed at
// https://github.com/google/wuffs/blob/main/doc/note/auxiliary-code.md
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__AUX__BASE)
namespace wuffs_aux {
namespace sync_io {
// --------
DynIOBuffer::DynIOBuffer(uint64_t max_incl)
: m_buf(wuffs_base__empty_io_buffer()), m_max_incl(max_incl) {}
DynIOBuffer::~DynIOBuffer() {
if (m_buf.data.ptr) {
free(m_buf.data.ptr);
}
}
void //
DynIOBuffer::drop() {
if (m_buf.data.ptr) {
free(m_buf.data.ptr);
}
m_buf = wuffs_base__empty_io_buffer();
}
DynIOBuffer::GrowResult //
DynIOBuffer::grow(uint64_t min_incl) {
uint64_t n = round_up(min_incl, m_max_incl);
if (n == 0) {
return ((min_incl == 0) && (m_max_incl == 0))
? DynIOBuffer::GrowResult::OK
: DynIOBuffer::GrowResult::FailedMaxInclExceeded;
} else if (n > m_buf.data.len) {
uint8_t* ptr = static_cast<uint8_t*>(realloc(m_buf.data.ptr, n));
if (!ptr) {
return DynIOBuffer::GrowResult::FailedOutOfMemory;
}
m_buf.data.ptr = ptr;
m_buf.data.len = n;
}
return DynIOBuffer::GrowResult::OK;
}
// round_up rounds min_incl up, returning the smallest value x satisfying
// (min_incl <= x) and (x <= max_incl) and some other constraints. It returns 0
// if there is no such x.
//
// When max_incl <= 4096, the other constraints are:
// - (x == max_incl)
//
// When max_incl > 4096, the other constraints are:
// - (x == max_incl) or (x is a power of 2)
// - (x >= 4096)
uint64_t //
DynIOBuffer::round_up(uint64_t min_incl, uint64_t max_incl) {
if (min_incl > max_incl) {
return 0;
}
uint64_t n = 4096;
if (n >= max_incl) {
return max_incl;
}
while (n < min_incl) {
if (n >= (max_incl / 2)) {
return max_incl;
}
n *= 2;
}
return n;
}
// --------
Input::~Input() {}
IOBuffer* //
Input::BringsItsOwnIOBuffer() {
return nullptr;
}
// --------
FileInput::FileInput(FILE* f) : m_f(f) {}
std::string //
FileInput::CopyIn(IOBuffer* dst) {
if (!m_f) {
return "wuffs_aux::sync_io::FileInput: nullptr file";
} else if (!dst) {
return "wuffs_aux::sync_io::FileInput: nullptr IOBuffer";
} else if (dst->meta.closed) {
return "wuffs_aux::sync_io::FileInput: end of file";
} else {
dst->compact();
size_t n = fread(dst->writer_pointer(), 1, dst->writer_length(), m_f);
dst->meta.wi += n;
dst->meta.closed = feof(m_f);
if (ferror(m_f)) {
return "wuffs_aux::sync_io::FileInput: error reading file";
}
}
return "";
}
// --------
MemoryInput::MemoryInput(const char* ptr, size_t len)
: m_io(wuffs_base__ptr_u8__reader(
static_cast<uint8_t*>(static_cast<void*>(const_cast<char*>(ptr))),
len,
true)) {}
MemoryInput::MemoryInput(const uint8_t* ptr, size_t len)
: m_io(wuffs_base__ptr_u8__reader(const_cast<uint8_t*>(ptr), len, true)) {}
IOBuffer* //
MemoryInput::BringsItsOwnIOBuffer() {
return &m_io;
}
std::string //
MemoryInput::CopyIn(IOBuffer* dst) {
if (!dst) {
return "wuffs_aux::sync_io::MemoryInput: nullptr IOBuffer";
} else if (dst->meta.closed) {
return "wuffs_aux::sync_io::MemoryInput: end of file";
} else if (wuffs_base__slice_u8__overlaps(dst->data, m_io.data)) {
// Treat m_io's data as immutable, so don't compact dst or otherwise write
// to it.
return "wuffs_aux::sync_io::MemoryInput: overlapping buffers";
} else {
dst->compact();
size_t nd = dst->writer_length();
size_t ns = m_io.reader_length();
size_t n = (nd < ns) ? nd : ns;
memcpy(dst->writer_pointer(), m_io.reader_pointer(), n);
m_io.meta.ri += n;
dst->meta.wi += n;
dst->meta.closed = m_io.reader_length() == 0;
}
return "";
}
// --------
} // namespace sync_io
namespace private_impl {
struct ErrorMessages {
const char* max_incl_metadata_length_exceeded;
const char* out_of_memory;
const char* unexpected_end_of_file;
const char* unsupported_metadata;
const char* unsupported_negative_advance;
// If adding new "const char*" typed fields to this struct, either add them
// after existing fields or, if re-ordering fields, make sure that you update
// all of the "const private_impl::ErrorMessages FooBarErrorMessages" values
// in all of the sibling *.cc files.
static inline const char* resolve(const char* s) {
return s ? s : "wuffs_aux::private_impl: unknown error";
};
};
std::string //
AdvanceIOBufferTo(const ErrorMessages& error_messages,
sync_io::Input& input,
IOBuffer& io_buf,
uint64_t absolute_position) {
if (absolute_position < io_buf.reader_position()) {
return error_messages.resolve(error_messages.unsupported_negative_advance);
}
while (true) {
uint64_t relative_position = absolute_position - io_buf.reader_position();
if (relative_position <= io_buf.reader_length()) {
io_buf.meta.ri += (size_t)relative_position;
break;
} else if (io_buf.meta.closed) {
return error_messages.resolve(error_messages.unexpected_end_of_file);
}
io_buf.meta.ri = io_buf.meta.wi;
if (!input.BringsItsOwnIOBuffer()) {
io_buf.compact();
}
std::string error_message = input.CopyIn(&io_buf);
if (!error_message.empty()) {
return error_message;
}
}
return "";
}
std::string //
HandleMetadata(
const ErrorMessages& error_messages,
sync_io::Input& input,
wuffs_base__io_buffer& io_buf,
sync_io::DynIOBuffer& raw,
wuffs_base__status (*tell_me_more_func)(void*,
wuffs_base__io_buffer*,
wuffs_base__more_information*,
wuffs_base__io_buffer*),
void* tell_me_more_receiver,
std::string (*handle_metadata_func)(void*,
const wuffs_base__more_information*,
wuffs_base__slice_u8),
void* handle_metadata_receiver) {
wuffs_base__more_information minfo = wuffs_base__empty_more_information();
// Reset raw but keep its backing array (the raw.m_buf.data slice).
raw.m_buf.meta = wuffs_base__empty_io_buffer_meta();
while (true) {
minfo = wuffs_base__empty_more_information();
wuffs_base__status status = (*tell_me_more_func)(
tell_me_more_receiver, &raw.m_buf, &minfo, &io_buf);
switch (minfo.flavor) {
case 0:
case WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_TRANSFORM:
case WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_PARSED:
break;
case WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_PASSTHROUGH: {
wuffs_base__range_ie_u64 r = minfo.metadata_raw_passthrough__range();
if (r.is_empty()) {
break;
}
uint64_t num_to_copy = r.length();
if (num_to_copy > (raw.m_max_incl - raw.m_buf.meta.wi)) {
return error_messages.resolve(
error_messages.max_incl_metadata_length_exceeded);
} else if (num_to_copy > (raw.m_buf.data.len - raw.m_buf.meta.wi)) {
switch (raw.grow(num_to_copy + raw.m_buf.meta.wi)) {
case sync_io::DynIOBuffer::GrowResult::OK:
break;
case sync_io::DynIOBuffer::GrowResult::FailedMaxInclExceeded:
return error_messages.resolve(
error_messages.max_incl_metadata_length_exceeded);
case sync_io::DynIOBuffer::GrowResult::FailedOutOfMemory:
return error_messages.resolve(error_messages.out_of_memory);
}
}
if (io_buf.reader_position() > r.min_incl) {
return error_messages.resolve(error_messages.unsupported_metadata);
} else {
std::string error_message =
AdvanceIOBufferTo(error_messages, input, io_buf, r.min_incl);
if (!error_message.empty()) {
return error_message;
}
}
while (true) {
uint64_t n =
wuffs_base__u64__min(num_to_copy, io_buf.reader_length());
memcpy(raw.m_buf.writer_pointer(), io_buf.reader_pointer(), n);
raw.m_buf.meta.wi += n;
io_buf.meta.ri += n;
num_to_copy -= n;
if (num_to_copy == 0) {
break;
} else if (io_buf.meta.closed) {
return error_messages.resolve(
error_messages.unexpected_end_of_file);
} else if (!input.BringsItsOwnIOBuffer()) {
io_buf.compact();
}
std::string error_message = input.CopyIn(&io_buf);
if (!error_message.empty()) {
return error_message;
}
}
break;
}
default:
return error_messages.resolve(error_messages.unsupported_metadata);
}
if (status.repr == nullptr) {
break;
} else if (status.repr != wuffs_base__suspension__even_more_information) {
if (status.repr != wuffs_base__suspension__short_write) {
return status.message();
}
switch (raw.grow(wuffs_base__u64__sat_add(raw.m_buf.data.len, 1))) {
case sync_io::DynIOBuffer::GrowResult::OK:
break;
case sync_io::DynIOBuffer::GrowResult::FailedMaxInclExceeded:
return error_messages.resolve(
error_messages.max_incl_metadata_length_exceeded);
case sync_io::DynIOBuffer::GrowResult::FailedOutOfMemory:
return error_messages.resolve(error_messages.out_of_memory);
}
}
}
return (*handle_metadata_func)(handle_metadata_receiver, &minfo,
raw.m_buf.reader_slice());
}
} // namespace private_impl
} // namespace wuffs_aux
#endif // !defined(WUFFS_CONFIG__MODULES) ||
// defined(WUFFS_CONFIG__MODULE__AUX__BASE)
// ---------------- Auxiliary - CBOR
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__AUX__CBOR)
#include <utility>
namespace wuffs_aux {
DecodeCborResult::DecodeCborResult(std::string&& error_message0,
uint64_t cursor_position0)
: error_message(std::move(error_message0)),
cursor_position(cursor_position0) {}
DecodeCborCallbacks::~DecodeCborCallbacks() {}
void //
DecodeCborCallbacks::Done(DecodeCborResult& result,
sync_io::Input& input,
IOBuffer& buffer) {}
DecodeCborArgQuirks::DecodeCborArgQuirks(wuffs_base__slice_u32 repr0)
: repr(repr0) {}
DecodeCborArgQuirks::DecodeCborArgQuirks(uint32_t* ptr0, size_t len0)
: repr(wuffs_base__make_slice_u32(ptr0, len0)) {}
DecodeCborArgQuirks //
DecodeCborArgQuirks::DefaultValue() {
return DecodeCborArgQuirks(wuffs_base__empty_slice_u32());
}
DecodeCborResult //
DecodeCbor(DecodeCborCallbacks& callbacks,
sync_io::Input& input,
DecodeCborArgQuirks quirks) {
// Prepare the wuffs_base__io_buffer and the resultant error_message.
wuffs_base__io_buffer* io_buf = input.BringsItsOwnIOBuffer();
wuffs_base__io_buffer fallback_io_buf = wuffs_base__empty_io_buffer();
std::unique_ptr<uint8_t[]> fallback_io_array(nullptr);
if (!io_buf) {
fallback_io_array = std::unique_ptr<uint8_t[]>(new uint8_t[4096]);
fallback_io_buf = wuffs_base__ptr_u8__writer(fallback_io_array.get(), 4096);
io_buf = &fallback_io_buf;
}
// cursor_index is discussed at
// https://nigeltao.github.io/blog/2020/jsonptr.html#the-cursor-index
size_t cursor_index = 0;
std::string ret_error_message;
std::string io_error_message;
do {
// Prepare the low-level CBOR decoder.
wuffs_cbor__decoder::unique_ptr dec = wuffs_cbor__decoder::alloc();
if (!dec) {
ret_error_message = "wuffs_aux::DecodeCbor: out of memory";
goto done;
}
for (size_t i = 0; i < quirks.repr.len; i++) {
dec->set_quirk_enabled(quirks.repr.ptr[i], true);
}
// Prepare the wuffs_base__tok_buffer. 256 tokens is 2KiB.
wuffs_base__token tok_array[256];
wuffs_base__token_buffer tok_buf =
wuffs_base__slice_token__writer(wuffs_base__make_slice_token(
&tok_array[0], (sizeof(tok_array) / sizeof(tok_array[0]))));
wuffs_base__status tok_status = wuffs_base__make_status(nullptr);
// Prepare other state.
int32_t depth = 0;
std::string str;
int64_t extension_category = 0;
uint64_t extension_detail = 0;
// Valid token's VBCs range in 0 ..= 15. Values over that are for tokens
// from outside of the base package, such as the CBOR package.
constexpr int64_t EXT_CAT__CBOR_TAG = 16;
// Loop, doing these two things:
// 1. Get the next token.
// 2. Process that token.
while (true) {
// 1. Get the next token.
while (tok_buf.meta.ri >= tok_buf.meta.wi) {
if (tok_status.repr == nullptr) {
// No-op.
} else if (tok_status.repr == wuffs_base__suspension__short_write) {
tok_buf.compact();
} else if (tok_status.repr == wuffs_base__suspension__short_read) {
// Read from input to io_buf.
if (!io_error_message.empty()) {
ret_error_message = std::move(io_error_message);
goto done;
} else if (cursor_index != io_buf->meta.ri) {
ret_error_message =
"wuffs_aux::DecodeCbor: internal error: bad cursor_index";
goto done;
} else if (io_buf->meta.closed) {
ret_error_message =
"wuffs_aux::DecodeCbor: internal error: io_buf is closed";
goto done;
}
io_buf->compact();
if (io_buf->meta.wi >= io_buf->data.len) {
ret_error_message =
"wuffs_aux::DecodeCbor: internal error: io_buf is full";
goto done;
}
cursor_index = io_buf->meta.ri;
io_error_message = input.CopyIn(io_buf);
} else {
ret_error_message = tok_status.message();
goto done;
}
if (WUFFS_CBOR__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE != 0) {
ret_error_message =
"wuffs_aux::DecodeCbor: internal error: bad WORKBUF_LEN";
goto done;
}
wuffs_base__slice_u8 work_buf = wuffs_base__empty_slice_u8();
tok_status = dec->decode_tokens(&tok_buf, io_buf, work_buf);
if ((tok_buf.meta.ri > tok_buf.meta.wi) ||
(tok_buf.meta.wi > tok_buf.data.len) ||
(io_buf->meta.ri > io_buf->meta.wi) ||
(io_buf->meta.wi > io_buf->data.len)) {
ret_error_message =
"wuffs_aux::DecodeCbor: internal error: bad buffer indexes";
goto done;
}
}
wuffs_base__token token = tok_buf.data.ptr[tok_buf.meta.ri++];
uint64_t token_len = token.length();
if ((io_buf->meta.ri < cursor_index) ||
((io_buf->meta.ri - cursor_index) < token_len)) {
ret_error_message =
"wuffs_aux::DecodeCbor: internal error: bad token indexes";
goto done;
}
uint8_t* token_ptr = io_buf->data.ptr + cursor_index;
cursor_index += static_cast<size_t>(token_len);
// 2. Process that token.
uint64_t vbd = token.value_base_detail();
if (extension_category != 0) {
int64_t ext = token.value_extension();
if ((ext >= 0) && !token.continued()) {
extension_detail = (extension_detail
<< WUFFS_BASE__TOKEN__VALUE_EXTENSION__NUM_BITS) |
static_cast<uint64_t>(ext);
switch (extension_category) {
case WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED:
extension_category = 0;
ret_error_message =
callbacks.AppendI64(static_cast<int64_t>(extension_detail));
goto parsed_a_value;
case WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_UNSIGNED:
extension_category = 0;
ret_error_message = callbacks.AppendU64(extension_detail);
goto parsed_a_value;
case EXT_CAT__CBOR_TAG:
extension_category = 0;
ret_error_message = callbacks.AppendCborTag(extension_detail);
if (!ret_error_message.empty()) {
goto done;
}
continue;
}
}
ret_error_message =
"wuffs_aux::DecodeCbor: internal error: bad extended token";
goto done;
}
switch (token.value_base_category()) {
case WUFFS_BASE__TOKEN__VBC__FILLER:
continue;
case WUFFS_BASE__TOKEN__VBC__STRUCTURE: {
if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH) {
ret_error_message = callbacks.Push(static_cast<uint32_t>(vbd));
if (!ret_error_message.empty()) {
goto done;
}
depth++;
if (depth > WUFFS_CBOR__DECODER_DEPTH_MAX_INCL) {
ret_error_message =
"wuffs_aux::DecodeCbor: internal error: bad depth";
goto done;
}
continue;
}
ret_error_message = callbacks.Pop(static_cast<uint32_t>(vbd));
depth--;
if (depth < 0) {
ret_error_message =
"wuffs_aux::DecodeCbor: internal error: bad depth";
goto done;
}
goto parsed_a_value;
}
case WUFFS_BASE__TOKEN__VBC__STRING: {
if (vbd & WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP) {
// No-op.
} else if (vbd &
WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY) {
const char* ptr = // Convert from (uint8_t*).
static_cast<const char*>(static_cast<void*>(token_ptr));
str.append(ptr, static_cast<size_t>(token_len));
} else {
goto fail;
}
if (token.continued()) {
continue;
}
ret_error_message =
(vbd & WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_UTF_8)
? callbacks.AppendTextString(std::move(str))
: callbacks.AppendByteString(std::move(str));
str.clear();
goto parsed_a_value;
}
case WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT: {
uint8_t u[WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL];
size_t n = wuffs_base__utf_8__encode(
wuffs_base__make_slice_u8(
&u[0], WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL),
static_cast<uint32_t>(vbd));
const char* ptr = // Convert from (uint8_t*).
static_cast<const char*>(static_cast<void*>(&u[0]));
str.append(ptr, n);
if (token.continued()) {
continue;
}
goto fail;
}
case WUFFS_BASE__TOKEN__VBC__LITERAL: {
if (vbd & WUFFS_BASE__TOKEN__VBD__LITERAL__NULL) {
ret_error_message = callbacks.AppendNull();
} else if (vbd & WUFFS_BASE__TOKEN__VBD__LITERAL__UNDEFINED) {
ret_error_message = callbacks.AppendUndefined();
} else {
ret_error_message = callbacks.AppendBool(
vbd & WUFFS_BASE__TOKEN__VBD__LITERAL__TRUE);
}
goto parsed_a_value;
}
case WUFFS_BASE__TOKEN__VBC__NUMBER: {
const uint64_t cfp_fbbe_fifb =
WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT |
WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_BIG_ENDIAN |
WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_IGNORE_FIRST_BYTE;
if ((vbd & cfp_fbbe_fifb) == cfp_fbbe_fifb) {
double f;
switch (token_len) {
case 3:
f = wuffs_base__ieee_754_bit_representation__from_u16_to_f64(
wuffs_base__peek_u16be__no_bounds_check(token_ptr + 1));
break;
case 5:
f = wuffs_base__ieee_754_bit_representation__from_u32_to_f64(
wuffs_base__peek_u32be__no_bounds_check(token_ptr + 1));
break;
case 9:
f = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
wuffs_base__peek_u64be__no_bounds_check(token_ptr + 1));
break;
default:
goto fail;
}
ret_error_message = callbacks.AppendF64(f);
goto parsed_a_value;
}
goto fail;
}
case WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED: {
if (token.continued()) {
extension_category = WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED;
extension_detail =
static_cast<uint64_t>(token.value_base_detail__sign_extended());
continue;
}
ret_error_message =
callbacks.AppendI64(token.value_base_detail__sign_extended());
goto parsed_a_value;
}
case WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_UNSIGNED: {
if (token.continued()) {
extension_category =
WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_UNSIGNED;
extension_detail = vbd;
continue;
}
ret_error_message = callbacks.AppendU64(vbd);
goto parsed_a_value;
}
}
if (token.value_major() == WUFFS_CBOR__TOKEN_VALUE_MAJOR) {
uint64_t value_minor = token.value_minor();
if (value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__MINUS_1_MINUS_X) {
if (token_len == 9) {
ret_error_message = callbacks.AppendMinus1MinusX(
wuffs_base__peek_u64be__no_bounds_check(token_ptr + 1));
goto parsed_a_value;
}
} else if (value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__SIMPLE_VALUE) {
ret_error_message =
callbacks.AppendCborSimpleValue(static_cast<uint8_t>(
value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK));
goto parsed_a_value;
} else if (value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__TAG) {
if (token.continued()) {
extension_category = EXT_CAT__CBOR_TAG;
extension_detail =
value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK;
continue;
}
ret_error_message = callbacks.AppendCborTag(
value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK);
if (!ret_error_message.empty()) {
goto done;
}
continue;
}
}
fail:
ret_error_message =
"wuffs_aux::DecodeCbor: internal error: unexpected token";
goto done;
parsed_a_value:
if (!ret_error_message.empty() || (depth == 0)) {
goto done;
}
}
} while (false);
done:
DecodeCborResult result(
std::move(ret_error_message),
wuffs_base__u64__sat_add(io_buf->meta.pos, cursor_index));
callbacks.Done(result, input, *io_buf);
return result;
}
} // namespace wuffs_aux
#endif // !defined(WUFFS_CONFIG__MODULES) ||
// defined(WUFFS_CONFIG__MODULE__AUX__CBOR)
// ---------------- Auxiliary - Image
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__AUX__IMAGE)
#include <utility>
namespace wuffs_aux {
DecodeImageResult::DecodeImageResult(MemOwner&& pixbuf_mem_owner0,
wuffs_base__pixel_buffer pixbuf0,
std::string&& error_message0)
: pixbuf_mem_owner(std::move(pixbuf_mem_owner0)),
pixbuf(pixbuf0),
error_message(std::move(error_message0)) {}
DecodeImageResult::DecodeImageResult(std::string&& error_message0)
: pixbuf_mem_owner(nullptr, &free),
pixbuf(wuffs_base__null_pixel_buffer()),
error_message(std::move(error_message0)) {}
DecodeImageCallbacks::~DecodeImageCallbacks() {}
DecodeImageCallbacks::AllocPixbufResult::AllocPixbufResult(
MemOwner&& mem_owner0,
wuffs_base__pixel_buffer pixbuf0)
: mem_owner(std::move(mem_owner0)), pixbuf(pixbuf0), error_message("") {}
DecodeImageCallbacks::AllocPixbufResult::AllocPixbufResult(
std::string&& error_message0)
: mem_owner(nullptr, &free),
pixbuf(wuffs_base__null_pixel_buffer()),
error_message(std::move(error_message0)) {}
DecodeImageCallbacks::AllocWorkbufResult::AllocWorkbufResult(
MemOwner&& mem_owner0,
wuffs_base__slice_u8 workbuf0)
: mem_owner(std::move(mem_owner0)), workbuf(workbuf0), error_message("") {}
DecodeImageCallbacks::AllocWorkbufResult::AllocWorkbufResult(
std::string&& error_message0)
: mem_owner(nullptr, &free),
workbuf(wuffs_base__empty_slice_u8()),
error_message(std::move(error_message0)) {}
wuffs_base__image_decoder::unique_ptr //
DecodeImageCallbacks::SelectDecoder(uint32_t fourcc,
wuffs_base__slice_u8 prefix_data,
bool prefix_closed) {
switch (fourcc) {
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP)
case WUFFS_BASE__FOURCC__BMP:
return wuffs_bmp__decoder::alloc_as__wuffs_base__image_decoder();
#endif
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF)
case WUFFS_BASE__FOURCC__GIF:
return wuffs_gif__decoder::alloc_as__wuffs_base__image_decoder();
#endif
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE)
case WUFFS_BASE__FOURCC__NIE:
return wuffs_nie__decoder::alloc_as__wuffs_base__image_decoder();
#endif
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG)
case WUFFS_BASE__FOURCC__PNG: {
auto dec = wuffs_png__decoder::alloc_as__wuffs_base__image_decoder();
// Favor faster decodes over rejecting invalid checksums.
dec->set_quirk_enabled(WUFFS_BASE__QUIRK_IGNORE_CHECKSUM, true);
return dec;
}
#endif
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA)
case WUFFS_BASE__FOURCC__TGA:
return wuffs_tga__decoder::alloc_as__wuffs_base__image_decoder();
#endif
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP)
case WUFFS_BASE__FOURCC__WBMP:
return wuffs_wbmp__decoder::alloc_as__wuffs_base__image_decoder();
#endif
}
return wuffs_base__image_decoder::unique_ptr(nullptr, &free);
}
std::string //
DecodeImageCallbacks::HandleMetadata(const wuffs_base__more_information& minfo,
wuffs_base__slice_u8 raw) {
return "";
}
wuffs_base__pixel_format //
DecodeImageCallbacks::SelectPixfmt(
const wuffs_base__image_config& image_config) {
return wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL);
}
DecodeImageCallbacks::AllocPixbufResult //
DecodeImageCallbacks::AllocPixbuf(const wuffs_base__image_config& image_config,
bool allow_uninitialized_memory) {
uint32_t w = image_config.pixcfg.width();
uint32_t h = image_config.pixcfg.height();
if ((w == 0) || (h == 0)) {
return AllocPixbufResult("");
}
uint64_t len = image_config.pixcfg.pixbuf_len();
if ((len == 0) || (SIZE_MAX < len)) {
return AllocPixbufResult(DecodeImage_UnsupportedPixelConfiguration);
}
void* ptr =
allow_uninitialized_memory ? malloc((size_t)len) : calloc((size_t)len, 1);
if (!ptr) {
return AllocPixbufResult(DecodeImage_OutOfMemory);
}
wuffs_base__pixel_buffer pixbuf;
wuffs_base__status status = pixbuf.set_from_slice(
&image_config.pixcfg,
wuffs_base__make_slice_u8((uint8_t*)ptr, (size_t)len));
if (!status.is_ok()) {
free(ptr);
return AllocPixbufResult(status.message());
}
return AllocPixbufResult(MemOwner(ptr, &free), pixbuf);
}
DecodeImageCallbacks::AllocWorkbufResult //
DecodeImageCallbacks::AllocWorkbuf(wuffs_base__range_ii_u64 len_range,
bool allow_uninitialized_memory) {
uint64_t len = len_range.max_incl;
if (len == 0) {
return AllocWorkbufResult("");
} else if (SIZE_MAX < len) {
return AllocWorkbufResult(DecodeImage_OutOfMemory);
}
void* ptr =
allow_uninitialized_memory ? malloc((size_t)len) : calloc((size_t)len, 1);
if (!ptr) {
return AllocWorkbufResult(DecodeImage_OutOfMemory);
}
return AllocWorkbufResult(
MemOwner(ptr, &free),
wuffs_base__make_slice_u8((uint8_t*)ptr, (size_t)len));
}
void //
DecodeImageCallbacks::Done(
DecodeImageResult& result,
sync_io::Input& input,
IOBuffer& buffer,
wuffs_base__image_decoder::unique_ptr image_decoder) {}
const char DecodeImage_BufferIsTooShort[] = //
"wuffs_aux::DecodeImage: buffer is too short";
const char DecodeImage_MaxInclDimensionExceeded[] = //
"wuffs_aux::DecodeImage: max_incl_dimension exceeded";
const char DecodeImage_MaxInclMetadataLengthExceeded[] = //
"wuffs_aux::DecodeImage: max_incl_metadata_length exceeded";
const char DecodeImage_OutOfMemory[] = //
"wuffs_aux::DecodeImage: out of memory";
const char DecodeImage_UnexpectedEndOfFile[] = //
"wuffs_aux::DecodeImage: unexpected end of file";
const char DecodeImage_UnsupportedImageFormat[] = //
"wuffs_aux::DecodeImage: unsupported image format";
const char DecodeImage_UnsupportedMetadata[] = //
"wuffs_aux::DecodeImage: unsupported metadata";
const char DecodeImage_UnsupportedPixelBlend[] = //
"wuffs_aux::DecodeImage: unsupported pixel blend";
const char DecodeImage_UnsupportedPixelConfiguration[] = //
"wuffs_aux::DecodeImage: unsupported pixel configuration";
const char DecodeImage_UnsupportedPixelFormat[] = //
"wuffs_aux::DecodeImage: unsupported pixel format";
DecodeImageArgQuirks::DecodeImageArgQuirks(wuffs_base__slice_u32 repr0)
: repr(repr0) {}
DecodeImageArgQuirks::DecodeImageArgQuirks(uint32_t* ptr0, size_t len0)
: repr(wuffs_base__make_slice_u32(ptr0, len0)) {}
DecodeImageArgQuirks //
DecodeImageArgQuirks::DefaultValue() {
return DecodeImageArgQuirks(wuffs_base__empty_slice_u32());
}
DecodeImageArgFlags::DecodeImageArgFlags(uint64_t repr0) : repr(repr0) {}
DecodeImageArgFlags //
DecodeImageArgFlags::DefaultValue() {
return DecodeImageArgFlags(0);
}
DecodeImageArgPixelBlend::DecodeImageArgPixelBlend(
wuffs_base__pixel_blend repr0)
: repr(repr0) {}
DecodeImageArgPixelBlend //
DecodeImageArgPixelBlend::DefaultValue() {
return DecodeImageArgPixelBlend(WUFFS_BASE__PIXEL_BLEND__SRC);
}
DecodeImageArgBackgroundColor::DecodeImageArgBackgroundColor(
wuffs_base__color_u32_argb_premul repr0)
: repr(repr0) {}
DecodeImageArgBackgroundColor //
DecodeImageArgBackgroundColor::DefaultValue() {
return DecodeImageArgBackgroundColor(1);
}
DecodeImageArgMaxInclDimension::DecodeImageArgMaxInclDimension(uint32_t repr0)
: repr(repr0) {}
DecodeImageArgMaxInclDimension //
DecodeImageArgMaxInclDimension::DefaultValue() {
return DecodeImageArgMaxInclDimension(1048575);
}
DecodeImageArgMaxInclMetadataLength::DecodeImageArgMaxInclMetadataLength(
uint64_t repr0)
: repr(repr0) {}
DecodeImageArgMaxInclMetadataLength //
DecodeImageArgMaxInclMetadataLength::DefaultValue() {
return DecodeImageArgMaxInclMetadataLength(16777215);
}
// --------
namespace {
const private_impl::ErrorMessages DecodeImageErrorMessages = {
DecodeImage_MaxInclMetadataLengthExceeded, //
DecodeImage_OutOfMemory, //
DecodeImage_UnexpectedEndOfFile, //
DecodeImage_UnsupportedMetadata, //
DecodeImage_UnsupportedImageFormat, //
};
std::string //
DecodeImageAdvanceIOBufferTo(sync_io::Input& input,
wuffs_base__io_buffer& io_buf,
uint64_t absolute_position) {
return private_impl::AdvanceIOBufferTo(DecodeImageErrorMessages, input,
io_buf, absolute_position);
}
wuffs_base__status //
DIHM0(void* self,
wuffs_base__io_buffer* a_dst,
wuffs_base__more_information* a_minfo,
wuffs_base__io_buffer* a_src) {
return wuffs_base__image_decoder__tell_me_more(
static_cast<wuffs_base__image_decoder*>(self), a_dst, a_minfo, a_src);
}
std::string //
DIHM1(void* self,
const wuffs_base__more_information* minfo,
wuffs_base__slice_u8 raw) {
return static_cast<DecodeImageCallbacks*>(self)->HandleMetadata(*minfo, raw);
}
std::string //
DecodeImageHandleMetadata(wuffs_base__image_decoder::unique_ptr& image_decoder,
DecodeImageCallbacks& callbacks,
sync_io::Input& input,
wuffs_base__io_buffer& io_buf,
sync_io::DynIOBuffer& raw_metadata_buf) {
return private_impl::HandleMetadata(DecodeImageErrorMessages, input, io_buf,
raw_metadata_buf, DIHM0,
static_cast<void*>(image_decoder.get()),
DIHM1, static_cast<void*>(&callbacks));
}
DecodeImageResult //
DecodeImage0(wuffs_base__image_decoder::unique_ptr& image_decoder,
DecodeImageCallbacks& callbacks,
sync_io::Input& input,
wuffs_base__io_buffer& io_buf,
wuffs_base__slice_u32 quirks,
uint64_t flags,
wuffs_base__pixel_blend pixel_blend,
wuffs_base__color_u32_argb_premul background_color,
uint32_t max_incl_dimension,
uint64_t max_incl_metadata_length) {
// Check args.
switch (pixel_blend) {
case WUFFS_BASE__PIXEL_BLEND__SRC:
case WUFFS_BASE__PIXEL_BLEND__SRC_OVER:
break;
default:
return DecodeImageResult(DecodeImage_UnsupportedPixelBlend);
}
wuffs_base__image_config image_config = wuffs_base__null_image_config();
sync_io::DynIOBuffer raw_metadata_buf(max_incl_metadata_length);
uint64_t start_pos = io_buf.reader_position();
bool interested_in_metadata_after_the_frame = false;
bool redirected = false;
int32_t fourcc = 0;
redirect:
do {
// Determine the image format.
if (!redirected) {
while (true) {
fourcc = wuffs_base__magic_number_guess_fourcc(io_buf.reader_slice(),
io_buf.meta.closed);
if (fourcc > 0) {
break;
} else if ((fourcc == 0) && (io_buf.reader_length() >= 64)) {
// Having (fourcc == 0) means that Wuffs' built in MIME sniffer
// didn't recognize the image format. Nonetheless, custom callbacks
// may still be able to do their own MIME sniffing, for exotic image
// types. We try to give them at least 64 bytes of prefix data when
// one-shot-calling callbacks.SelectDecoder. There is no mechanism
// for the callbacks to request a longer prefix.
break;
} else if (io_buf.meta.closed || (io_buf.writer_length() == 0)) {
fourcc = 0;
break;
}
std::string error_message = input.CopyIn(&io_buf);
if (!error_message.empty()) {
return DecodeImageResult(std::move(error_message));
}
}
} else {
wuffs_base__io_buffer empty = wuffs_base__empty_io_buffer();
wuffs_base__more_information minfo = wuffs_base__empty_more_information();
wuffs_base__status tmm_status =
image_decoder->tell_me_more(&empty, &minfo, &io_buf);
if (tmm_status.repr != nullptr) {
return DecodeImageResult(tmm_status.message());
}
if (minfo.flavor != WUFFS_BASE__MORE_INFORMATION__FLAVOR__IO_REDIRECT) {
return DecodeImageResult(DecodeImage_UnsupportedImageFormat);
}
uint64_t pos = minfo.io_redirect__range().min_incl;
if (pos <= start_pos) {
// Redirects must go forward.
return DecodeImageResult(DecodeImage_UnsupportedImageFormat);
}
std::string error_message =
DecodeImageAdvanceIOBufferTo(input, io_buf, pos);
if (!error_message.empty()) {
return DecodeImageResult(std::move(error_message));
}
fourcc = (int32_t)(minfo.io_redirect__fourcc());
if (fourcc == 0) {
return DecodeImageResult(DecodeImage_UnsupportedImageFormat);
}
image_decoder.reset();
}
// Select the image decoder.
image_decoder = callbacks.SelectDecoder(
(uint32_t)fourcc, io_buf.reader_slice(), io_buf.meta.closed);
if (!image_decoder) {
return DecodeImageResult(DecodeImage_UnsupportedImageFormat);
}
// Apply quirks.
for (size_t i = 0; i < quirks.len; i++) {
image_decoder->set_quirk_enabled(quirks.ptr[i], true);
}
// Apply flags.
if (flags != 0) {
if (flags & DecodeImageArgFlags::REPORT_METADATA_CHRM) {
image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__CHRM, true);
}
if (flags & DecodeImageArgFlags::REPORT_METADATA_EXIF) {
interested_in_metadata_after_the_frame = true;
image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__EXIF, true);
}
if (flags & DecodeImageArgFlags::REPORT_METADATA_GAMA) {
image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__GAMA, true);
}
if (flags & DecodeImageArgFlags::REPORT_METADATA_ICCP) {
image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__ICCP, true);
}
if (flags & DecodeImageArgFlags::REPORT_METADATA_KVP) {
interested_in_metadata_after_the_frame = true;
image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__KVP, true);
}
if (flags & DecodeImageArgFlags::REPORT_METADATA_SRGB) {
image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__SRGB, true);
}
if (flags & DecodeImageArgFlags::REPORT_METADATA_XMP) {
interested_in_metadata_after_the_frame = true;
image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__XMP, true);
}
}
// Decode the image config.
while (true) {
wuffs_base__status id_dic_status =
image_decoder->decode_image_config(&image_config, &io_buf);
if (id_dic_status.repr == nullptr) {
break;
} else if (id_dic_status.repr == wuffs_base__note__i_o_redirect) {
if (redirected) {
return DecodeImageResult(DecodeImage_UnsupportedImageFormat);
}
redirected = true;
goto redirect;
} else if (id_dic_status.repr == wuffs_base__note__metadata_reported) {
std::string error_message = DecodeImageHandleMetadata(
image_decoder, callbacks, input, io_buf, raw_metadata_buf);
if (!error_message.empty()) {
return DecodeImageResult(std::move(error_message));
}
} else if (id_dic_status.repr != wuffs_base__suspension__short_read) {
return DecodeImageResult(id_dic_status.message());
} else if (io_buf.meta.closed) {
return DecodeImageResult(DecodeImage_UnexpectedEndOfFile);
} else {
std::string error_message = input.CopyIn(&io_buf);
if (!error_message.empty()) {
return DecodeImageResult(std::move(error_message));
}
}
}
} while (false);
if (!interested_in_metadata_after_the_frame) {
raw_metadata_buf.drop();
}
// Select the pixel format.
uint32_t w = image_config.pixcfg.width();
uint32_t h = image_config.pixcfg.height();
if ((w > max_incl_dimension) || (h > max_incl_dimension)) {
return DecodeImageResult(DecodeImage_MaxInclDimensionExceeded);
}
wuffs_base__pixel_format pixel_format = callbacks.SelectPixfmt(image_config);
if (pixel_format.repr != image_config.pixcfg.pixel_format().repr) {
switch (pixel_format.repr) {
case WUFFS_BASE__PIXEL_FORMAT__BGR_565:
case WUFFS_BASE__PIXEL_FORMAT__BGR:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE:
case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL:
case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL:
break;
default:
return DecodeImageResult(DecodeImage_UnsupportedPixelFormat);
}
image_config.pixcfg.set(pixel_format.repr,
WUFFS_BASE__PIXEL_SUBSAMPLING__NONE, w, h);
}
// Allocate the pixel buffer.
bool valid_background_color =
wuffs_base__color_u32_argb_premul__is_valid(background_color);
DecodeImageCallbacks::AllocPixbufResult alloc_pixbuf_result =
callbacks.AllocPixbuf(image_config, valid_background_color);
if (!alloc_pixbuf_result.error_message.empty()) {
return DecodeImageResult(std::move(alloc_pixbuf_result.error_message));
}
wuffs_base__pixel_buffer pixel_buffer = alloc_pixbuf_result.pixbuf;
if (valid_background_color) {
wuffs_base__status pb_scufr_status = pixel_buffer.set_color_u32_fill_rect(
pixel_buffer.pixcfg.bounds(), background_color);
if (pb_scufr_status.repr != nullptr) {
return DecodeImageResult(pb_scufr_status.message());
}
}
// Allocate the work buffer. Wuffs' decoders conventionally assume that this
// can be uninitialized memory.
wuffs_base__range_ii_u64 workbuf_len = image_decoder->workbuf_len();
DecodeImageCallbacks::AllocWorkbufResult alloc_workbuf_result =
callbacks.AllocWorkbuf(workbuf_len, true);
if (!alloc_workbuf_result.error_message.empty()) {
return DecodeImageResult(std::move(alloc_workbuf_result.error_message));
} else if (alloc_workbuf_result.workbuf.len < workbuf_len.min_incl) {
return DecodeImageResult(DecodeImage_BufferIsTooShort);
}
// Decode the frame config.
wuffs_base__frame_config frame_config = wuffs_base__null_frame_config();
while (true) {
wuffs_base__status id_dfc_status =
image_decoder->decode_frame_config(&frame_config, &io_buf);
if (id_dfc_status.repr == nullptr) {
break;
} else if (id_dfc_status.repr == wuffs_base__note__metadata_reported) {
std::string error_message = DecodeImageHandleMetadata(
image_decoder, callbacks, input, io_buf, raw_metadata_buf);
if (!error_message.empty()) {
return DecodeImageResult(std::move(error_message));
}
} else if (id_dfc_status.repr != wuffs_base__suspension__short_read) {
return DecodeImageResult(id_dfc_status.message());
} else if (io_buf.meta.closed) {
return DecodeImageResult(DecodeImage_UnexpectedEndOfFile);
} else {
std::string error_message = input.CopyIn(&io_buf);
if (!error_message.empty()) {
return DecodeImageResult(std::move(error_message));
}
}
}
// Decode the frame (the pixels).
//
// From here on, always returns the pixel_buffer. If we get this far, we can
// still display a partial image, even if we encounter an error.
std::string message("");
if ((pixel_blend == WUFFS_BASE__PIXEL_BLEND__SRC_OVER) &&
frame_config.overwrite_instead_of_blend()) {
pixel_blend = WUFFS_BASE__PIXEL_BLEND__SRC;
}
while (true) {
wuffs_base__status id_df_status =
image_decoder->decode_frame(&pixel_buffer, &io_buf, pixel_blend,
alloc_workbuf_result.workbuf, nullptr);
if (id_df_status.repr == nullptr) {
break;
} else if (id_df_status.repr != wuffs_base__suspension__short_read) {
message = id_df_status.message();
break;
} else if (io_buf.meta.closed) {
message = DecodeImage_UnexpectedEndOfFile;
break;
} else {
std::string error_message = input.CopyIn(&io_buf);
if (!error_message.empty()) {
message = std::move(error_message);
break;
}
}
}
// Decode any metadata after the frame.
if (interested_in_metadata_after_the_frame) {
while (true) {
wuffs_base__status id_dfc_status =
image_decoder->decode_frame_config(NULL, &io_buf);
if (id_dfc_status.repr == wuffs_base__note__end_of_data) {
break;
} else if (id_dfc_status.repr == nullptr) {
continue;
} else if (id_dfc_status.repr == wuffs_base__note__metadata_reported) {
std::string error_message = DecodeImageHandleMetadata(
image_decoder, callbacks, input, io_buf, raw_metadata_buf);
if (!error_message.empty()) {
return DecodeImageResult(std::move(error_message));
}
} else if (id_dfc_status.repr != wuffs_base__suspension__short_read) {
return DecodeImageResult(id_dfc_status.message());
} else if (io_buf.meta.closed) {
return DecodeImageResult(DecodeImage_UnexpectedEndOfFile);
} else {
std::string error_message = input.CopyIn(&io_buf);
if (!error_message.empty()) {
return DecodeImageResult(std::move(error_message));
}
}
}
}
return DecodeImageResult(std::move(alloc_pixbuf_result.mem_owner),
pixel_buffer, std::move(message));
}
} // namespace
DecodeImageResult //
DecodeImage(DecodeImageCallbacks& callbacks,
sync_io::Input& input,
DecodeImageArgQuirks quirks,
DecodeImageArgFlags flags,
DecodeImageArgPixelBlend pixel_blend,
DecodeImageArgBackgroundColor background_color,
DecodeImageArgMaxInclDimension max_incl_dimension,
DecodeImageArgMaxInclMetadataLength max_incl_metadata_length) {
wuffs_base__io_buffer* io_buf = input.BringsItsOwnIOBuffer();
wuffs_base__io_buffer fallback_io_buf = wuffs_base__empty_io_buffer();
std::unique_ptr<uint8_t[]> fallback_io_array(nullptr);
if (!io_buf) {
fallback_io_array = std::unique_ptr<uint8_t[]>(new uint8_t[32768]);
fallback_io_buf =
wuffs_base__ptr_u8__writer(fallback_io_array.get(), 32768);
io_buf = &fallback_io_buf;
}
wuffs_base__image_decoder::unique_ptr image_decoder(nullptr, &free);
DecodeImageResult result =
DecodeImage0(image_decoder, callbacks, input, *io_buf, quirks.repr,
flags.repr, pixel_blend.repr, background_color.repr,
max_incl_dimension.repr, max_incl_metadata_length.repr);
callbacks.Done(result, input, *io_buf, std::move(image_decoder));
return result;
}
} // namespace wuffs_aux
#endif // !defined(WUFFS_CONFIG__MODULES) ||
// defined(WUFFS_CONFIG__MODULE__AUX__IMAGE)
// ---------------- Auxiliary - JSON
#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__AUX__JSON)
#include <utility>
namespace wuffs_aux {
DecodeJsonResult::DecodeJsonResult(std::string&& error_message0,
uint64_t cursor_position0)
: error_message(std::move(error_message0)),
cursor_position(cursor_position0) {}
DecodeJsonCallbacks::~DecodeJsonCallbacks() {}
void //
DecodeJsonCallbacks::Done(DecodeJsonResult& result,
sync_io::Input& input,
IOBuffer& buffer) {}
const char DecodeJson_BadJsonPointer[] = //
"wuffs_aux::DecodeJson: bad JSON Pointer";
const char DecodeJson_NoMatch[] = //
"wuffs_aux::DecodeJson: no match";
DecodeJsonArgQuirks::DecodeJsonArgQuirks(wuffs_base__slice_u32 repr0)
: repr(repr0) {}
DecodeJsonArgQuirks::DecodeJsonArgQuirks(uint32_t* ptr0, size_t len0)
: repr(wuffs_base__make_slice_u32(ptr0, len0)) {}
DecodeJsonArgQuirks //
DecodeJsonArgQuirks::DefaultValue() {
return DecodeJsonArgQuirks(wuffs_base__empty_slice_u32());
}
DecodeJsonArgJsonPointer::DecodeJsonArgJsonPointer(std::string repr0)
: repr(repr0) {}
DecodeJsonArgJsonPointer //
DecodeJsonArgJsonPointer::DefaultValue() {
return DecodeJsonArgJsonPointer(std::string());
}
// --------
#define WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN \
while (tok_buf.meta.ri >= tok_buf.meta.wi) { \
if (tok_status.repr == nullptr) { \
goto done; \
} else if (tok_status.repr == wuffs_base__suspension__short_write) { \
tok_buf.compact(); \
} else if (tok_status.repr == wuffs_base__suspension__short_read) { \
if (!io_error_message.empty()) { \
ret_error_message = std::move(io_error_message); \
goto done; \
} else if (cursor_index != io_buf->meta.ri) { \
ret_error_message = \
"wuffs_aux::DecodeJson: internal error: bad cursor_index"; \
goto done; \
} else if (io_buf->meta.closed) { \
ret_error_message = \
"wuffs_aux::DecodeJson: internal error: io_buf is closed"; \
goto done; \
} \
io_buf->compact(); \
if (io_buf->meta.wi >= io_buf->data.len) { \
ret_error_message = \
"wuffs_aux::DecodeJson: internal error: io_buf is full"; \
goto done; \
} \
cursor_index = io_buf->meta.ri; \
io_error_message = input.CopyIn(io_buf); \
} else { \
ret_error_message = tok_status.message(); \
goto done; \
} \
tok_status = \
dec->decode_tokens(&tok_buf, io_buf, wuffs_base__empty_slice_u8()); \
if ((tok_buf.meta.ri > tok_buf.meta.wi) || \
(tok_buf.meta.wi > tok_buf.data.len) || \
(io_buf->meta.ri > io_buf->meta.wi) || \
(io_buf->meta.wi > io_buf->data.len)) { \
ret_error_message = \
"wuffs_aux::DecodeJson: internal error: bad buffer indexes"; \
goto done; \
} \
} \
wuffs_base__token token = tok_buf.data.ptr[tok_buf.meta.ri++]; \
uint64_t token_len = token.length(); \
if ((io_buf->meta.ri < cursor_index) || \
((io_buf->meta.ri - cursor_index) < token_len)) { \
ret_error_message = \
"wuffs_aux::DecodeJson: internal error: bad token indexes"; \
goto done; \
} \
uint8_t* token_ptr = io_buf->data.ptr + cursor_index; \
(void)(token_ptr); \
cursor_index += static_cast<size_t>(token_len)
// --------
namespace {
// DecodeJson_SplitJsonPointer returns ("bar", 8) for ("/foo/bar/b~1z/qux", 5,
// etc). It returns a 0 size_t when s has invalid JSON Pointer syntax or i is
// out of bounds.
//
// The string returned is unescaped. If calling it again, this time with i=8,
// the "b~1z" substring would be returned as "b/z".
std::pair<std::string, size_t> //
DecodeJson_SplitJsonPointer(std::string& s,
size_t i,
bool allow_tilde_n_tilde_r_tilde_t) {
std::string fragment;
if (i > s.size()) {
return std::make_pair(std::string(), 0);
}
while (i < s.size()) {
char c = s[i];
if (c == '/') {
break;
} else if (c != '~') {
fragment.push_back(c);
i++;
continue;
}
i++;
if (i >= s.size()) {
return std::make_pair(std::string(), 0);
}
c = s[i];
if (c == '0') {
fragment.push_back('~');
i++;
continue;
} else if (c == '1') {
fragment.push_back('/');
i++;
continue;
} else if (allow_tilde_n_tilde_r_tilde_t) {
if (c == 'n') {
fragment.push_back('\n');
i++;
continue;
} else if (c == 'r') {
fragment.push_back('\r');
i++;
continue;
} else if (c == 't') {
fragment.push_back('\t');
i++;
continue;
}
}
return std::make_pair(std::string(), 0);
}
return std::make_pair(std::move(fragment), i);
}
// --------
std::string //
DecodeJson_WalkJsonPointerFragment(wuffs_base__token_buffer& tok_buf,
wuffs_base__status& tok_status,
wuffs_json__decoder::unique_ptr& dec,
wuffs_base__io_buffer* io_buf,
std::string& io_error_message,
size_t& cursor_index,
sync_io::Input& input,
std::string& json_pointer_fragment) {
std::string ret_error_message;
while (true) {
WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN;
int64_t vbc = token.value_base_category();
uint64_t vbd = token.value_base_detail();
if (vbc == WUFFS_BASE__TOKEN__VBC__FILLER) {
continue;
} else if ((vbc != WUFFS_BASE__TOKEN__VBC__STRUCTURE) ||
!(vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH)) {
return DecodeJson_NoMatch;
} else if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST) {
goto do_list;
}
goto do_dict;
}
do_dict:
// Alternate between these two things:
// 1. Decode the next dict key (a string). If it matches the fragment, we're
// done (success). If we've reached the dict's end (VBD__STRUCTURE__POP)
// so that there was no next dict key, we're done (failure).
// 2. Otherwise, skip the next dict value.
while (true) {
for (std::string str; true;) {
WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN;
int64_t vbc = token.value_base_category();
uint64_t vbd = token.value_base_detail();
switch (vbc) {
case WUFFS_BASE__TOKEN__VBC__FILLER:
continue;
case WUFFS_BASE__TOKEN__VBC__STRUCTURE:
if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH) {
goto fail;
}
return DecodeJson_NoMatch;
case WUFFS_BASE__TOKEN__VBC__STRING: {
if (vbd & WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP) {
// No-op.
} else if (vbd &
WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY) {
const char* ptr = // Convert from (uint8_t*).
static_cast<const char*>(static_cast<void*>(token_ptr));
str.append(ptr, static_cast<size_t>(token_len));
} else {
goto fail;
}
break;
}
case WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT: {
uint8_t u[WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL];
size_t n = wuffs_base__utf_8__encode(
wuffs_base__make_slice_u8(
&u[0], WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL),
static_cast<uint32_t>(vbd));
const char* ptr = // Convert from (uint8_t*).
static_cast<const char*>(static_cast<void*>(&u[0]));
str.append(ptr, n);
break;
}
default:
goto fail;
}
if (token.continued()) {
continue;
}
if (str == json_pointer_fragment) {
return "";
}
goto skip_the_next_dict_value;
}
skip_the_next_dict_value:
for (uint32_t skip_depth = 0; true;) {
WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN;
int64_t vbc = token.value_base_category();
uint64_t vbd = token.value_base_detail();
if (token.continued() || (vbc == WUFFS_BASE__TOKEN__VBC__FILLER)) {
continue;
} else if (vbc == WUFFS_BASE__TOKEN__VBC__STRUCTURE) {
if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH) {
skip_depth++;
continue;
}
skip_depth--;
}
if (skip_depth == 0) {
break;
}
} // skip_the_next_dict_value
} // do_dict
do_list:
do {
wuffs_base__result_u64 result_u64 = wuffs_base__parse_number_u64(
wuffs_base__make_slice_u8(
static_cast<uint8_t*>(static_cast<void*>(
const_cast<char*>(json_pointer_fragment.data()))),
json_pointer_fragment.size()),
WUFFS_BASE__PARSE_NUMBER_XXX__DEFAULT_OPTIONS);
if (!result_u64.status.is_ok()) {
return DecodeJson_NoMatch;
}
uint64_t remaining = result_u64.value;
if (remaining == 0) {
goto check_that_a_value_follows;
}
for (uint32_t skip_depth = 0; true;) {
WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN;
int64_t vbc = token.value_base_category();
uint64_t vbd = token.value_base_detail();
if (token.continued() || (vbc == WUFFS_BASE__TOKEN__VBC__FILLER)) {
continue;
} else if (vbc == WUFFS_BASE__TOKEN__VBC__STRUCTURE) {
if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH) {
skip_depth++;
continue;
}
if (skip_depth == 0) {
return DecodeJson_NoMatch;
}
skip_depth--;
}
if (skip_depth > 0) {
continue;
}
remaining--;
if (remaining == 0) {
goto check_that_a_value_follows;
}
}
} while (false); // do_list
check_that_a_value_follows:
while (true) {
WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN;
int64_t vbc = token.value_base_category();
uint64_t vbd = token.value_base_detail();
if (vbc == WUFFS_BASE__TOKEN__VBC__FILLER) {
continue;
}
// Undo the last part of WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN, so
// that we're only peeking at the next token.
tok_buf.meta.ri--;
cursor_index -= static_cast<size_t>(token_len);
if ((vbc == WUFFS_BASE__TOKEN__VBC__STRUCTURE) &&
(vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__POP)) {
return DecodeJson_NoMatch;
}
return "";
} // check_that_a_value_follows
fail:
return "wuffs_aux::DecodeJson: internal error: unexpected token";
done:
return ret_error_message;
}
} // namespace
// --------
DecodeJsonResult //
DecodeJson(DecodeJsonCallbacks& callbacks,
sync_io::Input& input,
DecodeJsonArgQuirks quirks,
DecodeJsonArgJsonPointer json_pointer) {
// Prepare the wuffs_base__io_buffer and the resultant error_message.
wuffs_base__io_buffer* io_buf = input.BringsItsOwnIOBuffer();
wuffs_base__io_buffer fallback_io_buf = wuffs_base__empty_io_buffer();
std::unique_ptr<uint8_t[]> fallback_io_array(nullptr);
if (!io_buf) {
fallback_io_array = std::unique_ptr<uint8_t[]>(new uint8_t[4096]);
fallback_io_buf = wuffs_base__ptr_u8__writer(fallback_io_array.get(), 4096);
io_buf = &fallback_io_buf;
}
// cursor_index is discussed at
// https://nigeltao.github.io/blog/2020/jsonptr.html#the-cursor-index
size_t cursor_index = 0;
std::string ret_error_message;
std::string io_error_message;
do {
// Prepare the low-level JSON decoder.
wuffs_json__decoder::unique_ptr dec = wuffs_json__decoder::alloc();
if (!dec) {
ret_error_message = "wuffs_aux::DecodeJson: out of memory";
goto done;
} else if (WUFFS_JSON__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE != 0) {
ret_error_message =
"wuffs_aux::DecodeJson: internal error: bad WORKBUF_LEN";
goto done;
}
bool allow_tilde_n_tilde_r_tilde_t = false;
for (size_t i = 0; i < quirks.repr.len; i++) {
dec->set_quirk_enabled(quirks.repr.ptr[i], true);
if (quirks.repr.ptr[i] ==
WUFFS_JSON__QUIRK_JSON_POINTER_ALLOW_TILDE_N_TILDE_R_TILDE_T) {
allow_tilde_n_tilde_r_tilde_t = true;
}
}
// Prepare the wuffs_base__tok_buffer. 256 tokens is 2KiB.
wuffs_base__token tok_array[256];
wuffs_base__token_buffer tok_buf =
wuffs_base__slice_token__writer(wuffs_base__make_slice_token(
&tok_array[0], (sizeof(tok_array) / sizeof(tok_array[0]))));
wuffs_base__status tok_status =
dec->decode_tokens(&tok_buf, io_buf, wuffs_base__empty_slice_u8());
// Prepare other state.
int32_t depth = 0;
std::string str;
// Walk the (optional) JSON Pointer.
for (size_t i = 0; i < json_pointer.repr.size();) {
if (json_pointer.repr[i] != '/') {
ret_error_message = DecodeJson_BadJsonPointer;
goto done;
}
std::pair<std::string, size_t> split = DecodeJson_SplitJsonPointer(
json_pointer.repr, i + 1, allow_tilde_n_tilde_r_tilde_t);
i = split.second;
if (i == 0) {
ret_error_message = DecodeJson_BadJsonPointer;
goto done;
}
ret_error_message = DecodeJson_WalkJsonPointerFragment(
tok_buf, tok_status, dec, io_buf, io_error_message, cursor_index,
input, split.first);
if (!ret_error_message.empty()) {
goto done;
}
}
// Loop, doing these two things:
// 1. Get the next token.
// 2. Process that token.
while (true) {
WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN;
int64_t vbc = token.value_base_category();
uint64_t vbd = token.value_base_detail();
switch (vbc) {
case WUFFS_BASE__TOKEN__VBC__FILLER:
continue;
case WUFFS_BASE__TOKEN__VBC__STRUCTURE: {
if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH) {
ret_error_message = callbacks.Push(static_cast<uint32_t>(vbd));
if (!ret_error_message.empty()) {
goto done;
}
depth++;
if (depth > WUFFS_JSON__DECODER_DEPTH_MAX_INCL) {
ret_error_message =
"wuffs_aux::DecodeJson: internal error: bad depth";
goto done;
}
continue;
}
ret_error_message = callbacks.Pop(static_cast<uint32_t>(vbd));
depth--;
if (depth < 0) {
ret_error_message =
"wuffs_aux::DecodeJson: internal error: bad depth";
goto done;
}
goto parsed_a_value;
}
case WUFFS_BASE__TOKEN__VBC__STRING: {
if (vbd & WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP) {
// No-op.
} else if (vbd &
WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY) {
const char* ptr = // Convert from (uint8_t*).
static_cast<const char*>(static_cast<void*>(token_ptr));
str.append(ptr, static_cast<size_t>(token_len));
} else {
goto fail;
}
if (token.continued()) {
continue;
}
ret_error_message = callbacks.AppendTextString(std::move(str));
str.clear();
goto parsed_a_value;
}
case WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT: {
uint8_t u[WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL];
size_t n = wuffs_base__utf_8__encode(
wuffs_base__make_slice_u8(
&u[0], WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL),
static_cast<uint32_t>(vbd));
const char* ptr = // Convert from (uint8_t*).
static_cast<const char*>(static_cast<void*>(&u[0]));
str.append(ptr, n);
if (token.continued()) {
continue;
}
goto fail;
}
case WUFFS_BASE__TOKEN__VBC__LITERAL: {
ret_error_message =
(vbd & WUFFS_BASE__TOKEN__VBD__LITERAL__NULL)
? callbacks.AppendNull()
: callbacks.AppendBool(vbd &
WUFFS_BASE__TOKEN__VBD__LITERAL__TRUE);
goto parsed_a_value;
}
case WUFFS_BASE__TOKEN__VBC__NUMBER: {
if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_TEXT) {
if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_SIGNED) {
wuffs_base__result_i64 r = wuffs_base__parse_number_i64(
wuffs_base__make_slice_u8(token_ptr,
static_cast<size_t>(token_len)),
WUFFS_BASE__PARSE_NUMBER_XXX__DEFAULT_OPTIONS);
if (r.status.is_ok()) {
ret_error_message = callbacks.AppendI64(r.value);
goto parsed_a_value;
}
}
if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT) {
wuffs_base__result_f64 r = wuffs_base__parse_number_f64(
wuffs_base__make_slice_u8(token_ptr,
static_cast<size_t>(token_len)),
WUFFS_BASE__PARSE_NUMBER_XXX__DEFAULT_OPTIONS);
if (r.status.is_ok()) {
ret_error_message = callbacks.AppendF64(r.value);
goto parsed_a_value;
}
}
} else if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_INF) {
ret_error_message = callbacks.AppendF64(
wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
0xFFF0000000000000ul));
goto parsed_a_value;
} else if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_POS_INF) {
ret_error_message = callbacks.AppendF64(
wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
0x7FF0000000000000ul));
goto parsed_a_value;
} else if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_NAN) {
ret_error_message = callbacks.AppendF64(
wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
0xFFFFFFFFFFFFFFFFul));
goto parsed_a_value;
} else if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_POS_NAN) {
ret_error_message = callbacks.AppendF64(
wuffs_base__ieee_754_bit_representation__from_u64_to_f64(
0x7FFFFFFFFFFFFFFFul));
goto parsed_a_value;
}
goto fail;
}
}
fail:
ret_error_message =
"wuffs_aux::DecodeJson: internal error: unexpected token";
goto done;
parsed_a_value:
// If an error was encountered, we are done. Otherwise, (depth == 0)
// after parsing a value is equivalent to having decoded the entire JSON
// value (for an empty json_pointer query) or having decoded the
// pointed-to JSON value (for a non-empty json_pointer query). In the
// latter case, we are also done.
//
// However, if quirks like WUFFS_JSON__QUIRK_ALLOW_TRAILING_FILLER or
// WUFFS_JSON__QUIRK_EXPECT_TRAILING_NEW_LINE_OR_EOF are passed, decoding
// the entire JSON value should also consume any trailing filler, in case
// the DecodeJson caller wants to subsequently check that the input is
// completely exhausted (and otherwise raise "valid JSON followed by
// further (unexpected) data"). We aren't done yet. Instead, keep the
// loop running until WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN's
// decode_tokens returns an ok status.
if (!ret_error_message.empty() ||
((depth == 0) && !json_pointer.repr.empty())) {
goto done;
}
}
} while (false);
done:
DecodeJsonResult result(
std::move(ret_error_message),
wuffs_base__u64__sat_add(io_buf->meta.pos, cursor_index));
callbacks.Done(result, input, *io_buf);
return result;
}
#undef WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN
} // namespace wuffs_aux
#endif // !defined(WUFFS_CONFIG__MODULES) ||
// defined(WUFFS_CONFIG__MODULE__AUX__JSON)
#endif // defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR)
#endif // WUFFS_IMPLEMENTATION
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#elif defined(__clang__)
#pragma clang diagnostic pop
#endif
#endif // WUFFS_INCLUDE_GUARD