| // Copyright 2020 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. |
| |
| // ---------------- |
| |
| /* |
| This test program is typically run indirectly, by the "wuffs test" or "wuffs |
| bench" commands. These commands take an optional "-mimic" flag to check that |
| Wuffs' output mimics (i.e. exactly matches) other libraries' output, such as |
| giflib for GIF, libpng for PNG, etc. |
| |
| To manually run this test: |
| |
| for CC in clang gcc; do |
| $CC -std=c99 -Wall -Werror png.c && ./a.out |
| rm -f a.out |
| done |
| |
| Each edition should print "PASS", amongst other information, and exit(0). |
| |
| Add the "wuffs mimic cflags" (everything after the colon below) to the C |
| compiler flags (after the .c file) to run the mimic tests. |
| |
| To manually run the benchmarks, replace "-Wall -Werror" with "-O3" and replace |
| the first "./a.out" with "./a.out -bench". Combine these changes with the |
| "wuffs mimic cflags" to run the mimic benchmarks. |
| */ |
| |
| // Libpng requires -lpng (and nothing else). Libspng (note the 's') requires |
| // -lm and -lz (and nothing else). It's easiest to just link with the union of |
| // all of these libraries. |
| // |
| // ¿ wuffs mimic cflags: -DWUFFS_MIMIC -lm -lpng -lz |
| |
| // 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. |
| #define WUFFS_IMPLEMENTATION |
| |
| // Defining the WUFFS_CONFIG__MODULE* macros are optional, but it lets users of |
| // release/c/etc.c choose which parts of Wuffs to build. That file contains the |
| // entire Wuffs standard library, implementing a variety of codecs and file |
| // formats. Without this macro definition, an optimizing compiler or linker may |
| // very well discard Wuffs code for unused codecs, but listing the Wuffs |
| // modules we use makes that process explicit. Preprocessing means that such |
| // code simply isn't compiled. |
| #define WUFFS_CONFIG__MODULES |
| #define WUFFS_CONFIG__MODULE__ADLER32 |
| #define WUFFS_CONFIG__MODULE__BASE |
| #define WUFFS_CONFIG__MODULE__CRC32 |
| #define WUFFS_CONFIG__MODULE__DEFLATE |
| #define WUFFS_CONFIG__MODULE__PNG |
| #define WUFFS_CONFIG__MODULE__ZLIB |
| |
| // If building this program in an environment that doesn't easily accommodate |
| // relative includes, you can use the script/inline-c-relative-includes.go |
| // program to generate a stand-alone C file. |
| #include "../../../release/c/wuffs-unsupported-snapshot.c" |
| #include "../testlib/testlib.c" |
| #ifdef WUFFS_MIMIC |
| #include "../mimiclib/png.c" |
| #endif |
| |
| // ---------------- PNG Tests |
| |
| const char* // |
| wuffs_png_decode(uint64_t* n_bytes_out, |
| wuffs_base__io_buffer* dst, |
| uint32_t wuffs_initialize_flags, |
| wuffs_base__pixel_format pixfmt, |
| uint32_t* quirks_ptr, |
| size_t quirks_len, |
| wuffs_base__io_buffer* src) { |
| wuffs_png__decoder dec; |
| CHECK_STATUS("initialize", |
| wuffs_png__decoder__initialize(&dec, sizeof dec, WUFFS_VERSION, |
| wuffs_initialize_flags)); |
| return do_run__wuffs_base__image_decoder( |
| wuffs_png__decoder__upcast_as__wuffs_base__image_decoder(&dec), |
| n_bytes_out, dst, pixfmt, quirks_ptr, quirks_len, src); |
| } |
| |
| const char* // |
| do_test_xxxxx_png_decode_bad_crc32_checksum_critical( |
| const char* (*decode_func)(uint64_t* n_bytes_out, |
| wuffs_base__io_buffer* dst, |
| uint32_t wuffs_initialize_flags, |
| wuffs_base__pixel_format pixfmt, |
| uint32_t* quirks_ptr, |
| size_t quirks_len, |
| wuffs_base__io_buffer* src)) { |
| const char* test_cases[] = { |
| // Change a byte in the IHDR CRC-32 checksum. |
| "@001F=8A=00;test/data/hippopotamus.regular.png", |
| // Change a byte in a PLTE CRC-32 checksum. |
| "@0372=52=00;test/data/bricks-dither.png", |
| // Change a byte in a non-final IDAT CRC-32 checksum. |
| "@2029=B7=00;test/data/bricks-color.png", |
| #ifndef WUFFS_MIMICLIB_PNG_DOES_NOT_VERIFY_FINAL_IDAT_CHECKSUMS |
| // Change a byte in a final IDAT Adler-32 checksum. |
| "@084E=26=00;test/data/hippopotamus.regular.png", |
| // Change a byte in a final IDAT CRC-32 checksum. |
| "@084F=F4=00;test/data/hippopotamus.regular.png", |
| #endif |
| }; |
| |
| for (size_t tc = 0; tc < WUFFS_TESTLIB_ARRAY_SIZE(test_cases); tc++) { |
| wuffs_base__io_buffer src = ((wuffs_base__io_buffer){ |
| .data = g_src_slice_u8, |
| }); |
| CHECK_STRING(read_file(&src, test_cases[tc])); |
| |
| wuffs_base__io_buffer have = ((wuffs_base__io_buffer){ |
| .data = g_have_slice_u8, |
| }); |
| if (NULL == (*decode_func)(NULL, &have, WUFFS_INITIALIZE__DEFAULT_OPTIONS, |
| wuffs_base__make_pixel_format( |
| WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL), |
| NULL, 0, &src)) { |
| RETURN_FAIL("tc=%zu (filename=\"%s\"): bad checksum not rejected", tc, |
| test_cases[tc]); |
| } |
| } |
| return NULL; |
| } |
| |
| const char* // |
| do_wuffs_png_swizzle(uint32_t width, |
| uint32_t height, |
| uint8_t filter_distance, |
| wuffs_base__slice_u8 dst, |
| wuffs_base__slice_u8 workbuf) { |
| wuffs_png__decoder dec; |
| CHECK_STATUS("initialize", wuffs_png__decoder__initialize( |
| &dec, sizeof dec, WUFFS_VERSION, |
| WUFFS_INITIALIZE__DEFAULT_OPTIONS)); |
| dec.private_impl.f_frame_rect_x0 = 0; |
| dec.private_impl.f_frame_rect_y0 = 0; |
| dec.private_impl.f_frame_rect_x1 = width; |
| dec.private_impl.f_frame_rect_y1 = height; |
| dec.private_impl.f_width = width; |
| dec.private_impl.f_height = height; |
| dec.private_impl.f_pass_bytes_per_row = width; |
| dec.private_impl.f_filter_distance = filter_distance; |
| wuffs_png__decoder__choose_filter_implementations(&dec); |
| |
| CHECK_STATUS("prepare", |
| wuffs_base__pixel_swizzler__prepare( |
| &dec.private_impl.f_swizzler, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__Y), |
| wuffs_base__empty_slice_u8(), |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__Y), |
| wuffs_base__empty_slice_u8(), WUFFS_BASE__PIXEL_BLEND__SRC)); |
| |
| wuffs_base__pixel_config pc = ((wuffs_base__pixel_config){}); |
| wuffs_base__pixel_config__set(&pc, WUFFS_BASE__PIXEL_FORMAT__Y, |
| WUFFS_BASE__PIXEL_SUBSAMPLING__NONE, width, |
| height); |
| wuffs_base__pixel_buffer pb = ((wuffs_base__pixel_buffer){}); |
| |
| CHECK_STATUS("set_from_slice", |
| wuffs_base__pixel_buffer__set_from_slice(&pb, &pc, dst)); |
| CHECK_STATUS("filter_and_swizzle", |
| wuffs_png__decoder__filter_and_swizzle(&dec, &pb, workbuf)); |
| return NULL; |
| } |
| |
| // -------- |
| |
| const char* // |
| test_wuffs_png_decode_interface() { |
| CHECK_FOCUS(__func__); |
| wuffs_png__decoder dec; |
| CHECK_STATUS("initialize", |
| wuffs_png__decoder__initialize( |
| &dec, sizeof dec, WUFFS_VERSION, |
| WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); |
| return do_test__wuffs_base__image_decoder( |
| wuffs_png__decoder__upcast_as__wuffs_base__image_decoder(&dec), |
| "test/data/bricks-gray.png", 0, SIZE_MAX, 160, 120, 0xFF060606); |
| } |
| |
| const char* // |
| test_wuffs_png_decode_bad_crc32_checksum_critical() { |
| CHECK_FOCUS(__func__); |
| return do_test_xxxxx_png_decode_bad_crc32_checksum_critical( |
| &wuffs_png_decode); |
| } |
| |
| const char* // |
| test_wuffs_png_decode_filters_golden() { |
| CHECK_FOCUS(__func__); |
| |
| uint8_t src_rows[2][12] = { |
| // "WhatsInAName". |
| {0x57, 0x68, 0x61, 0x74, 0x73, 0x49, 0x6E, 0x41, 0x4E, 0x61, 0x6D, 0x65}, |
| // "SmellAsSweet". |
| {0x53, 0x6D, 0x65, 0x6C, 0x6C, 0x41, 0x73, 0x53, 0x77, 0x65, 0x65, 0x74}, |
| }; |
| |
| uint8_t want_rows[4 * 4 * 2][12] = { |
| // Sub:1. |
| {0x57, 0xBF, 0x20, 0x94, 0x07, 0x50, 0xBE, 0xFF, 0x4D, 0xAE, 0x1B, 0x80}, |
| {0x53, 0xC0, 0x25, 0x91, 0xFD, 0x3E, 0xB1, 0x04, 0x7B, 0xE0, 0x45, 0xB9}, |
| // Sub:2. |
| {0x57, 0x68, 0xB8, 0xDC, 0x2B, 0x25, 0x99, 0x66, 0xE7, 0xC7, 0x54, 0x2C}, |
| {0x53, 0x6D, 0xB8, 0xD9, 0x24, 0x1A, 0x97, 0x6D, 0x0E, 0xD2, 0x73, 0x46}, |
| // Sub:3. |
| {0x57, 0x68, 0x61, 0xCB, 0xDB, 0xAA, 0x39, 0x1C, 0xF8, 0x9A, 0x89, 0x5D}, |
| {0x53, 0x6D, 0x65, 0xBF, 0xD9, 0xA6, 0x32, 0x2C, 0x1D, 0x97, 0x91, 0x91}, |
| // Sub:4. |
| {0x57, 0x68, 0x61, 0x74, 0xCA, 0xB1, 0xCF, 0xB5, 0x18, 0x12, 0x3C, 0x1A}, |
| {0x53, 0x6D, 0x65, 0x6C, 0xBF, 0xAE, 0xD8, 0xBF, 0x36, 0x13, 0x3D, 0x33}, |
| // Up:1. |
| {0x57, 0x68, 0x61, 0x74, 0x73, 0x49, 0x6E, 0x41, 0x4E, 0x61, 0x6D, 0x65}, |
| {0xAA, 0xD5, 0xC6, 0xE0, 0xDF, 0x8A, 0xE1, 0x94, 0xC5, 0xC6, 0xD2, 0xD9}, |
| // Up:2. |
| {0x57, 0x68, 0x61, 0x74, 0x73, 0x49, 0x6E, 0x41, 0x4E, 0x61, 0x6D, 0x65}, |
| {0xAA, 0xD5, 0xC6, 0xE0, 0xDF, 0x8A, 0xE1, 0x94, 0xC5, 0xC6, 0xD2, 0xD9}, |
| // Up:3. |
| {0x57, 0x68, 0x61, 0x74, 0x73, 0x49, 0x6E, 0x41, 0x4E, 0x61, 0x6D, 0x65}, |
| {0xAA, 0xD5, 0xC6, 0xE0, 0xDF, 0x8A, 0xE1, 0x94, 0xC5, 0xC6, 0xD2, 0xD9}, |
| // Up:4. |
| {0x57, 0x68, 0x61, 0x74, 0x73, 0x49, 0x6E, 0x41, 0x4E, 0x61, 0x6D, 0x65}, |
| {0xAA, 0xD5, 0xC6, 0xE0, 0xDF, 0x8A, 0xE1, 0x94, 0xC5, 0xC6, 0xD2, 0xD9}, |
| // Average:1. |
| {0x57, 0x93, 0xAA, 0xC9, 0xD7, 0xB4, 0xC8, 0xA5, 0xA0, 0xB1, 0xC5, 0xC7}, |
| {0x7E, 0xF5, 0x34, 0xEA, 0x4C, 0xC1, 0x37, 0xC1, 0x27, 0xD1, 0x30, 0xEF}, |
| // Average:2. |
| {0x57, 0x68, 0x8C, 0xA8, 0xB9, 0x9D, 0xCA, 0x8F, 0xB3, 0xA8, 0xC6, 0xB9}, |
| {0x7E, 0xA1, 0xEA, 0x10, 0x3D, 0x97, 0xF6, 0xE6, 0x4B, 0x2C, 0xED, 0xE6}, |
| // Average:3. |
| {0x57, 0x68, 0x61, 0x9F, 0xA7, 0x79, 0xBD, 0x94, 0x8A, 0xBF, 0xB7, 0xAA}, |
| {0x7E, 0xA1, 0x95, 0xFA, 0x10, 0xC8, 0x4E, 0xA5, 0x20, 0xEB, 0x13, 0xD9}, |
| // Average:4. |
| {0x57, 0x68, 0x61, 0x74, 0x9E, 0x7D, 0x9E, 0x7B, 0x9D, 0x9F, 0xBC, 0xA2}, |
| {0x7E, 0xA1, 0x95, 0xA6, 0xFA, 0xD0, 0x0C, 0xE3, 0x42, 0x1C, 0xC9, 0x36}, |
| // Paeth:1. |
| {0x57, 0xBF, 0x20, 0x94, 0x07, 0x50, 0xBE, 0xFF, 0x4D, 0xAE, 0x1B, 0x80}, |
| {0xAA, 0x2C, 0x85, 0x00, 0x6C, 0xAD, 0x31, 0x84, 0xC4, 0x29, 0x80, 0xF4}, |
| // Paeth:2. |
| {0x57, 0x68, 0xB8, 0xDC, 0x2B, 0x25, 0x99, 0x66, 0xE7, 0xC7, 0x54, 0x2C}, |
| {0xAA, 0xD5, 0x1D, 0x48, 0x89, 0x66, 0x0C, 0xB9, 0x10, 0x2C, 0x75, 0xA0}, |
| // Paeth:3. |
| {0x57, 0x68, 0x61, 0xCB, 0xDB, 0xAA, 0x39, 0x1C, 0xF8, 0x9A, 0x89, 0x5D}, |
| {0xAA, 0xD5, 0xC6, 0x37, 0x47, 0x07, 0xAA, 0x6F, 0x7E, 0x0F, 0xEE, 0xD1}, |
| // Paeth:4. |
| {0x57, 0x68, 0x61, 0x74, 0xCA, 0xB1, 0xCF, 0xB5, 0x18, 0x12, 0x3C, 0x1A}, |
| {0xAA, 0xD5, 0xC6, 0xE0, 0x36, 0x16, 0x42, 0x33, 0x8F, 0x77, 0xA1, 0x8E}, |
| }; |
| |
| int filter; |
| for (filter = 1; filter <= 4; filter++) { |
| int filter_distance; |
| for (filter_distance = 1; filter_distance <= 4; filter_distance++) { |
| // For the top row, the Paeth filter (4) is equivalent to the Sub filter |
| // (1), but the Paeth implementation is simpler if it can assume that |
| // there is a previous row. |
| uint8_t top_row_filter = (filter != 4) ? filter : 1; |
| |
| g_work_slice_u8.ptr[13 * 0] = top_row_filter; |
| memcpy(g_work_slice_u8.ptr + (13 * 0) + 1, src_rows[0], 12); |
| g_work_slice_u8.ptr[13 * 1] = filter; |
| memcpy(g_work_slice_u8.ptr + (13 * 1) + 1, src_rows[1], 12); |
| |
| CHECK_STRING(do_wuffs_png_swizzle( |
| 12, 2, filter_distance, g_have_slice_u8, |
| wuffs_base__make_slice_u8(g_work_slice_u8.ptr, 13 * 2))); |
| |
| wuffs_base__io_buffer have = |
| wuffs_base__ptr_u8__reader(g_have_slice_u8.ptr, 12 * 2, true); |
| have.meta.ri = have.meta.wi; |
| |
| int index = (8 * (filter - 1)) + (2 * (filter_distance - 1)); |
| memcpy(g_want_slice_u8.ptr + (12 * 0), want_rows[index + 0], 12); |
| memcpy(g_want_slice_u8.ptr + (12 * 1), want_rows[index + 1], 12); |
| |
| wuffs_base__io_buffer want = |
| wuffs_base__ptr_u8__reader(g_want_slice_u8.ptr, 12 * 2, true); |
| want.meta.ri = want.meta.wi; |
| |
| char prefix_buf[256]; |
| sprintf(prefix_buf, "filter=%d, filter_distance=%d ", filter, |
| filter_distance); |
| CHECK_STRING(check_io_buffers_equal(prefix_buf, &have, &want)); |
| } |
| } |
| |
| return NULL; |
| } |
| |
| int32_t // |
| apply_png_abs(int32_t x) { |
| return (x < 0) ? -x : +x; |
| } |
| |
| const char* // |
| apply_png_encode_filters(wuffs_base__slice_u8 dst_rows, |
| size_t width, |
| size_t height, |
| size_t filter_distance, |
| wuffs_base__slice_u8 src_rows) { |
| if ((((width + 1) * height) != dst_rows.len) || |
| (((width + 1) * height) != src_rows.len)) { |
| return "apply_png_encode_filters: unexpected rows.len"; |
| } |
| uint8_t* src_prev = NULL; |
| for (size_t y = 0; y < height; y++) { |
| uint8_t filter = src_rows.ptr[(width + 1) * y]; |
| dst_rows.ptr[(width + 1) * y] = filter; |
| uint8_t* dst_curr = &dst_rows.ptr[((width + 1) * y) + 1]; |
| uint8_t* src_curr = &src_rows.ptr[((width + 1) * y) + 1]; |
| |
| for (size_t x = 0; x < width; x++) { |
| int32_t fa = 0; |
| int32_t fb = 0; |
| int32_t fc = 0; |
| if (x >= filter_distance) { |
| fa = src_curr[x - filter_distance]; |
| if (src_prev) { |
| fc = src_prev[x - filter_distance]; |
| } |
| } |
| if (src_prev) { |
| fb = src_prev[x]; |
| } |
| |
| uint8_t prediction = 0; |
| switch (filter) { |
| case 1: |
| prediction = fa; |
| break; |
| case 2: |
| prediction = fb; |
| break; |
| case 3: |
| prediction = (uint8_t)((fa + fb) / 2); |
| break; |
| case 4: { |
| int32_t p = fa + fb - fc; |
| int32_t pa = apply_png_abs(p - fa); |
| int32_t pb = apply_png_abs(p - fb); |
| int32_t pc = apply_png_abs(p - fc); |
| if ((pa <= pb) && (pa <= pc)) { |
| prediction = fa; |
| } else if (pb <= pc) { |
| prediction = fb; |
| } else { |
| prediction = fc; |
| } |
| break; |
| } |
| } |
| dst_curr[x] = src_curr[x] - prediction; |
| } |
| src_prev = src_curr; |
| } |
| return NULL; |
| } |
| |
| const char* // |
| test_wuffs_png_decode_filters_round_trip() { |
| CHECK_FOCUS(__func__); |
| |
| uint8_t src_rows[2][96] = { |
| // "ThoughYouMightHearLaughingSpinningSwingingMadlyA" |
| // "crossTheSun/ItsNotAimedAtAnyone/ItsJustEscapingO" |
| {0x54, 0x68, 0x6F, 0x75, 0x67, 0x68, 0x59, 0x6F, 0x75, 0x4D, 0x69, 0x67, |
| 0x68, 0x74, 0x48, 0x65, 0x61, 0x72, 0x4C, 0x61, 0x75, 0x67, 0x68, 0x69, |
| 0x6E, 0x67, 0x53, 0x70, 0x69, 0x6E, 0x6E, 0x69, 0x6E, 0x67, 0x53, 0x77, |
| 0x69, 0x6E, 0x67, 0x69, 0x6E, 0x67, 0x4D, 0x61, 0x64, 0x6C, 0x79, 0x41, |
| 0x63, 0x72, 0x6F, 0x73, 0x73, 0x54, 0x68, 0x65, 0x53, 0x75, 0x6E, 0x2F, |
| 0x49, 0x74, 0x73, 0x4E, 0x6F, 0x74, 0x41, 0x69, 0x6D, 0x65, 0x64, 0x41, |
| 0x74, 0x41, 0x6E, 0x79, 0x6F, 0x6E, 0x65, 0x2F, 0x49, 0x74, 0x73, 0x4A, |
| 0x75, 0x73, 0x74, 0x45, 0x73, 0x63, 0x61, 0x70, 0x69, 0x6E, 0x67, 0x4F}, |
| // "YesToDanceBeneathTheDiamondSky/WithOneHandWaving" |
| // "Free/SilhouettedByTheSea/CircledByTheCircusSands" |
| {0x59, 0x65, 0x73, 0x54, 0x6F, 0x44, 0x61, 0x6E, 0x63, 0x65, 0x42, 0x65, |
| 0x6E, 0x65, 0x61, 0x74, 0x68, 0x54, 0x68, 0x65, 0x44, 0x69, 0x61, 0x6D, |
| 0x6F, 0x6E, 0x64, 0x53, 0x6B, 0x79, 0x2F, 0x57, 0x69, 0x74, 0x68, 0x4F, |
| 0x6E, 0x65, 0x48, 0x61, 0x6E, 0x64, 0x57, 0x61, 0x76, 0x69, 0x6E, 0x67, |
| 0x46, 0x72, 0x65, 0x65, 0x2F, 0x53, 0x69, 0x6C, 0x68, 0x6F, 0x75, 0x65, |
| 0x74, 0x74, 0x65, 0x64, 0x42, 0x79, 0x54, 0x68, 0x65, 0x53, 0x65, 0x61, |
| 0x2F, 0x43, 0x69, 0x72, 0x63, 0x6C, 0x65, 0x64, 0x42, 0x79, 0x54, 0x68, |
| 0x65, 0x43, 0x69, 0x72, 0x63, 0x75, 0x73, 0x53, 0x61, 0x6E, 0x64, 0x73}, |
| }; |
| |
| memcpy(g_src_slice_u8.ptr + (97 * 0) + 1, src_rows[0], 96); |
| memcpy(g_src_slice_u8.ptr + (97 * 1) + 1, src_rows[1], 96); |
| |
| int filter; |
| for (filter = 1; filter <= 4; filter++) { |
| int filter_distance; |
| for (filter_distance = 1; filter_distance <= 8; filter_distance++) { |
| if ((filter_distance == 5) || (filter_distance == 7)) { |
| continue; |
| } |
| // For the top row, the Paeth filter (4) is equivalent to the Sub filter |
| // (1), but the Paeth implementation is simpler if it can assume that |
| // there is a previous row. |
| uint8_t top_row_filter = (filter != 4) ? filter : 1; |
| |
| g_src_slice_u8.ptr[97 * 0] = top_row_filter; |
| g_src_slice_u8.ptr[97 * 1] = filter; |
| |
| CHECK_STRING(apply_png_encode_filters( |
| wuffs_base__make_slice_u8(g_work_slice_u8.ptr, 97 * 2), 96, 2, |
| filter_distance, |
| wuffs_base__make_slice_u8(g_src_slice_u8.ptr, 97 * 2))); |
| |
| CHECK_STRING(do_wuffs_png_swizzle( |
| 96, 2, filter_distance, g_have_slice_u8, |
| wuffs_base__make_slice_u8(g_work_slice_u8.ptr, 97 * 2))); |
| |
| wuffs_base__io_buffer have = |
| wuffs_base__ptr_u8__reader(g_have_slice_u8.ptr, 96 * 2, true); |
| have.meta.ri = have.meta.wi; |
| |
| memcpy(g_want_slice_u8.ptr + (96 * 0), src_rows[0], 96); |
| memcpy(g_want_slice_u8.ptr + (96 * 1), src_rows[1], 96); |
| |
| wuffs_base__io_buffer want = |
| wuffs_base__ptr_u8__reader(g_want_slice_u8.ptr, 96 * 2, true); |
| want.meta.ri = want.meta.wi; |
| |
| char prefix_buf[256]; |
| sprintf(prefix_buf, "filter=%d, filter_distance=%d ", filter, |
| filter_distance); |
| CHECK_STRING(check_io_buffers_equal(prefix_buf, &have, &want)); |
| } |
| } |
| |
| return NULL; |
| } |
| |
| const char* // |
| test_wuffs_png_decode_frame_config() { |
| CHECK_FOCUS(__func__); |
| |
| static const uint64_t hibiscus_regular_want_areas[] = { |
| 312 * 442, |
| }; |
| static const uint64_t hibiscus_regular_want_io_ps[] = { |
| 0x0021, |
| }; |
| static const uint64_t animated_red_blue_want_areas[] = { |
| 64 * 48, |
| 37 * 9, |
| 49 * 40, |
| 37 * 9, |
| }; |
| static const uint64_t animated_red_blue_want_io_ps[] = { |
| 0x006D, |
| 0x044A, |
| 0x04D1, |
| 0x0720, |
| }; |
| |
| struct { |
| const char* filename; |
| uint64_t want_count; |
| const uint64_t* want_areas; |
| const uint64_t* want_io_ps; |
| } test_cases[] = { |
| { |
| .filename = "test/data/hibiscus.regular.png", |
| .want_count = WUFFS_TESTLIB_ARRAY_SIZE(hibiscus_regular_want_areas), |
| .want_areas = hibiscus_regular_want_areas, |
| .want_io_ps = hibiscus_regular_want_io_ps, |
| }, |
| { |
| .filename = "test/data/animated-red-blue.apng", |
| .want_count = WUFFS_TESTLIB_ARRAY_SIZE(animated_red_blue_want_areas), |
| .want_areas = animated_red_blue_want_areas, |
| .want_io_ps = animated_red_blue_want_io_ps, |
| }, |
| }; |
| |
| for (size_t tc = 0; tc < WUFFS_TESTLIB_ARRAY_SIZE(test_cases); tc++) { |
| wuffs_png__decoder dec; |
| CHECK_STATUS("initialize", |
| wuffs_png__decoder__initialize( |
| &dec, sizeof dec, WUFFS_VERSION, |
| WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); |
| wuffs_base__frame_config fc = ((wuffs_base__frame_config){}); |
| wuffs_base__io_buffer src = ((wuffs_base__io_buffer){ |
| .data = g_src_slice_u8, |
| }); |
| CHECK_STRING(read_file(&src, test_cases[tc].filename)); |
| |
| uint64_t have_count = 0; |
| while (true) { |
| wuffs_base__status status = |
| wuffs_png__decoder__decode_frame_config(&dec, &fc, &src); |
| if (status.repr == wuffs_base__note__end_of_data) { |
| break; |
| } else if (!wuffs_base__status__is_ok(&status)) { |
| RETURN_FAIL("decode_frame_config tc=%zu #%" PRIu64 ": %s", tc, |
| have_count, status.repr); |
| } |
| |
| if (have_count < test_cases[tc].want_count) { |
| uint64_t have_area = ((uint64_t)wuffs_base__frame_config__width(&fc)) * |
| ((uint64_t)wuffs_base__frame_config__height(&fc)); |
| if (have_area != test_cases[tc].want_areas[have_count]) { |
| RETURN_FAIL( |
| "area tc=%zu #%" PRIu64 ": have %" PRIu64 ", want %" PRIu64, tc, |
| have_count, have_area, test_cases[tc].want_areas[have_count]); |
| } |
| |
| uint64_t have_io_p = wuffs_base__frame_config__io_position(&fc); |
| if (have_io_p != test_cases[tc].want_io_ps[have_count]) { |
| RETURN_FAIL("io_position tc=%zu #%" PRIu64 ": have %" PRIu64 |
| ", want %" PRIu64, |
| tc, have_count, have_io_p, |
| test_cases[tc].want_io_ps[have_count]); |
| } |
| } |
| |
| have_count++; |
| } |
| |
| if (have_count != test_cases[tc].want_count) { |
| RETURN_FAIL("count tc=%zu: have %" PRIu64 ", want %" PRIu64, tc, |
| have_count, test_cases[tc].want_count); |
| } |
| } |
| |
| return NULL; |
| } |
| |
| const char* // |
| test_wuffs_png_decode_metadata_chrm_gama_srgb() { |
| CHECK_FOCUS(__func__); |
| wuffs_png__decoder dec; |
| |
| for (int q = 0; q < 4; q++) { |
| wuffs_base__io_buffer src = ((wuffs_base__io_buffer){ |
| .data = g_src_slice_u8, |
| }); |
| CHECK_STRING(read_file(&src, "test/data/bricks-dither.png")); |
| wuffs_base__image_config ic = ((wuffs_base__image_config){}); |
| |
| CHECK_STATUS("initialize", |
| wuffs_png__decoder__initialize( |
| &dec, sizeof dec, WUFFS_VERSION, |
| WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); |
| |
| uint32_t want_fourcc = 0; |
| uint32_t want[8] = {0}; |
| uint32_t have[8] = {0}; |
| if (q == 1) { |
| want_fourcc = WUFFS_BASE__FOURCC__CHRM; |
| want[0] = 31270; |
| want[1] = 32900; |
| want[2] = 64000; |
| want[3] = 33000; |
| want[4] = 30000; |
| want[5] = 60000; |
| want[6] = 15000; |
| want[7] = 6000; |
| } else if (q == 2) { |
| want_fourcc = WUFFS_BASE__FOURCC__GAMA; |
| want[0] = 45455; |
| } else if (q == 3) { |
| want_fourcc = WUFFS_BASE__FOURCC__SRGB; |
| want[0] = WUFFS_BASE__SRGB_RENDERING_INTENT__PERCEPTUAL; |
| have[0] = 123; |
| } |
| wuffs_png__decoder__set_report_metadata(&dec, want_fourcc, true); |
| |
| while (true) { |
| wuffs_base__status status = |
| wuffs_png__decoder__decode_image_config(&dec, &ic, &src); |
| if (wuffs_base__status__is_ok(&status)) { |
| break; |
| } else if (status.repr != wuffs_base__note__metadata_reported) { |
| RETURN_FAIL("decode_image_config (q=%d): have \"%s\", want \"%s\"", q, |
| status.repr, wuffs_base__note__metadata_reported); |
| } |
| |
| wuffs_base__io_buffer empty = wuffs_base__empty_io_buffer(); |
| wuffs_base__more_information minfo = wuffs_base__empty_more_information(); |
| status = wuffs_png__decoder__tell_me_more(&dec, &empty, &minfo, &src); |
| if (wuffs_base__status__is_error(&status)) { |
| RETURN_FAIL("tell_me_more (q=%d): \"%s\"", q, status.repr); |
| } else if (minfo.flavor != |
| WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_PARSED) { |
| RETURN_FAIL("tell_me_more (q=%d): flavor: have %" PRIu32 |
| ", want %" PRIu32, |
| q, minfo.flavor, |
| WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_PARSED); |
| } |
| uint32_t have_fourcc = |
| wuffs_base__more_information__metadata__fourcc(&minfo); |
| if (have_fourcc != want_fourcc) { |
| RETURN_FAIL("tell_me_more (q=%d): fourcc: have 0x%08" PRIX32 |
| ", want 0x%08" PRIX32, |
| q, have_fourcc, want_fourcc); |
| } else if (have_fourcc == WUFFS_BASE__FOURCC__CHRM) { |
| for (int i = 0; i < 8; i++) { |
| have[i] = ((uint32_t)( |
| wuffs_base__more_information__metadata_parsed__chrm(&minfo, i))); |
| } |
| } else if (have_fourcc == WUFFS_BASE__FOURCC__GAMA) { |
| have[0] = wuffs_base__more_information__metadata_parsed__gama(&minfo); |
| } else if (have_fourcc == WUFFS_BASE__FOURCC__SRGB) { |
| have[0] = wuffs_base__more_information__metadata_parsed__srgb(&minfo); |
| } |
| } |
| |
| for (int i = 0; i < 8; i++) { |
| if (have[i] != want[i]) { |
| RETURN_FAIL("(q=%d, i=%d): have %" PRIu32 ", want %" PRIu32, q, i, |
| have[i], want[i]); |
| } |
| } |
| } |
| |
| return NULL; |
| } |
| |
| const char* // |
| test_wuffs_png_decode_metadata_exif() { |
| CHECK_FOCUS(__func__); |
| wuffs_base__io_buffer src = ((wuffs_base__io_buffer){ |
| .data = g_src_slice_u8, |
| }); |
| CHECK_STRING(read_file(&src, "test/data/artificial-png/exif.png")); |
| |
| wuffs_png__decoder dec; |
| CHECK_STATUS("initialize", |
| wuffs_png__decoder__initialize( |
| &dec, sizeof dec, WUFFS_VERSION, |
| WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); |
| wuffs_png__decoder__set_report_metadata(&dec, WUFFS_BASE__FOURCC__EXIF, true); |
| |
| wuffs_base__image_config ic = ((wuffs_base__image_config){}); |
| wuffs_base__io_buffer empty = wuffs_base__empty_io_buffer(); |
| wuffs_base__more_information minfo = wuffs_base__empty_more_information(); |
| |
| wuffs_base__status status = |
| wuffs_png__decoder__decode_image_config(&dec, &ic, &src); |
| if (status.repr != wuffs_base__note__metadata_reported) { |
| RETURN_FAIL("decode_image_config #0: have \"%s\", want \"%s\"", status.repr, |
| wuffs_base__note__metadata_reported); |
| } |
| |
| status = wuffs_png__decoder__tell_me_more(&dec, &empty, &minfo, &src); |
| if (status.repr != wuffs_base__suspension__even_more_information) { |
| RETURN_FAIL("tell_me_more #0: have \"%s\", want \"%s\"", status.repr, |
| wuffs_base__suspension__even_more_information); |
| } |
| |
| // "hd test/data/artificial-png/exif.png" says 0x29..0x33 holds "LoremIpsum". |
| wuffs_base__range_ie_u64 have = |
| wuffs_base__more_information__metadata_raw_passthrough__range(&minfo); |
| wuffs_base__range_ie_u64 want = wuffs_base__make_range_ie_u64(0x29, 0x33); |
| if (!wuffs_base__range_ie_u64__equals(&have, want)) { |
| RETURN_FAIL("range #0: have 0x%" PRIx64 "..0x%" PRIX64 ", want 0x%" PRIx64 |
| "..0x%" PRIX64, |
| have.min_incl, have.max_excl, want.min_incl, want.max_excl); |
| } else if ((src.meta.ri == 0x29) && (src.meta.wi >= 0x33)) { |
| src.meta.ri = 0x33; |
| } |
| |
| status = wuffs_png__decoder__tell_me_more(&dec, &empty, &minfo, &src); |
| if (status.repr != NULL) { |
| RETURN_FAIL("tell_me_more #1: have \"%s\", want \"(null)\"", status.repr); |
| } |
| have = wuffs_base__more_information__metadata_raw_passthrough__range(&minfo); |
| if (!wuffs_base__range_ie_u64__is_empty(&have)) { |
| RETURN_FAIL("tell_me_more #1: non-empty range"); |
| } |
| |
| status = wuffs_png__decoder__decode_image_config(&dec, &ic, &src); |
| if (status.repr != NULL) { |
| RETURN_FAIL("decode_image_config #1: have \"%s\", want \"(null)\"", |
| status.repr); |
| } else if (wuffs_base__pixel_config__width(&ic.pixcfg) != 1) { |
| RETURN_FAIL("decode_image_config #1: have %" PRIu32 ", want 1", |
| wuffs_base__pixel_config__width(&ic.pixcfg)); |
| } |
| |
| return NULL; |
| } |
| |
| const char* // |
| test_wuffs_png_decode_metadata_iccp() { |
| CHECK_FOCUS(__func__); |
| wuffs_base__io_buffer have = ((wuffs_base__io_buffer){ |
| .data = g_have_slice_u8, |
| }); |
| wuffs_base__io_buffer want = ((wuffs_base__io_buffer){ |
| .data = g_want_slice_u8, |
| }); |
| wuffs_base__io_buffer src = ((wuffs_base__io_buffer){ |
| .data = g_src_slice_u8, |
| }); |
| CHECK_STRING(read_file(&want, "test/data/DCI-P3-D65.icc")); |
| CHECK_STRING(read_file( |
| &src, "test/data/red-blue-gradient.dcip3d65-no-chrm-no-gama.png")); |
| |
| bool seen_iccp = false; |
| |
| wuffs_png__decoder dec; |
| CHECK_STATUS("initialize", |
| wuffs_png__decoder__initialize( |
| &dec, sizeof dec, WUFFS_VERSION, |
| WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); |
| wuffs_png__decoder__set_report_metadata(&dec, WUFFS_BASE__FOURCC__ICCP, true); |
| |
| wuffs_base__image_config ic = ((wuffs_base__image_config){}); |
| |
| while (true) { |
| wuffs_base__status status = |
| wuffs_png__decoder__decode_image_config(&dec, &ic, &src); |
| if (wuffs_base__status__is_ok(&status)) { |
| break; |
| } else if (status.repr != wuffs_base__note__metadata_reported) { |
| RETURN_FAIL("decode_image_config: have \"%s\", want \"%s\"", status.repr, |
| wuffs_base__note__metadata_reported); |
| } |
| |
| { |
| wuffs_base__more_information minfo = wuffs_base__empty_more_information(); |
| wuffs_base__status status = |
| wuffs_png__decoder__tell_me_more(&dec, &have, &minfo, &src); |
| if (!wuffs_base__status__is_ok(&status)) { |
| RETURN_FAIL("tell_me_more: \"%s\"", status.repr); |
| } else if (minfo.flavor != |
| WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_TRANSFORM) { |
| RETURN_FAIL( |
| "tell_me_more: flavor: have %" PRIu32 ", want %" PRIu32, |
| minfo.flavor, |
| WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_TRANSFORM); |
| } else if (wuffs_base__more_information__metadata__fourcc(&minfo) != |
| WUFFS_BASE__FOURCC__ICCP) { |
| RETURN_FAIL("tell_me_more: fourcc: have %" PRIX32 ", want %" PRIX32, |
| wuffs_base__more_information__metadata__fourcc(&minfo), |
| WUFFS_BASE__FOURCC__ICCP); |
| } |
| CHECK_STRING(check_io_buffers_equal("", &have, &want)); |
| seen_iccp = true; |
| } |
| } |
| |
| if (!seen_iccp) { |
| RETURN_FAIL("seen_iccp: have %d, want %d", seen_iccp, true); |
| } |
| |
| { |
| // 423 = 0x1A7 is just before the "????IDAT" bytes. |
| uint64_t have = wuffs_base__image_config__first_frame_io_position(&ic); |
| uint64_t want = 423; |
| if (have != want) { |
| RETURN_FAIL("first_frame_io_position: have %" PRIu64 ", want %" PRIu64, |
| have, want); |
| } |
| } |
| |
| { |
| wuffs_base__frame_config fc = ((wuffs_base__frame_config){}); |
| wuffs_base__status status = |
| wuffs_png__decoder__decode_frame_config(&dec, &fc, &src); |
| if (!wuffs_base__status__is_ok(&status)) { |
| RETURN_FAIL("decode_frame_config: %s", status.repr); |
| } |
| uint32_t have = wuffs_base__frame_config__width(&fc); |
| uint32_t want = 256; |
| if (have != want) { |
| RETURN_FAIL("decode_frame_config: width: have %" PRIu32 ", want %" PRIu32, |
| have, want); |
| } |
| } |
| |
| return NULL; |
| } |
| |
| const char* // |
| test_wuffs_png_decode_metadata_kvp() { |
| CHECK_FOCUS(__func__); |
| wuffs_base__io_buffer src = ((wuffs_base__io_buffer){ |
| .data = g_src_slice_u8, |
| }); |
| CHECK_STRING(read_file(&src, "test/data/artificial-png/key-value-pairs.png")); |
| |
| const char* wants[] = { |
| "Key", // |
| "English", // |
| "Clé", // |
| "Français", // |
| "zlïbK", // |
| "zlïbV", // |
| "U-Key", // |
| "U-значение", // |
| "Z-Këy", // |
| "Z-значение", // |
| }; |
| |
| wuffs_png__decoder dec; |
| CHECK_STATUS("initialize", |
| wuffs_png__decoder__initialize( |
| &dec, sizeof dec, WUFFS_VERSION, |
| WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); |
| wuffs_png__decoder__set_report_metadata(&dec, WUFFS_BASE__FOURCC__KVP, true); |
| |
| wuffs_base__image_config ic = ((wuffs_base__image_config){}); |
| wuffs_base__more_information minfo = wuffs_base__empty_more_information(); |
| |
| size_t i = 0; |
| for (;; i++) { |
| wuffs_base__status status = |
| wuffs_png__decoder__decode_image_config(&dec, &ic, &src); |
| if (wuffs_base__status__is_ok(&status)) { |
| break; |
| } else if (status.repr != wuffs_base__note__metadata_reported) { |
| RETURN_FAIL("decode_image_config i=%zu: %s", i, status.repr); |
| } |
| |
| wuffs_base__io_buffer have = ((wuffs_base__io_buffer){ |
| .data = g_have_slice_u8, |
| }); |
| status = wuffs_png__decoder__tell_me_more(&dec, &have, &minfo, &src); |
| if (!wuffs_base__status__is_ok(&status)) { |
| RETURN_FAIL("tell_me_more i=%zu: \"%s\"", i, status.repr); |
| } else if (minfo.flavor != |
| WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_TRANSFORM) { |
| RETURN_FAIL("tell_me_more i=%zu: flavor: have %" PRIu32 ", want %" PRIu32, |
| i, minfo.flavor, |
| WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_TRANSFORM); |
| } |
| |
| uint32_t have_fourcc = |
| wuffs_base__more_information__metadata__fourcc(&minfo); |
| uint32_t want_fourcc = |
| (i & 1) ? WUFFS_BASE__FOURCC__KVPV : WUFFS_BASE__FOURCC__KVPK; |
| if (have_fourcc != want_fourcc) { |
| RETURN_FAIL("tell_me_more i=%zu: fourcc: have %" PRIX32 ", want %" PRIX32, |
| i, have_fourcc, want_fourcc); |
| } |
| |
| wuffs_base__io_buffer want = ((wuffs_base__io_buffer){ |
| .data = g_want_slice_u8, |
| }); |
| if (i < WUFFS_TESTLIB_ARRAY_SIZE(wants)) { |
| size_t n = strlen(wants[i]); |
| if (n <= want.data.len) { |
| memcpy(want.data.ptr, wants[i], n); |
| want.meta.wi = n; |
| } |
| } |
| CHECK_STRING(check_io_buffers_equal("", &have, &want)); |
| } |
| |
| if (i != WUFFS_TESTLIB_ARRAY_SIZE(wants)) { |
| RETURN_FAIL("i: have %zu, want %zu", i, WUFFS_TESTLIB_ARRAY_SIZE(wants)); |
| } |
| return NULL; |
| } |
| |
| const char* // |
| test_wuffs_png_decode_restart_frame() { |
| CHECK_FOCUS(__func__); |
| wuffs_base__io_buffer src = ((wuffs_base__io_buffer){ |
| .data = g_src_slice_u8, |
| }); |
| CHECK_STRING(read_file(&src, "test/data/pjw-thumbnail.png")); |
| |
| wuffs_png__decoder dec; |
| CHECK_STATUS("initialize", |
| wuffs_png__decoder__initialize( |
| &dec, sizeof dec, WUFFS_VERSION, |
| WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); |
| |
| wuffs_base__image_config ic = ((wuffs_base__image_config){}); |
| CHECK_STATUS("decode_image_config", |
| wuffs_png__decoder__decode_image_config(&dec, &ic, &src)); |
| // 51 = 0x33 is just before the "????IDAT" bytes. |
| uint64_t ffio = wuffs_base__image_config__first_frame_io_position(&ic); |
| if (ffio != 51) { |
| RETURN_FAIL("first_frame_io_position: have %" PRIu64 ", want 51", ffio); |
| } |
| |
| wuffs_base__pixel_buffer pb = ((wuffs_base__pixel_buffer){}); |
| CHECK_STATUS("set_from_slice", wuffs_base__pixel_buffer__set_from_slice( |
| &pb, &ic.pixcfg, g_pixel_slice_u8)); |
| |
| for (int i = 0; i < 2; i++) { |
| if (i > 0) { |
| CHECK_STATUS("restart_frame", |
| wuffs_png__decoder__restart_frame(&dec, 0, 51)); |
| if (51 <= src.meta.wi) { |
| src.meta.ri = 51; |
| } |
| } |
| |
| uint64_t rpos = wuffs_base__io_buffer__reader_position(&src); |
| if (rpos != 51) { |
| RETURN_FAIL("reader_position (before) #%d: have %" PRIu64 ", want 51", i, |
| rpos); |
| } |
| |
| wuffs_base__status status = wuffs_png__decoder__decode_frame( |
| &dec, &pb, &src, WUFFS_BASE__PIXEL_BLEND__SRC, g_work_slice_u8, NULL); |
| if (!wuffs_base__status__is_ok(&status)) { |
| RETURN_FAIL("decode_frame #%d: %s", i, status.repr); |
| } |
| |
| // 196 = 0xC4 is just before the "????IEND" bytes. |
| rpos = wuffs_base__io_buffer__reader_position(&src); |
| if (rpos != 196) { |
| RETURN_FAIL("reader_position (after) #%d: have %" PRIu64 ", want 196", i, |
| rpos); |
| } |
| } |
| |
| return NULL; |
| } |
| |
| // ---------------- Mimic Tests |
| |
| #ifdef WUFFS_MIMIC |
| |
| const char* // |
| do_test_mimic_png_decode(const char* filename) { |
| wuffs_base__io_buffer src = ((wuffs_base__io_buffer){ |
| .data = g_src_slice_u8, |
| }); |
| CHECK_STRING(read_file(&src, filename)); |
| |
| src.meta.ri = 0; |
| wuffs_base__io_buffer have = ((wuffs_base__io_buffer){ |
| .data = g_have_slice_u8, |
| }); |
| CHECK_STRING(wuffs_png_decode( |
| NULL, &have, WUFFS_INITIALIZE__DEFAULT_OPTIONS, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL), |
| NULL, 0, &src)); |
| |
| src.meta.ri = 0; |
| wuffs_base__io_buffer want = ((wuffs_base__io_buffer){ |
| .data = g_want_slice_u8, |
| }); |
| CHECK_STRING(mimic_png_decode( |
| NULL, &want, WUFFS_INITIALIZE__DEFAULT_OPTIONS, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL), |
| NULL, 0, &src)); |
| |
| return check_io_buffers_equal("", &have, &want); |
| } |
| |
| const char* // |
| test_mimic_png_decode_image_19k_8bpp() { |
| CHECK_FOCUS(__func__); |
| return do_test_mimic_png_decode("test/data/bricks-gray.no-ancillary.png"); |
| } |
| |
| const char* // |
| test_mimic_png_decode_image_40k_24bpp() { |
| CHECK_FOCUS(__func__); |
| return do_test_mimic_png_decode("test/data/hat.png"); |
| } |
| |
| const char* // |
| test_mimic_png_decode_image_77k_8bpp() { |
| CHECK_FOCUS(__func__); |
| return do_test_mimic_png_decode("test/data/bricks-dither.png"); |
| } |
| |
| const char* // |
| test_mimic_png_decode_image_552k_32bpp() { |
| CHECK_FOCUS(__func__); |
| return do_test_mimic_png_decode("test/data/hibiscus.primitive.png"); |
| } |
| |
| const char* // |
| test_mimic_png_decode_image_4002k_24bpp() { |
| CHECK_FOCUS(__func__); |
| return do_test_mimic_png_decode("test/data/harvesters.png"); |
| } |
| |
| const char* // |
| test_mimic_png_decode_bad_crc32_checksum_ancillary() { |
| CHECK_FOCUS(__func__); |
| // libpng automatically applies the "gAMA" chunk (with no matching "sRGB" |
| // chunk) but Wuffs does not. To make the comparison more like-for-like, |
| // especially in emitting identical BGRA pixels, patch the source file by |
| // replacing the "gAMA" with the nonsense "hAMA". ASCII 'g' is 0x67. |
| // |
| // This makes the "hAMA" CRC-32 checksum no longer verify, since the checksum |
| // input includes the chunk type. By default, libpng "warns and discards" |
| // when seeing ancillary chunk checksum failures (as opposed to critical |
| // chunk checksum failures) but it still continues to decode the image. |
| // Wuffs' decoder likewise ignores the bad ancillary chunk checksum. |
| return do_test_mimic_png_decode("@25=67=68;test/data/bricks-gray.png"); |
| } |
| |
| const char* // |
| test_mimic_png_decode_bad_crc32_checksum_critical() { |
| CHECK_FOCUS(__func__); |
| return do_test_xxxxx_png_decode_bad_crc32_checksum_critical( |
| &mimic_png_decode); |
| } |
| |
| #endif // WUFFS_MIMIC |
| |
| // ---------------- PNG Benches |
| |
| const char* // |
| bench_wuffs_png_decode_image_19k_8bpp() { |
| CHECK_FOCUS(__func__); |
| return do_bench_image_decode( |
| &wuffs_png_decode, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__Y), NULL, 0, |
| "test/data/bricks-gray.no-ancillary.png", 0, SIZE_MAX, 50); |
| } |
| |
| const char* // |
| bench_wuffs_png_decode_image_40k_24bpp() { |
| CHECK_FOCUS(__func__); |
| return do_bench_image_decode( |
| &wuffs_png_decode, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL), |
| NULL, 0, "test/data/hat.png", 0, SIZE_MAX, 30); |
| } |
| |
| const char* // |
| bench_wuffs_png_decode_image_77k_8bpp() { |
| CHECK_FOCUS(__func__); |
| return do_bench_image_decode( |
| &wuffs_png_decode, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL), |
| NULL, 0, "test/data/bricks-dither.png", 0, SIZE_MAX, 50); |
| } |
| |
| const char* // |
| bench_wuffs_png_decode_image_552k_32bpp_ignore_checksum() { |
| uint32_t q = WUFFS_BASE__QUIRK_IGNORE_CHECKSUM; |
| CHECK_FOCUS(__func__); |
| return do_bench_image_decode( |
| &wuffs_png_decode, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL), |
| &q, 1, "test/data/hibiscus.primitive.png", 0, SIZE_MAX, 4); |
| } |
| |
| const char* // |
| bench_wuffs_png_decode_image_552k_32bpp_verify_checksum() { |
| CHECK_FOCUS(__func__); |
| return do_bench_image_decode( |
| &wuffs_png_decode, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL), |
| NULL, 0, "test/data/hibiscus.primitive.png", 0, SIZE_MAX, 4); |
| } |
| |
| const char* // |
| bench_wuffs_png_decode_image_4002k_24bpp() { |
| CHECK_FOCUS(__func__); |
| return do_bench_image_decode( |
| &wuffs_png_decode, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL), |
| NULL, 0, "test/data/harvesters.png", 0, SIZE_MAX, 1); |
| } |
| |
| const char* // |
| do_bench_wuffs_png_decode_filter(uint8_t filter, |
| uint8_t filter_distance, |
| uint64_t iters_unscaled) { |
| const uint32_t width = 160; |
| const uint32_t height = 120; |
| const uint32_t bytes_per_row = 160 * 4; |
| const size_t n = (1 + bytes_per_row) * height; |
| |
| wuffs_base__io_buffer workbuf = wuffs_base__slice_u8__writer(g_work_slice_u8); |
| CHECK_STRING(read_file(&workbuf, "test/data/pi.txt")); |
| if (workbuf.meta.wi < n) { |
| return "source data is too short"; |
| } |
| |
| for (uint32_t y = 0; y < height; y++) { |
| workbuf.data.ptr[(1 + bytes_per_row) * y] = filter; |
| } |
| |
| // For the top row, the Paeth filter (4) is equivalent to the Sub filter |
| // (1), but the Paeth implementation is simpler if it can assume that |
| // there is a previous row. |
| if (workbuf.data.ptr[0] == 4) { |
| workbuf.data.ptr[0] = 1; |
| } |
| |
| wuffs_png__decoder dec; |
| CHECK_STATUS("initialize", wuffs_png__decoder__initialize( |
| &dec, sizeof dec, WUFFS_VERSION, |
| WUFFS_INITIALIZE__DEFAULT_OPTIONS)); |
| dec.private_impl.f_frame_rect_x0 = 0; |
| dec.private_impl.f_frame_rect_y0 = 0; |
| dec.private_impl.f_frame_rect_x1 = width; |
| dec.private_impl.f_frame_rect_y1 = height; |
| dec.private_impl.f_width = width; |
| dec.private_impl.f_height = height; |
| dec.private_impl.f_pass_bytes_per_row = bytes_per_row; |
| dec.private_impl.f_filter_distance = filter_distance; |
| wuffs_png__decoder__choose_filter_implementations(&dec); |
| |
| CHECK_STATUS("prepare", |
| wuffs_base__pixel_swizzler__prepare( |
| &dec.private_impl.f_swizzler, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__Y), |
| wuffs_base__empty_slice_u8(), |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__Y), |
| wuffs_base__empty_slice_u8(), WUFFS_BASE__PIXEL_BLEND__SRC)); |
| |
| wuffs_base__pixel_config pc = ((wuffs_base__pixel_config){}); |
| wuffs_base__pixel_config__set(&pc, WUFFS_BASE__PIXEL_FORMAT__Y, |
| WUFFS_BASE__PIXEL_SUBSAMPLING__NONE, width, |
| height); |
| wuffs_base__pixel_buffer pb = ((wuffs_base__pixel_buffer){}); |
| |
| CHECK_STATUS("set_from_slice", wuffs_base__pixel_buffer__set_from_slice( |
| &pb, &pc, g_pixel_slice_u8)); |
| |
| bench_start(); |
| uint64_t n_bytes = 0; |
| uint64_t iters = iters_unscaled * g_flags.iterscale; |
| for (uint64_t i = 0; i < iters; i++) { |
| CHECK_STATUS( |
| "filter_and_swizzle", |
| wuffs_png__decoder__filter_and_swizzle( |
| &dec, &pb, wuffs_base__make_slice_u8(workbuf.data.ptr, n))); |
| n_bytes += n; |
| } |
| bench_finish(iters, n_bytes); |
| return NULL; |
| } |
| |
| const char* // |
| bench_wuffs_png_decode_filt_1_dist_3() { |
| CHECK_FOCUS(__func__); |
| return do_bench_wuffs_png_decode_filter(1, 3, 200); |
| } |
| |
| const char* // |
| bench_wuffs_png_decode_filt_1_dist_4() { |
| CHECK_FOCUS(__func__); |
| return do_bench_wuffs_png_decode_filter(1, 4, 200); |
| } |
| |
| const char* // |
| bench_wuffs_png_decode_filt_2_dist_3() { |
| CHECK_FOCUS(__func__); |
| return do_bench_wuffs_png_decode_filter(2, 3, 1000); |
| } |
| |
| const char* // |
| bench_wuffs_png_decode_filt_2_dist_4() { |
| CHECK_FOCUS(__func__); |
| return do_bench_wuffs_png_decode_filter(2, 4, 1000); |
| } |
| |
| const char* // |
| bench_wuffs_png_decode_filt_3_dist_3() { |
| CHECK_FOCUS(__func__); |
| return do_bench_wuffs_png_decode_filter(3, 3, 100); |
| } |
| |
| const char* // |
| bench_wuffs_png_decode_filt_3_dist_4() { |
| CHECK_FOCUS(__func__); |
| return do_bench_wuffs_png_decode_filter(3, 4, 100); |
| } |
| |
| const char* // |
| bench_wuffs_png_decode_filt_4_dist_3() { |
| CHECK_FOCUS(__func__); |
| return do_bench_wuffs_png_decode_filter(4, 3, 20); |
| } |
| |
| const char* // |
| bench_wuffs_png_decode_filt_4_dist_4() { |
| CHECK_FOCUS(__func__); |
| return do_bench_wuffs_png_decode_filter(4, 4, 20); |
| } |
| |
| // ---------------- Mimic Benches |
| |
| #ifdef WUFFS_MIMIC |
| |
| const char* // |
| bench_mimic_png_decode_image_19k_8bpp() { |
| CHECK_FOCUS(__func__); |
| return do_bench_image_decode( |
| &mimic_png_decode, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__Y), NULL, 0, |
| "test/data/bricks-gray.no-ancillary.png", 0, SIZE_MAX, 50); |
| } |
| |
| const char* // |
| bench_mimic_png_decode_image_40k_24bpp() { |
| CHECK_FOCUS(__func__); |
| return do_bench_image_decode( |
| &mimic_png_decode, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL), |
| NULL, 0, "test/data/hat.png", 0, SIZE_MAX, 30); |
| } |
| |
| const char* // |
| bench_mimic_png_decode_image_77k_8bpp() { |
| CHECK_FOCUS(__func__); |
| return do_bench_image_decode( |
| &mimic_png_decode, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL), |
| NULL, 0, "test/data/bricks-dither.png", 0, SIZE_MAX, 50); |
| } |
| |
| const char* // |
| bench_mimic_png_decode_image_552k_32bpp_ignore_checksum() { |
| uint32_t q = WUFFS_BASE__QUIRK_IGNORE_CHECKSUM; |
| CHECK_FOCUS(__func__); |
| return do_bench_image_decode( |
| &mimic_png_decode, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL), |
| &q, 1, "test/data/hibiscus.primitive.png", 0, SIZE_MAX, 4); |
| } |
| |
| const char* // |
| bench_mimic_png_decode_image_552k_32bpp_verify_checksum() { |
| CHECK_FOCUS(__func__); |
| return do_bench_image_decode( |
| &mimic_png_decode, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL), |
| NULL, 0, "test/data/hibiscus.primitive.png", 0, SIZE_MAX, 4); |
| } |
| |
| const char* // |
| bench_mimic_png_decode_image_4002k_24bpp() { |
| CHECK_FOCUS(__func__); |
| return do_bench_image_decode( |
| &mimic_png_decode, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED, |
| wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL), |
| NULL, 0, "test/data/harvesters.png", 0, SIZE_MAX, 1); |
| } |
| |
| #endif // WUFFS_MIMIC |
| |
| // ---------------- Manifest |
| |
| proc g_tests[] = { |
| |
| test_wuffs_png_decode_bad_crc32_checksum_critical, |
| test_wuffs_png_decode_filters_golden, |
| test_wuffs_png_decode_filters_round_trip, |
| test_wuffs_png_decode_frame_config, |
| test_wuffs_png_decode_interface, |
| test_wuffs_png_decode_metadata_chrm_gama_srgb, |
| test_wuffs_png_decode_metadata_exif, |
| test_wuffs_png_decode_metadata_iccp, |
| test_wuffs_png_decode_metadata_kvp, |
| test_wuffs_png_decode_restart_frame, |
| |
| #ifdef WUFFS_MIMIC |
| |
| test_mimic_png_decode_bad_crc32_checksum_ancillary, |
| #ifndef WUFFS_MIMICLIB_PNG_DOES_NOT_VERIFY_CHECKSUM |
| test_mimic_png_decode_bad_crc32_checksum_critical, |
| #endif |
| test_mimic_png_decode_image_19k_8bpp, |
| test_mimic_png_decode_image_40k_24bpp, |
| test_mimic_png_decode_image_77k_8bpp, |
| test_mimic_png_decode_image_552k_32bpp, |
| test_mimic_png_decode_image_4002k_24bpp, |
| |
| #endif // WUFFS_MIMIC |
| |
| NULL, |
| }; |
| |
| proc g_benches[] = { |
| |
| bench_wuffs_png_decode_filt_1_dist_3, |
| bench_wuffs_png_decode_filt_1_dist_4, |
| bench_wuffs_png_decode_filt_2_dist_3, |
| bench_wuffs_png_decode_filt_2_dist_4, |
| bench_wuffs_png_decode_filt_3_dist_3, |
| bench_wuffs_png_decode_filt_3_dist_4, |
| bench_wuffs_png_decode_filt_4_dist_3, |
| bench_wuffs_png_decode_filt_4_dist_4, |
| bench_wuffs_png_decode_image_19k_8bpp, |
| bench_wuffs_png_decode_image_40k_24bpp, |
| bench_wuffs_png_decode_image_77k_8bpp, |
| bench_wuffs_png_decode_image_552k_32bpp_ignore_checksum, |
| bench_wuffs_png_decode_image_552k_32bpp_verify_checksum, |
| bench_wuffs_png_decode_image_4002k_24bpp, |
| |
| #ifdef WUFFS_MIMIC |
| |
| bench_mimic_png_decode_image_19k_8bpp, |
| bench_mimic_png_decode_image_40k_24bpp, |
| bench_mimic_png_decode_image_77k_8bpp, |
| #ifndef WUFFS_MIMICLIB_PNG_DOES_NOT_SUPPORT_QUIRK_IGNORE_CHECKSUM |
| bench_mimic_png_decode_image_552k_32bpp_ignore_checksum, |
| #endif |
| #ifndef WUFFS_MIMICLIB_PNG_DOES_NOT_VERIFY_CHECKSUM |
| bench_mimic_png_decode_image_552k_32bpp_verify_checksum, |
| #endif |
| bench_mimic_png_decode_image_4002k_24bpp, |
| |
| #endif // WUFFS_MIMIC |
| |
| NULL, |
| }; |
| |
| int // |
| main(int argc, char** argv) { |
| g_proc_package_name = "std/png"; |
| return test_main(argc, argv, g_tests, g_benches); |
| } |
