| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * 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 |
| * |
| * http://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. |
| */ |
| |
| #ifndef BYTE_UTILS_H |
| |
| #define BYTE_UTILS_H |
| |
| #include <arpa/inet.h> |
| |
| namespace android { |
| |
| constexpr int FOURCC(unsigned char c1, unsigned char c2, unsigned char c3, unsigned char c4) { |
| return ((c1) << 24 | (c2) << 16 | (c3) << 8 | (c4)); |
| } |
| |
| template <size_t N> |
| constexpr int32_t FOURCC(const char (&s) [N]) { |
| static_assert(N == 5, "fourcc: wrong length"); |
| return |
| (unsigned char) s[0] << 24 | |
| (unsigned char) s[1] << 16 | |
| (unsigned char) s[2] << 8 | |
| (unsigned char) s[3] << 0; |
| } |
| |
| |
| uint16_t U16_AT(const uint8_t *ptr); |
| uint32_t U32_AT(const uint8_t *ptr); |
| uint64_t U64_AT(const uint8_t *ptr); |
| |
| uint16_t U16LE_AT(const uint8_t *ptr); |
| uint32_t U32LE_AT(const uint8_t *ptr); |
| uint64_t U64LE_AT(const uint8_t *ptr); |
| |
| uint64_t ntoh64(uint64_t x); |
| uint64_t hton64(uint64_t x); |
| |
| void MakeFourCCString(uint32_t x, char *s); |
| |
| } // namespace android |
| |
| #endif // BYTE_UTILS_H |
| |
