57 lines
1.5 KiB
C++
Executable File
57 lines
1.5 KiB
C++
Executable File
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef BYTE_UTILS_H
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#define BYTE_UTILS_H
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#include <arpa/inet.h>
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namespace android {
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constexpr int FOURCC(unsigned char c1, unsigned char c2, unsigned char c3, unsigned char c4) {
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return ((c1) << 24 | (c2) << 16 | (c3) << 8 | (c4));
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}
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template <size_t N>
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constexpr int32_t FOURCC(const char (&s) [N]) {
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static_assert(N == 5, "fourcc: wrong length");
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return
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(unsigned char) s[0] << 24 |
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(unsigned char) s[1] << 16 |
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(unsigned char) s[2] << 8 |
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(unsigned char) s[3] << 0;
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}
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uint16_t U16_AT(const uint8_t *ptr);
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uint32_t U32_AT(const uint8_t *ptr);
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uint64_t U64_AT(const uint8_t *ptr);
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uint16_t U16LE_AT(const uint8_t *ptr);
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uint32_t U32LE_AT(const uint8_t *ptr);
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uint64_t U64LE_AT(const uint8_t *ptr);
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uint64_t ntoh64(uint64_t x);
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uint64_t hton64(uint64_t x);
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void MakeFourCCString(uint32_t x, char *s);
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} // namespace android
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#endif // BYTE_UTILS_H
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