58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
/*
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* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "common_video/h265/h265_common.h"
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#include "common_video/h264/h264_common.h"
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namespace webrtc {
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namespace H265 {
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const uint8_t kNaluTypeMask = 0x7E;
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std::vector<NaluIndex> FindNaluIndices(const uint8_t* buffer,
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size_t buffer_size) {
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std::vector<H264::NaluIndex> indices = H264::FindNaluIndices(buffer, buffer_size);
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std::vector<NaluIndex> results;
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for (auto& index : indices) {
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results.push_back({index.start_offset, index.payload_start_offset, index.payload_size});
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}
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return results;
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}
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NaluType ParseNaluType(uint8_t data) {
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return static_cast<NaluType>((data & kNaluTypeMask) >> 1);
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}
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std::vector<uint8_t> ParseRbsp(const uint8_t* data, size_t length) {
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return H264::ParseRbsp(data, length);
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}
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void WriteRbsp(const uint8_t* bytes, size_t length, rtc::Buffer* destination) {
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H264::WriteRbsp(bytes, length, destination);
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}
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uint32_t Log2(uint32_t value) {
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uint32_t result = 0;
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// If value is not a power of two an additional bit is required
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// to account for the ceil() of log2() below.
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if ((value & (value - 1)) != 0) {
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++result;
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}
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while (value > 0) {
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value >>= 1;
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++result;
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}
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return result;
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}
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} // namespace H265
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} // namespace webrtc
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