mirror of
https://github.com/DrKLO/Telegram.git
synced 2024-12-23 06:50:36 +01:00
57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
/*
|
|
* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#include "common_video/h265/h265_common.h"
|
|
#include "common_video/h264/h264_common.h"
|
|
|
|
namespace webrtc {
|
|
namespace H265 {
|
|
|
|
const uint8_t kNaluTypeMask = 0x7E;
|
|
|
|
std::vector<NaluIndex> FindNaluIndices(const uint8_t* buffer,
|
|
size_t buffer_size) {
|
|
std::vector<H264::NaluIndex> indices = H264::FindNaluIndices(buffer, buffer_size);
|
|
std::vector<NaluIndex> results;
|
|
for (auto& index : indices) {
|
|
results.push_back({index.start_offset, index.payload_start_offset, index.payload_size});
|
|
}
|
|
return results;
|
|
}
|
|
|
|
NaluType ParseNaluType(uint8_t data) {
|
|
return static_cast<NaluType>((data & kNaluTypeMask) >> 1);
|
|
}
|
|
|
|
std::vector<uint8_t> ParseRbsp(const uint8_t* data, size_t length) {
|
|
return H264::ParseRbsp(data, length);
|
|
}
|
|
|
|
void WriteRbsp(const uint8_t* bytes, size_t length, rtc::Buffer* destination) {
|
|
H264::WriteRbsp(bytes, length, destination);
|
|
}
|
|
|
|
uint32_t Log2(uint32_t value) {
|
|
uint32_t result = 0;
|
|
// If value is not a power of two an additional bit is required
|
|
// to account for the ceil() of log2() below.
|
|
if ((value & (value - 1)) != 0) {
|
|
++result;
|
|
}
|
|
while (value > 0) {
|
|
value >>= 1;
|
|
++result;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
} // namespace H265
|
|
} // namespace webrtc
|