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/*
* Copyright (c) 2016 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.
*/
#ifndef MODULES_VIDEO_CODING_H264_SPS_PPS_TRACKER_H_
#define MODULES_VIDEO_CODING_H264_SPS_PPS_TRACKER_H_
#include <cstddef>
#include <cstdint>
#include <map>
#include <memory>
#include <vector>
#include "api/array_view.h"
#include "modules/rtp_rtcp/source/rtp_video_header.h"
#include "rtc_base/copy_on_write_buffer.h"
namespace webrtc {
namespace video_coding {
class H264SpsPpsTracker {
public:
enum PacketAction { kInsert, kDrop, kRequestKeyframe };
struct FixedBitstream {
PacketAction action;
rtc::CopyOnWriteBuffer bitstream;
};
H264SpsPpsTracker();
~H264SpsPpsTracker();
// Returns fixed bitstream and modifies `video_header`.
FixedBitstream CopyAndFixBitstream(rtc::ArrayView<const uint8_t> bitstream,
RTPVideoHeader* video_header);
void InsertSpsPpsNalus(const std::vector<uint8_t>& sps,
const std::vector<uint8_t>& pps);
private:
struct PpsInfo {
PpsInfo();
PpsInfo(PpsInfo&& rhs);
PpsInfo& operator=(PpsInfo&& rhs);
~PpsInfo();
int sps_id = -1;
size_t size = 0;
std::unique_ptr<uint8_t[]> data;
};
struct SpsInfo {
SpsInfo();
SpsInfo(SpsInfo&& rhs);
SpsInfo& operator=(SpsInfo&& rhs);
~SpsInfo();
size_t size = 0;
int width = -1;
int height = -1;
std::unique_ptr<uint8_t[]> data;
};
std::map<uint32_t, PpsInfo> pps_data_;
std::map<uint32_t, SpsInfo> sps_data_;
};
} // namespace video_coding
} // namespace webrtc
#endif // MODULES_VIDEO_CODING_H264_SPS_PPS_TRACKER_H_
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