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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 <vector>
#include "api/array_view.h"
#include "modules/rtp_rtcp/source/rtp_video_header.h"
#include "rtc_base/buffer.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;
CopyOnWriteBuffer bitstream;
};
H264SpsPpsTracker() = default;
H264SpsPpsTracker(const H264SpsPpsTracker& other) = default;
H264SpsPpsTracker& operator=(const H264SpsPpsTracker& other) = default;
~H264SpsPpsTracker() = default;
// Returns fixed bitstream and modifies `video_header`.
FixedBitstream CopyAndFixBitstream(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 {
int sps_id = -1;
Buffer data;
};
struct SpsInfo {
int width = -1;
int height = -1;
Buffer data;
};
std::map<int, PpsInfo> pps_data_;
std::map<int, SpsInfo> sps_data_;
};
} // namespace video_coding
} // namespace webrtc
#endif // MODULES_VIDEO_CODING_H264_SPS_PPS_TRACKER_H_
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