/*
 *  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 WEBRTC_MODULES_VIDEO_CODING_H264_SPS_PPS_TRACKER_H_
#define WEBRTC_MODULES_VIDEO_CODING_H264_SPS_PPS_TRACKER_H_

#include <cstdint>
#include <map>
#include <memory>
#include <vector>

#include "webrtc/modules/include/module_common_types.h"

namespace webrtc {

class VCMPacket;

namespace video_coding {

class H264SpsPpsTracker {
 public:
  enum PacketAction { kInsert, kDrop, kRequestKeyframe };

  PacketAction CopyAndFixBitstream(VCMPacket* packet);

  void InsertSpsPpsNalus(const std::vector<uint8_t>& sps,
                         const std::vector<uint8_t>& pps);

 private:
  struct PpsInfo {
    int sps_id = -1;
    size_t size = 0;
    std::unique_ptr<uint8_t[]> data;
  };

  struct SpsInfo {
    size_t size = 0;
    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  // WEBRTC_MODULES_VIDEO_CODING_H264_SPS_PPS_TRACKER_H_