encoder_rtcp_feedback.h

Enable keyboard shortcuts

/*

 *  Copyright (c) 2012 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 VIDEO_ENCODER_RTCP_FEEDBACK_H_

#define VIDEO_ENCODER_RTCP_FEEDBACK_H_

#include <functional>

#include <vector>

#include "api/environment/environment.h"

#include "api/sequence_checker.h"

#include "api/units/time_delta.h"

#include "api/units/timestamp.h"

#include "call/rtp_video_sender_interface.h"

#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"

#include "rtc_base/system/no_unique_address.h"

#include "video/video_stream_encoder_interface.h"

namespace webrtc {

class VideoStreamEncoderInterface;

// This class passes feedback (such as key frame requests or loss notifications)

// from the RtpRtcp module.

class EncoderRtcpFeedback : public RtcpIntraFrameObserver,

                            public RtcpLossNotificationObserver {

 public:

  EncoderRtcpFeedback(

      const Environment& env,

      bool per_layer_keyframes,

      const std::vector<uint32_t>& ssrcs,

      VideoStreamEncoderInterface* encoder,

      std::function<std::vector<RtpSequenceNumberMap::Info>(

          uint32_t ssrc,

          const std::vector<uint16_t>& seq_nums)> get_packet_infos);

  ~EncoderRtcpFeedback() override = default;

  void OnReceivedIntraFrameRequest(uint32_t ssrc) override;

  // Implements RtcpLossNotificationObserver.

  void OnReceivedLossNotification(uint32_t ssrc,

                                  uint16_t seq_num_of_last_decodable,

                                  uint16_t seq_num_of_last_received,

                                  bool decodability_flag) override;

 private:

  const Environment env_;

  const std::vector<uint32_t> ssrcs_;

  const bool per_layer_keyframes_;

  const std::function<std::vector<RtpSequenceNumberMap::Info>(

      uint32_t ssrc,

      const std::vector<uint16_t>& seq_nums)>

      get_packet_infos_;

  VideoStreamEncoderInterface* const video_stream_encoder_;

  RTC_NO_UNIQUE_ADDRESS SequenceChecker packet_delivery_queue_;

  std::vector<Timestamp> time_last_packet_delivery_queue_

      RTC_GUARDED_BY(packet_delivery_queue_);

  const TimeDelta min_keyframe_send_interval_;

};

}  // namespace webrtc

#endif  // VIDEO_ENCODER_RTCP_FEEDBACK_H_