1 /* 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 #ifndef VIDEO_ENCODER_RTCP_FEEDBACK_H_ 11 #define VIDEO_ENCODER_RTCP_FEEDBACK_H_ 12 13 #include <vector> 14 15 #include "api/video/video_stream_encoder_interface.h" 16 #include "call/rtp_video_sender_interface.h" 17 #include "modules/rtp_rtcp/include/rtp_rtcp_defines.h" 18 #include "rtc_base/synchronization/mutex.h" 19 #include "system_wrappers/include/clock.h" 20 21 namespace webrtc { 22 23 class VideoStreamEncoderInterface; 24 25 // This class passes feedback (such as key frame requests or loss notifications) 26 // from the RtpRtcp module. 27 class EncoderRtcpFeedback : public RtcpIntraFrameObserver, 28 public RtcpLossNotificationObserver { 29 public: 30 EncoderRtcpFeedback(Clock* clock, 31 const std::vector<uint32_t>& ssrcs, 32 VideoStreamEncoderInterface* encoder); 33 ~EncoderRtcpFeedback() override = default; 34 35 void SetRtpVideoSender(const RtpVideoSenderInterface* rtp_video_sender); 36 37 void OnReceivedIntraFrameRequest(uint32_t ssrc) override; 38 39 // Implements RtcpLossNotificationObserver. 40 void OnReceivedLossNotification(uint32_t ssrc, 41 uint16_t seq_num_of_last_decodable, 42 uint16_t seq_num_of_last_received, 43 bool decodability_flag) override; 44 45 private: 46 bool HasSsrc(uint32_t ssrc); 47 48 Clock* const clock_; 49 const std::vector<uint32_t> ssrcs_; 50 const RtpVideoSenderInterface* rtp_video_sender_; 51 VideoStreamEncoderInterface* const video_stream_encoder_; 52 53 Mutex mutex_; 54 int64_t time_last_intra_request_ms_ RTC_GUARDED_BY(mutex_); 55 56 const int min_keyframe_send_interval_ms_; 57 }; 58 59 } // namespace webrtc 60 61 #endif // VIDEO_ENCODER_RTCP_FEEDBACK_H_ 62