Inform jitter buffer about FlexFEC protection.

webrtc/video/video_receive_stream.h

 /*
  *  Copyright (c) 2013 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.
  */
 
@@ skipping 13 matching lines @@
 #include "webrtc/video/rtp_stream_receiver.h"
 #include "webrtc/video/rtp_streams_synchronizer.h"
 #include "webrtc/video/transport_adapter.h"
 #include "webrtc/video/video_stream_decoder.h"
 #include "webrtc/video_receive_stream.h"
 
 namespace webrtc {
 
 class CallStats;
 class CongestionController;
+class FlexfecProtectionMediator;
 class IvfFileWriter;
 class ProcessThread;
 class RTPFragmentationHeader;
 class VoiceEngine;
 class VieRemb;
 class VCMTiming;
 class VCMJitterEstimator;
 
 namespace internal {
 
 class VideoReceiveStream : public webrtc::VideoReceiveStream,
                            public rtc::VideoSinkInterface<VideoFrame>,
                            public EncodedImageCallback,
                            public NackSender,
                            public KeyFrameRequestSender,
                            public video_coding::OnCompleteFrameCallback {
  public:
   VideoReceiveStream(int num_cpu_cores,
                      CongestionController* congestion_controller,
                      PacketRouter* packet_router,
                      VideoReceiveStream::Config config,
                      webrtc::VoiceEngine* voice_engine,
                      ProcessThread* process_thread,
                      CallStats* call_stats,
-                     VieRemb* remb);
+                     VieRemb* remb,
+                     FlexfecProtectionMediator* flexfec_protection_mediator);
   ~VideoReceiveStream() override;
 
   void SignalNetworkState(NetworkState state);
   bool DeliverRtcp(const uint8_t* packet, size_t length);
   bool DeliverRtp(const uint8_t* packet,
                   size_t length,
                   const PacketTime& packet_time);
 
   bool OnRecoveredPacket(const uint8_t* packet, size_t length);
 
@@ skipping 30 matching lines @@
   // Calling this method will close and finalize any current log.
   // Giving rtc::kInvalidPlatformFileValue disables logging.
   // If a frame to be written would make the log too large the write fails and
   // the log is closed and finalized. A |byte_limit| of 0 means no limit.
   void EnableEncodedFrameRecording(rtc::PlatformFile file,
                                    size_t byte_limit) override;
 
  private:
   static bool DecodeThreadFunction(void* ptr);
   void Decode();
 

[brandtr, 2017/01/24 13:02:49]

The methods below are not strictly needed, but I thought it made sense to
declare these here to clarify the assumptions around their usage.

+  // The return value of this method depends on what FlexfecReceiveStreams are
+  // registered in Call, which might change during the lifetime of |this|.
+  bool IsFlexfecEnabled() const;
+
+  // The return value of this method is constant during the lifetime of |this|.
+  bool IsUlpfecEnabled() const;
+
   TransportAdapter transport_adapter_;
   const VideoReceiveStream::Config config_;
   const int num_cpu_cores_;
   ProcessThread* const process_thread_;
   Clock* const clock_;
 
   rtc::PlatformThread decode_thread_;
 
   CongestionController* const congestion_controller_;
   CallStats* const call_stats_;
+  FlexfecProtectionMediator* const flexfec_protection_mediator_;
 
   std::unique_ptr<VCMTiming> timing_;  // Jitter buffer experiment.
   vcm::VideoReceiver video_receiver_;
   std::unique_ptr<rtc::VideoSinkInterface<VideoFrame>> incoming_video_stream_;
   ReceiveStatisticsProxy stats_proxy_;
   RtpStreamReceiver rtp_stream_receiver_;
   std::unique_ptr<VideoStreamDecoder> video_stream_decoder_;
   RtpStreamsSynchronizer rtp_stream_sync_;
 
   rtc::CriticalSection ivf_writer_lock_;
   std::unique_ptr<IvfFileWriter> ivf_writer_ GUARDED_BY(ivf_writer_lock_);
 
   // Members for the new jitter buffer experiment.
   const bool jitter_buffer_experiment_;
   std::unique_ptr<VCMJitterEstimator> jitter_estimator_;
   std::unique_ptr<video_coding::FrameBuffer> frame_buffer_;
 };
 }  // namespace internal
 }  // namespace webrtc
 
 #endif  // WEBRTC_VIDEO_VIDEO_RECEIVE_STREAM_H_