Change VideoRtpReceiver to create remote VideoTrack and VideoTrackSource.

webrtc/api/rtpreceiver.h

 /*
  *  Copyright 2015 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.
  */
 
 // This file contains classes that implement RtpReceiverInterface.
 // An RtpReceiver associates a MediaStreamTrackInterface with an underlying
 // transport (provided by AudioProviderInterface/VideoProviderInterface)
 
 #ifndef WEBRTC_API_RTPRECEIVER_H_
 #define WEBRTC_API_RTPRECEIVER_H_
 
 #include <string>
 
 #include "webrtc/api/mediastreamprovider.h"
 #include "webrtc/api/rtpreceiverinterface.h"
+#include "webrtc/api/videotracksource.h"
 #include "webrtc/base/basictypes.h"
+#include "webrtc/media/base/videobroadcaster.h"
 
 namespace webrtc {
 
 class AudioRtpReceiver : public ObserverInterface,
                          public AudioSourceInterface::AudioObserver,
                          public rtc::RefCountedObject<RtpReceiverInterface> {
  public:
   AudioRtpReceiver(AudioTrackInterface* track,
                    uint32_t ssrc,
                    AudioProviderInterface* provider);
@@ skipping 20 matching lines @@
 
   const std::string id_;
   const rtc::scoped_refptr<AudioTrackInterface> track_;
   const uint32_t ssrc_;
   AudioProviderInterface* provider_;  // Set to null in Stop().
   bool cached_track_enabled_;
 };
 
 class VideoRtpReceiver : public rtc::RefCountedObject<RtpReceiverInterface> {
  public:
-  VideoRtpReceiver(VideoTrackInterface* track,
+  VideoRtpReceiver(const std::string& track_id,
+                   rtc::Thread* worker_thread,
                    uint32_t ssrc,
                    VideoProviderInterface* provider);
 
   virtual ~VideoRtpReceiver();
 
+  rtc::scoped_refptr<VideoTrackInterface> video_track() const {
+    return track_.get();
+  }
+
   // RtpReceiverInterface implementation
   rtc::scoped_refptr<MediaStreamTrackInterface> track() const override {
     return track_.get();
   }
 
   std::string id() const override { return id_; }
 
   void Stop() override;
 
  private:
   std::string id_;
-  rtc::scoped_refptr<VideoTrackInterface> track_;
   uint32_t ssrc_;
   VideoProviderInterface* provider_;
+  // |broadcaster_| is needed since the decoder can only handle one sink.
+  // It might be better if the decoder can handle multiple sinks and consider
+  // the VideoSinkWants.
+  rtc::VideoBroadcaster broadcaster_;
+  // |source_| is held here to be able to change the state of the source when
+  // the VideoRtpReceiver is stopped.
+  rtc::scoped_refptr<VideoTrackSource> source_;
+  rtc::scoped_refptr<VideoTrackInterface> track_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_RTPRECEIVER_H_