Implement a source for remote video tracks.

content/renderer/media/webrtc/webrtc_video_sink_adapter.h

-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_SINK_ADAPTER_H_
-#define CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_SINK_ADAPTER_H_
-
-#include "base/memory/weak_ptr.h"
-#include "content/common/content_export.h"
-#include "content/public/renderer/media_stream_video_sink.h"
-#include "third_party/libjingle/source/talk/app/webrtc/mediastreaminterface.h"
-
-namespace base {
-class MessageLoopProxy;
-}
-
-namespace content {
-
-// WebRtcVideoSinkAdapter acts as the middle man between a
-// webrtc:::VideoTrackInterface and a content::MediaStreamVideoSink.
-// It is responsible for translating video data from a libjingle video type
-// to a chrome video type.
-class CONTENT_EXPORT WebRtcVideoSinkAdapter
-    : NON_EXPORTED_BASE(public webrtc::VideoRendererInterface),
-      NON_EXPORTED_BASE(public webrtc::ObserverInterface),
-      public base::SupportsWeakPtr<WebRtcVideoSinkAdapter> {
- public:
-  WebRtcVideoSinkAdapter(webrtc::VideoTrackInterface* video_track,
-                         MediaStreamVideoSink* sink);
-  virtual ~WebRtcVideoSinkAdapter();
-
-  MediaStreamVideoSink* sink() const { return sink_; }
-
- protected:
-  // webrtc::VideoRendererInterface implementation. May be called on
-  // a different thread.
-  virtual void SetSize(int width, int height) OVERRIDE;
-  virtual void RenderFrame(const cricket::VideoFrame* frame) OVERRIDE;
-
-  // webrtc::ObserverInterface implementation.
-  // TODO(perkj): OnChanged should be implemented on a common base class used
-  // for both WebRtc Audio and Video tracks.
-  virtual void OnChanged() OVERRIDE;
-
- private:
-  void DoRenderFrameOnMainThread(scoped_refptr<media::VideoFrame> video_frame);
-
-  scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
-  MediaStreamVideoSink* sink_;
-  // The video track the renderer is connected to.
-  scoped_refptr<webrtc::VideoTrackInterface> video_track_;
-  webrtc::MediaStreamTrackInterface::TrackState state_;
-  bool track_enabled_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebRtcVideoSinkAdapter);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_SINK_ADAPTER_H_