Implements MediaStreamVideoSource.

content/renderer/media/media_stream_video_source.h

 // Copyright 2014 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_MEDIA_STREAM_VIDEO_SOURCE_H_
 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_VIDEO_SOURCE_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
 #include "content/renderer/media/media_stream_source_extra_data.h"
+#include "content/renderer/media/webrtc/webrtc_video_source_adapter.h"
 #include "third_party/WebKit/public/platform/WebMediaConstraints.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
 
 namespace media {
 class VideoFrame;
 }
 
 namespace content {
 
 // MediaStreamVideoSource is an interface used for sending video frames to a
 // MediaStreamVideoTrack.
 // http://dev.w3.org/2011/webrtc/editor/getusermedia.html
 // All methods calls will be done from the main render thread.
 class CONTENT_EXPORT MediaStreamVideoSource
     : public MediaStreamSourceExtraData {
  public:
+  MediaStreamVideoSource();
+
   // Puts |track| in the registered tracks list. Will later
   // deliver frames to it according to |constraints|.
   void AddTrack(const blink::WebMediaStreamTrack& track,
                 const blink::WebMediaConstraints& constraints);
 
   // Removes |track| from the registered tracks list, i.e. will stop delivering
   // frame to |track|.
   void RemoveTrack(const blink::WebMediaStreamTrack& track);
 
  protected:
   // Sets ready state and notifies the ready state to all registered tracks.
   virtual void SetReadyState(blink::WebMediaStreamSource::ReadyState state);
 
   // Delivers |frame| to registered tracks according to their constraints.
   virtual void DeliverVideoFrame(const scoped_refptr<media::VideoFrame>& frame);
 
+  // For testing only.
+  void SetMsFactory(MediaStreamDependencyFactory* factory);

[Jói, 2014/01/09 11:18:13]

If it's only for testing, name it SetMsFactoryForTesting, that way the Chromium
presubmit will help ensure it is only used by testing code.

+
   virtual ~MediaStreamVideoSource();
+
+ private:

[Jói, 2014/01/09 11:18:13]

missing DISALLOW_COPY_AND_ASSIGN

+  typedef std::vector<WebRtcVideoSourceAdapter*> WebRtcVideoSourceAdapters;
+
+  WebRtcVideoSourceAdapters adapters_;
+  MediaStreamDependencyFactory* factory_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_VIDEO_SOURCE_H_