Adds MediaStreamSource, MediaStreamAudioSource and MediaStreamVideoCaptureDeviceSource

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/media_stream_source.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 MediaStreamSource {
  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 AddTrack(const blink::WebMediaStreamTrack& track);
   void RemoveTrack(const blink::WebMediaStreamTrack& track);
 
+  webrtc::VideoSourceInterface* GetAdapter() {

[Ronghua Wu (Left Chromium), 2014/01/10 20:01:08]

I think the derived class of this class shouldn't need to know anything about
libjingle. Which is why I didn't expose VideoSourceInterface in my cl.

This way the chrome capturer implementation doesn't need to use
cricket::VideoCapturer. The only interface will be DeliverVideoFrame.

[perkj_chrome, 2014/01/12 19:34:38]

I don't think that will work until we have properly implemented the
MediaStreamVideo track and moved all adapter layers to where we do
PeerConnection::AddStream. 

We currently support creating new tracks of existing sources so in order to do
that we need to expose the old source interface.  

+    return adapter_;
+  }
+
  protected:
+  void SetAdapter(
+      const scoped_refptr<webrtc::VideoSourceInterface>& adapter);
   // 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);
+  virtual ~MediaStreamVideoSource();
 
-  virtual ~MediaStreamVideoSource();
+ private:
+  scoped_refptr<webrtc::VideoSourceInterface> adapter_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_VIDEO_SOURCE_H_