Move ownership of cc:VideoLayer to webkit/media

webkit/media/webmediaplayer_ms.h

 // Copyright (c) 2012 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 WEBKIT_MEDIA_WEBMEDIAPLAYER_MS_H_
 #define WEBKIT_MEDIA_WEBMEDIAPLAYER_MS_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/synchronization/lock.h"
+#include "cc/layers/video_frame_provider.h"
 #include "googleurl/src/gurl.h"
 #include "media/filters/skcanvas_video_renderer.h"
 #include "skia/ext/platform_canvas.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebMediaPlayer.h"
 
 namespace WebKit {
 class WebFrame;
 class WebMediaPlayerClient;
 class WebVideoFrame;
 }
 
 namespace media {
 class MediaLog;
 }
 
+namespace webkit {
+class WebLayerImpl;
+}
+
 namespace webkit_media {
 
 class MediaStreamAudioRenderer;
 class MediaStreamClient;
 class VideoFrameProvider;
 class WebMediaPlayerDelegate;
 
 // WebMediaPlayerMS delegates calls from WebCore::MediaPlayerPrivate to
 // Chrome's media player when "src" is from media stream.
 //
 // WebMediaPlayerMS works with multiple objects, the most important ones are:
 //
 // VideoFrameProvider
 //   provides video frames for rendering.
 //
 // TODO(wjia): add AudioPlayer.
 // AudioPlayer
 //   plays audio streams.
 //
 // WebKit::WebMediaPlayerClient
 //   WebKit client of this media player object.
 class WebMediaPlayerMS
     : public WebKit::WebMediaPlayer,
+#ifdef REMOVE_WEBVIDEOFRAME
+      public cc::VideoFrameProvider,
+#endif
       public base::SupportsWeakPtr<WebMediaPlayerMS> {
  public:
   // Construct a WebMediaPlayerMS with reference to the client, and
   // a MediaStreamClient which provides VideoFrameProvider.
   WebMediaPlayerMS(WebKit::WebFrame* frame,
                    WebKit::WebMediaPlayerClient* client,
                    base::WeakPtr<WebMediaPlayerDelegate> delegate,
                    MediaStreamClient* media_stream_client,
                    media::MediaLog* media_log);
   virtual ~WebMediaPlayerMS();
@@ skipping 53 matching lines @@
   virtual bool didPassCORSAccessCheck() const OVERRIDE;
   virtual WebKit::WebMediaPlayer::MovieLoadType movieLoadType() const OVERRIDE;
 
   virtual float mediaTimeForTimeValue(float timeValue) const OVERRIDE;
 
   virtual unsigned decodedFrameCount() const OVERRIDE;
   virtual unsigned droppedFrameCount() const OVERRIDE;
   virtual unsigned audioDecodedByteCount() const OVERRIDE;
   virtual unsigned videoDecodedByteCount() const OVERRIDE;
 
+#ifndef REMOVE_WEBVIDEOFRAME
   virtual WebKit::WebVideoFrame* getCurrentFrame() OVERRIDE;
   virtual void putCurrentFrame(WebKit::WebVideoFrame* web_video_frame) OVERRIDE;
+#else
+  // VideoFrameProvider implementation.
+  virtual void SetVideoFrameProviderClient(
+      cc::VideoFrameProvider::Client* client) OVERRIDE;
+  virtual scoped_refptr<media::VideoFrame> GetCurrentFrame() OVERRIDE;
+  virtual void PutCurrentFrame(const scoped_refptr<media::VideoFrame>& frame)
+      OVERRIDE;
+#endif
 
  private:
   // The callback for VideoFrameProvider to signal a new frame is available.
   void OnFrameAvailable(const scoped_refptr<media::VideoFrame>& frame);
   // Need repaint due to state change.
   void RepaintInternal();
 
   // The callback for source to report error.
   void OnSourceError();
 
@@ skipping 13 matching lines @@
   WebKit::WebTimeRanges buffered_;
 
   // Used for DCHECKs to ensure methods calls executed in the correct thread.
   base::ThreadChecker thread_checker_;
 
   WebKit::WebMediaPlayerClient* client_;
 
   base::WeakPtr<WebMediaPlayerDelegate> delegate_;
 
   MediaStreamClient* media_stream_client_;
-  scoped_refptr<VideoFrameProvider> video_frame_provider_;
+  scoped_refptr<webkit_media::VideoFrameProvider> video_frame_provider_;
   bool paused_;
-  // |current_frame_| is updated only on main thread.
+
+  // |current_frame_| is updated only on main thread. The object it holds
+  // can be freed on the compositor thread if it is the last to hold a
+  // reference but media::VideoFrame is a thread-safe ref-pointer.
   scoped_refptr<media::VideoFrame> current_frame_;
   // |current_frame_used_| is updated on both main and compositing thread.
   // It's used to track whether |current_frame_| was painted for detecting
   // when to increase |dropped_frame_count_|.
   bool current_frame_used_;
   base::Lock current_frame_lock_;
   bool pending_repaint_;
+
+  scoped_ptr<webkit::WebLayerImpl> video_weblayer_;
+
+  // A pointer back to the compositor to inform it about state changes. This is
+  // not NULL while the compositor is actively using this webmediaplayer.
+  cc::VideoFrameProvider::Client* video_frame_provider_client_;
+
   bool received_first_frame_;
   bool sequence_started_;
   base::TimeDelta start_time_;
   unsigned total_frame_count_;
   unsigned dropped_frame_count_;
   media::SkCanvasVideoRenderer video_renderer_;
 
   scoped_refptr<MediaStreamAudioRenderer> audio_renderer_;
 
   scoped_refptr<media::MediaLog> media_log_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMediaPlayerMS);
 };
 
 }  // namespace webkit_media
 
 #endif  // WEBKIT_MEDIA_WEBMEDIAPLAYER_MS_H_