Implement IPCs and VideoCapture::Client interfaces for texture capture

content/browser/renderer_host/media/video_capture_controller.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.
 //
 // VideoCaptureController is the glue between a VideoCaptureDevice and all
 // VideoCaptureHosts that have connected to it. A controller exists on behalf of
 // one (and only one) VideoCaptureDevice; both are owned by the
 // VideoCaptureManager.
 //
 // The VideoCaptureController is responsible for:
@@ skipping 80 matching lines @@
   // kInvalidMediaCaptureSessionId if the indicated client was not registered.
   int RemoveClient(const VideoCaptureControllerID& id,
                    VideoCaptureControllerEventHandler* event_handler);
 
   int GetClientCount();
 
   // API called directly by VideoCaptureManager in case the device is
   // prematurely closed.
   void StopSession(int session_id);
 
-  // Return a buffer previously given in
-  // VideoCaptureControllerEventHandler::OnBufferReady.
+  // Return a buffer with id |buffer_id| previously given in
+  // VideoCaptureControllerEventHandler::OnBufferReady. In the case that the
+  // buffer was backed by a texture, |sync_point| will be waited on before
+  // destroying or recycling the texture, to synchronize with texture users in
+  // the renderer process.
   void ReturnBuffer(const VideoCaptureControllerID& id,
                     VideoCaptureControllerEventHandler* event_handler,
-                    int buffer_id);
+                    int buffer_id,
+                    uint32 sync_point);
 
   const media::VideoCaptureFormat& GetVideoCaptureFormat() const;
 
  private:
   class VideoCaptureDeviceClient;
 
   struct ControllerClient;
   typedef std::list<ControllerClient*> ControllerClients;
 
   // Worker functions on IO thread. Called by the VideoCaptureDeviceClient.
-  void DoIncomingCapturedI420BufferOnIOThread(
-      scoped_refptr<media::VideoCaptureDevice::Client::Buffer> buffer,
-      const gfx::Size& dimensions,
-      int frame_rate,
+  void DoIncomingCapturedVideoFrameOnIOThread(
+      const scoped_refptr<media::VideoCaptureDevice::Client::Buffer>& buffer,
+      const media::VideoCaptureFormat& format,
+      const scoped_refptr<media::VideoFrame>& frame,
       base::TimeTicks timestamp);
   void DoErrorOnIOThread();
   void DoDeviceStoppedOnIOThread();
   void DoBufferDestroyedOnIOThread(int buffer_id_to_drop);
 
   // Find a client of |id| and |handler| in |clients|.
   ControllerClient* FindClient(
       const VideoCaptureControllerID& id,
       VideoCaptureControllerEventHandler* handler,
       const ControllerClients& clients);
@@ skipping 16 matching lines @@
   media::VideoCaptureFormat video_capture_format_;
 
   base::WeakPtrFactory<VideoCaptureController> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureController);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_CONTROLLER_H_