Integrate VDA with WebRTC.

content/renderer/media/renderer_gpu_video_decoder_factories.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 CONTENT_RENDERER_MEDIA_RENDERER_GPU_VIDEO_DECODER_FACTORIES_H_
 #define CONTENT_RENDERER_MEDIA_RENDERER_GPU_VIDEO_DECODER_FACTORIES_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 13 matching lines @@
 class GpuChannelHost;
 class WebGraphicsContext3DCommandBufferImpl;
 
 // Glue code to expose functionality needed by media::GpuVideoDecoder to
 // RenderViewImpl.  This class is entirely an implementation detail of
 // RenderViewImpl and only has its own header to allow extraction of its
 // implementation from render_view_impl.cc which is already far too large.
 //
 // The public methods of the class can be called from any thread, and are
 // internally trampolined to the appropriate thread.  GPU/GL-related calls go to
-// the constructor-argument loop (mostly that's the compositor thread, or the
-// renderer thread if threaded compositing is disabled), and shmem-related calls
-// go to the render thread.
+// the constructor-argument loop. Typically this is the compositor thread,
+// unless threaded-compositing is disabled, when it'll be the renderer thread,
+// or a special-purpose thread e.g. for WebRTC. shmem-related calls go to the
+// render thread.
 class CONTENT_EXPORT RendererGpuVideoDecoderFactories
     : public media::GpuVideoDecoder::Factories {
  public:
   // Takes a ref on |gpu_channel_host| and tests |context| for loss before each
   // use.
   RendererGpuVideoDecoderFactories(
       GpuChannelHost* gpu_channel_host,
       const scoped_refptr<base::MessageLoopProxy>& message_loop,
       WebGraphicsContext3DCommandBufferImpl* wgc3dcbi);
 
   // media::GpuVideoDecoder::Factories implementation.
   virtual media::VideoDecodeAccelerator* CreateVideoDecodeAccelerator(
       media::VideoCodecProfile profile,
       media::VideoDecodeAccelerator::Client* client) OVERRIDE;
   virtual bool CreateTextures(int32 count, const gfx::Size& size,
                               std::vector<uint32>* texture_ids,
                               uint32 texture_target) OVERRIDE;
   virtual void DeleteTexture(uint32 texture_id) OVERRIDE;
   virtual void ReadPixels(uint32 texture_id,
                           uint32 texture_target,
                           const gfx::Size& size,
                           const SkBitmap& pixels) OVERRIDE;
   virtual base::SharedMemory* CreateSharedMemory(size_t size) OVERRIDE;
   virtual scoped_refptr<base::MessageLoopProxy> GetMessageLoop() OVERRIDE;
   virtual void Abort() OVERRIDE;
   virtual bool IsAborted() OVERRIDE;
 
+  // Makes a copy of |this|.
+  scoped_refptr<RendererGpuVideoDecoderFactories> Clone();
+
  protected:
   friend class base::RefCountedThreadSafe<RendererGpuVideoDecoderFactories>;
   virtual ~RendererGpuVideoDecoderFactories();
 
  private:
   // Helper for the constructor to acquire the ContentGLContext on the
   // compositor thread (when it is enabled).
   void AsyncGetContext(WebGraphicsContext3DCommandBufferImpl* context);
 
   // Async versions of the public methods.  They use output parameters instead
@@ skipping 36 matching lines @@
   // Shared memory segment which is returned by the CreateSharedMemory()
   // function.
   scoped_ptr<base::SharedMemory> shared_memory_segment_;
 
   // Bitmap returned by ReadPixels().
   SkBitmap read_pixels_bitmap_;
 
   // Textures returned by the CreateTexture() function.
   std::vector<uint32> created_textures_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(RendererGpuVideoDecoderFactories);

[Ami GONE FROM CHROMIUM, 2013/06/13 20:10:03]

Now that you have a no-arg ctor this is sort of a lie.
You want DISALLOW_COPY_AND_ASSIGN and to declare a private do-nothing ctor
explicitly at the top of the private: section.

[wuchengli, 2013/06/18 16:11:23]

Done.

 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_RENDERER_GPU_VIDEO_DECODER_FACTORIES_H_