Send hardware video frames with mailboxes.

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 30 matching lines @@
   // 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;
+  // Creates textures and produces them into mailboxes. Returns a sync point to
+  // wait on before using the mailboxes, or 0 on failure.
+  virtual uint32 CreateTextures(
+      int32 count, const gfx::Size& size,
+      std::vector<uint32>* texture_ids,
+      std::vector<gpu::Mailbox>* texture_mailboxes,
+      uint32 texture_target) OVERRIDE;
   virtual void DeleteTexture(uint32 texture_id) OVERRIDE;
+  virtual void WaitSyncPoint(uint32 sync_point) 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;
 
  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
   // of return values and each takes a WaitableEvent* param to signal completion
   // (except for DeleteTexture, which is fire-and-forget).
   // AsyncCreateSharedMemory runs on the renderer thread and the rest run on
   // |message_loop_|.
   // The AsyncCreateVideoDecodeAccelerator returns its output in the vda_
   // member.
   void AsyncCreateVideoDecodeAccelerator(
       media::VideoCodecProfile profile,
       media::VideoDecodeAccelerator::Client* client);
   void AsyncCreateTextures(int32 count, const gfx::Size& size,
-                           uint32 texture_target);
+                           uint32 texture_target, uint32* sync_point);
   void AsyncDeleteTexture(uint32 texture_id);
+  void AsyncWaitSyncPoint(uint32 sync_point);
   void AsyncReadPixels(uint32 texture_id, uint32 texture_target,
                        const gfx::Size& size);
   void AsyncCreateSharedMemory(size_t size);
   void AsyncDestroyVideoDecodeAccelerator();
 
   scoped_refptr<base::MessageLoopProxy> message_loop_;
   scoped_refptr<GpuChannelHost> gpu_channel_host_;
   base::WeakPtr<WebGraphicsContext3DCommandBufferImpl> context_;
 
   // This event is signaled if we have been asked to Abort().
@@ skipping 13 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_;
+  std::vector<gpu::Mailbox> created_texture_mailboxes_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(RendererGpuVideoDecoderFactories);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_RENDERER_GPU_VIDEO_DECODER_FACTORIES_H_