PPB_VideoDecoder_Dev::Initialize is now synchronous!

content/common/gpu/media/gpu_video_decode_accelerator.h

 // Copyright (c) 2011 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_COMMON_GPU_MEDIA_GPU_VIDEO_DECODE_ACCELERATOR_H_
 #define CONTENT_COMMON_GPU_MEDIA_GPU_VIDEO_DECODE_ACCELERATOR_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 25 matching lines @@
   virtual void NotifyInitializeDone() OVERRIDE;
   virtual void NotifyEndOfStream() OVERRIDE;
   virtual void NotifyError(media::VideoDecodeAccelerator::Error error) OVERRIDE;
   virtual void NotifyEndOfBitstreamBuffer(int32 bitstream_buffer_id) OVERRIDE;
   virtual void NotifyFlushDone() OVERRIDE;
   virtual void NotifyResetDone() OVERRIDE;
 
   // Function to delegate sending to actual sender.
   virtual bool Send(IPC::Message* message);
 
-  // Initialize the accelerator with the given configuration.
-  void Initialize(const std::vector<uint32>& configs);
+  // Initialize the accelerator with the given configuration and send the
+  // |init_done_msg| when done.
+  void Initialize(const std::vector<uint32>& configs,
+                  IPC::Message* init_done_msg);
 
  private:
 
   // Handlers for IPC messages.
   void OnDecode(base::SharedMemoryHandle handle, int32 id, int32 size);
   void OnAssignPictureBuffers(
       const std::vector<int32>& buffer_ids,
       const std::vector<uint32>& texture_ids,
       const std::vector<gfx::Size>& sizes);
   void OnReusePictureBuffer(
       int32 picture_buffer_id);
   void OnFlush();
   void OnReset();
   void OnDestroy();
 
   // Pointer to the IPC message sender.
   IPC::Message::Sender* sender_;
 
+  // Message to Send() when initialization is done.  Is only non-NULL during
+  // initialization and is owned by the IPC channel underlying the
+  // GpuCommandBufferStub.
+  IPC::Message* init_done_msg_;
+
   // Route ID to communicate with the host.
   int32 host_route_id_;
 
   // Unowned pointer to the underlying GpuCommandBufferStub.
   GpuCommandBufferStub* stub_;
 
   // Pointer to the underlying VideoDecodeAccelerator.
   scoped_refptr<media::VideoDecodeAccelerator> video_decode_accelerator_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(GpuVideoDecodeAccelerator);
 };
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_GPU_VIDEO_DECODE_ACCELERATOR_H_