media: Make GpuMemoryBuffers VideoFrame copies asynchronous.

media/renderers/video_renderer_impl.h

 // Copyright 2013 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 MEDIA_RENDERERS_VIDEO_RENDERER_IMPL_H_
 #define MEDIA_RENDERERS_VIDEO_RENDERER_IMPL_H_
 
 #include <deque>
 
 #include "base/memory/ref_counted.h"
@@ skipping 34 matching lines @@
       public base::PlatformThread::Delegate {
  public:
   // |decoders| contains the VideoDecoders to use when initializing.
   //
   // Implementors should avoid doing any sort of heavy work in this method and
   // instead post a task to a common/worker thread to handle rendering.  Slowing
   // down the video thread may result in losing synchronization with audio.
   //
   // Setting |drop_frames_| to true causes the renderer to drop expired frames.
   VideoRendererImpl(
-      const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
+      const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
+      const scoped_refptr<base::TaskRunner>& worker_task_runner,
       VideoRendererSink* sink,
       ScopedVector<VideoDecoder> decoders,
       bool drop_frames,
       const scoped_refptr<GpuVideoAcceleratorFactories>& gpu_factories,
       const scoped_refptr<MediaLog>& media_log);
   ~VideoRendererImpl() override;
 
   // VideoRenderer implementation.
   void Initialize(DemuxerStream* stream,
                   const PipelineStatusCB& init_cb,
@@ skipping 24 matching lines @@
   }
 
  private:
   // Creates a dedicated |thread_| for video rendering.
   void CreateVideoThread();
 
   // Callback for |video_frame_stream_| initialization.
   void OnVideoFrameStreamInitialized(bool success);
 
   // Callback for |video_frame_stream_| to deliver decoded video frames and
+  // report video decoding status. If a frame is available the planes will be
+  // copied asynchronously and FrameReady will be called once finished copying.
+  void FrameReadyForCopyingToGpuMemoryBuffers(
+      VideoFrameStream::Status status,
+      const scoped_refptr<VideoFrame>& frame);
+
+  // Callback for |video_frame_stream_| to deliver decoded video frames and
   // report video decoding status.
   void FrameReady(VideoFrameStream::Status status,
                   const scoped_refptr<VideoFrame>& frame);
 
   // Helper method for adding a frame to |ready_frames_|.
   void AddReadyFrame_Locked(const scoped_refptr<VideoFrame>& frame);
 
   // Helper method that schedules an asynchronous read from the
   // |video_frame_stream_| as long as there isn't a pending read and we have
   // capacity.
@@ skipping 183 matching lines @@
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<VideoRendererImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoRendererImpl);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_RENDERERS_VIDEO_RENDERER_IMPL_H_