Send hardware video frames with mailboxes.

media/filters/gpu_video_decoder.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 MEDIA_FILTERS_GPU_VIDEO_DECODER_H_
 #define MEDIA_FILTERS_GPU_VIDEO_DECODER_H_
 
 #include <list>
 #include <map>
 #include <utility>
@@ skipping 31 matching lines @@
     // Caller owns returned pointer.
     virtual VideoDecodeAccelerator* CreateVideoDecodeAccelerator(
         VideoCodecProfile, VideoDecodeAccelerator::Client*) = 0;
 
     // Allocate & delete native textures.
     virtual bool CreateTextures(int32 count, const gfx::Size& size,
                                 std::vector<uint32>* texture_ids,
                                 uint32 texture_target) = 0;
     virtual void DeleteTexture(uint32 texture_id) = 0;
 
+    virtual gpu::Mailbox ProduceTextureToMailbox(uint32 texture_id) = 0;
+    virtual void ConsumeMailboxToTexture(const gpu::Mailbox& mailbox,
+                                         uint32 texture_id) = 0;
+
     // Read pixels from a native texture and store into |pixels| as RGBA.
     virtual void ReadPixels(uint32 texture_id, uint32 texture_target,
                             const gfx::Size& size, const SkBitmap& pixels) = 0;
 
     // Allocate & return a shared memory segment.  Caller is responsible for
     // Close()ing the returned pointer.
     virtual base::SharedMemory* CreateSharedMemory(size_t size) = 0;
 
     // Returns the message loop the VideoDecodeAccelerator runs on.
     virtual scoped_refptr<base::MessageLoopProxy> GetMessageLoop() = 0;
@@ skipping 63 matching lines @@
 
   // Enqueue a frame for later delivery (or drop it on the floor if a
   // vda->Reset() is in progress) and trigger out-of-line delivery of the oldest
   // ready frame to the client if there is a pending read.  A NULL |frame|
   // merely triggers delivery, and requires the ready_video_frames_ queue not be
   // empty.
   void EnqueueFrameAndTriggerFrameDelivery(
       const scoped_refptr<VideoFrame>& frame);
 
   // Indicate the picturebuffer can be reused by the decoder.
-  void ReusePictureBuffer(int64 picture_buffer_id);
+  void ReusePictureBuffer(int64 picture_buffer_id, gpu::Mailbox mailbox);
 
   void RecordBufferData(
       const BitstreamBuffer& bitstream_buffer, const DecoderBuffer& buffer);
   void GetBufferData(int32 id, base::TimeDelta* timetamp,
                      gfx::Rect* visible_rect, gfx::Size* natural_size);
 
   // Set |vda_| and |weak_vda_| on the VDA thread (in practice the render
   // thread).
   void SetVDA(VideoDecodeAccelerator* vda);
 
@@ skipping 91 matching lines @@
   // Set during ProvidePictureBuffers(), used for checking and implementing
   // HasAvailableOutputFrames().
   int available_pictures_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuVideoDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_GPU_VIDEO_DECODER_H_