ReleaseOutputBuffer to surface back and front buffers where possible.

content/common/gpu/media/android_deferred_rendering_backing_strategy.h

 // Copyright 2015 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_ANDROID_DEFERRED_RENDERING_BACKING_STRATEGY_H_
 #define CONTENT_COMMON_GPU_MEDIA_ANDROID_DEFERRED_RENDERING_BACKING_STRATEGY_H_
 
 #include <stdint.h>
+#include <vector>
 
 #include "base/macros.h"
 #include "content/common/content_export.h"
 #include "content/common/gpu/media/android_video_decode_accelerator.h"
 
 namespace gl {
 class GLImage;
 }
 
 namespace gpu {
@@ skipping 14 matching lines @@
 // implementation to talk to MediaCodec.
 class CONTENT_EXPORT AndroidDeferredRenderingBackingStrategy
     : public AndroidVideoDecodeAccelerator::BackingStrategy {
  public:
   explicit AndroidDeferredRenderingBackingStrategy(
       AVDAStateProvider* state_provider);
   ~AndroidDeferredRenderingBackingStrategy() override;
 
   // AndroidVideoDecodeAccelerator::BackingStrategy
   gfx::ScopedJavaSurface Initialize(int surface_view_id) override;
-  void Cleanup(bool have_context,
-               const AndroidVideoDecodeAccelerator::OutputBufferMap&) override;
+  void Cleanup(
+      bool have_context,
+      const AndroidVideoDecodeAccelerator::OutputBufferMap& buffers) override;
   scoped_refptr<gfx::SurfaceTexture> GetSurfaceTexture() const override;
   uint32_t GetTextureTarget() const override;
   gfx::Size GetPictureBufferSize() const override;
-  void UseCodecBufferForPictureBuffer(int32_t codec_buffer_index,
-                                      const media::PictureBuffer&) override;
+  void UseCodecBufferForPictureBuffer(
+      int32_t codec_buffer_index,
+      const media::PictureBuffer& picture_buffer) override;
   void AssignOnePictureBuffer(const media::PictureBuffer&, bool) override;
-  void ReuseOnePictureBuffer(const media::PictureBuffer&) override;
-  void CodecChanged(media::VideoCodecBridge*) override;
+  void ReuseOnePictureBuffer(
+      const media::PictureBuffer& picture_buffer) override;
+  void MaybeRenderEarly() override;
+  void CodecChanged(media::VideoCodecBridge* codec) override;
   void ReleaseCodecBuffers(
       const AndroidVideoDecodeAccelerator::OutputBufferMap& buffers) override;
   void OnFrameAvailable() override;
   bool ArePicturesOverlayable() override;
   void UpdatePictureBufferSize(media::PictureBuffer* picture_buffer,
                                const gfx::Size& new_size) override;
 
  private:
   // Release any codec buffer that is associated with the given picture buffer
   // back to the codec.  It is okay if there is no such buffer.
@@ skipping 24 matching lines @@
   scoped_refptr<AVDASharedState> shared_state_;
 
   AVDAStateProvider* state_provider_;
 
   // The SurfaceTexture to render to. Non-null after Initialize() if
   // we're not rendering to a SurfaceView.
   scoped_refptr<gfx::SurfaceTexture> surface_texture_;
 
   media::VideoCodecBridge* media_codec_;
 
+  // Picture buffer IDs that are out for display. Stored in order of frames as
+  // they are returned from the decoder.
+  std::vector<int32_t> pictures_out_for_display_;
+
   DISALLOW_COPY_AND_ASSIGN(AndroidDeferredRenderingBackingStrategy);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_ANDROID_DEFERRED_RENDERING_BACKING_STRATEGY_H_