Don't require VDAs to return all PictureBuffers at once.

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 "content/common/content_export.h"
 #include "content/common/gpu/media/android_video_decode_accelerator.h"
 
@@ skipping 18 matching lines @@
 // implementation to talk to MediaCodec.
 class CONTENT_EXPORT AndroidDeferredRenderingBackingStrategy
     : public AndroidVideoDecodeAccelerator::BackingStrategy {
  public:
   AndroidDeferredRenderingBackingStrategy();
   ~AndroidDeferredRenderingBackingStrategy() override;
 
   // AndroidVideoDecodeAccelerator::BackingStrategy
   void Initialize(AVDAStateProvider*) override;
   void Cleanup(const AndroidVideoDecodeAccelerator::OutputBufferMap&) override;
-  uint32 GetNumPictureBuffers() const override;
   uint32 GetTextureTarget() const override;
   scoped_refptr<gfx::SurfaceTexture> CreateSurfaceTexture() override;
   void UseCodecBufferForPictureBuffer(int32 codec_buffer_index,
                                       const media::PictureBuffer&) override;
   void AssignOnePictureBuffer(const media::PictureBuffer&) override;
   void ReuseOnePictureBuffer(const media::PictureBuffer&) override;
   void DismissOnePictureBuffer(const media::PictureBuffer&) override;
   void CodecChanged(
       media::VideoCodecBridge*,
       const AndroidVideoDecodeAccelerator::OutputBufferMap&) override;
 
+  static media::VideoDecodeAccelerator::Capabilities::Flags
+  GetCapabilitiesFlags() {
+    return media::VideoDecodeAccelerator::Capabilities::
+        NEEDS_ALL_PICTURE_BUFFERS_TO_DECODE;
+  }
+
  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.
   void ReleaseCodecBufferForPicture(const media::PictureBuffer& picture_buffer);
 
   // Return the TextureRef for a given PictureBuffer's texture.
   gpu::gles2::TextureRef* GetTextureForPicture(const media::PictureBuffer&);
 
   // Return the AVDACodecImage for a given PictureBuffer's texture.
   AVDACodecImage* GetImageForPicture(const media::PictureBuffer&);
   void SetImageForPicture(const media::PictureBuffer& picture_buffer,
                           const scoped_refptr<gl::GLImage>& image);
 
   scoped_refptr<AVDASharedState> shared_state_;
 
   AVDAStateProvider* state_provider_;
 
   scoped_refptr<gfx::SurfaceTexture> surface_texture_;
 
   media::VideoCodecBridge* media_codec_;
 
   DISALLOW_COPY_AND_ASSIGN(AndroidDeferredRenderingBackingStrategy);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_ANDROID_DEFERRED_RENDERING_BACKING_STRATEGY_H_