content/common/gpu/media/android_copying_backing_strategy.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_COMMON_GPU_MEDIA_ANDROID_COPYING_BACKING_STRATEGY_H_
   6 #define CONTENT_COMMON_GPU_MEDIA_ANDROID_COPYING_BACKING_STRATEGY_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/threading/thread_checker.h"
  10 #include "content/common/content_export.h"
  11 #include "content/common/gpu/media/android_video_decode_accelerator.h"
  12
  13 namespace gpu {
  14 class CopyTextureCHROMIUMResourceManager;
  15 }
  16
  17 namespace media {
  18 class PictureBuffer;
  19 }
  20
  21 namespace content {
  22
  23 class AndroidVideoDecodeAcceleratorStateProvider;
  24
  25 // A BackingStrategy implementation that copies images to PictureBuffer
  26 // textures via gpu texture copy.
  27 class CONTENT_EXPORT AndroidCopyingBackingStrategy
  28     : public AndroidVideoDecodeAccelerator::BackingStrategy {
  29  public:
  30   AndroidCopyingBackingStrategy();
  31   ~AndroidCopyingBackingStrategy() override;
  32
  33   // AndroidVideoDecodeAccelerator::BackingStrategy
  34   void SetStateProvider(AndroidVideoDecodeAcceleratorStateProvider*) override;
  35   void Cleanup() override;
  36   uint32 GetNumPictureBuffers() const override;
  37   uint32 GetTextureTarget() const override;
  38   void AssignCurrentSurfaceToPictureBuffer(
  39       int32 codec_buffer_index,
  40       const media::PictureBuffer&) override;
  41
  42  private:
  43   // Used for copy the texture from surface texture to picture buffers.
  44   scoped_ptr<gpu::CopyTextureCHROMIUMResourceManager> copier_;
  45
  46   AndroidVideoDecodeAcceleratorStateProvider* state_provider_;
  47 };
  48
  49 }  // namespace content
  50
  51 #endif  // CONTENT_COMMON_GPU_MEDIA_ANDROID_COPYING_BACKING_STRATEGY_H_