Add prototype D3D11VideoDecodeAccelerator.

media/gpu/d3d11_video_decode_accelerator_win.h

+// Copyright 2016 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_GPU_D3D11_VIDEO_DECODE_ACCELERATOR_WIN_H_
+#define MEDIA_GPU_D3D11_VIDEO_DECODE_ACCELERATOR_WIN_H_
+
+#include <d3d11.h>
+
+#include <list>
+#include <memory>
+
+#include "base/win/scoped_comptr.h"
+#include "media/gpu/accelerated_video_decoder.h"
+#include "media/gpu/d3d11_h264_accelerator.h"
+#include "media/gpu/gpu_video_decode_accelerator_helpers.h"
+#include "media/gpu/media_gpu_export.h"
+#include "media/video/video_decode_accelerator.h"
+
+namespace media {
+
+class MEDIA_GPU_EXPORT D3D11VideoDecodeAccelerator
+    : public VideoDecodeAccelerator,
+      public D3D11VideoDecoderClient {
+ public:
+  D3D11VideoDecodeAccelerator(
+      const GetGLContextCallback& get_gl_context_cb,
+      const MakeGLContextCurrentCallback& make_context_current_cb);
+
+  ~D3D11VideoDecodeAccelerator() override;
+
+  // VideoDecodeAccelerator implementation.
+  bool Initialize(const Config& config, Client* client) override;
+  void Decode(const BitstreamBuffer& bitstream_buffer) override;
+  void DoDecode();
+  void AssignPictureBuffers(const std::vector<PictureBuffer>& buffers) override;
+  void ReusePictureBuffer(int32_t picture_buffer_id) override;
+  void Flush() override;
+  void Reset() override;
+  void Destroy() override;
+  bool TryToSetupDecodeOnSeparateThread(
+      const base::WeakPtr<Client>& decode_client,
+      const scoped_refptr<base::SingleThreadTaskRunner>& decode_task_runner)
+      override;
+  GLenum GetSurfaceInternalFormat() const override;
+
+  // D3D11VideoDecoderClient implementation.
+  D3D11PictureBuffer* GetPicture() override;
+  void OutputResult(D3D11PictureBuffer* buffer,
+                    size_t input_buffer_id) override;
+  size_t input_buffer_id() const override;
+
+ private:
+  Client* client_;
+  GetGLContextCallback get_gl_context_cb_;
+  MakeGLContextCurrentCallback make_context_current_cb_;
+  base::win::ScopedComPtr<ID3D11Device> device_;
+  base::win::ScopedComPtr<ID3D11DeviceContext> device_context_;
+  base::win::ScopedComPtr<ID3D11VideoDevice> video_device_;
+  base::win::ScopedComPtr<ID3D11VideoContext> video_context_;
+  std::unique_ptr<AcceleratedVideoDecoder> decoder_;
+  std::unique_ptr<D3D11H264Accelerator> h264_accelerator_;
+
+  GUID decoder_guid_;
+
+  std::list<BitstreamBuffer> input_buffer_queue_;
+  uint32_t input_buffer_id_;
+  std::unique_ptr<base::SharedMemory> bitstream_buffer_;
+  size_t bitstream_buffer_size_;
+
+  std::vector<std::unique_ptr<D3D11PictureBuffer>> picture_buffers_;
+
+  DISALLOW_COPY_AND_ASSIGN(D3D11VideoDecodeAccelerator);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_GPU_D3D11_VIDEO_DECODE_ACCELERATOR_WIN_H_