Moved GPU related files in content/renderer into gpu subdirectory.

content/renderer/gpu_video_decoder_host.h

-// Copyright (c) 2011 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_RENDERER_GPU_VIDEO_DECODER_HOST_H_
-#define CONTENT_RENDERER_GPU_VIDEO_DECODER_HOST_H_
-
-#include <deque>
-#include <map>
-
-#include "base/memory/singleton.h"
-#include "base/shared_memory.h"
-#include "content/renderer/gpu_channel_host.h"
-#include "media/base/buffers.h"
-#include "media/base/video_frame.h"
-#include "media/video/video_decode_engine.h"
-
-using media::VideoFrame;
-using media::Buffer;
-
-class MessageRouter;
-struct GpuVideoDecoderInitDoneParam;
-
-// This class is used to talk to GpuVideoDecoder in the GPU process through
-// IPC messages. It implements the interface of VideoDecodeEngine so users
-// view it as a regular video decode engine, the implementation is a portal
-// to the GPU process.
-//
-// THREAD SEMANTICS
-//
-// All methods of this class can be accessed on any thread. A message loop
-// needs to be provided to class through Initialize() for accessing the
-// IPC channel. Event handlers are called on that message loop.
-//
-// Since this class is not refcounted, it is important to delete this
-// object only after OnUninitializeCompelte() is called.
-class GpuVideoDecoderHost : public media::VideoDecodeEngine,
-                            public IPC::Channel::Listener {
- public:
-  // |router| is used to dispatch IPC messages to this object.
-  // |ipc_sender| is used to send IPC messages to GPU process.
-  // It is important that the above two objects are accessed on the
-  // |message_loop_|.
-  GpuVideoDecoderHost(MessageRouter* router,
-                      IPC::Message::Sender* ipc_sender,
-                      int context_route_id,
-                      int32 decoder_host_id);
-  virtual ~GpuVideoDecoderHost();
-
-  // IPC::Channel::Listener.
-  virtual void OnChannelConnected(int32 peer_pid) {}
-  virtual void OnChannelError();
-  virtual bool OnMessageReceived(const IPC::Message& message);
-
-  // media::VideoDecodeEngine implementation.
-  virtual void Initialize(MessageLoop* message_loop,
-                          VideoDecodeEngine::EventHandler* event_handler,
-                          media::VideoDecodeContext* context,
-                          const media::VideoDecoderConfig& config);
-  virtual void ConsumeVideoSample(scoped_refptr<Buffer> buffer);
-  virtual void ProduceVideoFrame(scoped_refptr<VideoFrame> frame);
-  virtual void Uninitialize();
-  virtual void Flush();
-  virtual void Seek();
-
- private:
-  typedef std::map<int32, scoped_refptr<media::VideoFrame> > VideoFrameMap;
-
-  // Internal states.
-  enum GpuVideoDecoderHostState {
-    kStateUninitialized,
-    kStateNormal,
-    kStateError,
-    kStateFlushing,
-  };
-
-  // Takes care of sending IPC message to create a video decoder.
-  void CreateVideoDecoder();
-
-  // Handlers for messages received from the GPU process.
-  void OnCreateVideoDecoderDone(int32 decoder_id);
-  void OnInitializeDone(const GpuVideoDecoderInitDoneParam& param);
-  void OnUninitializeDone();
-  void OnFlushDone();
-  void OnPrerollDone();
-  void OnEmptyThisBufferACK();
-  void OnProduceVideoSample();
-  void OnConsumeVideoFrame(int32 frame_id, int64 timestamp,
-                           int64 duration, int32 flags);
-  void OnAllocateVideoFrames(int32 n, uint32 width,
-                             uint32 height, int32 format);
-  void OnReleaseAllVideoFrames();
-
-  // Handler for VideoDecodeContext. This method is called when video frames
-  // allocation is done.
-  void OnAllocateVideoFramesDone();
-
-  // Send a message to the GPU process to inform that a video frame is
-  // allocated.
-  void SendVideoFrameAllocated(int32 frame_id,
-                               scoped_refptr<media::VideoFrame> frame);
-
-  // Send a video sample to the GPU process and tell it to use the buffer for
-  // video decoding.
-  void SendConsumeVideoSample();
-
-  // Look up the frame_id for |frame| and send a message to the GPU process
-  // to use that video frame to produce an output.
-  void SendProduceVideoFrame(scoped_refptr<media::VideoFrame> frame);
-
-  // A router used to send us IPC messages.
-  MessageRouter* router_;
-
-  // Sends IPC messages to the GPU process.
-  IPC::Message::Sender* ipc_sender_;
-
-  // Route ID of the GLES2 context in the GPU process.
-  int context_route_id_;
-
-  // Message loop that this object runs on.
-  MessageLoop* message_loop_;
-
-  // We expect that the client of us will always available during our life span.
-  EventHandler* event_handler_;
-
-  // A Context for allocating video frame textures.
-  media::VideoDecodeContext* context_;
-
-  // Dimensions of the video.
-  int width_;
-  int height_;
-
-  // Current state of video decoder.
-  GpuVideoDecoderHostState state_;
-
-  // ID of this GpuVideoDecoderHost.
-  int32 decoder_host_id_;
-
-  // ID of GpuVideoDecoder in the GPU process.
-  int32 decoder_id_;
-
-  // We are not able to push all received buffer to gpu process at once.
-  std::deque<scoped_refptr<Buffer> > input_buffer_queue_;
-
-  // Currently we do not use ring buffer in input buffer, therefore before
-  // GPU process had finished access it, we should not touch it.
-  bool input_buffer_busy_;
-
-  // Transfer buffers for both input and output.
-  // TODO(jiesun): remove output buffer when hardware composition is ready.
-  scoped_ptr<base::SharedMemory> input_transfer_buffer_;
-
-  // Frame ID for the newly generated video frame.
-  int32 current_frame_id_;
-
-  // The list of video frames allocated by VideoDecodeContext.
-  std::vector<scoped_refptr<media::VideoFrame> > video_frames_;
-
-  // The mapping between video frame ID and a video frame.
-  VideoFrameMap video_frame_map_;
-
-  DISALLOW_COPY_AND_ASSIGN(GpuVideoDecoderHost);
-};
-
-#endif  // CONTENT_RENDERER_GPU_VIDEO_DECODER_HOST_H_