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// 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_VIDEO_DECODE_ACCELERATOR_HOST_H_
#define CONTENT_RENDERER_VIDEO_DECODE_ACCELERATOR_HOST_H_
#include <vector>
#include "base/memory/scoped_ptr.h"
#include "base/shared_memory.h"
#include "ipc/ipc_channel.h"
#include "media/video/video_decode_accelerator.h"
class MessageLoop;
class MessageRouter;
// This class is used to talk to VideoDecodeAccelerator in the GPU process
// through IPC messages.
class VideoDecodeAcceleratorHost : public IPC::Channel::Listener,
public media::VideoDecodeAccelerator {
public:
// |router| is used to dispatch IPC messages to this object.
// |ipc_sender| is used to send IPC messages to GPU process.
VideoDecodeAcceleratorHost(MessageRouter* router,
IPC::Message::Sender* ipc_sender,
int32 decoder_host_id);
virtual ~VideoDecodeAcceleratorHost();
// IPC::Channel::Listener implementation.
virtual void OnChannelConnected(int32 peer_pid);
virtual void OnChannelError();
virtual bool OnMessageReceived(const IPC::Message& message);
// media::VideoDecodeAccelerator implementation.
virtual const std::vector<uint32>& GetConfig(
const std::vector<uint32>& prototype_config);
virtual bool Initialize(const std::vector<uint32>& config);
virtual bool Decode(media::BitstreamBuffer* bitstream_buffer,
media::VideoDecodeAcceleratorCallback* callback);
virtual void AssignPictureBuffer(
std::vector<PictureBuffer*> picture_buffers);
virtual void ReusePictureBuffer(PictureBuffer* picture_buffer);
virtual bool Flush(media::VideoDecodeAcceleratorCallback* callback);
virtual bool Abort(media::VideoDecodeAcceleratorCallback* callback);
private:
// Message loop that this object runs on.
MessageLoop* message_loop_;
// 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_;
// ID of this VideoDecodeAcceleratorHost.
int32 decoder_host_id_;
// ID of VideoDecodeAccelerator in the GPU process.
int32 decoder_id_;
// Transfer buffers for both input and output.
// TODO(vmr): move into plugin provided IPC buffers.
scoped_ptr<base::SharedMemory> input_transfer_buffer_;
std::vector<uint32> configs_;
DISALLOW_COPY_AND_ASSIGN(VideoDecodeAcceleratorHost);
};
#endif // CONTENT_RENDERER_VIDEO_DECODE_ACCELERATOR_HOST_H_
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