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// Copyright (c) 2012 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_GPU_VIDEO_DECODE_ACCELERATOR_H_
#define CONTENT_COMMON_GPU_MEDIA_GPU_VIDEO_DECODE_ACCELERATOR_H_
#include <vector>
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "base/shared_memory.h"
#include "content/common/gpu/gpu_command_buffer_stub.h"
#include "ipc/ipc_listener.h"
#include "ipc/ipc_sender.h"
#include "media/video/video_decode_accelerator.h"
namespace content {
class GpuVideoDecodeAccelerator
: public IPC::Listener,
public IPC::Sender,
public media::VideoDecodeAccelerator::Client,
public GpuCommandBufferStub::DestructionObserver {
public:
// Each of the arguments to the constructor must outlive this object.
// |stub->decoder()| will be made current around any operation that touches
// the underlying VDA so that it can make GL calls safely.
GpuVideoDecodeAccelerator(IPC::Sender* sender,
int32 host_route_id,
GpuCommandBufferStub* stub);
virtual ~GpuVideoDecodeAccelerator();
// IPC::Listener implementation.
virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
// media::VideoDecodeAccelerator::Client implementation.
virtual void ProvidePictureBuffers(uint32 requested_num_of_buffers,
const gfx::Size& dimensions,
uint32 texture_target) OVERRIDE;
virtual void DismissPictureBuffer(int32 picture_buffer_id) OVERRIDE;
virtual void PictureReady(const media::Picture& picture) OVERRIDE;
virtual void NotifyInitializeDone() OVERRIDE;
virtual void NotifyError(media::VideoDecodeAccelerator::Error error) OVERRIDE;
virtual void NotifyEndOfBitstreamBuffer(int32 bitstream_buffer_id) OVERRIDE;
virtual void NotifyFlushDone() OVERRIDE;
virtual void NotifyResetDone() OVERRIDE;
// GpuCommandBufferStub::DestructionObserver implementation.
virtual void OnWillDestroyStub(GpuCommandBufferStub* stub) OVERRIDE;
// Function to delegate sending to actual sender.
virtual bool Send(IPC::Message* message) OVERRIDE;
// Initialize the accelerator with the given profile and send the
// |init_done_msg| when done.
// The renderer process handle is valid as long as we have a channel between
// GPU process and the renderer.
void Initialize(const media::VideoCodecProfile profile,
IPC::Message* init_done_msg);
private:
// Handlers for IPC messages.
void OnDecode(base::SharedMemoryHandle handle, int32 id, uint32 size);
void OnAssignPictureBuffers(
const std::vector<int32>& buffer_ids,
const std::vector<uint32>& texture_ids,
const std::vector<gfx::Size>& sizes);
void OnReusePictureBuffer(
int32 picture_buffer_id);
void OnFlush();
void OnReset();
void OnDestroy();
// Pointer to the IPC message sender.
IPC::Sender* sender_;
// Message to Send() when initialization is done. Is only non-NULL during
// initialization and is owned by the IPC channel underlying the
// GpuCommandBufferStub.
IPC::Message* init_done_msg_;
// Route ID to communicate with the host.
int32 host_route_id_;
// Unowned pointer to the underlying GpuCommandBufferStub.
base::WeakPtr<GpuCommandBufferStub> stub_;
// The underlying VideoDecodeAccelerator.
scoped_ptr<media::VideoDecodeAccelerator> video_decode_accelerator_;
// Callback for making the relevant context current for GL calls.
// Returns false if failed.
base::Callback<bool(void)> make_context_current_;
DISALLOW_IMPLICIT_CONSTRUCTORS(GpuVideoDecodeAccelerator);
};
} // namespace content
#endif // CONTENT_COMMON_GPU_MEDIA_GPU_VIDEO_DECODE_ACCELERATOR_H_
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