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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_GPU_VIDEO_SERVICE_HOST_H_
#define CONTENT_RENDERER_GPU_VIDEO_SERVICE_HOST_H_
#include "base/memory/singleton.h"
#include "content/renderer/gpu_channel_host.h"
#include "content/renderer/gpu_video_decoder_host.h"
#include "ipc/ipc_channel.h"
#include "media/base/buffers.h"
#include "media/base/video_frame.h"
namespace media {
class VideoDecodeAccelerator;
} // namespace media
// GpuVideoServiceHost lives on IO thread and is used to dispatch IPC messages
// to GpuVideoDecoderHost objects.
class GpuVideoServiceHost : public IPC::ChannelProxy::MessageFilter {
public:
GpuVideoServiceHost();
// IPC::ChannelProxy::MessageFilter implementations.
virtual bool OnMessageReceived(const IPC::Message& message);
virtual void OnFilterAdded(IPC::Channel* channel);
virtual void OnFilterRemoved();
virtual void OnChannelClosing();
// Called on RenderThread to create a hardware accelerated video decoder
// in the GPU process.
//
// A routing ID for the GLES2 context needs to be provided when creating a
// hardware video decoder. This is important because the resources used by
// the video decoder needs to be shared with the GLES2 context corresponding
// to the RenderView.
//
// This means that a GPU video decoder is tied to a specific RenderView and
// its GLES2 context in the GPU process.
//
// Returns a GpuVideoDecoderHost as a handle to control the video decoder.
GpuVideoDecoderHost* CreateVideoDecoder(int context_route_id);
media::VideoDecodeAccelerator* CreateVideoAccelerator();
private:
IPC::Channel* channel_;
// Router to send messages to a GpuVideoDecoderHost.
MessageRouter router_;
// ID for the next GpuVideoDecoderHost.
int32 next_decoder_host_id_;
DISALLOW_COPY_AND_ASSIGN(GpuVideoServiceHost);
};
#endif // CONTENT_RENDERER_GPU_VIDEO_SERVICE_HOST_H_
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