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// Copyright (c) 2010 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 CHROME_RENDERER_GPU_VIDEO_SERVICE_HOST_H_
#define CHROME_RENDERER_GPU_VIDEO_SERVICE_HOST_H_
#include "base/singleton.h"
#include "chrome/common/gpu_video_common.h"
#include "chrome/renderer/gpu_channel_host.h"
#include "chrome/renderer/gpu_video_decoder_host.h"
#include "ipc/ipc_channel.h"
#include "media/base/buffers.h"
#include "media/base/video_frame.h"
// A GpuVideoServiceHost is a singleton in the renderer process that provides
// access to hardware accelerated video decoding device in the GPU process
// though a GpuVideoDecoderHost.
class GpuVideoServiceHost : public IPC::Channel::Listener,
public Singleton<GpuVideoServiceHost> {
public:
// IPC::Channel::Listener.
virtual void OnChannelConnected(int32 peer_pid) {}
virtual void OnChannelError();
virtual void OnMessageReceived(const IPC::Message& message);
void OnRendererThreadInit(MessageLoop* message_loop);
// Called by GpuChannelHost when a GPU channel is established.
void OnGpuChannelConnected(GpuChannelHost* channel_host,
MessageRouter* router,
IPC::SyncChannel* channel);
// 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);
// TODO(hclam): Provide a method to destroy the decoder. We also need to
// listen to context lost event.
// Methods called by GpuVideoDecoderHost.
void AddRoute(int route_id, GpuVideoDecoderHost* decoder_host);
void RemoveRoute(int route_id);
private:
GpuVideoServiceHost();
GpuChannelHost* channel_host_;
MessageRouter* router_;
GpuVideoServiceInfoParam service_info_;
MessageLoop* message_loop_; // Message loop of render thread.
friend struct DefaultSingletonTraits<GpuVideoServiceHost>;
DISALLOW_COPY_AND_ASSIGN(GpuVideoServiceHost);
};
#endif // CHROME_RENDERER_GPU_VIDEO_SERVICE_HOST_H_
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