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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_TRANSPORT_TEXTURE_SERVICE_H_
#define CONTENT_RENDERER_TRANSPORT_TEXTURE_SERVICE_H_
#include <utility>
#include <vector>
#include "base/memory/ref_counted.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"
class RendererGLContext;
class TransportTextureHost;
// This class implements MessageFilter to dispatch IPC messages to
// TransportTextureHost.
class TransportTextureService : public IPC::ChannelProxy::MessageFilter,
public IPC::Message::Sender {
public:
TransportTextureService();
virtual ~TransportTextureService();
// 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 TransportTextureHost.
//
// A routing ID for the GLES2 context needs to be provided. This is
// important because the resources used needs to be shared with the GLES2
// context corresponding to the RenderView.
scoped_refptr<TransportTextureHost> CreateTransportTextureHost(
RendererGLContext* context, int context_route_id);
// Called by TransportTextureHost to remove a route.
void RemoveRoute(int32 host_id);
// IPC::Message::Sender Implementation.
virtual bool Send(IPC::Message* msg);
private:
typedef std::pair<int32, IPC::Channel::Listener*> PendingRoute;
// Add a route from |host_id| to |listener|. If channel is not connected yet
// then the information is saved.
void AddRouteInternal(int32 host_id, IPC::Channel::Listener* listener);
// Helper method to remove a route.
void RemoveRouteInternal(int32 host_id);
// Helper method to send an IPC message.
void SendInternal(IPC::Message* msg);
IPC::Channel* channel_;
// Router to send messages to a TransportTextureHost. This is created when
// the filter is added on the IO thread.
scoped_ptr<MessageRouter> router_;
// ID for the next TransportTextureHost.
int32 next_host_id_;
std::vector<PendingRoute> pending_routes_;
std::vector<IPC::Message*> pending_messages_;
DISALLOW_COPY_AND_ASSIGN(TransportTextureService);
};
#endif // CONTENT_RENDERER_TRANSPORT_TEXTURE_SERVICE_H_
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