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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_GPU_GPU_CHANNEL_H_
#define CHROME_GPU_GPU_CHANNEL_H_
#pragma once
#include <set>
#include <string>
#include <vector>
#include "base/id_map.h"
#include "base/process.h"
#include "base/scoped_ptr.h"
#include "build/build_config.h"
#include "chrome/common/gpu_create_command_buffer_config.h"
#include "chrome/common/gpu_video_common.h"
#include "chrome/common/message_router.h"
#include "chrome/gpu/gpu_command_buffer_stub.h"
#include "ipc/ipc_channel.h"
#include "ipc/ipc_message.h"
#include "ipc/ipc_sync_channel.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gfx/size.h"
class GpuThread;
// Encapsulates an IPC channel between the GPU process and one renderer
// process. On the renderer side there's a corresponding GpuChannelHost.
class GpuChannel : public IPC::Channel::Listener,
public IPC::Message::Sender,
public base::RefCountedThreadSafe<GpuChannel> {
public:
// Takes ownership of the renderer process handle.
GpuChannel(GpuThread* gpu_thread,
int renderer_id);
virtual ~GpuChannel();
bool Init();
// Get the GpuThread that owns this channel.
GpuThread* gpu_thread() const { return gpu_thread_; }
// Returns the name of the associated IPC channel.
std::string GetChannelName();
#if defined(OS_POSIX)
int GetRendererFileDescriptor();
#endif // defined(OS_POSIX)
base::ProcessHandle renderer_process() const {
return renderer_process_;
}
// IPC::Channel::Listener implementation:
virtual bool OnMessageReceived(const IPC::Message& msg);
virtual void OnChannelError();
virtual void OnChannelConnected(int32 peer_pid);
// IPC::Message::Sender implementation:
virtual bool Send(IPC::Message* msg);
void CreateViewCommandBuffer(
gfx::PluginWindowHandle window,
int32 render_view_id,
const GPUCreateCommandBufferConfig& init_params,
int32* route_id);
#if defined(OS_MACOSX)
virtual void AcceleratedSurfaceBuffersSwapped(
int32 route_id, uint64 swap_buffers_count);
void DidDestroySurface(int32 renderer_route_id);
bool IsRenderViewGone(int32 renderer_route_id);
#endif
private:
bool OnControlMessageReceived(const IPC::Message& msg);
int GenerateRouteID();
// Message handlers.
void OnInitialize(base::ProcessHandle renderer_process);
void OnCreateOffscreenCommandBuffer(
int32 parent_route_id,
const gfx::Size& size,
const GPUCreateCommandBufferConfig& init_params,
uint32 parent_texture_id,
int32* route_id);
void OnDestroyCommandBuffer(int32 route_id);
void OnCreateVideoDecoder(int32 context_route_id,
int32 decoder_host_id);
void OnDestroyVideoDecoder(int32 decoder_id);
// The lifetime of objects of this class is managed by a GpuThread. The
// GpuThreadss destroy all the GpuChannels that they own when they
// are destroyed. So a raw pointer is safe.
GpuThread* gpu_thread_;
scoped_ptr<IPC::SyncChannel> channel_;
// The id of the renderer who is on the other side of the channel.
int renderer_id_;
// Handle to the renderer process that is on the other side of the channel.
base::ProcessHandle renderer_process_;
// The process id of the renderer process.
base::ProcessId renderer_pid_;
// Used to implement message routing functionality to CommandBuffer objects
MessageRouter router_;
#if defined(ENABLE_GPU)
typedef IDMap<GpuCommandBufferStub, IDMapOwnPointer> StubMap;
StubMap stubs_;
#if defined(OS_MACOSX)
std::set<int32> destroyed_renderer_routes_;
#endif // defined (OS_MACOSX)
#endif // defined (ENABLE_GPU)
bool log_messages_; // True if we should log sent and received messages.
DISALLOW_COPY_AND_ASSIGN(GpuChannel);
};
#endif // CHROME_GPU_GPU_CHANNEL_H_
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