Move gpu client files to content_common, in content/common/gpu/client

content/renderer/gpu/gpu_channel_host.h

-// 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_RENDERER_GPU_GPU_CHANNEL_HOST_H_
-#define CONTENT_RENDERER_GPU_GPU_CHANNEL_HOST_H_
-#pragma once
-
-#include <string>
-#include <vector>
-
-#include "base/hash_tables.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/process_util.h"
-#include "base/synchronization/lock.h"
-#include "content/common/gpu/gpu_process_launch_causes.h"
-#include "content/common/message_router.h"
-#include "content/public/common/gpu_info.h"
-#include "content/renderer/gpu/gpu_video_decode_accelerator_host.h"
-#include "ipc/ipc_channel_handle.h"
-#include "ipc/ipc_channel_proxy.h"
-#include "ipc/ipc_sync_channel.h"
-#include "ui/gfx/gl/gpu_preference.h"
-#include "ui/gfx/native_widget_types.h"
-#include "ui/gfx/size.h"
-
-class CommandBufferProxy;
-struct GPUCreateCommandBufferConfig;
-class GURL;
-class TransportTextureService;
-class MessageLoop;
-
-namespace base {
-class MessageLoopProxy;
-}
-
-namespace IPC {
-class SyncMessageFilter;
-}
-
-struct GpuListenerInfo {
-  GpuListenerInfo();
-  ~GpuListenerInfo();
-
-  base::WeakPtr<IPC::Channel::Listener> listener;
-  scoped_refptr<base::MessageLoopProxy> loop;
-};
-
-class GpuChannelHostFactory {
- public:
-  virtual ~GpuChannelHostFactory();
-  static GpuChannelHostFactory* instance() { return instance_; }
-
-  virtual bool IsMainThread() = 0;
-  virtual bool IsIOThread() = 0;
-  virtual MessageLoop* GetMainLoop() = 0;
-  virtual base::MessageLoopProxy* GetIOLoopProxy() = 0;
-  virtual base::WaitableEvent* GetShutDownEvent() = 0;
-  virtual scoped_ptr<base::SharedMemory> AllocateSharedMemory(uint32 size) = 0;
-  virtual int32 CreateViewCommandBuffer(
-      int32 surface_id, const GPUCreateCommandBufferConfig& init_params) = 0;
-  virtual GpuChannelHost* EstablishGpuChannelSync(
-      content::CauseForGpuLaunch) = 0;
-
- protected:
-  static void set_instance(GpuChannelHostFactory* instance) {
-    instance_ = instance;
-  }
-
- private:
-  static GpuChannelHostFactory* instance_;
-};
-
-// Encapsulates an IPC channel between the renderer and one plugin process.
-// On the plugin side there's a corresponding GpuChannel.
-class GpuChannelHost : public IPC::Message::Sender,
-                       public base::RefCountedThreadSafe<GpuChannelHost> {
- public:
-  enum State {
-    // Not yet connected.
-    kUnconnected,
-    // Ready to use.
-    kConnected,
-    // An error caused the host to become disconnected. Recreate channel to
-    // reestablish connection.
-    kLost
-  };
-
-  // Called on the render thread
-  explicit GpuChannelHost(GpuChannelHostFactory* factory);
-  virtual ~GpuChannelHost();
-
-  // Connect to GPU process channel.
-  void Connect(const IPC::ChannelHandle& channel_handle,
-               base::ProcessHandle renderer_process_for_gpu);
-
-  State state() const { return state_; }
-
-  // Change state to kLost.
-  void SetStateLost();
-
-  // The GPU stats reported by the GPU process.
-  void set_gpu_info(const content::GPUInfo& gpu_info);
-  const content::GPUInfo& gpu_info() const;
-
-  void OnChannelError();
-
-  // IPC::Message::Sender implementation:
-  virtual bool Send(IPC::Message* msg) OVERRIDE;
-
-  // Create and connect to a command buffer in the GPU process.
-  CommandBufferProxy* CreateViewCommandBuffer(
-      int32 surface_id,
-      CommandBufferProxy* share_group,
-      const std::string& allowed_extensions,
-      const std::vector<int32>& attribs,
-      const GURL& active_url,
-      gfx::GpuPreference gpu_preference);
-
-  // Create and connect to a command buffer in the GPU process.
-  CommandBufferProxy* CreateOffscreenCommandBuffer(
-      const gfx::Size& size,
-      CommandBufferProxy* share_group,
-      const std::string& allowed_extensions,
-      const std::vector<int32>& attribs,
-      const GURL& active_url,
-      gfx::GpuPreference gpu_preference);
-
-  // Creates a video decoder in the GPU process.
-  // Returned pointer is owned by the CommandBufferProxy for |route_id|.
-  GpuVideoDecodeAcceleratorHost* CreateVideoDecoder(
-      int command_buffer_route_id,
-      media::VideoDecodeAccelerator::Profile profile,
-      media::VideoDecodeAccelerator::Client* client);
-
-  // Destroy a command buffer created by this channel.
-  void DestroyCommandBuffer(CommandBufferProxy* command_buffer);
-
-  // Add a route for the current message loop.
-  void AddRoute(int route_id, base::WeakPtr<IPC::Channel::Listener> listener);
-  void RemoveRoute(int route_id);
-
-  // Asks the GPU process whether the creation or destruction of the
-  // given command buffer on the given GPU will provoke a switch of
-  // the GPU from integrated to discrete or vice versa. This requires
-  // all of the GL contexts in the same share group in the GPU process
-  // to be dropped.
-  bool WillGpuSwitchOccur(bool is_creating_context,
-                          gfx::GpuPreference gpu_preference);
-
-  // Forcibly close the channel on the GPU process side. This will
-  // cause all command buffers on this side to soon afterward start
-  // registering lost contexts. It also has the side effect of setting
-  // the state on this side to lost.
-  void ForciblyCloseChannel();
-
-  GpuChannelHostFactory* factory() const { return factory_; }
-
- private:
-  // A filter used internally to route incoming messages from the IO thread
-  // to the correct message loop.
-  class MessageFilter : public IPC::ChannelProxy::MessageFilter {
-   public:
-    explicit MessageFilter(GpuChannelHost* parent);
-    virtual ~MessageFilter();
-
-    void AddRoute(int route_id,
-                  base::WeakPtr<IPC::Channel::Listener> listener,
-                  scoped_refptr<base::MessageLoopProxy> loop);
-    void RemoveRoute(int route_id);
-
-    // IPC::ChannelProxy::MessageFilter implementation:
-    virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
-    virtual void OnChannelError() OVERRIDE;
-
-   private:
-    GpuChannelHost* parent_;
-
-    typedef base::hash_map<int, GpuListenerInfo> ListenerMap;
-    ListenerMap listeners_;
-  };
-
-  GpuChannelHostFactory* factory_;
-
-  State state_;
-
-  content::GPUInfo gpu_info_;
-
-  scoped_ptr<IPC::SyncChannel> channel_;
-  scoped_refptr<MessageFilter> channel_filter_;
-
-  // Used to look up a proxy from its routing id.
-  typedef base::hash_map<int, CommandBufferProxy*> ProxyMap;
-  ProxyMap proxies_;
-
-  // A lock to guard against concurrent access to members like the proxies map
-  // for calls from contexts that may live on the compositor or main thread.
-  mutable base::Lock context_lock_;
-
-  // A filter for sending messages from thread other than the main thread.
-  scoped_refptr<IPC::SyncMessageFilter> sync_filter_;
-
-  DISALLOW_COPY_AND_ASSIGN(GpuChannelHost);
-};
-
-#endif  // CONTENT_RENDERER_GPU_GPU_CHANNEL_HOST_H_