Making DesktopEnvironment a factory class used by ClientSession to create audio/video capturers and…

remoting/host/ipc_desktop_environment_factory.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 REMOTING_HOST_IPC_DESKTOP_ENVIRONMENT_FACTORY_H_
-#define REMOTING_HOST_IPC_DESKTOP_ENVIRONMENT_FACTORY_H_
-
-#include <map>
-
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "remoting/host/desktop_environment_factory.h"
-#include "remoting/host/desktop_session_connector.h"
-
-namespace IPC {
-class ChannelProxy;
-}  // namespace IPC
-
-namespace remoting {
-
-class DesktopSessionConnector;
-class DesktopSessionProxy;
-
-// Used to create IpcDesktopEnvironment objects intergating with the desktop via
-// a helper process and talking to that process via IPC.
-class IpcDesktopEnvironmentFactory
-    : public DesktopEnvironmentFactory,
-      public DesktopSessionConnector {
- public:
-  // Passes a reference to the IPC channel connected to the daemon process and
-  // relevant task runners. |daemon_channel| must outlive this object.
-  IpcDesktopEnvironmentFactory(
-      IPC::ChannelProxy* daemon_channel,
-      scoped_refptr<base::SingleThreadTaskRunner> audio_capture_task_runner,
-      scoped_refptr<base::SingleThreadTaskRunner> input_task_runner,
-      scoped_refptr<base::SingleThreadTaskRunner> network_task_runner,
-      scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner,
-      scoped_refptr<base::SingleThreadTaskRunner> video_capture_task_runner);
-  virtual ~IpcDesktopEnvironmentFactory();
-
-  virtual scoped_ptr<DesktopEnvironment> Create() OVERRIDE;
-
-  // DesktopSessionConnector implementation.
-  virtual void ConnectTerminal(
-      scoped_refptr<DesktopSessionProxy> desktop_session_proxy) OVERRIDE;
-  virtual void DisconnectTerminal(
-      scoped_refptr<DesktopSessionProxy> desktop_session_proxy) OVERRIDE;
-  virtual void OnDesktopSessionAgentAttached(
-      int terminal_id,
-      IPC::PlatformFileForTransit desktop_process,
-      IPC::PlatformFileForTransit desktop_pipe) OVERRIDE;
-  virtual void OnTerminalDisconnected(int terminal_id) OVERRIDE;
-
- private:
-  // IPC channel connected to the daemon process.
-  IPC::ChannelProxy* daemon_channel_;
-
-  // Task runner used to run the audio capturer.
-  scoped_refptr<base::SingleThreadTaskRunner> audio_capture_task_runner_;
-
-  // Task runner used to service calls to the DesktopSessionConnector APIs.
-  scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_;
-
-  // Task runner used to run the video capturer.
-  scoped_refptr<base::SingleThreadTaskRunner> video_capture_task_runner_;
-
-  // List of DesktopEnvironment instances we've told the daemon process about.
-  typedef std::map<int, scoped_refptr<DesktopSessionProxy> >
-      ActiveConnectionsList;
-  ActiveConnectionsList active_connections_;
-
-  // Next desktop session ID. IDs are allocated sequentially starting from 0.
-  // This gives us more than 67 years of unique IDs assuming a new ID is
-  // allocated every second.
-  int next_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(IpcDesktopEnvironmentFactory);
-};
-
-}  // namespace remoting
-
-#endif  // REMOTING_HOST_IPC_DESKTOP_ENVIRONMENT_FACTORY_H_