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// 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_H_
#define REMOTING_HOST_IPC_DESKTOP_ENVIRONMENT_H_
#include <map>
#include <string>
#include "base/basictypes.h"
#include "base/callback_forward.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "remoting/host/desktop_environment.h"
#include "remoting/host/desktop_session_connector.h"
namespace base {
class SingleThreadTaskRunner;
} // base
namespace IPC {
class ChannelProxy;
} // namespace IPC
namespace remoting {
class DesktopSessionProxy;
// A variant of desktop environment integrating with the desktop by means of
// a helper process and talking to that process via IPC.
class IpcDesktopEnvironment : public DesktopEnvironment {
public:
// |desktop_session_connector| is used to bind DesktopSessionProxy to
// a desktop session, to be notified every time the desktop process is
// restarted.
IpcDesktopEnvironment(
scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
const std::string& client_jid,
const base::Closure& disconnect_callback,
base::WeakPtr<DesktopSessionConnector> desktop_session_connector);
virtual ~IpcDesktopEnvironment();
// DesktopEnvironment implementation.
virtual scoped_ptr<AudioCapturer> CreateAudioCapturer(
scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner) OVERRIDE;
virtual scoped_ptr<EventExecutor> CreateEventExecutor(
scoped_refptr<base::SingleThreadTaskRunner> input_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner) OVERRIDE;
virtual scoped_ptr<VideoFrameCapturer> CreateVideoCapturer(
scoped_refptr<base::SingleThreadTaskRunner> capture_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> encode_task_runner) OVERRIDE;
private:
// Binds DesktopSessionProxy to a desktop session if it is not bound already.
void ConnectToDesktopSession();
// Task runner on which public methods of this class should be called.
scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner_;
// True if |desktop_session_proxy_| is connected to a desktop session.
bool connected_;
// Used to bind to a desktop session and receive notifications every time
// the desktop process is replaced.
base::WeakPtr<DesktopSessionConnector> desktop_session_connector_;
scoped_refptr<DesktopSessionProxy> desktop_session_proxy_;
DISALLOW_COPY_AND_ASSIGN(IpcDesktopEnvironment);
};
// Used to create IpcDesktopEnvironment objects integrating 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(
scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
IPC::ChannelProxy* daemon_channel);
virtual ~IpcDesktopEnvironmentFactory();
// DesktopEnvironmentFactory implementation.
virtual scoped_ptr<DesktopEnvironment> Create(
const std::string& client_jid,
const base::Closure& disconnect_callback) OVERRIDE;
virtual bool SupportsAudioCapture() const 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:
// Task runner on which public methods of this class should be called.
scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner_;
// IPC channel connected to the daemon process.
IPC::ChannelProxy* daemon_channel_;
// List of DesktopEnvironment instances we've told the daemon process about.
typedef std::map<int, scoped_refptr<DesktopSessionProxy> >
ActiveConnectionsList;
ActiveConnectionsList active_connections_;
// Factory for weak pointers to DesktopSessionConnector interface.
base::WeakPtrFactory<DesktopSessionConnector> connector_factory_;
// 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_H_
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