content/browser/device_monitor_mac.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_DEVICE_MONITOR_MAC_H_
   6 #define CONTENT_BROWSER_DEVICE_MONITOR_MAC_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/system_monitor/system_monitor.h"
  10
  11 namespace {
  12 class DeviceMonitorMacImpl;
  13 }
  14
  15 namespace content {
  16
  17 // Class to track audio/video devices removal or addition via callback to
  18 // base::SystemMonitor ProcessDevicesChanged(). A single object of this class
  19 // is created from the browser main process and lives as long as this one.
  20 class DeviceMonitorMac {
  21  public:
  22   DeviceMonitorMac();
  23   ~DeviceMonitorMac();
  24
  25   // Method called by the internal DeviceMonitorMacImpl object
  26   // |device_monitor_impl_| when a device of type |type| has been added to or
  27   // removed from the system. This code executes in the notification thread
  28   // (QTKit or AVFoundation).
  29   void NotifyDeviceChanged(base::SystemMonitor::DeviceType type);
  30
  31  private:
  32   scoped_ptr<DeviceMonitorMacImpl> device_monitor_impl_;
  33
  34   DISALLOW_COPY_AND_ASSIGN(DeviceMonitorMac);
  35 };
  36
  37 }  // namespace content
  38
  39 #endif  // CONTENT_BROWSER_DEVICE_MONITOR_MAC_H_