Remove PlatformFile from profile_browsertest
[chromium-blink-merge.git] / content / browser / device_monitor_mac.h
blob696b96127b3860f885b3a497a3aef87a815ad046
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.
5 #ifndef CONTENT_BROWSER_DEVICE_MONITOR_MAC_H_
6 #define CONTENT_BROWSER_DEVICE_MONITOR_MAC_H_
8 #include "base/basictypes.h"
9 #include "base/system_monitor/system_monitor.h"
10 #include "base/threading/thread_checker.h"
12 namespace {
13 class DeviceMonitorMacImpl;
16 namespace content {
18 // Class to track audio/video devices removal or addition via callback to
19 // base::SystemMonitor ProcessDevicesChanged(). A single object of this class
20 // is created from the browser main process and lives as long as this one.
21 class DeviceMonitorMac {
22 public:
23 DeviceMonitorMac();
24 ~DeviceMonitorMac();
26 // Registers the observers for the audio/video device removal, connection and
27 // suspension. The AVFoundation library is also loaded and initialised if the
28 // OS supports it.
29 void StartMonitoring();
31 // Method called by the internal DeviceMonitorMacImpl object
32 // |device_monitor_impl_| when a device of type |type| has been added to or
33 // removed from the system. This code executes in the notification thread
34 // (QTKit or AVFoundation).
35 void NotifyDeviceChanged(base::SystemMonitor::DeviceType type);
37 private:
38 scoped_ptr<DeviceMonitorMacImpl> device_monitor_impl_;
40 // |thread_checker_| is used to check that constructor and StartMonitoring()
41 // are called in the correct thread, that also owns the object.
42 base::ThreadChecker thread_checker_;
44 DISALLOW_COPY_AND_ASSIGN(DeviceMonitorMac);
47 } // namespace content
49 #endif // CONTENT_BROWSER_DEVICE_MONITOR_MAC_H_