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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef MEDIA_CAPTURE_DEVICE_MONITOR_MAC_H_ | 5 #ifndef MEDIA_CAPTURE_DEVICE_MONITOR_MAC_H_ |
6 #define MEDIA_CAPTURE_DEVICE_MONITOR_MAC_H_ | 6 #define MEDIA_CAPTURE_DEVICE_MONITOR_MAC_H_ |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 | 9 |
10 #include "base/macros.h" | 10 #include "base/macros.h" |
11 #include "base/system_monitor/system_monitor.h" | 11 #include "base/system_monitor/system_monitor.h" |
12 #include "base/threading/thread_checker.h" | 12 #include "base/threading/thread_checker.h" |
13 #include "media/capture/capture_export.h" | 13 #include "media/base/media_export.h" |
14 | 14 |
15 namespace { | 15 namespace { |
16 class DeviceMonitorMacImpl; | 16 class DeviceMonitorMacImpl; |
17 } | 17 } |
18 | 18 |
19 namespace media { | 19 namespace media { |
20 | 20 |
21 // Class to track audio/video devices removal or addition via callback to | 21 // Class to track audio/video devices removal or addition via callback to |
22 // base::SystemMonitor ProcessDevicesChanged(). A single object of this class | 22 // base::SystemMonitor ProcessDevicesChanged(). A single object of this class |
23 // is created from the browser main process and lives as long as this one. | 23 // is created from the browser main process and lives as long as this one. |
24 class CAPTURE_EXPORT DeviceMonitorMac { | 24 class MEDIA_EXPORT DeviceMonitorMac { |
25 public: | 25 public: |
26 DeviceMonitorMac(); | 26 DeviceMonitorMac(); |
27 ~DeviceMonitorMac(); | 27 ~DeviceMonitorMac(); |
28 | 28 |
29 // Registers the observers for the audio/video device removal, connection and | 29 // Registers the observers for the audio/video device removal, connection and |
30 // suspension. The AVFoundation library is also loaded and initialised if the | 30 // suspension. The AVFoundation library is also loaded and initialised if the |
31 // OS supports it. The |device_task_runner| argument represents the thread on | 31 // OS supports it. The |device_task_runner| argument represents the thread on |
32 // which device enumeration will occur. | 32 // which device enumeration will occur. |
33 void StartMonitoring( | 33 void StartMonitoring( |
34 const scoped_refptr<base::SingleThreadTaskRunner>& device_task_runner); | 34 const scoped_refptr<base::SingleThreadTaskRunner>& device_task_runner); |
35 | 35 |
36 // Method called by the internal DeviceMonitorMacImpl object | 36 // Method called by the internal DeviceMonitorMacImpl object |
37 // |device_monitor_impl_| when a device of type |type| has been added to or | 37 // |device_monitor_impl_| when a device of type |type| has been added to or |
38 // removed from the system. This code executes in the notification thread. | 38 // removed from the system. This code executes in the notification thread. |
39 void NotifyDeviceChanged(base::SystemMonitor::DeviceType type); | 39 void NotifyDeviceChanged(base::SystemMonitor::DeviceType type); |
40 | 40 |
41 private: | 41 private: |
42 std::unique_ptr<DeviceMonitorMacImpl> device_monitor_impl_; | 42 std::unique_ptr<DeviceMonitorMacImpl> device_monitor_impl_; |
43 | 43 |
44 // |thread_checker_| is used to check that constructor and StartMonitoring() | 44 // |thread_checker_| is used to check that constructor and StartMonitoring() |
45 // are called in the correct thread, the UI thread, that also owns the object. | 45 // are called in the correct thread, the UI thread, that also owns the object. |
46 base::ThreadChecker thread_checker_; | 46 base::ThreadChecker thread_checker_; |
47 | 47 |
48 DISALLOW_COPY_AND_ASSIGN(DeviceMonitorMac); | 48 DISALLOW_COPY_AND_ASSIGN(DeviceMonitorMac); |
49 }; | 49 }; |
50 | 50 |
51 } // namespace content | 51 } // namespace content |
52 | 52 |
53 #endif // MEDIA_CAPTURE_DEVICE_MONITOR_MAC_H_ | 53 #endif // MEDIA_CAPTURE_DEVICE_MONITOR_MAC_H_ |
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