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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 CHROME_BROWSER_CHROMEOS_CAMERA_PRESENCE_NOTIFIER_H_ | 5 #ifndef CHROME_BROWSER_CHROMEOS_CAMERA_PRESENCE_NOTIFIER_H_ |
6 #define CHROME_BROWSER_CHROMEOS_CAMERA_PRESENCE_NOTIFIER_H_ | 6 #define CHROME_BROWSER_CHROMEOS_CAMERA_PRESENCE_NOTIFIER_H_ |
7 | 7 |
8 #include "base/memory/singleton.h" | 8 #include "base/memory/singleton.h" |
9 #include "base/memory/weak_ptr.h" | 9 #include "base/memory/weak_ptr.h" |
10 #include "base/observer_list.h" | 10 #include "base/observer_list.h" |
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21 protected: | 21 protected: |
22 virtual ~Observer() {} | 22 virtual ~Observer() {} |
23 }; | 23 }; |
24 | 24 |
25 static CameraPresenceNotifier* GetInstance(); | 25 static CameraPresenceNotifier* GetInstance(); |
26 | 26 |
27 void AddObserver(CameraPresenceNotifier::Observer* observer); | 27 void AddObserver(CameraPresenceNotifier::Observer* observer); |
28 void RemoveObserver(CameraPresenceNotifier::Observer* observer); | 28 void RemoveObserver(CameraPresenceNotifier::Observer* observer); |
29 | 29 |
30 private: | 30 private: |
31 friend struct DefaultSingletonTraits<CameraPresenceNotifier>; | 31 friend struct base::DefaultSingletonTraits<CameraPresenceNotifier>; |
32 CameraPresenceNotifier(); | 32 CameraPresenceNotifier(); |
33 ~CameraPresenceNotifier(); | 33 ~CameraPresenceNotifier(); |
34 | 34 |
35 void CheckCameraPresence(); | 35 void CheckCameraPresence(); |
36 | 36 |
37 // Sends out a camera presence status notification. | 37 // Sends out a camera presence status notification. |
38 void OnCameraPresenceCheckDone(); | 38 void OnCameraPresenceCheckDone(); |
39 | 39 |
40 bool camera_present_on_last_check_; | 40 bool camera_present_on_last_check_; |
41 | 41 |
42 // Timer for camera check cycle. | 42 // Timer for camera check cycle. |
43 base::RepeatingTimer<CameraPresenceNotifier> camera_check_timer_; | 43 base::RepeatingTimer<CameraPresenceNotifier> camera_check_timer_; |
44 | 44 |
45 base::ObserverList<Observer> observers_; | 45 base::ObserverList<Observer> observers_; |
46 | 46 |
47 base::WeakPtrFactory<CameraPresenceNotifier> weak_factory_; | 47 base::WeakPtrFactory<CameraPresenceNotifier> weak_factory_; |
48 | 48 |
49 DISALLOW_COPY_AND_ASSIGN(CameraPresenceNotifier); | 49 DISALLOW_COPY_AND_ASSIGN(CameraPresenceNotifier); |
50 }; | 50 }; |
51 | 51 |
52 } // namespace chromeos | 52 } // namespace chromeos |
53 | 53 |
54 #endif // CHROME_BROWSER_CHROMEOS_CAMERA_PRESENCE_NOTIFIER_H_ | 54 #endif // CHROME_BROWSER_CHROMEOS_CAMERA_PRESENCE_NOTIFIER_H_ |
55 | 55 |
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