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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 // AudioInputDeviceManager manages the audio input devices. In particular it | 5 // AudioInputDeviceManager manages the audio input devices. In particular it |
6 // communicates with MediaStreamManager and AudioInputRendererHost on the | 6 // communicates with MediaStreamManager and AudioInputRendererHost on the |
7 // browser IO thread, handles queries like | 7 // browser IO thread, handles queries like |
8 // enumerate/open/close/GetOpenedDeviceInfoById from MediaStreamManager and | 8 // enumerate/open/close/GetOpenedDeviceInfoById from MediaStreamManager and |
9 // GetOpenedDeviceInfoById from AudioInputRendererHost. | 9 // GetOpenedDeviceInfoById from AudioInputRendererHost. |
10 // The work for enumerate/open/close is handled asynchronously on Media Stream | 10 // The work for enumerate/open/close is handled asynchronously on Media Stream |
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40 | 40 |
41 explicit AudioInputDeviceManager(media::AudioManager* audio_manager); | 41 explicit AudioInputDeviceManager(media::AudioManager* audio_manager); |
42 | 42 |
43 // Gets the opened device info by |session_id|. Returns NULL if the device | 43 // Gets the opened device info by |session_id|. Returns NULL if the device |
44 // is not opened, otherwise the opened device. Called on IO thread. | 44 // is not opened, otherwise the opened device. Called on IO thread. |
45 const StreamDeviceInfo* GetOpenedDeviceInfoById(int session_id); | 45 const StreamDeviceInfo* GetOpenedDeviceInfoById(int session_id); |
46 | 46 |
47 // MediaStreamProvider implementation, called on IO thread. | 47 // MediaStreamProvider implementation, called on IO thread. |
48 virtual void Register(MediaStreamProviderListener* listener, | 48 virtual void Register(MediaStreamProviderListener* listener, |
49 const scoped_refptr<base::SingleThreadTaskRunner>& | 49 const scoped_refptr<base::SingleThreadTaskRunner>& |
50 device_task_runner) OVERRIDE; | 50 device_task_runner) override; |
51 virtual void Unregister() OVERRIDE; | 51 virtual void Unregister() override; |
52 virtual void EnumerateDevices(MediaStreamType stream_type) OVERRIDE; | 52 virtual void EnumerateDevices(MediaStreamType stream_type) override; |
53 virtual int Open(const StreamDeviceInfo& device) OVERRIDE; | 53 virtual int Open(const StreamDeviceInfo& device) override; |
54 virtual void Close(int session_id) OVERRIDE; | 54 virtual void Close(int session_id) override; |
55 | 55 |
56 void UseFakeDevice(); | 56 void UseFakeDevice(); |
57 bool ShouldUseFakeDevice() const; | 57 bool ShouldUseFakeDevice() const; |
58 | 58 |
59 #if defined(OS_CHROMEOS) | 59 #if defined(OS_CHROMEOS) |
60 // Registers and unregisters that a stream using keyboard mic has been opened | 60 // Registers and unregisters that a stream using keyboard mic has been opened |
61 // or closed. Keeps count of how many such streams are open and activates and | 61 // or closed. Keeps count of how many such streams are open and activates and |
62 // inactivates the keyboard mic accordingly. The (in)activation is done on the | 62 // inactivates the keyboard mic accordingly. The (in)activation is done on the |
63 // UI thread and for the register case a callback must therefor be provided | 63 // UI thread and for the register case a callback must therefor be provided |
64 // which is called when activated. | 64 // which is called when activated. |
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118 | 118 |
119 // The message loop of media stream device thread that this object runs on. | 119 // The message loop of media stream device thread that this object runs on. |
120 scoped_refptr<base::SingleThreadTaskRunner> device_task_runner_; | 120 scoped_refptr<base::SingleThreadTaskRunner> device_task_runner_; |
121 | 121 |
122 DISALLOW_COPY_AND_ASSIGN(AudioInputDeviceManager); | 122 DISALLOW_COPY_AND_ASSIGN(AudioInputDeviceManager); |
123 }; | 123 }; |
124 | 124 |
125 } // namespace content | 125 } // namespace content |
126 | 126 |
127 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_DEVICE_MANAGER_H_ | 127 #endif // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_DEVICE_MANAGER_H_ |
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