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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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 // Low-latency audio capturing unit utilizing audio input stream provided | 5 // Low-latency audio capturing unit utilizing audio input stream provided |
6 // by browser process through IPC. | 6 // by browser process through IPC. |
7 // | 7 // |
8 // Relationship of classes: | 8 // Relationship of classes: |
9 // | 9 // |
10 // AudioInputController AudioInputDevice | 10 // AudioInputController AudioInputDevice |
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157 private: | 157 private: |
158 // Methods called on IO thread ---------------------------------------------- | 158 // Methods called on IO thread ---------------------------------------------- |
159 // The following methods are tasks posted on the IO thread that needs to | 159 // The following methods are tasks posted on the IO thread that needs to |
160 // be executed on that thread. They interact with AudioInputMessageFilter and | 160 // be executed on that thread. They interact with AudioInputMessageFilter and |
161 // sends IPC messages on that thread. | 161 // sends IPC messages on that thread. |
162 void InitializeOnIOThread(); | 162 void InitializeOnIOThread(); |
163 void SetSessionIdOnIOThread(int session_id); | 163 void SetSessionIdOnIOThread(int session_id); |
164 void StartOnIOThread(); | 164 void StartOnIOThread(); |
165 void ShutDownOnIOThread(base::WaitableEvent* completion); | 165 void ShutDownOnIOThread(base::WaitableEvent* completion); |
166 void SetVolumeOnIOThread(double volume); | 166 void SetVolumeOnIOThread(double volume); |
| 167 // Closes socket and joins with the audio thread. |
| 168 void ShutDownAudioThread(); |
167 | 169 |
168 void Send(IPC::Message* message); | 170 void Send(IPC::Message* message); |
169 | 171 |
170 // Method called on the audio thread ---------------------------------------- | 172 // Method called on the audio thread ---------------------------------------- |
171 // Calls the client's callback for capturing audio. | 173 // Calls the client's callback for capturing audio. |
172 void FireCaptureCallback(int16* input_audio); | 174 void FireCaptureCallback(int16* input_audio); |
173 | 175 |
174 // DelegateSimpleThread::Delegate implementation. | 176 // DelegateSimpleThread::Delegate implementation. |
175 virtual void Run() OVERRIDE; | 177 virtual void Run() OVERRIDE; |
176 | 178 |
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202 | 204 |
203 // The media session ID used to identify which input device to be started. | 205 // The media session ID used to identify which input device to be started. |
204 // Only modified on the IO thread. | 206 // Only modified on the IO thread. |
205 int session_id_; | 207 int session_id_; |
206 | 208 |
207 // State variable used to indicate it is waiting for a OnDeviceReady() | 209 // State variable used to indicate it is waiting for a OnDeviceReady() |
208 // callback. Only modified on the IO thread. | 210 // callback. Only modified on the IO thread. |
209 bool pending_device_ready_; | 211 bool pending_device_ready_; |
210 | 212 |
211 base::SharedMemoryHandle shared_memory_handle_; | 213 base::SharedMemoryHandle shared_memory_handle_; |
212 base::SyncSocket::Handle socket_handle_; | 214 scoped_ptr<base::CancelableSyncSocket> audio_socket_; |
213 int memory_length_; | 215 int memory_length_; |
214 | 216 |
215 DISALLOW_IMPLICIT_CONSTRUCTORS(AudioInputDevice); | 217 DISALLOW_IMPLICIT_CONSTRUCTORS(AudioInputDevice); |
216 }; | 218 }; |
217 | 219 |
218 #endif // CONTENT_RENDERER_MEDIA_AUDIO_INPUT_DEVICE_H_ | 220 #endif // CONTENT_RENDERER_MEDIA_AUDIO_INPUT_DEVICE_H_ |
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