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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 // AudioOutputDispatcherImpl is an implementation of AudioOutputDispatcher. | 5 // AudioOutputDispatcherImpl is an implementation of AudioOutputDispatcher. |
6 // | 6 // |
7 // To avoid opening and closing audio devices more frequently than necessary, | 7 // To avoid opening and closing audio devices more frequently than necessary, |
8 // each dispatcher has a pool of inactive physical streams. A stream is closed | 8 // each dispatcher has a pool of inactive physical streams. A stream is closed |
9 // only if it hasn't been used for a certain period of time (specified via the | 9 // only if it hasn't been used for a certain period of time (specified via the |
10 // constructor). | 10 // constructor). |
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52 // |stream| is added to the pool of pending streams (i.e. |idle_streams_|). | 52 // |stream| is added to the pool of pending streams (i.e. |idle_streams_|). |
53 virtual void StopStream(AudioOutputProxy* stream_proxy) OVERRIDE; | 53 virtual void StopStream(AudioOutputProxy* stream_proxy) OVERRIDE; |
54 | 54 |
55 virtual void StreamVolumeSet(AudioOutputProxy* stream_proxy, | 55 virtual void StreamVolumeSet(AudioOutputProxy* stream_proxy, |
56 double volume) OVERRIDE; | 56 double volume) OVERRIDE; |
57 | 57 |
58 virtual void CloseStream(AudioOutputProxy* stream_proxy) OVERRIDE; | 58 virtual void CloseStream(AudioOutputProxy* stream_proxy) OVERRIDE; |
59 | 59 |
60 virtual void Shutdown() OVERRIDE; | 60 virtual void Shutdown() OVERRIDE; |
61 | 61 |
62 virtual void CloseStreamsForWedgeFix() OVERRIDE; | |
63 virtual void RestartStreamsForWedgeFix() OVERRIDE; | |
64 | |
65 private: | 62 private: |
66 typedef std::map<AudioOutputProxy*, AudioOutputStream*> AudioStreamMap; | 63 typedef std::map<AudioOutputProxy*, AudioOutputStream*> AudioStreamMap; |
67 friend class base::RefCountedThreadSafe<AudioOutputDispatcherImpl>; | 64 friend class base::RefCountedThreadSafe<AudioOutputDispatcherImpl>; |
68 virtual ~AudioOutputDispatcherImpl(); | 65 virtual ~AudioOutputDispatcherImpl(); |
69 | 66 |
70 friend class AudioOutputProxyTest; | 67 friend class AudioOutputProxyTest; |
71 | 68 |
72 // Creates a new physical output stream, opens it and pushes to | 69 // Creates a new physical output stream, opens it and pushes to |
73 // |idle_streams_|. Returns false if the stream couldn't be created or | 70 // |idle_streams_|. Returns false if the stream couldn't be created or |
74 // opened. | 71 // opened. |
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92 base::DelayTimer<AudioOutputDispatcherImpl> close_timer_; | 89 base::DelayTimer<AudioOutputDispatcherImpl> close_timer_; |
93 | 90 |
94 AudioStreamMap proxy_to_physical_map_; | 91 AudioStreamMap proxy_to_physical_map_; |
95 | 92 |
96 DISALLOW_COPY_AND_ASSIGN(AudioOutputDispatcherImpl); | 93 DISALLOW_COPY_AND_ASSIGN(AudioOutputDispatcherImpl); |
97 }; | 94 }; |
98 | 95 |
99 } // namespace media | 96 } // namespace media |
100 | 97 |
101 #endif // MEDIA_AUDIO_AUDIO_OUTPUT_DISPATCHER_IMPL_H_ | 98 #endif // MEDIA_AUDIO_AUDIO_OUTPUT_DISPATCHER_IMPL_H_ |
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