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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 #include "media/audio/audio_manager_base.h" | 5 #include "media/audio/audio_manager_base.h" |
6 | 6 |
7 #include "base/bind.h" | 7 #include "base/bind.h" |
| 8 #include "base/command_line.h" |
8 #include "base/message_loop_proxy.h" | 9 #include "base/message_loop_proxy.h" |
9 #include "base/threading/thread.h" | 10 #include "base/threading/thread.h" |
10 #include "media/audio/audio_output_dispatcher.h" | 11 #include "media/audio/audio_output_dispatcher_impl.h" |
| 12 #include "media/audio/audio_output_mixer.h" |
11 #include "media/audio/audio_output_proxy.h" | 13 #include "media/audio/audio_output_proxy.h" |
12 #include "media/audio/fake_audio_input_stream.h" | 14 #include "media/audio/fake_audio_input_stream.h" |
13 #include "media/audio/fake_audio_output_stream.h" | 15 #include "media/audio/fake_audio_output_stream.h" |
| 16 #include "media/base/media_switches.h" |
14 | 17 |
15 static const int kStreamCloseDelaySeconds = 5; | 18 static const int kStreamCloseDelaySeconds = 5; |
16 | 19 |
17 // Default maximum number of output streams that can be open simultaneously | 20 // Default maximum number of output streams that can be open simultaneously |
18 // for all platforms. | 21 // for all platforms. |
19 static const int kDefaultMaxOutputStreams = 16; | 22 static const int kDefaultMaxOutputStreams = 16; |
20 | 23 |
21 // Default maximum number of input streams that can be open simultaneously | 24 // Default maximum number of input streams that can be open simultaneously |
22 // for all platforms. | 25 // for all platforms. |
23 static const int kDefaultMaxInputStreams = 16; | 26 static const int kDefaultMaxInputStreams = 16; |
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127 | 130 |
128 return stream; | 131 return stream; |
129 } | 132 } |
130 | 133 |
131 AudioOutputStream* AudioManagerBase::MakeAudioOutputStreamProxy( | 134 AudioOutputStream* AudioManagerBase::MakeAudioOutputStreamProxy( |
132 const AudioParameters& params) { | 135 const AudioParameters& params) { |
133 DCHECK(GetMessageLoop()->BelongsToCurrentThread()); | 136 DCHECK(GetMessageLoop()->BelongsToCurrentThread()); |
134 | 137 |
135 scoped_refptr<AudioOutputDispatcher>& dispatcher = | 138 scoped_refptr<AudioOutputDispatcher>& dispatcher = |
136 output_dispatchers_[params]; | 139 output_dispatchers_[params]; |
137 if (!dispatcher) | 140 if (!dispatcher) { |
138 dispatcher = new AudioOutputDispatcher( | 141 base::TimeDelta close_delay = |
139 this, params, base::TimeDelta::FromSeconds(kStreamCloseDelaySeconds)); | 142 base::TimeDelta::FromSeconds(kStreamCloseDelaySeconds); |
| 143 const CommandLine* cmd_line = CommandLine::ForCurrentProcess(); |
| 144 if (cmd_line->HasSwitch(switches::kEnableAudioMixer)) { |
| 145 dispatcher = new AudioOutputMixer(this, params, close_delay); |
| 146 } else { |
| 147 dispatcher = new AudioOutputDispatcherImpl(this, params, close_delay); |
| 148 } |
| 149 } |
140 return new AudioOutputProxy(dispatcher); | 150 return new AudioOutputProxy(dispatcher); |
141 } | 151 } |
142 | 152 |
143 bool AudioManagerBase::CanShowAudioInputSettings() { | 153 bool AudioManagerBase::CanShowAudioInputSettings() { |
144 return false; | 154 return false; |
145 } | 155 } |
146 | 156 |
147 void AudioManagerBase::ShowAudioInputSettings() { | 157 void AudioManagerBase::ShowAudioInputSettings() { |
148 } | 158 } |
149 | 159 |
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219 // both physical audio stream objects that belong to the dispatcher as | 229 // both physical audio stream objects that belong to the dispatcher as |
220 // well as the message loop of the audio thread that will soon go away. | 230 // well as the message loop of the audio thread that will soon go away. |
221 // So, better crash now than later. | 231 // So, better crash now than later. |
222 CHECK(dispatcher->HasOneRef()) << "AudioOutputProxies are still alive"; | 232 CHECK(dispatcher->HasOneRef()) << "AudioOutputProxies are still alive"; |
223 dispatcher = NULL; | 233 dispatcher = NULL; |
224 } | 234 } |
225 } | 235 } |
226 | 236 |
227 output_dispatchers_.clear(); | 237 output_dispatchers_.clear(); |
228 } | 238 } |
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