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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/bind_helpers.h" | 8 #include "base/bind_helpers.h" |
9 #include "base/command_line.h" | 9 #include "base/command_line.h" |
10 #include "base/message_loop_proxy.h" | 10 #include "base/message_loop_proxy.h" |
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67 dispatcher_->output_params == dispatcher_in->output_params && | 67 dispatcher_->output_params == dispatcher_in->output_params && |
68 (!dispatcher_->input_params.input_channels() || | 68 (!dispatcher_->input_params.input_channels() || |
69 dispatcher_->input_device_id == dispatcher_in->input_device_id)); | 69 dispatcher_->input_device_id == dispatcher_in->input_device_id)); |
70 } | 70 } |
71 | 71 |
72 private: | 72 private: |
73 const DispatcherParams* dispatcher_; | 73 const DispatcherParams* dispatcher_; |
74 }; | 74 }; |
75 | 75 |
76 AudioManagerBase::AudioManagerBase() | 76 AudioManagerBase::AudioManagerBase() |
77 : num_active_input_streams_(0), | 77 : max_num_output_streams_(kDefaultMaxOutputStreams), |
78 max_num_output_streams_(kDefaultMaxOutputStreams), | |
79 max_num_input_streams_(kDefaultMaxInputStreams), | 78 max_num_input_streams_(kDefaultMaxInputStreams), |
80 num_output_streams_(0), | 79 num_output_streams_(0), |
81 num_input_streams_(0), | 80 num_input_streams_(0), |
82 // TODO(dalecurtis): Switch this to an ObserverListThreadSafe, so we don't | 81 // TODO(dalecurtis): Switch this to an ObserverListThreadSafe, so we don't |
83 // block the UI thread when swapping devices. | 82 // block the UI thread when swapping devices. |
84 output_listeners_( | 83 output_listeners_( |
85 ObserverList<AudioDeviceListener>::NOTIFY_EXISTING_ONLY), | 84 ObserverList<AudioDeviceListener>::NOTIFY_EXISTING_ONLY), |
86 audio_thread_(new base::Thread("AudioThread")) { | 85 audio_thread_(new base::Thread("AudioThread")) { |
87 #if defined(OS_WIN) | 86 #if defined(OS_WIN) |
88 audio_thread_->init_com_with_mta(true); | 87 audio_thread_->init_com_with_mta(true); |
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304 delete stream; | 303 delete stream; |
305 } | 304 } |
306 | 305 |
307 void AudioManagerBase::ReleaseInputStream(AudioInputStream* stream) { | 306 void AudioManagerBase::ReleaseInputStream(AudioInputStream* stream) { |
308 DCHECK(stream); | 307 DCHECK(stream); |
309 // TODO(xians) : Have a clearer destruction path for the AudioInputStream. | 308 // TODO(xians) : Have a clearer destruction path for the AudioInputStream. |
310 --num_input_streams_; | 309 --num_input_streams_; |
311 delete stream; | 310 delete stream; |
312 } | 311 } |
313 | 312 |
314 void AudioManagerBase::IncreaseActiveInputStreamCount() { | |
315 base::AtomicRefCountInc(&num_active_input_streams_); | |
316 } | |
317 | |
318 void AudioManagerBase::DecreaseActiveInputStreamCount() { | |
319 DCHECK(IsRecordingInProcess()); | |
320 base::AtomicRefCountDec(&num_active_input_streams_); | |
321 } | |
322 | |
323 bool AudioManagerBase::IsRecordingInProcess() { | |
324 return !base::AtomicRefCountIsZero(&num_active_input_streams_); | |
325 } | |
326 | |
327 void AudioManagerBase::Shutdown() { | 313 void AudioManagerBase::Shutdown() { |
328 // To avoid running into deadlocks while we stop the thread, shut it down | 314 // To avoid running into deadlocks while we stop the thread, shut it down |
329 // via a local variable while not holding the audio thread lock. | 315 // via a local variable while not holding the audio thread lock. |
330 scoped_ptr<base::Thread> audio_thread; | 316 scoped_ptr<base::Thread> audio_thread; |
331 { | 317 { |
332 base::AutoLock lock(audio_thread_lock_); | 318 base::AutoLock lock(audio_thread_lock_); |
333 audio_thread_.swap(audio_thread); | 319 audio_thread_.swap(audio_thread); |
334 } | 320 } |
335 | 321 |
336 if (!audio_thread) | 322 if (!audio_thread) |
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399 return GetPreferredOutputStreamParameters(AudioParameters()); | 385 return GetPreferredOutputStreamParameters(AudioParameters()); |
400 } | 386 } |
401 | 387 |
402 AudioParameters AudioManagerBase::GetInputStreamParameters( | 388 AudioParameters AudioManagerBase::GetInputStreamParameters( |
403 const std::string& device_id) { | 389 const std::string& device_id) { |
404 NOTREACHED(); | 390 NOTREACHED(); |
405 return AudioParameters(); | 391 return AudioParameters(); |
406 } | 392 } |
407 | 393 |
408 } // namespace media | 394 } // namespace media |
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