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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 "chrome/browser/chromeos/audio/audio_mixer_alsa.h" | 5 #include "chrome/browser/chromeos/audio/audio_mixer_alsa.h" |
6 | 6 |
7 #include <unistd.h> | 7 #include <unistd.h> |
8 | 8 |
9 #include <alsa/asoundlib.h> | 9 #include <alsa/asoundlib.h> |
10 | 10 |
11 #include <algorithm> | 11 #include <algorithm> |
12 #include <cmath> | 12 #include <cmath> |
13 | 13 |
14 #include "base/bind.h" | 14 #include "base/bind.h" |
15 #include "base/bind_helpers.h" | 15 #include "base/bind_helpers.h" |
| 16 #include "base/chromeos/chromeos_version.h" |
16 #include "base/logging.h" | 17 #include "base/logging.h" |
17 #include "base/message_loop.h" | 18 #include "base/message_loop.h" |
18 #include "base/threading/thread.h" | 19 #include "base/threading/thread.h" |
19 #include "base/threading/thread_restrictions.h" | 20 #include "base/threading/thread_restrictions.h" |
20 #include "chrome/browser/chromeos/system/runtime_environment.h" | |
21 #include "chrome/browser/extensions/extension_tts_api_chromeos.h" | 21 #include "chrome/browser/extensions/extension_tts_api_chromeos.h" |
22 #include "content/public/browser/browser_thread.h" | 22 #include "content/public/browser/browser_thread.h" |
23 | 23 |
24 typedef long alsa_long_t; // 'long' is required for ALSA API calls. | 24 typedef long alsa_long_t; // 'long' is required for ALSA API calls. |
25 | 25 |
26 using content::BrowserThread; | 26 using content::BrowserThread; |
27 using std::string; | 27 using std::string; |
28 | 28 |
29 namespace chromeos { | 29 namespace chromeos { |
30 | 30 |
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144 } | 144 } |
145 | 145 |
146 void AudioMixerAlsa::Connect() { | 146 void AudioMixerAlsa::Connect() { |
147 DCHECK(MessageLoop::current() == thread_->message_loop()); | 147 DCHECK(MessageLoop::current() == thread_->message_loop()); |
148 DCHECK(!alsa_mixer_); | 148 DCHECK(!alsa_mixer_); |
149 | 149 |
150 if (disconnected_event_.IsSignaled()) | 150 if (disconnected_event_.IsSignaled()) |
151 return; | 151 return; |
152 | 152 |
153 // Do not attempt to connect if we're not on the device. | 153 // Do not attempt to connect if we're not on the device. |
154 if (!system::runtime_environment::IsRunningOnChromeOS()) | 154 if (!base::chromeos::IsRunningOnChromeOS()) |
155 return; | 155 return; |
156 | 156 |
157 if (!ConnectInternal()) { | 157 if (!ConnectInternal()) { |
158 thread_->message_loop()->PostDelayedTask(FROM_HERE, | 158 thread_->message_loop()->PostDelayedTask(FROM_HERE, |
159 base::Bind(&AudioMixerAlsa::Connect, base::Unretained(this)), | 159 base::Bind(&AudioMixerAlsa::Connect, base::Unretained(this)), |
160 kConnectionRetrySleepSec * 1000); | 160 kConnectionRetrySleepSec * 1000); |
161 } | 161 } |
162 } | 162 } |
163 | 163 |
164 bool AudioMixerAlsa::ConnectInternal() { | 164 bool AudioMixerAlsa::ConnectInternal() { |
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430 (max_volume_db_ - min_volume_db_), 1/kVolumeBias); | 430 (max_volume_db_ - min_volume_db_), 1/kVolumeBias); |
431 } | 431 } |
432 | 432 |
433 double AudioMixerAlsa::PercentToDb(double percent) const { | 433 double AudioMixerAlsa::PercentToDb(double percent) const { |
434 lock_.AssertAcquired(); | 434 lock_.AssertAcquired(); |
435 return pow(percent / 100.0, kVolumeBias) * | 435 return pow(percent / 100.0, kVolumeBias) * |
436 (max_volume_db_ - min_volume_db_) + min_volume_db_; | 436 (max_volume_db_ - min_volume_db_) + min_volume_db_; |
437 } | 437 } |
438 | 438 |
439 } // namespace chromeos | 439 } // namespace chromeos |
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