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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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/alsa/alsa_input.h" | 5 #include "media/audio/alsa/alsa_input.h" |
6 | 6 |
7 #include "base/basictypes.h" | 7 #include "base/basictypes.h" |
8 #include "base/bind.h" | 8 #include "base/bind.h" |
9 #include "base/logging.h" | 9 #include "base/logging.h" |
10 #include "base/message_loop/message_loop.h" | 10 #include "base/message_loop/message_loop.h" |
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25 const char AlsaPcmInputStream::kAutoSelectDevice[] = ""; | 25 const char AlsaPcmInputStream::kAutoSelectDevice[] = ""; |
26 | 26 |
27 AlsaPcmInputStream::AlsaPcmInputStream(AudioManagerBase* audio_manager, | 27 AlsaPcmInputStream::AlsaPcmInputStream(AudioManagerBase* audio_manager, |
28 const std::string& device_name, | 28 const std::string& device_name, |
29 const AudioParameters& params, | 29 const AudioParameters& params, |
30 AlsaWrapper* wrapper) | 30 AlsaWrapper* wrapper) |
31 : audio_manager_(audio_manager), | 31 : audio_manager_(audio_manager), |
32 device_name_(device_name), | 32 device_name_(device_name), |
33 params_(params), | 33 params_(params), |
34 bytes_per_buffer_(params.frames_per_buffer() * | 34 bytes_per_buffer_(params.frames_per_buffer() * |
35 (params.channels() * params.bits_per_sample()) / 8), | 35 (params.channels() * params.bits_per_sample()) / |
| 36 8), |
36 wrapper_(wrapper), | 37 wrapper_(wrapper), |
37 buffer_duration_(base::TimeDelta::FromMicroseconds( | 38 buffer_duration_(base::TimeDelta::FromMicroseconds( |
38 params.frames_per_buffer() * base::Time::kMicrosecondsPerSecond / | 39 params.frames_per_buffer() * base::Time::kMicrosecondsPerSecond / |
39 static_cast<float>(params.sample_rate()))), | 40 static_cast<float>(params.sample_rate()))), |
40 callback_(NULL), | 41 callback_(NULL), |
41 device_handle_(NULL), | 42 device_handle_(NULL), |
42 mixer_handle_(NULL), | 43 mixer_handle_(NULL), |
43 mixer_element_handle_(NULL), | 44 mixer_element_handle_(NULL), |
44 weak_factory_(this), | 45 read_callback_behind_schedule_(false), |
45 read_callback_behind_schedule_(false) { | 46 weak_factory_(this) {} |
46 } | |
47 | 47 |
48 AlsaPcmInputStream::~AlsaPcmInputStream() {} | 48 AlsaPcmInputStream::~AlsaPcmInputStream() {} |
49 | 49 |
50 bool AlsaPcmInputStream::Open() { | 50 bool AlsaPcmInputStream::Open() { |
51 if (device_handle_) | 51 if (device_handle_) |
52 return false; // Already open. | 52 return false; // Already open. |
53 | 53 |
54 snd_pcm_format_t pcm_format = alsa_util::BitsToFormat( | 54 snd_pcm_format_t pcm_format = alsa_util::BitsToFormat( |
55 params_.bits_per_sample()); | 55 params_.bits_per_sample()); |
56 if (pcm_format == SND_PCM_FORMAT_UNKNOWN) { | 56 if (pcm_format == SND_PCM_FORMAT_UNKNOWN) { |
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330 | 330 |
331 return static_cast<double>(current_volume); | 331 return static_cast<double>(current_volume); |
332 } | 332 } |
333 | 333 |
334 void AlsaPcmInputStream::HandleError(const char* method, int error) { | 334 void AlsaPcmInputStream::HandleError(const char* method, int error) { |
335 LOG(WARNING) << method << ": " << wrapper_->StrError(error); | 335 LOG(WARNING) << method << ": " << wrapper_->StrError(error); |
336 callback_->OnError(this); | 336 callback_->OnError(this); |
337 } | 337 } |
338 | 338 |
339 } // namespace media | 339 } // namespace media |
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