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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/fake_audio_input_stream.h" | 5 #include "media/audio/fake_audio_input_stream.h" |
| 6 | 6 |
| 7 #include "base/bind.h" | 7 #include "base/bind.h" |
| 8 #include "base/lazy_instance.h" | 8 #include "base/lazy_instance.h" |
| 9 #include "media/audio/audio_manager_base.h" | 9 #include "media/audio/audio_manager_base.h" |
| 10 #include "media/base/audio_bus.h" | |
| 11 | 10 |
| 12 using base::TimeTicks; | 11 using base::TimeTicks; |
| 13 using base::TimeDelta; | 12 using base::TimeDelta; |
| 14 | 13 |
| 15 namespace media { | 14 namespace media { |
| 16 | 15 |
| 17 namespace { | 16 namespace { |
| 18 | 17 |
| 19 // These values are based on experiments for local-to-local | 18 // These values are based on experiments for local-to-local |
| 20 // PeerConnection to demonstrate audio/video synchronization. | 19 // PeerConnection to demonstrate audio/video synchronization. |
| (...skipping 21 matching lines...) Expand all Loading... |
| 42 AudioManagerBase* manager, | 41 AudioManagerBase* manager, |
| 43 const AudioParameters& params) { | 42 const AudioParameters& params) { |
| 44 return new FakeAudioInputStream(manager, params); | 43 return new FakeAudioInputStream(manager, params); |
| 45 } | 44 } |
| 46 | 45 |
| 47 FakeAudioInputStream::FakeAudioInputStream(AudioManagerBase* manager, | 46 FakeAudioInputStream::FakeAudioInputStream(AudioManagerBase* manager, |
| 48 const AudioParameters& params) | 47 const AudioParameters& params) |
| 49 : audio_manager_(manager), | 48 : audio_manager_(manager), |
| 50 callback_(NULL), | 49 callback_(NULL), |
| 51 buffer_size_((params.channels() * params.bits_per_sample() * | 50 buffer_size_((params.channels() * params.bits_per_sample() * |
| 52 params.frames_per_buffer()) / | 51 params.frames_per_buffer()) / 8), |
| 53 8), | |
| 54 params_(params), | 52 params_(params), |
| 55 thread_("FakeAudioRecordingThread"), | 53 thread_("FakeAudioRecordingThread"), |
| 56 callback_interval_(base::TimeDelta::FromMilliseconds( | 54 callback_interval_(base::TimeDelta::FromMilliseconds( |
| 57 (params.frames_per_buffer() * 1000) / params.sample_rate())), | 55 (params.frames_per_buffer() * 1000) / params.sample_rate())), |
| 58 beep_duration_in_buffers_(kBeepDurationMilliseconds * | 56 beep_duration_in_buffers_( |
| 59 params.sample_rate() / | 57 kBeepDurationMilliseconds * params.sample_rate() / |
| 60 params.frames_per_buffer() / | 58 params.frames_per_buffer() / 1000), |
| 61 1000), | |
| 62 beep_generated_in_buffers_(0), | 59 beep_generated_in_buffers_(0), |
| 63 beep_period_in_frames_(params.sample_rate() / kBeepFrequency), | 60 beep_period_in_frames_(params.sample_rate() / kBeepFrequency), |
| 64 frames_elapsed_(0), | 61 frames_elapsed_(0) { |
| 65 audio_bus_(AudioBus::Create(params)) { | |
| 66 } | 62 } |
| 67 | 63 |
| 68 FakeAudioInputStream::~FakeAudioInputStream() {} | 64 FakeAudioInputStream::~FakeAudioInputStream() {} |
| 69 | 65 |
| 70 bool FakeAudioInputStream::Open() { | 66 bool FakeAudioInputStream::Open() { |
| 71 buffer_.reset(new uint8[buffer_size_]); | 67 buffer_.reset(new uint8[buffer_size_]); |
| 72 memset(buffer_.get(), 0, buffer_size_); | 68 memset(buffer_.get(), 0, buffer_size_); |
| 73 audio_bus_->Zero(); | |
| 74 return true; | 69 return true; |
| 75 } | 70 } |
| 76 | 71 |
| 77 void FakeAudioInputStream::Start(AudioInputCallback* callback) { | 72 void FakeAudioInputStream::Start(AudioInputCallback* callback) { |
| 78 DCHECK(!thread_.IsRunning()); | 73 DCHECK(!thread_.IsRunning()); |
| 79 DCHECK(!callback_); | 74 DCHECK(!callback_); |
| 80 callback_ = callback; | 75 callback_ = callback; |
| 81 last_callback_time_ = TimeTicks::Now(); | 76 last_callback_time_ = TimeTicks::Now(); |
| 82 thread_.Start(); | 77 thread_.Start(); |
| 83 thread_.message_loop()->PostDelayedTask( | 78 thread_.message_loop()->PostDelayedTask( |
| (...skipping 55 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 139 memset(buffer_.get() + position, 128, high_bytes); | 134 memset(buffer_.get() + position, 128, high_bytes); |
| 140 // Then leave low values in the buffer with |high_bytes|. | 135 // Then leave low values in the buffer with |high_bytes|. |
| 141 position += high_bytes * 2; | 136 position += high_bytes * 2; |
| 142 } | 137 } |
| 143 | 138 |
| 144 ++beep_generated_in_buffers_; | 139 ++beep_generated_in_buffers_; |
| 145 if (beep_generated_in_buffers_ >= beep_duration_in_buffers_) | 140 if (beep_generated_in_buffers_ >= beep_duration_in_buffers_) |
| 146 beep_generated_in_buffers_ = 0; | 141 beep_generated_in_buffers_ = 0; |
| 147 } | 142 } |
| 148 | 143 |
| 149 audio_bus_->FromInterleaved( | 144 callback_->OnData(this, buffer_.get(), buffer_size_, buffer_size_, 1.0); |
| 150 buffer_.get(), audio_bus_->frames(), params_.bits_per_sample() / 8); | |
| 151 callback_->OnData(this, audio_bus_.get(), buffer_size_, 1.0); | |
| 152 frames_elapsed_ += params_.frames_per_buffer(); | 145 frames_elapsed_ += params_.frames_per_buffer(); |
| 153 | 146 |
| 154 thread_.message_loop()->PostDelayedTask( | 147 thread_.message_loop()->PostDelayedTask( |
| 155 FROM_HERE, | 148 FROM_HERE, |
| 156 base::Bind(&FakeAudioInputStream::DoCallback, base::Unretained(this)), | 149 base::Bind(&FakeAudioInputStream::DoCallback, base::Unretained(this)), |
| 157 next_callback_time); | 150 next_callback_time); |
| 158 } | 151 } |
| 159 | 152 |
| 160 void FakeAudioInputStream::Stop() { | 153 void FakeAudioInputStream::Stop() { |
| 161 thread_.Stop(); | 154 thread_.Stop(); |
| (...skipping 23 matching lines...) Expand all Loading... |
| 185 | 178 |
| 186 // static | 179 // static |
| 187 void FakeAudioInputStream::BeepOnce() { | 180 void FakeAudioInputStream::BeepOnce() { |
| 188 BeepContext* beep_context = g_beep_context.Pointer(); | 181 BeepContext* beep_context = g_beep_context.Pointer(); |
| 189 base::AutoLock auto_lock(beep_context->beep_lock); | 182 base::AutoLock auto_lock(beep_context->beep_lock); |
| 190 beep_context->beep_once = true; | 183 beep_context->beep_once = true; |
| 191 beep_context->automatic = false; | 184 beep_context->automatic = false; |
| 192 } | 185 } |
| 193 | 186 |
| 194 } // namespace media | 187 } // namespace media |
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