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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/base/audio_renderer_mixer_input.h" | 5 #include "media/base/audio_renderer_mixer_input.h" |
6 | 6 |
7 #include <cmath> | 7 #include <cmath> |
8 | 8 |
9 #include "base/bind.h" | 9 #include "base/bind.h" |
10 #include "base/callback_helpers.h" | 10 #include "base/callback_helpers.h" |
11 #include "media/base/audio_renderer_mixer.h" | 11 #include "media/base/audio_renderer_mixer.h" |
12 | 12 |
13 namespace media { | 13 namespace media { |
14 | 14 |
15 AudioRendererMixerInput::AudioRendererMixerInput( | 15 AudioRendererMixerInput::AudioRendererMixerInput( |
16 const GetMixerCB& get_mixer_cb, | 16 const GetMixerCB& get_mixer_cb, |
17 const RemoveMixerCB& remove_mixer_cb, | 17 const RemoveMixerCB& remove_mixer_cb, |
18 const GetHardwareParamsCB& get_hardware_params_cb, | |
19 const std::string& device_id, | 18 const std::string& device_id, |
20 const url::Origin& security_origin) | 19 const url::Origin& security_origin) |
21 : started_(false), | 20 : started_(false), |
22 playing_(false), | 21 playing_(false), |
23 volume_(1.0f), | 22 volume_(1.0f), |
24 get_mixer_cb_(get_mixer_cb), | 23 get_mixer_cb_(get_mixer_cb), |
25 remove_mixer_cb_(remove_mixer_cb), | 24 remove_mixer_cb_(remove_mixer_cb), |
26 get_hardware_params_cb_(get_hardware_params_cb), | |
27 device_id_(device_id), | 25 device_id_(device_id), |
28 security_origin_(security_origin), | 26 security_origin_(security_origin), |
29 mixer_(nullptr), | 27 mixer_(nullptr), |
30 callback_(nullptr), | 28 callback_(nullptr), |
31 error_cb_(base::Bind(&AudioRendererMixerInput::OnRenderError, | 29 error_cb_(base::Bind(&AudioRendererMixerInput::OnRenderError, |
32 base::Unretained(this))) {} | 30 base::Unretained(this))) {} |
33 | 31 |
34 AudioRendererMixerInput::~AudioRendererMixerInput() { | 32 AudioRendererMixerInput::~AudioRendererMixerInput() { |
35 DCHECK(!started_); | 33 DCHECK(!started_); |
36 DCHECK(!mixer_); | 34 DCHECK(!mixer_); |
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106 mixer_->RemoveMixerInput(params_, this); | 104 mixer_->RemoveMixerInput(params_, this); |
107 playing_ = false; | 105 playing_ = false; |
108 } | 106 } |
109 | 107 |
110 bool AudioRendererMixerInput::SetVolume(double volume) { | 108 bool AudioRendererMixerInput::SetVolume(double volume) { |
111 base::AutoLock auto_lock(volume_lock_); | 109 base::AutoLock auto_lock(volume_lock_); |
112 volume_ = volume; | 110 volume_ = volume; |
113 return true; | 111 return true; |
114 } | 112 } |
115 | 113 |
116 OutputDevice* AudioRendererMixerInput::GetOutputDevice() { | 114 OutputDeviceInfo AudioRendererMixerInput::GetOutputDeviceInfo() { |
117 return this; | 115 return mixer_ ? mixer_->GetOutputDeviceInfo() : OutputDeviceInfo(); |
118 } | 116 } |
119 | 117 |
120 void AudioRendererMixerInput::SwitchOutputDevice( | 118 void AudioRendererMixerInput::SwitchOutputDevice( |
121 const std::string& device_id, | 119 const std::string& device_id, |
122 const url::Origin& security_origin, | 120 const url::Origin& security_origin, |
123 const SwitchOutputDeviceCB& callback) { | 121 const OutputDeviceStatusCB& callback) { |
124 if (!mixer_) { | 122 if (!mixer_) { |
125 if (pending_switch_callback_.is_null()) { | 123 if (pending_switch_callback_.is_null()) { |
126 pending_switch_callback_ = callback; | 124 pending_switch_callback_ = callback; |
127 pending_switch_device_id_ = device_id; | 125 pending_switch_device_id_ = device_id; |
128 pending_switch_security_origin_ = security_origin; | 126 pending_switch_security_origin_ = security_origin; |
129 } else { | 127 } else { |
130 callback.Run(OUTPUT_DEVICE_STATUS_ERROR_INTERNAL); | 128 callback.Run(OUTPUT_DEVICE_STATUS_ERROR_INTERNAL); |
131 } | 129 } |
132 | 130 |
133 return; | 131 return; |
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154 mixer_ = new_mixer; | 152 mixer_ = new_mixer; |
155 mixer_->AddErrorCallback(error_cb_); | 153 mixer_->AddErrorCallback(error_cb_); |
156 started_ = true; | 154 started_ = true; |
157 | 155 |
158 if (was_playing) | 156 if (was_playing) |
159 Play(); | 157 Play(); |
160 | 158 |
161 callback.Run(OUTPUT_DEVICE_STATUS_OK); | 159 callback.Run(OUTPUT_DEVICE_STATUS_OK); |
162 } | 160 } |
163 | 161 |
164 AudioParameters AudioRendererMixerInput::GetOutputParameters() { | |
165 if (mixer_) | |
166 return mixer_->GetOutputDevice()->GetOutputParameters(); | |
167 return get_hardware_params_cb_.Run(device_id_, security_origin_); | |
168 } | |
169 | |
170 OutputDeviceStatus AudioRendererMixerInput::GetDeviceStatus() { | |
171 if (mixer_) | |
172 return mixer_->GetOutputDevice()->GetDeviceStatus(); | |
173 | |
174 if (started_) | |
175 return OUTPUT_DEVICE_STATUS_ERROR_INTERNAL; | |
176 | |
177 return OUTPUT_DEVICE_STATUS_OK; | |
178 } | |
179 | |
180 double AudioRendererMixerInput::ProvideInput(AudioBus* audio_bus, | 162 double AudioRendererMixerInput::ProvideInput(AudioBus* audio_bus, |
181 base::TimeDelta buffer_delay) { | 163 base::TimeDelta buffer_delay) { |
182 // TODO(chcunningham): Delete this conversion and change ProvideInput to more | 164 // TODO(chcunningham): Delete this conversion and change ProvideInput to more |
183 // precisely describe delay as a count of frames delayed instead of TimeDelta. | 165 // precisely describe delay as a count of frames delayed instead of TimeDelta. |
184 // See http://crbug.com/587522. | 166 // See http://crbug.com/587522. |
185 uint32_t frames_delayed = std::round(buffer_delay.InMicroseconds() / | 167 uint32_t frames_delayed = std::round(buffer_delay.InMicroseconds() / |
186 params_.GetMicrosecondsPerFrame()); | 168 params_.GetMicrosecondsPerFrame()); |
187 | 169 |
188 int frames_filled = callback_->Render(audio_bus, frames_delayed, 0); | 170 int frames_filled = callback_->Render(audio_bus, frames_delayed, 0); |
189 | 171 |
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200 base::AutoLock auto_lock(volume_lock_); | 182 base::AutoLock auto_lock(volume_lock_); |
201 return frames_filled > 0 ? volume_ : 0; | 183 return frames_filled > 0 ? volume_ : 0; |
202 } | 184 } |
203 } | 185 } |
204 | 186 |
205 void AudioRendererMixerInput::OnRenderError() { | 187 void AudioRendererMixerInput::OnRenderError() { |
206 callback_->OnRenderError(); | 188 callback_->OnRenderError(); |
207 } | 189 } |
208 | 190 |
209 } // namespace media | 191 } // namespace media |
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