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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/null_audio_sink.h" | 5 #include "media/audio/null_audio_sink.h" |
6 | 6 |
7 #include "base/bind.h" | 7 #include "base/bind.h" |
8 #include "base/location.h" | 8 #include "base/location.h" |
9 #include "base/single_thread_task_runner.h" | 9 #include "base/single_thread_task_runner.h" |
10 #include "media/audio/fake_audio_worker.h" | 10 #include "media/audio/fake_audio_worker.h" |
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72 | 72 |
73 bool NullAudioSink::SetVolume(double volume) { | 73 bool NullAudioSink::SetVolume(double volume) { |
74 // Audio is always muted. | 74 // Audio is always muted. |
75 return volume == 0.0; | 75 return volume == 0.0; |
76 } | 76 } |
77 | 77 |
78 OutputDeviceInfo NullAudioSink::GetOutputDeviceInfo() { | 78 OutputDeviceInfo NullAudioSink::GetOutputDeviceInfo() { |
79 return OutputDeviceInfo(); | 79 return OutputDeviceInfo(); |
80 } | 80 } |
81 | 81 |
| 82 bool NullAudioSink::CurrentThreadIsRenderingThread() { |
| 83 return task_runner_->BelongsToCurrentThread(); |
| 84 } |
| 85 |
82 void NullAudioSink::SwitchOutputDevice(const std::string& device_id, | 86 void NullAudioSink::SwitchOutputDevice(const std::string& device_id, |
83 const url::Origin& security_origin, | 87 const url::Origin& security_origin, |
84 const OutputDeviceStatusCB& callback) { | 88 const OutputDeviceStatusCB& callback) { |
85 callback.Run(OUTPUT_DEVICE_STATUS_ERROR_INTERNAL); | 89 callback.Run(OUTPUT_DEVICE_STATUS_ERROR_INTERNAL); |
86 } | 90 } |
87 | 91 |
88 void NullAudioSink::CallRender() { | 92 void NullAudioSink::CallRender() { |
89 DCHECK(task_runner_->BelongsToCurrentThread()); | 93 DCHECK(task_runner_->BelongsToCurrentThread()); |
90 | 94 |
91 int frames_received = callback_->Render(audio_bus_.get(), 0, 0); | 95 int frames_received = callback_->Render(audio_bus_.get(), 0, 0); |
92 if (!audio_hash_ || frames_received <= 0) | 96 if (!audio_hash_ || frames_received <= 0) |
93 return; | 97 return; |
94 | 98 |
95 audio_hash_->Update(audio_bus_.get(), frames_received); | 99 audio_hash_->Update(audio_bus_.get(), frames_received); |
96 } | 100 } |
97 | 101 |
98 void NullAudioSink::StartAudioHashForTesting() { | 102 void NullAudioSink::StartAudioHashForTesting() { |
99 DCHECK(!initialized_); | 103 DCHECK(!initialized_); |
100 audio_hash_.reset(new AudioHash()); | 104 audio_hash_.reset(new AudioHash()); |
101 } | 105 } |
102 | 106 |
103 std::string NullAudioSink::GetAudioHashForTesting() { | 107 std::string NullAudioSink::GetAudioHashForTesting() { |
104 return audio_hash_ ? audio_hash_->ToString() : std::string(); | 108 return audio_hash_ ? audio_hash_->ToString() : std::string(); |
105 } | 109 } |
106 | 110 |
107 } // namespace media | 111 } // namespace media |
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