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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/virtual_audio_output_stream.h" | 5 #include "media/audio/virtual_audio_output_stream.h" |
| 6 | 6 |
| 7 #include "base/logging.h" | 7 #include "base/logging.h" |
| 8 #include "media/audio/virtual_audio_input_stream.h" | 8 #include "media/audio/virtual_audio_input_stream.h" |
| 9 | 9 |
| 10 namespace media { | 10 namespace media { |
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| 71 *volume = volume_; | 71 *volume = volume_; |
| 72 } | 72 } |
| 73 | 73 |
| 74 double VirtualAudioOutputStream::ProvideInput(AudioBus* audio_bus, | 74 double VirtualAudioOutputStream::ProvideInput(AudioBus* audio_bus, |
| 75 base::TimeDelta buffer_delay) { | 75 base::TimeDelta buffer_delay) { |
| 76 // Note: This method may be invoked on any one thread, depending on the | 76 // Note: This method may be invoked on any one thread, depending on the |
| 77 // platform. | 77 // platform. |
| 78 DCHECK(callback_); | 78 DCHECK(callback_); |
| 79 | 79 |
| 80 DCHECK_GE(buffer_delay, base::TimeDelta()); | 80 DCHECK_GE(buffer_delay, base::TimeDelta()); |
| 81 const int64 upstream_delay_in_bytes = | 81 const int64_t upstream_delay_in_bytes = params_.GetBytesPerSecond() * |
| 82 params_.GetBytesPerSecond() * buffer_delay / | 82 buffer_delay / |
| 83 base::TimeDelta::FromSeconds(1); | 83 base::TimeDelta::FromSeconds(1); |
| 84 const int frames = callback_->OnMoreData( | 84 const int frames = callback_->OnMoreData( |
| 85 audio_bus, static_cast<uint32>(upstream_delay_in_bytes), 0); | 85 audio_bus, static_cast<uint32_t>(upstream_delay_in_bytes), 0); |
| 86 if (frames < audio_bus->frames()) | 86 if (frames < audio_bus->frames()) |
| 87 audio_bus->ZeroFramesPartial(frames, audio_bus->frames() - frames); | 87 audio_bus->ZeroFramesPartial(frames, audio_bus->frames() - frames); |
| 88 | 88 |
| 89 return frames > 0 ? volume_ : 0; | 89 return frames > 0 ? volume_ : 0; |
| 90 } | 90 } |
| 91 | 91 |
| 92 } // namespace media | 92 } // namespace media |
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