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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 "content/renderer/media/media_stream_audio_processor.h" | 5 #include "content/renderer/media/media_stream_audio_processor.h" |
6 | 6 |
7 #include "base/command_line.h" | 7 #include "base/command_line.h" |
8 #include "base/metrics/field_trial.h" | 8 #include "base/metrics/field_trial.h" |
9 #include "base/metrics/histogram.h" | 9 #include "base/metrics/histogram.h" |
10 #include "base/trace_event/trace_event.h" | 10 #include "base/trace_event/trace_event.h" |
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130 int source_frames, | 130 int source_frames, |
131 int destination_frames, | 131 int destination_frames, |
132 int sample_rate) | 132 int sample_rate) |
133 : source_channels_(source_channels), | 133 : source_channels_(source_channels), |
134 source_frames_(source_frames), | 134 source_frames_(source_frames), |
135 sample_rate_(sample_rate), | 135 sample_rate_(sample_rate), |
136 destination_( | 136 destination_( |
137 new MediaStreamAudioBus(destination_channels, destination_frames)), | 137 new MediaStreamAudioBus(destination_channels, destination_frames)), |
138 data_available_(false) { | 138 data_available_(false) { |
139 DCHECK_GE(source_channels, destination_channels); | 139 DCHECK_GE(source_channels, destination_channels); |
140 DCHECK_GT(sample_rate_, 0); | 140 DCHECK_GE(sample_rate_, 8000); |
141 DCHECK_LE(sample_rate_, 48000); | |
mcasas
2015/10/09 23:48:48
Nit: Could |sample_rate| be a |size_t| ?
Henrik Grunell
2015/10/12 08:02:57
Not sure what you're after here. Why should it be
| |
141 | 142 |
142 if (source_channels > destination_channels) { | 143 if (source_channels > destination_channels) { |
143 audio_source_intermediate_ = | 144 audio_source_intermediate_ = |
144 media::AudioBus::CreateWrapper(destination_channels); | 145 media::AudioBus::CreateWrapper(destination_channels); |
145 } | 146 } |
146 | 147 |
147 if (source_frames != destination_frames) { | 148 if (source_frames != destination_frames) { |
148 // Since we require every Push to be followed by as many Consumes as | 149 // Since we require every Push to be followed by as many Consumes as |
149 // possible, twice the larger of the two is a (probably) loose upper bound | 150 // possible, twice the larger of the two is a (probably) loose upper bound |
150 // on the FIFO size. | 151 // on the FIFO size. |
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678 if (echo_information_) { | 679 if (echo_information_) { |
679 echo_information_.get()->UpdateAecDelayStats(ap->echo_cancellation()); | 680 echo_information_.get()->UpdateAecDelayStats(ap->echo_cancellation()); |
680 } | 681 } |
681 | 682 |
682 // Return 0 if the volume hasn't been changed, and otherwise the new volume. | 683 // Return 0 if the volume hasn't been changed, and otherwise the new volume. |
683 return (agc->stream_analog_level() == volume) ? | 684 return (agc->stream_analog_level() == volume) ? |
684 0 : agc->stream_analog_level(); | 685 0 : agc->stream_analog_level(); |
685 } | 686 } |
686 | 687 |
687 } // namespace content | 688 } // namespace content |
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