| // Copyright 2019 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "media/webrtc/helpers.h" |
| |
| namespace media { |
| |
| webrtc::StreamConfig CreateStreamConfig(const AudioParameters& parameters) { |
| const int rate = parameters.sample_rate(); |
| const bool has_keyboard = parameters.channel_layout() == |
| media::CHANNEL_LAYOUT_STEREO_AND_KEYBOARD_MIC; |
| int channels = |
| media::ChannelLayoutToChannelCount(parameters.channel_layout()); |
| // webrtc::StreamConfig requires that the keyboard mic channel is not included |
| // in the channel count. It may still be used. |
| if (has_keyboard) |
| channels -= 1; |
| return webrtc::StreamConfig(rate, channels, has_keyboard); |
| } |
| |
| bool LeftAndRightChannelsAreSymmetric(const AudioBus& audio) { |
| if (audio.channels() <= 1) { |
| return true; |
| } |
| return std::equal(audio.channel(0), audio.channel(0) + audio.frames(), |
| audio.channel(1)); |
| } |
| |
| } // namespace media |
