1 /* 2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef MODULES_AUDIO_PROCESSING_COMMON_H_ 12 #define MODULES_AUDIO_PROCESSING_COMMON_H_ 13 14 #include "modules/audio_processing/include/audio_processing.h" 15 #include "rtc_base/checks.h" 16 17 namespace webrtc { 18 ChannelsFromLayout(AudioProcessing::ChannelLayout layout)19static inline size_t ChannelsFromLayout(AudioProcessing::ChannelLayout layout) { 20 switch (layout) { 21 case AudioProcessing::kMono: 22 case AudioProcessing::kMonoAndKeyboard: 23 return 1; 24 case AudioProcessing::kStereo: 25 case AudioProcessing::kStereoAndKeyboard: 26 return 2; 27 } 28 RTC_NOTREACHED(); 29 return 0; 30 } 31 32 } // namespace webrtc 33 34 #endif // MODULES_AUDIO_PROCESSING_COMMON_H_ 35