1 /* 2 * Copyright (c) 2015 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 #ifndef CALL_AUDIO_STATE_H_ 11 #define CALL_AUDIO_STATE_H_ 12 13 #include "api/audio/audio_mixer.h" 14 #include "api/scoped_refptr.h" 15 #include "modules/audio_device/include/audio_device.h" 16 #include "modules/audio_processing/include/audio_processing.h" 17 #include "rtc_base/ref_count.h" 18 19 namespace webrtc { 20 21 class AudioTransport; 22 23 // AudioState holds the state which must be shared between multiple instances of 24 // webrtc::Call for audio processing purposes. 25 class AudioState : public rtc::RefCountInterface { 26 public: 27 struct Config { 28 Config(); 29 ~Config(); 30 31 // The audio mixer connected to active receive streams. One per 32 // AudioState. 33 rtc::scoped_refptr<AudioMixer> audio_mixer; 34 35 // The audio processing module. 36 rtc::scoped_refptr<webrtc::AudioProcessing> audio_processing; 37 38 // TODO(solenberg): Temporary: audio device module. 39 rtc::scoped_refptr<webrtc::AudioDeviceModule> audio_device_module; 40 }; 41 42 virtual AudioProcessing* audio_processing() = 0; 43 virtual AudioTransport* audio_transport() = 0; 44 45 // Enable/disable playout of the audio channels. Enabled by default. 46 // This will stop playout of the underlying audio device but start a task 47 // which will poll for audio data every 10ms to ensure that audio processing 48 // happens and the audio stats are updated. 49 virtual void SetPlayout(bool enabled) = 0; 50 51 // Enable/disable recording of the audio channels. Enabled by default. 52 // This will stop recording of the underlying audio device and no audio 53 // packets will be encoded or transmitted. 54 virtual void SetRecording(bool enabled) = 0; 55 56 virtual void SetStereoChannelSwapping(bool enable) = 0; 57 58 static rtc::scoped_refptr<AudioState> Create( 59 const AudioState::Config& config); 60 ~AudioState()61 ~AudioState() override {} 62 }; 63 } // namespace webrtc 64 65 #endif // CALL_AUDIO_STATE_H_ 66