tor-browser

The Tor Browser
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audio_state.h (2302B)

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