webrtc/modules/audio_processing/voice_detection_impl.h

/*
 *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_VOICE_DETECTION_IMPL_H_
#define WEBRTC_MODULES_AUDIO_PROCESSING_VOICE_DETECTION_IMPL_H_

#include "webrtc/base/criticalsection.h"
#include "webrtc/modules/audio_processing/include/audio_processing.h"
#include "webrtc/modules/audio_processing/processing_component.h"

namespace webrtc {

class AudioBuffer;

class VoiceDetectionImpl : public VoiceDetection,
                           public ProcessingComponent {
 public:
  VoiceDetectionImpl(const AudioProcessing* apm, rtc::CriticalSection* crit);
  virtual ~VoiceDetectionImpl();

  int ProcessCaptureAudio(AudioBuffer* audio);

  // VoiceDetection implementation.
  bool is_enabled() const override;

  // ProcessingComponent implementation.
  int Initialize() override;

 private:
  // VoiceDetection implementation.
  int Enable(bool enable) override;
  int set_stream_has_voice(bool has_voice) override;
  bool stream_has_voice() const override;
  int set_likelihood(Likelihood likelihood) override;
  Likelihood likelihood() const override;
  int set_frame_size_ms(int size) override;
  int frame_size_ms() const override;

  // ProcessingComponent implementation.
  void* CreateHandle() const override;
  int InitializeHandle(void* handle) const override;
  int ConfigureHandle(void* handle) const override;
  void DestroyHandle(void* handle) const override;
  int num_handles_required() const override;
  int GetHandleError(void* handle) const override;

  // Not guarded as its public API is thread safe.
  const AudioProcessing* apm_;

  rtc::CriticalSection* const crit_;

  bool stream_has_voice_ GUARDED_BY(crit_);
  bool using_external_vad_ GUARDED_BY(crit_);
  Likelihood likelihood_ GUARDED_BY(crit_);
  int frame_size_ms_ GUARDED_BY(crit_);
  size_t frame_size_samples_ GUARDED_BY(crit_);
};
}  // namespace webrtc

#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_VOICE_DETECTION_IMPL_H_