Revert "Pull the Voice Activity Detector out from the AGC"

webrtc/modules/audio_processing/vad/voice_activity_detector.h

-/*
- *  Copyright (c) 2015 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_VAD_VOICE_ACTIVITY_DETECTOR_H_
-#define WEBRTC_MODULES_AUDIO_PROCESSING_VAD_VOICE_ACTIVITY_DETECTOR_H_
-
-#include <vector>
-
-#include "webrtc/base/scoped_ptr.h"
-#include "webrtc/common_audio/resampler/include/resampler.h"
-#include "webrtc/modules/audio_processing/vad/vad_audio_proc.h"
-#include "webrtc/modules/audio_processing/vad/common.h"
-#include "webrtc/modules/audio_processing/vad/pitch_based_vad.h"
-#include "webrtc/modules/audio_processing/vad/standalone_vad.h"
-
-namespace webrtc {
-
-// A Voice Activity Detector (VAD) that combines the voice probability from the
-// StandaloneVad and PitchBasedVad to get a more robust estimation.
-class VoiceActivityDetector {
- public:
-  VoiceActivityDetector();
-
-  // Processes each audio chunk and estimates the voice probability. The maximum
-  // supported sample rate is 32kHz.
-  // TODO(aluebs): Change |length| to size_t.
-  void ProcessChunk(const int16_t* audio, int length, int sample_rate_hz);
-
-  // Returns a vector of voice probabilities for each chunk. It can be empty for
-  // some chunks, but it catches up afterwards returning multiple values at
-  // once.
-  const std::vector<double>& chunkwise_voice_probabilities() const {
-    return chunkwise_voice_probabilities_;
-  }
-
-  // Returns a vector of RMS values for each chunk. It has the same length as
-  // chunkwise_voice_probabilities().
-  const std::vector<double>& chunkwise_rms() const { return chunkwise_rms_; }
-
-  // Returns the last voice probability, regardless of the internal
-  // implementation, although it has a few chunks of delay.
-  float last_voice_probability() const { return last_voice_probability_; }
-
- private:
-  // TODO(aluebs): Change these to float.
-  std::vector<double> chunkwise_voice_probabilities_;
-  std::vector<double> chunkwise_rms_;
-
-  float last_voice_probability_;
-
-  Resampler resampler_;
-  VadAudioProc audio_processing_;
-
-  rtc::scoped_ptr<StandaloneVad> standalone_vad_;
-  PitchBasedVad pitch_based_vad_;
-
-  int16_t resampled_[kLength10Ms];
-  AudioFeatures features_;
-};
-
-}  // namespace webrtc
-
-#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_VAD_VOICE_ACTIVITY_DETECTOR_H_