modules/audio_processing/low_cut_filter.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 MODULES_AUDIO_PROCESSING_LOW_CUT_FILTER_H_
#define MODULES_AUDIO_PROCESSING_LOW_CUT_FILTER_H_

#include <memory>
#include <vector>

#include "rtc_base/constructor_magic.h"

namespace webrtc {

class AudioBuffer;

class LowCutFilter {
 public:
  LowCutFilter(size_t channels, int sample_rate_hz);
  ~LowCutFilter();
  void Process(AudioBuffer* audio);

 private:
  class BiquadFilter;
  std::vector<std::unique_ptr<BiquadFilter>> filters_;
  RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(LowCutFilter);
};
}  // namespace webrtc

#endif  // MODULES_AUDIO_PROCESSING_LOW_CUT_FILTER_H_