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/*
* 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_HIGH_PASS_FILTER_H_
#define MODULES_AUDIO_PROCESSING_HIGH_PASS_FILTER_H_
#include <memory>
#include <vector>
#include "api/array_view.h"
#include "modules/audio_processing/utility/cascaded_biquad_filter.h"
namespace webrtc {
class AudioBuffer;
class HighPassFilter {
public:
HighPassFilter(int sample_rate_hz, size_t num_channels);
~HighPassFilter();
HighPassFilter(const HighPassFilter&) = delete;
HighPassFilter& operator=(const HighPassFilter&) = delete;
void Process(AudioBuffer* audio, bool use_split_band_data);
void Process(std::vector<std::vector<float>>* audio);
void Reset();
void Reset(size_t num_channels);
int sample_rate_hz() const { return sample_rate_hz_; }
size_t num_channels() const { return filters_.size(); }
private:
const int sample_rate_hz_;
std::vector<std::unique_ptr<CascadedBiQuadFilter>> filters_;
};
} // namespace webrtc
#endif // MODULES_AUDIO_PROCESSING_HIGH_PASS_FILTER_H_
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