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/*
* Copyright (c) 2017 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_AEC3_SUPPRESSION_FILTER_H_
#define MODULES_AUDIO_PROCESSING_AEC3_SUPPRESSION_FILTER_H_
#include <array>
#include <vector>
#include "modules/audio_processing/aec3/aec3_common.h"
#include "modules/audio_processing/aec3/aec3_fft.h"
#include "modules/audio_processing/aec3/fft_data.h"
namespace webrtc {
class SuppressionFilter {
public:
SuppressionFilter(Aec3Optimization optimization,
int sample_rate_hz,
size_t num_capture_channels_);
~SuppressionFilter();
SuppressionFilter(const SuppressionFilter&) = delete;
SuppressionFilter& operator=(const SuppressionFilter&) = delete;
void ApplyGain(rtc::ArrayView<const FftData> comfort_noise,
rtc::ArrayView<const FftData> comfort_noise_high_bands,
const std::array<float, kFftLengthBy2Plus1>& suppression_gain,
float high_bands_gain,
rtc::ArrayView<const FftData> E_lowest_band,
std::vector<std::vector<std::vector<float>>>* e);
private:
const Aec3Optimization optimization_;
const int sample_rate_hz_;
const size_t num_capture_channels_;
const Aec3Fft fft_;
std::vector<std::vector<std::array<float, kFftLengthBy2>>> e_output_old_;
};
} // namespace webrtc
#endif // MODULES_AUDIO_PROCESSING_AEC3_SUPPRESSION_FILTER_H_
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