chromium/third_party/webrtc/modules/audio_processing/utility/cascaded_biquad_filter.cc

/*
 *  Copyright (c) 2016 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.
 */
#include "modules/audio_processing/utility/cascaded_biquad_filter.h"

#include <algorithm>

#include "rtc_base/checks.h"

namespace webrtc {

CascadedBiQuadFilter::BiQuadParam::BiQuadParam(std::complex<float> zero,
                                               std::complex<float> pole,
                                               float gain,
                                               bool mirror_zero_along_i_axis)
    : … { … }

CascadedBiQuadFilter::BiQuadParam::BiQuadParam(const BiQuadParam&) = default;

CascadedBiQuadFilter::BiQuad::BiQuad(
    const CascadedBiQuadFilter::BiQuadParam& param)
    : … { … }

void CascadedBiQuadFilter::BiQuad::BiQuad::Reset() { … }

CascadedBiQuadFilter::CascadedBiQuadFilter(
    const CascadedBiQuadFilter::BiQuadCoefficients& coefficients,
    size_t num_biquads)
    : … { … }

CascadedBiQuadFilter::CascadedBiQuadFilter(
    const std::vector<CascadedBiQuadFilter::BiQuadParam>& biquad_params) { … }

CascadedBiQuadFilter::~CascadedBiQuadFilter() = default;

void CascadedBiQuadFilter::Process(rtc::ArrayView<const float> x,
                                   rtc::ArrayView<float> y) { … }

void CascadedBiQuadFilter::Process(rtc::ArrayView<float> y) { … }

void CascadedBiQuadFilter::Reset() { … }

void CascadedBiQuadFilter::ApplyBiQuad(rtc::ArrayView<const float> x,
                                       rtc::ArrayView<float> y,
                                       CascadedBiQuadFilter::BiQuad* biquad) { … }

}  // namespace webrtc