chromium/third_party/webrtc/modules/audio_processing/aec3/subband_erle_estimator.cc

/*
 *  Copyright (c) 2018 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/aec3/subband_erle_estimator.h"

#include <algorithm>
#include <functional>

#include "rtc_base/checks.h"
#include "rtc_base/numerics/safe_minmax.h"
#include "system_wrappers/include/field_trial.h"

namespace webrtc {

namespace {

constexpr float kX2BandEnergyThreshold = …;
constexpr int kBlocksToHoldErle = …;
constexpr int kBlocksForOnsetDetection = …;
constexpr int kPointsToAccumulate = …;

std::array<float, kFftLengthBy2Plus1> SetMaxErleBands(float max_erle_l,
                                                      float max_erle_h) { … }

bool EnableMinErleDuringOnsets() { … }

}  // namespace

SubbandErleEstimator::SubbandErleEstimator(const EchoCanceller3Config& config,
                                           size_t num_capture_channels)
    : … { … }

SubbandErleEstimator::~SubbandErleEstimator() = default;

void SubbandErleEstimator::Reset() { … }

void SubbandErleEstimator::Update(
    rtc::ArrayView<const float, kFftLengthBy2Plus1> X2,
    rtc::ArrayView<const std::array<float, kFftLengthBy2Plus1>> Y2,
    rtc::ArrayView<const std::array<float, kFftLengthBy2Plus1>> E2,
    const std::vector<bool>& converged_filters) { … }

void SubbandErleEstimator::Dump(
    const std::unique_ptr<ApmDataDumper>& data_dumper) const { … }

void SubbandErleEstimator::UpdateBands(
    const std::vector<bool>& converged_filters) { … }

void SubbandErleEstimator::DecreaseErlePerBandForLowRenderSignals() { … }

void SubbandErleEstimator::ResetAccumulatedSpectra() { … }

void SubbandErleEstimator::UpdateAccumulatedSpectra(
    rtc::ArrayView<const float, kFftLengthBy2Plus1> X2,
    rtc::ArrayView<const std::array<float, kFftLengthBy2Plus1>> Y2,
    rtc::ArrayView<const std::array<float, kFftLengthBy2Plus1>> E2,
    const std::vector<bool>& converged_filters) { … }

}  // namespace webrtc