90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
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/*
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* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "modules/audio_processing/aec3/erle_estimator.h"
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#include "modules/audio_processing/aec3/aec3_common.h"
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#include "rtc_base/checks.h"
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namespace webrtc {
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ErleEstimator::ErleEstimator(size_t startup_phase_length_blocks,
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const EchoCanceller3Config& config,
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size_t num_capture_channels)
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: startup_phase_length_blocks_(startup_phase_length_blocks),
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fullband_erle_estimator_(config.erle, num_capture_channels),
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subband_erle_estimator_(config, num_capture_channels) {
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if (config.erle.num_sections > 1) {
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signal_dependent_erle_estimator_ =
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std::make_unique<SignalDependentErleEstimator>(config,
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num_capture_channels);
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}
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Reset(true);
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}
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ErleEstimator::~ErleEstimator() = default;
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void ErleEstimator::Reset(bool delay_change) {
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fullband_erle_estimator_.Reset();
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subband_erle_estimator_.Reset();
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if (signal_dependent_erle_estimator_) {
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signal_dependent_erle_estimator_->Reset();
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}
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if (delay_change) {
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blocks_since_reset_ = 0;
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}
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}
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void ErleEstimator::Update(
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const RenderBuffer& render_buffer,
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rtc::ArrayView<const std::vector<std::array<float, kFftLengthBy2Plus1>>>
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filter_frequency_responses,
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rtc::ArrayView<const float, kFftLengthBy2Plus1>
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avg_render_spectrum_with_reverb,
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rtc::ArrayView<const std::array<float, kFftLengthBy2Plus1>> capture_spectra,
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rtc::ArrayView<const std::array<float, kFftLengthBy2Plus1>>
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subtractor_spectra,
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const std::vector<bool>& converged_filters) {
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RTC_DCHECK_EQ(subband_erle_estimator_.Erle(/*onset_compensated=*/true).size(),
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capture_spectra.size());
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RTC_DCHECK_EQ(subband_erle_estimator_.Erle(/*onset_compensated=*/true).size(),
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subtractor_spectra.size());
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const auto& X2_reverb = avg_render_spectrum_with_reverb;
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const auto& Y2 = capture_spectra;
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const auto& E2 = subtractor_spectra;
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if (++blocks_since_reset_ < startup_phase_length_blocks_) {
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return;
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}
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subband_erle_estimator_.Update(X2_reverb, Y2, E2, converged_filters);
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if (signal_dependent_erle_estimator_) {
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signal_dependent_erle_estimator_->Update(
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render_buffer, filter_frequency_responses, X2_reverb, Y2, E2,
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subband_erle_estimator_.Erle(/*onset_compensated=*/false),
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subband_erle_estimator_.Erle(/*onset_compensated=*/true),
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converged_filters);
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}
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fullband_erle_estimator_.Update(X2_reverb, Y2, E2, converged_filters);
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}
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void ErleEstimator::Dump(
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const std::unique_ptr<ApmDataDumper>& data_dumper) const {
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fullband_erle_estimator_.Dump(data_dumper);
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subband_erle_estimator_.Dump(data_dumper);
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if (signal_dependent_erle_estimator_) {
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signal_dependent_erle_estimator_->Dump(data_dumper);
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}
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}
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} // namespace webrtc
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