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/*
* 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/reverb_model_estimator.h"
namespace webrtc {
ReverbModelEstimator::ReverbModelEstimator(const EchoCanceller3Config& config,
size_t num_capture_channels)
: reverb_decay_estimators_(num_capture_channels),
reverb_frequency_responses_(
num_capture_channels,
ReverbFrequencyResponse(
config.ep_strength.use_conservative_tail_frequency_response)) {
for (size_t ch = 0; ch < reverb_decay_estimators_.size(); ++ch) {
reverb_decay_estimators_[ch] =
std::make_unique<ReverbDecayEstimator>(config);
}
}
ReverbModelEstimator::~ReverbModelEstimator() = default;
void ReverbModelEstimator::Update(
rtc::ArrayView<const std::vector<float>> impulse_responses,
rtc::ArrayView<const std::vector<std::array<float, kFftLengthBy2Plus1>>>
frequency_responses,
rtc::ArrayView<const absl::optional<float>> linear_filter_qualities,
rtc::ArrayView<const int> filter_delays_blocks,
const std::vector<bool>& usable_linear_estimates,
bool stationary_block) {
const size_t num_capture_channels = reverb_decay_estimators_.size();
RTC_DCHECK_EQ(num_capture_channels, impulse_responses.size());
RTC_DCHECK_EQ(num_capture_channels, frequency_responses.size());
RTC_DCHECK_EQ(num_capture_channels, usable_linear_estimates.size());
for (size_t ch = 0; ch < num_capture_channels; ++ch) {
// Estimate the frequency response for the reverb.
reverb_frequency_responses_[ch].Update(
frequency_responses[ch], filter_delays_blocks[ch],
linear_filter_qualities[ch], stationary_block);
// Estimate the reverb decay,
reverb_decay_estimators_[ch]->Update(
impulse_responses[ch], linear_filter_qualities[ch],
filter_delays_blocks[ch], usable_linear_estimates[ch],
stationary_block);
}
}
} // namespace webrtc
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