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d3ead1a942
This change adds a Block class to reduce the need for std::vector<std::vector<std::vector<float>>>. This make the code easier to read and less error prone. It also enables future changes to the underlying data structure of a block. For instance, the data of all bands and channels could be stored in a single vector. The change has been verified to be bit-exact. Bug: webrtc:14089 Change-Id: Ied9a78124c0bbafe0e912017aef91f7c311de2ae Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/262252 Reviewed-by: Per Åhgren <peah@webrtc.org> Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org> Cr-Commit-Position: refs/heads/main@{#36968}
80 lines
2.9 KiB
C++
80 lines
2.9 KiB
C++
/*
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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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#ifndef MODULES_AUDIO_PROCESSING_AEC3_ECHO_PATH_DELAY_ESTIMATOR_H_
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#define MODULES_AUDIO_PROCESSING_AEC3_ECHO_PATH_DELAY_ESTIMATOR_H_
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#include <stddef.h>
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#include "absl/types/optional.h"
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#include "api/array_view.h"
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#include "modules/audio_processing/aec3/alignment_mixer.h"
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#include "modules/audio_processing/aec3/block.h"
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#include "modules/audio_processing/aec3/clockdrift_detector.h"
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#include "modules/audio_processing/aec3/decimator.h"
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#include "modules/audio_processing/aec3/delay_estimate.h"
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#include "modules/audio_processing/aec3/matched_filter.h"
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#include "modules/audio_processing/aec3/matched_filter_lag_aggregator.h"
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namespace webrtc {
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class ApmDataDumper;
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struct DownsampledRenderBuffer;
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struct EchoCanceller3Config;
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// Estimates the delay of the echo path.
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class EchoPathDelayEstimator {
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public:
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EchoPathDelayEstimator(ApmDataDumper* data_dumper,
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const EchoCanceller3Config& config,
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size_t num_capture_channels);
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~EchoPathDelayEstimator();
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EchoPathDelayEstimator(const EchoPathDelayEstimator&) = delete;
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EchoPathDelayEstimator& operator=(const EchoPathDelayEstimator&) = delete;
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// Resets the estimation. If the delay confidence is reset, the reset behavior
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// is as if the call is restarted.
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void Reset(bool reset_delay_confidence);
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// Produce a delay estimate if such is avaliable.
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absl::optional<DelayEstimate> EstimateDelay(
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const DownsampledRenderBuffer& render_buffer,
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const Block& capture);
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// Log delay estimator properties.
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void LogDelayEstimationProperties(int sample_rate_hz, size_t shift) const {
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matched_filter_.LogFilterProperties(sample_rate_hz, shift,
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down_sampling_factor_);
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}
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// Returns the level of detected clockdrift.
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ClockdriftDetector::Level Clockdrift() const {
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return clockdrift_detector_.ClockdriftLevel();
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}
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private:
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ApmDataDumper* const data_dumper_;
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const size_t down_sampling_factor_;
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const size_t sub_block_size_;
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AlignmentMixer capture_mixer_;
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Decimator capture_decimator_;
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MatchedFilter matched_filter_;
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MatchedFilterLagAggregator matched_filter_lag_aggregator_;
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absl::optional<DelayEstimate> old_aggregated_lag_;
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size_t consistent_estimate_counter_ = 0;
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ClockdriftDetector clockdrift_detector_;
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// Internal reset method with more granularity.
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void Reset(bool reset_lag_aggregator, bool reset_delay_confidence);
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};
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} // namespace webrtc
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#endif // MODULES_AUDIO_PROCESSING_AEC3_ECHO_PATH_DELAY_ESTIMATOR_H_
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