mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-17 15:47:53 +01:00
38e2d95bda
This CL refactors the delay estimator in AEC3. Furthermore, it adds: 1. Allow for a customized delay estimator behavior to simplify development. 2. Exposes that behavior to clear configuration settings. 3. Adds logging of the delay range supported by the delay estimator. Bug: webrtc:8519 Change-Id: I1764a090519a78b021b2e7de565c52a6c02c848e Reviewed-on: https://webrtc-review.googlesource.com/21166 Commit-Queue: Per Åhgren <peah@webrtc.org> Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20733}
61 lines
2 KiB
C++
61 lines
2 KiB
C++
/*
|
|
* Copyright (c) 2017 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.
|
|
*/
|
|
|
|
#ifndef MODULES_AUDIO_PROCESSING_AEC3_ECHO_PATH_DELAY_ESTIMATOR_H_
|
|
#define MODULES_AUDIO_PROCESSING_AEC3_ECHO_PATH_DELAY_ESTIMATOR_H_
|
|
|
|
#include <vector>
|
|
|
|
#include "api/optional.h"
|
|
#include "modules/audio_processing/aec3/decimator.h"
|
|
#include "modules/audio_processing/aec3/downsampled_render_buffer.h"
|
|
#include "modules/audio_processing/aec3/matched_filter.h"
|
|
#include "modules/audio_processing/aec3/matched_filter_lag_aggregator.h"
|
|
#include "modules/audio_processing/include/audio_processing.h"
|
|
#include "rtc_base/constructormagic.h"
|
|
|
|
namespace webrtc {
|
|
|
|
class ApmDataDumper;
|
|
|
|
// Estimates the delay of the echo path.
|
|
class EchoPathDelayEstimator {
|
|
public:
|
|
EchoPathDelayEstimator(ApmDataDumper* data_dumper,
|
|
const EchoCanceller3Config& config);
|
|
~EchoPathDelayEstimator();
|
|
|
|
// Resets the estimation.
|
|
void Reset();
|
|
|
|
// Produce a delay estimate if such is avaliable.
|
|
rtc::Optional<size_t> EstimateDelay(
|
|
const DownsampledRenderBuffer& render_buffer,
|
|
rtc::ArrayView<const float> capture);
|
|
|
|
// Log delay estimator properties.
|
|
void LogDelayEstimationProperties(int sample_rate_hz, size_t shift) const {
|
|
matched_filter_.LogFilterProperties(sample_rate_hz, shift,
|
|
down_sampling_factor_);
|
|
}
|
|
|
|
private:
|
|
ApmDataDumper* const data_dumper_;
|
|
const size_t down_sampling_factor_;
|
|
const size_t sub_block_size_;
|
|
Decimator capture_decimator_;
|
|
MatchedFilter matched_filter_;
|
|
MatchedFilterLagAggregator matched_filter_lag_aggregator_;
|
|
|
|
RTC_DISALLOW_COPY_AND_ASSIGN(EchoPathDelayEstimator);
|
|
};
|
|
} // namespace webrtc
|
|
|
|
#endif // MODULES_AUDIO_PROCESSING_AEC3_ECHO_PATH_DELAY_ESTIMATOR_H_
|