79 lines
2.4 KiB
C
79 lines
2.4 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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#ifndef MODULES_AUDIO_PROCESSING_AEC3_ECHO_REMOVER_METRICS_H_
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#define MODULES_AUDIO_PROCESSING_AEC3_ECHO_REMOVER_METRICS_H_
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#include <array>
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#include "modules/audio_processing/aec3/aec3_common.h"
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#include "modules/audio_processing/aec3/aec_state.h"
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namespace webrtc {
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// Handles the reporting of metrics for the echo remover.
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class EchoRemoverMetrics {
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public:
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struct DbMetric {
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DbMetric();
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DbMetric(float sum_value, float floor_value, float ceil_value);
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void Update(float value);
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void UpdateInstant(float value);
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float sum_value;
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float floor_value;
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float ceil_value;
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};
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EchoRemoverMetrics();
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EchoRemoverMetrics(const EchoRemoverMetrics&) = delete;
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EchoRemoverMetrics& operator=(const EchoRemoverMetrics&) = delete;
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// Updates the metric with new data.
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void Update(
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const AecState& aec_state,
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const std::array<float, kFftLengthBy2Plus1>& comfort_noise_spectrum,
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const std::array<float, kFftLengthBy2Plus1>& suppressor_gain);
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// Returns true if the metrics have just been reported, otherwise false.
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bool MetricsReported() { return metrics_reported_; }
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private:
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// Resets the metrics.
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void ResetMetrics();
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int block_counter_ = 0;
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DbMetric erl_time_domain_;
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DbMetric erle_time_domain_;
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bool saturated_capture_ = false;
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bool metrics_reported_ = false;
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};
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namespace aec3 {
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// Updates a banded metric of type DbMetric with the values in the supplied
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// array.
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void UpdateDbMetric(const std::array<float, kFftLengthBy2Plus1>& value,
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std::array<EchoRemoverMetrics::DbMetric, 2>* statistic);
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// Transforms a DbMetric from the linear domain into the logarithmic domain.
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int TransformDbMetricForReporting(bool negate,
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float min_value,
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float max_value,
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float offset,
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float scaling,
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float value);
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} // namespace aec3
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} // namespace webrtc
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#endif // MODULES_AUDIO_PROCESSING_AEC3_ECHO_REMOVER_METRICS_H_
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