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Diffstat (limited to 'third_party/libwebrtc/modules/audio_processing/aec3/echo_remover_metrics.h')
-rw-r--r-- | third_party/libwebrtc/modules/audio_processing/aec3/echo_remover_metrics.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_processing/aec3/echo_remover_metrics.h b/third_party/libwebrtc/modules/audio_processing/aec3/echo_remover_metrics.h new file mode 100644 index 0000000000..aec8084d78 --- /dev/null +++ b/third_party/libwebrtc/modules/audio_processing/aec3/echo_remover_metrics.h @@ -0,0 +1,78 @@ +/* + * 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_REMOVER_METRICS_H_ +#define MODULES_AUDIO_PROCESSING_AEC3_ECHO_REMOVER_METRICS_H_ + +#include <array> + +#include "modules/audio_processing/aec3/aec3_common.h" +#include "modules/audio_processing/aec3/aec_state.h" + +namespace webrtc { + +// Handles the reporting of metrics for the echo remover. +class EchoRemoverMetrics { + public: + struct DbMetric { + DbMetric(); + DbMetric(float sum_value, float floor_value, float ceil_value); + void Update(float value); + void UpdateInstant(float value); + float sum_value; + float floor_value; + float ceil_value; + }; + + EchoRemoverMetrics(); + + EchoRemoverMetrics(const EchoRemoverMetrics&) = delete; + EchoRemoverMetrics& operator=(const EchoRemoverMetrics&) = delete; + + // Updates the metric with new data. + void Update( + const AecState& aec_state, + const std::array<float, kFftLengthBy2Plus1>& comfort_noise_spectrum, + const std::array<float, kFftLengthBy2Plus1>& suppressor_gain); + + // Returns true if the metrics have just been reported, otherwise false. + bool MetricsReported() { return metrics_reported_; } + + private: + // Resets the metrics. + void ResetMetrics(); + + int block_counter_ = 0; + DbMetric erl_time_domain_; + DbMetric erle_time_domain_; + bool saturated_capture_ = false; + bool metrics_reported_ = false; +}; + +namespace aec3 { + +// Updates a banded metric of type DbMetric with the values in the supplied +// array. +void UpdateDbMetric(const std::array<float, kFftLengthBy2Plus1>& value, + std::array<EchoRemoverMetrics::DbMetric, 2>* statistic); + +// Transforms a DbMetric from the linear domain into the logarithmic domain. +int TransformDbMetricForReporting(bool negate, + float min_value, + float max_value, + float offset, + float scaling, + float value); + +} // namespace aec3 + +} // namespace webrtc + +#endif // MODULES_AUDIO_PROCESSING_AEC3_ECHO_REMOVER_METRICS_H_ |