56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
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/*
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* Copyright (c) 2019 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_NS_HISTOGRAMS_H_
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#define MODULES_AUDIO_PROCESSING_NS_HISTOGRAMS_H_
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#include <array>
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#include "api/array_view.h"
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#include "modules/audio_processing/ns/ns_common.h"
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#include "modules/audio_processing/ns/signal_model.h"
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namespace webrtc {
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constexpr int kHistogramSize = 1000;
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// Class for handling the updating of histograms.
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class Histograms {
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public:
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Histograms();
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Histograms(const Histograms&) = delete;
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Histograms& operator=(const Histograms&) = delete;
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// Clears the histograms.
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void Clear();
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// Extracts thresholds for feature parameters and updates the corresponding
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// histogram.
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void Update(const SignalModel& features_);
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// Methods for accessing the histograms.
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rtc::ArrayView<const int, kHistogramSize> get_lrt() const { return lrt_; }
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rtc::ArrayView<const int, kHistogramSize> get_spectral_flatness() const {
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return spectral_flatness_;
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}
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rtc::ArrayView<const int, kHistogramSize> get_spectral_diff() const {
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return spectral_diff_;
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}
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private:
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std::array<int, kHistogramSize> lrt_;
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std::array<int, kHistogramSize> spectral_flatness_;
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std::array<int, kHistogramSize> spectral_diff_;
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};
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} // namespace webrtc
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#endif // MODULES_AUDIO_PROCESSING_NS_HISTOGRAMS_H_
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