c6abf6cd3f
Some API deprecation -- ExperimentalAgc and ExperimentalNs are gone. We're continuing to carry iSAC even though it's gone upstream, but maybe we'll want to drop that soon.
55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
/*
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* Copyright (c) 2018 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_AGC2_RNN_VAD_PITCH_SEARCH_H_
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#define MODULES_AUDIO_PROCESSING_AGC2_RNN_VAD_PITCH_SEARCH_H_
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#include <memory>
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#include <vector>
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#include "api/array_view.h"
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#include "modules/audio_processing/agc2/cpu_features.h"
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#include "modules/audio_processing/agc2/rnn_vad/auto_correlation.h"
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#include "modules/audio_processing/agc2/rnn_vad/common.h"
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#include "modules/audio_processing/agc2/rnn_vad/pitch_search_internal.h"
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#include "rtc_base/gtest_prod_util.h"
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namespace webrtc {
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namespace rnn_vad {
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// Pitch estimator.
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class PitchEstimator {
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public:
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explicit PitchEstimator(const AvailableCpuFeatures& cpu_features);
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PitchEstimator(const PitchEstimator&) = delete;
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PitchEstimator& operator=(const PitchEstimator&) = delete;
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~PitchEstimator();
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// Returns the estimated pitch period at 48 kHz.
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int Estimate(rtc::ArrayView<const float, kBufSize24kHz> pitch_buffer);
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private:
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FRIEND_TEST_ALL_PREFIXES(RnnVadTest, PitchSearchWithinTolerance);
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float GetLastPitchStrengthForTesting() const {
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return last_pitch_48kHz_.strength;
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}
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const AvailableCpuFeatures cpu_features_;
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PitchInfo last_pitch_48kHz_{};
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AutoCorrelationCalculator auto_corr_calculator_;
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std::vector<float> y_energy_24kHz_;
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std::vector<float> pitch_buffer_12kHz_;
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std::vector<float> auto_correlation_12kHz_;
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};
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} // namespace rnn_vad
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} // namespace webrtc
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#endif // MODULES_AUDIO_PROCESSING_AGC2_RNN_VAD_PITCH_SEARCH_H_
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