1 /* 2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef MODULES_AUDIO_PROCESSING_AGC2_NOISE_SPECTRUM_ESTIMATOR_H_ 12 #define MODULES_AUDIO_PROCESSING_AGC2_NOISE_SPECTRUM_ESTIMATOR_H_ 13 14 #include "api/array_view.h" 15 #include "rtc_base/constructor_magic.h" 16 17 namespace webrtc { 18 19 class ApmDataDumper; 20 21 class NoiseSpectrumEstimator { 22 public: 23 explicit NoiseSpectrumEstimator(ApmDataDumper* data_dumper); 24 void Initialize(); 25 void Update(rtc::ArrayView<const float> spectrum, bool first_update); 26 GetNoiseSpectrum()27 rtc::ArrayView<const float> GetNoiseSpectrum() const { 28 return rtc::ArrayView<const float>(noise_spectrum_); 29 } 30 31 private: 32 ApmDataDumper* data_dumper_; 33 float noise_spectrum_[65]; 34 35 RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(NoiseSpectrumEstimator); 36 }; 37 38 } // namespace webrtc 39 40 #endif // MODULES_AUDIO_PROCESSING_AGC2_NOISE_SPECTRUM_ESTIMATOR_H_ 41