bcec8b0b21
This is from the upstream library commit id 3326535126e435f1ba647885ce43a8f0f3d317eb, corresponding to Chromium 88.0.4290.1.
44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
/*
|
|
* Copyright (c) 2016 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_AGC2_NOISE_LEVEL_ESTIMATOR_H_
|
|
#define MODULES_AUDIO_PROCESSING_AGC2_NOISE_LEVEL_ESTIMATOR_H_
|
|
|
|
#include "modules/audio_processing/agc2/signal_classifier.h"
|
|
#include "modules/audio_processing/include/audio_frame_view.h"
|
|
#include "rtc_base/constructor_magic.h"
|
|
|
|
namespace webrtc {
|
|
class ApmDataDumper;
|
|
|
|
class NoiseLevelEstimator {
|
|
public:
|
|
NoiseLevelEstimator(ApmDataDumper* data_dumper);
|
|
~NoiseLevelEstimator();
|
|
// Returns the estimated noise level in dBFS.
|
|
float Analyze(const AudioFrameView<const float>& frame);
|
|
|
|
private:
|
|
void Initialize(int sample_rate_hz);
|
|
|
|
int sample_rate_hz_;
|
|
float min_noise_energy_;
|
|
bool first_update_;
|
|
float noise_energy_;
|
|
int noise_energy_hold_counter_;
|
|
SignalClassifier signal_classifier_;
|
|
|
|
RTC_DISALLOW_COPY_AND_ASSIGN(NoiseLevelEstimator);
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // MODULES_AUDIO_PROCESSING_AGC2_NOISE_LEVEL_ESTIMATOR_H_
|