| /* |
| * 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 <memory> |
| |
| #include "modules/audio_processing/include/audio_frame_view.h" |
| |
| namespace webrtc { |
| class ApmDataDumper; |
| |
| // Noise level estimator interface. |
| class NoiseLevelEstimator { |
| public: |
| virtual ~NoiseLevelEstimator() = default; |
| // Analyzes a 10 ms `frame`, updates the noise level estimation and returns |
| // the value for the latter in dBFS. |
| virtual float Analyze(const AudioFrameView<const float>& frame) = 0; |
| }; |
| |
| // Creates a noise level estimator based on stationarity detection. |
| std::unique_ptr<NoiseLevelEstimator> CreateNoiseLevelEstimator( |
| ApmDataDumper* data_dumper); |
| |
| } // namespace webrtc |
| |
| #endif // MODULES_AUDIO_PROCESSING_AGC2_NOISE_LEVEL_ESTIMATOR_H_ |