/* * Copyright (c) 2021 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_CLIPPING_PREDICTOR_H_ #define MODULES_AUDIO_PROCESSING_AGC2_CLIPPING_PREDICTOR_H_ #include <memory> #include <vector> #include "absl/types/optional.h" #include "api/audio/audio_processing.h" #include "modules/audio_processing/include/audio_frame_view.h" namespace webrtc { // Frame-wise clipping prediction and clipped level step estimation. Analyzes // 10 ms multi-channel frames and estimates an analog mic level decrease step // to possibly avoid clipping when predicted. `Analyze()` and // `EstimateClippedLevelStep()` can be called in any order. class ClippingPredictor { … }; // Creates a ClippingPredictor based on the provided `config`. When enabled, // the following must hold for `config`: // `window_length < reference_window_length + reference_window_delay`. // Returns `nullptr` if `config.enabled` is false. std::unique_ptr<ClippingPredictor> CreateClippingPredictor( int num_channels, const AudioProcessing::Config::GainController1::AnalogGainController:: ClippingPredictor& config); } // namespace webrtc #endif // MODULES_AUDIO_PROCESSING_AGC2_CLIPPING_PREDICTOR_H_