nearend_detector.h (1383B)
1 /* 2 * Copyright (c) 2019 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_AEC3_NEAREND_DETECTOR_H_ 12 #define MODULES_AUDIO_PROCESSING_AEC3_NEAREND_DETECTOR_H_ 13 14 #include <array> 15 16 #include "api/array_view.h" 17 #include "modules/audio_processing/aec3/aec3_common.h" 18 19 namespace webrtc { 20 // Class for selecting whether the suppressor is in the nearend or echo state. 21 class NearendDetector { 22 public: 23 virtual ~NearendDetector() {} 24 25 // Returns whether the current state is the nearend state. 26 virtual bool IsNearendState() const = 0; 27 28 // Updates the state selection based on latest spectral estimates. 29 virtual void Update( 30 ArrayView<const std::array<float, kFftLengthBy2Plus1>> nearend_spectrum, 31 ArrayView<const std::array<float, kFftLengthBy2Plus1>> 32 residual_echo_spectrum, 33 ArrayView<const std::array<float, kFftLengthBy2Plus1>> 34 comfort_noise_spectrum, 35 bool initial_state) = 0; 36 }; 37 38 } // namespace webrtc 39 40 #endif // MODULES_AUDIO_PROCESSING_AEC3_NEAREND_DETECTOR_H_