43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
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/*
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* Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_AUDIO_PROCESSING_AEC3_NEAREND_DETECTOR_H_
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#define MODULES_AUDIO_PROCESSING_AEC3_NEAREND_DETECTOR_H_
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#include <vector>
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#include "api/array_view.h"
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#include "api/audio/echo_canceller3_config.h"
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#include "modules/audio_processing/aec3/aec3_common.h"
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namespace webrtc {
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// Class for selecting whether the suppressor is in the nearend or echo state.
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class NearendDetector {
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public:
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virtual ~NearendDetector() {}
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// Returns whether the current state is the nearend state.
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virtual bool IsNearendState() const = 0;
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// Updates the state selection based on latest spectral estimates.
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virtual void Update(
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rtc::ArrayView<const std::array<float, kFftLengthBy2Plus1>>
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nearend_spectrum,
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rtc::ArrayView<const std::array<float, kFftLengthBy2Plus1>>
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residual_echo_spectrum,
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rtc::ArrayView<const std::array<float, kFftLengthBy2Plus1>>
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comfort_noise_spectrum,
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bool initial_state) = 0;
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};
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} // namespace webrtc
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#endif // MODULES_AUDIO_PROCESSING_AEC3_NEAREND_DETECTOR_H_
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