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This CL adds functionality to use the shadow filter output instead of the main filter output for cases when the former is better than the latter. One case when that happens is when there have been an echo path change, either in the acoustic path, in the audio buffers or due to some active audio processing effects being applied on the device. The CL causes less echo leaks, in particular on devices with active render processing. Bug: webrtc:9581,chromium:869821 Change-Id: Icb8df1b94141598da82dc188051ac59e43338938 Reviewed-on: https://webrtc-review.googlesource.com/91820 Reviewed-by: Sam Zackrisson <saza@webrtc.org> Commit-Queue: Per Åhgren <peah@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24166}
49 lines
1.4 KiB
C++
49 lines
1.4 KiB
C++
/*
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* Copyright (c) 2017 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_SUBTRACTOR_OUTPUT_H_
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#define MODULES_AUDIO_PROCESSING_AEC3_SUBTRACTOR_OUTPUT_H_
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#include <array>
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#include "api/array_view.h"
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#include "modules/audio_processing/aec3/aec3_common.h"
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#include "modules/audio_processing/aec3/fft_data.h"
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namespace webrtc {
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// Stores the values being returned from the echo subtractor.
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struct SubtractorOutput {
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SubtractorOutput();
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~SubtractorOutput();
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std::array<float, kBlockSize> s_main;
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std::array<float, kBlockSize> s_shadow;
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std::array<float, kBlockSize> e_main;
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std::array<float, kBlockSize> e_shadow;
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FftData E_main;
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std::array<float, kFftLengthBy2Plus1> E2_main;
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std::array<float, kFftLengthBy2Plus1> E2_shadow;
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float s2_main = 0.f;
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float s2_shadow = 0.f;
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float e2_main = 0.f;
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float e2_shadow = 0.f;
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float y2 = 0.f;
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// Reset the struct content.
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void Reset();
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// Updates the powers of the signals.
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void UpdatePowers(rtc::ArrayView<const float> y);
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};
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} // namespace webrtc
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#endif // MODULES_AUDIO_PROCESSING_AEC3_SUBTRACTOR_OUTPUT_H_
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