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0cbb58e046
This is a reland of 87a7b82520
Original change's description:
> Refactoring of the noise suppressor and adding true multichannel support
>
> This CL adds proper multichannel support to the noise suppressor.
> To accomplish that in a safe way, a full refactoring of the noise
> suppressor code has been done.
>
> Due to floating point precision, the changes made are not entirely
> bitexact. They are, however, very close to being bitexact.
>
> As a safety measure, the former noise suppressor code is preserved
> and a kill-switch is added to allow revering to the legacy noise
> suppressor in case issues arise.
>
> Bug: webrtc:10895, b/143344262
> Change-Id: I0b071011b23265ac12e6d4b3956499d122286657
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/158407
> Commit-Queue: Per Åhgren <peah@webrtc.org>
> Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#29646}
Bug: webrtc:10895, b/143344262
Change-Id: I236f1e67bb0baa4e30908a4cf7a8a7bb55fbced3
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/158747
Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
Commit-Queue: Per Åhgren <peah@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29663}
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
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* Copyright (c) 2012 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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#include "modules/audio_processing/legacy_ns/noise_suppression.h"
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#include <stdlib.h>
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#include <string.h>
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#include "common_audio/signal_processing/include/signal_processing_library.h"
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#include "modules/audio_processing/legacy_ns/defines.h"
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#include "modules/audio_processing/legacy_ns/ns_core.h"
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NsHandle* WebRtcNs_Create() {
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NoiseSuppressionC* self = malloc(sizeof(NoiseSuppressionC));
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self->initFlag = 0;
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return (NsHandle*)self;
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}
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void WebRtcNs_Free(NsHandle* NS_inst) {
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free(NS_inst);
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}
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int WebRtcNs_Init(NsHandle* NS_inst, uint32_t fs) {
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return WebRtcNs_InitCore((NoiseSuppressionC*)NS_inst, fs);
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}
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int WebRtcNs_set_policy(NsHandle* NS_inst, int mode) {
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return WebRtcNs_set_policy_core((NoiseSuppressionC*)NS_inst, mode);
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}
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void WebRtcNs_Analyze(NsHandle* NS_inst, const float* spframe) {
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WebRtcNs_AnalyzeCore((NoiseSuppressionC*)NS_inst, spframe);
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}
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void WebRtcNs_Process(NsHandle* NS_inst,
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const float* const* spframe,
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size_t num_bands,
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float* const* outframe) {
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WebRtcNs_ProcessCore((NoiseSuppressionC*)NS_inst, spframe, num_bands,
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outframe);
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}
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float WebRtcNs_prior_speech_probability(NsHandle* handle) {
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NoiseSuppressionC* self = (NoiseSuppressionC*)handle;
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if (handle == NULL) {
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return -1;
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}
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if (self->initFlag == 0) {
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return -1;
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}
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return self->priorSpeechProb;
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}
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const float* WebRtcNs_noise_estimate(const NsHandle* handle) {
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const NoiseSuppressionC* self = (const NoiseSuppressionC*)handle;
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if (handle == NULL || self->initFlag == 0) {
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return NULL;
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}
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return self->noise;
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}
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size_t WebRtcNs_num_freq() {
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return HALF_ANAL_BLOCKL;
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}
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