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7ba22b8eea
The audio processing code is using parts of the iSAC codec to do voice activity detection (VAD), but it's undesirable for it to pull in the entire iSAC codec as a dependency. So this CL factors out the parts of iSAC that's needed for VAD to a separate build target. Bug: webrtc:8396 Change-Id: I884e25d8fd0bc815fca664352b0573b4b173880e Reviewed-on: https://webrtc-review.googlesource.com/69640 Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org> Commit-Queue: Karl Wiberg <kwiberg@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23110}
72 lines
2 KiB
C
72 lines
2 KiB
C
/*
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* Copyright (c) 2011 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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/* encode.c - Encoding function for the iSAC coder */
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#include <math.h>
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#include "modules/audio_coding/codecs/isac/main/source/structs.h"
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#include "modules/audio_coding/codecs/isac/main/source/codec.h"
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#include "modules/audio_coding/codecs/isac/main/source/pitch_estimator.h"
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void WebRtcIsac_InitMasking(MaskFiltstr *maskdata) {
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int k;
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for (k = 0; k < WINLEN; k++) {
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maskdata->DataBufferLo[k] = 0.0;
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maskdata->DataBufferHi[k] = 0.0;
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}
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for (k = 0; k < ORDERLO+1; k++) {
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maskdata->CorrBufLo[k] = 0.0;
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maskdata->PreStateLoF[k] = 0.0;
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maskdata->PreStateLoG[k] = 0.0;
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maskdata->PostStateLoF[k] = 0.0;
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maskdata->PostStateLoG[k] = 0.0;
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}
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for (k = 0; k < ORDERHI+1; k++) {
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maskdata->CorrBufHi[k] = 0.0;
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maskdata->PreStateHiF[k] = 0.0;
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maskdata->PreStateHiG[k] = 0.0;
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maskdata->PostStateHiF[k] = 0.0;
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maskdata->PostStateHiG[k] = 0.0;
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}
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maskdata->OldEnergy = 10.0;
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return;
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}
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void WebRtcIsac_InitPostFilterbank(PostFiltBankstr *postfiltdata)
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{
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int k;
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for (k = 0; k < 2*POSTQORDER; k++) {
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postfiltdata->STATE_0_LOWER[k] = 0;
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postfiltdata->STATE_0_UPPER[k] = 0;
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postfiltdata->STATE_0_LOWER_float[k] = 0;
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postfiltdata->STATE_0_UPPER_float[k] = 0;
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}
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/* High pass filter states */
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postfiltdata->HPstates1[0] = 0.0;
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postfiltdata->HPstates1[1] = 0.0;
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postfiltdata->HPstates2[0] = 0.0;
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postfiltdata->HPstates2[1] = 0.0;
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postfiltdata->HPstates1_float[0] = 0.0f;
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postfiltdata->HPstates1_float[1] = 0.0f;
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postfiltdata->HPstates2_float[0] = 0.0f;
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postfiltdata->HPstates2_float[1] = 0.0f;
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return;
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}
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