bcec8b0b21
This is from the upstream library commit id 3326535126e435f1ba647885ce43a8f0f3d317eb, corresponding to Chromium 88.0.4290.1.
73 lines
2.0 KiB
C
73 lines
2.0 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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