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/*
* Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ISAC_VAD_H_
#define MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ISAC_VAD_H_
#include <stddef.h>
#include "modules/audio_coding/codecs/isac/main/source/structs.h"
void WebRtcIsac_InitPitchFilter(PitchFiltstr* pitchfiltdata);
void WebRtcIsac_InitPitchAnalysis(PitchAnalysisStruct* state);
void WebRtcIsac_InitPreFilterbank(PreFiltBankstr* prefiltdata);
double WebRtcIsac_LevDurb(double* a, double* k, double* r, size_t order);
/* The number of all-pass filter factors in an upper or lower channel*/
#define NUMBEROFCHANNELAPSECTIONS 2
/* The upper channel all-pass filter factors */
extern const float WebRtcIsac_kUpperApFactorsFloat[2];
/* The lower channel all-pass filter factors */
extern const float WebRtcIsac_kLowerApFactorsFloat[2];
void WebRtcIsac_AllPassFilter2Float(float* InOut,
const float* APSectionFactors,
int lengthInOut,
int NumberOfSections,
float* FilterState);
void WebRtcIsac_SplitAndFilterFloat(float* in,
float* LP,
float* HP,
double* LP_la,
double* HP_la,
PreFiltBankstr* prefiltdata);
#endif // MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_ISAC_VAD_H_
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