modules/audio_coding/codecs/isac/main/source/lpc_analysis.h

/*
 *  Copyright (c) 2011 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.
 */

/*
 * lpc_analysis.h
 *
 * LPC functions
 *
 */

#ifndef MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_ANALYSIS_H_
#define MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_ANALYSIS_H_

#include "modules/audio_coding/codecs/isac/main/source/settings.h"
#include "modules/audio_coding/codecs/isac/main/source/structs.h"

void WebRtcIsac_GetLpcCoefLb(double* inLo,
                             double* inHi,
                             MaskFiltstr* maskdata,
                             double signal_noise_ratio,
                             const int16_t* pitchGains_Q12,
                             double* lo_coeff,
                             double* hi_coeff);

void WebRtcIsac_GetLpcGain(double signal_noise_ratio,
                           const double* filtCoeffVecs,
                           int numVecs,
                           double* gain,
                           double corrLo[][UB_LPC_ORDER + 1],
                           const double* varscale);

void WebRtcIsac_GetLpcCoefUb(double* inSignal,
                             MaskFiltstr* maskdata,
                             double* lpCoeff,
                             double corr[][UB_LPC_ORDER + 1],
                             double* varscale,
                             int16_t bandwidth);

#endif /* MODULES_AUDIO_CODING_CODECS_ISAC_MAIN_SOURCE_LPC_ANALYIS_H_ */