saf_utility_qmf.h

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/*
 * Copyright 2020 Leo McCormack
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */
 
#ifndef SAF_QMF_H_INCLUDED
#define SAF_QMF_H_INCLUDED
 
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
 
#include "saf_utility_complex.h"
 
typedef enum {
    QMF_BANDS_CH_TIME, 
    QMF_TIME_CH_BANDS  
}QMF_FDDATA_FORMAT;
 
void qmf_create(/* Input Arguments */
                void ** const phQMF,
                int nCHin,
                int nCHout,
                int hopsize,
                int hybridmode,
                QMF_FDDATA_FORMAT format);
 
void qmf_destroy(void ** const phQMF);
 
void qmf_analysis(/* Input Arguments */
                  void * const hQMF,
                  float** dataTD,
                  int framesize,
                  /* Output Arguments */
                  float_complex*** dataFD);
 
void qmf_synthesis(/* Input Arguments */
                   void * const hQMF,
                   float_complex*** dataFD,
                   int framesize,
                   /* Output Arguments */
                   float** dataTD);
 
void qmf_channelChange(void * const hQMF,
                       int new_nCHin,
                       int new_nCHout);
 
void qmf_clearBuffers(void * const hQMF);
 
int qmf_getProcDelay(void * const hQMF);
 
int qmf_getNBands(void * const hQMF);
 
void qmf_getCentreFreqs(/* Input Arguments */
                        void * const hQMF,
                        float fs,
                        int nBands,
                        /* Output Arguments */
                        float* centreFreq);
 
void qmf_FIRtoFilterbankCoeffs(/* Input Arguments */
                               float* hIR,
                               int N_dirs,
                               int nCH,
                               int ir_len,
                               int hopSize,
                               int hybridmode,
                               /* Output Arguments */
                               float_complex* hFB);
 
 
#ifdef __cplusplus
}/* extern "C" */
#endif /* __cplusplus */
 
#endif /* SAF_QMF_H_INCLUDED */
 
 /* doxygen addtogroup Utilities */