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/*
Copyright (C) 2018 James C. Ahlstrom
All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License version 2.1, as
published by the Free Software Foundation. This program is
distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __FILTER__
#define __FILTER__
#include <complex.h>
struct quisk_cfFilter { // Structure to hold the static data for FIR filters
float *dCoefs; // real filter coefficients
complex float *cpxCoefs; // complex filter coefficients
int nBuf; // dimension of cBuf
int nTaps; // dimension of dSamples, cSamples, dCoefs
int decim_index; // index of next sample for decimation
complex float *cSamples; // storage for old samples
complex float *ptcSamp; // next available position in cSamples
complex float *cBuf; // auxiliary buffer for interpolation
};
extern int quisk_cfInterpDecim(complex float *, int, struct quisk_cfFilter *,
int, int);
extern void quisk_filt_cfInit(struct quisk_cfFilter *, float *, int);
extern void quisk_filt_destroy(struct quisk_cfFilter *);
extern void quisk_cfTune(struct quisk_cfFilter *, float);
extern void quisk_ccfFilter(complex float *, complex float *, int,
struct quisk_cfFilter *);
extern float filtP400S600[100];
extern float filtP550S750[160];
extern float filtP650S900[100];
extern float filtP900S1100[100];
extern float filtP1100S1300[100];
extern float filtP200S400[100];
extern float quiskFilt120t480[480];
#endif
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