103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
/* nbp.h
|
|
|
|
This file is part of a program that implements a Software-Defined Radio.
|
|
|
|
Copyright (C) 2015, 2016 Warren Pratt, NR0V
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
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 General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
|
|
The author can be reached by email at
|
|
|
|
warren@wpratt.com
|
|
|
|
*/
|
|
|
|
#ifndef _nbp_h
|
|
#define _nbp_h
|
|
#include "firmin.h"
|
|
typedef struct _notchdb
|
|
{
|
|
int master_run;
|
|
double tunefreq;
|
|
double shift;
|
|
int nn;
|
|
int* active;
|
|
double* fcenter;
|
|
double* fwidth;
|
|
double* nlow;
|
|
double* nhigh;
|
|
int maxnotches;
|
|
} notchdb, *NOTCHDB;
|
|
|
|
extern NOTCHDB create_notchdb (int master_run, int maxnotches);
|
|
|
|
extern void destroy_notchdb (NOTCHDB b);
|
|
|
|
typedef struct _nbp
|
|
{
|
|
int run; // run the filter
|
|
int fnfrun; // use the notches
|
|
int position; // position in processing pipeline
|
|
int size; // buffer size
|
|
int nc; // number of filter coefficients
|
|
int mp; // minimum phase flag
|
|
double* in; // input buffer
|
|
double* out; // output buffer
|
|
double flow; // low bandpass cutoff freq
|
|
double fhigh; // high bandpass cutoff freq
|
|
double* impulse; // filter impulse response
|
|
double rate; // sample rate
|
|
int wintype; // filter window type
|
|
double gain; // filter gain
|
|
int autoincr; // auto-increment notch width
|
|
int maxpb; // maximum number of passbands
|
|
NOTCHDB* ptraddr; // ptr to addr of notch-database data structure
|
|
double* bplow; // array of passband lows
|
|
double* bphigh; // array of passband highs
|
|
int numpb; // number of passbands
|
|
FIRCORE p;
|
|
int havnotch;
|
|
int hadnotch;
|
|
} nbp, *NBP;
|
|
|
|
extern NBP create_nbp(int run, int fnfrun, int position, int size, int nc, int mp, double* in, double* out,
|
|
double flow, double fhigh, int rate, int wintype, double gain, int autoincr, int maxpb, NOTCHDB* ptraddr);
|
|
|
|
extern void destroy_nbp (NBP a);
|
|
|
|
extern void flush_nbp (NBP a);
|
|
|
|
extern void xnbp (NBP a, int pos);
|
|
|
|
extern void setBuffers_nbp (NBP a, double* in, double* out);
|
|
|
|
extern void setSamplerate_nbp (NBP a, int rate);
|
|
|
|
extern void setSize_nbp (NBP a, int size);
|
|
|
|
extern void calc_nbp_impulse (NBP a);
|
|
|
|
extern void setNc_nbp (NBP a);
|
|
|
|
extern void setMp_nbp (NBP a);
|
|
|
|
__declspec (dllexport) void RXANBPSetFreqs (int channel, double flow, double fhigh);
|
|
|
|
__declspec (dllexport) void RXANBPSetNC (int channel, int nc);
|
|
|
|
__declspec (dllexport) void RXANBPSetMP (int channel, int mp);
|
|
|
|
#endif
|