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Uladzimir Karpenka
2026-06-01 15:58:45 +03:00
commit 89c8a0e2b5
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emph.h
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/* emph.h
This file is part of a program that implements a Software-Defined Radio.
Copyright (C) 2014, 2016, 2023 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
*/
/********************************************************************************************************
* *
* Partitioned Overlap-Save FM Pre-Emphasis *
* *
********************************************************************************************************/
#ifndef _emphp_h
#define _emphp_h
#include "firmin.h"
typedef struct _emphp
{
int run;
int position;
int size;
int nc;
int mp;
double* in;
double* out;
int ctype;
double f_low;
double f_high;
double rate;
FIRCORE p;
} emphp, *EMPHP;
extern EMPHP create_emphp (int run, int position, int size, int nc, int mp,
double* in, double* out, int rate, int ctype, double f_low, double f_high);
extern void destroy_emphp (EMPHP a);
extern void flush_emphp (EMPHP a);
extern void xemphp (EMPHP a, int position);
extern void setBuffers_emphp (EMPHP a, double* in, double* out);
extern void setSamplerate_emphp (EMPHP a, int rate);
extern void setSize_emphp (EMPHP a, int size);
__declspec (dllexport) void SetTXAFMEmphMP (int channel, int mp);
__declspec (dllexport) void SetTXAFMEmphNC (int channel, int nc);
__declspec (dllexport) void SetTXAFMPreEmphFreqs(int channel, double low, double high);
#endif
/********************************************************************************************************
* *
* Overlap-Save FM Pre-Emphasis *
* *
********************************************************************************************************/
#ifndef _emph_h
#define _emph_h
typedef struct _emph
{
int run;
int position;
int size;
double* in;
double* out;
int ctype;
double f_low;
double f_high;
double* infilt;
double* product;
double* mults;
double rate;
fftw_plan CFor;
fftw_plan CRev;
} emph, *EMPH;
extern EMPH create_emph (int run, int position, int size, double* in, double* out, int rate, int ctype, double f_low, double f_high);
extern void destroy_emph (EMPH a);
extern void flush_emph (EMPH a);
extern void xemph (EMPH a, int position);
extern void setBuffers_emph (EMPH a, double* in, double* out);
extern void setSamplerate_emph (EMPH a, int rate);
extern void setSize_emph (EMPH a, int size);
#endif