111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
/* fmd.h
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This file is part of a program that implements a Software-Defined Radio.
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Copyright (C) 2013 Warren Pratt, NR0V
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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The author can be reached by email at
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warren@wpratt.com
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*/
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#ifndef _fmd_h
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#define _fmd_h
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#include "iir.h"
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#include "firmin.h"
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#include "wcpAGC.h"
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typedef struct _fmd
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{
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int run;
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int size;
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double* in;
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double* out;
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double rate;
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double f_low; // audio low cutoff
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double f_high; // audio high cutoff
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// pll
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double fmin; // pll - minimum carrier freq to lock
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double fmax; // pll - maximum carrier freq to lock
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double omega_min; // pll - minimum lock check parameter
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double omega_max; // pll - maximum lock check parameter
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double zeta; // pll - damping factor; as coded, must be <=1.0
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double omegaN; // pll - natural frequency
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double phs; // pll - phase accumulator
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double omega; // pll - locked pll frequency
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double fil_out; // pll - filter output
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double g1, g2; // pll - filter gain parameters
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double pllpole; // pll - pole frequency
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// for dc removal
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double tau;
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double mtau;
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double onem_mtau;
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double fmdc;
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// pll audio gain
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double deviation;
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double again;
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// for de-emphasis filter
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double* audio;
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FIRCORE pde;
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int nc_de;
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int mp_de;
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// for audio filter
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FIRCORE paud;
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int nc_aud;
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int mp_aud;
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double afgain;
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// CTCSS removal
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SNOTCH sntch;
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int sntch_run;
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double ctcss_freq;
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// detector limiter
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WCPAGC plim;
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int lim_run;
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double lim_gain;
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double lim_pre_gain;
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} fmd, *FMD;
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extern FMD create_fmd ( int run, int size, double* in, double* out, int rate, double deviation,
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double f_low, double f_high, double fmin, double fmax, double zeta, double omegaN, double tau,
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double afgain, int sntch_run, double ctcss_freq, int nc_de, int mp_de, int nc_aud, int mp_aud);
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extern void destroy_fmd (FMD a);
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extern void flush_fmd (FMD a);
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extern void xfmd (FMD a);
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extern void setBuffers_fmd (FMD a, double* in, double* out);
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extern void setSamplerate_fmd (FMD a, int rate);
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extern void setSize_fmd (FMD a, int size);
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// RXA Properties
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extern __declspec (dllexport) void SetRXAFMDeviation (int channel, double deviation);
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extern __declspec (dllexport) void SetRXAFMNCde (int channel, int nc);
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extern __declspec (dllexport) void SetRXAFMMPde (int channel, int mp);
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extern __declspec (dllexport) void SetRXAFMNCaud (int channel, int nc);
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extern __declspec (dllexport) void SetRXAFMMPaud (int channel, int mp);
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#endif
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