mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-22 16:08:39 -05:00
138 lines
3.9 KiB
C++
138 lines
3.9 KiB
C++
/* fmd.h
|
|
|
|
This file is part of a program that implements a Software-Defined Radio.
|
|
|
|
Copyright (C) 2013 Warren Pratt, NR0V
|
|
Copyright (C) 2024 Edouard Griffiths, F4EXB Adapted to SDRangel
|
|
|
|
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 wdsp_fmd_h
|
|
#define wdsp_fmd_h
|
|
|
|
#include "export.h"
|
|
|
|
namespace WDSP {
|
|
|
|
class FIRCORE;
|
|
class SNOTCH;
|
|
class WCPAGC;
|
|
class RXA;
|
|
|
|
class WDSP_API FMD
|
|
{
|
|
public:
|
|
int run;
|
|
int size;
|
|
float* in;
|
|
float* out;
|
|
double rate;
|
|
double f_low; // audio low cutoff
|
|
double f_high; // audio high cutoff
|
|
// pll
|
|
double fmin; // pll - minimum carrier freq to lock
|
|
double fmax; // pll - maximum carrier freq to lock
|
|
double omega_min; // pll - minimum lock check parameter
|
|
double omega_max; // pll - maximum lock check parameter
|
|
double zeta; // pll - damping factor; as coded, must be <=1.0
|
|
double omegaN; // pll - natural frequency
|
|
double phs; // pll - phase accumulator
|
|
double omega; // pll - locked pll frequency
|
|
double fil_out; // pll - filter output
|
|
double g1, g2; // pll - filter gain parameters
|
|
double pllpole; // pll - pole frequency
|
|
// for dc removal
|
|
double tau;
|
|
double mtau;
|
|
double onem_mtau;
|
|
double fmdc;
|
|
// pll audio gain
|
|
double deviation;
|
|
double again;
|
|
// for de-emphasis filter
|
|
float* audio;
|
|
FIRCORE *pde;
|
|
int nc_de;
|
|
int mp_de;
|
|
// for audio filter
|
|
FIRCORE *paud;
|
|
int nc_aud;
|
|
int mp_aud;
|
|
double afgain;
|
|
// CTCSS removal
|
|
SNOTCH *sntch;
|
|
int sntch_run;
|
|
double ctcss_freq;
|
|
// detector limiter
|
|
WCPAGC *plim;
|
|
int lim_run;
|
|
double lim_gain;
|
|
double lim_pre_gain;
|
|
|
|
static FMD* create_fmd (
|
|
int run,
|
|
int size,
|
|
float* in,
|
|
float* out,
|
|
int rate,
|
|
double deviation,
|
|
double f_low,
|
|
double f_high,
|
|
double fmin,
|
|
double fmax,
|
|
double zeta,
|
|
double omegaN,
|
|
double tau,
|
|
double afgain,
|
|
int sntch_run,
|
|
double ctcss_freq,
|
|
int nc_de,
|
|
int mp_de,
|
|
int nc_aud,
|
|
int mp_aud
|
|
);
|
|
static void destroy_fmd (FMD *a);
|
|
static void flush_fmd (FMD *a);
|
|
static void xfmd (FMD *a);
|
|
static void setBuffers_fmd (FMD *a, float* in, float* out);
|
|
static void setSamplerate_fmd (FMD *a, int rate);
|
|
static void setSize_fmd (FMD *a, int size);
|
|
// RXA Properties
|
|
static void SetFMDeviation (RXA& rxa, double deviation);
|
|
static void SetCTCSSFreq (RXA& rxa, double freq);
|
|
static void SetCTCSSRun (RXA& rxa, int run);
|
|
static void SetFMNCde (RXA& rxa, int nc);
|
|
static void SetFMMPde (RXA& rxa, int mp);
|
|
static void SetFMNCaud (RXA& rxa, int nc);
|
|
static void SetFMMPaud (RXA& rxa, int mp);
|
|
static void SetFMLimRun (RXA& rxa, int run);
|
|
static void SetFMLimGain (RXA& rxa, double gaindB);
|
|
static void SetFMAFFilter(RXA& rxa, double low, double high);
|
|
|
|
private:
|
|
static void calc_fmd (FMD *a);
|
|
static void decalc_fmd (FMD *a);
|
|
};
|
|
|
|
} // namespace WDSP
|
|
|
|
#endif
|