/usr/include/modem.h is in soundmodem 0.20-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/*
* modem.h -- Defines for the modem.
*
* Copyright (C) 1999-2015 Thomas Sailer (sailer@ife.ee.ethz.ch)
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Please note that the GPL allows you to use the driver, NOT the radio.
* In order to use the radio, you need a license from the communications
* authority of your country.
*
*/
/*****************************************************************************/
#ifndef _MODEM_H
#define _MODEM_H
/* ---------------------------------------------------------------------- */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/types.h>
#include <stdarg.h>
/* ---------------------------------------------------------------------- */
/*
* Bittypes
*/
#ifndef HAVE_SIGNED_BITTYPES
#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
typedef int int8_t __attribute__((__mode__(__QI__)));
typedef int int16_t __attribute__((__mode__(__HI__)));
typedef int int32_t __attribute__((__mode__(__SI__)));
typedef int int64_t __attribute__((__mode__(__DI__)));
#else
typedef char /* deduced */ int8_t __attribute__((__mode__(__QI__)));
typedef short /* deduced */ int16_t __attribute__((__mode__(__HI__)));
typedef long /* deduced */ int32_t __attribute__((__mode__(__SI__)));
typedef long long /* deduced */ int64_t __attribute__((__mode__(__DI__)));
#endif
#endif /* !HAVE_SIGNED_BITTYPES */
#ifndef HAVE_UNSIGNED_BITTYPES
#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
typedef unsigned int u_int8_t __attribute__((__mode__(__QI__)));
typedef unsigned int u_int16_t __attribute__((__mode__(__HI__)));
typedef unsigned int u_int32_t __attribute__((__mode__(__SI__)));
typedef unsigned int u_int64_t __attribute__((__mode__(__DI__)));
#else
typedef unsigned char /* deduced */ u_int8_t __attribute__((__mode__(__QI__)));
typedef unsigned short /* deduced */ u_int16_t __attribute__((__mode__(__HI__)));
typedef unsigned long /* deduced */ u_int32_t __attribute__((__mode__(__SI__)));
typedef unsigned long long /* deduced */ u_int64_t __attribute__((__mode__(__DI__)));
#endif
#endif /* !HAVE_UNSIGNED_BITTYPES */
/* ---------------------------------------------------------------------- */
#if __GNUC__ < 5
#define only_inline extern inline
#else
#define only_inline inline
#endif
struct modemchannel;
extern void audiowrite(struct modemchannel *chan, const int16_t *samples, unsigned int nr);
extern void audioread(struct modemchannel *chan, int16_t *samples, unsigned int nr, u_int16_t tim);
extern u_int16_t audiocurtime(struct modemchannel *chan);
extern int pktget(struct modemchannel *chan, unsigned char *data, unsigned int len);
extern void pktput(struct modemchannel *chan, const unsigned char *data, unsigned int len);
extern void pktsetdcd(struct modemchannel *chan, int dcd);
extern void p3dreceive(struct modemchannel *chan, const unsigned char *pkt, u_int16_t crc);
extern void p3drxstate(struct modemchannel *chan, unsigned int synced, unsigned int carrierfreq);
#define MLOG_FATAL 0
#define MLOG_ERROR 1
#define MLOG_WARNING 2
#define MLOG_NOTICE 3
#define MLOG_INFO 4
#define MLOG_DEBUG 5
extern void logvprintf(unsigned int level, const char *fmt, va_list args);
extern void logprintf(unsigned int level, const char *fmt, ...);
extern void logerr(unsigned int level, const char *st);
extern unsigned int log_verblevel;
only_inline int logcheck(unsigned int vl)
{
return vl <= log_verblevel;
}
#define MODEMPAR_STRING 0
#define MODEMPAR_COMBO 1
#define MODEMPAR_NUMERIC 2
#define MODEMPAR_CHECKBUTTON 3
struct modemparams {
const char *name;
const char *label;
const char *tooltip;
const char *dflt;
unsigned int type;
union {
struct {
float min;
float max;
float step;
float pagestep;
} n;
struct {
const char *combostr[8];
} c;
} u;
};
struct modulator {
struct modulator *next;
const char *name;
const struct modemparams *params;
void *(*config)(struct modemchannel *chan, unsigned int *samplerate, const char *params[]);
void (*init)(void *, unsigned int samplerate);
void (*modulate)(void *, unsigned int txdelay);
void (*free)(void *);
};
struct demodulator {
struct demodulator *next;
const char *name;
const struct modemparams *params;
void *(*config)(struct modemchannel *chan, unsigned int *samplerate, const char *params[]);
void (*init)(void *, unsigned int samplerate, unsigned int *bitrate);
void (*demodulate)(void *);
void (*free)(void *);
};
/* ---------------------------------------------------------------------- */
extern struct modulator afskmodulator;
extern struct demodulator afskdemodulator;
extern struct modulator fskmodulator;
extern struct demodulator fskdemodulator;
extern struct demodulator fskpspdemodulator;
extern struct demodulator fskeqdemodulator;
extern struct modulator pammodulator;
extern struct demodulator pamdemodulator;
extern struct modulator pskmodulator;
extern struct demodulator pskdemodulator;
extern struct modulator newqpskmodulator;
extern struct demodulator newqpskdemodulator;
extern struct modulator p3dmodulator;
extern struct demodulator p3ddemodulator;
/* ---------------------------------------------------------------------- */
#ifndef HAVE_VSNPRINTF
extern int vsnprintf(char *str, size_t n, char const *fmt, va_list args);
#endif
#ifndef HAVE_SNPRINTF
extern int snprintf(char *str, size_t n, char const *fmt, ...) __attribute__ ((format (printf, 3, 4)));
#endif
/* ---------------------------------------------------------------------- */
#endif /* _MODEM_H */
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