cwtones.h

/* spottone.h */
/*
This file is part of a program that implements a Software-Defined Radio.

Copyright (C) 2005 by Frank Brickle, AB2KT and Bob McGwier, N4HY

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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

The authors can be reached by email at

ab2kt@arrl.net
or
rwmcgwier@comcast.net

or by paper mail at

The DTTS Microwave Society
6 Kathleen Place
Bridgewater, NJ 08807
*/

#ifndef _cwtone_h
#define _cwtone_h

#include <fromsys.h>
#include <banal.h>
#include <datatypes.h>
#include <bufvec.h>
#include <cxops.h>
#include <oscillator.h>
#include <math.h>

#define CWTone_IDLE (0)
#define CWTone_WAIT (1)
#define CWTone_RISE (2)
#define CWTone_STDY (3)
#define CWTone_FALL (4)
#define CWTone_HOLD (5)

typedef struct _cw_tone_gen
{
    REAL curr, gain, mul, scl, sr;
    struct
    {
        REAL freq;
        OSC gen;
    } osc;
    struct
    {
        REAL dur, incr;
        int want, have;
    } rise, fall;
    int size, stage;
    CXB buf;
} CWToneGenDesc, *CWToneGen;

extern CWToneGen newCWToneGen(REAL gain,   // dB
                              REAL freq,   // Hz
                              REAL rise,   // msec
                              REAL fall,   // msec
                              int size,    // buflen
                              REAL samplerate);
extern void delCWToneGen(CWToneGen gen);
extern void setCWToneGenVals(CWToneGen gen,
                             REAL gain, REAL freq, REAL rise, REAL fall);
extern void CWToneOn(CWToneGen gen);
extern void CWToneOff(CWToneGen gen);
extern BOOLEAN CWTone(CWToneGen gen);

#endif