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/*
ZynAddSubFX - a software synthesizer
Envelope.h - Envelope implementation
Copyright (C) 2002-2005 Nasca Octavian Paul
Author: Nasca Octavian Paul
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License
as published by the Free Software Foundation.
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 (version 2) for more details.
You should have received a copy of the GNU General Public License (version 2)
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef ENVELOPE_H
#define ENVELOPE_H
#include <math.h>
#include "../globals.h"
#include "../Params/EnvelopeParams.h"
class Envelope{
public:
Envelope(EnvelopeParams *envpars,REALTYPE basefreq);
~Envelope();
void relasekey();
REALTYPE envout();
REALTYPE envout_dB();
int finished();//returns 1 if the envelope is finished
private:
int envpoints;
int envsustain;//"-1" means disabled
REALTYPE envdt[MAX_ENVELOPE_POINTS];//millisecons
REALTYPE envval[MAX_ENVELOPE_POINTS];// [0.0 .. 1.0]
REALTYPE envstretch;
int linearenvelope;
int currentpoint; //current envelope point (starts from 1)
int forcedrelase;
char keyreleased; //if the key was released
char envfinish;
REALTYPE t; // the time from the last point
REALTYPE inct;// the time increment
REALTYPE envoutval;//used to do the forced release
};
#endif
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