Envelope.h

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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 or later) 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 "../globals.h"
#include "../Params/EnvelopeParams.h"

class Envelope
{
    public:

        Envelope(class EnvelopeParams *envpars, float basefreq);
        ~Envelope();
        void relasekey();
        float envout();
        float envout_dB();
        bool finished() const;
    private:
        float env_rap2dB(float rap);
        float env_dB2rap(float db);
        int   envpoints;
        int   envsustain;    //"-1" means disabled
        float envdt[MAX_ENVELOPE_POINTS]; //millisecons
        float envval[MAX_ENVELOPE_POINTS]; // [0.0f .. 1.0f]
        float envstretch;
        int   linearenvelope;
 
        int   currentpoint;    //current envelope point (starts from 1)
        int   forcedrelase;
        bool  keyreleased;    //if the key was released
        bool  envfinish;
        float t; // the time from the last point
        float inct; // the time increment
        float envoutval; //used to do the forced release
};
 
 
#endif