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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 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.
- */
-
- #ifndef ENVELOPE_H
- #define ENVELOPE_H
-
- #include "../globals.h"
-
- /**Implementation of a general Envelope*/
- class Envelope
- {
- public:
-
- /**Constructor*/
- Envelope(class EnvelopeParams &pars, float basefreq, float dt);
- /**Destructor*/
- ~Envelope();
- void releasekey();
- /**Push Envelope to finishing state*/
- void forceFinish(void);
- float envout();
- float envout_dB();
- /**Determines the status of the Envelope
- * @return returns 1 if the envelope is finished*/
- 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 forcedrelease;
- 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
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