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/*
ZynAddSubFX - a software synthesizer
SUBnote.h - The subtractive synthesizer
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 SUB_NOTE_H
#define SUB_NOTE_H
#include "../globals.h"
#include "../Params/SUBnoteParameters.h"
#include "../Params/Controller.h"
#include "Envelope.h"
#include "../DSP/Filter.h"
class SUBnote{
public:
SUBnote(SUBnoteParameters *parameters,Controller *ctl_,REALTYPE freq,REALTYPE velocity,int portamento_,int midinote);
~SUBnote();
int noteout(REALTYPE *outl,REALTYPE *outr);//note output,return 0 if the note is finished
void relasekey();
int finished();
int ready; //if I can get the sampledata
private:
void computecurrentparameters();
void initparameters(REALTYPE freq);
void KillNote();
SUBnoteParameters *pars;
//parameters
int stereo;
int numstages;//number of stages of filters
int numharmonics;//number of harmonics (after the too higher hamonics are removed)
int start;//how the harmonics start
REALTYPE basefreq;
REALTYPE panning;
Envelope *AmpEnvelope;
Envelope *FreqEnvelope;
Envelope *BandWidthEnvelope;
Filter *GlobalFilterL,*GlobalFilterR;
Envelope *GlobalFilterEnvelope;
//internal values
ONOFFTYPE NoteEnabled;
int firsttick,portamento;
REALTYPE volume,oldamplitude,newamplitude;
REALTYPE GlobalFilterCenterPitch;//octaves
REALTYPE GlobalFilterFreqTracking;
struct bpfilter{
REALTYPE freq,bw,amp; //filter parameters
REALTYPE a1,a2,b0,b2;//filter coefs. b1=0
REALTYPE xn1,xn2,yn1,yn2; //filter internal values
};
void initfilter(bpfilter &filter,REALTYPE freq,REALTYPE bw,REALTYPE amp,REALTYPE mag);
void computefiltercoefs(bpfilter &filter,REALTYPE freq,REALTYPE bw,REALTYPE gain);
void filter(bpfilter &filter,REALTYPE *smps);
bpfilter *lfilter,*rfilter;
REALTYPE *tmpsmp;
REALTYPE *tmprnd;//this is filled with random numbers
Controller *ctl;
int oldpitchwheel,oldbandwidth;
REALTYPE globalfiltercenterq;
};
#endif
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