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division.h

/*
    Copyright (C) 2003 Fons Adriaensen <fons.adriaensen@skynet.be>
    
    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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/


#ifndef __DIVISION_H
#define __DIVISION_H


#include "asection.h"
#include "rankwave.h"


class Division
{
public:

    Division (Asection *asect, float fsam);
    ~Division (void);

    void set_rank (int ind, Rankwave *W, int pan, int del);
    void set_swell (float stat) { _swel = 0.2 + 0.8 * stat * stat; }
    void set_tfreq (float freq) { _w = 6.283184f * PERIOD * freq / _fsam; }
    void set_tmodd (float modd) { _m = modd; }
    void set_div_mask (int bits);
    void clr_div_mask (int bits);
    void set_rank_mask (int ind, int bits);
    void clr_rank_mask (int ind, int bits);
    void trem_on (void)  { _trem = 1; }
    void trem_off (void) { _trem = 2; }

    void process (void);
    void update (int note, int mask);
    void update (unsigned char *keys);

private:
   
    Asection  *_asect;
    Rankwave  *_ranks [NRANKS];
    int        _nrank;
    int        _dmask;
    int        _trem;
    float      _fsam;
    float      _swel;
    float      _gain;
    float      _w;    
    float      _c;
    float      _s;
    float      _m;
    float      _buff [NCHANN * PERIOD];
};


#endif


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