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addsynth.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 __ADDSYNTH_H
#define __ADDSYNTH_H


#include <stdio.h>
#include "itypes.h"


#define N_NOTE 11
#define N_HARM 64
#define NOTE_MIN 36
#define NOTE_MAX 96



class N_func
{
public:

    N_func (void);
    void reset (float v);
    void setv (int i, float v);
    void clrv (int i);
    float vs (int i) const { return _v [i]; }
    int   st (int i) const { return (_b & (1 << i)) ? 1 : 0; }
    float vi (int n) const
    {
      int   i = n / 6;
        int   k = n - 6 * i;
        float v = _v [i];
        if (k) v += k * (_v [i + 1] - v) / 6; 
        return v;
    }       

    void write (FILE *F);
    void read (FILE *F);
                
private:

    int   _b;
    float _v [N_NOTE];
};



class HN_func
{
public:

    HN_func (void);
    void reset (float v);
    void setv (int i, float v);
    void clrv (int i);
    void setv (int h, int i, float v) { _h [h].setv (i, v); }
    void clrv (int h, int i) { _h [h].clrv (i); }     
    float vs (int h, int i) const { return _h [h].vs (i); }
    int   st (int h, int i) const { return _h [h].st (i); }
    float vi (int h, int n) const { return _h [h].vi (n); }
    void write (FILE *F, int k);
    void read (FILE *F, int k);
                
private:

    N_func _h [N_HARM];
};



class Addsynth
{
public:

    Addsynth (void);

    void reset (void);
    int save (const char *sdir); 
    int load (const char *sdir);
    
    char       _filename [64]; 
    char       _stopname [32];
    char       _copyrite [56];
    char       _mnemonic [8];
    char       _comments [56];
    char       _reserved [8];
    S32        _n0;
    S32        _n1;
    S32        _fn;
    S32        _fd;
    N_func     _n_vol;
    N_func     _n_off;
    N_func     _n_ran;         
    N_func     _n_ins;
    N_func     _n_att;
    N_func     _n_atd;         
    N_func     _n_dct;
    N_func     _n_dcd;         
    HN_func    _h_lev;
    HN_func    _h_ran;
    HN_func    _h_att;
    HN_func    _h_atp;

    char       _pan;
    S32        _del;
};


#endif


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