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/*
Copyright (C) 2003-2008 Fons Adriaensen <fons@kokkinizita.net>
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 __RANKWAVE_H
#define __RANKWAVE_H
#include "addsynth.h"
#include "rngen.h"
#define PERIOD 64
class Pipewave
{
private:
Pipewave () :
_p0 (0), _p1 (0), _p2 (0), _l1 (0), _k_s (0), _k_r (0), _m_r (0),
_link (0), _sbit (0), _sdel (0),
_p_p (0), _y_p (0), _z_p (0), _p_r (0), _y_r (0), _g_r (0), _i_r (0)
{}
~Pipewave (void) { delete[] _p0; }
friend class Rankwave;
void genwave (Addsynth *D, int n, float fsamp, float fpipe);
void save (FILE *F);
void load (FILE *F);
void play (void);
static void looplen (float f, float fsamp, int lmax, int *aa, int *bb);
static void attgain (int n, float p);
float *_p0; // attack start
float *_p1; // loop start
float *_p2; // loop end
int32_t _l0; // attack length
int32_t _l1; // loop length
int16_t _k_s; // sample step
int16_t _k_r; // release lenght
float _m_r; // release multiplier
float _d_r; // release detune
float _d_p; // instability
Pipewave *_link; // link to next in active chain
uint32_t _sbit; // on state bit
uint32_t _sdel; // delayed state
float *_out; // audio output buffer
float *_p_p; // play pointer
float _y_p; // play interpolation
float _z_p; // play interpolation speed
float *_p_r; // release pointer
float _y_r; // release interpolation
float _g_r; // release gain
int16_t _i_r; // release count
static void initstatic (float fsamp);
static Rngen _rgen;
static float *_arg;
static float *_att;
};
//---------------------------------------------------------
// Rankwave
//---------------------------------------------------------
class Rankwave
{
Rankwave (const Rankwave&);
Rankwave& operator=(const Rankwave&);
int _n0;
int _n1;
uint32_t _sbit;
Pipewave *_list;
Pipewave *_pipes;
bool _modif;
public:
Rankwave (int n0, int n1);
~Rankwave ();
void note_on (int n) {
if ((n < _n0) || (n > _n1)) {
qDebug("Rankwave: bad key");
return;
}
Pipewave *P = _pipes + (n - _n0);
P->_sbit = _sbit;
if (! (P->_sdel || P->_p_p || P->_p_r)) {
P->_sdel |= _sbit;
P->_link = _list;
_list = P;
}
}
void note_off (int n)
{
if ((n < _n0) || (n > _n1)) return;
Pipewave *P = _pipes + (n - _n0);
P->_sdel >>= 4;
P->_sbit = 0;
}
void all_off (void)
{
Pipewave *P;
for (P = _list; P; P = P->_link) P->_sbit = 0;
}
int n0 (void) const { return _n0; }
int n1 (void) const { return _n1; }
void play (int shift);
void set_param (float *out, int del, int pan);
void gen_waves (Addsynth *D, float fsamp, float fbase, float *scale);
int save (const char *path, Addsynth *D, float fsamp, float fbase, float *scale);
int load (const char *path, Addsynth *D, float fsamp, float fbase, float *scale);
bool modif (void) const { return _modif; }
int _cmask; // used by division logic
int _nmask; // used by division logic
};
#endif
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