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/* Copyright (c) 2002-2003 krzYszcz and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
/* LATER: 'click' method */
#include <string.h>
#include "m_pd.h"
#include "sickle/sic.h"
#include "sickle/arsic.h"
#define INDEX_MAXCHANNELS 4 /* LATER implement arsic resizing feature */
typedef struct _index
{
t_arsic x_arsic;
int x_maxchannels;
int x_effchannel; /* effective channel (clipped reqchannel) */
int x_reqchannel; /* requested channel */
} t_index;
static t_class *index_class;
static void index_set(t_index *x, t_symbol *s)
{
arsic_setarray((t_arsic *)x, s, 1);
}
static t_int *index_perform(t_int *w)
{
t_arsic *sic = (t_arsic *)(w[1]);
int nblock = (int)(w[2]);
t_float *out = (t_float *)(w[4]);
if (sic->s_playable)
{
t_index *x = (t_index *)sic;
t_float *xin = (t_float *)(w[3]);
int index, maxindex = sic->s_vecsize - 1;
t_float *vp = sic->s_vectors[x->x_effchannel];
if (vp) /* handle array swapping on the fly via ft1 */
{
while (nblock--)
{
index = (int)(*xin++ + 0.5);
if (index < 0)
index = 0;
else if (index > maxindex)
index = maxindex;
*out++ = vp[index];
}
}
else while (nblock--) *out++ = 0;
}
else while (nblock--) *out++ = 0;
return (w + 5);
}
static void index_ft1(t_index *x, t_floatarg f)
{
if ((x->x_reqchannel = (f > 1 ? (int)f - 1 : 0)) > x->x_maxchannels)
x->x_effchannel = x->x_maxchannels - 1;
else
x->x_effchannel = x->x_reqchannel;
}
static void index_dsp(t_index *x, t_signal **sp)
{
t_arsic *sic = (t_arsic *)x;
arsic_dsp(sic, sp, index_perform, sic->s_mononame != 0);
}
static void index_free(t_index *x)
{
arsic_free((t_arsic *)x);
}
static void *index_new(t_symbol *s, t_floatarg f)
{
int ch = (f > 0 ? (int)f : 0);
/* two signals: index input, value output */
t_index *x = (t_index *)arsic_new(index_class, s,
(ch ? INDEX_MAXCHANNELS : 0), 2, 0);
if (x)
{
if (ch > INDEX_MAXCHANNELS)
ch = INDEX_MAXCHANNELS;
x->x_maxchannels = (ch ? INDEX_MAXCHANNELS : 1);
x->x_effchannel = x->x_reqchannel = (ch ? ch - 1 : 0);
inlet_new((t_object *)x, (t_pd *)x, &s_float, gensym("ft1"));
outlet_new((t_object *)x, &s_signal);
}
return (x);
}
void index_tilde_setup(void)
{
index_class = class_new(gensym("index~"),
(t_newmethod)index_new,
(t_method)index_free,
sizeof(t_index), 0,
A_DEFSYM, A_DEFFLOAT, 0);
arsic_setup(index_class, index_dsp, SIC_FLOATTOSIGNAL);
class_addmethod(index_class, (t_method)index_set,
gensym("set"), A_SYMBOL, 0);
class_addmethod(index_class, (t_method)index_ft1,
gensym("ft1"), A_FLOAT, 0);
}
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