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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. */
#include <string.h>
#include "m_pd.h"
#include "shared.h"
#include "common/loud.h"
#include "common/vefl.h"
#include "sickle/sic.h"
#define CYCLE_TABSIZE 512
typedef struct _cycle
{
t_sic x_sic;
double x_phase;
double x_conv;
t_symbol *x_name;
int x_offset;
t_float *x_table;
t_float *x_costable;
t_float x_usertable[CYCLE_TABSIZE + 1];
} t_cycle;
static t_class *cycle_class;
static void cycle_gettable(t_cycle *x)
{
x->x_table = 0;
if (x->x_name)
{
int tabsize = 0;
t_float *table = vefl_get(x->x_name, &tabsize, 1, (t_pd *)x);
/* CHECKED buffer is copied */
if (table)
{
int indx = x->x_offset + CYCLE_TABSIZE;
t_float *ptr = x->x_usertable + CYCLE_TABSIZE;
if (indx == tabsize)
{
*ptr-- = *table;
indx--;
}
if (indx < tabsize)
{
table += indx;
indx -= x->x_offset;
while (indx--) *ptr-- = *table--;
x->x_table = x->x_usertable;
}
/* CHECKED else no complaint */
}
}
else x->x_table = x->x_costable;
if (!x->x_table)
{
/* CHECKED (incompatible) cycle~ is disabled -- garbage is output */
x->x_table = x->x_usertable;
memset(x->x_table, 0, (CYCLE_TABSIZE + 1) * sizeof(*x->x_table));
}
}
static void cycle_set(t_cycle *x, t_symbol *s, t_floatarg f)
{
if (s && s != &s_)
{
x->x_name = s;
if ((x->x_offset = (int)f) < 0)
x->x_offset = 0;
}
else x->x_name = 0;
cycle_gettable(x);
}
static t_int *cycle_perform(t_int *w)
{
t_cycle *x = (t_cycle *)(w[1]);
int nblock = (int)(w[2]);
t_float *in1 = (t_float *)(w[3]);
t_float *in2 = (t_float *)(w[4]);
t_float *out = (t_float *)(w[5]);
t_float *tab = x->x_table;
t_float *addr, f1, f2, frac;
double dphase = x->x_phase + SHARED_UNITBIT32;
double conv = x->x_conv;
int32 normhipart;
t_shared_wrappy wrappy;
wrappy.w_d = SHARED_UNITBIT32;
normhipart = wrappy.w_i[SHARED_HIOFFSET];
wrappy.w_d = dphase + CYCLE_TABSIZE * *in2++; /* CHECKED */
dphase += *in1++ * conv;
addr = tab + (wrappy.w_i[SHARED_HIOFFSET] & (CYCLE_TABSIZE-1));
wrappy.w_i[SHARED_HIOFFSET] = normhipart;
frac = wrappy.w_d - SHARED_UNITBIT32;
while (--nblock)
{
wrappy.w_d = dphase + CYCLE_TABSIZE * *in2++; /* CHECKED */
dphase += *in1++ * conv;
f1 = addr[0];
f2 = addr[1];
addr = tab + (wrappy.w_i[SHARED_HIOFFSET] & (CYCLE_TABSIZE-1));
wrappy.w_i[SHARED_HIOFFSET] = normhipart;
*out++ = f1 + frac * (f2 - f1);
frac = wrappy.w_d - SHARED_UNITBIT32;
}
f1 = addr[0];
f2 = addr[1];
*out++ = f1 + frac * (f2 - f1);
wrappy.w_d = SHARED_UNITBIT32 * CYCLE_TABSIZE;
normhipart = wrappy.w_i[SHARED_HIOFFSET];
wrappy.w_d = dphase + (SHARED_UNITBIT32 * CYCLE_TABSIZE - SHARED_UNITBIT32);
wrappy.w_i[SHARED_HIOFFSET] = normhipart;
x->x_phase = wrappy.w_d - (SHARED_UNITBIT32 * CYCLE_TABSIZE);
return (w + 6);
}
static void cycle_dsp(t_cycle *x, t_signal **sp)
{
cycle_gettable(x);
x->x_conv = CYCLE_TABSIZE / sp[0]->s_sr;
dsp_add(cycle_perform, 5, x, sp[0]->s_n,
sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec);
}
static void *cycle_new(t_symbol *s, int ac, t_atom *av)
{
t_cycle *x = (t_cycle *)pd_new(cycle_class);
int i = (ac && av->a_type == A_FLOAT ? 1 : 0);
int tabsize = CYCLE_TABSIZE;
x->x_costable = sic_makecostable(&tabsize);
if (tabsize != CYCLE_TABSIZE)
{
loudbug_bug("cycle_new");
pd_free((t_pd *)x);
return (0);
}
if (ac && av->a_type == A_FLOAT)
{
sic_inlet((t_sic *)x, 0, 0, 0, ac, av);
ac--, av++;
}
sic_newinlet((t_sic *)x, 0);
outlet_new((t_object *)x, &s_signal);
x->x_offset = 0;
if (ac && av->a_type == A_SYMBOL)
{
x->x_name = av->a_w.w_symbol;
ac--, av++;
if (ac && av->a_type == A_FLOAT)
if ((x->x_offset = (int)av->a_w.w_float) < 0)
x->x_offset = 0;
}
else x->x_name = 0;
x->x_table = 0;
x->x_phase = 0.;
x->x_conv = 0.;
return (x);
}
void cycle_tilde_setup(void)
{
cycle_class = class_new(gensym("cycle~"),
(t_newmethod)cycle_new, 0,
sizeof(t_cycle), 0, A_GIMME, 0);
sic_setup(cycle_class, cycle_dsp, SIC_FLOATTOSIGNAL);
class_addmethod(cycle_class, (t_method)cycle_set,
gensym("set"), A_DEFSYMBOL, A_DEFFLOAT, 0);
}
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