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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 "m_pd.h"
#include "shared.h"
#include "sickle/sic.h"
#define TRAIN_DEFPERIOD 1000
#define TRAIN_DEFWIDTH 0.5
#define TRAIN_DEFOFFSET 0
typedef struct _train
{
t_sic x_sic;
int x_on;
double x_phase;
float x_rcpksr;
t_outlet *x_bangout;
t_clock *x_clock;
} t_train;
static t_class *train_class;
static void train_tick(t_train *x)
{
outlet_bang(x->x_bangout);
}
static t_int *train_perform(t_int *w)
{
t_train *x = (t_train *)(w[1]);
int nblock = (int)(w[2]);
t_float *in1 = (t_float *)(w[3]);
t_float *in2 = (t_float *)(w[4]);
t_float *in3 = (t_float *)(w[5]);
t_float *out = (t_float *)(w[6]);
float rcpksr = x->x_rcpksr;
double ph = x->x_phase;
double tfph = ph + SHARED_UNITBIT32;
t_shared_wrappy wrappy;
int32 normhipart;
int on = x->x_on;
int edge = 0;
wrappy.w_d = SHARED_UNITBIT32;
normhipart = wrappy.w_i[SHARED_HIOFFSET];
while (nblock--)
{
double onph, offph;
float period = *in1++;
wrappy.w_d = *in3++ + SHARED_UNITBIT32;
wrappy.w_i[SHARED_HIOFFSET] = normhipart;
onph = wrappy.w_d - SHARED_UNITBIT32;
wrappy.w_d = onph + *in2++ + SHARED_UNITBIT32;
wrappy.w_i[SHARED_HIOFFSET] = normhipart;
offph = wrappy.w_d - SHARED_UNITBIT32;
if (offph > onph ? ph < offph && ph >= onph : ph < offph || ph >= onph)
{
if (!on) on = edge = 1;
*out++ = 1.;
}
else
{
on = 0;
*out++ = 0.;
}
if (period > rcpksr) /* LATER rethink */
tfph += rcpksr / period; /* LATER revisit (profiling?) */
wrappy.w_d = tfph;
wrappy.w_i[SHARED_HIOFFSET] = normhipart;
ph = wrappy.w_d - SHARED_UNITBIT32;
}
x->x_phase = ph;
x->x_on = on;
if (edge) clock_delay(x->x_clock, 0);
return (w + 7);
}
static void train_dsp(t_train *x, t_signal **sp)
{
x->x_rcpksr = 1000. / sp[0]->s_sr;
dsp_add(train_perform, 6, x, sp[0]->s_n,
sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec, sp[3]->s_vec);
}
static void train_free(t_train *x)
{
if (x->x_clock) clock_free(x->x_clock);
}
static void *train_new(t_symbol *s, int ac, t_atom *av)
{
t_train *x = (t_train *)pd_new(train_class);
x->x_on = 0;
x->x_phase = 0;
sic_inlet((t_sic *)x, 0, TRAIN_DEFPERIOD, 0, ac, av);
sic_inlet((t_sic *)x, 1, TRAIN_DEFWIDTH, 1, ac, av);
sic_inlet((t_sic *)x, 2, TRAIN_DEFOFFSET, 2, ac, av);
outlet_new((t_object *)x, &s_signal);
x->x_bangout = outlet_new((t_object *)x, &s_bang);
x->x_clock = clock_new(x, (t_method)train_tick);
return (x);
}
void train_tilde_setup(void)
{
train_class = class_new(gensym("train~"),
(t_newmethod)train_new,
(t_method)train_free,
sizeof(t_train), 0, A_GIMME, 0);
sic_setup(train_class, train_dsp, SIC_FLOATTOSIGNAL);
}
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