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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 "sickle/sic.h"
typedef struct _avg
{
t_sic x_sic;
float x_count;
float x_accum;
} t_avg;
static t_class *avg_class;
static void avg_bang(t_avg *x)
{
outlet_float(((t_object *)x)->ob_outlet,
(x->x_count ? x->x_accum / x->x_count : 0));
x->x_count = 0;
x->x_accum = 0;
}
static t_int *avg_perform(t_int *w)
{
t_avg *x = (t_avg *)(w[1]);
int nblock = (int)(w[2]);
t_float *in = (t_float *)(w[3]);
float accum = 0;
x->x_count += nblock; /* LATER consider blockcount++ */
while (nblock--)
{
float f = *in++;
accum += (f >= 0 ? f : -f);
}
x->x_accum += accum;
return (w + 4);
}
static void avg_dsp(t_avg *x, t_signal **sp)
{
dsp_add(avg_perform, 3, x, sp[0]->s_n, sp[0]->s_vec);
}
static void *avg_new(void)
{
t_avg *x = (t_avg *)pd_new(avg_class);
outlet_new((t_object *)x, &s_float);
x->x_count = 0;
x->x_accum = 0;
return (x);
}
void avg_tilde_setup(void)
{
avg_class = class_new(gensym("avg~"),
(t_newmethod)avg_new, 0,
sizeof(t_avg), 0, 0);
sic_setup(avg_class, avg_dsp, SIC_FLOATTOSIGNAL);
class_addbang(avg_class, avg_bang);
}
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