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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 _peakamp
{
t_sic x_sic;
t_float x_value;
int x_nwait;
int x_nleft;
int x_precount;
float x_waittime;
float x_ksr;
t_clock *x_clock;
} t_peakamp;
static t_class *peakamp_class;
static void peakamp_tick(t_peakamp *x)
{
outlet_float(((t_object *)x)->ob_outlet, x->x_value);
x->x_value = 0;
if ((x->x_nleft = x->x_nwait - x->x_precount) < 0) /* CHECKME */
x->x_nleft = 0;
}
static void peakamp_bang(t_peakamp *x)
{
peakamp_tick(x); /* CHECKME */
}
static void peakamp_ft1(t_peakamp *x, t_floatarg f)
{
if ((x->x_waittime = f) < 0.)
x->x_waittime = 0.;
if ((x->x_nwait = (int)(x->x_waittime * x->x_ksr)) < 0)
x->x_nwait = 0;
}
static t_int *peakamp_perform(t_int *w)
{
t_peakamp *x = (t_peakamp *)(w[1]);
int nblock = (int)(w[2]);
t_float *in = (t_float *)(w[3]);
t_float value = x->x_value;
if (x->x_nwait)
{
if (x->x_nleft < nblock)
{
clock_delay(x->x_clock, 0);
x->x_precount = nblock - x->x_nleft;
x->x_nleft = 0; /* LATER rethink */
}
else x->x_nleft -= nblock;
}
while (nblock--)
{
t_float f = *in++;
if (f > value)
value = f;
else if (f < -value)
value = -f;
}
x->x_value = value;
return (w + 4);
}
static void peakamp_dsp(t_peakamp *x, t_signal **sp)
{
x->x_ksr = sp[0]->s_sr * 0.001;
x->x_nwait = (int)(x->x_waittime * x->x_ksr);
dsp_add(peakamp_perform, 3, x, sp[0]->s_n, sp[0]->s_vec);
}
static void peakamp_free(t_peakamp *x)
{
if (x->x_clock) clock_free(x->x_clock);
}
static void *peakamp_new(t_floatarg f)
{
t_peakamp *x = (t_peakamp *)pd_new(peakamp_class);
x->x_value = 0.;
x->x_nleft = 0;
x->x_ksr = sys_getsr() * 0.001;
peakamp_ft1(x, f);
inlet_new((t_object *)x, (t_pd *)x, &s_float, gensym("ft1"));
outlet_new((t_object *)x, &s_float);
x->x_clock = clock_new(x, (t_method)peakamp_tick);
return (x);
}
void peakamp_tilde_setup(void)
{
peakamp_class = class_new(gensym("peakamp~"),
(t_newmethod)peakamp_new,
(t_method)peakamp_free,
sizeof(t_peakamp), 0,
A_DEFFLOAT, 0);
sic_setup(peakamp_class, peakamp_dsp, SIC_FLOATTOSIGNAL);
class_addbang(peakamp_class, peakamp_bang);
class_addmethod(peakamp_class, (t_method)peakamp_ft1,
gensym("ft1"), A_FLOAT, 0);
}
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