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/* Copyright (c) 1997-2001 Miller Puckette and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
#include "d_math.h"
typedef struct powtodb_tilde
{
t_object x_obj;
t_float x_f;
} t_powtodb_tilde;
t_class *powtodb_tilde_class;
static void *powtodb_tilde_new(void)
{
t_powtodb_tilde *x = (t_powtodb_tilde *)pd_new(powtodb_tilde_class);
outlet_new(&x->x_obj, gensym("signal"));
x->x_f = 0;
return (x);
}
static t_int *powtodb_tilde_perform(t_int *w)
{
t_sample *in = *(t_sample **)(w+1), *out = *(t_sample **)(w+2);
t_int n = *(t_int *)(w+3);
for (; n--; in++, out++)
{
t_sample f = *in;
if (f <= 0) *out = 0;
else
{
t_sample g = 100 + 10./LOGTEN * log(f);
*out = (g < 0 ? 0 : g);
}
}
return (w + 4);
}
static void powtodb_tilde_dsp(t_powtodb_tilde *x, t_signal **sp)
{
dsp_add(powtodb_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
}
void powtodb_tilde_setup(void)
{
powtodb_tilde_class = class_new(gensym("powtodb~"), (t_newmethod)powtodb_tilde_new, 0,
sizeof(t_powtodb_tilde), 0, 0);
CLASS_MAINSIGNALIN(powtodb_tilde_class, t_powtodb_tilde, x_f);
class_addmethod(powtodb_tilde_class, (t_method)powtodb_tilde_dsp, gensym("dsp"), 0);
}
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