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/* sIgpAck
* for
* pure-data
* www.weiss-archiv.de */
#include "m_pd.h"
#ifdef _MSC_VER
#pragma warning( disable : 4244 )
#pragma warning( disable : 4305 )
#endif
/* ------------------------ rectify~ ----------------------------- */
/* flips negative signal values to positive */
static t_class *rectify_tilde_class;
typedef struct _rectify_tilde
{
t_object x_obj;
t_float x_f;
} t_rectify_tilde;
static void *rectify_tilde_new(void)
{
t_rectify_tilde *x = (t_rectify_tilde *)pd_new(rectify_tilde_class);
outlet_new(&x->x_obj, gensym("signal"));
x->x_f = 0;
return (x);
}
static t_int *rectify_tilde_perform(t_int *w)
{
t_rectify_tilde *x = (t_rectify_tilde *)(w[1]);
t_sample *in = (t_sample *)(w[2]);
t_sample *out = (t_sample *)(w[3]);
int n = (int)(w[4]);
t_float f, value;
while (n--)
{
f = *in++;
if (f < 0)
value = f * -1;
else
value = f;
*out++ = value;
}
return (w+5);
}
static void rectify_tilde_dsp(t_rectify_tilde *x, t_signal **sp)
{
dsp_add(rectify_tilde_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
}
void rectify_tilde_setup(void)
{
rectify_tilde_class = class_new(gensym("rectify~"), (t_newmethod)rectify_tilde_new, 0,
sizeof(t_rectify_tilde), 0, A_DEFFLOAT, 0);
CLASS_MAINSIGNALIN(rectify_tilde_class, t_rectify_tilde, x_f);
class_addmethod(rectify_tilde_class, (t_method)rectify_tilde_dsp, gensym("dsp"), 0);
}
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