526b5580da
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21070 a1c6a512-1295-4272-9138-f99709370657
58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
#include "m_pd.h"
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static t_class *zerox_class;
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typedef struct _zerox
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{
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t_object x_obj;
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t_sample x_f;
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t_int x_zeros;
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} t_zerox;
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static t_int *zerox_perform(t_int *w)
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{
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t_zerox* x = (t_zerox*)w[1];
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t_sample *in = (t_sample *)(w[2]);
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int n = (int)(w[3]) ;
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if (*in * x->x_f < 0) x->x_zeros++;
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n--;
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while (n--)
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{
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float f = *(in++);
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x->x_zeros += f * *in < 0;
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}
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return (w+4);
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}
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static void zerox_dsp(t_zerox *x, t_signal **sp)
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{
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dsp_add(zerox_perform, 3, x, sp[0]->s_vec, sp[0]->s_n);
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}
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static void zerox_bang(t_zerox* x)
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{
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outlet_float(x->x_obj.ob_outlet,x->x_zeros);
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x->x_zeros=0;
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}
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static void *zerox_new(void)
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{
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t_zerox *x = (t_zerox *)pd_new(zerox_class);
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outlet_new(&x->x_obj, gensym("float"));
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x->x_f = 0;
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x->x_zeros=0;
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return (x);
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}
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void zerox_tilde_setup(void)
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{
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zerox_class = class_new(gensym("zerox~"), (t_newmethod)zerox_new, 0,
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sizeof(t_zerox), 0, A_DEFFLOAT, 0);
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CLASS_MAINSIGNALIN(zerox_class, t_zerox, x_f);
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class_addmethod(zerox_class, (t_method)zerox_dsp, gensym("dsp"), 0);
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class_addbang(zerox_class, (t_method)zerox_bang);
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}
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