54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
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#include <m_pd.h>
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/* ---------- tabread: control, non-interpolating ------------------------ */
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static t_class *tabread_class;
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typedef struct _tabread
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{
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t_object x_obj;
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t_symbol *x_arrayname;
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} t_tabread;
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static void tabread_float(t_tabread *x, t_float f)
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{
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t_garray *a;
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int npoints;
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t_sample *vec;
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if (!(a = (t_garray *)pd_findbyclass(x->x_arrayname, garray_class)))
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pd_error(x, "%s: no such array", x->x_arrayname->s_name);
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else if (!garray_getfloatarray(a, &npoints, &vec))
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pd_error(x, "%s: bad template for tabread", x->x_arrayname->s_name);
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else
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{
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int n = f;
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if (n < 0) n = 0;
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else if (n >= npoints) n = npoints - 1;
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outlet_float(x->x_obj.ob_outlet, (npoints ? fixtof(vec[n]) : 0));
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}
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}
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static void tabread_set(t_tabread *x, t_symbol *s)
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{
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x->x_arrayname = s;
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}
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static void *tabread_new(t_symbol *s)
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{
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t_tabread *x = (t_tabread *)pd_new(tabread_class);
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x->x_arrayname = s;
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outlet_new(&x->x_obj, &s_float);
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return (x);
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}
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void tabread_setup(void)
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{
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tabread_class = class_new(gensym("tabread"), (t_newmethod)tabread_new,
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0, sizeof(t_tabread), 0, A_DEFSYM, 0);
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class_addfloat(tabread_class, (t_method)tabread_float);
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class_addmethod(tabread_class, (t_method)tabread_set, gensym("set"),
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A_SYMBOL, 0);
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}
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