526b5580da
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21070 a1c6a512-1295-4272-9138-f99709370657
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
#include <m_pd.h>
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#include <m_fixed.h>
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typedef struct mtof_tilde
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{
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t_object x_obj;
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float x_f;
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} t_mtof_tilde;
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t_class *mtof_tilde_class;
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static void *mtof_tilde_new(void)
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{
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t_mtof_tilde *x = (t_mtof_tilde *)pd_new(mtof_tilde_class);
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outlet_new(&x->x_obj, gensym("signal"));
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x->x_f = 0;
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return (x);
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}
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static t_int *mtof_tilde_perform(t_int *w)
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{
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t_sample *in = *(t_sample **)(w+1), *out = *(t_sample **)(w+2);
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t_int n = *(t_int *)(w+3);
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for (; n--; in++, out++)
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{
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t_sample f = *in;
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if (f <= ftofix(-1500.)) *out = 0;
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else
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{
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if (f > ftofix(1499.)) f = ftofix(1499.);
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*out = ftofix(8.17579891564 * exp(.0577622650 * fixtof(f)));
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}
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}
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return (w + 4);
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}
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static void mtof_tilde_dsp(t_mtof_tilde *x, t_signal **sp)
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{
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post("warning: %s not usable yet",__FUNCTION__);
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dsp_add(mtof_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
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}
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void mtof_tilde_setup(void)
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{
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mtof_tilde_class = class_new(gensym("mtof~"), (t_newmethod)mtof_tilde_new, 0,
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sizeof(t_mtof_tilde), 0, 0);
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CLASS_MAINSIGNALIN(mtof_tilde_class, t_mtof_tilde, x_f);
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class_addmethod(mtof_tilde_class, (t_method)mtof_tilde_dsp, gensym("dsp"), 0);
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}
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