ca755f767c
Change pdbox include paths to handle this git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24916 a1c6a512-1295-4272-9138-f99709370657
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
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#include "../src/m_pd.h"
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#include <../src/m_fixed.h>
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#include "cos_table.h"
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/* ------------------------ cos~ ----------------------------- */
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#define FRAC ((1<<(fix1-ILOGCOSTABSIZE))-1)
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static t_class *cos_class;
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typedef struct _cos
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{
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t_object x_obj;
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float x_f;
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} t_cos;
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static void *cos_new(void)
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{
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t_cos *x = (t_cos *)pd_new(cos_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 *cos_perform(t_int *w)
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{
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t_sample *in = (t_sample *)(w[1]);
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t_sample *out = (t_sample *)(w[2]);
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int n = (int)(w[3]);
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t_sample *tab = cos_table;
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int off;
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int frac;
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unsigned int phase;
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while (n--) {
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phase = *in++;
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phase &= ((1<<fix1)-1);
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off = fixtoi((long long)phase<<ILOGCOSTABSIZE);
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frac = phase&(itofix(1)-1);
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*out = mult(*(tab + off),itofix(1) - frac) +
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mult(*(tab + off + 1),frac);
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out++;
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}
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return (w+4);
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}
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static void cos_dsp(t_cos *x, t_signal **sp)
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{
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#ifdef ROCKBOX
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(void) x;
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#endif
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dsp_add(cos_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
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}
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void cos_tilde_setup(void)
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{
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cos_class = class_new(gensym("cos~"), (t_newmethod)cos_new, 0,
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sizeof(t_cos), 0, A_DEFFLOAT, 0);
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CLASS_MAINSIGNALIN(cos_class, t_cos, x_f);
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class_addmethod(cos_class, (t_method)cos_dsp, gensym("dsp"), 0);
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class_sethelpsymbol(cos_class, gensym("osc~-help.pd"));
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}
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