66cc643402
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26551 a1c6a512-1295-4272-9138-f99709370657
109 lines
2.5 KiB
C
109 lines
2.5 KiB
C
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#include "../src/m_pd.h"
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#include "../src/m_fixed.h"
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static t_class *tabread4_tilde_class;
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typedef struct _tabread4_tilde
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{
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t_object x_obj;
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int x_npoints;
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t_sample *x_vec;
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t_symbol *x_arrayname;
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float x_f;
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} t_tabread4_tilde;
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static void *tabread4_tilde_new(t_symbol *s)
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{
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t_tabread4_tilde *x = (t_tabread4_tilde *)pd_new(tabread4_tilde_class);
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x->x_arrayname = s;
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x->x_vec = 0;
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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 *tabread4_tilde_perform(t_int *w)
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{
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t_tabread4_tilde *x = (t_tabread4_tilde *)(w[1]);
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t_sample *in = (t_sample *)(w[2]);
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t_sample *out = (t_sample *)(w[3]);
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int n = (int)(w[4]);
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int maxindex;
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t_sample *buf = x->x_vec, *fp;
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int i;
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maxindex = x->x_npoints - 3;
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if (!buf) goto zero;
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for (i = 0; i < n; i++)
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{
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t_time findex = ((long long) mult((*in++),ftofix(44.1)));
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int index = fixtoi(findex);
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t_sample frac;
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// post("%d: index %d f %lld",index,findex,*in);
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if (index < 1)
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index = 1, frac = 0;
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else if (index > maxindex)
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index = maxindex, frac = 1;
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else frac = findex - itofix(index);
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fp = buf + index;
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*out++ = fp[0] + mult(frac,fp[1]-fp[0]);
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}
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return (w+5);
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zero:
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while (n--) *out++ = 0;
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return (w+5);
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}
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void tabread4_tilde_set(t_tabread4_tilde *x, t_symbol *s)
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{
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t_garray *a;
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x->x_arrayname = s;
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if (!(a = (t_garray *)pd_findbyclass(x->x_arrayname, garray_class)))
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{
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if (*s->s_name)
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error("tabread4~: %s: no such array", x->x_arrayname->s_name);
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x->x_vec = 0;
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}
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else if (!garray_getfloatarray(a, &x->x_npoints, &x->x_vec))
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{
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error("%s: bad template for tabread4~", x->x_arrayname->s_name);
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x->x_vec = 0;
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}
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else garray_usedindsp(a);
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}
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static void tabread4_tilde_dsp(t_tabread4_tilde *x, t_signal **sp)
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{
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tabread4_tilde_set(x, x->x_arrayname);
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dsp_add(tabread4_tilde_perform, 4, x,
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sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
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}
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static void tabread4_tilde_free(t_tabread4_tilde *x)
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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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}
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void tabread4_tilde_setup(void)
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{
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tabread4_tilde_class = class_new(gensym("tabread4~"),
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(t_newmethod)tabread4_tilde_new, (t_method)tabread4_tilde_free,
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sizeof(t_tabread4_tilde), 0, A_DEFSYM, 0);
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CLASS_MAINSIGNALIN(tabread4_tilde_class, t_tabread4_tilde, x_f);
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class_addmethod(tabread4_tilde_class, (t_method)tabread4_tilde_dsp,
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gensym("dsp"), 0);
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class_addmethod(tabread4_tilde_class, (t_method)tabread4_tilde_set,
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gensym("set"), A_SYMBOL, 0);
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}
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