apps/plugins/pdbox/PDa/intern/tabread~.c

   1 #ifndef ROCKBOX
   2 #define FIXEDPOINT
   3 #endif
   4
   5 #include "../src/m_pd.h"
   6 #include <../src/m_fixed.h>
   7
   8 static t_class *tabread_tilde_class;
   9
  10 typedef struct _tabread_tilde
  11 {
  12     t_object x_obj;
  13     int x_npoints;
  14     t_sample *x_vec;
  15     t_symbol *x_arrayname;
  16     float x_f;
  17 } t_tabread_tilde;
  18
  19 static void *tabread_tilde_new(t_symbol *s)
  20 {
  21     t_tabread_tilde *x = (t_tabread_tilde *)pd_new(tabread_tilde_class);
  22     x->x_arrayname = s;
  23     x->x_vec = 0;
  24     outlet_new(&x->x_obj, gensym("signal"));
  25     x->x_f = 0;
  26     return (x);
  27 }
  28
  29 static t_int *tabread_tilde_perform(t_int *w)
  30 {
  31     t_tabread_tilde *x = (t_tabread_tilde *)(w[1]);
  32     t_sample *in = (t_sample *)(w[2]);
  33     t_sample *out = (t_sample *)(w[3]);
  34     int n = (int)(w[4]);
  35     int maxindex;
  36 #ifdef ROCKBOX
  37     t_sample *buf = x->x_vec;
  38 #else
  39     t_sample *buf = x->x_vec, *fp;
  40 #endif
  41     int i;
  42
  43     maxindex = x->x_npoints - 1;
  44     if (!buf) goto zero;
  45
  46     for (i = 0; i < n; i++)
  47     {
  48         int index = ((long long) mult((*in++),ftofix(44.1)) >> fix1);
  49         if (index < 0)
  50             index = 0;
  51         else if (index > maxindex)
  52             index = maxindex;
  53         *out++ = buf[index];
  54     }
  55     return (w+5);
  56  zero:
  57     while (n--) *out++ = 0;
  58
  59     return (w+5);
  60 }
  61
  62 void tabread_tilde_set(t_tabread_tilde *x, t_symbol *s)
  63 {
  64     t_garray *a;
  65
  66     x->x_arrayname = s;
  67     if (!(a = (t_garray *)pd_findbyclass(x->x_arrayname, garray_class)))
  68     {
  69         if (*s->s_name)
  70             error("tabread~: %s: no such array", x->x_arrayname->s_name);
  71         x->x_vec = 0;
  72     }
  73     else if (!garray_getfloatarray(a, &x->x_npoints, &x->x_vec))
  74     {
  75         error("%s: bad template for tabread~", x->x_arrayname->s_name);
  76         x->x_vec = 0;
  77     }
  78     else garray_usedindsp(a);
  79 }
  80
  81 static void tabread_tilde_dsp(t_tabread_tilde *x, t_signal **sp)
  82 {
  83     tabread_tilde_set(x, x->x_arrayname);
  84
  85     dsp_add(tabread_tilde_perform, 4, x,
  86         sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
  87
  88 }
  89
  90 static void tabread_tilde_free(t_tabread_tilde *x)
  91 {
  92 #ifdef ROCKBOX
  93     (void) x;
  94 #endif
  95 }
  96
  97 void tabread_tilde_setup(void)
  98 {
  99     tabread_tilde_class = class_new(gensym("tabread~"),
 100         (t_newmethod)tabread_tilde_new, (t_method)tabread_tilde_free,
 101         sizeof(t_tabread_tilde), 0, A_DEFSYM, 0);
 102     CLASS_MAINSIGNALIN(tabread_tilde_class, t_tabread_tilde, x_f);
 103     class_addmethod(tabread_tilde_class, (t_method)tabread_tilde_dsp,
 104         gensym("dsp"), 0);
 105     class_addmethod(tabread_tilde_class, (t_method)tabread_tilde_set,
 106         gensym("set"), A_SYMBOL, 0);
 107 }
 108