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

   1 #ifdef ROCKBOX
   2 #include "plugin.h"
   3 #include "../../pdbox.h"
   4 #endif
   5
   6 #include "../src/m_pd.h"
   7 #include <../src/m_fixed.h>
   8
   9 #define LOGTEN 2.302585092994
  10
  11 typedef struct dbtopow_tilde
  12 {
  13     t_object x_obj;
  14     float x_f;
  15 } t_dbtopow_tilde;
  16
  17 t_class *dbtopow_tilde_class;
  18
  19 static void *dbtopow_tilde_new(void)
  20 {
  21     t_dbtopow_tilde *x = (t_dbtopow_tilde *)pd_new(dbtopow_tilde_class);
  22     outlet_new(&x->x_obj, gensym("signal"));
  23     x->x_f = 0;
  24     return (x);
  25 }
  26
  27 static t_int *dbtopow_tilde_perform(t_int *w)
  28 {
  29     float *in = *(t_float **)(w+1), *out = *(t_float **)(w+2);
  30     t_int n = *(t_int *)(w+3);
  31     for (; n--; in++, out++)
  32     {
  33         float f = *in;
  34         if (f <= 0) *out = 0;
  35         else
  36         {
  37             if (f > 870)
  38                 f = 870;
  39             *out = exp((LOGTEN * 0.1) * (f-100.));
  40         }
  41     }
  42     return (w + 4);
  43 }
  44
  45 static void dbtopow_tilde_dsp(t_dbtopow_tilde *x, t_signal **sp)
  46 {
  47 #ifdef ROCKBOX
  48     (void) x;
  49 #endif
  50     post("warning: %s not usable yet",__FUNCTION__);
  51     dsp_add(dbtopow_tilde_perform, 3, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
  52 }
  53
  54 void dbtopow_tilde_setup(void)
  55 {
  56     dbtopow_tilde_class = class_new(gensym("dbtopow~"), (t_newmethod)dbtopow_tilde_new, 0,
  57         sizeof(t_dbtopow_tilde), 0, 0);
  58     CLASS_MAINSIGNALIN(dbtopow_tilde_class, t_dbtopow_tilde, x_f);
  59     class_addmethod(dbtopow_tilde_class, (t_method)dbtopow_tilde_dsp, gensym("dsp"), 0);
  60 }
  61