testsuite/perceptual_curves.c

   1
   2 #ifdef HAVE_CONFIG_H
   3 #include "config.h"
   4 #endif
   5
   6 #include <schroedinger/schro.h>
   7 #include <schroedinger/schrowavelet.h>
   8 #include <schroedinger/schrooil.h>
   9 #include <liboil/liboil.h>
  10
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <stdlib.h>
  14 #include <math.h>
  15
  16
  17 int
  18 main (int argc, char *argv[])
  19 {
  20   int i;
  21   double ppd_max;
  22   double ppd;
  23
  24   schro_init();
  25
  26   ppd_max = 720 / (2.0*atan(0.5/3.0)*180/M_PI);
  27
  28   for(i=0;i<100;i++) {
  29     ppd = ppd_max * (i/100.0);
  30
  31     printf("%d %g %g %g %g\n",
  32         i, ppd,
  33         1.0/schro_encoder_perceptual_weight_constant (ppd),
  34         1.0/schro_encoder_perceptual_weight_moo (ppd),
  35         1.0/schro_encoder_perceptual_weight_ccir959 (ppd));
  36   }
  37
  38   return 0;
  39 }
  40