gst/goom/goom_tools.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

#include "goom_tools.h"
#include <stdlib.h>

GoomRandom *
goom_random_init (int i)
{
  GoomRandom *grandom = (GoomRandom *) malloc (sizeof (GoomRandom));

  srand (i);
  grandom->pos = 1;
  goom_random_update_array (grandom, GOOM_NB_RAND);
  return grandom;
}

void
goom_random_free (GoomRandom * grandom)
{
  free (grandom);
}

void
goom_random_update_array (GoomRandom * grandom, int numberOfValuesToChange)
{
  while (numberOfValuesToChange > 0) {
#if RAND_MAX < 0x10000
    grandom->array[grandom->pos++] = ((rand () << 16) + rand ()) / 127;
#else
    grandom->array[grandom->pos++] = rand () / 127;
#endif
    numberOfValuesToChange--;
  }
}