quicktime/ctab.c

   1 #include <stdio.h>
   2 #include "funcprotos.h"
   3 #include "quicktime.h"
   4
   5 int quicktime_ctab_init(quicktime_ctab_t *ctab)
   6 {
   7         ctab->seed = 0;
   8         ctab->flags = 0;
   9         ctab->size = 0;
  10         ctab->alpha = 0;
  11         ctab->red = 0;
  12         ctab->green = 0;
  13         ctab->blue = 0;
  14         return 0;
  15 }
  16
  17 int quicktime_ctab_delete(quicktime_ctab_t *ctab)
  18 {
  19         if(ctab->alpha) free(ctab->alpha);
  20         if(ctab->red) free(ctab->red);
  21         if(ctab->green) free(ctab->green);
  22         if(ctab->blue) free(ctab->blue);
  23         return 0;
  24 }
  25
  26 void quicktime_ctab_dump(quicktime_ctab_t *ctab)
  27 {
  28         int i;
  29         printf(" color table\n");
  30         printf("  seed %ld\n", ctab->seed);
  31         printf("  flags %ld\n", ctab->flags);
  32         printf("  size %ld\n", ctab->size);
  33         printf("  colors ");
  34         for(i = 0; i < ctab->size; i++)
  35         {
  36                 printf("[%d %d %d %d]", ctab->red[i], ctab->green[i], ctab->blue[i], ctab->alpha[i]);
  37         }
  38         printf("\n");
  39 }
  40
  41 int quicktime_read_ctab(quicktime_t *file, quicktime_ctab_t *ctab)
  42 {
  43         int i;
  44
  45         ctab->seed = quicktime_read_int32(file);
  46         ctab->flags = quicktime_read_int16(file);
  47         ctab->size = quicktime_read_int16(file) + 1;
  48         ctab->alpha = malloc(sizeof(int16_t) * ctab->size);
  49         ctab->red = malloc(sizeof(int16_t) * ctab->size);
  50         ctab->green = malloc(sizeof(int16_t) * ctab->size);
  51         ctab->blue = malloc(sizeof(int16_t) * ctab->size);
  52
  53         for(i = 0; i < ctab->size; i++)
  54         {
  55                 ctab->alpha[i] = quicktime_read_int16(file);
  56                 ctab->red[i] = quicktime_read_int16(file);
  57                 ctab->green[i] = quicktime_read_int16(file);
  58                 ctab->blue[i] = quicktime_read_int16(file);
  59         }
  60
  61         return 0;
  62 }