quicktime/matrix.c

   1 #include "funcprotos.h"
   2 #include "quicktime.h"
   3
   4
   5
   6
   7 void quicktime_matrix_init(quicktime_matrix_t *matrix)
   8 {
   9         int i;
  10         for(i = 0; i < 9; i++) matrix->values[i] = 0;
  11         matrix->values[0] = matrix->values[4] = 1;
  12         matrix->values[8] = 16384;
  13 }
  14
  15 void quicktime_matrix_delete(quicktime_matrix_t *matrix)
  16 {
  17 }
  18
  19 void quicktime_read_matrix(quicktime_t *file, quicktime_matrix_t *matrix)
  20 {
  21         int i = 0;
  22         for(i = 0; i < 9; i++)
  23         {
  24                 matrix->values[i] = quicktime_read_fixed32(file);
  25         }
  26 }
  27
  28 void quicktime_matrix_dump(quicktime_matrix_t *matrix)
  29 {
  30         int i;
  31         printf("   matrix");
  32         for(i = 0; i < 9; i++) printf(" %f", matrix->values[i]);
  33         printf("\n");
  34 }
  35
  36 void quicktime_write_matrix(quicktime_t *file, quicktime_matrix_t *matrix)
  37 {
  38         int i;
  39         for(i = 0; i < 9; i++)
  40         {
  41                 quicktime_write_fixed32(file, matrix->values[i]);
  42         }
  43 }