quicktime/avi_movi.c

   1 #include "funcprotos.h"
   2 #include "quicktime.h"
   3
   4 void quicktime_delete_movi(quicktime_t *file, quicktime_movi_t *movi)
   5 {
   6         int i;
   7         for(i = 0; i < file->moov.total_tracks; i++)
   8         {
   9                 if(movi->ix[i]) quicktime_delete_ix(movi->ix[i]);
  10         }
  11 }
  12
  13 void quicktime_init_movi(quicktime_t *file, quicktime_riff_t *riff)
  14 {
  15         int i;
  16         quicktime_riff_t *first_riff = file->riff[0];
  17         quicktime_movi_t *movi = &riff->movi;
  18
  19         quicktime_atom_write_header(file, &movi->atom, "LIST");
  20         quicktime_write_char32(file, "movi");
  21
  22 // Initialize partial indexes and relative positions for ix entries
  23         for(i = 0; i < file->moov.total_tracks; i++)
  24         {
  25                 quicktime_strl_t *strl = first_riff->hdrl.strl[i];
  26                 quicktime_trak_t *trak = file->moov.trak[i];
  27                 quicktime_ix_t *ix =
  28                         movi->ix[i] =
  29                         quicktime_new_ix(file, trak, strl);
  30         }
  31 }
  32
  33 void quicktime_read_movi(quicktime_t *file,
  34         quicktime_atom_t *parent_atom,
  35         quicktime_movi_t *movi)
  36 {
  37         movi->atom.size = parent_atom->size;
  38 // Relative to start of the movi string
  39         movi->atom.start = parent_atom->start + 8;
  40         quicktime_atom_skip(file, parent_atom);
  41 }
  42
  43 void quicktime_finalize_movi(quicktime_t *file, quicktime_movi_t *movi)
  44 {
  45         int i;
  46 // Pad movi to get an even number of bytes
  47         char temp[2] = { 0, 0 };
  48         quicktime_write_data(file,
  49                 temp,
  50                 (quicktime_position(file) - movi->atom.start) % 2);
  51
  52         for(i = 0; i < file->moov.total_tracks; i++)
  53         {
  54                 quicktime_ix_t *ix = movi->ix[i];
  55 // Write partial indexes and update super index
  56                 quicktime_write_ix(file, ix, i);
  57         }
  58
  59         quicktime_atom_write_footer(file, &movi->atom);
  60 }
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