quicktime/elst.c

   1 #include "funcprotos.h"
   2 #include "quicktime.h"
   3
   4
   5 void quicktime_elst_table_init(quicktime_elst_table_t *table)
   6 {
   7         table->duration = 0;
   8         table->time = 0;
   9         table->rate = 1;
  10 }
  11
  12 void quicktime_elst_table_delete(quicktime_elst_table_t *table)
  13 {
  14 }
  15
  16 void quicktime_read_elst_table(quicktime_t *file, quicktime_elst_table_t *table)
  17 {
  18         table->duration = quicktime_read_int32(file);
  19         table->time = quicktime_read_int32(file);
  20         table->rate = quicktime_read_fixed32(file);
  21 }
  22
  23 void quicktime_write_elst_table(quicktime_t *file, quicktime_elst_table_t *table, long duration)
  24 {
  25         table->duration = duration;
  26         quicktime_write_int32(file, table->duration);
  27         quicktime_write_int32(file, table->time);
  28         quicktime_write_fixed32(file, table->rate);
  29 }
  30
  31 void quicktime_elst_table_dump(quicktime_elst_table_t *table)
  32 {
  33         printf("    edit list table\n");
  34         printf("     duration %ld\n", table->duration);
  35         printf("     time %ld\n", table->time);
  36         printf("     rate %f\n", table->rate);
  37 }
  38
  39 void quicktime_elst_init(quicktime_elst_t *elst)
  40 {
  41         elst->version = 0;
  42         elst->flags = 0;
  43         elst->total_entries = 0;
  44         elst->table = 0;
  45 }
  46
  47 void quicktime_elst_init_all(quicktime_elst_t *elst)
  48 {
  49         if(!elst->total_entries)
  50         {
  51                 elst->total_entries = 1;
  52                 elst->table = (quicktime_elst_table_t*)calloc(1, sizeof(quicktime_elst_table_t) * elst->total_entries);
  53                 quicktime_elst_table_init(&(elst->table[0]));
  54         }
  55 }
  56
  57 void quicktime_elst_delete(quicktime_elst_t *elst)
  58 {
  59         int i;
  60         if(elst->total_entries)
  61         {
  62                 for(i = 0; i < elst->total_entries; i++)
  63                         quicktime_elst_table_delete(&(elst->table[i]));
  64                 free(elst->table);
  65         }
  66         elst->total_entries = 0;
  67 }
  68
  69 void quicktime_elst_dump(quicktime_elst_t *elst)
  70 {
  71         int i;
  72         printf("   edit list (elst)\n");
  73         printf("    version %d\n", elst->version);
  74         printf("    flags %d\n", elst->flags);
  75         printf("    total_entries %d\n", elst->total_entries);
  76
  77         for(i = 0; i < elst->total_entries; i++)
  78         {
  79                 quicktime_elst_table_dump(&(elst->table[i]));
  80         }
  81 }
  82
  83 void quicktime_read_elst(quicktime_t *file, quicktime_elst_t *elst)
  84 {
  85         int i;
  86         quicktime_atom_t leaf_atom;
  87
  88         elst->version = quicktime_read_char(file);
  89         elst->flags = quicktime_read_int24(file);
  90         elst->total_entries = quicktime_read_int32(file);
  91         elst->table = (quicktime_elst_table_t*)calloc(1, sizeof(quicktime_elst_table_t) * elst->total_entries);
  92         for(i = 0; i < elst->total_entries; i++)
  93         {
  94                 quicktime_elst_table_init(&(elst->table[i]));
  95                 quicktime_read_elst_table(file, &(elst->table[i]));
  96         }
  97 }
  98
  99 void quicktime_write_elst(quicktime_t *file, quicktime_elst_t *elst, long duration)
 100 {
 101         quicktime_atom_t atom;
 102         int i;
 103         quicktime_atom_write_header(file, &atom, "elst");
 104
 105         quicktime_write_char(file, elst->version);
 106         quicktime_write_int24(file, elst->flags);
 107         quicktime_write_int32(file, elst->total_entries);
 108         for(i = 0; i < elst->total_entries; i++)
 109         {
 110                 quicktime_write_elst_table(file, elst->table, duration);
 111         }
 112
 113         quicktime_atom_write_footer(file, &atom);
 114 }