quicktime/udta.c

   1 #include "funcprotos.h"
   2 #include "quicktime.h"
   3
   4 #define DEFAULT_INFO "Made with Quicktime for Linux"
   5
   6 int quicktime_udta_init(quicktime_udta_t *udta)
   7 {
   8         udta->copyright = 0;
   9         udta->copyright_len = 0;
  10         udta->name = 0;
  11         udta->name_len = 0;
  12
  13         udta->info = malloc(strlen(DEFAULT_INFO) + 1);
  14         udta->info_len = strlen(DEFAULT_INFO);
  15         sprintf(udta->info, DEFAULT_INFO);
  16         return 0;
  17 }
  18
  19 int quicktime_udta_delete(quicktime_udta_t *udta)
  20 {
  21         if(udta->copyright_len)
  22         {
  23                 free(udta->copyright);
  24         }
  25         if(udta->name_len)
  26         {
  27                 free(udta->name);
  28         }
  29         if(udta->info_len)
  30         {
  31                 free(udta->info);
  32         }
  33 //      quicktime_udta_init(udta);
  34         return 0;
  35 }
  36
  37 void quicktime_udta_dump(quicktime_udta_t *udta)
  38 {
  39         printf(" user data (udta)\n");
  40         if(udta->copyright_len) printf("  copyright -> %s\n", udta->copyright);
  41         if(udta->name_len) printf("  name -> %s\n", udta->name);
  42         if(udta->info_len) printf("  info -> %s\n", udta->info);
  43 }
  44
  45 int quicktime_read_udta(quicktime_t *file, quicktime_udta_t *udta, quicktime_atom_t *udta_atom)
  46 {
  47         quicktime_atom_t leaf_atom;
  48         int result = 0;
  49
  50         do
  51         {
  52                 quicktime_atom_read_header(file, &leaf_atom);
  53
  54                 if(quicktime_atom_is(&leaf_atom, "©cpy"))
  55                 {
  56                         result += quicktime_read_udta_string(file, &(udta->copyright), &(udta->copyright_len));
  57                 }
  58                 else
  59                 if(quicktime_atom_is(&leaf_atom, "©nam"))
  60                 {
  61                         result += quicktime_read_udta_string(file, &(udta->name), &(udta->name_len));
  62                 }
  63                 else
  64                 if(quicktime_atom_is(&leaf_atom, "©inf"))
  65                 {
  66                         result += quicktime_read_udta_string(file, &(udta->info), &(udta->info_len));
  67                 }
  68                 else
  69                 quicktime_atom_skip(file, &leaf_atom);
  70         }while(quicktime_position(file) < udta_atom->end);
  71
  72         return result;
  73 }
  74
  75 void quicktime_write_udta(quicktime_t *file, quicktime_udta_t *udta)
  76 {
  77         quicktime_atom_t atom, subatom;
  78         quicktime_atom_write_header(file, &atom, "udta");
  79
  80         if(udta->copyright_len)
  81         {
  82                 quicktime_atom_write_header(file, &subatom, "©cpy");
  83                 quicktime_write_udta_string(file, udta->copyright, udta->copyright_len);
  84                 quicktime_atom_write_footer(file, &subatom);
  85         }
  86
  87         if(udta->name_len)
  88         {
  89                 quicktime_atom_write_header(file, &subatom, "©nam");
  90                 quicktime_write_udta_string(file, udta->name, udta->name_len);
  91                 quicktime_atom_write_footer(file, &subatom);
  92         }
  93
  94         if(udta->info_len)
  95         {
  96                 quicktime_atom_write_header(file, &subatom, "©inf");
  97                 quicktime_write_udta_string(file, udta->info, udta->info_len);
  98                 quicktime_atom_write_footer(file, &subatom);
  99         }
 100
 101         quicktime_atom_write_footer(file, &atom);
 102 }
 103
 104 int quicktime_read_udta_string(quicktime_t *file, char **string, int *size)
 105 {
 106         int result;
 107
 108         if(*size) free(*string);
 109         *size = quicktime_read_int16(file);  /* Size of string */
 110         quicktime_read_int16(file);  /* Discard language code */
 111         *string = malloc(*size + 1);
 112         result = quicktime_read_data(file, *string, *size);
 113         (*string)[*size] = 0;
 114         return !result;
 115 }
 116
 117 int quicktime_write_udta_string(quicktime_t *file, char *string, int size)
 118 {
 119         int new_size = strlen(string);
 120         int result;
 121
 122         quicktime_write_int16(file, new_size);    /* String size */
 123         quicktime_write_int16(file, 0);    /* Language code */
 124         result = quicktime_write_data(file, string, new_size);
 125         return !result;
 126 }
 127
 128 int quicktime_set_udta_string(char **string, int *size, char *new_string)
 129 {
 130         if(*size) free(*string);
 131         *size = strlen(new_string) + 1;
 132         *string = malloc(*size);
 133         strcpy(*string, new_string);
 134         return 0;
 135 }