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hintudta.c
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hintudta.c
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#include "funcprotos.h"
#include "quicktime.h"
int quicktime_hint_udta_init(quicktime_hint_udta_t *hint_udta)
{
quicktime_hinf_init(&(hint_udta->hinf));
quicktime_hint_hnti_init(&(hint_udta->hnti));
return 0;
}
int quicktime_hint_udta_delete(quicktime_hint_udta_t *hint_udta)
{
quicktime_hinf_delete(&(hint_udta->hinf));
quicktime_hint_hnti_delete(&(hint_udta->hnti));
return 0;
}
int quicktime_hint_udta_dump(quicktime_hint_udta_t *hint_udta)
{
printf(" udta\n");
quicktime_hinf_dump(&hint_udta->hinf);
quicktime_hint_hnti_dump(&hint_udta->hnti);
return 0;
}
int quicktime_read_hint_udta(quicktime_t *file, quicktime_hint_udta_t *hint_udta, quicktime_atom_t *parent_atom)
{
quicktime_atom_t leaf_atom;
do {
/* udta atoms can be terminated by a 4 byte zero */
if (parent_atom->end - quicktime_position(file) < HEADER_LENGTH) {
u_char trash[HEADER_LENGTH];
int remainder = parent_atom->end - quicktime_position(file);
quicktime_read_data(file, trash, remainder);
break;
}
quicktime_atom_read_header(file, &leaf_atom);
if (quicktime_atom_is(&leaf_atom, "hinf")) {
quicktime_read_hinf(file, &(hint_udta->hinf), &leaf_atom);
} else if (quicktime_atom_is(&leaf_atom, "hnti")) {
quicktime_read_hint_hnti(file, &(hint_udta->hnti), &leaf_atom);
} else {
quicktime_atom_skip(file, &leaf_atom);
}
} while (quicktime_position(file) < parent_atom->end);
return 0;
}
int quicktime_write_hint_udta(quicktime_t *file, quicktime_hint_udta_t *hint_udta)
{
quicktime_atom_t atom;
if (hint_udta->hnti.sdp.string == NULL) {
return -1;
}
quicktime_atom_write_header(file, &atom, "udta");
quicktime_write_hinf(file, &(hint_udta->hinf));
quicktime_write_hint_hnti(file, &(hint_udta->hnti));
quicktime_atom_write_footer(file, &atom);
return 0;
}