static int _parse_index(BITSTREAM *bs, INDX_ROOT *index)
{
uint32_t index_len, i;
index_len = bs_read(bs, 32);
/* TODO: check if goes to extension data area */
if ((bs_end(bs) - bs_pos(bs))/8 < (int64_t)index_len) {
BD_DEBUG(DBG_NAV | DBG_CRIT, "index.bdmv: invalid index_len %d !\n", index_len);
return 0;
}
if (!_parse_playback_obj(bs, &index->first_play) ||
!_parse_playback_obj(bs, &index->top_menu)) {
return 0;
}
index->num_titles = bs_read(bs, 16);
if (!index->num_titles) {
BD_DEBUG(DBG_CRIT, "empty index\n");
return 0;
}
index->titles = calloc(index->num_titles, sizeof(INDX_TITLE));
if (!index->titles) {
BD_DEBUG(DBG_CRIT, "out of memory\n");
return 0;
}
if (bs_avail(bs)/(12*8) < index->num_titles) {
BD_DEBUG(DBG_HDMV|DBG_CRIT, "index.bdmv: unexpected EOF\n");
return 0;
}
for (i = 0; i < index->num_titles; i++) {
index->titles[i].object_type = bs_read(bs, 2);
index->titles[i].access_type = bs_read(bs, 2);
bs_skip(bs, 28);
switch (index->titles[i].object_type) {
case indx_object_type_hdmv:
if (!_parse_hdmv_obj(bs, &index->titles[i].hdmv))
return 0;
break;
case indx_object_type_bdj:
if (!_parse_bdj_obj(bs, &index->titles[i].bdj))
return 0;
break;
default:
BD_DEBUG(DBG_NAV | DBG_CRIT, "index.bdmv: unknown object type %d (#%d)\n", index->titles[i].object_type, i);
return 0;
}
}
return 1;
}
static MOBJ_OBJECTS *_mobj_parse(BD_FILE_H *fp)
{
BITSTREAM bs;
MOBJ_OBJECTS *objects = NULL;
uint16_t num_objects;
uint32_t data_len;
int extension_data_start, i;
bs_init(&bs, fp);
if (!_mobj_parse_header(&bs, &extension_data_start)) {
BD_DEBUG(DBG_NAV | DBG_CRIT, "MovieObject.bdmv: invalid header\n");
goto error;
}
if (extension_data_start) {
BD_DEBUG(DBG_NAV | DBG_CRIT, "MovieObject.bdmv: unknown extension data at %d\n", extension_data_start);
}
bs_seek_byte(&bs, 40);
data_len = bs_read(&bs, 32);
if ((bs_end(&bs) - bs_pos(&bs))/8 < (int64_t)data_len) {
BD_DEBUG(DBG_NAV | DBG_CRIT, "MovieObject.bdmv: invalid data_len %d !\n", data_len);
goto error;
}
objects = calloc(1, sizeof(MOBJ_OBJECTS));
if (!objects) {
BD_DEBUG(DBG_CRIT, "out of memory\n");
goto error;
}
bs_skip(&bs, 32); /* reserved */
num_objects = bs_read(&bs, 16);
objects->num_objects = num_objects;
objects->objects = calloc(num_objects, sizeof(MOBJ_OBJECT));
if (!objects->objects) {
BD_DEBUG(DBG_CRIT, "out of memory\n");
goto error;
}
for (i = 0; i < objects->num_objects; i++) {
if (!_mobj_parse_object(&bs, &objects->objects[i])) {
BD_DEBUG(DBG_NAV | DBG_CRIT, "MovieObject.bdmv: error parsing object %d\n", i);
goto error;
}
}
return objects;
error:
mobj_free(&objects);
return NULL;
}
static MOBJ_OBJECTS *_mobj_parse(const char *file_name)
{
BITSTREAM bs;
BD_FILE_H *fp;
MOBJ_OBJECTS *objects = NULL;
uint16_t num_objects;
uint32_t data_len;
int extension_data_start, i;
fp = file_open(file_name, "rb");
if (!fp) {
BD_DEBUG(DBG_NAV | DBG_CRIT, "error opening %s\n", file_name);
return NULL;
}
bs_init(&bs, fp);
if (!_mobj_parse_header(&bs, &extension_data_start)) {
BD_DEBUG(DBG_NAV | DBG_CRIT, "%s: invalid header\n", file_name);
goto error;
}
bs_seek_byte(&bs, 40);
data_len = bs_read(&bs, 32);
if ((bs_end(&bs) - bs_pos(&bs))/8 < (off_t)data_len) {
BD_DEBUG(DBG_NAV | DBG_CRIT, "%s: invalid data_len %d !\n", file_name, data_len);
goto error;
}
bs_skip(&bs, 32); /* reserved */
num_objects = bs_read(&bs, 16);
objects = calloc(1, sizeof(MOBJ_OBJECTS));
objects->num_objects = num_objects;
objects->objects = calloc(num_objects, sizeof(MOBJ_OBJECT));
for (i = 0; i < objects->num_objects; i++) {
if (!_mobj_parse_object(&bs, &objects->objects[i])) {
BD_DEBUG(DBG_NAV | DBG_CRIT, "%s: error parsing object %d\n", file_name, i);
goto error;
}
}
file_close(fp);
return objects;
error:
mobj_free(&objects);
file_close(fp);
return NULL;
}
