/**
* Open a DVD image or block device file.
* Checks if the root directory in the udf image file can be found.
* If not it assumes this isn't a valid udf image and returns NULL
*/
static dvd_reader_t *DVDOpenImageFile( const char *location, int have_css )
{
dvd_reader_t *dvd;
dvd_input_t dev;
int verbose;
verbose = get_verbose();
dev = dvdinput_open( location );
if( !dev ) {
if(verbose >= 1) {
fprintf( stderr, "libdvdread: Can't open '%s' for reading: %s\n",
location, strerror(errno));
}
return NULL;
}
dvd = (dvd_reader_t *) malloc( sizeof( dvd_reader_t ) );
if( !dvd ) {
int tmp_errno = errno;
dvdinput_close(dev);
errno = tmp_errno;
return NULL;
}
dvd->verbose = verbose;
dvd->isImageFile = 1;
dvd->dev = dev;
dvd->path_root = NULL;
dvd->udfcache_level = DEFAULT_UDF_CACHE_LEVEL;
dvd->udfcache = NULL;
dvd->align = NULL;
if( have_css ) {
/* Only if DVDCSS_METHOD = title, a bit if it's disc or if
* DVDCSS_METHOD = key but region missmatch. Unfortunaly we
* don't have that information. */
dvd->css_state = 1; /* Need key init. */
}
dvd->css_title = 0;
/* sanity check, is it a valid UDF image, can we find the root dir */
if(!UDFFindFile(dvd, "/", NULL)) {
dvdinput_close(dvd->dev);
if(dvd->udfcache) {
FreeUDFCache(dvd, dvd->udfcache);
}
if(dvd->align) {
if(dvd->verbose >= 0) {
fprintf(stderr, "libdvdread: DVDOpenImageFile(): Memory leak in align functions 1\n");
}
}
free(dvd);
return NULL;
}
return dvd;
}
void DVDClose( dvd_reader_t *dvd )
{
if( dvd ) {
if( dvd->dev ) dvdinput_close( dvd->dev );
if( dvd->path_root ) free( dvd->path_root );
if( dvd->udfcache ) FreeUDFCache( dvd->udfcache );
free( dvd );
}
}
void DVDClose( dvd_reader_t *dvd )
{
if( dvd ) {
if( dvd->dev ) dvdinput_close( dvd->dev );
if( dvd->path_root ) free( dvd->path_root );
if( dvd->udfcache ) FreeUDFCache( dvd, dvd->udfcache );
if(dvd->align) {
if(dvd->verbose >= 0) {
fprintf(stderr, "libdvdread: DVDClose(): Memory leak in align functions\n");
}
}
free( dvd );
}
}
