void default_cdrom_disc_destroy( sector_source_t source )
{
assert( IS_SECTOR_SOURCE_TYPE(source,DISC_SECTOR_SOURCE) );
cdrom_disc_t disc = (cdrom_disc_t)source;
int i;
for( i=0; i<disc->track_count; i++ ) {
sector_source_unref( disc->track[i].source );
}
sector_source_unref( disc->base_source );
g_free( (char *)disc->name );
default_sector_source_destroy( source );
}
/**
* Construct a sector source from a given IsoImage.
*/
sector_source_t iso_sector_source_new( IsoImage *image, sector_mode_t mode, cdrom_lba_t start_sector,
const char *bootstrap, ERROR *err )
{
assert( mode == SECTOR_MODE1 || mode == SECTOR_MODE2_FORM1 );
IsoWriteOpts *opts;
struct burn_source *burn;
int status = iso_write_opts_new(&opts, 0);
if( status != 1 ) {
iso_error_convert(status, err);
return NULL;
}
iso_write_opts_set_appendable(opts,0);
iso_write_opts_set_ms_block(opts, start_sector);
status = iso_image_create_burn_source(image, opts, &burn);
iso_write_opts_free(opts);
if( status != 1 ) {
iso_error_convert(status, err);
return NULL;
}
off_t size = burn->get_size(burn);
sector_source_t source = tmpfile_sector_source_new(mode);
if( source == NULL ) {
burn->free_data(burn);
free(burn);
return NULL;
}
unsigned char buf[2048];
cdrom_count_t expect = size/2048;
int fd = file_sector_source_get_fd(source);
source->size = expect;
lseek( fd, 0, SEEK_SET );
write( fd, bootstrap, 32768 );
for( cdrom_count_t count = 0; count < expect; count++ ) {
if( burn->read == NULL ) {
status = burn->read_xt(burn, buf, 2048);
} else {
status = burn->read(burn, buf, 2048);
}
if( status == 0 ) {
/* EOF */
break;
} else if( status != 2048 ) {
/* Error */
sector_source_unref(source);
source = NULL;
break;
}
/* Discard first 16 sectors, replaced with the bootstrap */
if( count >= (32768/2048) )
write( fd, buf, 2048 );
}
burn->free_data(burn);
free(burn);
return source;
}
void cdrom_disc_clear_toc( cdrom_disc_t disc )
{
disc->disc_type = CDROM_DISC_NONE;
disc->leadout = 0;
disc->track_count = 0;
disc->session_count = 0;
for( unsigned i=0; i< CDROM_MAX_TRACKS; i++ ) {
if( disc->track[i].source != NULL ) {
sector_source_unref( disc->track[i].source );
disc->track[i].source = NULL;
}
}
}
/**
* Construct a disc around an IsoImage track (convenience function)
*/
cdrom_disc_t cdrom_disc_new_from_iso_image( cdrom_disc_type_t type, IsoImage *iso, cdrom_lba_t lba,
const char *bootstrap, ERROR *err )
{
sector_mode_t mode = (type == CDROM_DISC_NONXA ? SECTOR_MODE1 : SECTOR_MODE2_FORM1 );
sector_source_t source = iso_sector_source_new( iso, mode, lba, bootstrap, err );
if( source != NULL ) {
cdrom_disc_t disc = cdrom_disc_new_from_track(type, source, lba, err);
if( disc == NULL ) {
sector_source_unref( source );
} else {
return disc;
}
}
return NULL;
}
static void isofs_release(IsoDataSource *src)
{
sector_source_unref((sector_source_t)src->data);
}
