or ATAPI or whatever. cdda_interface: Use mmc_have_inteface() we don't have anything for this except in GNU/Linux. May reduce the unnecessary data_bigendianp() calls which cause lots of disc reading. Turn #defines for MMC Profiles into enumeration. Add enumeration for "core" interface types #include <cdio/scsi_mmc.h> -> #include <cdio/mmc.h>