BDDiscInfo Declarationtypedef struct BDDiscInfo BDDiscInfo; TopicsInstance PropertiesdataLengthdataTypediscStatuserasablefirstTrackNumberInLastSessionLSBfirstTrackNumberInLastSessionMSBlastTrackNumberInLastSessionLSBlastTrackNumberInLastSessionMSBnumberOfSessionsLSBnumberOfSessionsMSBreserved2reserved4reserved6stateOfLastSession