====== ifoOpen ======

  * [[libdvdread]]

Me trying to follow the code logic.

==== ifoOpen ====

  * ifo_handle_t *ifoOpen(dvd_reader_t *dvd, int title)

  * if IFO is VMGI
    * ifoRead_FP_PGC(ifofile) - mandatory
    * ifoRead_TT_SRPT(ifofile) - mandatory
    * **ifoRead_PGCI_UT(ifofile)**
    * ifoRead_PTL_MAIT(ifofile)
    * ifoRead_VTS_ATRT(ifofile) - mandatory
    * ifoRead_TXTDT_MGI(ifofile)
    * **ifoRead_C_ADT(ifofile)**
    * ifoRead_VOBU_ADMAP(ifofile)

  * if IFO is VTS
    * ifoRead_VTS_PTT_SRPT(ifofile) - mandatory
    * ifoRead_PGCIT(ifofile) - mandatory
    * **ifoRead_PGCI_UT(ifofile)**
    * ifoRead_VTS_TMAPT(ifofile)
    * **ifoRead_C_ADT(ifofile)**
    * ifoRead_VOBU_ADMAP(ifofile)
    * ifoRead_TITLE_C_ADT(ifofile) - mandatory
    * ifoRead_TITLE_VOBU_ADMAP(ifofile) - mandatory