DVD-Video 解谜 - Sub-Pictures - User Operation flags (Uops)

User Operation Flags (Uops)

User operation flags appear at three different levels, there is one for the title in TT_SRPT (only Uop0 and Uop1, as bits 0 and 1 of Title Type), one for each Program Chain, and one in each VOBU in the PCI packet.
These flags are ORed together, a set bit in any mask inhibits the associated control. number controls affected PGC VOBU 0 Time play or search   1 PTT play or search   2 Title play   3 Stop 4 GoUp   5 Time or PTT search 6 TopPG or PrevPG search 7 NextPG search 8 Forward scan 9 Backward scan 10 Menu call - Title 11 Menu call - Root 12 Menu call - Subpicture 13 Menu call - Audio 14 Menu call - Angle 15 Menu call - PTT 16 Resume 17 Button select or activate   18 Still off 19 Pause on 20 Audio stream change 21 Subpicture stream change 22 Angle change 23 Karaoke audio mix change 24 Video presentation mode change