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Standard DVD Authoring and Recording SDK

VM Language Support

A set of 64-bits command instructions is defined in the DVD Specification. In this SDK, user may apply Virtual Machine command language to interpret each navigation command, and may assign the VM command in each Title domain and each Menu domain during the authoring stage.

VM command codes always start with prefix 'VM_', followed by the command structure. For examples:

VT_JumpVTS_PTT( unsigned short PTTN, unsigned char VTS_TTN )

JumpVTS_PTT - A jump PTT (Part of Title) command in the current VTS domain

PTTN - A designated PTT number

VTS_TTN - A designated Title number in the current VTS domain

 

VM_CompareLinkPGCN( unsigned char GPRMN, unsigned short Value, unsigned short PGCN )

CompareLinkPGCN - A link command to specific PGC while comparing value in one of

                            the GPRM's (General Parameter)

GPRMN - A General Parameter Number

Value - A numerical value stored in the specific GPRM

PGCN - A PGC number 

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