Text packets are the main payload packet.
- a 64 bit value representing the start of the event, at the granule rate.
- a 64 bit value representing the duration of the event, at the granule rate.
- a 64 bit value representing the start of the earliest event still active when this event starts, at the granule rate.
- a 32 bit value representing the number of bytes in the text to follow.
- that same number of bytes representing the text.
- 1 bit being 1 if the event is assigned an ID, 0 if not.
- if the event is assigned an ID, a variable length integer representing the ID assigned to this event.
- 1 bit being 1 if there are motions attached to this event.
Next, if there are motions attached to this event:
For each motion:
- a bit being 1 if the next motion is predefined, 0 if not
- if the next motion is predefined, a variable length integer representing the index of this motion in the list of predefined motions
- if the next motion is not predefined, a motion definition.
Next, a bit being 1 if there are overrides for this event. If there are:
- if the next bit is set, 8 bits for the text encoding used by the text in this packet.
- if the next bit is set, 8 bits for the text directionality used by the text in this packet.
- if the next bit is set, a ref format_32v "variable length integer" representing the number of characters in the following language string, followed by this number of bytes for a (non NUL terminated) string representing the language used by the text in this event.
- if the next bit is set, a variable length integer representing the index of a predefined region to use for this event.
- if the next bit is set, a region definition to use for this event.
- if the next bit is set, a variable length integer representing the index of a predefined style to use for this event.
- if the next bit is set, a style definition to use for this event.
- if the next bit is set, a variable length integer representing the index of a predefined style to use as secondary style for this event.
- if the next bit is set, a style definition to use as secondary style for this event.
- if the next bit is set, a variable length integer representing the index of the font mapping to use for the text in this event.
Next, there is a warp.
Bitstream version 0.2 starts making use of this warp:
- if the next bit is set, a variable length integer representing the index of the palette to use for the bitmap in this event.
- if the next bit is set, a palette definition to use for the bitmap in this event.
- if the next bit is set, a variable length integer representing the index of the bitmap to use for this event.
- if the next bit is set, a bitmap definition to use for this event.
- if the next bit is set, 8 bits representing the type of markup to use to interpret the text in this event.
- Note:
- Since a warp may contain any number of chained warps, it is important to note that bitstream 0.2 will contain a second warp after the one used above. Similarly, if this second warp becomes used in future revisions of the bitstream, a third one will automatically be used.
Next, the data ends.
Generated on Mon Jul 21 07:56:25 2008 for libkate by
1.5.4