[mythtv-commits] Ticket #7739: Backspace is not supported in EIA-708 (ATSC) closed captions
MythTV
mythtv at cvs.mythtv.org
Fri Dec 18 00:58:02 UTC 2009
#7739: Backspace is not supported in EIA-708 (ATSC) closed captions
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Reporter: Clayton Smith <argilo@…> | Owner: danielk
Type: defect | Status: new
Priority: minor | Milestone: unknown
Component: MythTV - ATSC | Version: head
Severity: medium | Mlocked: 0
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Comment(by danielk):
Backspace should probably go in the opposite direction of the current
scroll direction. Who are these clowns sending a backspace character in
captions anyway?!?
So to implement add a DecrPenLocation() that does the opposite of what
IncrPenLocation() does, then when IncrPenLocation() is expanded to handle
all the scroll directions DecrPenLocation() can be updated as well. Also,
after calling DecrPenLocation() set the character under the pen location
to a space, to mimic what happens in an editor. That should handle
LeftToRight text in addition to RightToLeft, and both TopToBottom and
BottomToTop scrolling.
This is a good reference for the standard:
http://en.wikipedia.org/wiki/CEA-708
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Ticket URL: <http://svn.mythtv.org/trac/ticket/7739#comment:3>
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