[Bug 777400] [PATCH] fix dvdspu crash when display_rect.bottom isn't even

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=777400

Jan Schmidt <thaytan at noraisin.net> changed:

           What    |Removed                     |Added
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                 CC|                            |thaytan at noraisin.net

--- Comment #2 from Jan Schmidt <thaytan at noraisin.net> ---
It probably should be an assert, because those are bad - but there's something
odd there.

We're supposed to start rendering subs on an even Y coordinate, then render
pairs of lines so we can blend the half-sampled chroma easily. At the end is
this clause, which may render 1 final line - but that line should always be on
an even line, because we started on an even line and rendered in pairs.

The implication is that the top coordinate of these DVD subs is starting on an
odd line and we should look at it more closely (also not valid by the DVD spec
IIRC).

Can you please provide a GST_DEBUG=gstspu:6 debug log?

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