[Bug 644773] Add support for Y422 colorspaces in videoflip element

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=644773
  GStreamer | gst-plugins-good | git

Youness Alaoui <youness.alaoui> changed:

           What    |Removed                     |Added
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 Attachment #183392|0                           |1
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--- Comment #1 from Youness Alaoui <youness.alaoui at collabora.co.uk> 2011-03-15 01:37:18 UTC ---
Created an attachment (id=183400)
 View: https://bugzilla.gnome.org/attachment.cgi?id=183400
 Review: https://bugzilla.gnome.org/review?bug=644773&attachment=183400

[PATCH] videoflip: Add support for YUY2, UVYV and YVYU colorspaces

After discussion with David Schleef and additional testing, it turns out there
was a buffer overflow. Since I increment x by 2, and use x+1, if the width was
odd, then x+1 could try to access data outside the boundaries of the array
(especially in the case of (sh - 1 - (x + 1))).
I'm attaching a new patch that should resolve this issue.
Thanks.

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