[gstreamer-bugs] [Bug 639237] textoverlay: patch to use "A OVER B" alpha compositing

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=639237
  GStreamer | gst-plugins-base | git

Lane Brooks <dirjud> changed:

           What    |Removed                     |Added
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 Attachment #178071|0                           |1
        is obsolete|                            |

--- Comment #1 from Lane Brooks <dirjud at gmail.com> 2011-01-18 04:16:54 UTC ---
Created an attachment (id=178581)
 View: https://bugzilla.gnome.org/attachment.cgi?id=178581
 Review: https://bugzilla.gnome.org/review?bug=639237&attachment=178581

updated patch

This is an updated patch. I no longer convert YUV to RGB prior to compositing.
Instead I composite directly in YUV space. So the only real change this patch
introduces compared to the original is to "A OVER B" compositing instead of "A
BLEND B". It makes more sense to me to use "A OVER B" when you have an alpha
that gets passed on.

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