[Bug 783591] openjpegdec: doesn't support grayscale with alpha

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=783591

Sebastian Dröge (slomo) <slomo at coaxion.net> changed:

           What    |Removed                     |Added
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 Attachment #353648|none                        |reviewed
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--- Comment #5 from Sebastian Dröge (slomo) <slomo at coaxion.net> ---
Review of attachment 353648:
 --> (https://bugzilla.gnome.org/review?bug=783591&attachment=353648)

::: ext/openjpeg/gstopenjpegdec.c
@@ +386,3 @@
+      tmp[1] = off[0] + *data_in[0];
+      tmp[2] = tmp[1];
+      tmp[3] = tmp[1];

Is alpha always component 0 (data_in[0]) in openjpeg? And why do you output it
as component 1 (tmp[1]), wouldn't that be RAGB or similar then?

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