[Bug 742385] jpegdec plugin removes custom metadata

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=742385
  GStreamer | gst-plugins-good | 1.4.5

--- Comment #9 from Chris Maes <chrismaes87 at gmail.com> 2015-01-05 17:11:23 UTC ---
Ok, I'll start over and try to specify everything. I am describing a bug in
jpegdec ; not in my own code. First I created my own metadata following this
example:
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/pwg/html/section-allocation-meta.html
(and I joined that source code). It is fully functional; have been using this
for over a year now. So if I do:

gst-launch-1.0 filesrc ! addmeta ! printmeta ! fakesink

(with "addmeta" and "printmeta" two fictional; custom-made plugins. addmeta
will add my metadata structure and printmeta will print out whether my metadata
is present or not and what is inside). This pipeline will work correctly (thus
printing out my metadata for each buffer). If I do:

gst-launch-1.0 filesrc ! addmeta ! jpegenc ! printmeta ! fakesink

then my metadata will still be printed out without problem. Now the bug: if I
do:

gst-launch-1.0 filesrc ! addmeta ! jpegdec ! printmeta ! fakesink

my metadata will not be printed since jpegdec removed it.

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