Unboxing GValues into WCPs

[Andreas Rottmann]

Hi!

I'm messing a bit with the GStreamer bindings, and am trying to write
a metadata extractor. I have a subtle problem with a signal callback:
the arguments for the attached procedure are passed as GValues, and
one of the arguments is an GstTagList*. From what I can see, there is
currently no way to get the corresponding <gst-tag-list*> WCP out of
the GValue. Thus we need something like gvalue->wcp, which is an
inherently unsave procedure, since you need to know the WCT that is
contained in the GValue. It would be used like:

(gvalue->wcp <gst-tag-list*> the-gvalue)

This corresponds to unboxing the GValue and casting it to GstTagList*
on the C side. I'll try to implement this soonish. Any comments?

Regards, Andy
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Andreas Rottmann         | address@hidden      | address@hidden | address@hidden
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