[Bug 720597] decodebin: query allocation always sent twice

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=720597
  GStreamer | gst-plugins-base | 1.2.1

--- Comment #17 from Sebastian Dröge (slomo) <slomo at coaxion.net> 2014-01-08 09:43:37 UTC ---
(In reply to comment #16)
> (In reply to comment #15)
> > I'm confused what the actual problem now is here :) I think it's correct that
> > another ALLOCATION query happens if one happened before and then things are
> > relinked (e.g. because decodebin exposes the pads, or because it continues
> > autoplugging). 
> 
> Sorry I wasn't clear, the patch 265175 [details] fixed the fact there were 2 allocation
> queries in decodebin (for each stream).
> If you are ok with the patch I'll push it and close this bug.
> 
> (gst-launch-1.0 filesrc location=videofile ! decodebin ! xvimagesink)

Can you provide a complete analysis of the situation and why the 2 allocation
queries happen here? Also in the commit message :) I'm not sure anymore if this
fix isn't breaking something in theory.

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