reconfigure event

[Christian Sell]

Hello,
 
in my program I have the need of re-initiating caps negotiation because the
output window is switched. From the docs at
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/pwg/html/chapter-negotiation.html
I drew the conclusion that this was simply a matter of sending a RECONFIGURE
event, which is what I did:
 
gst_pad_push_event(pad, gst_event_new_reconfigure());

where pad is my video sink pad. My expectation was that this would initiate a
full negotiation circle, with caps being exchanged etc. However, nothing
happened.

Then I read this statement: "Renegotiation and the RECONFIGURE event in
GStreamer are only "hints", not something that makes sure you immediately only
get buffers in the new format" (from
http://gstreamer-devel.966125.n4.nabble.com/Problems-with-renegotiation-when-using-queues-td4667389.html).
My investigation into the code also only showed markers being set and the like.

My question: how do I re-initiate caps negotiation such that it happens
synchronously/immediately?

thanks,
Christian