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element: When removing a ghost pad also unset its target

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Otherwise the proxy pad of the ghost pad still stays linked to some
element inside the bin, which is not allowed anymore according to the
topology.

In 2.0 this should be fixed more generically from inside GstGhostPad but
currently there is no way to get notified that the ghost pad is
unparented.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/642>
This commit is contained in:
Sebastian Dröge 2020-07-02 11:21:27 +03:00 committed by Tim-Philipp Müller
parent c33f859aa0
commit d0eb870c14
1 changed files with 11 additions and 0 deletions
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11
gst/gstelement.c
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@ -88,6 +88,7 @@
#include "gstbus.h"
#include "gsterror.h"
#include "gstevent.h"
#include "gstghostpad.h"
#include "gstutils.h"
#include "gstinfo.h"
#include "gstquark.h"
@ -803,6 +804,16 @@ gst_element_remove_pad (GstElement * element, GstPad * pad)
gst_object_unref (peer);
}
/* if this is a ghost pad we also need to unset the target or it
* will stay linked although not allowed according to the topology.
*
* FIXME 2.0: Do this generically somehow from inside GstGhostPad
* when it gets unparented.
*/
if (GST_IS_GHOST_PAD (pad)) {
gst_ghost_pad_set_target (GST_GHOST_PAD (pad), NULL);
}
GST_OBJECT_LOCK (element);
/* remove it from the list */
switch (gst_pad_get_direction (pad)) {