[Bug 745516] xvimagesink: race condition causes crash in XCB

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=745516

--- Comment #4 from Sebastian Dröge (slomo) <slomo at coaxion.net> ---
Why do we need XInitThreads() for xvimagesink? Where are we using the same
display connection from multiple threads?


The GL code does that, yes. But an application has to call XInitThreads()
*before* using any X11 API. So also before e.g. gtk_init(). Otherwise things
break in horrible ways. That's why we do it there conditional on an environment
variable to opt-in.

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