glimagesink crash for thread error

[Nicolas Dufresne]

Le jeudi 30 août 2018 à 11:37 -0500, RiccardoCagnasso a écrit :
> I'm using playbin in python3 with glimagesink as a videosink.
> Every time the pipeline goes through a PLAYING -> NULL -> PLAYING
> cycle, the
> player has a random chance of crashing with
> 
>  [xcb] Unknown request in queue while dequeuing
> [xcb] Most likely this is a multi-threaded client and XInitThreads
> has not
> been called

^ This is excatly what you need to do.

> [xcb] Aborting, sorry about that.
> python: xcb_io.c:165: dequeue_pending_request: Assertion
> `!xcb_xlib_unknown_req_in_deq' failed.
> 
> error. This happens only on computer with intel video cards.
> The problem is probably related to this old bug
> 
https://lists.freedesktop.org/archives/gstreamer-bugs/2014-June/126812.html
> 
> Strange thing is that I'm calling Gobject.threads_init() and as the
> very
> earliest thing in process.

This calls is a no-op today and is in now way related to
XInitThreads(). First thing in your python scripts should be:

import ctypes
import sys
try:
  x11 = ctypes.cdll.LoadLibrary('libX11.so')
  x11.XInitThreads()
except:
  print "Warning: failed to XInitThreads()"

> 
> 
> 
> --
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