[gst-devel] X error on playing video through xvimagesink to QWidget

[Nicolas Bertrand]

I think I have almost the same problem but with gtk .
You have to put a lock , during update of xwindow_id.

See bug https://bugzilla.gnome.org/show_bug.cgi?id=599885

Exemple code with GTK 



    def on_sync_message(self, bus, message):
>         if message.structure is None:
>             return
>                 
>         if message.structure.get_name() == "prepare-xwindow-id":           
>             # Assign the viewport
>             gtk.gdk.threads_enter()
>             gtk.gdk.display_get_default().sync()
>             imagesink = message.src
>             imagesink.set_property("force-aspect-ratio", True)
>             imagesink.set_xwindow_id(self.movie_window.window.xid)
>             gtk.gdk.threads_leave()

Nico




4ernov a écrit :
> Hello,
> I suffer strange problem when using xvimagesink and ximagesink and
> displaying the output to Qt4's QWidget. I initialize sink element with
> windowid of QWidget:
>
> gst_x_overlay_set_xwindow_id ((GstXOverlay*)xvimagesink,
> ui->video->winId());
>
> and then play video to it using playbin with this sink set as video-sink:
>
> g_object_set(G_OBJECT (_pipeline), "video-sink", xvimagesink, NULL);
>
> Video files (I tried avi with Xvid encoded video) are played just
> fine, but when I try to play any DVD disc pipeline works ok, sound
> goes but nothing is displayed on the widget and console is filled with
> X Error messages:
>
> X Error: BadGC (invalid GC parameter) 13
>   Extension:    133 (Uknown extension)
>   Minor opcode: 19 (Unknown request)
>   Resource id:  0x4c00002
>
> I think it prints one such text on every frame, very often.
> Also, if I set windowid of the main window of application, i.e.:
>
> gst_x_overlay_set_xwindow_id ((GstXOverlay*)xvimagesink, this->winId());
>
> everything works ok, too.
>
> Could you please help me with the problem? How can I fix it or maybe
> it's a bug in GStreamer or Qt?
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