[Bug 731143] New: waylandsink: Ensure that the frame sync callback has been completed after calling wl_display_dispatch()

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=731143
  GStreamer | gst-plugins-bad | git

           Summary: waylandsink: Ensure that the frame sync callback has
                    been completed after calling wl_display_dispatch()
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: kkobayas at igel.co.jp
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=277781)
 View: https://bugzilla.gnome.org/attachment.cgi?id=277781
 Review: https://bugzilla.gnome.org/review?bug=731143&attachment=277781

waylandsink: Ensure that the frame sync callback has been completed after
calling wl_display_dispatch()

Any events queued on the wl_display main queue are dispatched by
wl_display_dispatch(), but it is uncertain whether the frame sync callback
for the previous wl_surface_commit() has been completed after this function
call returns.
This patch makes sure to wait for the frame sync callback for every
frame.

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