[Bug 741054] New: gl/cocoa: Simplify NSApplication initialisation for console apps

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=741054
  GStreamer | gst-plugins-bad | unspecified

           Summary: gl/cocoa: Simplify NSApplication initialisation for
                    console apps
    Classification: Platform
           Product: GStreamer
           Version: unspecified
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: arun at accosted.net
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


This fixes a deadlock and makes failure to initialise the NSApp explicitly
fail. I looked at how GDK deals with this on Sebastian's suggestion, and that
looks a bit more involved -- we would need to replace the GLib poll function
with a Cocoa event poll function, and move fd polling to a separate thread. In
my mind, this is quite a lot of complexity for a bit of a corner case. Either
way, this patch should make things better, not worse, while we try to find a
more robust solution.

The GDK solution, for the curious:

https://git.gnome.org/browse/gtk+/tree/gdk/quartz/gdkeventloop-quartz.c#n12

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