GStreamer cairooverlay

["g.schlmm" <g schlmm googlemail com>]

Hi all,

i wanted to test out the new gst cairooverlay plugin in perl.
so i tried to convert the code to perl from the example application ( 
http://cgit.freedesktop.org/gstreamer/gst-plugins-good/tree/tests/examples/cairo/cairo_overlay.c 
)

Now im having the problem that the draw signal sends me this error:
"GType CairoContext (15497280) is not registered with gperl"
I have installed the Cairo cpan package but it seems its not exported to 
perl somehow?
Is there a way around it, to still use the overlay ?

Best regards and thank you already
Georg


snippet:

my $pipeline = GStreamer::Pipeline->new("cairo-overlay-example");
my ($source, $a1, $cairo_overlay, $a2, $sink) = 
GStreamer::ElementFactory->make(
        videotestsrc => "source",
        ffmpegcolorspace => "a1",
        cairooverlay => "overlay",
        ffmpegcolorspace => "a2",
        autovideosink => "sink"
);

# Here im getting the the CairoContext error
$cairo_overlay->signal_connect ("draw", sub {
        use Data::Dumper;
        print Dumper(\ _);
});

$pipeline->add ($source, $a1, $cairo_overlay, $a2, $sink);
$source->link($a1);
$a1->link($cairo_overlay);
$cairo_overlay->link($a2);
$a2->link($sink);

$pipeline->set_state('playing');