Re: "Not a CODE reference" error with Gtk::Bus::add_watch

[Torsten Schönfeld <kaffeetisch gmx de>]

On 20.11.2016 14:30, Wouter Verhelst wrote:
> my $pipeline = Gst::parse_launch("...");
>
> my $bus = $pipeline->get_bus();
> $bus->add_watch(\&buswatch, $mainloop);
>
> $mainloop->run();

Since gst_bus_add_watch is not introspectable directly, the GStreamer 
authors marked gst_bus_add_watch_full as its replacement.  ("perli11ndoc 
Gst::Bus::add_watch" says "[NOT INTROSPECTABLE, shadowed by 
add_watch_full]".)  Unfortunately, its calling syntax is slightly 
different.  See "perli11ndoc Gst::Bus::add_watch_full".  So, try this:

        use Glib qw/G_PRIORITY_DEFAULT/;
        $bus->add_watch(G_PRIORITY_DEFAULT, \&buswatch, $mainloop);

I also needed to add this before entering the main loop:

        $pipeline->set_state('playing');