using Gst;

namespace MeeGst
{
    static PadTemplate src_template;
    static PadTemplate sink_template;

    static void init_template(){
        src_template = new PadTemplate("src",PadDirection.SRC,PadPresence.ALWAYS,new Caps.any ());
        sink_template = new PadTemplate("sink",PadDirection.SINK,PadPresence.ALWAYS,new Caps.any ());
    }

    public class MyFilter : Element
    {
        public MyFilter(){
        }

        public signal void test_changed(string value);

        construct {
            init_template();
            set_static_metadata ("MyFilter","ugly","my first plugin","Bibi");
            add_pad_template (src_template);
            add_pad_template (sink_template);
            sinkpad = new Pad.from_template (sink_template, "sink");
            srcpad = new Pad.from_template (src_template, "src");
            notify.connect(spec => {
                if(spec.name == "test"){
                    test_changed(test);
                }
            });
        }

        public string test { get; set; }

        public Pad sinkpad;
        public Pad srcpad;
    }

    static bool myfilter_init (Gst.Plugin plugin){
        return Gst.Element.register (plugin, "myfilter", 0, typeof(MyFilter));
    }

    public static bool init(string[] args){
        Gst.init (ref args);
        return Plugin.register_static (1,0,"myfilter","Custom filter",myfilter_init,"0.1","LGPL","GStreamer","MeeGst","http://gstreamer.net/");
    }
}

/***/

using MeeGst;

void main(string[] args){
    init(args);
    var filter = Gst.ElementFactory.make("myfilter","filter");
    filter["test"] = "value";
}

/**
* (main:12967): GStreamer-WARNING **: Element factory metadata for 'myfilter' has no valid long-name field
*/