main.vala

using LADSPA;

int main(string[] args)
{
    unowned Descriptor? desc = LADSPA.descriptor(1);

    if (desc != null)
    {
        stdout.printf(@"unique_id: $(desc.unique_id)\nlabel: $(desc.label)\nname: $(desc.name)\nmaker: $(desc.maker)\ncopyright: $(desc.copyright)\n");

        foreach (PortDescriptor pd in desc.port_descriptors)
        {
            stdout.printf("port desc: %d\n", pd);
        }

        foreach (unowned string name in desc.port_names)
        {
            stdout.printf("port name: %s\n", name);
        }

        foreach (PortRangeHint hint in desc.port_range_hints)
        {
            stdout.printf("port range hint: %d, %f, %f\n", hint.descriptor, hint.lower_bound, hint.upper_bound);
        }

        Handle? handle = desc.instantiate(desc, 0);

        if (handle != null)
        {
            stdout.printf("about to activate...\n");
            if (desc.activate != null) desc.activate(handle);

            // your code here

            stdout.printf("about to deactivate...\n");
            if (desc.deactivate != null) desc.deactivate(handle);

            stdout.printf("about to run...\n");
            desc.cleanup((owned) handle);
        }
    }

    return 0;
}