• Wim Taymans's avatar
    interface: add an interface struct · ff946e3d
    Wim Taymans authored
    The interface struct has the type,version and methods of the
    interface.
    Make spa interfaces extend from spa_interface and make a
    separate structure for the methods.
    Pass a generic void* as the first argument of methods, like
    we don in PipeWire.
    Bundle the methods + implementation in a versioned inteface
    and use that to invoke methods. This way we can do version
    checks on the methods.
    Make resource and proxy interfaces that we can can call. We
    can then make the core interfaces independent on proxy/resource and
    hide them in the lower layers.
    Add add_listener method to methods of core interfaces, just
    like SPA.
    ff946e3d