public void AddSlave(SlaveMedia slave)
        {
            int res = LibVlcMethods.libvlc_media_slaves_add(_hMedia, (libvlc_media_slave_type_t)slave.SlaveType, slave.Priority, slave.Url.ToUtf8());

            if (res == -1)
            {
                throw new LibVlcException("Failed to add media slave");
            }
        }
        public void AddSlaveMedia(SlaveMedia slave)
        {
            int res = LibVlcMethods.libvlc_media_player_add_slave(m_hMediaPlayer, (libvlc_media_slave_type_t)slave.SlaveType,
                                                                  slave.Url.ToUtf8(), true);

            if (res == -1)
            {
                throw new LibVlcException("Failed to add slave media");
            }
        }