public static extern void libvlc_media_player_set_media(libvlc_media_player_t p_mi, libvlc_media_t p_md);
public static extern void libvlc_media_release(libvlc_media_t p_meta_desc);
public static extern libvlc_media_player_t libvlc_media_player_new_from_media(libvlc_media_t p_md);