pub unsafe extern "C" fn gst_mpegts_descriptor_parse_dvb_teletext_idx(
    descriptor: *const GstMpegtsDescriptor,
    idx: c_uint,
    language_code: *mut *mut c_char,
    teletext_type: *mut GstMpegtsDVBTeletextType,
    magazine_number: *mut u8,
    page_number: *mut u8,
) -> gboolean