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