/* * section and descriptor parser * * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org) * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */#include<libucsi/dvb/eit_section.h>structdvb_eit_section*dvb_eit_section_codec(structsection_ext*ext){uint8_t*buf=(uint8_t*)ext;size_tpos=sizeof(structsection_ext);size_tlen=section_ext_length(ext);if(len<sizeof(structdvb_eit_section))returnNULL;bswap16(buf+pos);pos+=2;bswap16(buf+pos);pos+=4;while(pos<len){structdvb_eit_event*event=(structdvb_eit_event*)(buf+pos);if((pos+sizeof(structdvb_eit_event))>len)returnNULL;bswap16(buf+pos);bswap16(buf+pos+10);pos+=sizeof(structdvb_eit_event);if((pos+event->descriptors_loop_length)>len)returnNULL;if(verify_descriptors(buf+pos,event->descriptors_loop_length))returnNULL;pos+=event->descriptors_loop_length;}if(pos!=len)returnNULL;return(structdvb_eit_section*)ext;}