dtv-scan-tables.git - Digital TV scan tables

Age	Commit message (Collapse)	Author	Files	Lines
2004-12-19	submitted by Jouni Karvo	Johannes Stezenbach	1	-0/+4

/* * 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/atsc/eit_section.h> struct atsc_eit_section *atsc_eit_section_codec(struct atsc_section_psip *psip) { uint8_t * buf = (uint8_t *) psip; size_t pos = 0; size_t len = section_ext_length(&(psip->ext_head)); int idx; if (len < sizeof(struct atsc_eit_section)) return NULL; struct atsc_eit_section *eit = (struct atsc_eit_section *) psip; pos += sizeof(struct atsc_eit_section); for(idx =0; idx < eit->num_events_in_section; idx++) { if (len < (pos + sizeof(struct atsc_eit_event))) return NULL; struct atsc_eit_event *event = (struct atsc_eit_event *) (buf+pos); bswap16(buf+pos); bswap32(buf+pos+2); bswap32(buf+pos+6); pos += sizeof(struct atsc_eit_event); if (len < (pos + event->title_length)) return NULL; if (atsc_text_validate(buf+pos, event->title_length)) return NULL; pos += event->title_length; if (len < (pos + sizeof(struct atsc_eit_event_part2))) return NULL; struct atsc_eit_event_part2 *part2 = (struct atsc_eit_event_part2 *) (buf+pos); bswap16(buf+pos); pos += sizeof(struct atsc_eit_event_part2); if (len < (pos + part2->descriptors_length)) return NULL; if (verify_descriptors(buf + pos, part2->descriptors_length)) return NULL; pos += part2->descriptors_length; } if (pos != len) return NULL; return (struct atsc_eit_section *) psip; }