diff options
Diffstat (limited to 'kaffeine/src/input/dvb/lib/libucsi/atsc/rrt_section.c')
| -rw-r--r-- | kaffeine/src/input/dvb/lib/libucsi/atsc/rrt_section.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/kaffeine/src/input/dvb/lib/libucsi/atsc/rrt_section.c b/kaffeine/src/input/dvb/lib/libucsi/atsc/rrt_section.c new file mode 100644 index 0000000..6e96c3a --- /dev/null +++ b/kaffeine/src/input/dvb/lib/libucsi/atsc/rrt_section.c @@ -0,0 +1,108 @@ +/* + * 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/rrt_section.h> + +struct atsc_rrt_section *atsc_rrt_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; + int vidx; + struct atsc_rrt_section *rrt = (struct atsc_rrt_section *) psip; + + if (len < sizeof(struct atsc_rrt_section)) + return NULL; + pos += sizeof(struct atsc_rrt_section); + + if (len < (pos + rrt->rating_region_name_length)) + return NULL; + if (atsc_text_validate(buf+pos, rrt->rating_region_name_length)) + return NULL; + + pos += rrt->rating_region_name_length; + if (len < (pos + sizeof(struct atsc_rrt_section_part2))) + return NULL; + struct atsc_rrt_section_part2 *rrtpart2 = (struct atsc_rrt_section_part2 *) (buf+pos); + + pos += sizeof(struct atsc_rrt_section_part2); + for(idx =0; idx < rrtpart2->dimensions_defined; idx++) { + if (len < (pos + sizeof(struct atsc_rrt_dimension))) + return NULL; + struct atsc_rrt_dimension *dimension = (struct atsc_rrt_dimension *) (buf+pos); + + pos += sizeof(struct atsc_rrt_dimension); + if (len < (pos + dimension->dimension_name_length)) + return NULL; + if (atsc_text_validate(buf+pos, dimension->dimension_name_length)) + return NULL; + + pos += dimension->dimension_name_length; + if (len < (pos + sizeof(struct atsc_rrt_dimension_part2))) + return NULL; + struct atsc_rrt_dimension_part2 *dpart2 = (struct atsc_rrt_dimension_part2 *) (buf+pos); + + pos += sizeof(struct atsc_rrt_dimension_part2); + for(vidx =0; vidx < dpart2->values_defined; vidx++) { + if (len < (pos + sizeof(struct atsc_rrt_dimension_value))) + return NULL; + struct atsc_rrt_dimension_value *value = (struct atsc_rrt_dimension_value *) (buf+pos); + + pos += sizeof(struct atsc_rrt_dimension_value); + if (len < (pos + value->abbrev_rating_value_length)) + return NULL; + if (atsc_text_validate(buf+pos, value->abbrev_rating_value_length)) + return NULL; + + pos += value->abbrev_rating_value_length; + if (len < (pos + sizeof(struct atsc_rrt_dimension_value_part2))) + return NULL; + struct atsc_rrt_dimension_value_part2 *vpart2 = + (struct atsc_rrt_dimension_value_part2 *) (buf+pos); + + pos += sizeof(struct atsc_rrt_dimension_value_part2); + if (len < (pos + vpart2->rating_value_length)) + return NULL; + if (atsc_text_validate(buf+pos, vpart2->rating_value_length)) + return NULL; + + pos+= vpart2->rating_value_length; + } + } + + if (len < (pos + sizeof(struct atsc_rrt_section_part3))) + return NULL; + struct atsc_rrt_section_part3 *part3 = (struct atsc_rrt_section_part3 *) (buf+pos); + + pos += sizeof(struct atsc_rrt_section_part3); + if (len < (pos + part3->descriptors_length)) + return NULL; + + if (verify_descriptors(buf + pos, part3->descriptors_length)) + return NULL; + + pos += part3->descriptors_length; + if (pos != len) + return NULL; + + return (struct atsc_rrt_section *) psip; +} |