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-rw-r--r--lib/libucsi/atsc/rrt_section.c108
1 files changed, 108 insertions, 0 deletions
diff --git a/lib/libucsi/atsc/rrt_section.c b/lib/libucsi/atsc/rrt_section.c
new file mode 100644
index 0000000..6e96c3a
--- /dev/null
+++ b/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;
+}