1 files changed, 235 insertions, 0 deletions
diff --git a/lib/libucsi/atsc/content_advisory_descriptor.h b/lib/libucsi/atsc/content_advisory_descriptor.h
new file mode 100644
index 0000000..da19813
--- /dev/null
+++ b/lib/libucsi/atsc/content_advisory_descriptor.h
@@ -0,0 +1,235 @@
+/*
+ * 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
+ */
+
+#ifndef _UCSI_ATSC_CONTENT_ADVISORY_DESCRIPTOR
+#define _UCSI_ATSC_CONTENT_ADVISORY_DESCRIPTOR 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/descriptor.h>
+#include <libucsi/endianops.h>
+#include <libucsi/types.h>
+
+/**
+ * atsc_content_advisory_descriptor structure.
+ */
+struct atsc_content_advisory_descriptor {
+	struct descriptor d;
+
+  EBIT2(uint8_t reserved		: 2; ,
+	uint8_t rating_region_count	: 6; );
+	/* struct atsc_content_advisory_entry entries[] */
+} __ucsi_packed;
+
+/**
+ * An entry in the entries field of a atsc_content_advisory_descriptor.
+ */
+struct atsc_content_advisory_entry {
+	uint8_t rating_region;
+	uint8_t rated_dimensions;
+	/* struct atsc_content_advisory_entry_dimension dimensions[] */
+	/* struct atsc_content_advisory_entry_part2 part2 */
+} __ucsi_packed;
+
+/**
+ * An entry in the entries field of a atsc_content_advisory_descriptor.
+ */
+struct atsc_content_advisory_entry_dimension {
+	uint8_t rating_dimension_j;
+  EBIT2(uint8_t reserved		: 4; ,
+	uint8_t rating_value		: 4; );
+} __ucsi_packed;
+
+/**
+ * Part2 of an atsc_content_advisory_entry.
+ */
+struct atsc_content_advisory_entry_part2 {
+	uint8_t rating_description_length;
+	/* struct atsc_text description */
+} __ucsi_packed;
+
+/**
+ * Process an atsc_content_advisory_descriptor.
+ *
+ * @param d Generic descriptor pointer.
+ * @return atsc_content_advisory_descriptor pointer, or NULL on error.
+ */
+static inline struct atsc_content_advisory_descriptor*
+	atsc_content_advisory_descriptor_codec(struct descriptor* d)
+{
+	struct atsc_content_advisory_descriptor *ret =
+		(struct atsc_content_advisory_descriptor *) d;
+	uint8_t *buf = (uint8_t*) d + 2;
+	int pos = 0;
+	int idx;
+
+	if (d->len < 1)
+		return NULL;
+	pos++;
+
+	for(idx = 0; idx < ret->rating_region_count; idx++) {
+		if (d->len < (pos + sizeof(struct atsc_content_advisory_entry)))
+			return NULL;
+		struct atsc_content_advisory_entry *entry =
+			(struct atsc_content_advisory_entry *) (buf + pos);
+		pos += sizeof(struct atsc_content_advisory_entry);
+
+		if (d->len < (pos + (sizeof(struct atsc_content_advisory_entry_dimension) *
+				  entry->rated_dimensions)))
+			return NULL;
+		pos += sizeof(struct atsc_content_advisory_entry_dimension) * entry->rated_dimensions;
+
+		if (d->len < (pos + sizeof(struct atsc_content_advisory_entry_part2)))
+			return NULL;
+		struct atsc_content_advisory_entry_part2 *part2 =
+				(struct atsc_content_advisory_entry_part2 *) (buf + pos);
+		pos += sizeof(struct atsc_content_advisory_entry_part2);
+
+		if (d->len < (pos + part2->rating_description_length))
+			return NULL;
+
+		if (atsc_text_validate(buf+pos, part2->rating_description_length))
+			return NULL;
+
+		pos += part2->rating_description_length;
+	}
+
+	return (struct atsc_content_advisory_descriptor*) d;
+}
+
+/**
+ * Iterator for entries field of a atsc_content_advisory_descriptor.
+ *
+ * @param d atsc_content_advisory_descriptor pointer.
+ * @param pos Variable holding a pointer to the current atsc_content_advisory_entry.
+ * @param idx Integer used to count which entry we are in.
+ */
+#define atsc_content_advisory_descriptor_entries_for_each(d, pos, idx) \
+	for ((pos) = atsc_content_advisory_descriptor_entries_first(d), idx=0; \
+	     (pos); \
+	     (pos) = atsc_content_advisory_descriptor_entries_next(d, pos, ++idx))
+
+/**
+ * Iterator for dimensions field of a atsc_content_advisory_entry.
+ *
+ * @param d atsc_content_advisory_entry pointer.
+ * @param pos Variable holding a pointer to the current atsc_content_advisory_entry_dimension.
+ * @param idx Integer used to count which dimension we are in.
+ */
+#define atsc_content_advisory_entry_dimensions_for_each(d, pos, idx) \
+	for ((pos) = atsc_content_advisory_entry_dimensions_first(d), idx=0; \
+	     (pos); \
+	     (pos) = atsc_content_advisory_entry_dimensions_next(d, pos, ++idx))
+
+/**
+ * Accessor for the part2 field of an atsc_content_advisory_entry.
+ *
+ * @param entry atsc_content_advisory_entry pointer.
+ * @return struct atsc_content_advisory_entry_part2 pointer.
+ */
+static inline struct atsc_content_advisory_entry_part2 *
+	atsc_content_advisory_entry_part2(struct atsc_content_advisory_entry *entry)
+{
+	int pos = sizeof(struct atsc_content_advisory_entry);
+	pos += entry->rated_dimensions * sizeof(struct atsc_content_advisory_entry_dimension);
+
+	return (struct atsc_content_advisory_entry_part2 *) (((uint8_t*) entry) + pos);
+}
+
+
+/**
+ * Accessor for the description field of an atsc_content_advisory_entry_part2.
+ *
+ * @param part2 atsc_content_advisory_entry_part2 pointer.
+ * @return Pointer to the atsc_text data, or NULL on error.
+ */
+static inline struct atsc_text*
+	atsc_content_advisory_entry_part2_description(struct atsc_content_advisory_entry_part2 *part2)
+{
+	uint8_t *txt = ((uint8_t*) part2) + sizeof(struct atsc_content_advisory_entry_part2);
+
+	return (struct atsc_text *) txt;
+}
+
+
+
+
+
+
+
+
+/******************************** PRIVATE CODE ********************************/
+static inline struct atsc_content_advisory_entry*
+	atsc_content_advisory_descriptor_entries_first(struct atsc_content_advisory_descriptor *d)
+{
+	if (d->rating_region_count == 0)
+		return NULL;
+
+	return (struct atsc_content_advisory_entry *)
+		((uint8_t*) d + sizeof(struct atsc_content_advisory_descriptor));
+}
+
+static inline struct atsc_content_advisory_entry*
+	atsc_content_advisory_descriptor_entries_next(struct atsc_content_advisory_descriptor *d,
+						      struct atsc_content_advisory_entry *pos,
+						      int idx)
+{
+	if (idx >= d->rating_region_count)
+		return NULL;
+	struct atsc_content_advisory_entry_part2 *part2 =
+		atsc_content_advisory_entry_part2(pos);
+
+	return (struct atsc_content_advisory_entry *)
+		((uint8_t *) part2 +
+		 sizeof(struct atsc_content_advisory_entry_part2) +
+		 part2->rating_description_length);
+}
+
+static inline struct atsc_content_advisory_entry_dimension*
+	atsc_content_advisory_entry_dimensions_first(struct atsc_content_advisory_entry *e)
+{
+	if (e->rated_dimensions == 0)
+		return NULL;
+
+	return (struct atsc_content_advisory_entry_dimension *)
+		((uint8_t*) e + sizeof(struct atsc_content_advisory_entry));
+}
+
+static inline struct atsc_content_advisory_entry_dimension*
+	atsc_content_advisory_entry_dimensions_next(struct atsc_content_advisory_entry *e,
+				   		    struct atsc_content_advisory_entry_dimension *pos,
+						    int idx)
+{
+	uint8_t *next =	(uint8_t *) pos + sizeof(struct atsc_content_advisory_entry_dimension);
+
+	if (idx >= e->rated_dimensions)
+		return NULL;
+	return (struct atsc_content_advisory_entry_dimension *) next;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif