1 files changed, 116 insertions, 0 deletions
diff --git a/lib/libucsi/dvb/content_descriptor.h b/lib/libucsi/dvb/content_descriptor.h
new file mode 100644
index 0000000..d2a63a0
--- /dev/null
+++ b/lib/libucsi/dvb/content_descriptor.h
@@ -0,0 +1,116 @@
+/*
+ * 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_DVB_CONTENT_DESCRIPTOR
+#define _UCSI_DVB_CONTENT_DESCRIPTOR 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/descriptor.h>
+#include <libucsi/endianops.h>
+
+// FIXME: the nibbles
+
+/**
+ * dvb_content_descriptor structure.
+ */
+struct dvb_content_descriptor {
+	struct descriptor d;
+
+	/* struct dvb_content_nibble nibbles[] */
+} __ucsi_packed;
+
+/**
+ * An entry in the nibbles field of a dvb_content_descriptor.
+ */
+struct dvb_content_nibble {
+  EBIT2(uint8_t content_nibble_level_1	: 4; ,
+	uint8_t content_nibble_level_2	: 4; );
+  EBIT2(uint8_t user_nibble_1		: 4; ,
+	uint8_t user_nibble_2		: 4; );
+} __ucsi_packed;
+
+/**
+ * Process a dvb_content_descriptor.
+ *
+ * @param d Generic descriptor pointer.
+ * @return dvb_content_descriptor pointer, or NULL on error.
+ */
+static inline struct dvb_content_descriptor*
+	dvb_content_descriptor_codec(struct descriptor* d)
+{
+	if (d->len % sizeof(struct dvb_content_nibble))
+		return NULL;
+
+	return (struct dvb_content_descriptor*) d;
+}
+
+/**
+ * Iterator for the nibbles field of a dvb_content_descriptor.
+ *
+ * @param d dvb_content_descriptor pointer.
+ * @param pos Variable containing a pointer to the current dvb_content_nibble.
+ */
+#define dvb_content_descriptor_nibbles_for_each(d, pos) \
+	for ((pos) = dvb_content_descriptor_nibbles_first(d); \
+	     (pos); \
+	     (pos) = dvb_content_descriptor_nibbles_next(d, pos))
+
+
+
+
+
+
+
+
+
+/******************************** PRIVATE CODE ********************************/
+static inline struct dvb_content_nibble*
+	dvb_content_descriptor_nibbles_first(struct dvb_content_descriptor *d)
+{
+	if (d->d.len == 0)
+		return NULL;
+
+	return (struct dvb_content_nibble *)
+		((uint8_t*) d + sizeof(struct dvb_content_descriptor));
+}
+
+static inline struct dvb_content_nibble*
+	dvb_content_descriptor_nibbles_next(struct dvb_content_descriptor *d,
+					    struct dvb_content_nibble *pos)
+{
+	uint8_t *end = (uint8_t*) d + 2 + d->d.len;
+	uint8_t *next =	(uint8_t *) pos + sizeof(struct dvb_content_nibble);
+
+	if (next >= end)
+		return NULL;
+
+	return (struct dvb_content_nibble *) next;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif