1 files changed, 201 insertions, 0 deletions
diff --git a/lib/libucsi/dvb/cell_list_descriptor.h b/lib/libucsi/dvb/cell_list_descriptor.h
new file mode 100644
index 0000000..ddbaf2c
--- /dev/null
+++ b/lib/libucsi/dvb/cell_list_descriptor.h
@@ -0,0 +1,201 @@
+/*
+ * 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_CELL_LIST_DESCRIPTOR
+#define _UCSI_DVB_CELL_LIST_DESCRIPTOR 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/descriptor.h>
+#include <libucsi/endianops.h>
+
+/**
+ * dvb_cell_list_descriptor structure.
+ */
+struct dvb_cell_list_descriptor {
+	struct descriptor d;
+
+	/* struct dvb_cell_list_entry cells[] */
+} __ucsi_packed;
+
+/**
+ * An entry in the cells field of a dvb_cell_list_descriptor.
+ */
+struct dvb_cell_list_entry {
+	uint16_t cell_id;
+	uint16_t cell_latitude;
+	uint16_t cell_longitude;
+  EBIT3(uint32_t cell_extend_of_latitude	:12; ,
+	uint32_t cell_extend_of_longitude	:12; ,
+	uint32_t subcell_info_loop_length	: 8; );
+	/* struct dvb_subcell_list_entry subcells[] */
+} __ucsi_packed;
+
+/**
+ * An entry in the subcells field of a dvb_cell_list_entry.
+ */
+struct dvb_subcell_list_entry {
+	uint8_t cell_id_extension;
+	uint16_t subcell_latitude;
+	uint16_t subcell_longitude;
+  EBIT2(uint32_t subcell_extend_of_latitude	:12; ,
+	uint32_t subcell_extend_of_longitude	:12; );
+} __ucsi_packed;
+
+/**
+ * Process a dvb_cell_list_descriptor.
+ *
+ * @param d Generic descriptor pointer.
+ * @return dvb_cell_list_descriptor pointer, or NULL on error.
+ */
+static inline struct dvb_cell_list_descriptor*
+	dvb_cell_list_descriptor_codec(struct descriptor* d)
+{
+	uint32_t pos = 0;
+	uint32_t pos2 = 0;
+	uint8_t* buf = (uint8_t*) d + 2;
+	uint32_t len = d->len;
+
+	while(pos < len) {
+		struct dvb_cell_list_entry *e =
+			(struct dvb_cell_list_entry*) (buf+pos);
+
+		if ((pos + sizeof(struct dvb_cell_list_entry)) > len)
+			return NULL;
+
+		bswap16(buf+pos);
+		bswap16(buf+pos+2);
+		bswap16(buf+pos+4);
+		bswap32(buf+pos+6);
+
+		pos += sizeof(struct dvb_cell_list_entry);
+
+		if ((pos + e->subcell_info_loop_length) > len)
+			return NULL;
+
+		if (e->subcell_info_loop_length % sizeof(struct dvb_subcell_list_entry))
+			return NULL;
+
+		pos2 = 0;
+		while(pos2 < e->subcell_info_loop_length) {
+			bswap16(buf+pos+pos2+1);
+			bswap16(buf+pos+pos2+3);
+			bswap24(buf+pos+pos2+5);
+
+			pos2 += sizeof(struct dvb_subcell_list_entry);
+		}
+
+		pos += e->subcell_info_loop_length;
+	}
+
+	return (struct dvb_cell_list_descriptor*) d;
+}
+
+/**
+ * Iterator for the cells field of a dvb_cell_list_descriptor.
+ *
+ * @param d dvb_cell_list_descriptor pointer.
+ * @param pos Variable holding a pointer to the current dvb_cell_list_entry.
+ */
+#define dvb_cell_list_descriptor_cells_for_each(d, pos) \
+	for ((pos) = dvb_cell_list_descriptor_cells_first(d); \
+	     (pos); \
+	     (pos) = dvb_cell_list_descriptor_cells_next(d, pos))
+
+/**
+ * Iterator for the subcells field of a dvb_cell_list_entry.
+ *
+ * @param cell dvb_cell_list_entry pointer.
+ * @param pos Variable holding a pointer to the current dvb_subcell_list_entry.
+ */
+#define dvb_cell_list_entry_subcells_for_each(cell, pos) \
+	for ((pos) = dvb_cell_list_entry_subcells_first(cell); \
+	     (pos); \
+	     (pos) = dvb_cell_list_entry_subcells_next(cell, pos))
+
+
+
+
+
+
+
+
+
+
+/******************************** PRIVATE CODE ********************************/
+static inline struct dvb_cell_list_entry*
+	dvb_cell_list_descriptor_cells_first(struct dvb_cell_list_descriptor *d)
+{
+	if (d->d.len == 0)
+		return NULL;
+
+	return (struct dvb_cell_list_entry *)
+		((uint8_t*) d + sizeof(struct dvb_cell_list_descriptor));
+}
+
+static inline struct dvb_cell_list_entry*
+	dvb_cell_list_descriptor_cells_next(struct dvb_cell_list_descriptor *d,
+					    struct dvb_cell_list_entry *pos)
+{
+	uint8_t *end = (uint8_t*) d + 2 + d->d.len;
+	uint8_t *next =	(uint8_t *) pos +
+			sizeof(struct dvb_cell_list_entry) +
+			pos->subcell_info_loop_length;
+
+	if (next >= end)
+		return NULL;
+
+	return (struct dvb_cell_list_entry *) next;
+}
+
+static inline struct dvb_subcell_list_entry*
+	dvb_cell_list_entry_subcells_first(struct dvb_cell_list_entry *d)
+{
+	if (d->subcell_info_loop_length == 0)
+		return NULL;
+
+	return (struct dvb_subcell_list_entry*)
+		((uint8_t*) d + sizeof(struct dvb_cell_list_entry));
+}
+
+static inline struct dvb_subcell_list_entry*
+	dvb_cell_list_entry_subcells_next(struct dvb_cell_list_entry *d,
+					  struct dvb_subcell_list_entry *pos)
+{
+	uint8_t *next = (uint8_t*) pos + sizeof(struct dvb_subcell_list_entry);
+	uint8_t *end = (uint8_t*) d +
+			sizeof(struct dvb_cell_list_entry) +
+			d->subcell_info_loop_length;
+
+	if (next >= end)
+		return NULL;
+
+	return (struct dvb_subcell_list_entry *) next;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif