1 files changed, 157 insertions, 0 deletions
diff --git a/lib/libucsi/dvb/sdt_section.h b/lib/libucsi/dvb/sdt_section.h
new file mode 100644
index 0000000..03a8569
--- /dev/null
+++ b/lib/libucsi/dvb/sdt_section.h
@@ -0,0 +1,157 @@
+/*
+ * 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_SDT_SECTION_H
+#define _UCSI_DVB_SDT_SECTION_H 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/section.h>
+
+/**
+ * dvb_sdt_section structure.
+ */
+struct dvb_sdt_section {
+	struct section_ext head;
+
+	uint16_t original_network_id;
+	uint8_t reserved;
+	/* struct dvb_sdt_service services[] */
+} __ucsi_packed;
+
+/**
+ * An entry in the services field of a dvb_sdt_section.
+ */
+struct dvb_sdt_service {
+	uint16_t service_id;
+  EBIT3(uint8_t	reserved			: 6; ,
+	uint8_t eit_schedule_flag		: 1; ,
+	uint8_t eit_present_following_flag	: 1; );
+  EBIT3(uint16_t running_status			: 3; ,
+	uint16_t free_ca_mode			: 1; ,
+	uint16_t descriptors_loop_length	:12; );
+	/* struct descriptor descriptors[] */
+} __ucsi_packed;
+
+/**
+ * Process a dvb_sdt_section.
+ *
+ * @param section Pointer to a generic section_ext structure.
+ * @return dvb_sdt_section pointer, or NULL on error.
+ */
+struct dvb_sdt_section * dvb_sdt_section_codec(struct section_ext *section);
+
+/**
+ * Accessor for the transport_stream_id field of an SDT.
+ *
+ * @param sdt SDT pointer.
+ * @return The transport_stream_id.
+ */
+static inline uint16_t dvb_sdt_section_transport_stream_id(struct dvb_sdt_section *sdt)
+{
+	return sdt->head.table_id_ext;
+}
+
+/**
+ * Iterator for the services field in a dvb_sdt_section.
+ *
+ * @param sdt dvb_sdt_section pointer.
+ * @param pos Variable containing a pointer to the current dvb_sdt_service.
+ */
+#define dvb_sdt_section_services_for_each(sdt, pos) \
+	for ((pos) = dvb_sdt_section_services_first(sdt); \
+	     (pos); \
+	     (pos) = dvb_sdt_section_services_next(sdt, pos))
+
+/**
+ * Iterator for the descriptors field in a dvb_sdt_service.
+ *
+ * @param service dvb_sdt_service pointer.
+ * @param pos Variable containing a pointer to the current descriptor.
+ */
+#define dvb_sdt_service_descriptors_for_each(service, pos) \
+	for ((pos) = dvb_sdt_service_descriptors_first(service); \
+	     (pos); \
+	     (pos) = dvb_sdt_service_descriptors_next(service, pos))
+
+
+
+
+
+
+
+
+
+
+
+/******************************** PRIVATE CODE ********************************/
+static inline struct dvb_sdt_service *
+	dvb_sdt_section_services_first(struct dvb_sdt_section * sdt)
+{
+	size_t pos = sizeof(struct dvb_sdt_section);
+
+	if (pos >= section_ext_length(&sdt->head))
+		return NULL;
+
+	return (struct dvb_sdt_service*) ((uint8_t *) sdt + pos);
+}
+
+static inline struct dvb_sdt_service *
+	dvb_sdt_section_services_next(struct dvb_sdt_section * sdt,
+				      struct dvb_sdt_service * pos)
+{
+	uint8_t *end = (uint8_t*) sdt + section_ext_length(&sdt->head);
+	uint8_t *next = (uint8_t*) pos + sizeof(struct dvb_sdt_service) +
+			pos->descriptors_loop_length;
+
+	if (next >= end)
+		return NULL;
+
+	return (struct dvb_sdt_service *) next;
+}
+
+static inline struct descriptor *
+	dvb_sdt_service_descriptors_first(struct dvb_sdt_service *svc)
+{
+	if (svc->descriptors_loop_length == 0)
+		return NULL;
+
+	return (struct descriptor *)
+		((uint8_t*) svc + sizeof(struct dvb_sdt_service));
+}
+
+static inline struct descriptor *
+	dvb_sdt_service_descriptors_next(struct dvb_sdt_service *svc,
+					 struct descriptor* pos)
+{
+	return next_descriptor((uint8_t*) svc + sizeof(struct dvb_sdt_service),
+			       svc->descriptors_loop_length,
+			       pos);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif