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authorMark Purcell <msp@debian.org>2008-06-22 11:00:40 +1000
committeretobi <git@e-tobi.net>2013-09-03 09:48:42 +0200
commit891c51ff368ed700dec6025eeb47ce4d96f76418 (patch)
tree3729664829e4faa691d403274f38eb10890b533c /lib/libucsi/atsc/eit_section.h
parent1c6e1f28f54ec2606c23936c1d8689f2be55a86c (diff)
parentab959d7b4194715870128e616b8e29d4a101e488 (diff)
downloadlinux-dvb-apps-891c51ff368ed700dec6025eeb47ce4d96f76418.tar.gz
Imported Debian patch 1.1.1+rev1207-1debian/1.1.1+rev1207-1
Diffstat (limited to 'lib/libucsi/atsc/eit_section.h')
-rw-r--r--lib/libucsi/atsc/eit_section.h191
1 files changed, 191 insertions, 0 deletions
diff --git a/lib/libucsi/atsc/eit_section.h b/lib/libucsi/atsc/eit_section.h
new file mode 100644
index 0000000..84bef16
--- /dev/null
+++ b/lib/libucsi/atsc/eit_section.h
@@ -0,0 +1,191 @@
+/*
+ * 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_EIT_SECTION_H
+#define _UCSI_ATSC_EIT_SECTION_H 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/atsc/section.h>
+#include <libucsi/atsc/types.h>
+
+/**
+ * atsc_eit_section structure.
+ */
+struct atsc_eit_section {
+ struct atsc_section_psip head;
+
+ uint8_t num_events_in_section;
+ /* struct atsc_eit_event events[] */
+} __ucsi_packed;
+
+struct atsc_eit_event {
+ EBIT2(uint16_t reserved : 2; ,
+ uint16_t event_id :14; );
+ atsctime_t start_time;
+ EBIT4(uint32_t reserved1 : 2; ,
+ uint32_t ETM_location : 2; ,
+ uint32_t length_in_seconds :20; ,
+ uint32_t title_length : 8; );
+ /* struct atsc_text title_text */
+ /* struct atsc_eit_event_part2 part2 */
+} __ucsi_packed;
+
+struct atsc_eit_event_part2 {
+ EBIT2(uint16_t reserved : 4; ,
+ uint16_t descriptors_length :12; );
+ /* struct descriptor descriptors[] */
+} __ucsi_packed;
+
+
+/**
+ * Process a atsc_eit_section.
+ *
+ * @param section Pointer to an atsc_section_psip structure.
+ * @return atsc_eit_section pointer, or NULL on error.
+ */
+struct atsc_eit_section *atsc_eit_section_codec(struct atsc_section_psip *section);
+
+/**
+ * Accessor for the source_id field of an EIT.
+ *
+ * @param eit EIT pointer.
+ * @return The source_id .
+ */
+static inline uint16_t atsc_eit_section_source_id(struct atsc_eit_section *eit)
+{
+ return eit->head.ext_head.table_id_ext;
+}
+
+/**
+ * Iterator for the events field in an atsc_eit_section.
+ *
+ * @param eit atsc_eit_section pointer.
+ * @param pos Variable containing a pointer to the current atsc_eit_event.
+ * @param idx Integer used to count which event we are in.
+ */
+#define atsc_eit_section_events_for_each(eit, pos, idx) \
+ for ((pos) = atsc_eit_section_events_first(eit), idx=0; \
+ (pos); \
+ (pos) = atsc_eit_section_events_next(eit, pos, ++idx))
+
+/**
+ * Accessor for the title_text field of an atsc_eit_event.
+ *
+ * @param event atsc_eit_event pointer.
+ * @return struct atsc_text pointer, or NULL on error.
+ */
+static inline struct atsc_text *atsc_eit_event_name_title_text(struct atsc_eit_event *event)
+{
+ if (event->title_length == 0)
+ return NULL;
+
+ return (struct atsc_text*)(((uint8_t*) event) + sizeof(struct atsc_eit_event));
+}
+
+/**
+ * Accessor for the part2 field of an atsc_eit_event.
+ *
+ * @param event atsc_eit_event pointer.
+ * @return struct atsc_eit_event_part2 pointer.
+ */
+static inline struct atsc_eit_event_part2 *atsc_eit_event_part2(struct atsc_eit_event *event)
+{
+ return (struct atsc_eit_event_part2 *)
+ (((uint8_t*) event) + sizeof(struct atsc_eit_event) + event->title_length);
+}
+
+/**
+ * Iterator for the descriptors field in a atsc_eit_section structure.
+ *
+ * @param part2 atsc_eit_event_part2 pointer.
+ * @param pos Variable containing a pointer to the current descriptor.
+ */
+#define atsc_eit_event_part2_descriptors_for_each(part2, pos) \
+ for ((pos) = atsc_eit_event_part2_descriptors_first(part2); \
+ (pos); \
+ (pos) = atsc_eit_event_part2_descriptors_next(part2, pos))
+
+
+
+
+
+
+
+
+
+
+
+/******************************** PRIVATE CODE ********************************/
+static inline struct atsc_eit_event *
+ atsc_eit_section_events_first(struct atsc_eit_section *eit)
+{
+ size_t pos = sizeof(struct atsc_eit_section);
+
+ if (eit->num_events_in_section == 0)
+ return NULL;
+
+ return (struct atsc_eit_event*) (((uint8_t *) eit) + pos);
+}
+
+static inline struct atsc_eit_event *
+ atsc_eit_section_events_next(struct atsc_eit_section *eit,
+ struct atsc_eit_event *pos,
+ int idx)
+{
+ if (idx >= eit->num_events_in_section)
+ return NULL;
+
+ struct atsc_eit_event_part2 *part2 = atsc_eit_event_part2(pos);
+ int len = sizeof(struct atsc_eit_event_part2);
+ len += part2->descriptors_length;
+
+ return (struct atsc_eit_event *) (((uint8_t*) part2) + len);
+}
+
+static inline struct descriptor *
+ atsc_eit_event_part2_descriptors_first(struct atsc_eit_event_part2 *part2)
+{
+ size_t pos = sizeof(struct atsc_eit_event_part2);
+
+ if (part2->descriptors_length == 0)
+ return NULL;
+
+ return (struct descriptor*) (((uint8_t *) part2) + pos);
+}
+
+static inline struct descriptor *
+ atsc_eit_event_part2_descriptors_next(struct atsc_eit_event_part2 *part2,
+ struct descriptor *pos)
+{
+ return next_descriptor((uint8_t*) part2 + sizeof(struct atsc_eit_event_part2),
+ part2->descriptors_length,
+ pos);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif