Imported Upstream version 1.1.1+rev1207upstream/1.1.1+rev1207

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