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-rw-r--r--lib/libucsi/mpeg/tsdt_section.h94
1 files changed, 94 insertions, 0 deletions
diff --git a/lib/libucsi/mpeg/tsdt_section.h b/lib/libucsi/mpeg/tsdt_section.h
new file mode 100644
index 0000000..2bbae02
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+++ b/lib/libucsi/mpeg/tsdt_section.h
@@ -0,0 +1,94 @@
+/*
+ * 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_MPEG_TSDT_SECTION_H
+#define _UCSI_MPEG_TSDT_SECTION_H 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/section.h>
+
+/**
+ * mpeg_tsdt_section structure.
+ */
+struct mpeg_tsdt_section {
+ struct section_ext head;
+
+ /* struct descriptor descriptors[] */
+} __ucsi_packed;
+
+/**
+ * Process an mpeg_tsdt_section structure.
+ *
+ * @param section Pointer to the section_ext structure.
+ * @return Pointer to the mpeg_tsdt_section structure, or NULL on error.
+ */
+extern struct mpeg_tsdt_section *mpeg_tsdt_section_codec(struct section_ext *section);
+
+/**
+ * Convenience iterator for descriptors field.
+ *
+ * @param tsdt Pointer to the mpeg_tsdt_section structure.
+ * @param pos Variable holding a pointer to the current descriptor.
+ */
+#define mpeg_tsdt_section_descriptors_for_each(tsdt, pos) \
+ for ((pos) = mpeg_tsdt_section_descriptors_first(tsdt); \
+ (pos); \
+ (pos) = mpeg_tsdt_section_descriptors_next(tsdt, pos))
+
+
+
+
+
+
+
+
+
+
+/******************************** PRIVATE CODE ********************************/
+static inline struct descriptor *
+ mpeg_tsdt_section_descriptors_first(struct mpeg_tsdt_section * tsdt)
+{
+ size_t pos = sizeof(struct mpeg_tsdt_section);
+
+ if (pos >= section_ext_length(&tsdt->head))
+ return NULL;
+
+ return (struct descriptor*)((uint8_t *) tsdt + pos);
+}
+
+static inline struct descriptor *
+ mpeg_tsdt_section_descriptors_next(struct mpeg_tsdt_section *tsdt,
+ struct descriptor* pos)
+{
+ return next_descriptor((uint8_t *) tsdt + sizeof(struct mpeg_tsdt_section),
+ section_ext_length(&tsdt->head) - sizeof(struct mpeg_tsdt_section),
+ pos);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif