1 files changed, 149 insertions, 0 deletions
diff --git a/lib/libucsi/dvb/multilingual_component_descriptor.h b/lib/libucsi/dvb/multilingual_component_descriptor.h
new file mode 100644
index 0000000..ab156af
--- /dev/null
+++ b/lib/libucsi/dvb/multilingual_component_descriptor.h
@@ -0,0 +1,149 @@
+/*
+ * 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_MULTILINGUAL_COMPONENT_DESCRIPTOR
+#define _UCSI_DVB_MULTILINGUAL_COMPONENT_DESCRIPTOR 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/descriptor.h>
+#include <libucsi/endianops.h>
+#include <libucsi/types.h>
+
+/**
+ * dvb_multilingual_component_descriptor structure.
+ */
+struct dvb_multilingual_component_descriptor {
+	struct descriptor d;
+
+	uint8_t component_tag;
+	/* struct dvb_multilingual_component components[] */
+} __ucsi_packed;
+
+/**
+ * An entry in the components field of a dvb_multilingual_component_descriptor.
+ */
+struct dvb_multilingual_component {
+	iso639lang_t language_code;
+	uint8_t text_description_length;
+	/* uint8_t text_char[] */
+} __ucsi_packed;
+
+/**
+ * Process a dvb_multilingual_component_descriptor.
+ *
+ * @param d Generic descriptor pointer.
+ * @return dvb_multilingual_component_descriptor pointer, or NULL on error.
+ */
+static inline struct dvb_multilingual_component_descriptor*
+	dvb_multilingual_component_descriptor_codec(struct descriptor* d)
+{
+	uint8_t* buf = (uint8_t*) d + 2;
+	uint32_t pos = sizeof(struct dvb_multilingual_component_descriptor) - 2;
+	uint32_t len = d->len;
+
+	if (pos > len)
+		return NULL;
+
+	while(pos < len) {
+		struct dvb_multilingual_component *e =
+			(struct dvb_multilingual_component*) (buf+pos);
+
+		pos += sizeof(struct dvb_multilingual_component);
+
+		if (pos > len)
+			return NULL;
+
+		pos += e->text_description_length;
+
+		if (pos > len)
+			return NULL;
+	}
+
+	return (struct dvb_multilingual_component_descriptor*) d;
+}
+
+/**
+ * Iterator for entries in the components field of a dvb_multilingual_component_descriptor.
+ *
+ * @param d Generic descriptor pointer.
+ * @param pos Variable containing a pointer to the current dvb_multilingual_component.
+ */
+#define dvb_multilingual_component_descriptor_components_for_each(d, pos) \
+	for ((pos) = dvb_multilingual_component_descriptor_components_first(d); \
+	     (pos); \
+	     (pos) = dvb_multilingual_component_descriptor_components_next(d, pos))
+
+/**
+ * Accessor for the text_char field in a dvb_multilingual_component.
+ *
+ * @param e dvb_multilingual_component pointer.
+ * @return Pointer to the field.
+ */
+static inline uint8_t *
+	dvb_multilingual_component_text_char(struct dvb_multilingual_component *e)
+{
+	return (uint8_t *) e + sizeof(struct dvb_multilingual_component);
+}
+
+
+
+
+
+
+
+
+
+
+/******************************** PRIVATE CODE ********************************/
+static inline struct dvb_multilingual_component*
+	dvb_multilingual_component_descriptor_components_first(struct dvb_multilingual_component_descriptor *d)
+{
+	if (d->d.len == 1)
+		return NULL;
+
+	return (struct dvb_multilingual_component *)
+		((uint8_t*) d + sizeof(struct dvb_multilingual_component_descriptor));
+}
+
+static inline struct dvb_multilingual_component*
+	dvb_multilingual_component_descriptor_components_next(struct dvb_multilingual_component_descriptor *d,
+							      struct dvb_multilingual_component *pos)
+{
+	uint8_t *end = (uint8_t*) d + 2 + d->d.len;
+	uint8_t *next =	(uint8_t *) pos +
+			sizeof(struct dvb_multilingual_component) +
+			pos->text_description_length;
+
+	if (next >= end)
+		return NULL;
+
+	return (struct dvb_multilingual_component *) next;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif