1 files changed, 124 insertions, 0 deletions
diff --git a/lib/libucsi/mpeg/iso_639_language_descriptor.h b/lib/libucsi/mpeg/iso_639_language_descriptor.h
new file mode 100644
index 0000000..5b5aac0
--- /dev/null
+++ b/lib/libucsi/mpeg/iso_639_language_descriptor.h
@@ -0,0 +1,124 @@
+/*
+ * 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_ISO_639_LANGUAGE_DESCRIPTOR
+#define _UCSI_MPEG_ISO_639_LANGUAGE_DESCRIPTOR 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/descriptor.h>
+#include <libucsi/endianops.h>
+#include <libucsi/types.h>
+
+/**
+ * Possible values for audio_type.
+ */
+enum {
+	MPEG_AUDIO_TYPE_CLEAN_EFFECTS 			= 0x01,
+	MPEG_AUDIO_TYPE_HEARING_IMPAIRED 		= 0x02,
+	MPEG_AUDIO_TYPE_VISUAL_IMPAIRED_COMMENTARY 	= 0x03,
+};
+
+/**
+ * mpeg_iso_639_language_descriptor structure.
+ */
+struct mpeg_iso_639_language_descriptor {
+	struct descriptor d;
+
+	/* struct mpeg_iso_639_language_code languages[] */
+} __ucsi_packed;
+
+/**
+ * An entry in the mpeg_iso_639_language_descriptor languages field.
+ */
+struct mpeg_iso_639_language_code {
+	iso639lang_t language_code;
+	uint8_t audio_type;
+} __ucsi_packed;
+
+/**
+ * Process an mpeg_iso_639_language_descriptor.
+ *
+ * @param d Generic descriptor structure.
+ * @return Pointer to an mpeg_iso_639_language_descriptor structure, or NULL
+ * on error.
+ */
+static inline struct mpeg_iso_639_language_descriptor*
+	mpeg_iso_639_language_descriptor_codec(struct descriptor* d)
+{
+	if (d->len % sizeof(struct mpeg_iso_639_language_code))
+		return NULL;
+
+	return (struct mpeg_iso_639_language_descriptor*) d;
+}
+
+/**
+ * Convenience iterator for the languages field of an mpeg_iso_639_language_descriptor
+ *
+ * @param d Pointer to the mpeg_iso_639_language_descriptor structure.
+ * @param pos Variable holding a pointer to the current entry.
+ */
+#define mpeg_iso_639_language_descriptor_languages_for_each(_d, _pos) \
+	for ((_pos) = mpeg_iso_639_language_descriptor_languages_first(_d); \
+	     (_pos); \
+	     (_pos) = mpeg_iso_639_language_descriptor_languages_next(_d, _pos))
+
+
+
+
+
+
+
+
+
+
+/******************************** PRIVATE CODE ********************************/
+static inline struct mpeg_iso_639_language_code*
+	mpeg_iso_639_language_descriptor_languages_first(struct mpeg_iso_639_language_descriptor *d)
+{
+	if (d->d.len < sizeof(struct mpeg_iso_639_language_code))
+		return NULL;
+
+	return (struct mpeg_iso_639_language_code *)
+		((uint8_t*) d + sizeof(struct mpeg_iso_639_language_descriptor));
+}
+
+static inline struct mpeg_iso_639_language_code*
+	mpeg_iso_639_language_descriptor_languages_next(struct mpeg_iso_639_language_descriptor *d,
+						        struct mpeg_iso_639_language_code *pos)
+{
+	uint8_t *end = (uint8_t*) d + 2 + d->d.len;
+	uint8_t *next =	(uint8_t *) pos + sizeof(struct mpeg_iso_639_language_code);
+
+	if (next >= end)
+		return NULL;
+
+	return (struct mpeg_iso_639_language_code *) next;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif