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-rw-r--r--lib/libucsi/atsc/genre_descriptor.h82
1 files changed, 82 insertions, 0 deletions
diff --git a/lib/libucsi/atsc/genre_descriptor.h b/lib/libucsi/atsc/genre_descriptor.h
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+++ b/lib/libucsi/atsc/genre_descriptor.h
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+/*
+ * 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_GENRE_DESCRIPTOR
+#define _UCSI_ATSC_GENRE_DESCRIPTOR 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/descriptor.h>
+#include <libucsi/endianops.h>
+#include <libucsi/types.h>
+
+/**
+ * atsc_genre_descriptor structure.
+ */
+struct atsc_genre_descriptor {
+ struct descriptor d;
+
+ EBIT2(uint8_t reserved : 3; ,
+ uint8_t attribute_count : 5; );
+ /* uint8_t attributes[] */
+} __ucsi_packed;
+
+/**
+ * Process an atsc_genre_descriptor.
+ *
+ * @param d Generic descriptor pointer.
+ * @return atsc_genre_descriptor pointer, or NULL on error.
+ */
+static inline struct atsc_genre_descriptor*
+ atsc_genre_descriptor_codec(struct descriptor* d)
+{
+ struct atsc_genre_descriptor *ret =
+ (struct atsc_genre_descriptor *) d;
+
+ if (d->len < 1)
+ return NULL;
+
+ if (d->len != (1 + ret->attribute_count))
+ return NULL;
+
+ return (struct atsc_genre_descriptor*) d;
+}
+
+/**
+ * Accessor for the attributes field of an atsc_genre_descriptor.
+ *
+ * @param d atsc_genre_descriptor pointer.
+ * @return Pointer to the attributes.
+ */
+static inline uint8_t*
+ atsc_genre_descriptor_attributes(struct atsc_genre_descriptor *d)
+{
+ return ((uint8_t*) d) + sizeof(struct atsc_genre_descriptor);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif