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authoretobi <git@e-tobi.net>2013-09-03 09:48:41 +0200
committeretobi <git@e-tobi.net>2013-09-03 09:48:41 +0200
commitab959d7b4194715870128e616b8e29d4a101e488 (patch)
tree61a746231d30817be73416a7d67763fd677a1042 /lib/libucsi/mpeg/hierarchy_descriptor.h
parent6b350466c4902c5b137e0efaf1d189128a7f18f5 (diff)
downloadlinux-dvb-apps-ab959d7b4194715870128e616b8e29d4a101e488.tar.gz
Imported Upstream version 1.1.1+rev1207upstream/1.1.1+rev1207
Diffstat (limited to 'lib/libucsi/mpeg/hierarchy_descriptor.h')
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1 files changed, 83 insertions, 0 deletions
diff --git a/lib/libucsi/mpeg/hierarchy_descriptor.h b/lib/libucsi/mpeg/hierarchy_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_MPEG_HIERARCHY_DESCRIPTOR
+#define _UCSI_MPEG_HIERARCHY_DESCRIPTOR 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/descriptor.h>
+#include <libucsi/endianops.h>
+
+/**
+ * Hierarchy type values.
+ */
+enum {
+ MPEG_HIERARCHY_TYPE_ISO13818_2_SPATIAL_SCALABILITY = 0x01,
+ MPEG_HIERARCHY_TYPE_ISO13818_2_SNR_SCALABILITY = 0x02,
+ MPEG_HIERARCHY_TYPE_ISO13818_2_TEMPORAL_SCALABILITY = 0x03,
+ MPEG_HIERARCHY_TYPE_ISO13818_2_DATA_PARTITIONING = 0x04,
+ MPEG_HIERARCHY_TYPE_ISO13818_3_EXTENSION_BITSTREAM = 0x05,
+ MPEG_HIERARCHY_TYPE_ISO13818_1_PRIVATE_BITSTREAM = 0x06,
+ MPEG_HIERARCHY_TYPE_ISO13818_2_MULTI_VIEW_PROFILE = 0x07,
+ MPEG_HIERARCHY_TYPE_BASE_LAYER = 0x0f,
+};
+
+
+/**
+ * mpeg_hierarchy_descriptor structure.
+ */
+struct mpeg_hierarchy_descriptor {
+ struct descriptor d;
+
+ EBIT2(uint8_t reserved_1 : 4; ,
+ uint8_t hierarchy_type : 4; );
+ EBIT2(uint8_t reserved_2 : 2; ,
+ uint8_t hierarchy_layer_index : 6; );
+ EBIT2(uint8_t reserved_3 : 2; ,
+ uint8_t hierarchy_embedded_layer_index : 6; );
+ EBIT2(uint8_t reserved_4 : 2; ,
+ uint8_t hierarchy_channel : 6; );
+} __ucsi_packed;
+
+/**
+ * Process an mpeg_hierarchy_descriptor.
+ *
+ * @param d Generic descriptor structure.
+ * @return Pointer to mpeg_hierarchy_descriptor structure, or NULL on error.
+ */
+static inline struct mpeg_hierarchy_descriptor*
+ mpeg_hierarchy_descriptor_codec(struct descriptor* d)
+{
+ if (d->len != (sizeof(struct mpeg_hierarchy_descriptor) - 2))
+ return NULL;
+
+ return (struct mpeg_hierarchy_descriptor*) d;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif