Imported Upstream version 1.1.1+rev1207upstream/1.1.1+rev1207

1 files changed, 83 insertions, 0 deletions

diff --git a/lib/libucsi/mpeg/hierarchy_descriptor.h b/lib/libucsi/mpeg/hierarchy_descriptor.h
new file mode 100644
index 0000000..a38539d
--- /dev/null
+++ b/lib/libucsi/mpeg/hierarchy_descriptor.h
@@ -0,0 +1,83 @@
+/*
+ * 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