1 files changed, 116 insertions, 0 deletions
diff --git a/lib/libucsi/dvb/s2_satellite_delivery_descriptor.h b/lib/libucsi/dvb/s2_satellite_delivery_descriptor.h
new file mode 100644
index 0000000..8f9fea8
--- /dev/null
+++ b/lib/libucsi/dvb/s2_satellite_delivery_descriptor.h
@@ -0,0 +1,116 @@
+/*
+ * 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_S2_SATELLITE_DELIVERY_DESCRIPTOR
+#define _UCSI_DVB_S2_SATELLITE_DELIVERY_DESCRIPTOR 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/descriptor.h>
+#include <libucsi/endianops.h>
+
+/**
+ * dvb_s2_satellite_delivery_descriptor structure.
+ */
+struct dvb_s2_satellite_delivery_descriptor {
+	struct descriptor d;
+
+  EBIT4(uint8_t scrambling_sequence_selector	: 1; ,
+	uint8_t multiple_input_stream		: 1; ,
+	uint8_t backwards_compatability		: 1; ,
+	uint8_t reserved			: 5; );
+	/* uint32_t scrambling_sequence_index if scrambling_sequence_selector = 1 */
+	/* uint8_t input_stream_id if multiple_input_stream = 1 */
+} __ucsi_packed;
+
+/**
+ * Process a dvb_s2_satellite_delivery_descriptor.
+ *
+ * @param d Pointer to a generic descriptor structure.
+ * @return dvb_s2_satellite_delivery_descriptor pointer, or NULL on error.
+ */
+static inline struct dvb_s2_satellite_delivery_descriptor*
+	dvb_s2_satellite_delivery_descriptor_codec(struct descriptor* d)
+{
+	struct dvb_s2_satellite_delivery_descriptor *s2 =
+			(struct dvb_s2_satellite_delivery_descriptor*) d;
+
+	if (d->len < (sizeof(struct dvb_s2_satellite_delivery_descriptor) - 2))
+		return NULL;
+
+	int len = sizeof(struct dvb_s2_satellite_delivery_descriptor);
+	if (s2->scrambling_sequence_selector) {
+		len += 3;
+	}
+	if (s2->multiple_input_stream) {
+		len += 1;
+	}
+
+	if (d->len < len)
+		return NULL;
+
+	return s2;
+}
+
+/**
+ * Accessor for the scrambling_sequence_index field of a dvb_s2_satellite_delivery_descriptor.
+ *
+ * @param s2 dvb_s2_satellite_delivery_descriptor pointer.
+ * @return The scrambling_sequence_index.
+ */
+static inline uint32_t dvb_s2_satellite_delivery_descriptor_scrambling_sequence_index(struct dvb_s2_satellite_delivery_descriptor *s2)
+{
+	uint8_t *tmp = (uint8_t*) s2;
+
+	if (s2->scrambling_sequence_selector) {
+		return ((tmp[4] & 0x03) << 16) | (tmp[5] << 8) | tmp[6];
+	}
+	return 0;
+}
+
+/**
+ * Accessor for the input_stream_id field of a dvb_s2_satellite_delivery_descriptor.
+ *
+ * @param s2 dvb_s2_satellite_delivery_descriptor pointer.
+ * @return The input_stream_id.
+ */
+static inline uint8_t dvb_s2_satellite_delivery_descriptor_input_stream_id(struct dvb_s2_satellite_delivery_descriptor *s2)
+{
+	uint8_t *tmp = (uint8_t*) s2;
+
+	if (!s2->multiple_input_stream)
+		return 0;
+
+	int off = 3;
+	if (s2->scrambling_sequence_selector) {
+		off += 3;
+	}
+	return tmp[off];
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif