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authorMark Purcell <msp@debian.org>2008-06-22 11:00:40 +1000
committeretobi <git@e-tobi.net>2013-09-03 09:48:42 +0200
commit891c51ff368ed700dec6025eeb47ce4d96f76418 (patch)
tree3729664829e4faa691d403274f38eb10890b533c /lib/libucsi/dvb/application_signalling_descriptor.h
parent1c6e1f28f54ec2606c23936c1d8689f2be55a86c (diff)
parentab959d7b4194715870128e616b8e29d4a101e488 (diff)
downloadlinux-dvb-apps-891c51ff368ed700dec6025eeb47ce4d96f76418.tar.gz
Imported Debian patch 1.1.1+rev1207-1debian/1.1.1+rev1207-1
Diffstat (limited to 'lib/libucsi/dvb/application_signalling_descriptor.h')
-rw-r--r--lib/libucsi/dvb/application_signalling_descriptor.h124
1 files changed, 124 insertions, 0 deletions
diff --git a/lib/libucsi/dvb/application_signalling_descriptor.h b/lib/libucsi/dvb/application_signalling_descriptor.h
new file mode 100644
index 0000000..78211cf
--- /dev/null
+++ b/lib/libucsi/dvb/application_signalling_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_DVB_APPLICATION_SIGNALLING_DESCRIPTOR
+#define _UCSI_DVB_APPLICATION_SIGNALLING_DESCRIPTOR 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/descriptor.h>
+#include <libucsi/endianops.h>
+
+/**
+ * dvb_application_signalling_descriptor structure.
+ */
+struct dvb_application_signalling_descriptor {
+ struct descriptor d;
+
+ /* struct dvb_application_signalling_entry entries[] */
+} __ucsi_packed;
+
+/**
+ * An entry in the entries field of a dvb_application_signalling_descriptor.
+ */
+struct dvb_application_signalling_entry {
+ uint16_t application_type;
+ EBIT2(uint8_t reserved : 3; ,
+ uint8_t AIT_version_number : 5; );
+} __ucsi_packed;
+
+/**
+ * Process a dvb_application_signalling_descriptor.
+ *
+ * @param d Generic descriptor pointer.
+ * @return dvb_application_signalling_descriptor pointer, or NULL on error.
+ */
+static inline struct dvb_application_signalling_descriptor*
+ dvb_application_signalling_descriptor_codec(struct descriptor* d)
+{
+ uint32_t pos = 0;
+ uint32_t len = d->len;
+ uint8_t* buf = (uint8_t*) d + 2;
+
+ pos += sizeof(struct dvb_application_signalling_descriptor) - 2;
+ if (len % sizeof(struct dvb_application_signalling_entry))
+ return NULL;
+
+ while(pos < len) {
+ bswap16(buf+pos);
+ pos+=3;
+ }
+
+ return (struct dvb_application_signalling_descriptor*) d;
+}
+
+/**
+ * Iterator for the entries field of a dvb_application_signalling_descriptor.
+ *
+ * @param d dvb_application_signalling_descriptor pointer.
+ * @param pos Variable containing a pointer to the current dvb_application_signalling_entry.
+ */
+#define dvb_application_signalling_descriptor_entries_for_each(d, pos) \
+ for ((pos) = dvb_application_signalling_descriptor_entries_first(d); \
+ (pos); \
+ (pos) = dvb_application_signalling_descriptor_entries_next(d, pos))
+
+
+
+
+
+
+
+
+
+
+/******************************** PRIVATE CODE ********************************/
+static inline struct dvb_application_signalling_entry*
+ dvb_application_signalling_descriptor_entries_first(struct dvb_application_signalling_descriptor *d)
+{
+ if (d->d.len == 0)
+ return NULL;
+
+ return (struct dvb_application_signalling_entry *)
+ ((uint8_t*) d + sizeof(struct dvb_application_signalling_descriptor));
+}
+
+static inline struct dvb_application_signalling_entry*
+ dvb_application_signalling_descriptor_entries_next(struct dvb_application_signalling_descriptor *d,
+ struct dvb_application_signalling_entry *pos)
+{
+ uint8_t *end = (uint8_t*) d + 2 + d->d.len;
+ uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_application_signalling_entry);
+
+ if (next >= end)
+ return NULL;
+
+ return (struct dvb_application_signalling_entry *) next;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif