aboutsummaryrefslogtreecommitdiffstats
path: root/lib/libucsi/mpeg/fmc_descriptor.h
diff options
context:
space:
mode:
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/fmc_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/fmc_descriptor.h')
-rw-r--r--lib/libucsi/mpeg/fmc_descriptor.h122
1 files changed, 122 insertions, 0 deletions
diff --git a/lib/libucsi/mpeg/fmc_descriptor.h b/lib/libucsi/mpeg/fmc_descriptor.h
new file mode 100644
index 0000000..5a5bed2
--- /dev/null
+++ b/lib/libucsi/mpeg/fmc_descriptor.h
@@ -0,0 +1,122 @@
+/*
+ * 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_FMC_DESCRIPTOR
+#define _UCSI_MPEG_FMC_DESCRIPTOR 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/descriptor.h>
+#include <libucsi/endianops.h>
+
+/**
+ * mpeg_fmc_descriptor structure.
+ */
+struct mpeg_fmc_descriptor {
+ struct descriptor d;
+
+ /* struct mpeg_flex_mux muxes[] */
+} __ucsi_packed;
+
+/**
+ * An entry in the muxes field of an mpeg_fmc_descriptor structure.
+ */
+struct mpeg_flex_mux {
+ uint16_t es_id;
+ uint8_t flex_mux_channel;
+} __ucsi_packed;
+
+/**
+ * Process an mpeg_fmc_descriptor structure.
+ *
+ * @param d Generic descriptor structure.
+ * @return Pointer to an mpeg_fmc_descriptor structure, or NULL on error.
+ */
+static inline struct mpeg_fmc_descriptor*
+ mpeg_fmc_descriptor_codec(struct descriptor* d)
+{
+ uint8_t* buf = (uint8_t*) d + 2;
+ int pos = 0;
+ int len = d->len;
+
+ if (len % sizeof(struct mpeg_flex_mux))
+ return NULL;
+
+ while(pos < len) {
+ bswap16(buf+pos);
+ pos += sizeof(struct mpeg_flex_mux);
+ }
+
+ return (struct mpeg_fmc_descriptor*) d;
+}
+
+/**
+ * Convenience iterator for the muxes field of an mpeg_fmc_descriptor structure.
+ *
+ * @param d Generic descriptor structure.
+ * @param pos Variable holding a pointer to the the current entry within the muxes field.
+ */
+#define mpeg_fmc_descriptor_muxes_for_each(d, pos) \
+ for ((pos) = mpeg_fmc_descriptor_muxes_first(d); \
+ (pos); \
+ (pos) = mpeg_fmc_descriptor_muxes_next(d, pos))
+
+
+
+
+
+
+
+
+
+
+/******************************** PRIVATE CODE ********************************/
+static inline struct mpeg_flex_mux*
+ mpeg_fmc_descriptor_muxes_first(struct mpeg_fmc_descriptor *d)
+{
+ if (d->d.len < sizeof(struct mpeg_flex_mux))
+ return NULL;
+
+ return (struct mpeg_flex_mux *)
+ ((uint8_t*) d + sizeof(struct mpeg_fmc_descriptor));
+}
+
+static inline struct mpeg_flex_mux*
+ mpeg_fmc_descriptor_muxes_next(struct mpeg_fmc_descriptor *d,
+ struct mpeg_flex_mux *pos)
+{
+ uint8_t *end = (uint8_t*) d + 2 + d->d.len;
+ uint8_t *next = (uint8_t *) pos + sizeof(struct mpeg_flex_mux);
+
+ if (next >= end)
+ return NULL;
+
+ return (struct mpeg_flex_mux *) next;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif