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authorMatthias P. Braendli <matthias.braendli@mpb.li>2017-07-28 11:17:24 +0200
committerMatthias P. Braendli <matthias.braendli@mpb.li>2017-07-28 11:17:24 +0200
commit9aee86aace7d6c504b410c972d0ab5065f7f7b94 (patch)
tree41390a781e3899f4f0827012891e2ad3d208366b /src/dabOutput/metadata.cpp
parentc49acf830b68d25dbb18ed3e74683cba89187626 (diff)
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Add edi time and utco as ZMQ metadata
Since ODR-DabMod doesn't check the zmq message length, it will accept additional metadata at the end of the ETI data
Diffstat (limited to 'src/dabOutput/metadata.cpp')
-rw-r--r--src/dabOutput/metadata.cpp70
1 files changed, 70 insertions, 0 deletions
diff --git a/src/dabOutput/metadata.cpp b/src/dabOutput/metadata.cpp
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+++ b/src/dabOutput/metadata.cpp
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+/*
+ Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Her Majesty the Queen in
+ Right of Canada (Communications Research Center Canada)
+
+ Copyright (C) 2017
+ Matthias P. Braendli, matthias.braendli@mpb.li
+
+ http://www.opendigitalradio.org
+
+ The metadata support for the outputs.
+*/
+/*
+ This file is part of ODR-DabMux.
+
+ ODR-DabMux is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as
+ published by the Free Software Foundation, either version 3 of the
+ License, or (at your option) any later version.
+
+ ODR-DabMux 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with ODR-DabMux. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "dabOutput/metadata.h"
+#include <cstring>
+#include <arpa/inet.h>
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+template <typename T>
+size_t write_meta(output_metadata_id_e md, uint8_t *buf, T value)
+{
+ buf[0] = static_cast<uint8_t>(md);
+
+ const int16_t len_value = sizeof(T);
+
+ const uint16_t data_length = htons(len_value);
+ memcpy(buf + 1, &data_length, sizeof(data_length));
+
+ if (len_value == 1) {
+ buf[3] = value;
+ }
+ else if (len_value == 2) {
+ const uint16_t value = htons(value);
+ memcpy(buf + 3, &value, sizeof(value));
+ }
+ else if (len_value == 4) {
+ const uint32_t value = htons(value);
+ memcpy(buf + 3, &value, sizeof(value));
+ }
+
+ return 3 + len_value;
+}
+
+size_t OutputMetadataUTCO::write(uint8_t *buf)
+{
+ return write_meta(getId(), buf, utco);
+}
+
+size_t OutputMetadataEDITime::write(uint8_t *buf)
+{
+ return write_meta(getId(), buf, seconds);
+}