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author | Matthias P. Braendli <matthias.braendli@mpb.li> | 2017-07-28 11:17:24 +0200 |
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committer | Matthias P. Braendli <matthias.braendli@mpb.li> | 2017-07-28 11:17:24 +0200 |
commit | 9aee86aace7d6c504b410c972d0ab5065f7f7b94 (patch) | |
tree | 41390a781e3899f4f0827012891e2ad3d208366b /src/dabOutput/metadata.cpp | |
parent | c49acf830b68d25dbb18ed3e74683cba89187626 (diff) | |
download | dabmux-9aee86aace7d6c504b410c972d0ab5065f7f7b94.tar.gz dabmux-9aee86aace7d6c504b410c972d0ab5065f7f7b94.tar.bz2 dabmux-9aee86aace7d6c504b410c972d0ab5065f7f7b94.zip |
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.cpp | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/dabOutput/metadata.cpp b/src/dabOutput/metadata.cpp new file mode 100644 index 0000000..6dfd65c --- /dev/null +++ b/src/dabOutput/metadata.cpp @@ -0,0 +1,70 @@ +/* + 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); +} |