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/*
Copyright (C) 2014 CSP Innovazione nelle ICT s.c.a r.l. (http://www.csp.it/)
Copyright (C) 2017 Matthias P. Braendli (http://www.opendigitalradio.org)
Copyright (C) 2015 Data Path
This program 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.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
Authors:
Sergio Sagliocco <sergio.sagliocco@csp.it>
Matthias P. Braendli <matthias@mpb.li>
/ | |- ')|) |-|_ _ (|,_ .| _ ,_ \
Data Path \(|(||_(|/_| (||_||(a)_||||(|||.(_()|||/
*/
#include "figs.hpp"
#include <cstdio>
#include <cstring>
#include <map>
#include <unordered_set>
static std::unordered_set<int> subch_ids_seen;
bool fig0_14_is_complete(int subch_id)
{
bool complete = subch_ids_seen.count(subch_id);
if (complete) {
subch_ids_seen.clear();
}
else {
subch_ids_seen.insert(subch_id);
}
return complete;
}
// fig 0/14 FEC Scheme: this 2-bit field shall indicate the Forward Error Correction scheme in use, as follows:
const char *FEC_schemes_str[4] = {
"no FEC scheme applied",
"FEC scheme applied according to ETSI EN 300 401 clause 5.3.5",
"reserved for future definition",
"reserved for future definition"
};
// FIG 0/14 FEC sub-channel organization
// ETSI EN 300 401 6.2.2
fig_result_t fig0_14(fig0_common_t& fig0, const display_settings_t &disp)
{
uint8_t i = 1, SubChId, FEC_scheme;
uint8_t* f = fig0.f;
fig_result_t r;
while (i < fig0.figlen) {
// iterate over Sub-channel
SubChId = f[i] >> 2;
r.complete |= fig0_14_is_complete(SubChId);
FEC_scheme = f[i] & 0x3;
r.msgs.push_back(strprintf("SubChId=0x%X", SubChId));
r.msgs.emplace_back(1, strprintf("FEC scheme=%d %s",
FEC_scheme, FEC_schemes_str[FEC_scheme]));
i++;
}
return r;
}
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