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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> services_seen;
bool fig0_27_is_complete(int services_id)
{
bool complete = services_seen.count(services_id);
if (complete) {
services_seen.clear();
}
else {
services_seen.insert(services_id);
}
return complete;
}
// FIG 0/27 FM Announcement support
// ETSI EN 300 401 8.1.11.2.1
fig_result_t fig0_27(fig0_common_t& fig0, const display_settings_t &disp)
{
uint16_t SId, PI;
uint8_t i = 1, j, Rfu, Number_PI_codes, key;
fig_result_t r;
uint8_t* f = fig0.f;
while (i < (fig0.figlen - 2)) {
// iterate over FM announcement support
SId = ((uint16_t)f[i] << 8) | (uint16_t)f[i+1];
r.complete |= fig0_27_is_complete(SId);
Rfu = f[i+2] >> 4;
Number_PI_codes = f[i+2] & 0x0F;
key = (fig0.oe() << 5) | (fig0.pd() << 4) | Number_PI_codes;
r.msgs.push_back(strprintf("SId=0x%X", SId));
if (Rfu != 0) {
r.errors.push_back(strprintf("Rfu=%d invalid value", Rfu));
}
r.msgs.emplace_back(1, strprintf("Number of PI codes=%d", Number_PI_codes));
if (Number_PI_codes > 12) {
r.errors.push_back(strprintf("Number of PI codes=%d > 12 (maximum value)", Number_PI_codes));
}
r.msgs.emplace_back(1, strprintf("database key=0x%02X", key));
// CEI Change Event Indication
if (Number_PI_codes == 0) {
// The Change Event Indication (CEI) is signalled by the Number of PI codes field = 0
r.msgs.emplace_back(1, "CEI");
}
i += 3;
for (j = 0; j < Number_PI_codes && i < fig0.figlen - 1; j++) {
// iterate over PI
PI = ((uint16_t)f[i] << 8) | (uint16_t)f[i+1];
r.msgs.emplace_back(2, strprintf("PI=0x%X", PI));
i += 2;
}
if (j != Number_PI_codes) {
r.errors.push_back("fig length too short !");
}
}
return r;
}
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