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/*
Copyright (C) 2014 CSP Innovazione nelle ICT s.c.a r.l. (http://www.csp.it/)
Copyright (C) 2016 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> components_seen;
bool fig0_5_is_complete(int components_id)
{
bool complete = components_seen.count(components_id);
if (complete) {
components_seen.clear();
}
else {
components_seen.insert(components_id);
}
return complete;
}
// FIG 0/5 Service component language
// ETSI EN 300 401 8.1.2
bool fig0_5(fig0_common_t& fig0, int indent)
{
uint16_t SCId;
uint8_t i = 1, SubChId, FIDCId, Language, Rfa;
char tmpbuf[256];
char desc[256];
bool LS_flag, MSC_FIC_flag;
bool complete = false;
uint8_t* f = fig0.f;
while (i < (fig0.figlen - 1)) {
// iterate over service component language
LS_flag = f[i] >> 7;
if (LS_flag == 0) {
// Short form (L/S = 0)
MSC_FIC_flag = (f[i] >> 6) & 0x01;
Language = f[i+1];
if (MSC_FIC_flag == 0) {
// 0: MSC in Stream mode and SubChId identifies the sub-channel
SubChId = f[i] & 0x3F;
sprintf(desc, "L/S flag=%d short form, MSC/FIC flag=%d MSC, SubChId=0x%X, Language=0x%X %s",
LS_flag, MSC_FIC_flag, SubChId, Language,
get_language_name(Language));
}
else {
// 1: FIC and FIDCId identifies the component
FIDCId = f[i] & 0x3F;
sprintf(desc, "L/S flag=%d short form, MSC/FIC flag=%d FIC, FIDCId=0x%X, Language=0x%X %s",
LS_flag, MSC_FIC_flag, FIDCId, Language,
get_language_name(Language));
}
int key = (MSC_FIC_flag << 7) | (f[i] % 0x3F);
complete |= fig0_5_is_complete(key);
printbuf(desc, indent+1, NULL, 0);
i += 2;
}
else {
// Long form (L/S = 1)
if (i < (fig0.figlen - 2)) {
Rfa = (f[i] >> 4) & 0x07;
SCId = (((uint16_t)f[i] & 0x0F) << 8) | (uint16_t)f[i+1];
int key = (LS_flag << 15) | SCId;
complete |= fig0_5_is_complete(key);
Language = f[i+2];
sprintf(desc, "L/S flag=%d long form", LS_flag);
if (Rfa != 0) {
sprintf(tmpbuf, ", Rfa=%d invalid value", Rfa);
strcat(desc, tmpbuf);
}
sprintf(tmpbuf, ", SCId=0x%X, Language=0x%X %s",
SCId, Language,
get_language_name(Language));
strcat(desc, tmpbuf);
printbuf(desc, indent+1, NULL, 0);
}
i += 3;
}
}
return complete;
}
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