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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 <string>
#include <cstring>
#include <unordered_set>
static std::unordered_set<int> services_seen;
bool fig0_2_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 0/2 Basic service and service component definition
// ETSI EN 300 401 6.3.1
bool fig0_2(fig0_common_t& fig0, int indent)
{
uint16_t sref, sid;
uint8_t cid, ecc, local, caid, ncomp, timd, ps, ca, subchid, scty;
int k = 1;
std::string psdesc;
uint8_t* f = fig0.f;
char sctydesc[32];
char desc[256];
bool complete = false;
while (k < fig0.figlen) {
if (fig0.pd() == 0) {
sid = f[k] * 256 + f[k+1];
ecc = 0;
cid = (f[k] & 0xF0) >> 4;
sref = (f[k] & 0x0F) * 256 + f[k+1];
k += 2;
}
else {
sid = f[k] * 256 * 256 * 256 + \
f[k+1] * 256 * 256 + \
f[k+2] * 256 + \
f[k+3];
ecc = f[k];
cid = (f[k+1] & 0xF0) >> 4;
sref = (f[k+1] & 0x0F) * 256 * 256 + \
f[k+2] * 256 + \
f[k+3];
k += 4;
}
complete |= fig0_2_is_complete(sid);
local = (f[k] & 0x80) >> 7;
caid = (f[k] & 0x70) >> 4;
ncomp = f[k] & 0x0F;
if (fig0.pd() == 0)
sprintf(desc,
"Service ID=0x%X (Country id=%d, Service reference=%d), Number of components=%d, Local flag=%d, CAID=%d",
sid, cid, sref, ncomp, local, caid);
else
sprintf(desc,
"Service ID=0x%X (ECC=%d, Country id=%d, Service reference=%d), Number of components=%d, Local flag=%d, CAID=%d",
sid, ecc, cid, sref, ncomp, local, caid);
printbuf(desc, indent+1, NULL, 0);
k++;
for (int i=0; i<ncomp; i++) {
uint8_t scomp[2];
memcpy(scomp, f+k, 2);
sprintf(desc, "Component[%d]", i);
printbuf(desc, indent+2, scomp, 2, "");
timd = (scomp[0] & 0xC0) >> 6;
ps = (scomp[1] & 0x02) >> 1;
ca = scomp[1] & 0x01;
scty = scomp[0] & 0x3F;
subchid = (scomp[1] & 0xFC) >> 2;
/* useless, kept as reference
if (timd == 3) {
uint16_t scid;
scid = scty*64 + subchid;
}
*/
if (ps == 0) {
psdesc = "Secondary service";
}
else {
psdesc = "Primary service";
}
if (timd == 0) {
//MSC stream audio
if (scty == 0)
sprintf(sctydesc, "MPEG Foreground sound (%d)", scty);
else if (scty == 1)
sprintf(sctydesc, "MPEG Background sound (%d)", scty);
else if (scty == 2)
sprintf(sctydesc, "Multi Channel sound (%d)", scty);
else if (scty == 63)
sprintf(sctydesc, "AAC sound (%d)", scty);
else
sprintf(sctydesc, "Unknown ASCTy (%d)", scty);
sprintf(desc, "Stream audio mode, %s, %s, SubChannel ID=%02X, CA=%d", psdesc.c_str(), sctydesc, subchid, ca);
printbuf(desc, indent+3, NULL, 0);
}
else if (timd == 1) {
// MSC stream data
sprintf(sctydesc, "DSCTy=%d %s", scty, get_dscty_type(scty));
sprintf(desc, "Stream data mode, %s, %s, SubChannel ID=%02X, CA=%d", psdesc.c_str(), sctydesc, subchid, ca);
printbuf(desc, indent+3, NULL, 0);
}
else if (timd == 2) {
// FIDC
sprintf(sctydesc, "DSCTy=%d %s", scty, get_dscty_type(scty));
sprintf(desc, "FIDC mode, %s, %s, Fast Information Data Channel ID=%02X, CA=%d", psdesc.c_str(), sctydesc, subchid, ca);
printbuf(desc, indent+3, NULL, 0);
}
else if (timd == 3) {
// MSC Packet mode
sprintf(desc, "MSC Packet Mode, %s, Service Component ID=%02X, CA=%d", psdesc.c_str(), subchid, ca);
printbuf(desc, indent+3, NULL, 0);
}
k += 2;
}
}
return complete;
}
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