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authorMatthias P. Braendli <matthias.braendli@mpb.li>2016-09-02 17:43:32 +0200
committerMatthias P. Braendli <matthias.braendli@mpb.li>2016-09-07 21:20:24 +0200
commit4809f3c042a99a639542b1e6cd22657871113260 (patch)
treedc0ec0f256eaceb79d63daa09591d4a6ef08cb73 /fig0_6.cpp
parent5542c8ecff635f9abc05b6b2ff255db02c2c9c46 (diff)
downloadetisnoop-4809f3c042a99a639542b1e6cd22657871113260.tar.gz
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Move all sources to src/
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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> links_seen;
-
-bool fig0_6_is_complete(int link_key)
-{
- bool complete = links_seen.count(link_key);
-
- if (complete) {
- links_seen.clear();
- }
- else {
- links_seen.insert(link_key);
- }
-
- return complete;
-}
-
-// map between fig 0/6 database key and LA to detect activation and deactivation of links
-static std::map<uint16_t, bool> fig0_6_key_la;
-
-void fig0_6_cleardb()
-{
- fig0_6_key_la.clear();
-}
-
-// FIG 0/6 Service linking information
-// ETSI EN 300 401 8.1.15
-bool fig0_6(fig0_common_t& fig0, int indent)
-{
- uint32_t j;
- uint16_t LSN, key;
- uint8_t i = 1, Number_of_Ids, IdLQ;
- char signal_link[256];
- char desc[256];
- bool Id_list_flag, LA, SH, ILS, Shd;
- bool complete = false;
-
- uint8_t* f = fig0.f;
-
- while (i < (fig0.figlen - 1)) {
- // iterate over service linking
- Id_list_flag = (f[i] >> 7) & 0x01;
- LA = (f[i] >> 6) & 0x01;
- SH = (f[i] >> 5) & 0x01;
- ILS = (f[i] >> 4) & 0x01;
- LSN = ((f[i] & 0x0F) << 8) | f[i+1];
- key = (fig0.oe() << 15) | (fig0.pd() << 14) | (SH << 13) | (ILS << 12) | LSN;
- complete |= fig0_6_is_complete(key);
- strcpy(signal_link, "");
- // check activation / deactivation
- if ((fig0_6_key_la.count(key) > 0) && (fig0_6_key_la[key] != LA)) {
- if (LA == 0) {
- strcat(signal_link, " deactivated");
- }
- else {
- strcat(signal_link, " activated");
- }
- }
- fig0_6_key_la[key] = LA;
- i += 2;
- if (Id_list_flag == 0) {
- if (fig0.cn() == 0) { // Id_list_flag=0 && fig0.cn()=0: CEI Change Event Indication
- strcat(signal_link, " CEI");
- }
- sprintf(desc, "Id list flag=%d, LA=%d %s, S/H=%d %s, ILS=%d %s, LSN=%d, database key=0x%04x%s",
- Id_list_flag, LA, (LA)?"active":"inactive", SH, (SH)?"Hard":"Soft", ILS, (ILS)?"international":"national", LSN, key, signal_link);
- printbuf(desc, indent+1, NULL, 0);
- }
- else { // Id_list_flag == 1
- if (i < fig0.figlen) {
- Number_of_Ids = (f[i] & 0x0F);
- if (fig0.pd() == 0) {
- IdLQ = (f[i] >> 5) & 0x03;
- Shd = (f[i] >> 4) & 0x01;
- sprintf(desc, "Id list flag=%d, LA=%d %s, S/H=%d %s, ILS=%d %s, LSN=%d, database key=0x%04x, IdLQ=%d, Shd=%d %s, Number of Ids=%d%s",
- Id_list_flag, LA, (LA)?"active":"inactive", SH, (SH)?"Hard":"Soft", ILS, (ILS)?"international":"national", LSN, key, IdLQ, Shd, (Shd)?"b11-8 in 4-F are different services":"single service", Number_of_Ids, signal_link);
- printbuf(desc, indent+1, NULL, 0);
- if (ILS == 0) {
- // read Id list
- for(j = 0; ((j < Number_of_Ids) && ((i+2+(j*2)) < fig0.figlen)); j++) {
- // ETSI EN 300 401 8.1.15:
- // The IdLQ shall not apply to the first entry in the Id list when fig0.oe() = "0" and
- // when the version number of the type 0 field is set to "0" (using the C/N flag, see clause 5.2.2.1)
- // ... , the first entry in the Id list of each Service linking field shall be
- // the SId that applies to the service in the ensemble.
- if (((j == 0) && (fig0.oe() == 0) && (fig0.cn() == 0)) ||
- (IdLQ == 0)) {
- sprintf(desc, "DAB SId 0x%X", ((f[i+1+(j*2)] << 8) | f[i+2+(j*2)]));
- }
- else if (IdLQ == 1) {
- sprintf(desc, "RDS PI 0x%X", ((f[i+1+(j*2)] << 8) | f[i+2+(j*2)]));
- }
- else if (IdLQ == 2) {
- sprintf(desc, "AM-FM service 0x%X", ((f[i+1+(j*2)] << 8) | f[i+2+(j*2)]));
- }
- else { // IdLQ == 3
- sprintf(desc, "invalid ILS IdLQ configuration");
- }
- printbuf(desc, indent+2, NULL, 0);
- }
- // check deadlink
- if ((Number_of_Ids == 0) && (IdLQ == 1)) {
- sprintf(desc, "deadlink");
- printbuf(desc, indent+2, NULL, 0);
- }
- i += (Number_of_Ids * 2) + 1;
- }
- else { // fig0.pd() == 0 && ILS == 1
- // read Id list
- for(j = 0; ((j < Number_of_Ids) && ((i+3+(j*3)) < fig0.figlen)); j++) {
- // ETSI EN 300 401 8.1.15:
- // The IdLQ shall not apply to the first entry in the Id list when fig0.oe() = "0" and
- // when the version number of the type 0 field is set to "0" (using the C/N flag, see clause 5.2.2.1)
- // ... , the first entry in the Id list of each Service linking field shall be
- // the SId that applies to the service in the ensemble.
- if (((j == 0) && (fig0.oe() == 0) && (fig0.cn() == 0)) ||
- (IdLQ == 0)) {
- sprintf(desc, "DAB SId ecc 0x%02X Id 0x%04X", f[i+1+(j*3)], ((f[i+2+(j*3)] << 8) | f[i+3+(j*3)]));
- }
- else if (IdLQ == 1) {
- sprintf(desc, "RDS PI ecc 0x%02X Id 0x%04X", f[i+1+(j*3)], ((f[i+2+(j*3)] << 8) | f[i+3+(j*3)]));
- }
- else if (IdLQ == 2) {
- sprintf(desc, "AM-FM service ecc 0x%02X Id 0x%04X", f[i+1+(j*3)], ((f[i+2+(j*3)] << 8) | f[i+3+(j*3)]));
- }
- else { // IdLQ == 3
- sprintf(desc, "DRM/AMSS service ecc 0x%02X Id 0x%04X", f[i+1+(j*3)], ((f[i+2+(j*3)] << 8) | f[i+3+(j*3)]));
- }
- printbuf(desc, indent+2, NULL, 0);
- }
- // check deadlink
- if ((Number_of_Ids == 0) && (IdLQ == 1)) {
- sprintf(desc, "deadlink");
- printbuf(desc, indent+2, NULL, 0);
- }
- i += (Number_of_Ids * 3) + 1;
- }
- }
- else { // fig0.pd() == 1
- sprintf(desc, "Id list flag=%d, LA=%d %s, S/H=%d %s, ILS=%d %s, LSN=%d, database key=0x%04x, Number of Ids=%d%s",
- Id_list_flag, LA, (LA)?"active":"inactive", SH, (SH)?"Hard":"Soft", ILS, (ILS)?"international":"national", LSN, key, Number_of_Ids, signal_link);
- printbuf(desc, indent+1, NULL, 0);
- if (Number_of_Ids > 0) {
- // read Id list
- for(j = 0; ((j < Number_of_Ids) && ((i+4+(j*4)) < fig0.figlen)); j++) {
- sprintf(desc, "SId 0x%X",
- ((f[i+1+(j*4)] << 24) | (f[i+2+(j*4)] << 16) | (f[i+3+(j*4)] << 8) | f[i+4+(j*4)]));
- printbuf(desc, indent+2, NULL, 0);
- }
- }
- i += (Number_of_Ids * 4) + 1;
- }
- }
- }
- }
-
- return complete;
-}
-