/* 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 . Authors: Sergio Sagliocco Matthias P. Braendli / | |- ')|) |-|_ _ (|,_ .| _ ,_ \ Data Path \(|(||_(|/_| (||_||(a)_||||(|||.(_()|||/ */ #include "figs.hpp" #include #include #include #include static std::unordered_set 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 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; }