/* 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 . Authors: Sergio Sagliocco Matthias P. Braendli / | |- ')|) |-|_ _ (|,_ .| _ ,_ \ Data Path \(|(||_(|/_| (||_||(a)_||||(|||.(_()|||/ */ #include "figs.hpp" #include #include #include #include static std::unordered_set clusters_seen; bool fig0_19_is_complete(int clusters_id) { bool complete = clusters_seen.count(clusters_id); if (complete) { clusters_seen.clear(); } else { clusters_seen.insert(clusters_id); } return complete; } // FIG 0/19 Announcement switching // ETSI EN 300 401 8.1.6.2 fig_result_t fig0_19(fig0_common_t& fig0, const display_settings_t &disp) { uint16_t Asw_flags; uint8_t i = 1, j, Cluster_Id, SubChId, Rfa, RegionId_LP; fig_result_t r; bool New_flag, Region_flag; uint8_t* f = fig0.f; while (i < (fig0.figlen - 3)) { // iterate over announcement switching // Cluster Id, Asw flags, New flag, Region flag, // SubChId, Rfa, Region Id Lower Part Cluster_Id = f[i]; r.complete |= fig0_19_is_complete(Cluster_Id); Asw_flags = ((uint16_t)f[i+1] << 8) | (uint16_t)f[i+2]; New_flag = (f[i+3] >> 7); Region_flag = (f[i+3] >> 6) & 0x1; SubChId = (f[i+3] & 0x3F); r.msgs.push_back(strprintf("Cluster Id=0x%02x", Cluster_Id)); r.msgs.push_back(strprintf("Asw flags=0x%04x", Asw_flags)); r.msgs.push_back(strprintf("New flag=%d %s", New_flag, (New_flag)?"new":"repeat")); r.msgs.push_back(strprintf("Region flag=%d last byte %s", Region_flag, (Region_flag)?"present":"absent")); r.msgs.push_back(strprintf("SubChId=%d", SubChId)); if (Region_flag) { if (i < (fig0.figlen - 4)) { // read region lower part Rfa = (f[i+4] >> 6); RegionId_LP = (f[i+4] & 0x3F); if (Rfa != 0) { r.errors.push_back(strprintf("Rfa=%d invalid value", Rfa)); } r.msgs.push_back(strprintf("Region Lower Part=0x%02x", RegionId_LP)); } else { r.errors.push_back("missing Region Lower Part, fig length too short !"); } } // decode announcement switching types for(j = 0; j < 16; j++) { if (Asw_flags & (1 << j)) { r.msgs.emplace_back(1, strprintf("Announcement switching=%s", get_announcement_type(j))); } } i += (4 + Region_flag); } return r; }