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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 /src/fig0_19.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> 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
+bool fig0_19(fig0_common_t& fig0, int indent)
+{
+ uint16_t Asw_flags;
+ uint8_t i = 1, j, Cluster_Id, SubChId, Rfa, RegionId_LP;
+ char tmpbuf[256];
+ char desc[256];
+ bool New_flag, Region_flag;
+ uint8_t* f = fig0.f;
+ const int figtype = 0;
+ bool complete = false;
+
+ 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];
+ 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);
+ sprintf(desc, "Cluster Id=0x%02x, Asw flags=0x%04x, New flag=%d %s, Region flag=%d last byte %s, SubChId=%d",
+ Cluster_Id, Asw_flags, New_flag, (New_flag)?"new":"repeat", Region_flag, (Region_flag)?"present":"absent", 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) {
+ sprintf(tmpbuf, ", Rfa=%d invalid value", Rfa);
+ strcat(desc, tmpbuf);
+ }
+ sprintf(tmpbuf, ", Region Lower Part=0x%02x", RegionId_LP);
+ strcat(desc, tmpbuf);
+ }
+ else {
+ sprintf(tmpbuf, "missing Region Lower Part, fig length too short !");
+ strcat(desc, tmpbuf);
+ fprintf(stderr, "WARNING: FIG %d/%d length %d too short !\n", figtype, fig0.ext(), fig0.figlen);
+ }
+ }
+ printbuf(desc, indent+1, NULL, 0);
+ // decode announcement switching types
+ for(j = 0; j < 16; j++) {
+ if (Asw_flags & (1 << j)) {
+ sprintf(desc, "Announcement switching=%s", get_announcement_type(j));
+ printbuf(desc, indent+2, NULL, 0);
+ }
+ }
+ i += (4 + Region_flag);
+ }
+
+ return complete;
+}
+