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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_27.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> services_seen;
+
+bool fig0_27_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 0/27 FM Announcement support
+// ETSI EN 300 401 8.1.11.2.1
+bool fig0_27(fig0_common_t& fig0, int indent)
+{
+ uint16_t SId, PI;
+ uint8_t i = 1, j, Rfu, Number_PI_codes, key;
+ char tmpbuf[256];
+ char desc[256];
+ uint8_t* f = fig0.f;
+ bool complete = false;
+
+ while (i < (fig0.figlen - 2)) {
+ // iterate over FM announcement support
+ SId = ((uint16_t)f[i] << 8) | (uint16_t)f[i+1];
+ complete |= fig0_27_is_complete(SId);
+ Rfu = f[i+2] >> 4;
+ Number_PI_codes = f[i+2] & 0x0F;
+ key = (fig0.oe() << 5) | (fig0.pd() << 4) | Number_PI_codes;
+ sprintf(desc, "SId=0x%X", SId);
+ if (Rfu != 0) {
+ sprintf(tmpbuf, ", Rfu=%d invalid value", Rfu);
+ strcat(desc, tmpbuf);
+ }
+ sprintf(tmpbuf, ", Number of PI codes=%d", Number_PI_codes);
+ strcat(desc, tmpbuf);
+ if (Number_PI_codes > 12) {
+ strcat(desc, " above maximum value of 12");
+ fprintf(stderr, "WARNING: FIG 0/%d Number of PI codes=%d > 12 (maximum value)\n", fig0.ext(), Number_PI_codes);
+ }
+ sprintf(tmpbuf, ", database key=0x%02X", key);
+ strcat(desc, tmpbuf);
+ // CEI Change Event Indication
+ if (Number_PI_codes == 0) {
+ // The Change Event Indication (CEI) is signalled by the Number of PI codes field = 0
+ strcat(desc, ", CEI");
+ }
+ printbuf(desc, indent+1, NULL, 0);
+ i += 3;
+ for(j = 0; (j < Number_PI_codes) && (i < (fig0.figlen - 1)); j++) {
+ // iterate over PI
+ PI = ((uint16_t)f[i] << 8) | (uint16_t)f[i+1];
+ sprintf(desc, "PI=0x%X", PI);
+ printbuf(desc, indent+2, NULL, 0);
+ i += 2;
+ }
+ if (j != Number_PI_codes) {
+ sprintf(desc, "fig length too short !");
+ printbuf(desc, indent+2, NULL, 0);
+ fprintf(stderr, "WARNING: FIG 0/%d length %d too short !\n", fig0.ext(), fig0.figlen);
+ }
+ }
+
+ return complete;
+}
+