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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_8.cpp
parent5542c8ecff635f9abc05b6b2ff255db02c2c9c46 (diff)
downloadetisnoop-4809f3c042a99a639542b1e6cd22657871113260.tar.gz
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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 <set>
+
+/* EN 300 401, 8.1.14.3 Service component label
+ * The combination of the SId and the SCIdS provides a service component
+ * identifier which is valid globally.
+ */
+using SId_t = int;
+using SCIdS_t = int;
+static std::set<std::pair<SId_t, SCIdS_t> > components_seen;
+
+bool fig0_8_is_complete(SId_t SId, SCIdS_t SCIdS)
+{
+ auto key = std::make_pair(SId, SCIdS);
+ bool complete = components_seen.count(key);
+
+ if (complete) {
+ components_seen.clear();
+ }
+ else {
+ components_seen.insert(key);
+ }
+
+ return complete;
+}
+
+
+
+// FIG 0/8 Service component global definition
+// ETSI EN 300 401 6.3.5
+bool fig0_8(fig0_common_t& fig0, int indent)
+{
+ uint32_t SId;
+ uint16_t SCId;
+ uint8_t i = 1, Rfa, SCIdS, SubChId, FIDCId;
+ char tmpbuf[256];
+ char desc[256];
+ bool Ext_flag, LS_flag, MSC_FIC_flag;
+ uint8_t* f = fig0.f;
+ bool complete = false;
+
+ while (i < (fig0.figlen - (2 + (2 * fig0.pd())))) {
+ // iterate over service component global definition
+ if (fig0.pd() == 0) {
+ // Programme services, 16 bit SId
+ SId = (f[i] << 8) | f[i+1];
+ i += 2;
+ }
+ else {
+ // Data services, 32 bit SId
+ SId = ((uint32_t)f[i] << 24) | ((uint32_t)f[i+1] << 16) |
+ ((uint32_t)f[i+2] << 8) | (uint32_t)f[i+3];
+ i += 4;
+ }
+ Ext_flag = f[i] >> 7;
+ Rfa = (f[i] >> 4) & 0x7;
+ SCIdS = f[i] & 0x0F;
+ complete |= fig0_8_is_complete(SId, SCIdS);
+ sprintf(desc, "SId=0x%X, Ext flag=%d 8-bit Rfa %s", SId, Ext_flag, (Ext_flag)?"present":"absent");
+ if (Rfa != 0) {
+ sprintf(tmpbuf, ", Rfa=%d invalid value", Rfa);
+ strcat(desc, tmpbuf);
+ }
+ sprintf(tmpbuf, ", SCIdS=0x%X", SCIdS);
+ strcat(desc, tmpbuf);
+ i++;
+ if (i < fig0.figlen) {
+ LS_flag = f[i] >> 7;
+ sprintf(tmpbuf, ", L/S flag=%d %s", LS_flag, (LS_flag)?"Long form":"Short form");
+ strcat(desc, tmpbuf);
+ if (LS_flag == 0) {
+ // Short form
+ if (i < (fig0.figlen - Ext_flag)) {
+ MSC_FIC_flag = (f[i] >> 6) & 0x01;
+ if (MSC_FIC_flag == 0) {
+ // MSC in stream mode and SubChId identifies the sub-channel
+ SubChId = f[i] & 0x3F;
+ sprintf(tmpbuf, ", MSC/FIC flag=%d MSC, SubChId=0x%X", MSC_FIC_flag, SubChId);
+ strcat(desc, tmpbuf);
+ }
+ else {
+ // FIC and FIDCId identifies the component
+ FIDCId = f[i] & 0x3F;
+ sprintf(tmpbuf, ", MSC/FIC flag=%d FIC, FIDCId=0x%X", MSC_FIC_flag, FIDCId);
+ strcat(desc, tmpbuf);
+ }
+ if (Ext_flag == 1) {
+ // Rfa field present
+ Rfa = f[i+1];
+ if (Rfa != 0) {
+ sprintf(tmpbuf, ", Rfa=0x%X invalid value", Rfa);
+ strcat(desc, tmpbuf);
+ }
+ }
+ }
+ i += (1 + Ext_flag);
+ }
+ else {
+ // Long form
+ if (i < (fig0.figlen - 1)) {
+ Rfa = (f[i] >> 4) & 0x07;
+ SCId = (((uint16_t)f[i] & 0x0F) << 8) | (uint16_t)f[i+1];
+ if (Rfa != 0) {
+ sprintf(tmpbuf, ", Rfa=%d invalid value", Rfa);
+ strcat(desc, tmpbuf);
+ }
+ sprintf(tmpbuf, ", SCId=0x%X", SCId);
+ strcat(desc, tmpbuf);
+ }
+ i += 2;
+ }
+ }
+ printbuf(desc, indent+1, NULL, 0);
+ }
+
+ return complete;
+}
+