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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 /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;
-}
-