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-rw-r--r--src/fig/FIG0_13.cpp182
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diff --git a/src/fig/FIG0_13.cpp b/src/fig/FIG0_13.cpp
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+/*
+ Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+ 2011, 2012 Her Majesty the Queen in Right of Canada (Communications
+ Research Center Canada)
+
+ Copyright (C) 2016
+ Matthias P. Braendli, matthias.braendli@mpb.li
+ */
+/*
+ This file is part of ODR-DabMux.
+
+ ODR-DabMux 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.
+
+ ODR-DabMux 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 ODR-DabMux. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "fig/FIG0_13.h"
+#include "utils.h"
+
+namespace FIC {
+
+FIG0_13::FIG0_13(FIGRuntimeInformation *rti) :
+ m_rti(rti),
+ m_initialised(false),
+ m_transmit_programme(false)
+{
+}
+
+FillStatus FIG0_13::fill(uint8_t *buf, size_t max_size)
+{
+ FillStatus fs;
+ auto ensemble = m_rti->ensemble;
+ ssize_t remaining = max_size;
+
+ if (not m_initialised) {
+ componentFIG0_13 = m_rti->ensemble->components.end();
+ m_initialised = true;
+ }
+
+ FIGtype0* fig0 = NULL;
+
+ for (; componentFIG0_13 != ensemble->components.end();
+ ++componentFIG0_13) {
+
+ auto subchannel = getSubchannel(ensemble->subchannels,
+ (*componentFIG0_13)->subchId);
+
+ if (subchannel == ensemble->subchannels.end()) {
+ etiLog.log(error,
+ "Subchannel %i does not exist for component "
+ "of service %i\n",
+ (*componentFIG0_13)->subchId,
+ (*componentFIG0_13)->serviceId);
+ throw MuxInitException();
+ }
+
+ if ( m_transmit_programme &&
+ (*subchannel)->type == subchannel_type_t::Audio &&
+ (*componentFIG0_13)->audio.uaType != 0xffff) {
+
+ const int required_size = 3+4+11;
+
+ if (fig0 == NULL) {
+ if (remaining < 2 + required_size) {
+ break;
+ }
+ fig0 = (FIGtype0*)buf;
+ fig0->FIGtypeNumber = 0;
+ fig0->Length = 1;
+ fig0->CN = 0;
+ fig0->OE = 0;
+ fig0->PD = 0;
+ fig0->Extension = 13;
+ buf += 2;
+ remaining -= 2;
+ }
+ else if (remaining < required_size) {
+ break;
+ }
+
+ FIG0_13_shortAppInfo* info = (FIG0_13_shortAppInfo*)buf;
+ info->SId = htonl((*componentFIG0_13)->serviceId) >> 16;
+ info->SCIdS = (*componentFIG0_13)->SCIdS;
+ info->No = 1;
+ buf += 3;
+ remaining -= 3;
+ fig0->Length += 3;
+
+ FIG0_13_app* app = (FIG0_13_app*)buf;
+ app->setType((*componentFIG0_13)->audio.uaType);
+ app->length = 2;
+ app->xpad = htons(0x0c3c);
+ /* xpad meaning
+ CA = 0
+ CAOrg = 0
+ Rfu = 0
+ AppTy(5) = 12 (MOT, start of X-PAD data group)
+ DG = 0 (MSC data groups used)
+ Rfu = 0
+ DSCTy(6) = 60 (MOT)
+ */
+
+ buf += 2 + app->length;
+ remaining -= 2 + app->length;
+ fig0->Length += 2 + app->length;
+ }
+ else if (!m_transmit_programme &&
+ (*subchannel)->type == subchannel_type_t::Packet &&
+ (*componentFIG0_13)->packet.appType != 0xffff) {
+
+ const int required_size = 5+2+2;
+
+ if (fig0 == NULL) {
+ if (remaining < 2 + required_size) {
+ break;
+ }
+ fig0 = (FIGtype0*)buf;
+ fig0->FIGtypeNumber = 0;
+ fig0->Length = 1;
+ fig0->CN = 0;
+ fig0->OE = 0;
+ fig0->PD = 1;
+ fig0->Extension = 13;
+ buf += 2;
+ remaining -= 2;
+ }
+ else if (remaining < required_size) {
+ break;
+ }
+
+ FIG0_13_longAppInfo* info = (FIG0_13_longAppInfo*)buf;
+ info->SId = htonl((*componentFIG0_13)->serviceId);
+ info->SCIdS = (*componentFIG0_13)->SCIdS;
+ info->No = 1;
+ buf += 5;
+ remaining -= 5;
+ fig0->Length += 5;
+
+ FIG0_13_app* app = (FIG0_13_app*)buf;
+ app->setType((*componentFIG0_13)->packet.appType);
+ if (app->typeLow == FIG0_13_APPTYPE_EPG) {
+ app->length = 2;
+ app->xpad = htons(0x0100);
+ /* xpad used to hold two bytes of EPG profile information
+ 01 = basic profile
+ 00 = list terminator */
+ }
+ else {
+ app->length = 0;
+ }
+ buf += 2 + app->length;
+ remaining -= 2 + app->length;
+ fig0->Length += 2 + app->length;
+ }
+ }
+
+ if (componentFIG0_13 == ensemble->components.end()) {
+ componentFIG0_13 = ensemble->components.begin();
+
+ // The full database is sent every second full loop
+ fs.complete_fig_transmitted = m_transmit_programme;
+
+ m_transmit_programme = not m_transmit_programme;
+ // Alternate between data and and programme FIG0/13,
+ // do not mix fig0 with PD=0 with extension 13 stuff
+ // that actually needs PD=1, and vice versa
+ }
+
+ fs.num_bytes_written = max_size - remaining;
+ return fs;
+}
+
+}