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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) 2015
Matthias P. Braendli, matthias.braendli@mpb.li
Implementation of FIG1
*/
/*
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/FIG1.h"
#include "DabMultiplexer.h"
namespace FIC {
//=========== FIG 1/0 ===========
FillStatus FIG1_0::fill(uint8_t *buf, size_t max_size)
{
FillStatus fs;
auto ensemble = m_rti->ensemble;
size_t remaining = max_size;
if (remaining < 22) {
fs.num_bytes_written = 0;
return fs;
}
auto fig1_0 = (FIGtype1_0*)buf;
fig1_0->Length = 21;
fig1_0->FIGtypeNumber = 1;
fig1_0->Extension = 0;
fig1_0->OE = 0;
fig1_0->Charset = 0;
fig1_0->EId = htons(ensemble->id);
buf += 4;
ensemble->label.writeLabel(buf);
buf += 16;
buf[0] = ensemble->label.flag() >> 8;
buf[1] = ensemble->label.flag() & 0xFF;
buf += 2;
remaining -= 22;
fs.complete_fig_transmitted = true;
fs.num_bytes_written = max_size - remaining;
return fs;
}
FillStatus FIG1_1::fill(uint8_t *buf, size_t max_size)
{
FillStatus fs;
ssize_t remaining = max_size;
if (not m_initialised) {
service = m_rti->ensemble->services.end();
}
auto ensemble = m_rti->ensemble;
// Rotate through the subchannels until there is no more
// space
if (service == ensemble->services.end()) {
service = ensemble->services.begin();
fs.complete_fig_transmitted = true;
}
for (; service != ensemble->services.end();
++service) {
if (remaining < 4) {
break;
}
if ((*service)->getType(ensemble) == subchannel_type_t::Audio) {
auto fig1_1 = (FIGtype1_1 *)buf;
fig1_1->FIGtypeNumber = 1;
fig1_1->Length = 21;
fig1_1->Charset = 0;
fig1_1->OE = 0;
fig1_1->Extension = 1;
fig1_1->Sld = htons((*service)->id);
buf += 4;
remaining -= 4;
}
}
fs.num_bytes_written = max_size - remaining;
return fs;
}
} // namespace FIC
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