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/*
Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011 Her Majesty
the Queen in Right of Canada (Communications Research Center Canada)
Copyright (C) 2017
Matthias P. Braendli, matthias.braendli@mpb.li
http://opendigitalradio.org
*/
/*
This file is part of ODR-DabMod.
ODR-DabMod 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-DabMod 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-DabMod. If not, see <http://www.gnu.org/licenses/>.
*/
#include "FrameMultiplexer.h"
#include <string>
#include <cstdio>
#include <cassert>
#include <cstring>
FrameMultiplexer::FrameMultiplexer(
const EtiSource& etiSource) :
ModMux(),
m_etiSource(etiSource)
{
}
// dataIn[0] -> PRBS
// dataIn[1+] -> subchannels
int FrameMultiplexer::process(std::vector<Buffer*> dataIn, Buffer* dataOut)
{
assert(dataIn.size() >= 1);
assert(dataIn[0]->getLength() == 864 * 8);
dataOut->setLength(dataIn[0]->getLength());
#ifdef TRACE
fprintf(stderr, "FrameMultiplexer::process(dataIn:");
for (size_t i = 0; i < dataIn.size(); ++i) {
fprintf(stderr, " %p", dataIn[i]);
}
fprintf(stderr, ", sizeIn:");
for (size_t i = 0; i < dataIn.size(); ++i) {
fprintf(stderr, " %zu", dataIn[i]->getLength());
}
fprintf(stderr, ", dataOut: %p, sizeOut: %zu)\n", dataOut, dataOut->getLength());
#endif
uint8_t* out = reinterpret_cast<uint8_t*>(dataOut->getData());
std::vector<Buffer*>::const_iterator in = dataIn.begin();
// Write PRBS
memcpy(out, (*in)->getData(), (*in)->getLength());
++in;
// Write subchannel
const auto subchannels = m_etiSource.getSubchannels();
if (subchannels.size() != dataIn.size() - 1) {
throw FrameMultiplexerError(
"FrameMultiplexer detected subchannel size change from " +
std::to_string(dataIn.size() - 1) + " to " +
std::to_string(subchannels.size()));
}
auto subchannel = subchannels.begin();
while (in != dataIn.end()) {
if ((*subchannel)->framesizeCu() * 8 != (*in)->getLength()) {
throw FrameMultiplexerError(
"FrameMultiplexer detected invalid subchannel size! " +
std::to_string((*subchannel)->framesizeCu() * 8) + " != " +
std::to_string((*in)->getLength()));
}
size_t offset = (*subchannel)->startAddress() * 8;
memcpy(&out[offset], (*in)->getData(), (*in)->getLength());
++in;
++subchannel;
}
return dataOut->getLength();
}
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