DMRGateway/RewriteType.cpp
2017-06-04 15:17:43 +01:00

135 lines
3.1 KiB
C++

/*
* Copyright (C) 2017 by Jonathan Naylor G4KLX
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "RewriteType.h"
#include "DMRDefines.h"
#include "DMRFullLC.h"
#include "Log.h"
#include <cstdio>
#include <cassert>
CRewriteType::CRewriteType(const char* name, unsigned int fromSlot, unsigned int fromTG, unsigned int toSlot, unsigned int toId, bool trace) :
m_name(name),
m_fromSlot(fromSlot),
m_fromTG(fromTG),
m_toSlot(toSlot),
m_toId(toId),
m_trace(trace),
m_lc(FLCO_USER_USER, 0U, toId),
m_embeddedLC()
{
assert(fromSlot == 1U || fromSlot == 2U);
assert(toSlot == 1U || toSlot == 2U);
}
CRewriteType::~CRewriteType()
{
}
bool CRewriteType::processRF(CDMRData& data)
{
bool ret = process(data);
if (m_trace)
LogDebug("Rule Trace,\tRewriteType %s Slot=%u Dst=TG%u: %s", m_name, m_fromSlot, m_fromTG, ret ? "matched" : "not matched");
return ret;
}
bool CRewriteType::processNet(CDMRData& data)
{
bool ret = process(data);
if (m_trace)
LogDebug("Rule Trace,\tRewriteType %s Slot=%u Dst=TG%u: %s", m_name, m_fromSlot, m_fromTG, ret ? "matched" : "not matched");
return ret;
}
bool CRewriteType::process(CDMRData& data)
{
FLCO flco = data.getFLCO();
unsigned int dstId = data.getDstId();
unsigned int slotNo = data.getSlotNo();
if (flco != FLCO_GROUP || slotNo != m_fromSlot || dstId != m_fromTG)
return false;
if (m_fromSlot != m_toSlot)
data.setSlotNo(m_toSlot);
data.setDstId(m_toId);
data.setFLCO(FLCO_USER_USER);
unsigned char dataType = data.getDataType();
switch (dataType) {
case DT_VOICE_LC_HEADER:
case DT_TERMINATOR_WITH_LC:
processHeader(data, dataType);
break;
case DT_VOICE:
processVoice(data);
break;
case DT_VOICE_SYNC:
// Nothing to do
break;
default:
// Not sure what to do
break;
}
return true;
}
void CRewriteType::processHeader(CDMRData& data, unsigned char dataType)
{
unsigned int srcId = data.getSrcId();
if (srcId != m_lc.getSrcId()) {
m_lc.setSrcId(srcId);
m_embeddedLC.setLC(m_lc);
}
unsigned char buffer[DMR_FRAME_LENGTH_BYTES];
data.getData(buffer);
CDMRFullLC fullLC;
fullLC.encode(m_lc, buffer, dataType);
data.setData(buffer);
}
void CRewriteType::processVoice(CDMRData& data)
{
unsigned int srcId = data.getSrcId();
if (srcId != m_lc.getSrcId()) {
m_lc.setSrcId(srcId);
m_embeddedLC.setLC(m_lc);
}
unsigned char buffer[DMR_FRAME_LENGTH_BYTES];
data.getData(buffer);
unsigned char n = data.getN();
m_embeddedLC.getData(buffer, n);
data.setData(buffer);
}