mirror of
https://github.com/g4klx/DMRGateway.git
synced 2025-12-06 05:32:01 +01:00
119 lines
2.9 KiB
C++
119 lines
2.9 KiB
C++
/*
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* Copyright (C) 2017 by Jonathan Naylor G4KLX
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "RewritePC.h"
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#include "DMRDefines.h"
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#include "DMRFullLC.h"
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#include <cstdio>
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#include <cassert>
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CRewritePC::CRewritePC(const char* name, unsigned int fromSlot, unsigned int fromId, unsigned int toSlot, unsigned int toId, unsigned int range) :
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m_name(name),
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m_fromSlot(fromSlot),
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m_fromIdStart(fromId),
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m_fromIdEnd(fromId + range),
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m_toSlot(toSlot),
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m_toIdStart(toId),
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m_lc(FLCO_USER_USER, 0U, 0U),
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m_embeddedLC()
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{
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assert(fromSlot == 1U || fromSlot == 2U);
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assert(toSlot == 1U || toSlot == 2U);
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}
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CRewritePC::~CRewritePC()
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{
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}
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bool CRewritePC::process(CDMRData& data)
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{
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FLCO flco = data.getFLCO();
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unsigned int dstId = data.getDstId();
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unsigned int slotNo = data.getSlotNo();
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if (flco != FLCO_USER_USER || slotNo != m_fromSlot || dstId < m_fromIdStart || dstId >= m_fromIdEnd)
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return false;
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if (m_fromSlot != m_toSlot)
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data.setSlotNo(m_toSlot);
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if (m_fromIdStart != m_toIdStart) {
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unsigned int newDstId = dstId + m_toIdStart - m_fromIdStart;
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data.setDstId(newDstId);
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unsigned char dataType = data.getDataType();
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switch (dataType) {
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case DT_VOICE_LC_HEADER:
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case DT_TERMINATOR_WITH_LC:
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processHeader(data, newDstId, dataType);
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break;
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case DT_VOICE:
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processVoice(data, newDstId);
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break;
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case DT_VOICE_SYNC:
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// Nothing to do
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break;
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default:
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// Not sure what to do
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break;
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}
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}
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return true;
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}
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void CRewritePC::processHeader(CDMRData& data, unsigned int dstId, unsigned char dataType)
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{
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unsigned int srcId = data.getSrcId();
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if (srcId != m_lc.getSrcId() || dstId != m_lc.getDstId()) {
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m_lc.setSrcId(srcId);
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m_lc.setDstId(dstId);
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m_embeddedLC.setLC(m_lc);
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}
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unsigned char buffer[DMR_FRAME_LENGTH_BYTES];
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data.getData(buffer);
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CDMRFullLC fullLC;
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fullLC.encode(m_lc, buffer, dataType);
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data.setData(buffer);
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}
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void CRewritePC::processVoice(CDMRData& data, unsigned int dstId)
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{
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unsigned int srcId = data.getSrcId();
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if (srcId != m_lc.getSrcId() || dstId != m_lc.getDstId()) {
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m_lc.setSrcId(srcId);
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m_lc.setDstId(dstId);
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m_embeddedLC.setLC(m_lc);
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}
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unsigned char buffer[DMR_FRAME_LENGTH_BYTES];
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data.getData(buffer);
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unsigned char n = data.getN();
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m_embeddedLC.getData(buffer, n);
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data.setData(buffer);
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}
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