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https://github.com/g4klx/MMDVMHost
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Renamed DMR protocol files.
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119
DMRCSBK.cpp
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119
DMRCSBK.cpp
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/*
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* Copyright (C) 2015,2016 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 "DMRCSBK.h"
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#include "BPTC19696.h"
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#include "Utils.h"
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#include "CRC.h"
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#include <cstdio>
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#include <cassert>
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CDMRCSBK::CDMRCSBK(const unsigned char* bytes) :
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m_CSBKO(CSBKO_NONE),
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m_FID(0x00U),
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m_bsId(0U),
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m_srcId(0U),
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m_dstId(0U),
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m_valid(false)
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{
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assert(bytes != NULL);
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CBPTC19696 bptc;
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unsigned char data[12U];
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bptc.decode(bytes, data);
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data[10U] ^= CSBK_CRC_MASK[0U];
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data[11U] ^= CSBK_CRC_MASK[1U];
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m_valid = CCRC::checkCCITT16(data, 12U);
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m_CSBKO = CSBKO(data[0U] & 0x3FU);
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m_FID = data[1U];
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switch (m_CSBKO) {
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case CSBKO_BSDWNACT:
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m_bsId = data[4U] << 16 | data[5U] << 8 | data[6U];
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m_srcId = data[7U] << 16 | data[8U] << 8 | data[9U];
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CUtils::dump("Download Activate CSBK", data, 12U);
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break;
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case CSBKO_UUVREQ:
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m_dstId = data[4U] << 16 | data[5U] << 8 | data[6U];
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m_srcId = data[7U] << 16 | data[8U] << 8 | data[9U];
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CUtils::dump("Unit to Unit Service Request CSBK", data, 12U);
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break;
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case CSBKO_UUANSRSP:
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m_dstId = data[4U] << 16 | data[5U] << 8 | data[6U];
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m_srcId = data[7U] << 16 | data[8U] << 8 | data[9U];
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CUtils::dump("Unit to Unit Service Answer Response CSBK", data, 12U);
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break;
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case CSBKO_PRECCSBK:
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m_dstId = data[4U] << 16 | data[5U] << 8 | data[6U];
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m_srcId = data[7U] << 16 | data[8U] << 8 | data[9U];
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CUtils::dump("Preamble CSBK", data, 12U);
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break;
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case CSBKO_NACKRSP:
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m_srcId = data[4U] << 16 | data[5U] << 8 | data[6U];
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m_dstId = data[7U] << 16 | data[8U] << 8 | data[9U];
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CUtils::dump("Negative Acknowledge Response CSBK", data, 12U);
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break;
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default:
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CUtils::dump("Unhandled CSBK type", data, 12U);
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break;
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}
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}
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CDMRCSBK::~CDMRCSBK()
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{
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}
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bool CDMRCSBK::isValid() const
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{
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return m_valid;
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}
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CSBKO CDMRCSBK::getCSBKO() const
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{
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return m_CSBKO;
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}
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unsigned char CDMRCSBK::getFID() const
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{
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return m_FID;
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}
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unsigned int CDMRCSBK::getBSId() const
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{
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return m_bsId;
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}
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unsigned int CDMRCSBK::getSrcId() const
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{
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return m_srcId;
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}
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unsigned int CDMRCSBK::getDstId() const
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{
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return m_dstId;
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}
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