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DMRSlot.cpp
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DMRSlot.cpp
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/*
* Copyright (C) 2015-2019 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; version 2 of the License.
*
* 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.
*/
#include "DMRAccessControl.h"
#include "DMRDataHeader.h"
#include "DMRSlotType.h"
#include "DMRShortLC.h"
#include "DMRTrellis.h"
#include "DMRFullLC.h"
#include "BPTC19696.h"
#include "DMRSlot.h"
#include "DMRCSBK.h"
#include "DMREMB.h"
#include "Utils.h"
#include "Sync.h"
#include "CRC.h"
#include "Log.h"
#include <cassert>
#include <ctime>
#include <algorithm>
#include <cstdint>
#include <cmath>
unsigned int CDMRSlot::m_colorCode = 0U;
bool CDMRSlot::m_embeddedLCOnly = false;
bool CDMRSlot::m_dumpTAData = true;
CModem* CDMRSlot::m_modem = NULL;
CDMRNetwork* CDMRSlot::m_network = NULL;
CDisplay* CDMRSlot::m_display = NULL;
bool CDMRSlot::m_duplex = true;
CDMRLookup* CDMRSlot::m_lookup = NULL;
unsigned int CDMRSlot::m_hangCount = 3U * 17U;
bool CDMRSlot::m_ovcm = false;
bool CDMRSlot::m_ovcmRX = false;
CRSSIInterpolator* CDMRSlot::m_rssiMapper = NULL;
unsigned int CDMRSlot::m_jitterTime = 360U;
unsigned int CDMRSlot::m_jitterSlots = 6U;
unsigned char* CDMRSlot::m_idle = NULL;
FLCO CDMRSlot::m_flco1;
unsigned char CDMRSlot::m_id1 = 0U;
ACTIVITY_TYPE CDMRSlot::m_activity1 = ACTIVITY_NONE;
FLCO CDMRSlot::m_flco2;
unsigned char CDMRSlot::m_id2 = 0U;
ACTIVITY_TYPE CDMRSlot::m_activity2 = ACTIVITY_NONE;
const unsigned char TALKER_ID_NONE = 0x00U;
const unsigned char TALKER_ID_HEADER = 0x01U;
const unsigned char TALKER_ID_BLOCK1 = 0x02U;
const unsigned char TALKER_ID_BLOCK2 = 0x04U;
const unsigned char TALKER_ID_BLOCK3 = 0x08U;
const unsigned int NO_HEADERS_SIMPLEX = 8U;
const unsigned int NO_HEADERS_DUPLEX = 3U;
const unsigned int NO_PREAMBLE_CSBK = 15U;
// #define DUMP_DMR
CDMRSlot::CDMRSlot(unsigned int slotNo, unsigned int timeout) :
m_slotNo(slotNo),
m_queue(5000U, "DMR Slot"),
m_rfState(RS_RF_LISTENING),
m_netState(RS_NET_IDLE),
m_rfEmbeddedLC(),
m_rfEmbeddedData(NULL),
m_rfEmbeddedReadN(0U),
m_rfEmbeddedWriteN(1U),
m_rfTalkerId(TALKER_ID_NONE),
m_rfTalkerAlias(),
m_netEmbeddedLC(),
m_netEmbeddedData(NULL),
m_netEmbeddedReadN(0U),
m_netEmbeddedWriteN(1U),
m_netTalkerId(TALKER_ID_NONE),
m_rfLC(NULL),
m_netLC(NULL),
m_rfSeqNo(0U),
m_rfN(0U),
m_lastrfN(0U),
m_netN(0U),
m_networkWatchdog(1000U, 0U, 1500U),
m_rfTimeoutTimer(1000U, timeout),
m_netTimeoutTimer(1000U, timeout),
m_packetTimer(1000U, 0U, 50U),
m_interval(),
m_elapsed(),
m_rfFrames(0U),
m_netFrames(0U),
m_netLost(0U),
m_fec(),
m_rfBits(1U),
m_netBits(1U),
m_rfErrs(0U),
m_netErrs(0U),
m_rfTimeout(false),
m_netTimeout(false),
m_lastFrame(NULL),
m_lastFrameValid(false),
m_rssi(0U),
m_maxRSSI(0U),
m_minRSSI(0U),
m_aveRSSI(0U),
m_rssiCount(0U),
m_enabled(true),
m_fp(NULL)
{
m_lastFrame = new unsigned char[DMR_FRAME_LENGTH_BYTES + 2U];
m_rfEmbeddedData = new CDMREmbeddedData[2U];
m_netEmbeddedData = new CDMREmbeddedData[2U];
m_interval.start();
}
CDMRSlot::~CDMRSlot()
{
delete[] m_rfEmbeddedData;
delete[] m_netEmbeddedData;
delete[] m_lastFrame;
}
bool CDMRSlot::writeModem(unsigned char *data, unsigned int len)
{
assert(data != NULL);
if (!m_enabled)
return false;
if (data[0U] == TAG_LOST && m_rfState == RS_RF_AUDIO) {
std::string src = m_lookup->find(m_rfLC->getSrcId());
std::string dst = m_lookup->find(m_rfLC->getDstId());
FLCO flco = m_rfLC->getFLCO();
if (m_rssi != 0U)
LogMessage("DMR Slot %u, RF voice transmission lost from %s to %s%s, %.1f seconds, BER: %.1f%%, RSSI: -%u/-%u/-%u dBm", m_slotNo, src.c_str(), flco == FLCO_GROUP ? "TG " : "", dst.c_str(), float(m_rfFrames) / 16.667F, float(m_rfErrs * 100U) / float(m_rfBits), m_minRSSI, m_maxRSSI, m_aveRSSI / m_rssiCount);
else
LogMessage("DMR Slot %u, RF voice transmission lost from %s to %s%s, %.1f seconds, BER: %.1f%%", m_slotNo, src.c_str(), flco == FLCO_GROUP ? "TG " : "", dst.c_str(), float(m_rfFrames) / 16.667F, float(m_rfErrs * 100U) / float(m_rfBits));
if (m_rfTimeout) {
writeEndRF();
return false;
} else {
writeEndRF(true);
return true;
}
}
if (data[0U] == TAG_LOST && m_rfState == RS_RF_DATA) {
std::string src = m_lookup->find(m_rfLC->getSrcId());
std::string dst = m_lookup->find(m_rfLC->getDstId());
FLCO flco = m_rfLC->getFLCO();
LogMessage("DMR Slot %u, RF data transmission lost from %s to %s%s", m_slotNo, src.c_str(), flco == FLCO_GROUP ? "TG " : "", dst.c_str());
writeEndRF();
return false;
}
if (data[0U] == TAG_LOST) {
m_rfState = RS_RF_LISTENING;
return false;
}
// Have we got RSSI bytes on the end?
if (len == (DMR_FRAME_LENGTH_BYTES + 4U)) {
uint16_t raw = 0U;
raw |= (data[35U] << 8) & 0xFF00U;
raw |= (data[36U] << 0) & 0x00FFU;
// Convert the raw RSSI to dBm
int rssi = m_rssiMapper->interpolate(raw);
if (rssi != 0)
LogDebug("DMR Slot %u, raw RSSI: %u, reported RSSI: %d dBm", m_slotNo, raw, rssi);
// RSSI is always reported as positive
m_rssi = (rssi >= 0) ? rssi : -rssi;
if (m_rssi > m_minRSSI)
m_minRSSI = m_rssi;
if (m_rssi < m_maxRSSI)
m_maxRSSI = m_rssi;
m_aveRSSI += m_rssi;
m_rssiCount++;
}
bool dataSync = (data[1U] & DMR_SYNC_DATA) == DMR_SYNC_DATA;
bool audioSync = (data[1U] & DMR_SYNC_AUDIO) == DMR_SYNC_AUDIO;
if (dataSync) {
// Get the type from the packet metadata
unsigned char dataType = data[1U] & 0x0FU;
CDMRSlotType slotType;
slotType.setColorCode(m_colorCode);
slotType.setDataType(dataType);
if (dataType == DT_VOICE_LC_HEADER) {
if (m_rfState == RS_RF_AUDIO)
return true;
CDMRFullLC fullLC;
CDMRLC* lc = fullLC.decode(data + 2U, DT_VOICE_LC_HEADER);
if (lc == NULL)
return false;
unsigned int srcId = lc->getSrcId();
unsigned int dstId = lc->getDstId();
FLCO flco = lc->getFLCO();
if (!CDMRAccessControl::validateSrcId(srcId)) {
LogMessage("DMR Slot %u, RF user %u rejected", m_slotNo, srcId);
delete lc;
return false;
}
if (!CDMRAccessControl::validateTGId(m_slotNo, flco == FLCO_GROUP, dstId)) {
LogMessage("DMR Slot %u, RF user %u rejected for using TG %u", m_slotNo, srcId, dstId);
delete lc;
return false;
}
lc->setOVCM(m_ovcm);
m_rfLC = lc;
// The standby LC data
m_rfEmbeddedLC.setLC(*m_rfLC);
m_rfEmbeddedData[0U].setLC(*m_rfLC);
m_rfEmbeddedData[1U].setLC(*m_rfLC);
// Regenerate the LC data
fullLC.encode(*m_rfLC, data + 2U, DT_VOICE_LC_HEADER);
// Regenerate the Slot Type
slotType.getData(data + 2U);
// Convert the Data Sync to be from the BS or MS as needed
CSync::addDMRDataSync(data + 2U, m_duplex);
data[0U] = TAG_DATA;
data[1U] = 0x00U;
m_rfTimeoutTimer.start();
m_rfTimeout = false;
m_rfFrames = 0U;
m_rfSeqNo = 0U;
m_rfBits = 1U;
m_rfErrs = 0U;
m_rfEmbeddedReadN = 0U;
m_rfEmbeddedWriteN = 1U;
m_rfTalkerId = TALKER_ID_NONE;
m_minRSSI = m_rssi;
m_maxRSSI = m_rssi;
m_aveRSSI = m_rssi;
m_rssiCount = 1U;
if (m_duplex) {
m_queue.clear();
m_modem->writeDMRAbort(m_slotNo);
for (unsigned int i = 0U; i < NO_HEADERS_DUPLEX; i++)
writeQueueRF(data);
}
writeNetworkRF(data, DT_VOICE_LC_HEADER);
m_rfState = RS_RF_AUDIO;
std::string src = m_lookup->find(srcId);
std::string dst = m_lookup->find(dstId);
if (m_netState == RS_NET_IDLE) {
setShortLC(m_slotNo, dstId, flco, ACTIVITY_VOICE);
m_display->writeDMR(m_slotNo, src, flco == FLCO_GROUP, dst, "R");
m_display->writeDMRRSSI(m_slotNo, m_rssi);
}
LogMessage("DMR Slot %u, received RF voice header from %s to %s%s", m_slotNo, src.c_str(), flco == FLCO_GROUP ? "TG " : "", dst.c_str());
return true;
} else if (dataType == DT_VOICE_PI_HEADER) {
if (m_rfState != RS_RF_AUDIO)
return false;
// Regenerate the Slot Type
slotType.getData(data + 2U);
// Convert the Data Sync to be from the BS or MS as needed
CSync::addDMRDataSync(data + 2U, m_duplex);
// Regenerate the payload
CBPTC19696 bptc;
unsigned char payload[12U];
bptc.decode(data + 2U, payload);
bptc.encode(payload, data + 2U);
data[0U] = TAG_DATA;
data[1U] = 0x00U;
if (m_duplex)
writeQueueRF(data);
writeNetworkRF(data, DT_VOICE_PI_HEADER);
return true;
} else if (dataType == DT_TERMINATOR_WITH_LC) {
if (m_rfState != RS_RF_AUDIO)
return false;
// Regenerate the LC data
CDMRFullLC fullLC;
fullLC.encode(*m_rfLC, data + 2U, DT_TERMINATOR_WITH_LC);
// Regenerate the Slot Type
slotType.getData(data + 2U);
// Convert the Data Sync to be from the BS or MS as needed
CSync::addDMRDataSync(data + 2U, m_duplex);
if (!m_rfTimeout) {
data[0U] = TAG_EOT;
data[1U] = 0x00U;
writeNetworkRF(data, DT_TERMINATOR_WITH_LC);
writeNetworkRF(data, DT_TERMINATOR_WITH_LC);
if (m_duplex) {
for (unsigned int i = 0U; i < m_hangCount; i++)
writeQueueRF(data);
}
}
std::string src = m_lookup->find(m_rfLC->getSrcId());
std::string dst = m_lookup->find(m_rfLC->getDstId());
FLCO flco = m_rfLC->getFLCO();
if (m_rssi != 0U)
LogMessage("DMR Slot %u, received RF end of voice transmission from %s to %s%s, %.1f seconds, BER: %.1f%%, RSSI: -%u/-%u/-%u dBm", m_slotNo, src.c_str(), flco == FLCO_GROUP ? "TG " : "", dst.c_str(), float(m_rfFrames) / 16.667F, float(m_rfErrs * 100U) / float(m_rfBits), m_minRSSI, m_maxRSSI, m_aveRSSI / m_rssiCount);
else
LogMessage("DMR Slot %u, received RF end of voice transmission from %s to %s%s, %.1f seconds, BER: %.1f%%", m_slotNo, src.c_str(), flco == FLCO_GROUP ? "TG " : "", dst.c_str(), float(m_rfFrames) / 16.667F, float(m_rfErrs * 100U) / float(m_rfBits));
m_display->writeDMRTA(m_slotNo, NULL, " ");
if (m_rfTimeout) {
writeEndRF();
return false;
} else {
writeEndRF();
return true;
}
} else if (dataType == DT_DATA_HEADER) {
if (m_rfState == RS_RF_DATA)
return true;
CDMRDataHeader dataHeader;
bool valid = dataHeader.put(data + 2U);
if (!valid)
return false;
bool gi = dataHeader.getGI();
unsigned int srcId = dataHeader.getSrcId();
unsigned int dstId = dataHeader.getDstId();
if (!CDMRAccessControl::validateSrcId(srcId)) {
LogMessage("DMR Slot %u, RF user %u rejected", m_slotNo, srcId);
return false;
}
if (!CDMRAccessControl::validateTGId(m_slotNo, gi, dstId)) {
LogMessage("DMR Slot %u, RF user %u rejected for using TG %u", m_slotNo, srcId, dstId);
return false;
}
m_rfFrames = dataHeader.getBlocks();
m_rfLC = new CDMRLC(gi ? FLCO_GROUP : FLCO_USER_USER, srcId, dstId);
// Regenerate the data header
dataHeader.get(data + 2U);
// Regenerate the Slot Type
slotType.getData(data + 2U);
// Convert the Data Sync to be from the BS or MS as needed
CSync::addDMRDataSync(data + 2U, m_duplex);
data[0U] = m_rfFrames == 0U ? TAG_EOT : TAG_DATA;
data[1U] = 0x00U;
if (m_duplex)
writeQueueRF(data);
writeNetworkRF(data, DT_DATA_HEADER);
m_rfState = RS_RF_DATA;
std::string src = m_lookup->find(srcId);
std::string dst = m_lookup->find(dstId);
if (m_netState == RS_NET_IDLE) {
setShortLC(m_slotNo, dstId, gi ? FLCO_GROUP : FLCO_USER_USER, ACTIVITY_DATA);
m_display->writeDMR(m_slotNo, src, gi, dst, "R");
m_display->writeDMRRSSI(m_slotNo, m_rssi);
}
LogMessage("DMR Slot %u, received RF data header from %s to %s%s, %u blocks", m_slotNo, src.c_str(), gi ? "TG ": "", dst.c_str(), m_rfFrames);
if (m_rfFrames == 0U) {
LogMessage("DMR Slot %u, ended RF data transmission from %s to %s%s", m_slotNo, src.c_str(), gi ? "TG " : "", dst.c_str());
writeEndRF();
}
return true;
} else if (dataType == DT_CSBK) {
CDMRCSBK csbk;
bool valid = csbk.put(data + 2U);
if (!valid)
return false;
CSBKO csbko = csbk.getCSBKO();
if (csbko == CSBKO_BSDWNACT)
return false;
// set the OVCM bit for the supported csbk
csbk.setOVCM(m_ovcm);
bool gi = csbk.getGI();
unsigned int srcId = csbk.getSrcId();
unsigned int dstId = csbk.getDstId();
if (srcId != 0U || dstId != 0U) {
if (!CDMRAccessControl::validateSrcId(srcId)) {
LogMessage("DMR Slot %u, RF user %u rejected", m_slotNo, srcId);
return false;
}
if (!CDMRAccessControl::validateTGId(m_slotNo, gi, dstId)) {
LogMessage("DMR Slot %u, RF user %u rejected for using TG %u", m_slotNo, srcId, dstId);
return false;
}
}
// Regenerate the CSBK data
csbk.get(data + 2U);
// Regenerate the Slot Type
slotType.getData(data + 2U);
// Convert the Data Sync to be from the BS or MS as needed
CSync::addDMRDataSync(data + 2U, m_duplex);
data[0U] = TAG_DATA;
data[1U] = 0x00U;
if (m_duplex)
writeQueueRF(data);
writeNetworkRF(data, DT_CSBK, gi ? FLCO_GROUP : FLCO_USER_USER, srcId, dstId);
std::string src = m_lookup->find(srcId);
std::string dst = m_lookup->find(dstId);
switch (csbko) {
case CSBKO_UUVREQ:
LogMessage("DMR Slot %u, received RF Unit to Unit Voice Service Request CSBK from %s to %s%s", m_slotNo, src.c_str(), gi ? "TG ": "", dst.c_str());
break;
case CSBKO_UUANSRSP:
LogMessage("DMR Slot %u, received RF Unit to Unit Voice Service Answer Response CSBK from %s to %s%s", m_slotNo, src.c_str(), gi ? "TG ": "", dst.c_str());
break;
case CSBKO_NACKRSP:
LogMessage("DMR Slot %u, received RF Negative Acknowledgment Response CSBK from %s to %s%s", m_slotNo, src.c_str(), gi ? "TG ": "", dst.c_str());
break;
case CSBKO_PRECCSBK:
LogMessage("DMR Slot %u, received RF %s Preamble CSBK (%u to follow) from %s to %s%s", m_slotNo, csbk.getDataContent() ? "Data" : "CSBK", csbk.getCBF(), src.c_str(), gi ? "TG ": "", dst.c_str());
break;
default:
LogWarning("DMR Slot %u, unhandled RF CSBK type - 0x%02X", m_slotNo, csbko);
break;
}
// If data preamble, signal its existence
if (m_netState == RS_NET_IDLE && csbko == CSBKO_PRECCSBK && csbk.getDataContent()) {
setShortLC(m_slotNo, dstId, gi ? FLCO_GROUP : FLCO_USER_USER, ACTIVITY_DATA);
m_display->writeDMR(m_slotNo, src, gi, dst, "R");
m_display->writeDMRRSSI(m_slotNo, m_rssi);
}
return true;
} else if (dataType == DT_RATE_12_DATA || dataType == DT_RATE_34_DATA || dataType == DT_RATE_1_DATA) {
if (m_rfState != RS_RF_DATA || m_rfFrames == 0U)
return false;
// Regenerate the rate 1/2 payload
if (dataType == DT_RATE_12_DATA) {
CBPTC19696 bptc;
unsigned char payload[12U];
bptc.decode(data + 2U, payload);
bptc.encode(payload, data + 2U);
} else if (dataType == DT_RATE_34_DATA) {
CDMRTrellis trellis;
unsigned char payload[18U];
bool ret = trellis.decode(data + 2U, payload);
if (ret) {
trellis.encode(payload, data + 2U);
} else {
LogMessage("DMR Slot %u, unfixable RF rate 3/4 data", m_slotNo);
CUtils::dump(1U, "Data", data + 2U, DMR_FRAME_LENGTH_BYTES);
}
}
// Regenerate the Slot Type
slotType.getData(data + 2U);
// Convert the Data Sync to be from the BS or MS as needed
CSync::addDMRDataSync(data + 2U, m_duplex);
m_rfFrames--;
data[0U] = m_rfFrames == 0U ? TAG_EOT : TAG_DATA;
data[1U] = 0x00U;
if (m_duplex)
writeQueueRF(data);
writeNetworkRF(data, dataType);
if (m_rfFrames == 0U) {
LogMessage("DMR Slot %u, ended RF data transmission", m_slotNo);
writeEndRF();
}
return true;
}
} else if (audioSync) {
if (m_rfState == RS_RF_AUDIO) {
m_lastrfN = 0;
// Convert the Audio Sync to be from the BS or MS as needed
CSync::addDMRAudioSync(data + 2U, m_duplex);
unsigned int errors = 0U;
unsigned char fid = m_rfLC->getFID();
if (fid == FID_ETSI || fid == FID_DMRA) {
errors = m_fec.regenerateDMR(data + 2U);
LogDebug("DMR Slot %u, audio sequence no. 0, errs: %u/141 (%.1f%%)", m_slotNo, errors, float(errors) / 1.41F);
m_display->writeDMRBER(m_slotNo, float(errors) / 1.41F);
m_rfErrs += errors;
}
m_rfBits += 141U;
m_rfFrames++;
m_rfEmbeddedReadN = (m_rfEmbeddedReadN + 1U) % 2U;
m_rfEmbeddedWriteN = (m_rfEmbeddedWriteN + 1U) % 2U;
m_rfEmbeddedData[m_rfEmbeddedWriteN].reset();
m_display->writeDMRRSSI(m_slotNo, m_rssi);
if (!m_rfTimeout) {
data[0U] = TAG_DATA;
data[1U] = 0x00U;
if (m_duplex)
writeQueueRF(data);
writeNetworkRF(data, DT_VOICE_SYNC, errors);
return true;
}
return false;
} else if (m_rfState == RS_RF_LISTENING) {
m_rfEmbeddedLC.reset();
m_rfState = RS_RF_LATE_ENTRY;
return false;
}
} else {
if (m_rfState == RS_RF_AUDIO) {
m_rfN = data[1U] & 0x0FU;
if (m_rfN > 5U)
return false;
if (m_rfN == m_lastrfN)
return false;
if (m_rfN != (m_lastrfN + 1U))
return false;
m_lastrfN = m_rfN;
unsigned int errors = 0U;
unsigned char fid = m_rfLC->getFID();
if (fid == FID_ETSI || fid == FID_DMRA) {
errors = m_fec.regenerateDMR(data + 2U);
LogDebug("DMR Slot %u, audio sequence no. %u, errs: %u/141 (%.1f%%)", m_slotNo, m_rfN, errors, float(errors) / 1.41F);
m_display->writeDMRBER(m_slotNo, float(errors) / 1.41F);
m_rfErrs += errors;
}
m_rfBits += 141U;
m_rfFrames++;
// Get the LCSS from the EMB
CDMREMB emb;
emb.putData(data + 2U);
unsigned char lcss = emb.getLCSS();
// Dump any interesting Embedded Data
bool ret = m_rfEmbeddedData[m_rfEmbeddedWriteN].addData(data + 2U, lcss);
if (ret) {
FLCO flco = m_rfEmbeddedData[m_rfEmbeddedWriteN].getFLCO();
unsigned char data[9U];
m_rfEmbeddedData[m_rfEmbeddedWriteN].getRawData(data);
char text[80U];
switch (flco) {
case FLCO_GROUP:
case FLCO_USER_USER:
// ::sprintf(text, "DMR Slot %u, Embedded LC", m_slotNo);
// CUtils::dump(1U, text, data, 9U);
break;
case FLCO_GPS_INFO:
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, Embedded GPS Info", m_slotNo);
CUtils::dump(2U, text, data, 9U);
logGPSPosition(data);
}
if (m_network != NULL)
m_network->writeRadioPosition(m_rfLC->getSrcId(), data);
break;
case FLCO_TALKER_ALIAS_HEADER:
if (m_network != NULL)
m_network->writeTalkerAlias(m_rfLC->getSrcId(), 0U, data);
if (!(m_rfTalkerId & TALKER_ID_HEADER)) {
if (m_rfTalkerId == TALKER_ID_NONE)
m_rfTalkerAlias.reset();
m_rfTalkerAlias.add(0, data, 7U);
m_display->writeDMRTA(m_slotNo, (unsigned char*)m_rfTalkerAlias.get(), "R");
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, Embedded Talker Alias Header", m_slotNo);
CUtils::dump(2U, text, data, 9U);
}
m_rfTalkerId |= TALKER_ID_HEADER;
}
break;
case FLCO_TALKER_ALIAS_BLOCK1:
if (m_network != NULL)
m_network->writeTalkerAlias(m_rfLC->getSrcId(), 1U, data);
if (!(m_rfTalkerId & TALKER_ID_BLOCK1)) {
if (m_rfTalkerId == TALKER_ID_NONE)
m_rfTalkerAlias.reset();
m_rfTalkerAlias.add(1, data, 7U);
m_display->writeDMRTA(m_slotNo, (unsigned char*)m_rfTalkerAlias.get(), "R");
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, Embedded Talker Alias Block 1", m_slotNo);
CUtils::dump(2U, text, data, 9U);
}
m_rfTalkerId |= TALKER_ID_BLOCK1;
}
break;
case FLCO_TALKER_ALIAS_BLOCK2:
if (m_network != NULL)
m_network->writeTalkerAlias(m_rfLC->getSrcId(), 2U, data);
if (!(m_rfTalkerId & TALKER_ID_BLOCK2)) {
if (m_rfTalkerId == TALKER_ID_NONE)
m_rfTalkerAlias.reset();
m_rfTalkerAlias.add(2, data, 7U);
m_display->writeDMRTA(m_slotNo, (unsigned char*)m_rfTalkerAlias.get(), "R");
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, Embedded Talker Alias Block 2", m_slotNo);
CUtils::dump(2U, text, data, 9U);
}
m_rfTalkerId |= TALKER_ID_BLOCK2;
}
break;
case FLCO_TALKER_ALIAS_BLOCK3:
if (m_network != NULL)
m_network->writeTalkerAlias(m_rfLC->getSrcId(), 3U, data);
if (!(m_rfTalkerId & TALKER_ID_BLOCK3)) {
if (m_rfTalkerId == TALKER_ID_NONE)
m_rfTalkerAlias.reset();
m_rfTalkerAlias.add(3, data, 7U);
m_display->writeDMRTA(m_slotNo, (unsigned char*)m_rfTalkerAlias.get(), "R");
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, Embedded Talker Alias Block 3", m_slotNo);
CUtils::dump(2U, text, data, 9U);
}
m_rfTalkerId |= TALKER_ID_BLOCK3;
}
break;
default:
::sprintf(text, "DMR Slot %u, Unknown Embedded Data", m_slotNo);
CUtils::dump(1U, text, data, 9U);
break;
}
}
// Regenerate the previous super blocks Embedded Data or substitude the LC for it
if (m_rfEmbeddedData[m_rfEmbeddedReadN].isValid())
lcss = m_rfEmbeddedData[m_rfEmbeddedReadN].getData(data + 2U, m_rfN);
else
lcss = m_rfEmbeddedLC.getData(data + 2U, m_rfN);
// Regenerate the EMB
emb.setColorCode(m_colorCode);
emb.setLCSS(lcss);
emb.getData(data + 2U);
if (!m_rfTimeout) {
data[0U] = TAG_DATA;
data[1U] = 0x00U;
writeNetworkRF(data, DT_VOICE, errors);
if (m_embeddedLCOnly) {
// Only send the previously received LC
lcss = m_rfEmbeddedLC.getData(data + 2U, m_rfN);
// Regenerate the EMB
emb.setColorCode(m_colorCode);
emb.setLCSS(lcss);
emb.getData(data + 2U);
}
if (m_duplex)
writeQueueRF(data);
return true;
}
return false;
} else if (m_rfState == RS_RF_LATE_ENTRY) {
CDMREMB emb;
emb.putData(data + 2U);
// If we haven't received an LC yet, then be strict on the color code
unsigned char colorCode = emb.getColorCode();
if (colorCode != m_colorCode)
return false;
m_rfEmbeddedLC.addData(data + 2U, emb.getLCSS());
CDMRLC* lc = m_rfEmbeddedLC.getLC();
if (lc != NULL) {
unsigned int srcId = lc->getSrcId();
unsigned int dstId = lc->getDstId();
FLCO flco = lc->getFLCO();
if (!CDMRAccessControl::validateSrcId(srcId)) {
LogMessage("DMR Slot %u, RF user %u rejected", m_slotNo, srcId);
delete lc;
return false;
}
if (!CDMRAccessControl::validateTGId(m_slotNo, flco == FLCO_GROUP, dstId)) {
LogMessage("DMR Slot %u, RF user %u rejected for using TG %u", m_slotNo, srcId, dstId);
delete lc;
return false;
}
lc->setOVCM(m_ovcm);
m_rfLC = lc;
// The standby LC data
m_rfEmbeddedLC.setLC(*m_rfLC);
m_rfEmbeddedData[0U].setLC(*m_rfLC);
m_rfEmbeddedData[1U].setLC(*m_rfLC);
// Create a dummy start frame to replace the received frame
unsigned char start[DMR_FRAME_LENGTH_BYTES + 2U];
CSync::addDMRDataSync(start + 2U, m_duplex);
CDMRFullLC fullLC;
fullLC.encode(*m_rfLC, start + 2U, DT_VOICE_LC_HEADER);
CDMRSlotType slotType;
slotType.setColorCode(m_colorCode);
slotType.setDataType(DT_VOICE_LC_HEADER);
slotType.getData(start + 2U);
start[0U] = TAG_DATA;
start[1U] = 0x00U;
m_rfTimeoutTimer.start();
m_rfTimeout = false;
m_rfFrames = 0U;
m_rfSeqNo = 0U;
m_rfBits = 1U;
m_rfErrs = 0U;
m_rfEmbeddedReadN = 0U;
m_rfEmbeddedWriteN = 1U;
m_rfTalkerId = TALKER_ID_NONE;
m_minRSSI = m_rssi;
m_maxRSSI = m_rssi;
m_aveRSSI = m_rssi;
m_rssiCount = 1U;
if (m_duplex) {
m_queue.clear();
m_modem->writeDMRAbort(m_slotNo);
for (unsigned int i = 0U; i < NO_HEADERS_DUPLEX; i++)
writeQueueRF(start);
}
writeNetworkRF(start, DT_VOICE_LC_HEADER);
m_rfN = data[1U] & 0x0FU;
if (m_rfN > 5U)
return false;
if (m_rfN == m_lastrfN)
return false;
m_lastrfN = m_rfN;
// Regenerate the EMB
emb.getData(data + 2U);
// Send the original audio frame out
unsigned int errors = 0U;
unsigned char fid = m_rfLC->getFID();
if (fid == FID_ETSI || fid == FID_DMRA) {
errors = m_fec.regenerateDMR(data + 2U);
LogDebug("DMR Slot %u, audio sequence no. %u, errs: %u/141 (%.1f%%)", m_slotNo, m_rfN, errors, float(errors) / 1.41F);
m_rfErrs += errors;
}
m_rfBits += 141U;
m_rfFrames++;
data[0U] = TAG_DATA;
data[1U] = 0x00U;
if (m_duplex)
writeQueueRF(data);
writeNetworkRF(data, DT_VOICE, errors);
m_rfState = RS_RF_AUDIO;
std::string src = m_lookup->find(srcId);
std::string dst = m_lookup->find(dstId);
if (m_netState == RS_NET_IDLE) {
setShortLC(m_slotNo, dstId, flco, ACTIVITY_VOICE);
m_display->writeDMR(m_slotNo, src, flco == FLCO_GROUP, dst, "R");
m_display->writeDMRRSSI(m_slotNo, m_rssi);
m_display->writeDMRBER(m_slotNo, float(errors) / 1.41F);
}
LogMessage("DMR Slot %u, received RF late entry from %s to %s%s", m_slotNo, src.c_str(), flco == FLCO_GROUP ? "TG " : "", dst.c_str());
return true;
}
}
}
return false;
}
unsigned int CDMRSlot::readModem(unsigned char* data)
{
assert(data != NULL);
if (m_queue.isEmpty())
return 0U;
unsigned char len = 0U;
m_queue.getData(&len, 1U);
m_queue.getData(data, len);
return len;
}
void CDMRSlot::writeEndRF(bool writeEnd)
{
m_rfState = RS_RF_LISTENING;
if (m_netState == RS_NET_IDLE) {
setShortLC(m_slotNo, 0U);
m_display->clearDMR(m_slotNo);
}
if (writeEnd) {
if (m_netState == RS_NET_IDLE && m_duplex && !m_rfTimeout) {
// Create a dummy start end frame
unsigned char data[DMR_FRAME_LENGTH_BYTES + 2U];
CSync::addDMRDataSync(data + 2U, m_duplex);
CDMRFullLC fullLC;
fullLC.encode(*m_rfLC, data + 2U, DT_TERMINATOR_WITH_LC);
CDMRSlotType slotType;
slotType.setColorCode(m_colorCode);
slotType.setDataType(DT_TERMINATOR_WITH_LC);
slotType.getData(data + 2U);
data[0U] = TAG_EOT;
data[1U] = 0x00U;
for (unsigned int i = 0U; i < m_hangCount; i++)
writeQueueRF(data);
}
}
m_rfTimeoutTimer.stop();
m_rfTimeout = false;
m_rfFrames = 0U;
m_rfErrs = 0U;
m_rfBits = 1U;
m_rfSeqNo = 0U;
m_rfN = 0U;
delete m_rfLC;
m_rfLC = NULL;
}
void CDMRSlot::writeEndNet(bool writeEnd)
{
m_netState = RS_NET_IDLE;
setShortLC(m_slotNo, 0U);
m_display->clearDMR(m_slotNo);
m_lastFrameValid = false;
if (writeEnd && !m_netTimeout) {
// Create a dummy start end frame
unsigned char data[DMR_FRAME_LENGTH_BYTES + 2U];
CSync::addDMRDataSync(data + 2U, m_duplex);
CDMRFullLC fullLC;
fullLC.encode(*m_netLC, data + 2U, DT_TERMINATOR_WITH_LC);
CDMRSlotType slotType;
slotType.setColorCode(m_colorCode);
slotType.setDataType(DT_TERMINATOR_WITH_LC);
slotType.getData(data + 2U);
data[0U] = TAG_EOT;
data[1U] = 0x00U;
if (m_duplex) {
for (unsigned int i = 0U; i < m_hangCount; i++)
writeQueueNet(data);
} else {
for (unsigned int i = 0U; i < 3U; i++)
writeQueueNet(data);
}
}
m_networkWatchdog.stop();
m_netTimeoutTimer.stop();
m_packetTimer.stop();
m_netTimeout = false;
m_netFrames = 0U;
m_netLost = 0U;