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MMDVMHost-Private/DMRSlot.cpp

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/*
* Copyright (C) 2015,2016,2017,2018 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;
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_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 (data[0U] == TAG_LOST && m_rfState == RS_RF_AUDIO) {
if (m_rssi != 0U)
LogMessage("DMR Slot %u, RF voice transmission lost, %.1f seconds, BER: %.1f%%, RSSI: -%u/-%u/-%u dBm", m_slotNo, 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, %.1f seconds, BER: %.1f%%", m_slotNo, 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) {
LogMessage("DMR Slot %u, RF data transmission lost", m_slotNo);
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;
}
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);
}
}
if (m_rssi != 0U)
LogMessage("DMR Slot %u, received RF end of voice transmission, %.1f seconds, BER: %.1f%%, RSSI: -%u/-%u/-%u dBm", m_slotNo, 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, %.1f seconds, BER: %.1f%%", m_slotNo, 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", m_slotNo);
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;
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;
}
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;
m_netErrs = 0U;
m_netBits = 1U;
m_netN = 0U;
delete m_netLC;
m_netLC = NULL;
#if defined(DUMP_DMR)
closeFile();
#endif
}
void CDMRSlot::writeNetwork(const CDMRData& dmrData)
{
if (m_rfState != RS_RF_LISTENING && m_netState == RS_NET_IDLE)
return;
m_networkWatchdog.start();
unsigned char dataType = dmrData.getDataType();
unsigned char data[DMR_FRAME_LENGTH_BYTES + 2U];
dmrData.getData(data + 2U);
if (dataType == DT_VOICE_LC_HEADER) {
if (m_netState == RS_NET_AUDIO)
return;
CDMRFullLC fullLC;
CDMRLC* lc = fullLC.decode(data + 2U, DT_VOICE_LC_HEADER);
if (lc == NULL) {
LogMessage("DMR Slot %u, bad LC received from the network, replacing", m_slotNo);
lc = new CDMRLC(dmrData.getFLCO(), dmrData.getSrcId(), dmrData.getDstId());
}
unsigned int dstId = lc->getDstId();
unsigned int srcId = lc->getSrcId();
FLCO flco = lc->getFLCO();
if (dstId != dmrData.getDstId() || srcId != dmrData.getSrcId() || flco != dmrData.getFLCO())
LogWarning("DMR Slot %u, DMRD header doesn't match the DMR RF header: %u->%s%u %u->%s%u", m_slotNo,
dmrData.getSrcId(), dmrData.getFLCO() == FLCO_GROUP ? "TG" : "", dmrData.getDstId(),
srcId, flco == FLCO_GROUP ? "TG" : "", dstId);
m_netLC = lc;
// The standby LC data
m_netEmbeddedLC.setLC(*m_netLC);
m_netEmbeddedData[0U].setLC(*m_netLC);
m_netEmbeddedData[1U].setLC(*m_netLC);
// Regenerate the LC data
fullLC.encode(*m_netLC, data + 2U, DT_VOICE_LC_HEADER);
// Regenerate the Slot Type
CDMRSlotType slotType;
slotType.setColorCode(m_colorCode);
slotType.setDataType(DT_VOICE_LC_HEADER);
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_lastFrameValid = false;
m_netTimeoutTimer.start();
m_netTimeout = false;
m_netFrames = 0U;
m_netLost = 0U;
m_netBits = 1U;
m_netErrs = 0U;
m_netEmbeddedReadN = 0U;
m_netEmbeddedWriteN = 1U;
m_netTalkerId = TALKER_ID_NONE;
if (m_duplex) {
m_queue.clear();
m_modem->writeDMRAbort(m_slotNo);
}
for (unsigned int i = 0U; i < m_jitterSlots; i++)
writeQueueNet(m_idle);
if (m_duplex) {
for (unsigned int i = 0U; i < NO_HEADERS_DUPLEX; i++)
writeQueueNet(data);
} else {
for (unsigned int i = 0U; i < NO_HEADERS_SIMPLEX; i++)
writeQueueNet(data);
}
m_netState = RS_NET_AUDIO;
setShortLC(m_slotNo, dstId, flco, ACTIVITY_VOICE);
std::string src = m_lookup->find(srcId);
std::string dst = m_lookup->find(dstId);
std::string cn = m_lookup->findWithName(srcId);
m_display->writeDMR(m_slotNo, cn, flco == FLCO_GROUP, dst, "N");
#if defined(DUMP_DMR)
openFile();
writeFile(data);
#endif
LogMessage("DMR Slot %u, received network voice header from %s to %s%s", m_slotNo, src.c_str(), flco == FLCO_GROUP ? "TG " : "", dst.c_str());
} else if (dataType == DT_VOICE_PI_HEADER) {
if (m_netState != RS_NET_AUDIO) {
CDMRLC* lc = new CDMRLC(dmrData.getFLCO(), dmrData.getSrcId(), dmrData.getDstId());
unsigned int dstId = lc->getDstId();
unsigned int srcId = lc->getSrcId();
m_netLC = lc;
m_lastFrameValid = false;
m_netTimeoutTimer.start();
m_netTimeout = false;
if (m_duplex) {
m_queue.clear();
m_modem->writeDMRAbort(m_slotNo);
}
for (unsigned int i = 0U; i < m_jitterSlots; i++)
writeQueueNet(m_idle);
// Create a dummy start frame
unsigned char start[DMR_FRAME_LENGTH_BYTES + 2U];
CSync::addDMRDataSync(start + 2U, m_duplex);
CDMRFullLC fullLC;
fullLC.encode(*m_netLC, 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;
if (m_duplex) {
for (unsigned int i = 0U; i < NO_HEADERS_DUPLEX; i++)
writeQueueRF(start);
} else {
for (unsigned int i = 0U; i < NO_HEADERS_SIMPLEX; i++)
writeQueueRF(start);
}
#if defined(DUMP_DMR)
openFile();
#endif
m_netFrames = 0U;
m_netLost = 0U;
m_netBits = 1U;
m_netErrs = 0U;
m_netState = RS_NET_AUDIO;
setShortLC(m_slotNo, dstId, m_netLC->getFLCO(), ACTIVITY_VOICE);
std::string src = m_lookup->find(srcId);
std::string dst = m_lookup->find(dstId);
m_display->writeDMR(m_slotNo, src, m_netLC->getFLCO() == FLCO_GROUP, dst, "N");
LogMessage("DMR Slot %u, received network late entry from %s to %s%s", m_slotNo, src.c_str(), m_netLC->getFLCO() == FLCO_GROUP ? "TG " : "", dst.c_str());
}
// Regenerate the Slot Type
CDMRSlotType slotType;
slotType.setColorCode(m_colorCode);
slotType.setDataType(DT_VOICE_PI_HEADER);
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;
writeQueueNet(data);
#if defined(DUMP_DMR)
writeFile(data);
#endif
} else if (dataType == DT_TERMINATOR_WITH_LC) {
if (m_netState != RS_NET_AUDIO)
return;
// Regenerate the LC data
CDMRFullLC fullLC;
fullLC.encode(*m_netLC, data + 2U, DT_TERMINATOR_WITH_LC);
// Regenerate the Slot Type
CDMRSlotType slotType;
slotType.setColorCode(m_colorCode);
slotType.setDataType(DT_TERMINATOR_WITH_LC);
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_netTimeout) {
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);
}
}
#if defined(DUMP_DMR)
writeFile(data);
closeFile();
#endif
// We've received the voice header and terminator haven't we?
m_netFrames += 2U;
LogMessage("DMR Slot %u, received network end of voice transmission, %.1f seconds, %u%% packet loss, BER: %.1f%%", m_slotNo, float(m_netFrames) / 16.667F, (m_netLost * 100U) / m_netFrames, float(m_netErrs * 100U) / float(m_netBits));
m_display->writeDMRTA(m_slotNo, NULL, " ");
writeEndNet();
} else if (dataType == DT_DATA_HEADER) {
if (m_netState == RS_NET_DATA)
return;
CDMRDataHeader dataHeader;
bool valid = dataHeader.put(data + 2U);
if (!valid) {
LogMessage("DMR Slot %u, unable to decode the network data header", m_slotNo);
return;
}
bool gi = dataHeader.getGI();
unsigned int srcId = dataHeader.getSrcId();
unsigned int dstId = dataHeader.getDstId();
m_netFrames = dataHeader.getBlocks();
// Regenerate the data header
dataHeader.get(data + 2U);
// Regenerate the Slot Type
CDMRSlotType slotType;
slotType.setColorCode(m_colorCode);
slotType.setDataType(DT_DATA_HEADER);
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_netFrames == 0U ? TAG_EOT : TAG_DATA;
data[1U] = 0x00U;
// Put a small delay into starting transmission
writeQueueNet(m_idle);
writeQueueNet(m_idle);
writeQueueNet(data);
m_netState = RS_NET_DATA;
setShortLC(m_slotNo, dstId, gi ? FLCO_GROUP : FLCO_USER_USER, ACTIVITY_DATA);
std::string src = m_lookup->find(srcId);
std::string dst = m_lookup->find(dstId);
m_display->writeDMR(m_slotNo, src, gi, dst, "N");
LogMessage("DMR Slot %u, received network data header from %s to %s%s, %u blocks", m_slotNo, src.c_str(), gi ? "TG ": "", dst.c_str(), m_netFrames);
if (m_netFrames == 0U) {
LogMessage("DMR Slot %u, ended network data transmission", m_slotNo);
writeEndNet();
}
} else if (dataType == DT_VOICE_SYNC) {
if (m_netState == RS_NET_IDLE) {
CDMRLC* lc = new CDMRLC(dmrData.getFLCO(), dmrData.getSrcId(), dmrData.getDstId());
unsigned int dstId = lc->getDstId();
unsigned int srcId = lc->getSrcId();
m_netLC = lc;
// The standby LC data
m_netEmbeddedLC.setLC(*m_netLC);
m_netEmbeddedData[0U].setLC(*m_netLC);
m_netEmbeddedData[1U].setLC(*m_netLC);
m_lastFrameValid = false;
m_netTimeoutTimer.start();
m_netTimeout = false;
if (m_duplex) {
m_queue.clear();
m_modem->writeDMRAbort(m_slotNo);
}
for (unsigned int i = 0U; i < m_jitterSlots; i++)
writeQueueNet(m_idle);
// Create a dummy start frame
unsigned char start[DMR_FRAME_LENGTH_BYTES + 2U];
CSync::addDMRDataSync(start + 2U, m_duplex);
CDMRFullLC fullLC;
fullLC.encode(*m_netLC, 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;
if (m_duplex) {
for (unsigned int i = 0U; i < NO_HEADERS_DUPLEX; i++)
writeQueueRF(start);
} else {
for (unsigned int i = 0U; i < NO_HEADERS_SIMPLEX; i++)
writeQueueRF(start);
}
#if defined(DUMP_DMR)
openFile();
#endif
m_netFrames = 0U;
m_netLost = 0U;
m_netBits = 1U;
m_netErrs = 0U;
m_netEmbeddedReadN = 0U;
m_netEmbeddedWriteN = 1U;
m_netTalkerId = TALKER_ID_NONE;
m_netState = RS_NET_AUDIO;
setShortLC(m_slotNo, dstId, m_netLC->getFLCO(), ACTIVITY_VOICE);
std::string src = m_lookup->find(srcId);
std::string dst = m_lookup->find(dstId);
m_display->writeDMR(m_slotNo, src, m_netLC->getFLCO() == FLCO_GROUP, dst, "N");
LogMessage("DMR Slot %u, received network late entry from %s to %s%s", m_slotNo, src.c_str(), m_netLC->getFLCO() == FLCO_GROUP ? "TG " : "", dst.c_str());
}
if (m_netState == RS_NET_AUDIO) {
unsigned char fid = m_netLC->getFID();
if (fid == FID_ETSI || fid == FID_DMRA)
m_netErrs += m_fec.regenerateDMR(data + 2U);
m_netBits += 141U;
data[0U] = TAG_DATA;
data[1U] = 0x00U;
// Convert the Audio Sync to be from the BS or MS as needed
CSync::addDMRAudioSync(data + 2U, m_duplex);
// Initialise the lost packet data
if (m_netFrames == 0U) {
::memcpy(m_lastFrame, data, DMR_FRAME_LENGTH_BYTES + 2U);
m_lastFrameValid = true;
m_netN = 5U;
m_netLost = 0U;
}
if (insertSilence(data, dmrData.getN())) {
if (!m_netTimeout)
writeQueueNet(data);
}
m_netEmbeddedReadN = (m_netEmbeddedReadN + 1U) % 2U;
m_netEmbeddedWriteN = (m_netEmbeddedWriteN + 1U) % 2U;
m_netEmbeddedData[m_netEmbeddedWriteN].reset();
m_packetTimer.start();
m_elapsed.start();
m_netFrames++;
// Save details in case we need to infill data
m_netN = dmrData.getN();
#if defined(DUMP_DMR)
writeFile(data);
#endif
}
} else if (dataType == DT_VOICE) {
if (m_netState != RS_NET_AUDIO)
return;
unsigned char fid = m_netLC->getFID();
if (fid == FID_ETSI || fid == FID_DMRA)
m_netErrs += m_fec.regenerateDMR(data + 2U);
m_netBits += 141U;
// 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_netEmbeddedData[m_netEmbeddedWriteN].addData(data + 2U, lcss);
if (ret) {
FLCO flco = m_netEmbeddedData[m_netEmbeddedWriteN].getFLCO();
unsigned char data[9U];
m_netEmbeddedData[m_netEmbeddedWriteN].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);
}
break;
case FLCO_TALKER_ALIAS_HEADER:
if (!(m_netTalkerId & TALKER_ID_HEADER)) {
if (!m_netTalkerId)
m_rfTalkerAlias.reset();
m_rfTalkerAlias.add(0, data + 2U, 7U);
m_display->writeDMRTA(m_slotNo, (unsigned char*)m_rfTalkerAlias.get(), "N");
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, Embedded Talker Alias Header", m_slotNo);
CUtils::dump(2U, text, data, 9U);
}
m_netTalkerId |= TALKER_ID_HEADER;
}
break;
case FLCO_TALKER_ALIAS_BLOCK1:
if (!(m_netTalkerId & TALKER_ID_BLOCK1)) {
if (!m_netTalkerId)
m_rfTalkerAlias.reset();
m_rfTalkerAlias.add(1, data + 2U, 7U);
m_display->writeDMRTA(m_slotNo, (unsigned char*)m_rfTalkerAlias.get(), "N");
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, Embedded Talker Alias Block 1", m_slotNo);
CUtils::dump(2U, text, data, 9U);
}
m_netTalkerId |= TALKER_ID_BLOCK1;
}
break;
case FLCO_TALKER_ALIAS_BLOCK2:
if (!(m_netTalkerId & TALKER_ID_BLOCK2)) {
if (!m_netTalkerId)
m_rfTalkerAlias.reset();
m_rfTalkerAlias.add(2, data + 2U, 7U);
m_display->writeDMRTA(m_slotNo, (unsigned char*)m_rfTalkerAlias.get(), "N");
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, Embedded Talker Alias Block 2", m_slotNo);
CUtils::dump(2U, text, data, 9U);
}
m_netTalkerId |= TALKER_ID_BLOCK2;
}
break;
case FLCO_TALKER_ALIAS_BLOCK3:
if (!(m_netTalkerId & TALKER_ID_BLOCK3)) {
if (!m_netTalkerId)
m_rfTalkerAlias.reset();
m_rfTalkerAlias.add(3, data+2U, 7U);
m_display->writeDMRTA(m_slotNo, (unsigned char*)m_rfTalkerAlias.get(), "N");
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, Embedded Talker Alias Block 3", m_slotNo);
CUtils::dump(2U, text, data, 9U);
}
m_netTalkerId |= TALKER_ID_BLOCK3;
}
break;
default:
::sprintf(text, "DMR Slot %u, Unknown Embedded Data", m_slotNo);
CUtils::dump(1U, text, data, 9U);
break;
}
}
if (m_embeddedLCOnly) {
// Only send the previously received LC
lcss = m_netEmbeddedLC.getData(data + 2U, dmrData.getN());
} else {
// Regenerate the previous super blocks Embedded Data or substitude the LC for it
if (m_netEmbeddedData[m_netEmbeddedReadN].isValid())
lcss = m_netEmbeddedData[m_netEmbeddedReadN].getData(data + 2U, dmrData.getN());
else
lcss = m_netEmbeddedLC.getData(data + 2U, dmrData.getN());
}
// Regenerate the EMB
emb.setColorCode(m_colorCode);
emb.setLCSS(lcss);
emb.getData(data + 2U);
data[0U] = TAG_DATA;
data[1U] = 0x00U;
// Initialise the lost packet data
if (m_netFrames == 0U) {
::memcpy(m_lastFrame, data, DMR_FRAME_LENGTH_BYTES + 2U);
m_lastFrameValid = true;
m_netN = 5U;
m_netLost = 0U;
}
if (insertSilence(data, dmrData.getN())) {
if (!m_netTimeout)
writeQueueNet(data);
}
m_packetTimer.start();
m_elapsed.start();
m_netFrames++;
// Save details in case we need to infill data
m_netN = dmrData.getN();
#if defined(DUMP_DMR)
writeFile(data);
#endif
} else if (dataType == DT_CSBK) {
CDMRCSBK csbk;
bool valid = csbk.put(data + 2U);
if (!valid) {
LogMessage("DMR Slot %u, unable to decode the network CSBK", m_slotNo);
return;
}
CSBKO csbko = csbk.getCSBKO();
if (csbko == CSBKO_BSDWNACT)
return;
bool gi = csbk.getGI();
unsigned int srcId = csbk.getSrcId();
unsigned int dstId = csbk.getDstId();
// Regenerate the CSBK data
csbk.get(data + 2U);
// Regenerate the Slot Type
CDMRSlotType slotType;
slotType.putData(data + 2U);
slotType.setColorCode(m_colorCode);
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 (csbko == CSBKO_PRECCSBK && csbk.getDataContent()) {
unsigned int cbf = NO_PREAMBLE_CSBK + csbk.getCBF() - 1U;
for (unsigned int i = 0U; i < NO_PREAMBLE_CSBK; i++, cbf--) {
// Change blocks to follow
csbk.setCBF(cbf);
// Regenerate the CSBK data
csbk.get(data + 2U);
// Regenerate the Slot Type
CDMRSlotType slotType;
slotType.putData(data + 2U);
slotType.setColorCode(m_colorCode);
slotType.getData(data + 2U);
// Convert the Data Sync to be from the BS or MS as needed
CSync::addDMRDataSync(data + 2U, m_duplex);
writeQueueNet(data);
}
} else
writeQueueNet(data);
#if defined(DUMP_DMR)
openFile();
writeFile(data);
closeFile();
#endif
std::string src = m_lookup->find(srcId);
std::string dst = m_lookup->find(dstId);
switch (csbko) {
case CSBKO_UUVREQ:
LogMessage("DMR Slot %u, received network 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 network 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 network 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 network %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 network CSBK type - 0x%02X", m_slotNo, csbko);
break;
}
// If data preamble, signal its existence
if (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, "N");
}
} else if (dataType == DT_RATE_12_DATA || dataType == DT_RATE_34_DATA || dataType == DT_RATE_1_DATA) {
if (m_netState != RS_NET_DATA || m_netFrames == 0U) {
writeEndNet();
return;
}
// 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 network rate 3/4 data", m_slotNo);
CUtils::dump(1U, "Data", data + 2U, DMR_FRAME_LENGTH_BYTES);
}
}
// Regenerate the Slot Type
CDMRSlotType slotType;
slotType.putData(data + 2U);
slotType.setColorCode(m_colorCode);
slotType.getData(data + 2U);
// Convert the Data Sync to be from the BS or MS as needed
CSync::addDMRDataSync(data + 2U, m_duplex);
m_netFrames--;
data[0U] = m_netFrames == 0U ? TAG_EOT : TAG_DATA;
data[1U] = 0x00U;
#if defined(DUMP_DMR)
writeFile(data);
#endif
writeQueueNet(data);
if (m_netFrames == 0U) {
LogMessage("DMR Slot %u, ended network data transmission", m_slotNo);
writeEndNet();
}
} else {
// Unhandled data type
LogWarning("DMR Slot %u, unhandled network data type - 0x%02X", m_slotNo, dataType);
}
}
void CDMRSlot::logGPSPosition(const unsigned char* data)
{
unsigned int errorI = (data[2U] & 0x0E) >> 1U;
const char* error;
switch (errorI) {
case 0U:
error = "< 2m";
break;
case 1U:
error = "< 20m";
break;
case 2U:
error = "< 200m";
break;
case 3U:
error = "< 2km";
break;
case 4U:
error = "< 20km";
break;
case 5U:
error = "< 200km";
break;
case 6U:
error = "> 200km";
break;
default:
error = "not known";
break;
}
int32_t longitudeI = ((data[2U] & 0x01U) << 31) | (data[3U] << 23) | (data[4U] << 15) | (data[5U] << 7);
longitudeI >>= 7;
int32_t latitudeI = (data[6U] << 24) | (data[7U] << 16) | (data[8U] << 8);
latitudeI >>= 8;
float longitude = 360.0F / 33554432.0F; // 360/2^25 steps
float latitude = 180.0F / 16777216.0F; // 180/2^24 steps
longitude *= float(longitudeI);
latitude *= float(latitudeI);
LogMessage("GPS position [%f,%f] (Position error %s)", latitude, longitude, error);
}
void CDMRSlot::clock()
{
unsigned int ms = m_interval.elapsed();
m_interval.start();
m_rfTimeoutTimer.clock(ms);
if (m_rfTimeoutTimer.isRunning() && m_rfTimeoutTimer.hasExpired()) {
if (!m_rfTimeout) {
LogMessage("DMR Slot %u, RF user has timed out", m_slotNo);
m_rfTimeout = true;
}
}
m_netTimeoutTimer.clock(ms);
if (m_netTimeoutTimer.isRunning() && m_netTimeoutTimer.hasExpired()) {
if (!m_netTimeout) {
LogMessage("DMR Slot %u, network user has timed out", m_slotNo);
m_netTimeout = true;
}
}
if (m_netState == RS_NET_AUDIO || m_netState == RS_NET_DATA) {
m_networkWatchdog.clock(ms);
if (m_networkWatchdog.hasExpired()) {
if (m_netState == RS_NET_AUDIO) {
// We've received the voice header haven't we?
m_netFrames += 1U;
LogMessage("DMR Slot %u, network watchdog has expired, %.1f seconds, %u%% packet loss, BER: %.1f%%", m_slotNo, float(m_netFrames) / 16.667F, (m_netLost * 100U) / m_netFrames, float(m_netErrs * 100U) / float(m_netBits));
writeEndNet(true);
#if defined(DUMP_DMR)
closeFile();
#endif
} else {
LogMessage("DMR Slot %u, network watchdog has expired", m_slotNo);
writeEndNet();
#if defined(DUMP_DMR)
closeFile();
#endif
}
}
}
if (m_netState == RS_NET_AUDIO) {
m_packetTimer.clock(ms);
if (m_packetTimer.isRunning() && m_packetTimer.hasExpired()) {
unsigned int elapsed = m_elapsed.elapsed();
if (elapsed >= m_jitterTime) {
LogDebug("DMR Slot %u, lost audio for %ums filling in", m_slotNo, elapsed);
insertSilence(m_jitterSlots);
m_elapsed.start();
}
m_packetTimer.start();
}
}
}
void CDMRSlot::writeQueueRF(const unsigned char *data)
{
assert(data != NULL);
if (m_netState != RS_NET_IDLE)
return;
unsigned char len = DMR_FRAME_LENGTH_BYTES + 2U;
unsigned int space = m_queue.freeSpace();
if (space < (len + 1U)) {
LogError("DMR Slot %u, overflow in the DMR slot RF queue", m_slotNo);
return;
}
m_queue.addData(&len, 1U);
m_queue.addData(data, len);
}
void CDMRSlot::writeNetworkRF(const unsigned char* data, unsigned char dataType, FLCO flco, unsigned int srcId, unsigned int dstId, unsigned char errors)
{
assert(data != NULL);
if (m_netState != RS_NET_IDLE)
return;
if (m_network == NULL)
return;
CDMRData dmrData;
dmrData.setSlotNo(m_slotNo);
dmrData.setDataType(dataType);
dmrData.setSrcId(srcId);
dmrData.setDstId(dstId);
dmrData.setFLCO(flco);
dmrData.setN(m_rfN);
dmrData.setSeqNo(m_rfSeqNo);
dmrData.setBER(errors);
dmrData.setRSSI(m_rssi);
m_rfSeqNo++;
dmrData.setData(data + 2U);
m_network->write(dmrData);
}
void CDMRSlot::writeNetworkRF(const unsigned char* data, unsigned char dataType, unsigned char errors)
{
assert(data != NULL);
assert(m_rfLC != NULL);
writeNetworkRF(data, dataType, m_rfLC->getFLCO(), m_rfLC->getSrcId(), m_rfLC->getDstId(), errors);
}
void CDMRSlot::writeQueueNet(const unsigned char *data)
{
assert(data != NULL);
unsigned char len = DMR_FRAME_LENGTH_BYTES + 2U;
unsigned int space = m_queue.freeSpace();
if (space < (len + 1U)) {
LogError("DMR Slot %u, overflow in the DMR slot RF queue", m_slotNo);
return;
}
m_queue.addData(&len, 1U);
m_queue.addData(data, len);
}
void CDMRSlot::init(unsigned int colorCode, bool embeddedLCOnly, bool dumpTAData, unsigned int callHang, CModem* modem, CDMRNetwork* network, CDisplay* display, bool duplex, CDMRLookup* lookup, CRSSIInterpolator* rssiMapper, unsigned int jitter)
{
assert(modem != NULL);
assert(display != NULL);
assert(lookup != NULL);
assert(rssiMapper != NULL);
m_colorCode = colorCode;
m_embeddedLCOnly = embeddedLCOnly;
m_dumpTAData = dumpTAData;
m_modem = modem;
m_network = network;
m_display = display;
m_duplex = duplex;
m_lookup = lookup;
m_hangCount = callHang * 17U;
m_rssiMapper = rssiMapper;
m_jitterTime = jitter;
float jitter_tmp = float(jitter) / 360.0F;
m_jitterSlots = (unsigned int) (std::ceil(jitter_tmp) * 6.0F);
m_idle = new unsigned char[DMR_FRAME_LENGTH_BYTES + 2U];
::memcpy(m_idle, DMR_IDLE_DATA, DMR_FRAME_LENGTH_BYTES + 2U);
// Generate the Slot Type for the Idle frame
CDMRSlotType slotType;
slotType.setColorCode(colorCode);
slotType.setDataType(DT_IDLE);
slotType.getData(m_idle + 2U);
}
void CDMRSlot::setShortLC(unsigned int slotNo, unsigned int id, FLCO flco, ACTIVITY_TYPE type)
{
assert(m_modem != NULL);
switch (slotNo) {
case 1U:
m_id1 = 0U;
m_flco1 = flco;
m_activity1 = type;
if (id != 0U) {
unsigned char buffer[3U];
buffer[0U] = (id << 16) & 0xFFU;
buffer[1U] = (id << 8) & 0xFFU;
buffer[2U] = (id << 0) & 0xFFU;
m_id1 = CCRC::crc8(buffer, 3U);
}
break;
case 2U:
m_id2 = 0U;
m_flco2 = flco;
m_activity2 = type;
if (id != 0U) {
unsigned char buffer[3U];
buffer[0U] = (id << 16) & 0xFFU;
buffer[1U] = (id << 8) & 0xFFU;
buffer[2U] = (id << 0) & 0xFFU;
m_id2 = CCRC::crc8(buffer, 3U);
}
break;
default:
LogError("Invalid slot number passed to setShortLC - %u", slotNo);
return;
}
// If we have no activity to report, let the modem send the null Short LC when it's ready
if (m_id1 == 0U && m_id2 == 0U)
return;
unsigned char lc[5U];
lc[0U] = 0x01U;
lc[1U] = 0x00U;
lc[2U] = 0x00U;
lc[3U] = 0x00U;
if (m_id1 != 0U) {
lc[2U] = m_id1;
if (m_activity1 == ACTIVITY_VOICE && m_flco1 == FLCO_GROUP)
lc[1U] |= 0x08U;
else if (m_activity1 == ACTIVITY_VOICE && m_flco1 == FLCO_USER_USER)
lc[1U] |= 0x09U;
else if (m_activity1 == ACTIVITY_DATA && m_flco1 == FLCO_GROUP)
lc[1U] |= 0x0BU;
else if (m_activity1 == ACTIVITY_DATA && m_flco1 == FLCO_USER_USER)
lc[1U] |= 0x0AU;
else if (m_activity1 == ACTIVITY_CSBK && m_flco1 == FLCO_GROUP)
lc[1U] |= 0x02U;
else if (m_activity1 == ACTIVITY_CSBK && m_flco1 == FLCO_USER_USER)
lc[1U] |= 0x03U;
else if (m_activity1 == ACTIVITY_EMERG && m_flco1 == FLCO_GROUP)
lc[1U] |= 0x0CU;
else if (m_activity1 == ACTIVITY_EMERG && m_flco1 == FLCO_USER_USER)
lc[1U] |= 0x0DU;
}
if (m_id2 != 0U) {
lc[3U] = m_id2;
if (m_activity2 == ACTIVITY_VOICE && m_flco2 == FLCO_GROUP)
lc[1U] |= 0x80U;
else if (m_activity2 == ACTIVITY_VOICE && m_flco2 == FLCO_USER_USER)
lc[1U] |= 0x90U;
else if (m_activity2 == ACTIVITY_DATA && m_flco2 == FLCO_GROUP)
lc[1U] |= 0xB0U;
else if (m_activity2 == ACTIVITY_DATA && m_flco2 == FLCO_USER_USER)
lc[1U] |= 0xA0U;
else if (m_activity2 == ACTIVITY_CSBK && m_flco2 == FLCO_GROUP)
lc[1U] |= 0x20U;
else if (m_activity2 == ACTIVITY_CSBK && m_flco2 == FLCO_USER_USER)
lc[1U] |= 0x30U;
else if (m_activity2 == ACTIVITY_EMERG && m_flco2 == FLCO_GROUP)
lc[1U] |= 0xC0U;
else if (m_activity2 == ACTIVITY_EMERG && m_flco2 == FLCO_USER_USER)
lc[1U] |= 0xD0U;
}
lc[4U] = CCRC::crc8(lc, 4U);
unsigned char sLC[9U];
CDMRShortLC shortLC;
shortLC.encode(lc, sLC);
m_modem->writeDMRShortLC(sLC);
}
bool CDMRSlot::openFile()
{
if (m_fp != NULL)
return true;
time_t t;
::time(&t);
struct tm* tm = ::localtime(&t);
char name[100U];
::sprintf(name, "DMR_%u_%04d%02d%02d_%02d%02d%02d.ambe", m_slotNo, tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
m_fp = ::fopen(name, "wb");
if (m_fp == NULL)
return false;
::fwrite("DMR", 1U, 3U, m_fp);
return true;
}
bool CDMRSlot::writeFile(const unsigned char* data)
{
if (m_fp == NULL)
return false;
::fwrite(data, 1U, DMR_FRAME_LENGTH_BYTES + 2U, m_fp);
return true;
}
void CDMRSlot::closeFile()
{
if (m_fp != NULL) {
::fclose(m_fp);
m_fp = NULL;
}
}
bool CDMRSlot::insertSilence(const unsigned char* data, unsigned char seqNo)
{
assert(data != NULL);
// Do not send duplicate
if (seqNo == m_netN)
return false;
// Check to see if we have any spaces to fill?
unsigned char seq = (m_netN + 1U) % 6U;
if (seq == seqNo) {
// Just copy the data, nothing else to do here
::memcpy(m_lastFrame, data, DMR_FRAME_LENGTH_BYTES + 2U);
m_lastFrameValid = true;
return true;
}
unsigned int count = (seqNo - seq + 6U) % 6U;
insertSilence(count);
::memcpy(m_lastFrame, data, DMR_FRAME_LENGTH_BYTES + 2U);
m_lastFrameValid = true;
return true;
}
void CDMRSlot::insertSilence(unsigned int count)
{
unsigned char data[DMR_FRAME_LENGTH_BYTES + 2U];
if (m_lastFrameValid) {
::memcpy(data, m_lastFrame, 2U); // The control data
::memcpy(data + 2U, m_lastFrame + 24U + 2U, 9U); // Copy the last audio block to the first
::memcpy(data + 24U + 2U, data + 2U, 9U); // Copy the last audio block to the last
::memcpy(data + 9U + 2U, data + 2U, 5U); // Copy the last audio block to the middle (1/2)
::memcpy(data + 19U + 2U, data + 4U + 2U, 5U); // Copy the last audio block to the middle (2/2)
} else {
// Not sure what to do if this isn't AMBE audio
::memcpy(data, DMR_SILENCE_DATA, DMR_FRAME_LENGTH_BYTES + 2U);
}
unsigned char n = (m_netN + 1U) % 6U;
unsigned char fid = m_netLC->getFID();
CDMREMB emb;
emb.setColorCode(m_colorCode);
for (unsigned int i = 0U; i < count; i++) {
// Only use our silence frame if its AMBE audio data
if (fid == FID_ETSI || fid == FID_DMRA) {
if (i > 0U) {
::memcpy(data, DMR_SILENCE_DATA, DMR_FRAME_LENGTH_BYTES + 2U);
m_lastFrameValid = false;
}
}
if (n == 0U) {
CSync::addDMRAudioSync(data + 2U, m_duplex);
} else {
unsigned char lcss = m_netEmbeddedLC.getData(data + 2U, n);
emb.setLCSS(lcss);
emb.getData(data + 2U);
}
writeQueueNet(data);
m_netN = n;
m_netFrames++;
m_netLost++;
n = (n + 1U) % 6U;
}
}
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