void CDMRSlot::writeModem(unsigned char *data)
{
if (data[0U] == TAG_LOST && m_state == SS_RELAYING_RF) {
LogMessage("DMR Slot %u, transmission lost", m_slotNo);
writeEndOfTransmission();
return;
}
if (data[0U] == TAG_LOST && m_state == SS_LATE_ENTRY) {
m_state = SS_LISTENING;
return;
}
if (m_state == SS_RELAYING_NETWORK)
return;
bool dataSync = (data[1U] & DMR_SYNC_DATA) == DMR_SYNC_DATA;
bool audioSync = (data[1U] & DMR_SYNC_AUDIO) == DMR_SYNC_AUDIO;
if (dataSync) {
CSlotType slotType;
slotType.putData(data + 2U);
unsigned char colorCode = slotType.getColorCode();
unsigned char dataType = slotType.getDataType();
if (colorCode != m_colorCode)
return;
if (dataType == DT_VOICE_LC_HEADER) {
if (m_state != SS_RELAYING_RF) {
CFullLC fullLC;
m_lc = fullLC.decode(data + 2U, DT_VOICE_LC_HEADER);
if (m_lc == NULL) {
LogMessage("DMR Slot %u: unable to decode the LC", m_slotNo);
return;
}
// Regenerate the LC
fullLC.encode(*m_lc, data + 2U, DT_VOICE_LC_HEADER);
// Regenerate the Slot Type
slotType.getData(data + 2U);
// Convert the Data Sync to be from the BS
CDMRSync sync;
sync.addSync(data + 2U, DST_BS_DATA);
data[0U] = TAG_DATA;
data[1U] = 0x00U;
m_n = 0U;
m_networkWatchdog.stop();
m_timeoutTimer.start();
m_seqNo = 0U;
for (unsigned i = 0U; i < 3U; i++) {
writeNetwork(data, DT_VOICE_LC_HEADER);
writeRadioQueue(data);
}
m_state = SS_RELAYING_RF;
setShortLC(m_slotNo, m_lc->getDstId(), m_lc->getFLCO());
m_display->writeDMR(m_slotNo, m_lc->getSrcId(), m_lc->getFLCO() == FLCO_GROUP, m_lc->getDstId());
LogMessage("DMR Slot %u, received RF header from %u to %s%u", m_slotNo, m_lc->getSrcId(), m_lc->getFLCO() == FLCO_GROUP ? "TG " : "", m_lc->getDstId());
}
} else if (dataType == DT_VOICE_PI_HEADER) {
if (m_state == SS_RELAYING_RF) {
// Regenerate the Slot Type
slotType.getData(data + 2U);
// Convert the Data Sync to be from the BS
CDMRSync sync;
sync.addSync(data + 2U, DST_BS_DATA);
data[0U] = TAG_DATA;
data[1U] = 0x00U;
m_n = 0U;
writeNetwork(data, DT_VOICE_PI_HEADER);
writeRadioQueue(data);
LogMessage("DMR Slot %u, received PI header", m_slotNo);
} else {
// Should save the PI header for after we have a valid LC
}
} else {
// Ignore wakeup CSBKs
if (dataType == DT_CSBK) {
CCSBK csbk(data + 2U);
CSBKO csbko = csbk.getCSBKO();
if (csbko == CSBKO_BSDWNACT)
return;
}
if (m_state == SS_RELAYING_RF) {
unsigned char end[DMR_FRAME_LENGTH_BYTES + 2U];
// Generate the LC
CFullLC fullLC;
fullLC.encode(*m_lc, end + 2U, DT_TERMINATOR_WITH_LC);
// Generate the Slot Type
CSlotType slotType;
slotType.setColorCode(m_colorCode);
slotType.setDataType(DT_TERMINATOR_WITH_LC);
slotType.getData(end + 2U);
// Set the Data Sync to be from the BS
CDMRSync sync;
sync.addSync(end + 2U, DST_BS_DATA);
end[0U] = TAG_EOT;
end[1U] = 0x00U;
writeNetwork(end, DT_TERMINATOR_WITH_LC);
writeRadioQueue(end);
LogMessage("DMR Slot %u, received RF end of transmission", m_slotNo);
// 480ms of idle to space things out
for (unsigned int i = 0U; i < 8U; i++)
writeRadioQueue(m_idle);
writeEndOfTransmission();
if (dataType == DT_TERMINATOR_WITH_LC)
return;
}
// Regenerate the Slot Type
slotType.getData(data + 2U);
// Convert the Data Sync to be from the BS
CDMRSync sync;
sync.addSync(data + 2U, DST_BS_DATA);
data[0U] = TAG_DATA;
data[1U] = 0x00U;
writeNetwork(data, dataType);
writeRadioQueue(data);
}
} else if (audioSync) {
if (m_state == SS_RELAYING_RF) {
// Convert the Audio Sync to be from the BS
CDMRSync sync;
sync.addSync(data + 2U, DST_BS_AUDIO);
unsigned char fid = m_lc->getFID();
if (fid == FID_ETSI || fid == FID_DMRA)
; // AMBE FEC
data[0U] = TAG_DATA;
data[1U] = 0x00U;
m_n = 0U;
writeRadioQueue(data);
writeNetwork(data, DT_VOICE_SYNC);
} else if (m_state == SS_LISTENING) {
m_state = SS_LATE_ENTRY;
}
} else {
if (m_state == SS_RELAYING_RF) {
// Regenerate the EMB
CEMB emb;
emb.putData(data + 2U);
emb.setColorCode(m_colorCode);
emb.getData(data + 2U);
unsigned char fid = m_lc->getFID();
if (fid == FID_ETSI || fid == FID_DMRA)
; // AMBE FEC
data[0U] = TAG_DATA;
data[1U] = 0x00U;
m_n++;
writeRadioQueue(data);
writeNetwork(data, DT_VOICE);
} else if (m_state == SS_LATE_ENTRY) {
// If we haven't received an LC yet, then be strict on the color code
CEMB emb;
emb.putData(data + 2U);
unsigned char colorCode = emb.getColorCode();
if (colorCode != m_colorCode)
return;
m_lc = m_embeddedLC.addData(data + 2U, emb.getLCSS());
if (m_lc != NULL) {
// Create a dummy start frame to replace the received frame
unsigned char start[DMR_FRAME_LENGTH_BYTES + 2U];
CDMRSync sync;
sync.addSync(start + 2U, DST_BS_DATA);
CFullLC fullLC;
fullLC.encode(*m_lc, start + 2U, DT_VOICE_LC_HEADER);
CSlotType slotType;
slotType.setColorCode(m_colorCode);
slotType.setDataType(DT_VOICE_LC_HEADER);
slotType.getData(start + 2U);
start[0U] = TAG_DATA;
start[1U] = 0x00U;
m_n = 0U;
m_networkWatchdog.stop();
m_timeoutTimer.start();
m_seqNo = 0U;
for (unsigned int i = 0U; i < 3U; i++) {
writeNetwork(start, DT_VOICE_LC_HEADER);
writeRadioQueue(start);
}
// Send the original audio frame out
unsigned char fid = m_lc->getFID();
if (fid == FID_ETSI || fid == FID_DMRA)
; // AMBE FEC
data[0U] = TAG_DATA;
data[1U] = 0x00U;
m_n++;
writeRadioQueue(data);
writeNetwork(data, DT_VOICE);
m_state = SS_RELAYING_RF;
setShortLC(m_slotNo, m_lc->getDstId(), m_lc->getFLCO());
m_display->writeDMR(m_slotNo, m_lc->getSrcId(), m_lc->getFLCO() == FLCO_GROUP, m_lc->getDstId());
LogMessage("DMR Slot %u, received RF late entry from %u to %s%u", m_slotNo, m_lc->getSrcId(), m_lc->getFLCO() == FLCO_GROUP ? "TG " : "", m_lc->getDstId());
}
}
}
}
