719 lines
16 KiB
C++
719 lines
16 KiB
C++
/*
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* Copyright (C) 2015,2016 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; version 2 of the License.
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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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#include "SlotType.h"
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#include "ShortLC.h"
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#include "DMRSlot.h"
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#include "Defines.h"
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#include "DMRSync.h"
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#include "FullLC.h"
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#include "CSBK.h"
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#include "Utils.h"
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#include "EMB.h"
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#include "CRC.h"
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#include "Log.h"
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#include <cassert>
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#include <ctime>
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unsigned int CDMRSlot::m_colorCode = 0U;
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CModem* CDMRSlot::m_modem = NULL;
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CHomebrewDMRIPSC* CDMRSlot::m_network = NULL;
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IDisplay* CDMRSlot::m_display = NULL;
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unsigned char* CDMRSlot::m_idle = NULL;
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FLCO CDMRSlot::m_flco1;
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unsigned char CDMRSlot::m_id1 = 0U;
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FLCO CDMRSlot::m_flco2;
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unsigned char CDMRSlot::m_id2 = 0U;
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// #define DUMP_DMR
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CDMRSlot::CDMRSlot(unsigned int slotNo, unsigned int timeout) :
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m_slotNo(slotNo),
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m_radioQueue(1000U),
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m_networkQueue(100U),
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m_state(SS_LISTENING),
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m_embeddedLC(),
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m_lc(NULL),
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m_seqNo(0U),
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m_n(0U),
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m_playoutTimer(1000U, 0U, 500U),
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m_networkWatchdog(1000U, 2U),
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m_timeoutTimer(1000U, timeout),
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m_fp(NULL)
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{
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}
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CDMRSlot::~CDMRSlot()
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{
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}
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void CDMRSlot::writeModem(unsigned char *data)
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{
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if (data[0U] == TAG_LOST && m_state == SS_RELAYING_RF) {
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LogMessage("DMR Slot %u, transmission lost", m_slotNo);
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writeEndOfTransmission();
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return;
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}
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if (data[0U] == TAG_LOST && m_state == SS_LATE_ENTRY) {
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m_state = SS_LISTENING;
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return;
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}
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if (m_state == SS_RELAYING_NETWORK)
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return;
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bool dataSync = (data[1U] & DMR_SYNC_DATA) == DMR_SYNC_DATA;
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bool audioSync = (data[1U] & DMR_SYNC_AUDIO) == DMR_SYNC_AUDIO;
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if (dataSync) {
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CSlotType slotType;
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slotType.putData(data + 2U);
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unsigned char colorCode = slotType.getColorCode();
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unsigned char dataType = slotType.getDataType();
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if (colorCode != m_colorCode)
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return;
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if (dataType == DT_VOICE_LC_HEADER) {
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if (m_state != SS_RELAYING_RF) {
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CFullLC fullLC;
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m_lc = fullLC.decode(data + 2U, DT_VOICE_LC_HEADER);
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if (m_lc == NULL) {
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LogMessage("DMR Slot %u: unable to decode the LC", m_slotNo);
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return;
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}
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// Regenerate the LC
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fullLC.encode(*m_lc, data + 2U, DT_VOICE_LC_HEADER);
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// Regenerate the Slot Type
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slotType.getData(data + 2U);
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// Convert the Data Sync to be from the BS
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CDMRSync sync;
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sync.addSync(data + 2U, DST_BS_DATA);
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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m_n = 0U;
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m_networkWatchdog.stop();
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m_timeoutTimer.start();
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m_seqNo = 0U;
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for (unsigned i = 0U; i < 3U; i++) {
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writeNetwork(data, DT_VOICE_LC_HEADER);
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writeRadioQueue(data);
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}
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m_state = SS_RELAYING_RF;
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setShortLC(m_slotNo, m_lc->getDstId(), m_lc->getFLCO());
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m_display->writeDMR(m_slotNo, m_lc->getSrcId(), m_lc->getFLCO() == FLCO_GROUP, m_lc->getDstId());
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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());
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}
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} else if (dataType == DT_VOICE_PI_HEADER) {
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if (m_state == SS_RELAYING_RF) {
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// Regenerate the Slot Type
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slotType.getData(data + 2U);
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// Convert the Data Sync to be from the BS
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CDMRSync sync;
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sync.addSync(data + 2U, DST_BS_DATA);
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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m_n = 0U;
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writeNetwork(data, DT_VOICE_PI_HEADER);
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writeRadioQueue(data);
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LogMessage("DMR Slot %u, received PI header", m_slotNo);
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} else {
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// Should save the PI header for after we have a valid LC
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}
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} else {
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// Ignore wakeup CSBKs
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if (dataType == DT_CSBK) {
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CCSBK csbk(data + 2U);
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CSBKO csbko = csbk.getCSBKO();
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if (csbko == CSBKO_BSDWNACT)
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return;
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}
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if (m_state == SS_RELAYING_RF) {
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unsigned char end[DMR_FRAME_LENGTH_BYTES + 2U];
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// Generate the LC
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CFullLC fullLC;
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fullLC.encode(*m_lc, end + 2U, DT_TERMINATOR_WITH_LC);
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// Generate the Slot Type
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CSlotType slotType;
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slotType.setColorCode(m_colorCode);
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slotType.setDataType(DT_TERMINATOR_WITH_LC);
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slotType.getData(end + 2U);
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// Set the Data Sync to be from the BS
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CDMRSync sync;
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sync.addSync(end + 2U, DST_BS_DATA);
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end[0U] = TAG_EOT;
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end[1U] = 0x00U;
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writeNetwork(end, DT_TERMINATOR_WITH_LC);
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writeRadioQueue(end);
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LogMessage("DMR Slot %u, received RF end of transmission", m_slotNo);
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// 480ms of idle to space things out
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for (unsigned int i = 0U; i < 8U; i++)
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writeRadioQueue(m_idle);
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writeEndOfTransmission();
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if (dataType == DT_TERMINATOR_WITH_LC)
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return;
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}
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// Regenerate the Slot Type
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slotType.getData(data + 2U);
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// Convert the Data Sync to be from the BS
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CDMRSync sync;
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sync.addSync(data + 2U, DST_BS_DATA);
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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writeNetwork(data, dataType);
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writeRadioQueue(data);
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}
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} else if (audioSync) {
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if (m_state == SS_RELAYING_RF) {
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// Convert the Audio Sync to be from the BS
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CDMRSync sync;
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sync.addSync(data + 2U, DST_BS_AUDIO);
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unsigned char fid = m_lc->getFID();
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if (fid == FID_ETSI || fid == FID_DMRA)
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; // AMBE FEC
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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m_n = 0U;
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writeRadioQueue(data);
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writeNetwork(data, DT_VOICE_SYNC);
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} else if (m_state == SS_LISTENING) {
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m_state = SS_LATE_ENTRY;
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}
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} else {
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if (m_state == SS_RELAYING_RF) {
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// Regenerate the EMB
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CEMB emb;
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emb.putData(data + 2U);
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emb.setColorCode(m_colorCode);
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emb.getData(data + 2U);
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unsigned char fid = m_lc->getFID();
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if (fid == FID_ETSI || fid == FID_DMRA)
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; // AMBE FEC
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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m_n++;
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writeRadioQueue(data);
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writeNetwork(data, DT_VOICE);
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} else if (m_state == SS_LATE_ENTRY) {
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// If we haven't received an LC yet, then be strict on the color code
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CEMB emb;
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emb.putData(data + 2U);
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unsigned char colorCode = emb.getColorCode();
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if (colorCode != m_colorCode)
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return;
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m_lc = m_embeddedLC.addData(data + 2U, emb.getLCSS());
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if (m_lc != NULL) {
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// Create a dummy start frame to replace the received frame
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unsigned char start[DMR_FRAME_LENGTH_BYTES + 2U];
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CDMRSync sync;
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sync.addSync(start + 2U, DST_BS_DATA);
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CFullLC fullLC;
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fullLC.encode(*m_lc, start + 2U, DT_VOICE_LC_HEADER);
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CSlotType slotType;
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slotType.setColorCode(m_colorCode);
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slotType.setDataType(DT_VOICE_LC_HEADER);
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slotType.getData(start + 2U);
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start[0U] = TAG_DATA;
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start[1U] = 0x00U;
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m_n = 0U;
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m_networkWatchdog.stop();
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m_timeoutTimer.start();
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m_seqNo = 0U;
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for (unsigned int i = 0U; i < 3U; i++) {
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writeNetwork(start, DT_VOICE_LC_HEADER);
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writeRadioQueue(start);
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}
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// Send the original audio frame out
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unsigned char fid = m_lc->getFID();
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if (fid == FID_ETSI || fid == FID_DMRA)
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; // AMBE FEC
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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m_n++;
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writeRadioQueue(data);
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writeNetwork(data, DT_VOICE);
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m_state = SS_RELAYING_RF;
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setShortLC(m_slotNo, m_lc->getDstId(), m_lc->getFLCO());
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m_display->writeDMR(m_slotNo, m_lc->getSrcId(), m_lc->getFLCO() == FLCO_GROUP, m_lc->getDstId());
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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());
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}
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}
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}
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}
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unsigned int CDMRSlot::readModem(unsigned char* data)
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{
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if (m_radioQueue.isEmpty())
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return 0U;
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unsigned char len = 0U;
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m_radioQueue.getData(&len, 1U);
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m_radioQueue.getData(data, len);
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return len;
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}
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void CDMRSlot::writeEndOfTransmission()
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{
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m_state = SS_LISTENING;
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setShortLC(m_slotNo, 0U);
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m_display->clearDMR(m_slotNo);
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m_networkWatchdog.stop();
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m_timeoutTimer.stop();
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delete m_lc;
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m_lc = NULL;
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}
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void CDMRSlot::writeNetwork(const CDMRData& dmrData)
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{
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if (m_state == SS_RELAYING_RF || m_state == SS_LATE_ENTRY)
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return;
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m_networkWatchdog.start();
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unsigned char dataType = dmrData.getDataType();
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unsigned char data[DMR_FRAME_LENGTH_BYTES + 2U];
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dmrData.getData(data + 2U);
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if (dataType == DT_VOICE_LC_HEADER) {
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if (m_state != SS_RELAYING_NETWORK) {
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CFullLC fullLC;
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m_lc = fullLC.decode(data + 2U, DT_VOICE_LC_HEADER);
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if (m_lc == NULL)
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m_lc = new CLC(dmrData.getFLCO(), dmrData.getSrcId(), dmrData.getDstId());
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// Regenerate the LC
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fullLC.encode(*m_lc, data + 2U, DT_VOICE_LC_HEADER);
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// Regenerate the Slot Type
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CSlotType slotType;
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slotType.setColorCode(m_colorCode);
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slotType.setDataType(DT_VOICE_LC_HEADER);
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slotType.getData(data + 2U);
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// Convert the Data Sync to be from the BS
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CDMRSync sync;
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sync.addSync(data + 2U, DST_BS_DATA);
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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m_playoutTimer.start();
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m_timeoutTimer.start();
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for (unsigned int i = 0U; i < 3U; i++)
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writeNetworkQueue(data);
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m_state = SS_RELAYING_NETWORK;
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setShortLC(m_slotNo, m_lc->getDstId(), m_lc->getFLCO());
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m_display->writeDMR(m_slotNo, m_lc->getSrcId(), m_lc->getFLCO() == FLCO_GROUP, m_lc->getDstId());
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#if defined(DUMP_DMR)
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openFile();
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writeFile(data);
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#endif
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LogMessage("DMR Slot %u, received network header from %u to %s%u", m_slotNo, m_lc->getSrcId(), m_lc->getFLCO() == FLCO_GROUP ? "TG " : "", m_lc->getDstId());
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}
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} else if (dataType == DT_VOICE_PI_HEADER) {
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if (m_state != SS_RELAYING_NETWORK)
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return;
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// Regenerate the Slot Type
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CSlotType slotType;
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slotType.setColorCode(m_colorCode);
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slotType.setDataType(DT_VOICE_PI_HEADER);
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slotType.getData(data + 2U);
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// Convert the Data Sync to be from the BS
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CDMRSync sync;
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sync.addSync(data + 2U, DST_BS_DATA);
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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writeNetworkQueue(data);
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#if defined(DUMP_DMR)
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writeFile(data);
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#endif
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} else if (dataType == DT_TERMINATOR_WITH_LC) {
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if (m_state != SS_RELAYING_NETWORK)
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return;
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// Regenerate the LC
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CFullLC fullLC;
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fullLC.encode(*m_lc, data + 2U, DT_TERMINATOR_WITH_LC);
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// Regenerate the Slot Type
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CSlotType slotType;
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slotType.setColorCode(m_colorCode);
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slotType.setDataType(DT_TERMINATOR_WITH_LC);
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slotType.getData(data + 2U);
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// Convert the Data Sync to be from the BS
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CDMRSync sync;
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sync.addSync(data + 2U, DST_BS_DATA);
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data[0U] = TAG_EOT;
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data[1U] = 0x00U;
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writeNetworkQueue(data);
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writeEndOfTransmission();
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#if defined(DUMP_DMR)
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writeFile(data);
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closeFile();
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#endif
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LogMessage("DMR Slot %u, received network end of transmission", m_slotNo);
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} else if (dataType == DT_VOICE_SYNC) {
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if (m_state != SS_RELAYING_NETWORK)
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return;
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// Convert the Audio Sync to be from the BS
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CDMRSync sync;
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sync.addSync(data + 2U, DST_BS_AUDIO);
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unsigned char fid = m_lc->getFID();
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if (fid == FID_ETSI || fid == FID_DMRA)
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; // AMBE FEC
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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writeNetworkQueue(data);
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#if defined(DUMP_DMR)
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writeFile(data);
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#endif
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} else if (dataType == DT_VOICE) {
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if (m_state != SS_RELAYING_NETWORK)
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return;
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unsigned char fid = m_lc->getFID();
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if (fid == FID_ETSI || fid == FID_DMRA)
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; // AMBE FEC
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// Change the color code in the EMB
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CEMB emb;
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emb.putData(data + 2U);
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emb.setColorCode(m_colorCode);
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emb.getData(data + 2U);
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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writeNetworkQueue(data);
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#if defined(DUMP_DMR)
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writeFile(data);
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#endif
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} else {
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if (m_state != SS_RELAYING_NETWORK)
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return;
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// Change the Color Code of the Slot Type
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CSlotType slotType;
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slotType.putData(data + 2U);
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slotType.setColorCode(m_colorCode);
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slotType.getData(data + 2U);
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// Convert the Data Sync to be from the BS
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CDMRSync sync;
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sync.addSync(data + 2U, DST_BS_DATA);
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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writeNetworkQueue(data);
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#if defined(DUMP_DMR)
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writeFile(data);
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#endif
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}
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}
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void CDMRSlot::clock(unsigned int ms)
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{
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m_timeoutTimer.clock(ms);
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m_playoutTimer.clock(ms);
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if (m_playoutTimer.isRunning() && m_playoutTimer.hasExpired()) {
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while (!m_networkQueue.isEmpty()) {
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unsigned char len = 0U;
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m_networkQueue.getData(&len, 1U);
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unsigned char buffer[100U];
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m_networkQueue.getData(buffer, len);
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|
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m_radioQueue.addData(&len, 1U);
|
|
m_radioQueue.addData(buffer, len);
|
|
}
|
|
}
|
|
|
|
if (m_state == SS_RELAYING_NETWORK) {
|
|
m_networkWatchdog.clock(ms);
|
|
|
|
if (m_networkWatchdog.hasExpired()) {
|
|
LogMessage("DMR Slot %u, network watchdog has expired", m_slotNo);
|
|
writeEndOfTransmission();
|
|
#if defined(DUMP_DMR)
|
|
closeFile();
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
void CDMRSlot::writeRadioQueue(const unsigned char *data)
|
|
{
|
|
unsigned char len = DMR_FRAME_LENGTH_BYTES + 2U;
|
|
m_radioQueue.addData(&len, 1U);
|
|
|
|
// If the timeout has expired, replace the audio with idles to keep the slot busy
|
|
if (m_timeoutTimer.isRunning() && m_timeoutTimer.hasExpired())
|
|
m_radioQueue.addData(m_idle, len);
|
|
else
|
|
m_radioQueue.addData(data, len);
|
|
}
|
|
|
|
void CDMRSlot::writeNetworkQueue(const unsigned char *data)
|
|
{
|
|
// If the timeout has expired, send nothing
|
|
if (!m_timeoutTimer.isRunning() || !m_timeoutTimer.hasExpired()) {
|
|
unsigned char len = DMR_FRAME_LENGTH_BYTES + 2U;
|
|
m_networkQueue.addData(&len, 1U);
|
|
|
|
m_networkQueue.addData(data, len);
|
|
}
|
|
}
|
|
|
|
void CDMRSlot::writeNetwork(const unsigned char* data, unsigned char dataType)
|
|
{
|
|
assert(m_lc != NULL);
|
|
|
|
if (m_network == NULL)
|
|
return;
|
|
|
|
// Don't send to the network if the timeout has expired
|
|
if (m_timeoutTimer.isRunning() && m_timeoutTimer.hasExpired())
|
|
return;
|
|
|
|
CDMRData dmrData;
|
|
dmrData.setSlotNo(m_slotNo);
|
|
dmrData.setDataType(dataType);
|
|
dmrData.setSrcId(m_lc->getSrcId());
|
|
dmrData.setDstId(m_lc->getDstId());
|
|
dmrData.setFLCO(m_lc->getFLCO());
|
|
dmrData.setN(m_n);
|
|
dmrData.setSeqNo(m_seqNo);
|
|
|
|
m_seqNo++;
|
|
|
|
dmrData.setData(data + 2U);
|
|
|
|
m_network->write(dmrData);
|
|
}
|
|
|
|
void CDMRSlot::init(unsigned int colorCode, CModem* modem, CHomebrewDMRIPSC* network, IDisplay* display)
|
|
{
|
|
assert(modem != NULL);
|
|
assert(display != NULL);
|
|
|
|
m_colorCode = colorCode;
|
|
m_modem = modem;
|
|
m_network = network;
|
|
m_display = display;
|
|
|
|
m_idle = new unsigned char[DMR_FRAME_LENGTH_BYTES + 2U];
|
|
|
|
::memcpy(m_idle + 2U, IDLE_DATA, DMR_FRAME_LENGTH_BYTES);
|
|
|
|
// Generate the Slot Type
|
|
CSlotType slotType;
|
|
slotType.setColorCode(colorCode);
|
|
slotType.setDataType(DT_IDLE);
|
|
slotType.getData(m_idle + 2U);
|
|
|
|
m_idle[0U] = TAG_DATA;
|
|
m_idle[1U] = 0x00U;
|
|
}
|
|
|
|
void CDMRSlot::setShortLC(unsigned int slotNo, unsigned int id, FLCO flco)
|
|
{
|
|
assert(m_modem != NULL);
|
|
|
|
switch (slotNo) {
|
|
case 1U:
|
|
m_id1 = 0U;
|
|
m_flco1 = flco;
|
|
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;
|
|
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;
|
|
}
|
|
|
|
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_flco1 == FLCO_GROUP)
|
|
lc[1U] |= 0x80U;
|
|
else
|
|
lc[1U] |= 0x90U;
|
|
}
|
|
|
|
if (m_id2 != 0U) {
|
|
lc[3U] = m_id2;
|
|
if (m_flco2 == FLCO_GROUP)
|
|
lc[1U] |= 0x08U;
|
|
else
|
|
lc[1U] |= 0x09U;
|
|
}
|
|
|
|
lc[4U] = CCRC::crc8(lc, 4U);
|
|
|
|
unsigned char sLC[9U];
|
|
|
|
CUtils::dump(1U, "Input Short LC", lc, 5U);
|
|
|
|
CShortLC shortLC;
|
|
shortLC.encode(lc, sLC);
|
|
|
|
CUtils::dump(1U, "Output Short LC", sLC, 9U);
|
|
|
|
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;
|
|
}
|
|
}
|