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dvmhost/src/host/dmr/packet/Voice.cpp

1521 lines
57 KiB

// SPDX-License-Identifier: GPL-2.0-only
/*
* Digital Voice Modem - Modem Host Software
* GPLv2 Open Source. Use is subject to license terms.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright (C) 2015,2016,2017,2018 Jonathan Naylor, G4KLX
* Copyright (C) 2017-2026 Bryan Biedenkapp, N2PLL
*
*/
#include "Defines.h"
#include "common/dmr/acl/AccessControl.h"
#include "common/dmr/data/EMB.h"
#include "common/dmr/lc/CSBK.h"
#include "common/dmr/lc/FullLC.h"
#include "common/dmr/SlotType.h"
#include "common/dmr/Sync.h"
#include "common/Log.h"
#include "common/Utils.h"
#include "dmr/packet/Voice.h"
#include "dmr/Slot.h"
#include "ActivityLog.h"
#include "HostMain.h"
using namespace dmr;
using namespace dmr::defines;
using namespace dmr::packet;
#include <cassert>
#include <algorithm>
// ---------------------------------------------------------------------------
// Macros
// ---------------------------------------------------------------------------
// Helper macro to check if the host is authoritative and the destination ID is permitted.
#define CHECK_AUTHORITATIVE(_DST_ID) \
if (!m_slot->s_authoritative && m_slot->m_permittedDstId != _DST_ID) { \
if (!g_disableNonAuthoritativeLogging) \
LogWarning(LOG_RF, "[NON-AUTHORITATIVE] Ignoring RF traffic, destination not permitted, dstId = %u", _DST_ID); \
m_slot->m_rfState = RS_RF_LISTENING; \
return false; \
}
// Helper macro to check if the host is authoritative and the destination ID is permitted.
#define CHECK_NET_AUTHORITATIVE(_DST_ID) \
if (!m_slot->s_authoritative && m_slot->m_permittedDstId != _DST_ID) { \
return; \
}
// ---------------------------------------------------------------------------
// Public Class Members
// ---------------------------------------------------------------------------
/* Process DMR voice frame from the RF interface. */
bool Voice::process(uint8_t* data, uint32_t len)
{
assert(data != nullptr);
bool dataSync = (data[1U] & SYNC_DATA) == SYNC_DATA;
bool voiceSync = (data[1U] & SYNC_VOICE) == SYNC_VOICE;
if (dataSync) {
DataType::E dataType = (DataType::E)(data[1U] & 0x0FU);
SlotType slotType;
slotType.setColorCode(m_slot->s_colorCode);
slotType.setDataType(dataType);
if (dataType == DataType::VOICE_LC_HEADER) {
if (m_slot->m_rfState == RS_RF_AUDIO)
return true;
lc::FullLC fullLC;
std::unique_ptr<lc::LC> lc = fullLC.decode(data + 2U, DataType::VOICE_LC_HEADER);
if (lc == nullptr)
return false;
uint32_t srcId = lc->getSrcId();
uint32_t dstId = lc->getDstId();
FLCO::E flco = lc->getFLCO();
CHECK_AUTHORITATIVE(dstId);
if (checkRFTrafficCollision(dstId))
return false;
if (m_slot->m_tsccPayloadDstId != 0U && m_slot->m_tsccPayloadActRetry.isRunning()) {
m_slot->m_tsccPayloadActRetry.stop();
}
// validate source RID
if (!acl::AccessControl::validateSrcId(srcId)) {
if (m_slot->m_data->m_lastRejectId == 0U || m_slot->m_data->m_lastRejectId == srcId) {
LogWarning(LOG_RF, "DMR Slot %u, VOICE_LC_HEADER denial, RID rejection, srcId = %u", m_slot->m_slotNo, srcId);
::ActivityLog("DMR", true, "Slot %u RF voice rejection from %u to %s%u ", m_slot->m_slotNo, srcId, flco == FLCO::GROUP ? "TG " : "", dstId);
}
m_slot->m_rfLastDstId = 0U;
m_slot->m_rfLastSrcId = 0U;
m_slot->m_rfTGHang.stop();
m_slot->m_rfState = RS_RF_REJECTED;
return false;
}
// validate target TID, if the target is a talkgroup
if (flco == FLCO::GROUP) {
if (!acl::AccessControl::validateTGId(m_slot->m_slotNo, dstId)) {
if (m_slot->m_data->m_lastRejectId == 0U || m_slot->m_data->m_lastRejectId == dstId) {
LogWarning(LOG_RF, "DMR Slot %u, VOICE_LC_HEADER denial, TGID rejection, srcId = %u, dstId = %u", m_slot->m_slotNo, srcId, dstId);
::ActivityLog("DMR", true, "Slot %u RF voice rejection from %u to TG %u ", m_slot->m_slotNo, srcId, dstId);
}
m_slot->m_rfLastDstId = 0U;
m_slot->m_rfLastSrcId = 0U;
m_slot->m_rfTGHang.stop();
m_slot->m_rfState = RS_RF_REJECTED;
return false;
}
// are we auto-registering legacy radios to groups?
if (m_slot->m_legacyGroupReg) {
if (!m_slot->s_affiliations->isGroupAff(srcId, dstId)) {
// update dynamic unit registration table
if (!m_slot->s_affiliations->isUnitReg(srcId)) {
m_slot->s_affiliations->unitReg(srcId);
}
if (m_slot->s_network != nullptr)
m_slot->s_network->announceUnitRegistration(srcId);
// update dynamic affiliation table
m_slot->s_affiliations->groupAff(srcId, dstId);
if (m_slot->s_network != nullptr)
m_slot->s_network->announceGroupAffiliation(srcId, dstId);
}
}
}
m_slot->m_data->m_lastRejectId = 0U;
uint8_t fid = lc->getFID();
// NOTE: this is fiddly -- on Motorola a FID of 0x10 indicates a SU has transmitted with Enhanced Privacy enabled -- this might change
// and is not exact science!
bool encrypted = (fid & 0x10U) == 0x10U;
m_slot->m_rfLC = std::move(lc);
// The standby LC data
m_slot->m_voice->m_rfEmbeddedLC.setLC(*m_slot->m_rfLC);
m_slot->m_voice->m_rfEmbeddedData[0U].setLC(*m_slot->m_rfLC);
m_slot->m_voice->m_rfEmbeddedData[1U].setLC(*m_slot->m_rfLC);
// Regenerate the LC data
fullLC.encode(*m_slot->m_rfLC, data + 2U, DataType::VOICE_LC_HEADER);
// Regenerate the Slot Type
slotType.encode(data + 2U);
// Convert the Data Sync to be from the BS or MS as needed
Sync::addDMRDataSync(data + 2U, m_slot->s_duplex);
data[0U] = modem::TAG_DATA;
data[1U] = 0x00U;
m_slot->m_rfTimeoutTimer.start();
m_slot->m_rfTimeout = false;
m_slot->m_rfFrames = 0U;
m_slot->m_rfSeqNo = 0U;
m_slot->m_rfBits = 1U;
m_slot->m_rfErrs = 0U;
m_slot->m_voice->m_rfEmbeddedReadN = 0U;
m_slot->m_voice->m_rfEmbeddedWriteN = 1U;
m_slot->m_voice->m_rfTalkerId = TalkerID::NONE;
m_slot->m_minRSSI = m_slot->m_rssi;
m_slot->m_maxRSSI = m_slot->m_rssi;
m_slot->m_aveRSSI = m_slot->m_rssi;
m_slot->m_rssiCount = 1U;
if (m_slot->s_duplex) {
m_slot->m_txQueue.clear();
m_slot->s_modem->writeDMRAbort(m_slot->m_slotNo);
for (uint32_t i = 0U; i < NO_HEADERS_DUPLEX; i++)
m_slot->addFrame(data);
}
uint8_t controlByte = 0U;
if (m_slot->m_convNetGrantDemand)
controlByte |= network::NET_CTRL_GRANT_DEMAND; // Grant Demand Flag
if (flco == FLCO::PRIVATE)
controlByte |= network::NET_CTRL_U2U; // Unit-to-Unit Flag
m_slot->writeNetwork(data, DataType::VOICE_LC_HEADER, controlByte);
m_slot->m_rfState = RS_RF_AUDIO;
m_slot->m_rfLastDstId = dstId;
m_slot->m_rfLastSrcId = srcId;
if (m_slot->m_netState == RS_NET_IDLE) {
m_slot->setShortLC(m_slot->m_slotNo, dstId, flco, Slot::SLCO_ACT_TYPE::VOICE);
}
if (m_verbose) {
LogInfoEx(LOG_RF, DMR_DT_VOICE_LC_HEADER ", slot = %u, srcId = %u, dstId = %u, FLCO = $%02X, FID = $%02X, PF = %u", m_slot->m_slotNo,
m_slot->m_rfLC->getSrcId(), m_slot->m_rfLC->getDstId(), m_slot->m_rfLC->getFLCO(), m_slot->m_rfLC->getFID(), m_slot->m_rfLC->getPF());
}
::ActivityLog("DMR", true, "Slot %u RF %svoice header from %u to %s%u", m_slot->m_slotNo, encrypted ? "encrypted " : "", srcId, flco == FLCO::GROUP ? "TG " : "", dstId);
LogInfoEx(LOG_RF, "DMR Voice Call, slot = %u, srcId = %u, dstId = %u", m_slot->m_slotNo, srcId, dstId);
return true;
}
else if (dataType == DataType::VOICE_PI_HEADER) {
if (m_slot->m_rfState != RS_RF_AUDIO)
return false;
lc::FullLC fullLC;
std::unique_ptr<lc::PrivacyLC> lc = fullLC.decodePI(data + 2U);
if (lc == nullptr) {
LogWarning(LOG_RF, "DMR Slot %u, VOICE_PI_HEADER, bad LC received, replacing", m_slot->m_slotNo);
lc = std::make_unique<lc::PrivacyLC>();
lc->setDstId(m_slot->m_rfLC->getDstId());
}
m_slot->m_rfPrivacyLC = std::move(lc);
// Regenerate the LC data
fullLC.encodePI(*m_slot->m_rfPrivacyLC, data + 2U);
// Regenerate the Slot Type
slotType.encode(data + 2U);
// Convert the Data Sync to be from the BS or MS as needed
Sync::addDMRDataSync(data + 2U, m_slot->s_duplex);
data[0U] = modem::TAG_DATA;
data[1U] = 0x00U;
if (m_slot->s_duplex)
m_slot->addFrame(data);
m_slot->writeNetwork(data, DataType::VOICE_PI_HEADER, 0U);
if (m_verbose) {
LogInfoEx(LOG_RF, DMR_DT_VOICE_PI_HEADER ", slot = %u, algId = %u, kId = %u, dstId = %u", m_slot->m_slotNo,
m_slot->m_rfPrivacyLC->getAlgId(), m_slot->m_rfPrivacyLC->getKId(), m_slot->m_rfPrivacyLC->getDstId());
uint8_t mi[MI_LENGTH_BYTES];
m_slot->m_rfPrivacyLC->getMI(mi);
LogInfoEx(LOG_RF, DMR_DT_VOICE_PI_HEADER ", slot = %u, Enc Sync, MI = %02X %02X %02X %02X",
m_slot->m_slotNo, mi[0U], mi[1U], mi[2U], mi[3U]);
}
return true;
}
return false;
}
if (voiceSync) {
if (m_slot->m_rfState == RS_RF_AUDIO) {
m_lastRfN = 0U;
// convert the Audio Sync to be from the BS or MS as needed
Sync::addDMRAudioSync(data + 2U, m_slot->s_duplex);
uint32_t errors = 0U;
uint8_t fid = m_slot->m_rfLC->getFID();
bool pf = m_slot->m_rfLC->getPF();
// perform encryption strapping check on the first voice sync frame of a call
::lookups::TalkgroupRuleGroupVoice groupVoice = m_slot->s_tidLookup->find(m_slot->m_rfLC->getDstId());
if (!groupVoice.isInvalid()) {
if (groupVoice.config().strapping() == ::lookups::TG_STRAPPING_STRAPPED) {
bool encrypted = false;
if (m_slot->m_rfPrivacyLC != nullptr) {
if (m_slot->m_rfPrivacyLC->getAlgId() != 0U)
encrypted = true;
}
else if (fid == FID_KENWOOD && pf)
encrypted = true;
if (!encrypted) {
LogWarning(LOG_RF, "DMR Slot %u, VOICE_SYNC denial, TGID enc. strapping rejection, srcId = %u, dstId = %u", m_slot->m_slotNo, m_slot->m_rfLC->getSrcId(), m_slot->m_rfLC->getDstId());
::ActivityLog("DMR", true, "Slot %u RF voice rejection from %u to TG %u ", m_slot->m_slotNo, m_slot->m_rfLC->getSrcId(), m_slot->m_rfLC->getDstId());
m_slot->m_rfLastDstId = 0U;
m_slot->m_rfLastSrcId = 0U;
m_slot->m_rfTGHang.stop();
m_slot->m_rfState = RS_RF_REJECTED;
return false;
}
}
}
if (fid == FID_ETSI || fid == FID_MOT || fid == FID_KENWOOD) {
if (fid == FID_KENWOOD && pf)
errors = 0U; // bryanb: for what we are assuming is Kenwood, these are encrypted frames
// don't bother trying to regenerate or perform FEC
else
errors = m_fec.regenerateDMR(data + 2U);
if (errors > m_slot->m_silenceThreshold) {
insertNullAudio(data + 2U);
m_fec.regenerateDMR(data + 2U);
LogWarning(LOG_RF, DMR_DT_VOICE_SYNC ", exceeded lost audio threshold, filling in");
}
m_slot->m_rfErrs += errors;
}
if (m_verbose) {
LogInfoEx(LOG_RF, DMR_DT_VOICE_SYNC ", audio, slot = %u, srcId = %u, dstId = %u, seqNo = 0, fid = $%02X, pf = %u, errs = %u/141 (%.1f%%)", m_slot->m_slotNo, m_slot->m_rfLC->getSrcId(), m_slot->m_rfLC->getDstId(),
fid, pf, errors, float(errors) / 1.41F);
}
m_slot->m_rfBits += 141U;
m_slot->m_rfFrames++;
m_slot->m_rfTGHang.start();
m_slot->m_netTGHang.stop();
m_slot->m_rfLastDstId = m_slot->m_rfLC->getDstId();
m_slot->m_rfLastSrcId = m_slot->m_rfLC->getSrcId();
m_rfEmbeddedReadN = (m_rfEmbeddedReadN + 1U) % 2U;
m_rfEmbeddedWriteN = (m_rfEmbeddedWriteN + 1U) % 2U;
m_rfEmbeddedData[m_rfEmbeddedWriteN].reset();
if (!m_slot->m_rfTimeout) {
data[0U] = modem::TAG_DATA;
data[1U] = 0x00U;
if (m_slot->s_duplex)
m_slot->addFrame(data);
m_slot->writeNetwork(data, DataType::VOICE_SYNC, 0U, errors);
return true;
}
return false;
}
else if (m_slot->m_rfState == RS_RF_LISTENING) {
m_rfEmbeddedLC.reset();
m_slot->m_rfState = RS_RF_LATE_ENTRY;
return false;
}
}
else {
if (m_slot->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;
uint32_t errors = 0U;
uint8_t fid = m_slot->m_rfLC->getFID();
bool pf = m_slot->m_rfLC->getPF();
// perform encryption strapping check on the voice frame of a call
::lookups::TalkgroupRuleGroupVoice groupVoice = m_slot->s_tidLookup->find(m_slot->m_rfLC->getDstId());
if (!groupVoice.isInvalid()) {
if (groupVoice.config().strapping() == ::lookups::TG_STRAPPING_STRAPPED) {
bool encrypted = false;
if (m_slot->m_rfPrivacyLC != nullptr) {
if (m_slot->m_rfPrivacyLC->getAlgId() != 0U)
encrypted = true;
}
else if (fid == FID_KENWOOD && pf)
encrypted = true;
if (!encrypted) {
LogWarning(LOG_RF, "DMR Slot %u, VOICE_SYNC denial, TGID enc. strapping rejection, srcId = %u, dstId = %u", m_slot->m_slotNo, m_slot->m_rfLC->getSrcId(), m_slot->m_rfLC->getDstId());
::ActivityLog("DMR", true, "Slot %u RF voice rejection from %u to TG %u ", m_slot->m_slotNo, m_slot->m_rfLC->getSrcId(), m_slot->m_rfLC->getDstId());
m_slot->m_rfLastDstId = 0U;
m_slot->m_rfLastSrcId = 0U;
m_slot->m_rfTGHang.stop();
m_slot->m_rfState = RS_RF_REJECTED;
return false;
}
}
}
if (fid == FID_ETSI || fid == FID_MOT || fid == FID_KENWOOD) {
if (fid == FID_KENWOOD && pf)
errors = 0U; // bryanb: for what we are assuming is Kenwood, these are encrypted frames
// don't bother trying to regenerate or perform FEC
else
errors = m_fec.regenerateDMR(data + 2U);
if (errors > m_slot->m_silenceThreshold) {
// get the LCSS from the EMB
data::EMB emb;
emb.decode(data + 2U);
insertNullAudio(data + 2U);
m_fec.regenerateDMR(data + 2U);
// regenerate EMB
emb.encode(data + 2U);
LogWarning(LOG_RF, DMR_DT_VOICE ", exceeded lost audio threshold, filling in");
}
m_slot->m_rfErrs += errors;
}
if (m_verbose) {
LogInfoEx(LOG_RF, DMR_DT_VOICE ", audio, slot = %u, srcId = %u, dstId = %u, seqNo = %u, fid = $%02X, pf = %u, errs = %u/141 (%.1f%%)", m_slot->m_slotNo, m_slot->m_rfLC->getSrcId(), m_slot->m_rfLC->getDstId(),
m_rfN, fid, pf, errors, float(errors) / 1.41F);
}
m_slot->m_rfBits += 141U;
m_slot->m_rfFrames++;
m_slot->m_rfTGHang.start();
m_slot->m_netTGHang.stop();
m_slot->m_rfLastDstId = m_slot->m_rfLC->getDstId();
m_slot->m_rfLastSrcId = m_slot->m_rfLC->getSrcId();
// get the LCSS from the EMB
data::EMB emb;
emb.decode(data + 2U);
uint8_t lcss = emb.getLCSS();
// dump any interesting Embedded Data
bool ret = m_rfEmbeddedData[m_rfEmbeddedWriteN].addData(data + 2U, lcss);
if (ret) {
uint8_t flco = m_rfEmbeddedData[m_rfEmbeddedWriteN].getFLCO();
uint8_t data[9U];
m_rfEmbeddedData[m_rfEmbeddedWriteN].getRawData(data);
char text[80U];
switch (flco) {
case FLCO::GROUP:
case FLCO::PRIVATE:
break;
case FLCO::GPS_INFO:
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, GPS_INFO (Embedded GPS Info)", m_slot->m_slotNo);
Utils::dump(2U, text, data, 9U);
}
if (m_verbose) {
logGPSPosition(m_slot->m_rfLC->getSrcId(), data);
}
break;
case FLCO::TALKER_ALIAS_HEADER:
if (!(m_rfTalkerId & TalkerID::HEADER)) {
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, TALKER_ALIAS_HEADER (Embedded Talker Alias Header)", m_slot->m_slotNo);
Utils::dump(2U, text, data, 9U);
}
m_rfTalkerId |= TalkerID::HEADER;
}
break;
case FLCO::TALKER_ALIAS_BLOCK1:
if (!(m_rfTalkerId & TalkerID::BLOCK1)) {
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, TALKER_ALIAS_BLOCK1 (Embedded Talker Alias Block 1)", m_slot->m_slotNo);
Utils::dump(2U, text, data, 9U);
}
m_rfTalkerId |= TalkerID::BLOCK1;
}
break;
case FLCO::TALKER_ALIAS_BLOCK2:
if (!(m_rfTalkerId & TalkerID::BLOCK2)) {
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, TALKER_ALIAS_BLOCK2 (Embedded Talker Alias Block 2)", m_slot->m_slotNo);
Utils::dump(2U, text, data, 9U);
}
m_rfTalkerId |= TalkerID::BLOCK2;
}
break;
case FLCO::TALKER_ALIAS_BLOCK3:
if (!(m_rfTalkerId & TalkerID::BLOCK3)) {
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, TALKER_ALIAS_BLOCK3 (Embedded Talker Alias Block 3)", m_slot->m_slotNo);
Utils::dump(2U, text, data, 9U);
}
m_rfTalkerId |= TalkerID::BLOCK3;
}
break;
default:
::sprintf(text, "DMR Slot %u, Unknown Embedded Data", m_slot->m_slotNo);
Utils::dump(1U, text, data, 9U);
break;
}
}
// Regenerate the previous super blocks Embedded Data or substitude the LC for it
if (m_rfEmbeddedData[m_rfEmbeddedReadN].valid())
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_slot->s_colorCode);
emb.setLCSS(lcss);
// Emit reverse-channel data in the final voice burst of a superframe
if (m_rfN == 5U) {
applyReverseChannelCommand(m_slot->m_reverseChannelCommand, data, emb);
m_slot->m_reverseChannelCommand = network::NET_ICC::NOP;
}
emb.encode(data + 2U);
if (!m_slot->m_rfTimeout) {
data[0U] = modem::TAG_DATA;
data[1U] = 0x00U;
m_slot->writeNetwork(data, DataType::VOICE, 0U, errors);
if (m_embeddedLCOnly) {
// Only send the previously received LC
lcss = m_rfEmbeddedLC.getData(data + 2U, m_rfN);
// Regenerate the EMB
emb.setColorCode(m_slot->s_colorCode);
emb.setLCSS(lcss);
emb.encode(data + 2U);
}
if (m_slot->s_duplex)
m_slot->addFrame(data);
return true;
}
return false;
}
else if (m_slot->m_rfState == RS_RF_LATE_ENTRY) {
data::EMB emb;
emb.decode(data + 2U);
// If we haven't received an LC yet, then be strict on the color code
uint8_t colorCode = emb.getColorCode();
if (colorCode != m_slot->s_colorCode)
return false;
m_rfEmbeddedLC.addData(data + 2U, emb.getLCSS());
std::unique_ptr<lc::LC> lc = m_rfEmbeddedLC.getLC();
if (lc != nullptr) {
uint32_t srcId = lc->getSrcId();
uint32_t dstId = lc->getDstId();
FLCO::E flco = lc->getFLCO();
CHECK_AUTHORITATIVE(dstId);
if (checkRFTrafficCollision(dstId))
return false;
// validate the source RID
if (!acl::AccessControl::validateSrcId(srcId)) {
LogWarning(LOG_RF, "DMR Slot %u, VOICE denial, RID rejection, srcId = %u", m_slot->m_slotNo, srcId);
m_slot->m_rfState = RS_RF_REJECTED;
return false;
}
// validate the target ID, if the target is a talkgroup
if (flco == FLCO::GROUP) {
if (!acl::AccessControl::validateTGId(m_slot->m_slotNo, dstId)) {
LogWarning(LOG_RF, "DMR Slot %u, VOICE denial, TGID rejection, srcId = %u, dstId = %u", m_slot->m_slotNo, srcId, dstId);
m_slot->m_rfState = RS_RF_REJECTED;
return false;
}
}
m_slot->m_rfLC = std::move(lc);
// The standby LC data
m_rfEmbeddedLC.setLC(*m_slot->m_rfLC);
m_rfEmbeddedData[0U].setLC(*m_slot->m_rfLC);
m_rfEmbeddedData[1U].setLC(*m_slot->m_rfLC);
// Create a dummy start frame to replace the received frame
uint8_t start[DMR_FRAME_LENGTH_BYTES + 2U];
Sync::addDMRDataSync(start + 2U, m_slot->s_duplex);
lc::FullLC fullLC;
fullLC.encode(*m_slot->m_rfLC, start + 2U, DataType::VOICE_LC_HEADER);
SlotType slotType;
slotType.setColorCode(m_slot->s_colorCode);
slotType.setDataType(DataType::VOICE_LC_HEADER);
slotType.encode(start + 2U);
start[0U] = modem::TAG_DATA;
start[1U] = 0x00U;
m_slot->m_rfTimeoutTimer.start();
m_slot->m_rfTimeout = false;
m_slot->m_rfFrames = 0U;
m_slot->m_rfSeqNo = 0U;
m_slot->m_rfBits = 1U;
m_slot->m_rfErrs = 0U;
m_rfEmbeddedReadN = 0U;
m_rfEmbeddedWriteN = 1U;
m_rfTalkerId = TalkerID::NONE;
m_slot->m_minRSSI = m_slot->m_rssi;
m_slot->m_maxRSSI = m_slot->m_rssi;
m_slot->m_aveRSSI = m_slot->m_rssi;
m_slot->m_rssiCount = 1U;
if (m_slot->s_duplex) {
m_slot->m_txQueue.clear();
m_slot->s_modem->writeDMRAbort(m_slot->m_slotNo);
for (uint32_t i = 0U; i < NO_HEADERS_DUPLEX; i++)
m_slot->addFrame(start);
}
uint8_t controlByte = 0U;
if (m_slot->m_convNetGrantDemand)
controlByte |= network::NET_CTRL_GRANT_DEMAND; // Grant Demand Flag
if (flco == FLCO::PRIVATE)
controlByte |= network::NET_CTRL_U2U; // Unit-to-Unit Flag
m_slot->writeNetwork(start, DataType::VOICE_LC_HEADER, controlByte);
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.encode(data + 2U);
// send the original audio frame out
uint32_t errors = 0U;
uint8_t fid = m_slot->m_rfLC->getFID();
bool pf = m_slot->m_rfLC->getPF();
if (fid == FID_ETSI || fid == FID_MOT || fid == FID_KENWOOD) {
if (fid == FID_KENWOOD && pf)
errors = 0U; // bryanb: for what we are assuming is Kenwood, these are encrypted frames
// don't bother trying to regenerate or perform FEC
else
errors = m_fec.regenerateDMR(data + 2U);
if (errors > m_slot->m_silenceThreshold) {
// get the LCSS from the EMB
data::EMB emb;
emb.decode(data + 2U);
insertNullAudio(data + 2U);
m_fec.regenerateDMR(data + 2U);
// regenerate EMB
emb.encode(data + 2U);
LogWarning(LOG_RF, DMR_DT_VOICE ", exceeded lost audio threshold, filling in");
}
m_slot->m_rfErrs += errors;
}
if (m_verbose) {
LogInfoEx(LOG_RF, DMR_DT_VOICE ", audio, slot = %u, sequence no = %u, fid = $%02X, pf = %u, errs = %u/141 (%.1f%%)",
m_slot->m_slotNo, m_rfN, fid, pf, errors, float(errors) / 1.41F);
}
m_slot->m_rfBits += 141U;
m_slot->m_rfFrames++;
data[0U] = modem::TAG_DATA;
data[1U] = 0x00U;
if (m_slot->s_duplex)
m_slot->addFrame(data);
m_slot->writeNetwork(data, DataType::VOICE, 0U, errors);
m_slot->m_rfState = RS_RF_AUDIO;
m_slot->m_rfTGHang.start();
m_slot->m_netTGHang.stop();
m_slot->m_rfLastDstId = dstId;
m_slot->m_rfLastSrcId = srcId;
if (m_slot->m_netState == RS_NET_IDLE) {
m_slot->setShortLC(m_slot->m_slotNo, dstId, flco, Slot::SLCO_ACT_TYPE::VOICE);
}
::ActivityLog("DMR", true, "Slot %u RF late entry from %u to %s%u", m_slot->m_slotNo, srcId, flco == FLCO::GROUP ? "TG " : "", dstId);
LogInfoEx(LOG_RF, "DMR Voice Call, slot = %u, srcId = %u, dstId = %u", m_slot->m_slotNo, srcId, dstId);
return true;
}
}
}
return false;
}
/* Process a voice frame from the network. */
void Voice::processNetwork(const data::NetData& dmrData)
{
uint8_t dataType = dmrData.getDataType();
uint8_t data[DMR_FRAME_LENGTH_BYTES + 2U];
dmrData.getData(data + 2U);
if (dataType == DataType::VOICE_LC_HEADER) {
if (m_slot->m_netState == RS_NET_AUDIO)
return;
lc::FullLC fullLC;
std::unique_ptr<lc::LC> lc = fullLC.decode(data + 2U, DataType::VOICE_LC_HEADER);
if (lc == nullptr) {
LogWarning(LOG_NET, "DMR Slot %u, VOICE_LC_HEADER, bad LC received from the network, replacing", m_slot->m_slotNo);
lc = std::make_unique<lc::LC>(dmrData.getFLCO(), dmrData.getSrcId(), dmrData.getDstId());
}
uint32_t srcId = lc->getSrcId();
uint32_t dstId = lc->getDstId();
FLCO::E flco = lc->getFLCO();
CHECK_NET_AUTHORITATIVE(dstId);
if (checkNetTrafficCollision(dstId))
return;
if (m_slot->m_tsccPayloadDstId != 0U && m_slot->m_tsccPayloadActRetry.isRunning()) {
m_slot->m_tsccPayloadActRetry.stop();
}
if (dstId != dmrData.getDstId() || srcId != dmrData.getSrcId() || flco != dmrData.getFLCO())
LogWarning(LOG_NET, "DMR Slot %u, VOICE_LC_HEADER, header doesn't match the DMR RF header: %u->%s%u %u->%s%u", m_slot->m_slotNo,
dmrData.getSrcId(), dmrData.getFLCO() == FLCO::GROUP ? "TG" : "", dmrData.getDstId(),
srcId, flco == FLCO::GROUP ? "TG" : "", dstId);
if (m_verbose) {
LogInfoEx(LOG_NET, "DMR Slot %u, VOICE_LC_HEADER, srcId = %u, dstId = %u, FLCO = $%02X, FID = $%02X, PF = %u", m_slot->m_slotNo, lc->getSrcId(), lc->getDstId(), lc->getFLCO(), lc->getFID(), lc->getPF());
}
m_slot->m_netLC = std::move(lc);
// The standby LC data
m_slot->m_voice->m_netEmbeddedLC.setLC(*m_slot->m_netLC);
m_slot->m_voice->m_netEmbeddedData[0U].setLC(*m_slot->m_netLC);
m_slot->m_voice->m_netEmbeddedData[1U].setLC(*m_slot->m_netLC);
// Regenerate the LC data
fullLC.encode(*m_slot->m_netLC, data + 2U, DataType::VOICE_LC_HEADER);
// Regenerate the Slot Type
SlotType slotType;
slotType.setColorCode(m_slot->s_colorCode);
slotType.setDataType(DataType::VOICE_LC_HEADER);
slotType.encode(data + 2U);
// Convert the Data Sync to be from the BS or MS as needed
Sync::addDMRDataSync(data + 2U, m_slot->s_duplex);
data[0U] = modem::TAG_DATA;
data[1U] = 0x00U;
m_slot->m_voice->m_lastFrameValid = false;
m_slot->m_netTimeoutTimer.start();
m_slot->m_netTimeout = false;
m_slot->m_netFrames = 0U;
m_slot->m_netLost = 0U;
m_slot->m_netBits = 1U;
m_slot->m_netErrs = 0U;
m_slot->m_voice->m_netEmbeddedReadN = 0U;
m_slot->m_voice->m_netEmbeddedWriteN = 1U;
m_slot->m_voice->m_netTalkerId = TalkerID::NONE;
if (m_slot->s_duplex) {
m_slot->m_txQueue.clear();
m_slot->s_modem->writeDMRAbort(m_slot->m_slotNo);
}
for (uint32_t i = 0U; i < m_slot->s_jitterSlots; i++)
m_slot->addFrame(m_slot->s_idle, true);
if (m_slot->s_duplex) {
for (uint32_t i = 0U; i < NO_HEADERS_DUPLEX; i++)
m_slot->addFrame(data, true);
}
else {
for (uint32_t i = 0U; i < NO_HEADERS_SIMPLEX; i++)
m_slot->addFrame(data, true);
}
m_slot->m_netState = RS_NET_AUDIO;
m_slot->m_netLastDstId = dstId;
m_slot->m_netLastSrcId = srcId;
m_slot->m_netTGHang.start();
m_slot->setShortLC(m_slot->m_slotNo, dstId, flco, Slot::SLCO_ACT_TYPE::VOICE);
if (m_verbose) {
LogInfoEx(LOG_NET, DMR_DT_VOICE_LC_HEADER ", slot = %u, srcId = %u, dstId = %u, FLCO = $%02X, FID = $%02X, PF = %u", m_slot->m_slotNo,
m_slot->m_netLC->getSrcId(), m_slot->m_netLC->getDstId(), m_slot->m_netLC->getFLCO(), m_slot->m_netLC->getFID(), m_slot->m_netLC->getPF());
}
::ActivityLog("DMR", false, "Slot %u network voice header from %u to %s%u", m_slot->m_slotNo, srcId, flco == FLCO::GROUP ? "TG " : "", dstId);
LogInfoEx(LOG_NET, "DMR Voice Call, slot = %u, srcId = %u, dstId = %u", m_slot->m_slotNo, srcId, dstId);
}
else if (dataType == DataType::VOICE_PI_HEADER) {
if (m_slot->m_netState != RS_NET_AUDIO) {
std::unique_ptr<lc::LC> lc = std::make_unique<lc::LC>(dmrData.getFLCO(), dmrData.getSrcId(), dmrData.getDstId());
uint32_t srcId = lc->getSrcId();
uint32_t dstId = lc->getDstId();
CHECK_NET_AUTHORITATIVE(dstId);
if (checkNetTrafficCollision(dstId))
return;
m_slot->m_netLC = std::move(lc);
m_slot->m_voice->m_lastFrameValid = false;
m_slot->m_netTimeoutTimer.start();
m_slot->m_netTimeout = false;
if (m_slot->s_duplex) {
m_slot->m_txQueue.clear();
m_slot->s_modem->writeDMRAbort(m_slot->m_slotNo);
}
for (uint32_t i = 0U; i < m_slot->s_jitterSlots; i++)
m_slot->addFrame(m_slot->s_idle, true);
// Create a dummy start frame
uint8_t start[DMR_FRAME_LENGTH_BYTES + 2U];
Sync::addDMRDataSync(start + 2U, m_slot->s_duplex);
lc::FullLC fullLC;
fullLC.encode(*m_slot->m_netLC, start + 2U, DataType::VOICE_LC_HEADER);
SlotType slotType;
slotType.setColorCode(m_slot->s_colorCode);
slotType.setDataType(DataType::VOICE_LC_HEADER);
slotType.encode(start + 2U);
start[0U] = modem::TAG_DATA;
start[1U] = 0x00U;
if (m_slot->s_duplex) {
for (uint32_t i = 0U; i < NO_HEADERS_DUPLEX; i++)
m_slot->addFrame(start);
}
else {
for (uint32_t i = 0U; i < NO_HEADERS_SIMPLEX; i++)
m_slot->addFrame(start);
}
m_slot->m_netFrames = 0U;
m_slot->m_netLost = 0U;
m_slot->m_netBits = 1U;
m_slot->m_netErrs = 0U;
m_slot->m_netState = RS_NET_AUDIO;
m_slot->m_netLastDstId = dstId;
m_slot->m_netLastSrcId = srcId;
m_slot->m_netTGHang.start();
m_slot->setShortLC(m_slot->m_slotNo, dstId, m_slot->m_netLC->getFLCO(), Slot::SLCO_ACT_TYPE::VOICE);
::ActivityLog("DMR", false, "Slot %u network late entry from %u to %s%u",
m_slot->m_slotNo, srcId, m_slot->m_netLC->getFLCO() == FLCO::GROUP ? "TG " : "", dstId);
LogInfoEx(LOG_NET, "DMR Voice Call, slot = %u, srcId = %u, dstId = %u", m_slot->m_slotNo, srcId, dstId);
}
lc::FullLC fullLC;
std::unique_ptr<lc::PrivacyLC> lc = fullLC.decodePI(data + 2U);
if (lc == nullptr) {
LogWarning(LOG_NET, "DMR Slot %u, VOICE_PI_HEADER, bad LC received, replacing", m_slot->m_slotNo);
lc = std::make_unique<lc::PrivacyLC>();
lc->setDstId(dmrData.getDstId());
}
m_slot->m_netPrivacyLC = std::move(lc);
// Regenerate the LC data
fullLC.encodePI(*m_slot->m_netPrivacyLC, data + 2U);
// Regenerate the Slot Type
SlotType slotType;
slotType.setColorCode(m_slot->s_colorCode);
slotType.setDataType(DataType::VOICE_PI_HEADER);
slotType.encode(data + 2U);
// Convert the Data Sync to be from the BS or MS as needed
Sync::addDMRDataSync(data + 2U, m_slot->s_duplex);
data[0U] = modem::TAG_DATA;
data[1U] = 0x00U;
m_slot->addFrame(data, true);
if (m_verbose) {
LogInfoEx(LOG_NET, DMR_DT_VOICE_PI_HEADER ", slot = %u, algId = %u, kId = %u, dstId = %u", m_slot->m_slotNo,
m_slot->m_netPrivacyLC->getAlgId(), m_slot->m_netPrivacyLC->getKId(), m_slot->m_netPrivacyLC->getDstId());
uint8_t mi[MI_LENGTH_BYTES];
m_slot->m_netPrivacyLC->getMI(mi);
LogInfoEx(LOG_NET, DMR_DT_VOICE_PI_HEADER ", slot = %u, Enc Sync, MI = %02X %02X %02X %02X",
m_slot->m_slotNo, mi[0U], mi[1U], mi[2U], mi[3U]);
}
}
else if (dataType == DataType::VOICE_SYNC) {
if (m_slot->m_netState == RS_NET_IDLE) {
std::unique_ptr<lc::LC> lc = std::make_unique<lc::LC>(dmrData.getFLCO(), dmrData.getSrcId(), dmrData.getDstId());
uint32_t dstId = lc->getDstId();
uint32_t srcId = lc->getSrcId();
CHECK_NET_AUTHORITATIVE(dstId);
m_slot->m_netLC = std::move(lc);
// The standby LC data
m_netEmbeddedLC.setLC(*m_slot->m_netLC);
m_netEmbeddedData[0U].setLC(*m_slot->m_netLC);
m_netEmbeddedData[1U].setLC(*m_slot->m_netLC);
m_lastFrameValid = false;
m_slot->m_netTimeoutTimer.start();
m_slot->m_netTimeout = false;
if (m_slot->s_duplex) {
m_slot->m_txQueue.clear();
m_slot->s_modem->writeDMRAbort(m_slot->m_slotNo);
}
for (uint32_t i = 0U; i < m_slot->s_jitterSlots; i++)
m_slot->addFrame(m_slot->s_idle, true);
// Create a dummy start frame
uint8_t start[DMR_FRAME_LENGTH_BYTES + 2U];
Sync::addDMRDataSync(start + 2U, m_slot->s_duplex);
lc::FullLC fullLC;
fullLC.encode(*m_slot->m_netLC, start + 2U, DataType::VOICE_LC_HEADER);
SlotType slotType;
slotType.setColorCode(m_slot->s_colorCode);
slotType.setDataType(DataType::VOICE_LC_HEADER);
slotType.encode(start + 2U);
start[0U] = modem::TAG_DATA;
start[1U] = 0x00U;
if (m_slot->s_duplex) {
for (uint32_t i = 0U; i < NO_HEADERS_DUPLEX; i++)
m_slot->addFrame(start);
}
else {
for (uint32_t i = 0U; i < NO_HEADERS_SIMPLEX; i++)
m_slot->addFrame(start);
}
m_slot->m_netFrames = 0U;
m_slot->m_netLost = 0U;
m_slot->m_netBits = 1U;
m_slot->m_netErrs = 0U;
m_netEmbeddedReadN = 0U;
m_netEmbeddedWriteN = 1U;
m_netTalkerId = TalkerID::NONE;
m_slot->m_netState = RS_NET_AUDIO;
m_slot->m_netLastDstId = dstId;
m_slot->m_netLastSrcId = srcId;
m_slot->m_netTGHang.start();
m_slot->setShortLC(m_slot->m_slotNo, dstId, m_slot->m_netLC->getFLCO(), Slot::SLCO_ACT_TYPE::VOICE);
::ActivityLog("DMR", false, "Slot %u network late entry from %u to %s%u",
m_slot->m_slotNo, srcId, m_slot->m_netLC->getFLCO() == FLCO::GROUP ? "TG " : "", dstId);
LogInfoEx(LOG_NET, "DMR Voice Call, slot = %u, srcId = %u, dstId = %u", m_slot->m_slotNo, srcId, dstId);
}
if (m_slot->m_netState == RS_NET_AUDIO) {
uint8_t fid = m_slot->m_netLC->getFID();
bool pf = m_slot->m_netLC->getPF();
if (fid == FID_ETSI || fid == FID_MOT || fid == FID_KENWOOD) {
if (fid == FID_KENWOOD && pf)
m_slot->m_netErrs = 0U; // bryanb: for what we are assuming is Kenwood, these are encrypted frames
// don't bother trying to regenerate or perform FEC
else
m_slot->m_netErrs += m_fec.regenerateDMR(data + 2U);
}
if (m_verbose) {
LogInfoEx(LOG_NET, "DMR Slot %u, VOICE_SYNC audio, sequence no = %u, fid = $%02X, pf = %u, errs = %u/141 (%.1f%%)",
m_slot->m_slotNo, m_netN, fid, pf, m_slot->m_netErrs, float(m_slot->m_netErrs) / 1.41F);
}
if (m_netN >= 5U) {
m_slot->m_netErrs = 0U;
}
m_slot->m_netBits += 141U;
data[0U] = modem::TAG_DATA;
data[1U] = 0x00U;
// Convert the Audio Sync to be from the BS or MS as needed
Sync::addDMRAudioSync(data + 2U, m_slot->s_duplex);
// Initialise the lost packet data
if (m_slot->m_netFrames == 0U) {
::memcpy(m_lastFrame, data, DMR_FRAME_LENGTH_BYTES + 2U);
m_lastFrameValid = true;
m_netN = 5U;
m_slot->m_netLost = 0U;
}
if (!m_slot->m_netTimeout)
m_slot->addFrame(data, true);
m_netEmbeddedReadN = (m_netEmbeddedReadN + 1U) % 2U;
m_netEmbeddedWriteN = (m_netEmbeddedWriteN + 1U) % 2U;
m_netEmbeddedData[m_netEmbeddedWriteN].reset();
m_slot->m_packetTimer.start();
m_slot->m_elapsed.start();
m_slot->m_netFrames++;
// Save details in case we need to infill data
m_netN = dmrData.getN();
}
}
else if (dataType == DataType::VOICE) {
if (m_slot->m_netState != RS_NET_AUDIO)
return;
uint8_t fid = m_slot->m_netLC->getFID();
bool pf = m_slot->m_netLC->getPF();
if (fid == FID_ETSI || fid == FID_MOT || fid == FID_KENWOOD) {
if (fid == FID_KENWOOD && pf)
m_slot->m_netErrs = 0U; // bryanb: for what we are assuming is Kenwood, these are encrypted frames
// don't bother trying to regenerate or perform FEC
else
m_slot->m_netErrs += m_fec.regenerateDMR(data + 2U);
}
if (m_verbose) {
LogInfoEx(LOG_NET, DMR_DT_VOICE ", audio, slot = %u, srcId = %u, dstId = %u, seqNo = %u, fid = $%02X, pf = %u, errs = %u/141 (%.1f%%)", m_slot->m_slotNo, m_slot->m_netLC->getSrcId(), m_slot->m_netLC->getDstId(),
m_netN, fid, pf, m_slot->m_netErrs, float(m_slot->m_netErrs) / 1.41F);
}
m_slot->m_netBits += 141U;
m_slot->m_netTGHang.start();
// Get the LCSS from the EMB
data::EMB emb;
emb.decode(data + 2U);
uint8_t lcss = emb.getLCSS();
// Dump any interesting Embedded Data
bool ret = m_netEmbeddedData[m_netEmbeddedWriteN].addData(data + 2U, lcss);
if (ret) {
uint8_t flco = m_netEmbeddedData[m_netEmbeddedWriteN].getFLCO();
uint8_t data[9U];
m_netEmbeddedData[m_netEmbeddedWriteN].getRawData(data);
char text[80U];
switch (flco) {
case FLCO::GROUP:
case FLCO::PRIVATE:
break;
case FLCO::GPS_INFO:
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, GPS_INFO (Embedded GPS Info)", m_slot->m_slotNo);
Utils::dump(2U, text, data, 9U);
}
logGPSPosition(m_slot->m_netLC->getSrcId(), data);
break;
case FLCO::TALKER_ALIAS_HEADER:
if (!(m_netTalkerId & TalkerID::HEADER)) {
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, TALKER_ALIAS_HEADER (Embedded Talker Alias Header)", m_slot->m_slotNo);
Utils::dump(2U, text, data, 9U);
}
m_netTalkerId |= TalkerID::HEADER;
}
break;
case FLCO::TALKER_ALIAS_BLOCK1:
if (!(m_netTalkerId & TalkerID::BLOCK1)) {
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, TALKER_ALIAS_BLOCK1 (Embedded Talker Alias Block 1)", m_slot->m_slotNo);
Utils::dump(2U, text, data, 9U);
}
m_netTalkerId |= TalkerID::BLOCK1;
}
break;
case FLCO::TALKER_ALIAS_BLOCK2:
if (!(m_netTalkerId & TalkerID::BLOCK2)) {
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, TALKER_ALIAS_BLOCK2 (Embedded Talker Alias Block 2)", m_slot->m_slotNo);
Utils::dump(2U, text, data, 9U);
}
m_netTalkerId |= TalkerID::BLOCK2;
}
break;
case FLCO::TALKER_ALIAS_BLOCK3:
if (!(m_netTalkerId & TalkerID::BLOCK3)) {
if (m_dumpTAData) {
::sprintf(text, "DMR Slot %u, TALKER_ALIAS_BLOCK3 (Embedded Talker Alias Block 3)", m_slot->m_slotNo);
Utils::dump(2U, text, data, 9U);
}
m_netTalkerId |= TalkerID::BLOCK3;
}
break;
default:
::sprintf(text, "DMR Slot %u, Unknown Embedded Data", m_slot->m_slotNo);
Utils::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].valid())
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_slot->s_colorCode);
emb.setLCSS(lcss);
emb.encode(data + 2U);
data[0U] = modem::TAG_DATA;
data[1U] = 0x00U;
// Initialise the lost packet data
if (m_slot->m_netFrames == 0U) {
::memcpy(m_lastFrame, data, DMR_FRAME_LENGTH_BYTES + 2U);
m_lastFrameValid = true;
m_netN = 5U;
m_slot->m_netLost = 0U;
}
if (insertSilence(data, dmrData.getN())) {
if (!m_slot->m_netTimeout)
m_slot->addFrame(data, true);
}
m_slot->m_packetTimer.start();
m_slot->m_elapsed.start();
m_slot->m_netFrames++;
// Save details in case we need to infill data
m_netN = dmrData.getN();
}
else {
// Unhandled data type
LogWarning(LOG_NET, "DMR Slot %u, unhandled network data, type = $%02X", m_slot->m_slotNo, dataType);
}
}
// ---------------------------------------------------------------------------
// Private Class Members
// ---------------------------------------------------------------------------
/* Initializes a new instance of the Voice class. */
Voice::Voice(Slot* slot, network::BaseNetwork* network, bool embeddedLCOnly, bool dumpTAData, bool debug, bool verbose) :
m_slot(slot),
m_lastFrame(nullptr),
m_lastFrameValid(false),
m_rfN(0U),
m_lastRfN(0U),
m_netN(0U),
m_rfEmbeddedLC(),
m_rfEmbeddedData(nullptr),
m_rfEmbeddedReadN(0U),
m_rfEmbeddedWriteN(1U),
m_netEmbeddedLC(),
m_netEmbeddedData(nullptr),
m_netEmbeddedReadN(0U),
m_netEmbeddedWriteN(1U),
m_rfTalkerId(TalkerID::NONE),
m_netTalkerId(TalkerID::NONE),
m_fec(),
m_embeddedLCOnly(embeddedLCOnly),
m_dumpTAData(dumpTAData),
m_verbose(verbose),
m_debug(debug)
{
m_lastFrame = new uint8_t[DMR_FRAME_LENGTH_BYTES + 2U];
m_rfEmbeddedData = new data::EmbeddedData[2U];
m_netEmbeddedData = new data::EmbeddedData[2U];
}
/* Finalizes a instance of the Voice class. */
Voice::~Voice()
{
delete[] m_lastFrame;
delete[] m_rfEmbeddedData;
delete[] m_netEmbeddedData;
}
/* Helper to perform RF traffic collision checking. */
bool Voice::checkRFTrafficCollision(uint32_t dstId)
{
// don't process RF frames if the network isn't in a idle state and the RF destination is the network destination
if (m_slot->m_netState != RS_NET_IDLE && dstId == m_slot->m_netLastDstId) {
LogWarning(LOG_RF, "DMR Slot %u, Traffic collision detect, preempting new RF traffic to existing network traffic!", m_slot->m_slotNo);
m_slot->m_rfState = RS_RF_LISTENING;
return true;
}
if (m_slot->m_enableTSCC && dstId == m_slot->m_netLastDstId) {
if (m_slot->s_affiliations->isNetGranted(dstId)) {
LogWarning(LOG_RF, "DMR Slot %u, Traffic collision detect, preempting new RF traffic to existing granted network traffic (Are we in a voting condition?)", m_slot->m_slotNo);
m_slot->m_rfState = RS_RF_LISTENING;
return true;
}
}
return false;
}
/* Helper to perform network traffic collision checking. */
bool Voice::checkNetTrafficCollision(uint32_t dstId)
{
// don't process network frames if the destination ID's don't match and the RF TG hang timer is running
if (m_slot->m_rfLastDstId != 0U) {
if (m_slot->m_rfLastDstId != dstId && (m_slot->m_rfTGHang.isRunning() && !m_slot->m_rfTGHang.hasExpired())) {
if (m_debug) {
LogDebugEx(LOG_NET, "Voice::checkNetTrafficCollision()", "DMR Slot %u, dropping frames, because dstId does not match and RF TG hang timer is running, rfLastDstId = %u, dstId = %u",
m_slot->m_slotNo, m_slot->m_rfLastDstId, dstId);
}
return true;
}
}
// bryanb: possible fix for a "tail ride" condition where network traffic immediately follows RF traffic *while*
// the RF TG hangtimer is running
if (m_slot->m_rfTGHang.isRunning() && !m_slot->m_rfTGHang.hasExpired()) {
m_slot->m_rfTGHang.stop();
}
// don't process network frames if the RF TG hang timer isn't running, the default net idle talkgroup is set and
// the destination ID doesn't match the default net idle talkgroup
if (m_slot->m_defaultNetIdleTalkgroup != 0U && dstId != 0U && !m_slot->m_rfTGHang.isRunning()) {
if (m_slot->m_defaultNetIdleTalkgroup != dstId) {
if (m_debug) {
LogDebugEx(LOG_NET, "Voice::checkNetTrafficCollision()", "DMR Slot %u, dropping frames, because dstId does not match default net idle talkgroup, defaultNetIdleTalkgroup = %u, dstId = %u",
m_slot->m_slotNo, m_slot->m_defaultNetIdleTalkgroup, dstId);
}
return true;
}
}
if (m_slot->m_netLastDstId != 0U) {
if (m_slot->m_netLastDstId != dstId && (m_slot->m_netTGHang.isRunning() && !m_slot->m_netTGHang.hasExpired())) {
if (m_debug) {
LogDebugEx(LOG_NET, "Voice::checkNetTrafficCollision()", "DMR Slot %u, dropping frames, because dstId does not match and network TG hang timer is running, netLastDstId = %u, dstId = %u",
m_slot->m_slotNo, m_slot->m_netLastDstId, dstId);
}
return true;
}
}
return false;
}
/* */
void Voice::logGPSPosition(const uint32_t srcId, const uint8_t* data)
{
uint32_t errorVal = (data[2U] & 0x0E) >> 1U;
const char* error;
switch (errorVal) {
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;
}
int longitudeVal = ((data[2U] & 0x01U) << 31) | (data[3U] << 23) | (data[4U] << 15) | (data[5U] << 7);
longitudeVal >>= 7;
int latitudeVal = (data[6U] << 24) | (data[7U] << 16) | (data[8U] << 8);
latitudeVal >>= 8;
float longitude = 360.0F / 33554432.0F; // 360/2^25 steps
float latitude = 180.0F / 16777216.0F; // 180/2^24 steps
longitude *= float(longitudeVal);
latitude *= float(latitudeVal);
LogInfoEx(LOG_DMR, "GPS position for %u [lat %f, long %f] (Position error %s)", srcId, latitude, longitude, error);
}
/* Helper to apply a DMR reverse channel command received via in-call control. */
bool Voice::applyReverseChannelCommand(network::NET_ICC::ENUM command, uint8_t* data, dmr::data::EMB& emb)
{
m_slot->m_reverseChannelCommand = network::NET_ICC::NOP;
const uint8_t* payload = nullptr;
switch (command) {
case network::NET_ICC::DMR_RC_CEASE_TRANSMIT:
payload = RC_CEASE_TRANSMIT;
break;
case network::NET_ICC::DMR_RC_REQUEST_CEASE_TRANSMIT:
payload = RC_REQUEST_CEASE_TRANSMIT;
break;
case network::NET_ICC::DMR_RC_MAXIMUM_POWER:
payload = RC_MAX_POWER;
break;
case network::NET_ICC::DMR_RC_MINIMUM_POWER:
payload = RC_MIN_POWER;
break;
case network::NET_ICC::DMR_RC_POWER_INCREASE_ONE_STEP:
payload = RC_POWER_INCREASE;
break;
case network::NET_ICC::DMR_RC_POWER_DECREASE_ONE_STEP:
payload = RC_POWER_DECREASE;
break;
default:
return false;
}
data[16U] = (data[16U] & 0xF0U) | (payload[0U] & 0x0FU);
data[17U] = payload[1U];
data[18U] = payload[2U];
data[19U] = payload[3U];
data[20U] = (data[20U] & 0x0FU) | (payload[4U] & 0xF0U);
// Reverse-channel command data is indicated via PI in EMB.
emb.setPI(true);
return true;
}
/* Helper to insert AMBE null frames for missing audio. */
void Voice::insertNullAudio(uint8_t* data)
{
uint8_t* ambeBuffer = new uint8_t[DMR_AMBE_LENGTH_BYTES];
::memset(ambeBuffer, 0x00U, DMR_AMBE_LENGTH_BYTES);
for (uint32_t i = 0; i < 3U; i++) {
::memcpy(ambeBuffer + (i * 9U), NULL_AMBE, 9U);
}
::memcpy(data, ambeBuffer, 13U);
data[13U] = ambeBuffer[13U] & 0xF0U;
data[19U] = ambeBuffer[13U] & 0x0FU;
::memcpy(data + 20U, ambeBuffer + 14U, 13U);
delete[] ambeBuffer;
}
/* Helper to insert DMR AMBE silence frames. */
bool Voice::insertSilence(const uint8_t* data, uint8_t seqNo)
{
assert(data != nullptr);
// Do not send duplicate
if (seqNo == m_netN)
return false;
// Check to see if we have any spaces to fill?
uint8_t 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;
}
uint32_t count = (seqNo - seq + 6U) % 6U;
insertSilence(count);
::memcpy(m_lastFrame, data, DMR_FRAME_LENGTH_BYTES + 2U);
m_lastFrameValid = true;
return true;
}
/* Helper to insert DMR AMBE silence frames. */
void Voice::insertSilence(uint32_t count)
{
uint8_t 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, SILENCE_DATA, DMR_FRAME_LENGTH_BYTES + 2U);
}
uint8_t n = (m_netN + 1U) % 6U;
uint8_t fid = m_slot->m_netLC->getFID();
data::EMB emb;
emb.setColorCode(m_slot->s_colorCode);
for (uint32_t i = 0U; i < count; i++) {
// only use our silence frame if its AMBE audio data
if (fid == FID_ETSI || fid == FID_MOT || fid == FID_KENWOOD) {
if (i > 0U) {
::memcpy(data, SILENCE_DATA, DMR_FRAME_LENGTH_BYTES + 2U);
m_lastFrameValid = false;
}
}
if (n == 0U) {
Sync::addDMRAudioSync(data + 2U, m_slot->s_duplex);
}
else {
uint8_t lcss = m_netEmbeddedLC.getData(data + 2U, n);
emb.setLCSS(lcss);
emb.encode(data + 2U);
}
m_slot->addFrame(data, true);
m_netN = n;
m_slot->m_netFrames++;
m_slot->m_netLost++;
n = (n + 1U) % 6U;
}
}

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