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Basic jitter buffer for DMR, unfinished work.

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This commit is contained in:
Jonathan Naylor
2017-11-23 11:54:45 +00:00
parent 1d33405a19
commit ce891019d3
7 changed files with 130 additions and 76 deletions
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145
DMRNetwork.cpp
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@@ -31,7 +31,7 @@ const unsigned int BUFFER_LENGTH = 500U;
const unsigned int HOMEBREW_DATA_PACKET_LENGTH = 55U;
CDMRNetwork::CDMRNetwork(const std::string& address, unsigned int port, unsigned int local, unsigned int id, const std::string& password, bool duplex, const char* version, bool debug, bool slot1, bool slot2, HW_TYPE hwType) :
CDMRNetwork::CDMRNetwork(const std::string& address, unsigned int port, unsigned int local, unsigned int id, const std::string& password, bool duplex, const char* version, bool debug, bool slot1, bool slot2, HW_TYPE hwType, unsigned int jitter) :
m_address(),
m_port(port),
m_id(NULL),
@@ -43,6 +43,7 @@ m_socket(local),
m_enabled(false),
m_slot1(slot1),
m_slot2(slot2),
m_jitterBuffers(NULL),
m_hwType(hwType),
m_status(WAITING_CONNECT),
m_retryTimer(1000U, 10U),
@@ -69,17 +70,22 @@ m_beacon(false)
assert(port > 0U);
assert(id > 1000U);
assert(!password.empty());
assert(jitter > 0U);
m_address = CUDPSocket::lookup(address);
m_buffer = new unsigned char[BUFFER_LENGTH];
m_salt = new unsigned char[sizeof(uint32_t)];
m_id = new uint8_t[4U];
m_streamId = new uint32_t[2U];
m_buffer = new unsigned char[BUFFER_LENGTH];
m_salt = new unsigned char[sizeof(uint32_t)];
m_id = new uint8_t[4U];
m_streamId = new uint32_t[2U];
m_jitterBuffers = new CJitterBuffer*[3U];
m_streamId[0U] = 0x00U;
m_streamId[1U] = 0x00U;
m_jitterBuffers[1U] = new CJitterBuffer(60U, DMR_SLOT_TIME, jitter, 256U);
m_jitterBuffers[2U] = new CJitterBuffer(60U, DMR_SLOT_TIME, jitter, 256U);
m_id[0U] = id >> 24;
m_id[1U] = id >> 16;
m_id[2U] = id >> 8;
@@ -91,10 +97,14 @@ m_beacon(false)
CDMRNetwork::~CDMRNetwork()
{
delete[] m_buffer;
delete m_jitterBuffers[1U];
delete m_jitterBuffers[2U];
delete[] m_buffer;
delete[] m_salt;
delete[] m_streamId;
delete[] m_id;
delete[] m_jitterBuffers;
}
void CDMRNetwork::setOptions(const std::string& options)
@@ -138,64 +148,77 @@ bool CDMRNetwork::read(CDMRData& data)
if (m_status != RUNNING)
return false;
if (m_rxData.isEmpty())
return false;
if (!m_rxData.isEmpty()) {
unsigned char length = 0U;
unsigned char length = 0U;
m_rxData.getData(&length, 1U);
m_rxData.getData(m_buffer, length);
m_rxData.getData(&length, 1U);
m_rxData.getData(m_buffer, length);
// Is this a data packet?
if (::memcmp(m_buffer, "DMRD", 4U) == 0) {
unsigned int slotNo = (m_buffer[15U] & 0x80U) == 0x80U ? 2U : 1U;
// Is this a data packet?
if (::memcmp(m_buffer, "DMRD", 4U) != 0)
return false;
bool wanted = true;
unsigned char seqNo = m_buffer[4U];
// DMO mode slot disabling
if (slotNo == 1U && !m_duplex)
wanted = false;
unsigned int srcId = (m_buffer[5U] << 16) | (m_buffer[6U] << 8) | (m_buffer[7U] << 0);
// Individual slot disabling
if (slotNo == 1U && !m_slot1)
wanted = false;
if (slotNo == 2U && !m_slot2)
wanted = false;
unsigned int dstId = (m_buffer[8U] << 16) | (m_buffer[9U] << 8) | (m_buffer[10U] << 0);
unsigned int slotNo = (m_buffer[15U] & 0x80U) == 0x80U ? 2U : 1U;
// DMO mode slot disabling
if (slotNo == 1U && !m_duplex)
return false;
// Individual slot disabling
if (slotNo == 1U && !m_slot1)
return false;
if (slotNo == 2U && !m_slot2)
return false;
FLCO flco = (m_buffer[15U] & 0x40U) == 0x40U ? FLCO_USER_USER : FLCO_GROUP;
data.setSeqNo(seqNo);
data.setSlotNo(slotNo);
data.setSrcId(srcId);
data.setDstId(dstId);
data.setFLCO(flco);
bool dataSync = (m_buffer[15U] & 0x20U) == 0x20U;
bool voiceSync = (m_buffer[15U] & 0x10U) == 0x10U;
if (dataSync) {
unsigned char dataType = m_buffer[15U] & 0x0FU;
data.setData(m_buffer + 20U);
data.setDataType(dataType);
data.setN(0U);
} else if (voiceSync) {
data.setData(m_buffer + 20U);
data.setDataType(DT_VOICE_SYNC);
data.setN(0U);
} else {
unsigned char n = m_buffer[15U] & 0x0FU;
data.setData(m_buffer + 20U);
data.setDataType(DT_VOICE);
data.setN(n);
if (wanted) {
unsigned char seqNo = m_buffer[4U];
m_jitterBuffers[slotNo]->addData(m_buffer, seqNo);
}
}
}
return true;
for (unsigned int slotNo = 1U; slotNo <= 2U; slotNo++) {
JB_STATUS status = m_jitterBuffers[slotNo]->getData(m_buffer);
if (status != JBS_NO_DATA) {
unsigned char seqNo = m_buffer[4U];
unsigned int srcId = (m_buffer[5U] << 16) | (m_buffer[6U] << 8) | (m_buffer[7U] << 0);
unsigned int dstId = (m_buffer[8U] << 16) | (m_buffer[9U] << 8) | (m_buffer[10U] << 0);
FLCO flco = (m_buffer[15U] & 0x40U) == 0x40U ? FLCO_USER_USER : FLCO_GROUP;
data.setSeqNo(seqNo);
data.setSlotNo(slotNo);
data.setSrcId(srcId);
data.setDstId(dstId);
data.setFLCO(flco);
data.setMissing(status == JBS_MISSING);
bool dataSync = (m_buffer[15U] & 0x20U) == 0x20U;
bool voiceSync = (m_buffer[15U] & 0x10U) == 0x10U;
if (dataSync) {
unsigned char dataType = m_buffer[15U] & 0x0FU;
data.setData(m_buffer + 20U);
data.setDataType(dataType);
data.setN(0U);
} else if (voiceSync) {
data.setData(m_buffer + 20U);
data.setDataType(DT_VOICE_SYNC);
data.setN(0U);
} else {
unsigned char n = m_buffer[15U] & 0x0FU;
data.setData(m_buffer + 20U);
data.setDataType(DT_VOICE);
data.setN(n);
}
return true;
}
}
return false;
}
bool CDMRNetwork::write(const CDMRData& data)
@@ -339,6 +362,9 @@ void CDMRNetwork::close()
void CDMRNetwork::clock(unsigned int ms)
{
m_jitterBuffers[1U]->clock(ms);
m_jitterBuffers[2U]->clock(ms);
if (m_status == WAITING_CONNECT) {
m_retryTimer.clock(ms);
if (m_retryTimer.isRunning() && m_retryTimer.hasExpired()) {
@@ -480,6 +506,13 @@ void CDMRNetwork::clock(unsigned int ms)
}
}
void CDMRNetwork::reset(unsigned int slotNo)
{
assert(slotNo == 1U || slotNo == 2U);
m_jitterBuffers[slotNo]->reset();
}
bool CDMRNetwork::writeLogin()
{
unsigned char buffer[8U];