def generate_ipsc_voice_burst(self, _rx_slot, _burst_type, _ambe):
if _burst_type == BURST_DATA_TYPE['SLOT1_VOICE'] and _rx_slot.slot == 2:
_burst_type = BURST_DATA_TYPE['SLOT2_VOICE']
length = 20
control = 0x00
controlData = ''
if _rx_slot.vf == 0:
control = VC_SYNC
elif _rx_slot.vf == 1 or _rx_slot.vf == 2 or _rx_slot.vf == 3 or _rx_slot.vf == 5:
control = VC_EMB | VC_EMBEDDED_LC_BITS
length += 5
emb = bptc.encode_emblc(self.emb_lc)
if _rx_slot.vf == 1:
controlData = emb[1].tobytes()
elif _rx_slot.vf == 2:
controlData = emb[2].tobytes()
elif _rx_slot.vf == 3:
controlData = emb[3].tobytes()
elif _rx_slot.vf == 5:
controlData = struct.pack('>I', 0)
controlData += '\x00'
elif _rx_slot.vf == 4:
control = VC_EMB | VC_EMBEDDED_LC_BITS | VC_EMBEDDED_LC
length += 14
emb = bptc.encode_emblc(self.emb_lc)
controlData = emb[4].tobytes()
controlData += self.emb_lc[1:]
controlData += '\x00'
burst = _burst_type + struct.pack('B', length) + struct.pack(
'B', control) + _ambe + controlData
return burst
def __encode_voice_header( self, _rx_slot, _sync, _dtype ):
_src_id = _rx_slot.rf_src
_dst_id = _rx_slot.dst_id
_cc = _rx_slot.cc
# create lc
lc = '\x00\x00\x00' + _dst_id + _src_id # PF + Reserved + FLCO + FID + Service Options + Group Address + Source Address
# encode lc into info
full_lc_encode = bptc.encode_header_lc(lc)
_rx_slot.emblc = bptc.encode_emblc(lc) # save off the emb lc for voice frames B-E
_rx_slot.emblc[5] = bitarray(32) # NULL message (F)
# create slot_type
slot_type = chr((_cc << 4) | (_dtype & 0x0f)) # data type is Header or Term
# generate FEC for slot type
slot_with_fec = BitArray(uint=golay.encode_2087(slot_type), length=20)
# construct final frame - info[0:98] + slot_type[0:10] + DMR_DATA_SYNC_MS + slot_type[10:20] + info[98:196]
frame_bits = full_lc_encode[0:98] + slot_with_fec[0:10] + decode.to_bits(_sync) + slot_with_fec[10:20] + full_lc_encode[98:196]
return decode.to_bytes(frame_bits)
def encode_lc(self, _rx_slot, _dtype):
_src_id = _rx_slot.src_id
_dst_id = _rx_slot.dst_id
_cc = _rx_slot.cc
_fid = FID_ETSI
if (_rx_slot.secure == True):
_fid = FID_DMRA
_flco = LC_GROUP_VOICE
if (_rx_slot.group == False):
_flco = LC_PRIVATE_VOICE
# create lc
lcHeader = _flco + _fid + '\x00' + _dst_id + _src_id # PF + Reserved + FLCO + FID + Service Options + Destination Address + Source Address
_rx_slot.emblc = bptc.encode_emblc(
lcHeader) # save off the emb lc for voice frames B-E
_rx_slot.emblc[5] = bitarray(32) # NULL message (F)
return lc.encode_lc_header(lcHeader, _cc, _dtype, MS_DATA_SYNC)
def dmrd_received(self, _peer_id, _rf_src, _dst_id, _seq, _slot,
_call_type, _frame_type, _dtype_vseq, _stream_id, _data):
pkt_time = time()
dmrpkt = _data[20:53]
_bits = int_id(_data[15])
if _call_type == 'group':
# Check for ACL match, and return if the subscriber is not allowed
if allow_sub(_rf_src) == False:
self._logger.warning(
'(%s) Group Voice Packet ***REJECTED BY ACL*** From: %s, HBP Peer %s, Destination TGID %s',
self._system, int_id(_rf_src), int_id(_peer_id),
int_id(_dst_id))
return
# Is this a new call stream?
if (_stream_id != self.STATUS[_slot]['RX_STREAM_ID']):
if (self.STATUS[_slot]['RX_TYPE'] != hb_const.HBPF_SLT_VTERM
) and (pkt_time <
(self.STATUS[_slot]['RX_TIME'] + hb_const.STREAM_TO)
) and (_rf_src != self.STATUS[_slot]['RX_RFS']):
self._logger.warning(
'(%s) Packet received with STREAM ID: %s <FROM> SUB: %s PEER: %s <TO> TGID %s, SLOT %s collided with existing call',
self._system, int_id(_stream_id), int_id(_rf_src),
int_id(_peer_id), int_id(_dst_id), _slot)
return
# This is a new call stream
self.STATUS['RX_START'] = pkt_time
self._logger.info('(%s) *CALL START* STREAM ID: %s SUB: %s (%s) PEER: %s (%s) TGID %s (%s), TS %s', \
self._system, int_id(_stream_id), get_alias(_rf_src, subscriber_ids), int_id(_rf_src), get_alias(_peer_id, peer_ids), int_id(_peer_id), get_alias(_dst_id, talkgroup_ids), int_id(_dst_id), _slot)
# If we can, use the LC from the voice header as to keep all options intact
if _frame_type == hb_const.HBPF_DATA_SYNC and _dtype_vseq == hb_const.HBPF_SLT_VHEAD:
decoded = decode.voice_head_term(dmrpkt)
self.STATUS[_slot]['RX_LC'] = decoded['LC']
# If we don't have a voice header then don't wait to decode it from the Embedded LC
# just make a new one from the HBP header. This is good enough, and it saves lots of time
else:
self.STATUS[_slot][
'RX_LC'] = const.LC_OPT + _dst_id + _rf_src
for rule in RULES[self._system]['GROUP_VOICE']:
_target = rule['DST_NET']
_target_status = systems[_target].STATUS
if (rule['SRC_GROUP'] == _dst_id and rule['SRC_TS'] == _slot
and rule['ACTIVE'] == True):
# BEGIN CONTENTION HANDLING
#
# The rules for each of the 4 "ifs" below are listed here for readability. The Frame To Send is:
# From a different group than last RX from this HBSystem, but it has been less than Group Hangtime
# From a different group than last TX to this HBSystem, but it has been less than Group Hangtime
# From the same group as the last RX from this HBSystem, but from a different subscriber, and it has been less than stream timeout
# From the same group as the last TX to this HBSystem, but from a different subscriber, and it has been less than stream timeout
# The "continue" at the end of each means the next iteration of the for loop that tests for matching rules
#
if ((rule['DST_GROUP'] !=
_target_status[rule['DST_TS']]['RX_TGID']) and
((pkt_time - _target_status[rule['DST_TS']]['RX_TIME'])
< RULES[_target]['GROUP_HANGTIME'])):
if _frame_type == hb_const.HBPF_DATA_SYNC and _dtype_vseq == hb_const.HBPF_SLT_VHEAD:
self._logger.info(
'(%s) Call not routed to TGID%s, target active or in group hangtime: HBSystem: %s, TS: %s, TGID: %s',
self._system, int_id(rule['DST_GROUP']),
_target, rule['DST_TS'],
int_id(
_target_status[rule['DST_TS']]['RX_TGID']))
continue
if ((rule['DST_GROUP'] !=
_target_status[rule['DST_TS']]['TX_TGID']) and
((pkt_time - _target_status[rule['DST_TS']]['TX_TIME'])
< RULES[_target]['GROUP_HANGTIME'])):
if _frame_type == hb_const.HBPF_DATA_SYNC and _dtype_vseq == hb_const.HBPF_SLT_VHEAD:
self._logger.info(
'(%s) Call not routed to TGID%s, target in group hangtime: HBSystem: %s, TS: %s, TGID: %s',
self._system, int_id(rule['DST_GROUP']),
_target, rule['DST_TS'],
int_id(
_target_status[rule['DST_TS']]['TX_TGID']))
continue
if (rule['DST_GROUP']
== _target_status[rule['DST_TS']]['RX_TGID']) and (
(pkt_time -
_target_status[rule['DST_TS']]['RX_TIME']) <
hb_const.STREAM_TO):
if _frame_type == hb_const.HBPF_DATA_SYNC and _dtype_vseq == hb_const.HBPF_SLT_VHEAD:
self._logger.info(
'(%s) Call not routed to TGID%s, matching call already active on target: HBSystem: %s, TS: %s, TGID: %s',
self._system, int_id(rule['DST_GROUP']),
_target, rule['DST_TS'],
int_id(
_target_status[rule['DST_TS']]['RX_TGID']))
continue
if (rule['DST_GROUP']
== _target_status[rule['DST_TS']]['TX_TGID']) and (
_rf_src !=
_target_status[rule['DST_TS']]['TX_RFS']) and (
(pkt_time -
_target_status[rule['DST_TS']]['TX_TIME'])
< hb_const.STREAM_TO):
if _frame_type == hb_const.HBPF_DATA_SYNC and _dtype_vseq == hb_const.HBPF_SLT_VHEAD:
self._logger.info(
'(%s) Call not routed for subscriber %s, call route in progress on target: HBSystem: %s, TS: %s, TGID: %s, SUB: %s',
self._system, int_id(_rf_src), _target,
rule['DST_TS'],
int_id(
_target_status[rule['DST_TS']]['TX_TGID']),
_target_status[rule['DST_TS']]['TX_RFS'])
continue
# Set values for the contention handler to test next time there is a frame to forward
_target_status[rule['DST_TS']]['TX_TIME'] = pkt_time
if (_stream_id != self.STATUS[_slot]['RX_STREAM_ID']) or (
_target_status[rule['DST_TS']]['TX_RFS'] != _rf_src
) or (_target_status[rule['DST_TS']]['TX_TGID'] !=
rule['DST_GROUP']):
# Record the DST TGID and Stream ID
_target_status[
rule['DST_TS']]['TX_TGID'] = rule['DST_GROUP']
_target_status[
rule['DST_TS']]['TX_STREAM_ID'] = _stream_id
_target_status[rule['DST_TS']]['TX_RFS'] = _rf_src
# Generate LCs (full and EMB) for the TX stream
# if _dst_id != rule['DST_GROUP']:
dst_lc = self.STATUS[_slot]['RX_LC'][0:3] + rule[
'DST_GROUP'] + _rf_src
_target_status[rule['DST_TS']][
'TX_H_LC'] = bptc.encode_header_lc(dst_lc)
_target_status[rule['DST_TS']][
'TX_T_LC'] = bptc.encode_terminator_lc(dst_lc)
_target_status[rule['DST_TS']][
'TX_EMB_LC'] = bptc.encode_emblc(dst_lc)
self._logger.debug(
'(%s) Packet DST TGID (%s) does not match SRC TGID(%s) - Generating FULL and EMB LCs',
self._system, int_id(rule['DST_GROUP']),
int_id(_dst_id))
self._logger.info(
'(%s) Call routed to: System: %s TS: %s, TGID: %s',
self._system, _target, rule['DST_TS'],
int_id(rule['DST_GROUP']))
# Handle any necessary re-writes for the destination
if rule['SRC_TS'] != rule['DST_TS']:
_tmp_bits = _bits ^ 1 << 7
else:
_tmp_bits = _bits
# Assemble transmit HBP packet header
_tmp_data = _data[:8] + rule['DST_GROUP'] + _data[
11:15] + chr(_tmp_bits) + _data[16:20]
# MUST TEST FOR NEW STREAM AND IF SO, RE-WRITE THE LC FOR THE TARGET
# MUST RE-WRITE DESTINATION TGID IF DIFFERENT
# if _dst_id != rule['DST_GROUP']:
dmrbits = bitarray(endian='big')
dmrbits.frombytes(dmrpkt)
# Create a voice header packet (FULL LC)
if _frame_type == hb_const.HBPF_DATA_SYNC and _dtype_vseq == hb_const.HBPF_SLT_VHEAD:
dmrbits = _target_status[rule['DST_TS']]['TX_H_LC'][
0:98] + dmrbits[98:166] + _target_status[
rule['DST_TS']]['TX_H_LC'][98:197]
# Create a voice terminator packet (FULL LC)
elif _frame_type == hb_const.HBPF_DATA_SYNC and _dtype_vseq == hb_const.HBPF_SLT_VTERM:
dmrbits = _target_status[rule['DST_TS']]['TX_T_LC'][
0:98] + dmrbits[98:166] + _target_status[
rule['DST_TS']]['TX_T_LC'][98:197]
# Create a Burst B-E packet (Embedded LC)
elif _dtype_vseq in [1, 2, 3, 4]:
dmrbits = dmrbits[0:116] + _target_status[
rule['DST_TS']]['TX_EMB_LC'][
_dtype_vseq] + dmrbits[148:264]
dmrpkt = dmrbits.tobytes()
_tmp_data = _tmp_data + dmrpkt + _data[53:55]
# Transmit the packet to the destination system
systems[_target].send_system(_tmp_data)
self._logger.debug(
'(%s) Packet routed by rule: %s to %s system: %s',
self._system, rule['NAME'],
self._CONFIG['SYSTEMS'][_target]['MODE'], _target)
# Final actions - Is this a voice terminator?
if (_frame_type == hb_const.HBPF_DATA_SYNC
) and (_dtype_vseq == hb_const.HBPF_SLT_VTERM) and (
self.STATUS[_slot]['RX_TYPE'] != hb_const.HBPF_SLT_VTERM):
call_duration = pkt_time - self.STATUS['RX_START']
self._logger.info('(%s) *CALL END* STREAM ID: %s SUB: %s (%s) PEER: %s (%s) TGID %s (%s), TS %s, Duration: %s', \
self._system, int_id(_stream_id), get_alias(_rf_src, subscriber_ids), int_id(_rf_src), get_alias(_peer_id, peer_ids), int_id(_peer_id), get_alias(_dst_id, talkgroup_ids), int_id(_dst_id), _slot, call_duration)
#
# Begin in-band signalling for call end. This has nothign to do with routing traffic directly.
#
# Iterate the rules dictionary
for rule in RULES[self._system]['GROUP_VOICE']:
_target = rule['DST_NET']
# TGID matches a rule source, reset its timer
if _slot == rule['SRC_TS'] and _dst_id == rule[
'SRC_GROUP'] and ((rule['TO_TYPE'] == 'ON' and
(rule['ACTIVE'] == True)) or
(rule['TO_TYPE'] == 'OFF'
and rule['ACTIVE'] == False)):
rule['TIMER'] = pkt_time + rule['TIMEOUT']
self._logger.info(
'(%s) Source group transmission match for rule \"%s\". Reset timeout to %s',
self._system, rule['NAME'], rule['TIMER'])
# Scan for reciprocal rules and reset their timers as well.
for target_rule in RULES[_target]['GROUP_VOICE']:
if target_rule['NAME'] == rule['NAME']:
target_rule['TIMER'] = pkt_time + target_rule[
'TIMEOUT']
self._logger.info(
'(%s) Reciprocal group transmission match for rule \"%s\" on IPSC \"%s\". Reset timeout to %s',
self._system, target_rule['NAME'], _target,
rule['TIMER'])
# TGID matches an ACTIVATION trigger
if _dst_id in rule['ON']:
# Set the matching rule as ACTIVE
rule['ACTIVE'] = True
rule['TIMER'] = pkt_time + rule['TIMEOUT']
self._logger.info(
'(%s) Primary routing Rule \"%s\" changed to state: %s',
self._system, rule['NAME'], rule['ACTIVE'])
# Set reciprocal rules for other IPSCs as ACTIVE
for target_rule in RULES[_target]['GROUP_VOICE']:
if target_rule['NAME'] == rule['NAME']:
target_rule['ACTIVE'] = True
target_rule['TIMER'] = pkt_time + target_rule[
'TIMEOUT']
self._logger.info(
'(%s) Reciprocal routing Rule \"%s\" in IPSC \"%s\" changed to state: %s',
self._system, target_rule['NAME'], _target,
rule['ACTIVE'])
# TGID matches an DE-ACTIVATION trigger
if _dst_id in rule['OFF']:
# Set the matching rule as ACTIVE
rule['ACTIVE'] = False
self._logger.info(
'(%s) Routing Rule \"%s\" changed to state: %s',
self._system, rule['NAME'], rule['ACTIVE'])
# Set reciprocal rules for other IPSCs as ACTIVE
_target = rule['DST_NET']
for target_rule in RULES[_target]['GROUP_VOICE']:
if target_rule['NAME'] == rule['NAME']:
target_rule['ACTIVE'] = False
self._logger.info(
'(%s) Reciprocal routing Rule \"%s\" in IPSC \"%s\" changed to state: %s',
self._system, target_rule['NAME'], _target,
rule['ACTIVE'])
#
# END IN-BAND SIGNALLING
#
# Mark status variables for use later
self.STATUS[_slot]['RX_RFS'] = _rf_src
self.STATUS[_slot]['RX_TYPE'] = _dtype_vseq
self.STATUS[_slot]['RX_TGID'] = _dst_id
self.STATUS[_slot]['RX_TIME'] = pkt_time
self.STATUS[_slot]['RX_STREAM_ID'] = _stream_id
def dmrd_received(self, _peer_id, _rf_src, _dst_id, _seq, _slot, _call_type, _frame_type, _dtype_vseq, _stream_id, _data):
pkt_time = time()
dmrpkt = _data[20:53]
_bits = int_id(_data[15])
if _call_type == 'group':
# Check for ACL match, and return if the subscriber is not allowed
if allow_sub(_rf_src) == False:
self._logger.warning('(%s) Group Voice Packet ***REJECTED BY ACL*** From: %s, HBP Peer %s, Destination TGID %s', self._system, int_id(_rf_src), int_id(_peer_id), int_id(_dst_id))
return
# Is this a new call stream?
if (_stream_id != self.STATUS[_slot]['RX_STREAM_ID']):
if (self.STATUS[_slot]['RX_TYPE'] != hb_const.HBPF_SLT_VTERM) and (pkt_time < (self.STATUS[_slot]['RX_TIME'] + hb_const.STREAM_TO)) and (_rf_src != self.STATUS[_slot]['RX_RFS']):
self._logger.warning('(%s) Packet received with STREAM ID: %s <FROM> SUB: %s PEER: %s <TO> TGID %s, SLOT %s collided with existing call', self._system, int_id(_stream_id), int_id(_rf_src), int_id(_peer_id), int_id(_dst_id), _slot)
return
# This is a new call stream
self.STATUS['RX_START'] = pkt_time
self._logger.info('(%s) *CALL START* STREAM ID: %s SUB: %s (%s) PEER: %s (%s) TGID %s (%s), TS %s', \
self._system, int_id(_stream_id), get_alias(_rf_src, subscriber_ids), int_id(_rf_src), get_alias(_peer_id, peer_ids), int_id(_peer_id), get_alias(_dst_id, talkgroup_ids), int_id(_dst_id), _slot)
# If we can, use the LC from the voice header as to keep all options intact
if _frame_type == hb_const.HBPF_DATA_SYNC and _dtype_vseq == hb_const.HBPF_SLT_VHEAD:
decoded = decode.voice_head_term(dmrpkt)
self.STATUS[_slot]['RX_LC'] = decoded['LC']
# If we don't have a voice header then don't wait to decode it from the Embedded LC
# just make a new one from the HBP header. This is good enough, and it saves lots of time
else:
self.STATUS[_slot]['RX_LC'] = const.LC_OPT + _dst_id + _rf_src
for rule in RULES[self._system]['GROUP_VOICE']:
_target = rule['DST_NET']
_target_status = systems[_target].STATUS
if (rule['SRC_GROUP'] == _dst_id and rule['SRC_TS'] == _slot and rule['ACTIVE'] == True):
# BEGIN CONTENTION HANDLING
#
# The rules for each of the 4 "ifs" below are listed here for readability. The Frame To Send is:
# From a different group than last RX from this HBSystem, but it has been less than Group Hangtime
# From a different group than last TX to this HBSystem, but it has been less than Group Hangtime
# From the same group as the last RX from this HBSystem, but from a different subscriber, and it has been less than stream timeout
# From the same group as the last TX to this HBSystem, but from a different subscriber, and it has been less than stream timeout
# The "continue" at the end of each means the next iteration of the for loop that tests for matching rules
#
if ((rule['DST_GROUP'] != _target_status[rule['DST_TS']]['RX_TGID']) and ((pkt_time - _target_status[rule['DST_TS']]['RX_TIME']) < RULES[_target]['GROUP_HANGTIME'])):
if _frame_type == hb_const.HBPF_DATA_SYNC and _dtype_vseq == hb_const.HBPF_SLT_VHEAD:
self._logger.info('(%s) Call not routed to TGID%s, target active or in group hangtime: HBSystem: %s, TS: %s, TGID: %s', self._system, int_id(rule['DST_GROUP']), _target, rule['DST_TS'], int_id(_target_status[rule['DST_TS']]['RX_TGID']))
continue
if ((rule['DST_GROUP'] != _target_status[rule['DST_TS']]['TX_TGID']) and ((pkt_time - _target_status[rule['DST_TS']]['TX_TIME']) < RULES[_target]['GROUP_HANGTIME'])):
if _frame_type == hb_const.HBPF_DATA_SYNC and _dtype_vseq == hb_const.HBPF_SLT_VHEAD:
self._logger.info('(%s) Call not routed to TGID%s, target in group hangtime: HBSystem: %s, TS: %s, TGID: %s', self._system, int_id(rule['DST_GROUP']), _target, rule['DST_TS'], int_id(_target_status[rule['DST_TS']]['TX_TGID']))
continue
if (rule['DST_GROUP'] == _target_status[rule['DST_TS']]['RX_TGID']) and ((pkt_time - _target_status[rule['DST_TS']]['RX_TIME']) < hb_const.STREAM_TO):
if _frame_type == hb_const.HBPF_DATA_SYNC and _dtype_vseq == hb_const.HBPF_SLT_VHEAD:
self._logger.info('(%s) Call not routed to TGID%s, matching call already active on target: HBSystem: %s, TS: %s, TGID: %s', self._system, int_id(rule['DST_GROUP']), _target, rule['DST_TS'], int_id(_target_status[rule['DST_TS']]['RX_TGID']))
continue
if (rule['DST_GROUP'] == _target_status[rule['DST_TS']]['TX_TGID']) and (_rf_src != _target_status[rule['DST_TS']]['TX_RFS']) and ((pkt_time - _target_status[rule['DST_TS']]['TX_TIME']) < hb_const.STREAM_TO):
if _frame_type == hb_const.HBPF_DATA_SYNC and _dtype_vseq == hb_const.HBPF_SLT_VHEAD:
self._logger.info('(%s) Call not routed for subscriber %s, call route in progress on target: HBSystem: %s, TS: %s, TGID: %s, SUB: %s', self._system, int_id(_rf_src), _target, rule['DST_TS'], int_id(_target_status[rule['DST_TS']]['TX_TGID']), _target_status[rule['DST_TS']]['TX_RFS'])
continue
# Set values for the contention handler to test next time there is a frame to forward
_target_status[rule['DST_TS']]['TX_TIME'] = pkt_time
if (_stream_id != self.STATUS[_slot]['RX_STREAM_ID']) or (_target_status[rule['DST_TS']]['TX_RFS'] != _rf_src) or (_target_status[rule['DST_TS']]['TX_TGID'] != rule['DST_GROUP']):
# Record the DST TGID and Stream ID
_target_status[rule['DST_TS']]['TX_TGID'] = rule['DST_GROUP']
_target_status[rule['DST_TS']]['TX_STREAM_ID'] = _stream_id
_target_status[rule['DST_TS']]['TX_RFS'] = _rf_src
# Generate LCs (full and EMB) for the TX stream
# if _dst_id != rule['DST_GROUP']:
dst_lc = self.STATUS[_slot]['RX_LC'][0:3] + rule['DST_GROUP'] + _rf_src
_target_status[rule['DST_TS']]['TX_H_LC'] = bptc.encode_header_lc(dst_lc)
_target_status[rule['DST_TS']]['TX_T_LC'] = bptc.encode_terminator_lc(dst_lc)
_target_status[rule['DST_TS']]['TX_EMB_LC'] = bptc.encode_emblc(dst_lc)
self._logger.debug('(%s) Packet DST TGID (%s) does not match SRC TGID(%s) - Generating FULL and EMB LCs', self._system, int_id(rule['DST_GROUP']), int_id(_dst_id))
self._logger.info('(%s) Call routed to: System: %s TS: %s, TGID: %s', self._system, _target, rule['DST_TS'], int_id(rule['DST_GROUP']))
# Handle any necessary re-writes for the destination
if rule['SRC_TS'] != rule['DST_TS']:
_tmp_bits = _bits ^ 1 << 7
else:
_tmp_bits = _bits
# Assemble transmit HBP packet header
_tmp_data = _data[:8] + rule['DST_GROUP'] + _data[11:15] + chr(_tmp_bits) + _data[16:20]
# MUST TEST FOR NEW STREAM AND IF SO, RE-WRITE THE LC FOR THE TARGET
# MUST RE-WRITE DESTINATION TGID IF DIFFERENT
# if _dst_id != rule['DST_GROUP']:
dmrbits = bitarray(endian='big')
dmrbits.frombytes(dmrpkt)
# Create a voice header packet (FULL LC)
if _frame_type == hb_const.HBPF_DATA_SYNC and _dtype_vseq == hb_const.HBPF_SLT_VHEAD:
dmrbits = _target_status[rule['DST_TS']]['TX_H_LC'][0:98] + dmrbits[98:166] + _target_status[rule['DST_TS']]['TX_H_LC'][98:197]
# Create a voice terminator packet (FULL LC)
elif _frame_type == hb_const.HBPF_DATA_SYNC and _dtype_vseq == hb_const.HBPF_SLT_VTERM:
dmrbits = _target_status[rule['DST_TS']]['TX_T_LC'][0:98] + dmrbits[98:166] + _target_status[rule['DST_TS']]['TX_T_LC'][98:197]
# Create a Burst B-E packet (Embedded LC)
elif _dtype_vseq in [1,2,3,4]:
dmrbits = dmrbits[0:116] + _target_status[rule['DST_TS']]['TX_EMB_LC'][_dtype_vseq] + dmrbits[148:264]
dmrpkt = dmrbits.tobytes()
_tmp_data = _tmp_data + dmrpkt + _data[53:55]
# Transmit the packet to the destination system
systems[_target].send_system(_tmp_data)
self._logger.debug('(%s) Packet routed by rule: %s to %s system: %s', self._system, rule['NAME'], self._CONFIG['SYSTEMS'][_target]['MODE'], _target)
# Final actions - Is this a voice terminator?
if (_frame_type == hb_const.HBPF_DATA_SYNC) and (_dtype_vseq == hb_const.HBPF_SLT_VTERM) and (self.STATUS[_slot]['RX_TYPE'] != hb_const.HBPF_SLT_VTERM):
call_duration = pkt_time - self.STATUS['RX_START']
self._logger.info('(%s) *CALL END* STREAM ID: %s SUB: %s (%s) PEER: %s (%s) TGID %s (%s), TS %s, Duration: %s', \
self._system, int_id(_stream_id), get_alias(_rf_src, subscriber_ids), int_id(_rf_src), get_alias(_peer_id, peer_ids), int_id(_peer_id), get_alias(_dst_id, talkgroup_ids), int_id(_dst_id), _slot, call_duration)
#
# Begin in-band signalling for call end. This has nothign to do with routing traffic directly.
#
# Iterate the rules dictionary
for rule in RULES[self._system]['GROUP_VOICE']:
_target = rule['DST_NET']
# TGID matches a rule source, reset its timer
if _slot == rule['SRC_TS'] and _dst_id == rule['SRC_GROUP'] and ((rule['TO_TYPE'] == 'ON' and (rule['ACTIVE'] == True)) or (rule['TO_TYPE'] == 'OFF' and rule['ACTIVE'] == False)):
rule['TIMER'] = pkt_time + rule['TIMEOUT']
self._logger.info('(%s) Source group transmission match for rule \"%s\". Reset timeout to %s', self._system, rule['NAME'], rule['TIMER'])
# Scan for reciprocal rules and reset their timers as well.
for target_rule in RULES[_target]['GROUP_VOICE']:
if target_rule['NAME'] == rule['NAME']:
target_rule['TIMER'] = pkt_time + target_rule['TIMEOUT']
self._logger.info('(%s) Reciprocal group transmission match for rule \"%s\" on IPSC \"%s\". Reset timeout to %s', self._system, target_rule['NAME'], _target, rule['TIMER'])
# TGID matches an ACTIVATION trigger
if _dst_id in rule['ON']:
# Set the matching rule as ACTIVE
rule['ACTIVE'] = True
rule['TIMER'] = pkt_time + rule['TIMEOUT']
self._logger.info('(%s) Primary routing Rule \"%s\" changed to state: %s', self._system, rule['NAME'], rule['ACTIVE'])
# Set reciprocal rules for other IPSCs as ACTIVE
for target_rule in RULES[_target]['GROUP_VOICE']:
if target_rule['NAME'] == rule['NAME']:
target_rule['ACTIVE'] = True
target_rule['TIMER'] = pkt_time + target_rule['TIMEOUT']
self._logger.info('(%s) Reciprocal routing Rule \"%s\" in IPSC \"%s\" changed to state: %s', self._system, target_rule['NAME'], _target, rule['ACTIVE'])
# TGID matches an DE-ACTIVATION trigger
if _dst_id in rule['OFF']:
# Set the matching rule as ACTIVE
rule['ACTIVE'] = False
self._logger.info('(%s) Routing Rule \"%s\" changed to state: %s', self._system, rule['NAME'], rule['ACTIVE'])
# Set reciprocal rules for other IPSCs as ACTIVE
_target = rule['DST_NET']
for target_rule in RULES[_target]['GROUP_VOICE']:
if target_rule['NAME'] == rule['NAME']:
target_rule['ACTIVE'] = False
self._logger.info('(%s) Reciprocal routing Rule \"%s\" in IPSC \"%s\" changed to state: %s', self._system, target_rule['NAME'], _target, rule['ACTIVE'])
#
# END IN-BAND SIGNALLING
#
# Mark status variables for use later
self.STATUS[_slot]['RX_RFS'] = _rf_src
self.STATUS[_slot]['RX_TYPE'] = _dtype_vseq
self.STATUS[_slot]['RX_TGID'] = _dst_id
self.STATUS[_slot]['RX_TIME'] = pkt_time
self.STATUS[_slot]['RX_STREAM_ID'] = _stream_id