def set_freq(self, freq):
if self.frequency == freq:
return True
old_freq = self.frequency
self.frequency = freq
if not self.demod.set_relative_frequency(
self.device.offset + self.device.frequency +
self.device.fractional_corr -
freq): # First attempt relative tune
if self.device.tunable: # then hard tune if allowed
self.device.frequency = self.frequency
self.device.src.set_center_freq(self.frequency +
self.device.offset)
self.device.fractional_corr = int(
(int(round(self.device.ppm)) - self.device.ppm) *
(self.device.frequency /
1e6)) # Calc frac ppm using new freq
self.demod.set_relative_frequency(self.device.offset +
self.device.frequency +
self.device.fractional_corr -
freq)
if self.verbosity >= 9:
sys.stderr.write(
"%s [%d] Hardware tune: dev_freq(%d), dev_off(%d), dev_frac(%d), tune_freq(%d)\n"
% (log_ts.get(), self.msgq_id, self.device.frequency,
self.device.offset, self.device.fractional_corr,
(self.device.frequency -
(self.device.offset + self.device.frequency +
self.device.fractional_corr - freq))))
else: # otherwise fail and reset to prev freq
self.demod.set_relative_frequency(self.device.offset +
self.device.frequency +
self.device.fractional_corr -
old_freq)
self.frequency = old_freq
if self.verbosity:
sys.stderr.write(
"%s [%d] Unable to tune %s to frequency %f\n" %
(log_ts.get(), self.msgq_id, self.name, (freq / 1e6)))
return False
else:
if self.verbosity >= 9:
sys.stderr.write(
"%s [%d] Relative tune: dev_freq(%d), dev_off(%d), dev_frac(%d), tune_freq(%d)\n"
% (log_ts.get(), self.msgq_id, self.device.frequency,
self.device.offset, self.device.fractional_corr,
(self.device.frequency -
(self.device.offset + self.device.frequency +
self.device.fractional_corr - freq))))
if 'fft' in self.sinks:
self.sinks['fft'][0].set_center_freq(self.device.frequency)
self.sinks['fft'][0].set_relative_freq(self.device.frequency -
freq)
if self.verbosity >= 9:
sys.stderr.write("%s [%d] Tuning to frequency %f\n" %
(log_ts.get(), self.msgq_id, (freq / 1e6)))
self.demod.reset() # reset gardner-costas tracking loop
self.decoder.sync_reset() # reset frame_assembler
return True
def process_qmsg(self, msg): # Handle UI requests
RX_COMMANDS = 'skip lockout hold whitelist reload'.split()
if msg is None:
return True
s = msg.to_string()
if type(s) is not str and isinstance(s, bytes):
# should only get here if python3
s = s.decode()
if s == 'quit':
return True
elif s == 'update': # UI initiated update request
self.ui_last_update = time.time()
self.ui_freq_update()
if self.trunking is None or self.trunk_rx is None:
return False
js = self.trunk_rx.to_json() # extract data from trunking module
msg = gr.message().make_from_string(js, -4, 0, 0)
self.ui_in_q.insert_tail(msg) # send info back to UI
self.ui_plot_update()
elif s == 'toggle_plot':
if not self.get_interactive():
sys.stderr.write(
"%s Cannot start plots for non-realtime (replay) sessions\n"
% log_ts.get())
return
plot_type = int(msg.arg1())
msgq_id = int(msg.arg2())
self.find_channel(msgq_id).toggle_plot(plot_type)
elif s == 'adj_tune':
freq = msg.arg1()
msgq_id = int(msg.arg2())
self.find_channel(msgq_id).adj_tune(freq)
elif s == 'set_debug':
dbglvl = int(msg.arg1())
self.set_debug(dbglvl)
elif s == 'get_config':
if self.terminal is not None and self.terminal_config is not None:
self.terminal_config['json_type'] = "terminal_config"
js = json.dumps(self.terminal_config)
msg = gr.message().make_from_string(js, -4, 0, 0)
self.ui_in_q.insert_tail(msg) # send configuration back to UI
pass
else:
return False
elif s == 'dump_tgids':
self.trunk_rx.dump_tgids()
elif s == 'watchdog':
if self.ui_last_update > 0 and (
time.time() > (self.ui_last_update + self.ui_timeout)):
self.ui_last_update = 0
sys.stderr.write("%s UI Timeout\n" % log_ts.get())
for chan in self.channels:
chan.close_plots()
elif s in RX_COMMANDS:
if self.trunking is not None and self.trunk_rx is not None:
self.trunk_rx.ui_command(s, msg.arg1(), msg.arg2())
return False
def enqueue(self, addr, grp, cmd, ts):
grp_str = "G" if (grp != 0) else "I"
if self.is_chan(cmd):
freq = self.get_freq(cmd)
if self.debug >= 9:
sys.stderr.write("%s [%d] SMARTNET OSW (0x%04x,%s,0x%03x,%f)\n" % (log_ts.get(), self.msgq_id, addr, grp_str, cmd, freq))
else:
freq = 0.0
if self.debug >= 9:
sys.stderr.write("%s [%d] SMARTNET OSW (0x%04x,%s,0x%03x)\n" % (log_ts.get(), self.msgq_id, addr, grp_str, cmd))
self.osw_q.append((addr, (grp != 0), cmd, self.is_chan(cmd), freq, ts))
def load_bl_wl(self):
self.skiplist = self.control.get_skiplist()
if 'blacklist' in self.config and self.config['blacklist'] != "":
sys.stderr.write("%s [%d] reading channel blacklist file: %s\n" % (log_ts.get(), self.msgq_id, self.config['blacklist']))
self.blacklist = get_int_dict(self.config['blacklist'], self.msgq_id)
else:
self.blacklist = self.control.get_blacklist()
if 'whitelist' in self.config and self.config['whitelist'] != "":
sys.stderr.write("%s [%d] reading channel whitelist file: %s\n" % (log_ts.get(), self.msgq_id, self.config['whitelist']))
self.whitelist = get_int_dict(self.config['whitelist'], self.msgq_id)
else:
self.whitelist = self.control.get_whitelist()
def error_tracking(self):
UPDATE_TIME = 3.0
if self.last_error_update + UPDATE_TIME > time.time() \
or self.last_change_freq_at + UPDATE_TIME > time.time():
return
self.last_error_update = time.time()
band = self.demod.get_error_band()
freq_error = self.demod.get_freq_error()
if band:
self.error_band += band
if band or abs(
freq_error
) >= 200: # avoid hunting by only compensating errors over 200hz
self.freq_correction += freq_error * 0.15
do_freq_update = 1
else:
do_freq_update = 0
if self.freq_correction > 600:
self.freq_correction -= 1200
self.error_band += 1
elif self.freq_correction < -600:
self.freq_correction += 1200
self.error_band -= 1
self.tuning_error = self.error_band * 1200 + self.freq_correction
e = 0
if self.last_change_freq > 0:
err_ppm = round(
(self.tuning_error * 1e6) / float(self.last_change_freq))
err_hz = -int(self.tuning_error - (err_ppm *
(self.last_change_freq / 1e6)))
if self.options.verbosity >= 10:
sys.stderr.write('%s frequency_tracking\t%d\t%d\t%d\t%d\t%d\n' %
(log_ts.get(), freq_error, self.error_band,
self.tuning_error, err_ppm, err_hz))
if do_freq_update:
corrected_ppm = self.options.freq_corr + err_ppm # compute new device ppm based on starting point plus adjustment
if corrected_ppm != self.last_set_ppm:
self.src.set_freq_corr(corrected_ppm)
self.last_set_ppm = corrected_ppm
if self.options.verbosity >= 1:
sys.stderr.write(
'%s Adjusting tuning correction: ppm(%d) ["-q %d"]\n' %
(log_ts.get(), corrected_ppm, corrected_ppm))
self.options.fine_tune = err_hz # replace existing fine_tune with new correction value
self.set_freq(self.target_freq)
if self.options.verbosity >= 2:
sys.stderr.write(
'%s Adjusting tuning: ppm(%d), fine_tune(%d) ["-q %d -d %d"]\n'
% (log_ts.get(), corrected_ppm, err_hz, corrected_ppm,
err_hz))
def read_tags_file(self, tags_file):
import csv
try:
with open(tags_file, 'r') as csvfile:
sreader = csv.reader(decomment(csvfile), delimiter='\t', quotechar='"', quoting=csv.QUOTE_ALL)
for row in sreader:
if len(row) < 2:
continue
try:
if ord(row[0][0]) == 0xfeff:
row[0] = row[0][1:] # remove UTF8_BOM (Python2 version)
if ord(row[0][0]) == 0xef and ord(row[0][1]) == 0xbb and ord(row[0][2]) == 0xbf:
row[0] = row[0][3:] # remove UTF8_BOM (Python3 version)
tgid = int(row[0])
tag = utf_ascii(row[1])
except (IndexError, ValueError) as ex:
continue
if len(row) >= 3:
try:
prio = int(row[2])
except ValueError as ex:
prio = TGID_DEFAULT_PRIO
else:
prio = TGID_DEFAULT_PRIO
if tgid not in self.talkgroups:
self.add_default_tgid(tgid)
self.talkgroups[tgid]['tag'] = tag
self.talkgroups[tgid]['prio'] = prio
sys.stderr.write("%s [%d] setting tgid(%d), prio(%d), tag(%s)\n" % (log_ts.get(), self.msgq_id, tgid, prio, tag))
except IOError as ex:
sys.stderr.write("%s [%d] Error: %s: %s\n" % (log_ts.get(), self.msgq_id, ex.strerror, tags_file))
def __init__(self, name, config):
gr.hier_block2.__init__(
self,
"op25_wavsrc_f",
gr.io_signature(0, 0, 0), # Input signature
gr.io_signature(1, 1, gr.sizeof_float)) # Output signature
self.config = config
self.name = name
self.freq = 0
# load config
self.wav_file = str(from_dict(config, 'wav_file', ""))
self.wav_size = int(from_dict(config, 'wav_size', 1))
self.wav_gain = float(from_dict(config, 'wav_gain', 1.0))
# Create the source block
self.wavsrc = blocks.wavfile_source(self.wav_file)
self.rate = self.wavsrc.sample_rate()
self.size = self.wavsrc.bits_per_sample()
self.chans = self.wavsrc.channels()
sys.stderr.write(
"%s [%s] Enabling WAV file source: rate=%d, bit=%d, channels=%d\n"
% (log_ts.get(), name, self.rate, self.size, self.chans))
# Create the throttle to set playback rate
self.throttle = blocks.throttle(gr.sizeof_float, self.rate)
# Gain
self.gain = blocks.multiply_const_ff(self.wav_gain)
# Connect src and throttle
self.connect(self.wavsrc, self.throttle, self.gain, self)
def expire_talkgroup(self,
tgid=None,
update_meta=True,
reason="unk",
auto_hold=True):
expire_time = time.time()
self.nbfm_ctrl(self.msgq_id, False) # disable nbfm
self.slot_set({'tuner': self.msgq_id, 'slot': 4}) # disable p25cai
if self.current_tgid is None:
return
self.talkgroups[self.current_tgid]['receiver'] = None
self.talkgroups[self.current_tgid]['srcaddr'] = 0
self.talkgroups[self.current_tgid]['release_time'] = expire_time
if self.debug > 1:
sys.stderr.write(
"%s [%d] releasing: tg(%d), freq(%f), reason(%s)\n" %
(log_ts.get(), self.msgq_id, self.current_tgid,
(self.tuned_frequency / 1e6), reason))
if auto_hold:
self.hold_tgid = self.current_tgid
self.hold_until = expire_time + TGID_HOLD_TIME
self.current_tgid = None
if update_meta:
meta_update(self.meta_q)
def post_init(self):
if self.debug >= 1:
sys.stderr.write("%s [%d] Initializing DMR receiver\n" % (log_ts.get(), self.msgq_id))
if self.msgq_id == 0:
self.tune_next_chan(msgq_id=0, chan=0, slot=0)
else:
self.tune_next_chan(msgq_id=1, chan=0, slot=4)
def configure_p25_tdma(self, params):
set_tdma = False
if 'tdma' in params and params['tdma'] is not None:
set_tdma = True
self.decoder.set_slotid(params['tdma'])
if set_tdma == self.tdma_state:
return
self.tdma_state = set_tdma
if set_tdma:
hash = '%x%x%x' % (params['nac'], params['sysid'], params['wacn'])
if hash not in self.xor_cache:
self.xor_cache[hash] = lfsr.p25p2_lfsr(
params['nac'], params['sysid'], params['wacn']).xor_chars
if self.verbosity >= 5:
sys.stderr.write(
"%s [%d] Caching TDMA xor mask for NAC: 0x%x, SYSID: 0x%x, WACN: 0x%x\n"
% (log_ts.get(), self.msgq_id, params['nac'],
params['sysid'], params['wacn']))
self.decoder.set_xormask(self.xor_cache[hash])
rate = 6000
else:
rate = self.config['symbol_rate']
self.symbol_rate = rate
self.demod.set_omega(rate)
if 'eye' in self.sinks:
self.sinks['eye'][0].set_sps(self.config['if_rate'] / rate)
def read_tags_file(self, tags_file):
import csv
try:
with open(tags_file, 'r') as csvfile:
sreader = csv.reader(csvfile, delimiter='\t', quotechar='"', quoting=csv.QUOTE_ALL)
for row in sreader:
try:
tgid = int(row[0])
tag = utf_ascii(row[1])
except (IndexError, ValueError) as ex:
continue
if len(row) >= 3:
try:
prio = int(row[2])
except ValueError as ex:
prio = TGID_DEFAULT_PRIO
else:
prio = TGID_DEFAULT_PRIO
if tgid not in self.talkgroups:
self.add_default_tgid(tgid)
self.talkgroups[tgid]['tag'] = tag
self.talkgroups[tgid]['prio'] = prio
sys.stderr.write("%s [%d] setting tgid(%d), prio(%d), tag(%s)\n" % (log_ts.get(), self.msgq_id, tgid, prio, tag))
except IOError as ex:
sys.stderr.write("%s [%d] Error: %s: %s\n" % (log_ts.get(), self.msgq_id, ex.strerror, tags_file))
def change_freq(self, params):
tuner = params['tuner']
if (tuner < 0) or (tuner > len(self.channels)):
if self.verbosity:
sys.stderr.write("%s No %s channel available for tuning\n" % (log_ts.get(), params['tuner']))
return False
chan = self.channels[tuner]
if 'sigtype' in params and params['sigtype'] == "P25": # P25 specific config
chan.configure_p25_tdma(params)
if not chan.set_freq(params['freq']):
chan.set_slot(0)
return False
if 'slot' in params:
chan.set_slot(params['slot'])
if 'chan' in params:
self.trunk_rx.receivers[tuner].current_chan = params['chan']
if 'state' in params:
self.trunk_rx.receivers[tuner].current_state = params['state']
if 'type' in params:
self.trunk_rx.receivers[tuner].current_type = params['type']
if 'time' in params:
self.trunk_rx.receivers[tuner].tune_time = params['time']
return True
def __init__(self, name, config):
gr.hier_block2.__init__(self, "op25_iqsrc_c",
gr.io_signature(0, 0, 0), # Input signature
gr.io_signature(1, 1, gr.sizeof_gr_complex)) # Output signature
self.config = config
self.name = name
self.is_dsd_file = False
self.freq = 0
self.ts = 0
sys.stderr.write("%s [%s] Enabling IQ file source\n" % (log_ts.get(), name))
# load config
self.iq_file = str(from_dict(config, 'iq_file', ""))
self.iq_seek = int(from_dict(config, 'iq_seek', 0))
self.iq_size = int(from_dict(config, 'iq_size', 1))
self.iq_signed = bool(from_dict(config, 'iq_signed', False))
self.rate = int(from_dict(config, 'rate', 2400000))
# Create the source block
self.iqsrc = op25_repeater.iqfile_source(self.iq_size, self.iq_file, self.iq_signed, self.iq_seek, 0)
if self.iqsrc.is_dsd():
self.is_dsd_file = True
self.rate = self.iqsrc.get_dsd_rate()
self.freq = self.iqsrc.get_dsd_freq()
self.ts = self.iqsrc.get_dsd_ts()
# Create the throttle to set playback rate
self.throttle = blocks.throttle(gr.sizeof_gr_complex, self.rate)
# Connect src and throttle
self.connect(self.iqsrc, self.throttle, self)
def update_voice_frequency(self,
float_freq,
tgid=None,
srcaddr=-1,
mode=-1,
ts=time.time()):
if not float_freq: # e.g., channel identifier not yet known
return False
frequency = int(float_freq *
1e6) # use integer not float as dictionary keys
rc = self.update_talkgroups(frequency, tgid, srcaddr, mode, ts)
base_tgid = tgid & 0xfff0
tgid_stat = tgid & 0x000f
if frequency not in self.voice_frequencies:
self.voice_frequencies[frequency] = {'counter': 0}
sorted_freqs = collections.OrderedDict(
sorted(self.voice_frequencies.items()))
self.voice_frequencies = sorted_freqs
if self.debug >= 5:
sys.stderr.write('%s [%d] new freq=%f\n' %
(log_ts.get(), self.msgq_id,
(frequency / 1e6)))
if 'tgid' not in self.voice_frequencies[frequency]:
self.voice_frequencies[frequency]['tgid'] = [None]
self.voice_frequencies[frequency]['tgid'] = base_tgid
self.voice_frequencies[frequency]['counter'] += 1
self.voice_frequencies[frequency]['time'] = time.time()
return rc
def get_int_dict(s, _id=0): # used to read blacklist/whitelist files
d = {}
try:
with open(s, "r") as f:
for v in f:
v = v.split("\t", 1) # split on tab
try:
v0 = int(
v[0]) # first parameter is tgid or start of tgid range
v1 = v0
if (len(v) > 1) and (
int(v[1]) > v0
): # second parameter if present is end of tgid range
v1 = int(v[1])
for tg in range(v0, (v1 + 1)):
if tg not in d: # is this a new tg?
d[tg] = [
] # if so, add to dict (key only, value null)
sys.stderr.write(
'%s [%s] added talkgroup %d from %s\n' %
(log_ts.get(), _id, tg, s))
except (IndexError, ValueError) as ex:
continue
f.close()
except (IOError) as ex:
sys.stderr.write("%s: %s\n" % (ex.strerror, s))
return dict.fromkeys(d)
def write(self, pcm_data):
datalen = len(pcm_data)
n_frames = c_ulong(datalen / self.framesize)
c_data = c_char_p(pcm_data)
ret = 0
if (self.c_pcm.value == None):
sys.stderr.write("PCM device is closed\n")
return -1
ret = self.libasound.snd_pcm_writei(self.c_pcm, cast(c_data, POINTER(c_void_p)), n_frames)
if (ret < 0):
if (ret == -errno.EPIPE): # underrun
if (LOG_AUDIO_XRUNS):
sys.stderr.write("%s PCM underrun\n" % log_ts.get())
ret = self.libasound.snd_pcm_recover(self.c_pcm, ret, 1)
if (ret >= 0):
ret = self.libasound.snd_pcm_writei(self.c_pcm, cast(c_data, POINTER(c_void_p)), n_frames)
else:
ret = self.libasound.snd_pcm_prepare(self.c_pcm)
ret = self.libasound.snd_pcm_writei(self.c_pcm, cast(c_data, POINTER(c_void_p)), n_frames)
elif (ret == -errno.ESTRPIPE): # suspended
while True:
ret = self.libasound.snd_pcm_resume(self.c_pcm)
if (ret != -errno.EAGAIN):
break
time.sleep(1)
if (ret < 0):
ret = self.libasound.snd_pcm_prepare(self.c_pcm)
elif (ret < 0): # other error
ret = self.libasound.snd_pcm_prepare(self.c_pcm)
return ret
def process_qmsg(self, msg, curr_time):
rc = False
m_type = ctypes.c_int16(msg.type() & 0xffff).value
m_rxid = int(msg.arg1()) >> 1
m_ts = float(msg.arg2())
if (m_type == -1): # Voice Channel Timeout
pass
elif (m_type == -4
): # P25 sync established (indicates this is a digital channel)
if self.current_tgid is not None:
if self.debug >= 9:
sys.stderr.write(
"%s [%d] digital sync detected: tg(%d), freq(%f), mode(%d)\n"
% (log_ts.get(), self.msgq_id, self.current_tgid,
(self.tuned_frequency / 1e6),
self.talkgroups[self.current_tgid]['mode']))
self.nbfm_ctrl(self.msgq_id, False) # disable nbfm
self.talkgroups[
self.current_tgid]['mode'] = 1 # set mode to digital
elif (m_type == 3
): # DUID-3 (call termination without channel release)
pass
elif (m_type == 15): # DUID-15 (call termination with channel release)
self.expire_talkgroup(reason="duid15")
rc = True
return rc
def process_qmsg(self, msg, curr_time):
m_proto = ctypes.c_int16(msg.type(
) >> 16).value # upper 16 bits of msg.type() is signed protocol
if m_proto != 2: # Smartnet m_proto=2
return False
m_type = ctypes.c_int16(msg.type() & 0xffff).value
m_rxid = int(msg.arg1()) >> 1
m_ts = float(msg.arg2())
if (m_type == -1): # Control Channel Timeout
if self.debug > 10:
sys.stderr.write("%s [%d] control channel timeout\n" %
(log_ts.get(), self.msgq_id))
self.cc_retries += 1
if self.cc_retries >= CC_TIMEOUT_RETRIES:
self.tune_next_cc()
elif (m_type == 0): # OSW Receieved
s = msg.to_string()
osw_addr = (ord(s[0]) << 8) + ord(s[1])
osw_grp = ord(s[2])
osw_cmd = (ord(s[3]) << 8) + ord(s[4])
self.enqueue(osw_addr, osw_grp, osw_cmd, m_ts)
self.stats['osw_count'] += 1
self.last_osw = m_ts
rc = False
rc |= self.process_osws()
rc |= self.expire_talkgroups(curr_time)
return rc
def load_json(self, metacfg):
try:
with open(metacfg) as json_file:
self.cfg = json.load(json_file)
except (ValueError, KeyError):
sys.stderr.write(
"%s meta_server::load_json(): Error reading metadata config file: %s\n"
% (log_ts.get(), metacfg))
def skiplist_update(self, start_time):
expired_tgs = [tg for tg in list(self.skiplist.keys())
if self.skiplist[tg] is not None
and self.skiplist[tg] < start_time]
for tg in expired_tgs:
self.skiplist.pop(tg)
if self.debug > 1:
sys.stderr.write("%s [%d] removing expired skiplist: tg(%d)\n" % (log_ts.get(), self.msgq_id, tg));
def __init__(self, debug=0, frequency_set=None, nac_set=None, slot_set=None, nbfm_ctrl=None, chans={}):
self.frequency_set = frequency_set
self.slot_set = slot_set
self.nac_set = nac_set
self.debug = debug
self.receivers = {}
self.chans = {}
for _chan in chans:
if not 'lcn' in _chan:
sys.stderr.write("%s Trunking chan[%d] has no lcn defined\n" % (log_ts.get(), chans.index(_chan)))
continue
self.chans[_chan['lcn']] = dmr_chan(debug, _chan['lcn'], get_frequency(from_dict(_chan, 'frequency', 0.0)))
sys.stderr.write("%s Configuring channel lcn(%d), freq(%f), cc(%d)\n" % (log_ts.get(), _chan['lcn'], get_frequency(from_dict(_chan, 'frequency', 0.0))/1e6, int(from_dict(_chan, 'cc', 0))))
if len(self.chans) == 0:
sys.stderr.write("%s Trunking has no valid chans, aborting\n" % (log_ts.get()))
exit(1)
def configure_channels(self, config):
self.channels = []
for cfg in config:
dev = self.find_device(cfg)
if (dev is None) and 'frequency' in cfg:
sys.stderr.write("* * * Frequency %d not within spectrum band of any device - ignoring!\n" % cfg['frequency'])
continue
elif dev is None:
sys.stderr.write("* * * Channel '%s' not attached to any device - ignoring!\n" % cfg['name'])
continue
elif dev.tunable:
for ch in self.channels:
if ch.device == dev:
sys.stderr.write("* * * Channel '%s' cannot share a tunable device - ignoring!\n" % cfg['name'])
dev = None
break
if dev == None:
continue
meta_s, meta_q = None, None
if self.metadata is not None and 'meta_stream_name' in cfg and cfg['meta_stream_name'] != "" and cfg['meta_stream_name'] in self.meta_streams:
meta_s, meta_q = self.meta_streams[cfg['meta_stream_name']]
if self.trunking is not None:
msgq_id = len(self.channels)
chan = channel(cfg, dev, self.verbosity, msgq_id, self.rx_q, self)
self.channels.append(chan)
self.trunk_rx.add_receiver(msgq_id, config=cfg, meta_q=meta_q, freq=chan.frequency)
else:
msgq_id = -1 - len(self.channels)
chan = channel(cfg, dev, self.verbosity, msgq_id, self.rx_q, self)
self.channels.append(chan)
if ("raw_input" in cfg) and (cfg['raw_input'] != ""):
sys.stderr.write("%s Reading raw symbols from file: %s\n" % (log_ts.get(), cfg['raw_input']))
chan.raw_file = blocks.file_source(gr.sizeof_char, str(cfg['raw_input']), False)
if ("raw_seek" in cfg) and (cfg['raw_seek'] != 0):
chan.raw_file.seek(int(cfg['raw_seek']) * 4800, 0)
chan.throttle = blocks.throttle(gr.sizeof_char, chan.symbol_rate)
chan.throttle.set_max_noutput_items(chan.symbol_rate/50);
self.connect(chan.raw_file, chan.throttle)
self.connect(chan.throttle, chan.decoder)
self.set_interactive(False) # this is non-interactive 'replay' session
else:
self.connect(dev.src, chan.demod, chan.decoder)
if ("raw_output" in cfg) and (cfg['raw_output'] != ""):
sys.stderr.write("%s Saving raw symbols to file: %s\n" % (log_ts.get(), cfg['raw_output']))
chan.raw_sink = blocks.file_sink(gr.sizeof_char, str(cfg['raw_output']))
self.connect(chan.demod, chan.raw_sink)
def add_skiplist(self, tgid, end_time=None):
if not tgid or (tgid <= 0) or (tgid > 65534):
if self.debug > 1:
sys.stderr.write(
"%s [%d] skiplist tgid(%d) out of range (1-65534)\n" %
(log_ts.get(), self.msgq_id, tgid))
return
if tgid in self.skiplist:
return
self.skiplist[tgid] = end_time
if self.debug > 1:
sys.stderr.write("%s [%d] skiplisting: tgid(%d)\n" %
(log_ts.get(), self.msgq_id, tgid))
if self.current_tgid and self.current_tgid in self.skiplist:
self.expire_talkgroup(reason="skiplisted")
self.hold_mode = False
self.hold_tgid = None
self.hold_until = time.time()
def post_init(self):
if self.debug >= 1:
sys.stderr.write("%s [%d] Initializing voice channel\n" % (log_ts.get(), self.msgq_id))
self.slot_set({'tuner': self.msgq_id,'slot': 4}) # disable voice
if self.control is not None:
self.talkgroups = self.control.get_talkgroups()
self.load_bl_wl()
self.tgid_hold_time = float(from_dict(self.control.config, 'tgid_hold_time', TGID_HOLD_TIME))
meta_update(self.meta_q)
def post_init(self):
if self.msgq_id < 0:
sys.stderr.write("%f Smartnet system has no channel assigned!\n" %
(time.time()))
return
if self.debug >= 1:
sys.stderr.write("%s [%d] Initializing Smartnet system\n" %
(log_ts.get(), self.msgq_id))
if 'tgid_tags_file' in self.config and self.config[
'tgid_tags_file'] != "":
sys.stderr.write(
"%s [%d] reading system tgid_tags_file: %s\n" %
(log_ts.get(), self.msgq_id, self.config['tgid_tags_file']))
self.read_tags_file(self.config['tgid_tags_file'])
if 'blacklist' in self.config and self.config['blacklist'] != "":
sys.stderr.write(
"%s [%d] reading system blacklist file: %s\n" %
(log_ts.get(), self.msgq_id, self.config['blacklist']))
self.blacklist = get_int_dict(self.config['blacklist'],
self.msgq_id)
if 'whitelist' in self.config and self.config['whitelist'] != "":
sys.stderr.write(
"%s [%d] reading system whitelist file: %s\n" %
(log_ts.get(), self.msgq_id, self.config['whitelist']))
self.whitelist = get_int_dict(self.config['whitelist'],
self.msgq_id)
cc_list = from_dict(self.config, 'control_channel_list', "")
if cc_list == "":
sys.stderr.write(
"Aborting. Smartnet Trunking 'control_channel_list' parameter is empty or not found\n"
)
sys.exit(1)
for f in cc_list.split(','):
self.cc_list.append(get_frequency(f))
self.tune_next_cc()
def add_whitelist(self, tgid):
if not tgid or (tgid <= 0) or (tgid > 65534):
if self.debug > 0:
sys.stderr.write("%s [%d] whitelist tgid(%d) out of range (1-65534)\n" % (log_ts.get(), self.msgq_id, tgid))
return
if self.blacklist and tgid in self.blacklist:
self.blacklist.pop(tgid)
if self.debug > 1:
sys.stderr.write("%s [%d] de-blacklisting tgid(%d)\n" % (log_ts.get(), self.msgq_id, tgid))
if self.whitelist is None:
self.whitelist = {}
if tgid in self.whitelist:
return
self.whitelist[tgid] = None
if self.debug > 1:
sys.stderr.write("%s [%d] whitelisting tgid(%d)\n" % (log_ts.get(), self.msgq_id, tgid))
if self.current_tgid and self.current_tgid not in self.whitelist:
self.expire_talkgroup(reason = "not whitelisted")
self.hold_mode = False
self.hold_tgid = None
self.hold_until = time.time()
def get_freq(self, cmd): # Convert 'cmd' into band-dependent frequency
freq = 0.0
bandplan = from_dict(self.config, 'bandplan', "800_reband")
band = bandplan[:3]
subtype = bandplan[3:len(bandplan)].lower().lstrip("_-:")
if band == "800":
if cmd <= 0x2CF:
if subtype == "reband": # REBAND
if cmd < 0x1b8:
freq = 851.0125 + (0.025 * cmd)
if cmd >= 0x1B8 and cmd <= 0x22F:
freq = 851.0250 + (0.025 * (cmd - 0x1B8))
elif subtype == "splinter" and cmd <= 0x257: # SPLINTER site
freq = 851.0 + (0.025 * cmd)
else:
freq = 851.0125 + (0.025 * cmd) # STANDARD site
elif cmd <= 0x2f7:
freq = 866.0000 + (0.025 * (cmd - 0x2D0))
elif cmd >= 0x32F and cmd <= 0x33F:
freq = 867.0000 + (0.025 * (cmd - 0x32F))
elif cmd == 0x3BE:
freq = 868.9750
elif cmd >= 0x3C1 and cmd <= 0x3FE:
freq = 867.4250 + (0.025 * (cmd - 0x3C1))
elif band == "900":
freq = 935.0125 + (0.0125 * cmd)
elif band == "400":
bp_spacing = float(from_dict(self.config, 'bp_spacing', "0.025"))
bp_base_offset = int(from_dict(self.config, 'bp_base_offset', 380))
bp_mid_offset = int(from_dict(self.config, 'bp_mid_offset', 760))
bp_high_offset = int(from_dict(self.config, 'bp_high_offset', 760))
bp_base = float(from_dict(self.config, 'bp_base', "0.0"))
bp_mid = float(from_dict(self.config, 'bp_mid', "0.0"))
bp_high = float(from_dict(self.config, 'bp_high', "0.0"))
if (cmd >= bp_base_offset) and (cmd < bp_mid_offset):
freq = bp_base + (bp_spacing * (cmd - bp_base_offset))
elif (cmd >= bp_mid_offset) and (cmd < bp_high_offset):
freq = bp_mid + (bp_spacing * (cmd - bp_mid_offset))
elif (cmd >= bp_high_offset) and (cmd < 760):
freq = bp_high + (bp_spacing * (cmd - bp_high_offset))
else:
if self.debug >= 5:
sys.stderr.write(
"%s [%d] SMARTNET OSW freq cmd: %d out of range\n" %
(log_ts.get(), self.msgq_id, cmd))
return round(
freq, 5
) # round to 5 decimal places to eliminate accumulated floating point errors
def open(self, hwdevice):
self.out = c_void_p(
self.libpa.pa_simple_new(None, "OP25".encode("ascii"),
PA_STREAM_PLAYBACK, None,
"OP25 Playback".encode('ascii'),
byref(self.ss), None, None,
byref(self.error)))
if not self.out:
sys.stderr.write("%s Could not open PulseAudio stream: %s\n" %
(log_ts.get(), self.libpa.strerror(self.error)))
return self.error.value
def expire_talkgroups(self, curr_time):
if curr_time < self.last_expiry_check + EXPIRY_TIMER:
return False
rc = False
self.last_expiry_check = curr_time
for tgid in self.talkgroups:
if (self.talkgroups[tgid]['receiver'] is not None) and (curr_time >= self.talkgroups[tgid]['time'] + TGID_EXPIRY_TIME):
if self.debug > 1:
sys.stderr.write("%s [%d] expiring tg(%d), freq(%f)\n" % (log_ts.get(), self.msgq_id, tgid, (self.talkgroups[tgid]['frequency']/1e6)))
self.talkgroups[tgid]['receiver'].expire_talkgroup(reason="expiry")
rc = True
return rc
def __init__(self, dest, debug, input_rate, deviation, squelch, gain,
msgq_id, msg_q):
gr.hier_block2.__init__(
self,
"op25_nbfm_c",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
gr.io_signature(0, 0, 0)) # Output signature
self.debug = debug
self.msgq_id = msgq_id
# 'switch' enables the analog decoding to be turned on/off
self.switch = blocks.copy(gr.sizeof_gr_complex)
self.switch.set_enabled(False)
# power squelch
self.squelch = analog.simple_squelch_cc(squelch, gain)
# quadrature demod
fm_demod_gain = input_rate / (4 * pi * deviation)
self.fm_demod = analog.quadrature_demod_cf(fm_demod_gain)
# fm deemphasis
self.deemph = analog.fm_deemph(input_rate, 0.00075)
# decimate and filter
audio_decim = input_rate // _PCM_RATE
lpf_taps = filter.firdes.low_pass(
1.0, # gain
input_rate, # sampling rate
3000.0, # Audio high cutoff (remove aliasing)
200.0, # transition
filter.firdes.WIN_HAMMING) # filter type
hpf_taps = filter.firdes.high_pass(
1.0, # gain
_PCM_RATE, # sampling rate
200.0, # Audio low cutoff (remove sub-audio signaling)
10.0, # Sharp transition band
filter.firdes.WIN_HAMMING) # filter type
self.lp_filter = filter.fir_filter_fff(audio_decim, lpf_taps)
self.hp_filter = filter.fir_filter_fff(1, hpf_taps)
# analog_udp block converts +/-1.0 float samples to S16LE PCM and sends over UDP
self.analog_udp = op25_repeater.analog_udp(dest, debug, msgq_id, msg_q)
self.connect(self, self.switch, self.squelch, self.fm_demod,
self.deemph, self.lp_filter, self.hp_filter,
self.analog_udp)
sys.stderr.write("%s [%d] Enabling nbfm analog audio\n" %
(log_ts.get(), msgq_id))
