openwebrx-clone/owrx/wsjt.py
2020-04-25 16:22:40 +02:00

220 lines
6.7 KiB
Python

from datetime import datetime, timezone
from owrx.map import Map, LocatorLocation
import re
from owrx.metrics import Metrics, CounterMetric
from owrx.pskreporter import PskReporter
from owrx.parser import Parser
from owrx.audio import AudioChopperProfile
from abc import ABC, ABCMeta, abstractmethod
from owrx.config import Config
import logging
logger = logging.getLogger(__name__)
class WsjtProfile(AudioChopperProfile, metaclass=ABCMeta):
def decoding_depth(self, mode):
pm = Config.get()
# mode-specific setting?
if "wsjt_decoding_depths" in pm and mode in pm["wsjt_decoding_depths"]:
return pm["wsjt_decoding_depths"][mode]
# return global default
if "wsjt_decoding_depth" in pm:
return pm["wsjt_decoding_depth"]
# default when no setting is provided
return 3
class Ft8Profile(WsjtProfile):
def getInterval(self):
return 15
def getFileTimestampFormat(self):
return "%y%m%d_%H%M%S"
def decoder_commandline(self, file):
return ["jt9", "--ft8", "-d", str(self.decoding_depth("ft8")), file]
class WsprProfile(WsjtProfile):
def getInterval(self):
return 120
def getFileTimestampFormat(self):
return "%y%m%d_%H%M"
def decoder_commandline(self, file):
cmd = ["wsprd"]
if self.decoding_depth("wspr") > 1:
cmd += ["-d"]
cmd += [file]
return cmd
class Jt65Profile(WsjtProfile):
def getInterval(self):
return 60
def getFileTimestampFormat(self):
return "%y%m%d_%H%M"
def decoder_commandline(self, file):
return ["jt9", "--jt65", "-d", str(self.decoding_depth("jt65")), file]
class Jt9Profile(WsjtProfile):
def getInterval(self):
return 60
def getFileTimestampFormat(self):
return "%y%m%d_%H%M"
def decoder_commandline(self, file):
return ["jt9", "--jt9", "-d", str(self.decoding_depth("jt9")), file]
class Ft4Profile(WsjtProfile):
def getInterval(self):
return 7.5
def getFileTimestampFormat(self):
return "%y%m%d_%H%M%S"
def decoder_commandline(self, file):
return ["jt9", "--ft4", "-d", str(self.decoding_depth("ft4")), file]
class WsjtParser(Parser):
modes = {"~": "FT8", "#": "JT65", "@": "JT9", "+": "FT4"}
def parse(self, messages):
for data in messages:
try:
freq, raw_msg = data
self.setDialFrequency(freq)
msg = raw_msg.decode().rstrip()
# known debug messages we know to skip
if msg.startswith("<DecodeFinished>"):
return
if msg.startswith(" EOF on input file"):
return
modes = list(WsjtParser.modes.keys())
if msg[21] in modes or msg[19] in modes:
decoder = Jt9Decoder()
else:
decoder = WsprDecoder()
out = decoder.parse(msg, freq)
if "mode" in out:
self.pushDecode(out["mode"])
if "callsign" in out and "locator" in out:
Map.getSharedInstance().updateLocation(
out["callsign"], LocatorLocation(out["locator"]), out["mode"], self.band
)
PskReporter.getSharedInstance().spot(out)
self.handler.write_wsjt_message(out)
except ValueError:
logger.exception("error while parsing wsjt message")
def pushDecode(self, mode):
metrics = Metrics.getSharedInstance()
band = "unknown"
if self.band is not None:
band = self.band.getName()
if band is None:
band = "unknown"
if mode is None:
mode = "unknown"
name = "wsjt.decodes.{band}.{mode}".format(band=band, mode=mode)
metric = metrics.getMetric(name)
if metric is None:
metric = CounterMetric()
metrics.addMetric(name, metric)
metric.inc()
class Decoder(ABC):
def parse_timestamp(self, instring, dateformat):
ts = datetime.strptime(instring, dateformat)
return int(
datetime.combine(datetime.utcnow().date(), ts.time()).replace(tzinfo=timezone.utc).timestamp() * 1000
)
@abstractmethod
def parse(self, msg, dial_freq):
pass
class Jt9Decoder(Decoder):
locator_pattern = re.compile("[A-Z0-9]+\\s([A-Z0-9]+)\\s([A-R]{2}[0-9]{2})$")
def parse(self, msg, dial_freq):
# ft8 sample
# '222100 -15 -0.0 508 ~ CQ EA7MJ IM66'
# jt65 sample
# '2352 -7 0.4 1801 # R0WAS R2ABM KO85'
# '0003 -4 0.4 1762 # CQ R2ABM KO85'
modes = list(WsjtParser.modes.keys())
if msg[19] in modes:
dateformat = "%H%M"
else:
dateformat = "%H%M%S"
timestamp = self.parse_timestamp(msg[0 : len(dateformat)], dateformat)
msg = msg[len(dateformat) + 1 :]
modeChar = msg[14:15]
mode = WsjtParser.modes[modeChar] if modeChar in WsjtParser.modes else "unknown"
wsjt_msg = msg[17:53].strip()
result = {
"timestamp": timestamp,
"db": float(msg[0:3]),
"dt": float(msg[4:8]),
"freq": dial_freq + int(msg[9:13]),
"mode": mode,
"msg": wsjt_msg,
}
result.update(self.parseMessage(wsjt_msg))
return result
def parseMessage(self, msg):
m = Jt9Decoder.locator_pattern.match(msg)
if m is None:
return {}
# this is a valid locator in theory, but it's somewhere in the arctic ocean, near the north pole, so it's very
# likely this just means roger roger goodbye.
if m.group(2) == "RR73":
return {"callsign": m.group(1)}
return {"callsign": m.group(1), "locator": m.group(2)}
class WsprDecoder(Decoder):
wspr_splitter_pattern = re.compile("([A-Z0-9]*)\\s([A-R]{2}[0-9]{2})\\s([0-9]+)")
def parse(self, msg, dial_freq):
# wspr sample
# '2600 -24 0.4 0.001492 -1 G8AXA JO01 33'
# '0052 -29 2.6 0.001486 0 G02CWT IO92 23'
wsjt_msg = msg[29:].strip()
result = {
"timestamp": self.parse_timestamp(msg[0:4], "%H%M"),
"db": float(msg[5:8]),
"dt": float(msg[9:13]),
"freq": dial_freq + int(float(msg[14:24]) * 1e6),
"drift": int(msg[25:28]),
"mode": "WSPR",
"msg": wsjt_msg,
}
result.update(self.parseMessage(wsjt_msg))
return result
def parseMessage(self, msg):
m = WsprDecoder.wspr_splitter_pattern.match(msg)
if m is None:
return {}
return {"callsign": m.group(1), "locator": m.group(2)}