366 lines
11 KiB
Python
366 lines
11 KiB
Python
from datetime import datetime, timezone
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from owrx.map import Map, LocatorLocation
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import re
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from owrx.metrics import Metrics, CounterMetric
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from owrx.reporting import ReportingEngine
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from owrx.parser import Parser
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from owrx.audio import AudioChopperProfile
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from abc import ABC, ABCMeta, abstractmethod
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from owrx.config import Config
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from enum import Enum
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import logging
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logger = logging.getLogger(__name__)
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class WsjtProfile(AudioChopperProfile, metaclass=ABCMeta):
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def decoding_depth(self):
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pm = Config.get()
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mode = self.getMode().lower()
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# mode-specific setting?
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if "wsjt_decoding_depths" in pm and mode in pm["wsjt_decoding_depths"]:
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return pm["wsjt_decoding_depths"][mode]
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# return global default
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if "wsjt_decoding_depth" in pm:
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return pm["wsjt_decoding_depth"]
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# default when no setting is provided
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return 3
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def getTimestampFormat(self):
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if self.getInterval() < 60:
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return "%H%M%S"
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return "%H%M"
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def getFileTimestampFormat(self):
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return "%y%m%d_" + self.getTimestampFormat()
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@abstractmethod
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def getMode(self):
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pass
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class Ft8Profile(WsjtProfile):
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def getInterval(self):
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return 15
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def decoder_commandline(self, file):
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return ["jt9", "--ft8", "-d", str(self.decoding_depth()), file]
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def getMode(self):
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return "FT8"
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class WsprProfile(WsjtProfile):
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def getInterval(self):
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return 120
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def decoder_commandline(self, file):
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cmd = ["wsprd"]
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if self.decoding_depth() > 1:
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cmd += ["-d"]
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cmd += [file]
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return cmd
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def getMode(self):
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return "WSPR"
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class Jt65Profile(WsjtProfile):
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def getInterval(self):
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return 60
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def decoder_commandline(self, file):
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return ["jt9", "--jt65", "-d", str(self.decoding_depth()), file]
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def getMode(self):
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return "JT65"
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class Jt9Profile(WsjtProfile):
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def getInterval(self):
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return 60
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def decoder_commandline(self, file):
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return ["jt9", "--jt9", "-d", str(self.decoding_depth()), file]
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def getMode(self):
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return "JT9"
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class Ft4Profile(WsjtProfile):
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def getInterval(self):
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return 7.5
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def decoder_commandline(self, file):
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return ["jt9", "--ft4", "-d", str(self.decoding_depth()), file]
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def getMode(self):
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return "FT4"
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class Fst4Profile(WsjtProfile):
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availableIntervals = [15, 30, 60, 120, 300, 900, 1800]
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def __init__(self, interval):
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self.interval = interval
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def getInterval(self):
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return self.interval
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def decoder_commandline(self, file):
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return ["jt9", "--fst4", "-p", str(self.interval), "-d", str(self.decoding_depth()), file]
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def getMode(self):
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return "FST4"
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@staticmethod
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def getEnabledProfiles():
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config = Config.get()
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profiles = config["fst4_enabled_intervals"] if "fst4_enabled_intervals" in config else []
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return [Fst4Profile(i) for i in profiles if i in Fst4Profile.availableIntervals]
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class Fst4wProfile(WsjtProfile):
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availableIntervals = [120, 300, 900, 1800]
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def __init__(self, interval):
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self.interval = interval
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def getInterval(self):
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return self.interval
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def decoder_commandline(self, file):
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return ["jt9", "--fst4w", "-p", str(self.interval), "-d", str(self.decoding_depth()), file]
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def getMode(self):
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return "FST4W"
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@staticmethod
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def getEnabledProfiles():
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config = Config.get()
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profiles = config["fst4w_enabled_intervals"] if "fst4w_enabled_intervals" in config else []
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return [Fst4wProfile(i) for i in profiles if i in Fst4wProfile.availableIntervals]
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class Q65Mode(Enum):
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# value is the bandwidth multiplier according to https://physics.princeton.edu/pulsar/k1jt/Q65_Quick_Start.pdf
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A = 1
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B = 2
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C = 4
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D = 8
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E = 16
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def is_available(self, interval: "Q65Interval"):
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return interval.is_available(self)
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class Q65Interval(Enum):
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# (interval, occupied bandwidth in mode "A")
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# according to https://physics.princeton.edu/pulsar/k1jt/Q65_Quick_Start.pdf
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INTERVAL_15 = (15, 433)
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INTERVAL_30 = (30, 217)
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INTERVAL_60 = (60, 108)
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INTERVAL_120 = (120, 49)
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INTERVAL_300 = (300, 19)
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def __new__(cls, *args, **kwargs):
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interval, occupied_bandwidth = args
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obj = object.__new__(cls)
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obj._value_ = interval
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obj.occupied_bandwidth = occupied_bandwidth
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return obj
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def is_available(self, mode: Q65Mode):
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# total bandwidth must not exceed the typical SSB bandwidth
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return self.occupied_bandwidth * mode.value < 2700
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class Q65Profile(WsjtProfile):
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def __init__(self, interval: Q65Interval, mode: Q65Mode):
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self.interval = interval.value
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self.mode = mode
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def getMode(self):
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return "Q65"
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def getInterval(self):
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return self.interval
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def decoder_commandline(self, file):
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return ["jt9", "--q65", "-p", str(self.interval), "-b", self.mode.name, "-d", str(self.decoding_depth()), file]
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@staticmethod
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def getEnabledProfiles():
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config = Config.get()
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profiles = config["q65_enabled_combinations"] if "q65_enabled_combinations" in config else []
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def buildProfile(modestring):
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try:
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mode = Q65Mode[modestring[0]]
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interval = Q65Interval(int(modestring[1:]))
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if interval.is_available(mode):
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return Q65Profile(interval, mode)
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except (ValueError, KeyError):
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pass
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logger.warning('"%s" is not a valid Q65 mode, or an invalid mode string, ignoring', modestring)
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return None
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mapped = [buildProfile(m) for m in profiles]
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return [p for p in mapped if p is not None]
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class WsjtParser(Parser):
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def parse(self, messages):
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for data in messages:
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try:
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profile, freq, raw_msg = data
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self.setDialFrequency(freq)
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msg = raw_msg.decode().rstrip()
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# known debug messages we know to skip
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if msg.startswith("<DecodeFinished>"):
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return
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if msg.startswith(" EOF on input file"):
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return
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mode = profile.getMode()
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if mode in ["WSPR", "FST4W"]:
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messageParser = BeaconMessageParser()
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else:
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messageParser = QsoMessageParser()
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if mode == "WSPR":
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decoder = WsprDecoder(profile, messageParser)
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else:
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decoder = Jt9Decoder(profile, messageParser)
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out = decoder.parse(msg, freq)
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if isinstance(profile, Q65Profile) and not out["msg"]:
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# all efforts in vain, it's just a potential signal indicator
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return
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out["mode"] = mode
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out["interval"] = profile.getInterval()
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self.pushDecode(mode)
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if "callsign" in out and "locator" in out:
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Map.getSharedInstance().updateLocation(
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out["callsign"], LocatorLocation(out["locator"]), mode, self.band
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)
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ReportingEngine.getSharedInstance().spot(out)
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self.handler.write_wsjt_message(out)
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except Exception:
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logger.exception("Exception while parsing wsjt message")
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def pushDecode(self, mode):
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metrics = Metrics.getSharedInstance()
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band = "unknown"
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if self.band is not None:
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band = self.band.getName()
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if band is None:
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band = "unknown"
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if mode is None:
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mode = "unknown"
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name = "wsjt.decodes.{band}.{mode}".format(band=band, mode=mode)
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metric = metrics.getMetric(name)
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if metric is None:
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metric = CounterMetric()
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metrics.addMetric(name, metric)
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metric.inc()
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class Decoder(ABC):
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def __init__(self, profile, messageParser):
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self.profile = profile
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self.messageParser = messageParser
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def parse_timestamp(self, instring):
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dateformat = self.profile.getTimestampFormat()
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remain = instring[len(dateformat) + 1 :]
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try:
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ts = datetime.strptime(instring[0 : len(dateformat)], dateformat)
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return remain, int(
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datetime.combine(datetime.utcnow().date(), ts.time()).replace(tzinfo=timezone.utc).timestamp() * 1000
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)
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except ValueError:
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return remain, None
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@abstractmethod
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def parse(self, msg, dial_freq):
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pass
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class MessageParser(ABC):
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@abstractmethod
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def parse(self, msg):
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pass
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# Used in QSO-style modes (FT8, FT4, FST4)
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class QsoMessageParser(MessageParser):
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locator_pattern = re.compile(".*\\s([A-Z0-9/]{2,})(\\sR)?\\s([A-R]{2}[0-9]{2})$")
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def parse(self, msg):
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m = QsoMessageParser.locator_pattern.match(msg)
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if m is None:
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return {}
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# this is a valid locator in theory, but it's somewhere in the arctic ocean, near the north pole, so it's very
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# likely this just means roger roger goodbye.
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if m.group(3) == "RR73":
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return {"callsign": m.group(1)}
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return {"callsign": m.group(1), "locator": m.group(3)}
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# Used in propagation reporting / beacon modes (WSPR / FST4W)
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class BeaconMessageParser(MessageParser):
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wspr_splitter_pattern = re.compile("([A-Z0-9/]*)\\s([A-R]{2}[0-9]{2})\\s([0-9]+)")
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def parse(self, msg):
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m = BeaconMessageParser.wspr_splitter_pattern.match(msg)
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if m is None:
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return {}
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return {"callsign": m.group(1), "locator": m.group(2), "dbm": m.group(3)}
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class Jt9Decoder(Decoder):
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def parse(self, msg, dial_freq):
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# ft8 sample
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# '222100 -15 -0.0 508 ~ CQ EA7MJ IM66'
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# jt65 sample
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# '2352 -7 0.4 1801 # R0WAS R2ABM KO85'
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# '0003 -4 0.4 1762 # CQ R2ABM KO85'
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# fst4 sample
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# '**** -23 0.6 3023 ` <...> <...> R 591631 BI53PV'
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msg, timestamp = self.parse_timestamp(msg)
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wsjt_msg = msg[17:53].strip()
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result = {
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"timestamp": timestamp,
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"db": float(msg[0:3]),
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"dt": float(msg[4:8]),
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"freq": dial_freq + int(msg[9:13]),
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"msg": wsjt_msg,
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}
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result.update(self.messageParser.parse(wsjt_msg))
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return result
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class WsprDecoder(Decoder):
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def parse(self, msg, dial_freq):
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# wspr sample
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# '2600 -24 0.4 0.001492 -1 G8AXA JO01 33'
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# '0052 -29 2.6 0.001486 0 G02CWT IO92 23'
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msg, timestamp = self.parse_timestamp(msg)
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wsjt_msg = msg[24:].strip()
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result = {
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"timestamp": timestamp,
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"db": float(msg[0:3]),
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"dt": float(msg[4:8]),
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"freq": dial_freq + int(float(msg[10:20]) * 1e6),
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"drift": int(msg[20:23]),
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"msg": wsjt_msg,
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}
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result.update(self.messageParser.parse(wsjt_msg))
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return result
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