openwebrx-clone/owrx/modes.py

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from owrx.feature import FeatureDetector
from functools import reduce
class Bandpass(object):
def __init__(self, low_cut, high_cut):
self.low_cut = low_cut
self.high_cut = high_cut
class Mode(object):
def __init__(self, modulation, name, bandpass: Bandpass = None, requirements=None, service=False, squelch=True):
self.modulation = modulation
self.name = name
self.requirements = requirements if requirements is not None else []
self.service = service
self.bandpass = bandpass
self.squelch = squelch
def is_available(self):
fd = FeatureDetector()
return reduce(lambda a, b: a and b, [fd.is_available(r) for r in self.requirements], True)
def is_service(self):
return self.service
class AnalogMode(Mode):
pass
class DigitalMode(Mode):
def __init__(
self, modulation, name, underlying, bandpass: Bandpass = None, requirements=None, service=False, squelch=True
):
super().__init__(modulation, name, bandpass, requirements, service, squelch)
self.underlying = underlying
class Modes(object):
mappings = [
AnalogMode("nfm", "FM", bandpass=Bandpass(-4000, 4000)),
AnalogMode("am", "AM", bandpass=Bandpass(-4000, 4000)),
AnalogMode("lsb", "LSB", bandpass=Bandpass(-3000, -300)),
AnalogMode("usb", "USB", bandpass=Bandpass(300, 3000)),
AnalogMode("cw", "CW", bandpass=Bandpass(700, 900)),
AnalogMode("dmr", "DMR", bandpass=Bandpass(-4000, 4000), requirements=["digital_voice_digiham"], squelch=False),
AnalogMode("dstar", "DStar", bandpass=Bandpass(-3250, 3250), requirements=["digital_voice_dsd"], squelch=False),
AnalogMode("nxdn", "NXDN", bandpass=Bandpass(-3250, 3250), requirements=["digital_voice_dsd"], squelch=False),
AnalogMode("ysf", "YSF", bandpass=Bandpass(-4000, 4000), requirements=["digital_voice_digiham"], squelch=False),
DigitalMode("bpsk31", "BPSK31", underlying=["usb"]),
DigitalMode("bpsk63", "BPSK63", underlying=["usb"]),
DigitalMode("ft8", "FT8", underlying=["usb"], requirements=["wsjt-x"], service=True),
DigitalMode("ft4", "FT4", underlying=["usb"], requirements=["wsjt-x"], service=True),
DigitalMode("jt65", "JT65", underlying=["usb"], requirements=["wsjt-x"], service=True),
DigitalMode("jt9", "JT9", underlying=["usb"], requirements=["wsjt-x"], service=True),
DigitalMode(
"wspr", "WSPR", underlying=["usb"], bandpass=Bandpass(1350, 1650), requirements=["wsjt-x"], service=True
),
DigitalMode("js8", "JS8Call", underlying=["usb"], requirements=["js8call"], service=True),
DigitalMode(
"packet", "Packet", underlying=["nfm", "usb", "lsb"], requirements=["packet"], service=True, squelch=False
),
DigitalMode(
"pocsag",
"Pocsag",
underlying=["nfm"],
bandpass=Bandpass(-6000, 6000),
requirements=["pocsag"],
squelch=False,
),
]
@staticmethod
def getModes():
return Modes.mappings
@staticmethod
def getAvailableModes():
return [m for m in Modes.getModes() if m.is_available()]
@staticmethod
def getAvailableServices():
return [m for m in Modes.getAvailableModes() if m.is_service()]
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@staticmethod
def findByModulation(modulation):
modes = [m for m in Modes.getAvailableModes() if m.modulation == modulation]
if modes:
return modes[0]