85 lines
2.6 KiB
Python
85 lines
2.6 KiB
Python
from csdr.chain.demodulator import BaseDemodulatorChain, FixedAudioRateChain, FixedIfSampleRateChain
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from pycsdr.modules import FmDemod, Agc, Writer
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from pycsdr.types import Format
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from digiham.modules import DstarDecoder, DcBlock, FskDemodulator, GfskDemodulator, DigitalVoiceFilter, MbeSynthesizer, NarrowRrcFilter, NxdnDecoder, DmrDecoder, WideRrcFilter, YsfDecoder
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from digiham.ambe import Modes
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class DigihamChain(BaseDemodulatorChain, FixedIfSampleRateChain, FixedAudioRateChain):
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def __init__(self, fskDemodulator, decoder, mbeMode, filter=None, codecserver: str = ""):
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self.decoder = decoder
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if codecserver is None:
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codecserver = ""
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agc = Agc(Format.SHORT)
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agc.setMaxGain(30)
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agc.setInitialGain(3)
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workers = [FmDemod(), DcBlock()]
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if filter is not None:
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workers += [filter]
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workers += [
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fskDemodulator,
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decoder,
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MbeSynthesizer(mbeMode, codecserver),
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DigitalVoiceFilter(),
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agc
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]
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super().__init__(workers)
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def getFixedIfSampleRate(self):
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return 48000
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def getFixedAudioRate(self):
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return 8000
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def setMetaWriter(self, writer: Writer):
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self.decoder.setMetaWriter(writer)
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def supportsSquelch(self):
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return False
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class Dstar(DigihamChain):
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def __init__(self, codecserver: str = ""):
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super().__init__(
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fskDemodulator=FskDemodulator(samplesPerSymbol=10),
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decoder=DstarDecoder(),
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mbeMode=Modes.DStarMode,
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codecserver=codecserver
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)
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class Nxdn(DigihamChain):
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def __init__(self, codecserver: str = ""):
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super().__init__(
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fskDemodulator=GfskDemodulator(samplesPerSymbol=20),
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decoder=NxdnDecoder(),
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mbeMode=Modes.NxdnMode,
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filter=NarrowRrcFilter(),
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codecserver=codecserver
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)
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class Dmr(DigihamChain):
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def __init__(self, codecserver: str = ""):
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super().__init__(
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fskDemodulator=GfskDemodulator(samplesPerSymbol=10),
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decoder=DmrDecoder(),
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mbeMode=Modes.DmrMode,
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filter=WideRrcFilter(),
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codecserver=codecserver,
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)
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def setSlotFilter(self, slotFilter: int) -> None:
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self.decoder.setSlotFilter(slotFilter)
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class Ysf(DigihamChain):
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def __init__(self, codecserver: str = ""):
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super().__init__(
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fskDemodulator=GfskDemodulator(samplesPerSymbol=10),
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decoder=YsfDecoder(),
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mbeMode=Modes.YsfMode,
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filter=WideRrcFilter(),
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codecserver=codecserver
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)
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