436 lines
16 KiB
Python
436 lines
16 KiB
Python
from owrx.meta import MetaParser
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from owrx.wsjt import WsjtParser
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from owrx.js8 import Js8Parser
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from owrx.aprs import AprsParser
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from owrx.pocsag import PocsagParser
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from owrx.source import SdrSourceEventClient, SdrSourceState, SdrClientClass
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from owrx.property import PropertyStack, PropertyLayer, PropertyValidator
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from owrx.property.validators import OrValidator, RegexValidator, BoolValidator
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from owrx.modes import Modes
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from csdr.output import Output
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from csdr.chain import Chain
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from csdr.chain.demodulator import BaseDemodulatorChain, FixedIfSampleRateChain, FixedAudioRateChain, HdAudio
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from csdr.chain.selector import Selector
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from csdr.chain.clientaudio import ClientAudioChain
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from csdr.chain.analog import NFm, WFm, Am, Ssb
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from csdr.chain.digiham import DigihamChain, Dmr, Dstar, Nxdn, Ysf
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from pycsdr.modules import Buffer, Writer
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from pycsdr.types import Format
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from typing import Union
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import threading
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import re
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import logging
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logger = logging.getLogger(__name__)
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class ClientDemodulatorChain(Chain):
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def __init__(self, demod: BaseDemodulatorChain, sampleRate: int, outputRate: int, hdOutputRate: int, audioCompression: str):
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self.sampleRate = sampleRate
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self.outputRate = outputRate
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self.hdOutputRate = hdOutputRate
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self.selector = Selector(sampleRate, outputRate, 0.0)
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self.selector.setBandpass(-4000, 4000)
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self.demodulator = demod
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inputRate = demod.getFixedAudioRate() if isinstance(demod, FixedAudioRateChain) else outputRate
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oRate = hdOutputRate if isinstance(demod, HdAudio) else outputRate
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self.clientAudioChain = ClientAudioChain(demod.getOutputFormat(), inputRate, oRate, audioCompression)
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self.metaWriter = None
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self.squelchLevel = -150
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super().__init__([self.selector, self.demodulator, self.clientAudioChain])
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def setDemodulator(self, demodulator: BaseDemodulatorChain):
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try:
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self.clientAudioChain.setFormat(demodulator.getOutputFormat())
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except ValueError:
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# this will happen if the new format does not match the current demodulator.
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# it's expected and should be mended when swapping out the demodulator in the next step
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pass
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self.replace(1, demodulator)
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if self.demodulator is not None:
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self.demodulator.stop()
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self.demodulator = demodulator
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outputRate = self.hdOutputRate if isinstance(self.demodulator, HdAudio) else self.outputRate
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if isinstance(self.demodulator, FixedIfSampleRateChain):
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self.selector.setOutputRate(self.demodulator.getFixedIfSampleRate())
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else:
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self.selector.setOutputRate(outputRate)
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if isinstance(self.demodulator, FixedAudioRateChain):
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self.clientAudioChain.setInputRate(self.demodulator.getFixedAudioRate())
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else:
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self.clientAudioChain.setInputRate(outputRate)
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if not demodulator.supportsSquelch():
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self.selector.setSquelchLevel(-150)
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else:
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self.selector.setSquelchLevel(self.squelchLevel)
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self.clientAudioChain.setClientRate(outputRate)
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if self.metaWriter is not None and isinstance(demodulator, DigihamChain):
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demodulator.setMetaWriter(self.metaWriter)
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def setLowCut(self, lowCut):
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self.selector.setLowCut(lowCut)
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def setHighCut(self, highCut):
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self.selector.setHighCut(highCut)
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def setBandpass(self, lowCut, highCut):
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self.selector.setBandpass(lowCut, highCut)
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def setFrequencyOffset(self, offset: int) -> None:
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shift = -offset / self.sampleRate
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self.selector.setShiftRate(shift)
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def setAudioCompression(self, compression: str) -> None:
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self.clientAudioChain.setAudioCompression(compression)
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def setSquelchLevel(self, level: float) -> None:
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if level == self.squelchLevel:
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return
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self.squelchLevel = level
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if not self.demodulator.supportsSquelch():
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return
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self.selector.setSquelchLevel(level)
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def setOutputRate(self, outputRate) -> None:
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if outputRate == self.outputRate:
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return
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self.outputRate = outputRate
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if isinstance(self.demodulator, HdAudio):
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return
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if not isinstance(self.demodulator, FixedIfSampleRateChain):
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self.selector.setOutputRate(outputRate)
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if not isinstance(self.demodulator, FixedAudioRateChain):
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self.clientAudioChain.setClientRate(outputRate)
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def setHdOutputRate(self, outputRate) -> None:
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if outputRate == self.hdOutputRate:
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return
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self.hdOutputRate = outputRate
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if not isinstance(self.demodulator, HdAudio):
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return
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if not isinstance(self.demodulator, FixedIfSampleRateChain):
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self.selector.setOutputRate(outputRate)
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if not isinstance(self.demodulator, FixedAudioRateChain):
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self.clientAudioChain.setClientRate(outputRate)
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def setPowerWriter(self, writer: Writer) -> None:
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self.selector.setPowerWriter(writer)
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def setMetaWriter(self, writer: Writer) -> None:
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if writer is self.metaWriter:
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return
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self.metaWriter = writer
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if isinstance(self.demodulator, DigihamChain):
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self.demodulator.setMetaWriter(self.metaWriter)
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def setSampleRate(self, sampleRate: int) -> None:
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if sampleRate == self.sampleRate:
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return
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self.sampleRate = sampleRate
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self.selector.setInputRate(sampleRate)
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class ModulationValidator(OrValidator):
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"""
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This validator only allows alphanumeric characters and numbers, but no spaces or special characters
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"""
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def __init__(self):
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super().__init__(BoolValidator(), RegexValidator(re.compile("^[a-z0-9]+$")))
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class DspManager(Output, SdrSourceEventClient):
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def __init__(self, handler, sdrSource):
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self.handler = handler
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self.sdrSource = sdrSource
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self.parsers = {
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"meta": MetaParser(self.handler),
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"wsjt_demod": WsjtParser(self.handler),
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"packet_demod": AprsParser(self.handler),
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"pocsag_demod": PocsagParser(self.handler),
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"js8_demod": Js8Parser(self.handler),
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}
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self.props = PropertyStack()
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# local demodulator properties not forwarded to the sdr
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# ensure strict validation since these can be set from the client
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# and are used to build executable commands
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validators = {
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"output_rate": "int",
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"hd_output_rate": "int",
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"squelch_level": "num",
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"secondary_mod": ModulationValidator(),
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"low_cut": "num",
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"high_cut": "num",
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"offset_freq": "int",
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"mod": ModulationValidator(),
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"secondary_offset_freq": "int",
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"dmr_filter": "int",
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}
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self.localProps = PropertyValidator(PropertyLayer().filter(*validators.keys()), validators)
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self.props.addLayer(0, self.localProps)
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# properties that we inherit from the sdr
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self.props.addLayer(
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1,
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self.sdrSource.getProps().filter(
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"audio_compression",
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"fft_compression",
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"digimodes_fft_size",
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"samp_rate",
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"center_freq",
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"start_mod",
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"start_freq",
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"wfm_deemphasis_tau",
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"digital_voice_codecserver",
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),
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)
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# TODO wait for the rate to come from the client
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if "output_rate" not in self.props:
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self.props["output_rate"] = 12000
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if "hd_output_rate" not in self.props:
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self.props["hd_output_rate"] = 48000
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self.chain = ClientDemodulatorChain(
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self._getDemodulator("nfm"),
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self.props["samp_rate"],
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self.props["output_rate"],
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self.props["hd_output_rate"],
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self.props["audio_compression"]
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)
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self.readers = {}
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# wire audio output
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buffer = Buffer(self.chain.getOutputFormat())
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self.chain.setWriter(buffer)
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# TODO check for hd audio
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self.wireOutput("audio", buffer)
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# wire power level output
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buffer = Buffer(Format.FLOAT)
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self.chain.setPowerWriter(buffer)
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self.wireOutput("smeter", buffer)
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# wire meta output
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buffer = Buffer(Format.CHAR)
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self.chain.setMetaWriter(buffer)
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self.wireOutput("meta", buffer)
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def set_dial_freq(changes):
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if (
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"center_freq" not in self.props
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or self.props["center_freq"] is None
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or "offset_freq" not in self.props
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or self.props["offset_freq"] is None
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):
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return
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freq = self.props["center_freq"] + self.props["offset_freq"]
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for parser in self.parsers.values():
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parser.setDialFrequency(freq)
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if "start_mod" in self.props:
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self.setDemodulator(self.props["start_mod"])
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mode = Modes.findByModulation(self.props["start_mod"])
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if mode and mode.bandpass:
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bpf = [mode.bandpass.low_cut, mode.bandpass.high_cut]
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self.chain.setBandpass(*bpf)
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if "start_freq" in self.props and "center_freq" in self.props:
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self.chain.setFrequencyOffset(self.props["start_freq"] - self.props["center_freq"])
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else:
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self.chain.setFrequencyOffset(0)
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self.subscriptions = [
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self.props.wireProperty("audio_compression", self.setAudioCompression),
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# probably unused:
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# self.props.wireProperty("fft_compression", self.dsp.set_fft_compression),
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# TODO
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# self.props.wireProperty("digimodes_fft_size", self.dsp.set_secondary_fft_size),
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self.props.wireProperty("samp_rate", self.chain.setSampleRate),
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self.props.wireProperty("output_rate", self.chain.setOutputRate),
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self.props.wireProperty("hd_output_rate", self.chain.setHdOutputRate),
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self.props.wireProperty("offset_freq", self.chain.setFrequencyOffset),
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# TODO check, this was used for wsjt-x
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# self.props.wireProperty("center_freq", self.dsp.set_center_freq),
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self.props.wireProperty("squelch_level", self.chain.setSquelchLevel),
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self.props.wireProperty("low_cut", self.chain.setLowCut),
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self.props.wireProperty("high_cut", self.chain.setHighCut),
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self.props.wireProperty("mod", self.setDemodulator),
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# TODO
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# self.props.wireProperty("dmr_filter", self.dsp.set_dmr_filter),
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# TODO
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# self.props.wireProperty("wfm_deemphasis_tau", self.dsp.set_wfm_deemphasis_tau),
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# TODO
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# self.props.wireProperty("digital_voice_codecserver", self.dsp.set_codecserver),
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self.props.filter("center_freq", "offset_freq").wire(set_dial_freq),
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]
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# TODO
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# sp.set_temporary_directory(CoreConfig().get_temporary_directory())
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def send_secondary_config(*args):
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self.handler.write_secondary_dsp_config(
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{
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"secondary_fft_size": self.props["digimodes_fft_size"],
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"if_samp_rate": self.dsp.if_samp_rate(),
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"secondary_bw": self.dsp.secondary_bw(),
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}
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)
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def set_secondary_mod(mod):
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if mod == False:
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mod = None
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self.dsp.set_secondary_demodulator(mod)
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if mod is not None:
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send_secondary_config()
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self.subscriptions += [
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# TODO
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# self.props.wireProperty("secondary_mod", set_secondary_mod),
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# self.props.wireProperty("digimodes_fft_size", send_secondary_config),
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# self.props.wireProperty("secondary_offset_freq", self.dsp.set_secondary_offset_freq),
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]
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self.startOnAvailable = False
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self.sdrSource.addClient(self)
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super().__init__()
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def _getDemodulator(self, demod: Union[str, BaseDemodulatorChain]):
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if isinstance(demod, BaseDemodulatorChain):
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return demod
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# TODO: move this to Modes
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demodChain = None
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if demod == "nfm":
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demodChain = NFm(self.props["output_rate"])
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elif demod == "wfm":
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demodChain = WFm(self.props["hd_output_rate"], self.props["wfm_deemphasis_tau"])
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elif demod == "am":
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demodChain = Am()
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elif demod in ["usb", "lsb", "cw"]:
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demodChain = Ssb()
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elif demod == "dmr":
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demodChain = Dmr(self.props["digital_voice_codecserver"])
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elif demod == "dstar":
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demodChain = Dstar(self.props["digital_voice_codecserver"])
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elif demod == "ysf":
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demodChain = Ysf(self.props["digital_voice_codecserver"])
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elif demod == "nxdn":
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demodChain = Nxdn(self.props["digital_voice_codecserver"])
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return demodChain
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def setDemodulator(self, mod):
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demodulator = self._getDemodulator(mod)
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if demodulator is None:
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raise ValueError("unsupported demodulator: {}".format(mod))
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self.chain.setDemodulator(demodulator)
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# re-wire the audio to the correct client API
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buffer = Buffer(self.chain.getOutputFormat())
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self.chain.setWriter(buffer)
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if isinstance(demodulator, HdAudio):
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self.wireOutput("hd_audio", buffer)
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else:
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self.wireOutput("audio", buffer)
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def setAudioCompression(self, comp):
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try:
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self.chain.setAudioCompression(comp)
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except ValueError:
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# wrong output format... need to re-wire
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buffer = Buffer(self.chain.getOutputFormat())
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self.chain.setWriter(buffer)
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# TODO check if this is hd audio
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self.wireOutput("audio", buffer)
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def start(self):
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if self.sdrSource.isAvailable():
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self.chain.setReader(self.sdrSource.getBuffer().getReader())
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else:
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self.startOnAvailable = True
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def unwireOutput(self, t: str):
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if t in self.readers:
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self.readers[t].stop()
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del self.readers[t]
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def wireOutput(self, t: str, buffer: Buffer):
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logger.debug("wiring new output of type %s", t)
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writers = {
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"audio": self.handler.write_dsp_data,
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"hd_audio": self.handler.write_hd_audio,
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"smeter": self.handler.write_s_meter_level,
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"secondary_fft": self.handler.write_secondary_fft,
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"secondary_demod": self.handler.write_secondary_demod,
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}
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for demod, parser in self.parsers.items():
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writers[demod] = parser.parse
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write = writers[t]
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self.unwireOutput(t)
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reader = buffer.getReader()
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self.readers[t] = reader
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threading.Thread(target=self.pump(reader.read, write), name="dsp_pump_{}".format(t)).start()
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def stop(self):
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self.chain.stop()
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self.chain = None
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for reader in self.readers.values():
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reader.stop()
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self.readers = {}
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self.startOnAvailable = False
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self.sdrSource.removeClient(self)
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for sub in self.subscriptions:
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sub.cancel()
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self.subscriptions = []
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def setProperties(self, props):
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for k, v in props.items():
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self.setProperty(k, v)
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def setProperty(self, prop, value):
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self.localProps[prop] = value
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def getClientClass(self) -> SdrClientClass:
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return SdrClientClass.USER
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def onStateChange(self, state: SdrSourceState):
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if state is SdrSourceState.RUNNING:
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logger.debug("received STATE_RUNNING, attempting DspSource restart")
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if self.startOnAvailable:
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self.chain.setReader(self.sdrSource.getBuffer().getReader())
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self.startOnAvailable = False
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elif state is SdrSourceState.STOPPING:
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logger.debug("received STATE_STOPPING, shutting down DspSource")
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self.stop()
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def onFail(self):
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logger.debug("received onFail(), shutting down DspSource")
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self.stop()
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def onShutdown(self):
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self.stop()
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