604 lines
23 KiB
Python
604 lines
23 KiB
Python
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.chain import Chain
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from csdr.chain.demodulator import BaseDemodulatorChain, FixedIfSampleRateChain, FixedAudioRateChain, HdAudio, SecondaryDemodulator, DialFrequencyReceiver, MetaProvider, SlotFilterChain
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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.fft import FftChain
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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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from io import BytesIO
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import threading
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import re
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import pickle
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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.selectorBuffer = Buffer(Format.COMPLEX_FLOAT)
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self.audioBuffer = None
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self.demodulator = demod
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self.secondaryDemodulator = None
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self.centerFrequency = None
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self.frequencyOffset = None
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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.secondaryFftChain = None
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self.metaWriter = None
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self.secondaryFftWriter = None
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self.secondaryWriter = 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 stop(self):
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super().stop()
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if self.secondaryFftChain is not None:
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self.secondaryFftChain.stop()
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self.secondaryFftChain = None
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if self.secondaryDemodulator is not None:
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self.secondaryDemodulator.stop()
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self.secondaryDemodulator = None
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def _connect(self, w1, w2, buffer: Union[Buffer, None] = None) -> None:
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if w1 is self.selector:
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super()._connect(w1, w2, self.selectorBuffer)
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elif w2 is self.clientAudioChain:
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format = w1.getOutputFormat()
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if self.audioBuffer is None or self.audioBuffer.getFormat() != format:
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self.audioBuffer = Buffer(format)
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if self.secondaryDemodulator is not None and self.secondaryDemodulator.getInputFormat() is not Format.COMPLEX_FLOAT:
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self.secondaryDemodulator.setReader(self.audioBuffer.getReader())
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super()._connect(w1, w2, self.audioBuffer)
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else:
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super()._connect(w1, w2)
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def setDemodulator(self, demodulator: BaseDemodulatorChain):
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if demodulator is self.demodulator:
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return
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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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elif isinstance(self.secondaryDemodulator, FixedAudioRateChain):
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self.selector.setOutputRate(self.secondaryDemodulator.getFixedAudioRate())
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else:
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self.selector.setOutputRate(outputRate)
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self.demodulator.setSampleRate(outputRate)
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if isinstance(self.demodulator, FixedAudioRateChain):
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self.clientAudioChain.setInputRate(self.demodulator.getFixedAudioRate())
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elif isinstance(self.secondaryDemodulator, FixedAudioRateChain):
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self.clientAudioChain.setInputRate(self.secondaryDemodulator.getFixedAudioRate())
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else:
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self.clientAudioChain.setInputRate(outputRate)
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self._updateDialFrequency()
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self._syncSquelch()
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self.clientAudioChain.setClientRate(outputRate)
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if self.metaWriter is not None and isinstance(demodulator, MetaProvider):
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demodulator.setMetaWriter(self.metaWriter)
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def _getSelectorOutputRate(self):
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if isinstance(self.secondaryDemodulator, FixedAudioRateChain):
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if isinstance(self.demodulator, FixedAudioRateChain) and self.demodulator.getFixedAudioRate() != self.secondaryDemodulator.getFixedAudioRate():
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raise ValueError("secondary and primary demodulator chain audio rates do not match!")
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return self.secondaryDemodulator.getFixedAudioRate()
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return self.outputRate
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def setSecondaryDemodulator(self, demod: Union[SecondaryDemodulator, None]):
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if demod is self.secondaryDemodulator:
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return
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if self.secondaryDemodulator is not None:
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self.secondaryDemodulator.stop()
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self.secondaryDemodulator = demod
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rate = self._getSelectorOutputRate()
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self.selector.setOutputRate(rate)
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self.clientAudioChain.setInputRate(rate)
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self.demodulator.setSampleRate(rate)
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self._updateDialFrequency()
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self._syncSquelch()
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if self.secondaryDemodulator is not None:
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if self.secondaryDemodulator.getInputFormat() is Format.COMPLEX_FLOAT:
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self.secondaryDemodulator.setReader(self.selectorBuffer.getReader())
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else:
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self.secondaryDemodulator.setReader(self.audioBuffer.getReader())
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self.secondaryDemodulator.setWriter(self.secondaryWriter)
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if self.secondaryDemodulator is None and self.secondaryFftChain is not None:
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self.secondaryFftChain.stop()
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self.secondaryFftChain = None
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if self.secondaryDemodulator is not None and self.secondaryFftChain is None:
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# TODO eliminate constants
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self.secondaryFftChain = FftChain(self._getSelectorOutputRate(), 2048, 0.3, 9, "adpcm")
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self.secondaryFftChain.setReader(self.selectorBuffer.getReader())
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self.secondaryFftChain.setWriter(self.secondaryFftWriter)
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if self.secondaryFftChain is not None:
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self.secondaryFftChain.setSampleRate(rate)
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def _syncSquelch(self):
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if not self.demodulator.supportsSquelch() or (self.secondaryDemodulator is not None and not self.secondaryDemodulator.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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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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if offset == self.frequencyOffset:
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return
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self.frequencyOffset = offset
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shift = -offset / self.sampleRate
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self.selector.setShiftRate(shift)
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self._updateDialFrequency()
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def setCenterFrequency(self, frequency: int) -> None:
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if frequency == self.centerFrequency:
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return
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self.centerFrequency = frequency
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self._updateDialFrequency()
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def _updateDialFrequency(self):
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if self.centerFrequency is None or self.frequencyOffset is None:
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return
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dialFrequency = self.centerFrequency + self.frequencyOffset
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if isinstance(self.demodulator, DialFrequencyReceiver):
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self.demodulator.setDialFrequency(dialFrequency)
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if isinstance(self.secondaryDemodulator, DialFrequencyReceiver):
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self.secondaryDemodulator.setDialFrequency(dialFrequency)
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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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self._syncSquelch()
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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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self.demodulator.setSampleRate(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 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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# TODO update secondary FFT
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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, MetaProvider):
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self.demodulator.setMetaWriter(self.metaWriter)
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def setSecondaryFftWriter(self, writer: Writer) -> None:
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if writer is self.secondaryFftWriter:
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return
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self.secondaryFftWriter = writer
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if self.secondaryFftChain is not None:
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self.secondaryFftChain.setWriter(writer)
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def setSecondaryWriter(self, writer: Writer) -> None:
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if writer is self.secondaryWriter:
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return
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self.secondaryWriter = writer
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if self.secondaryDemodulator is not None:
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self.secondaryDemodulator.setWriter(writer)
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def setSlotFilter(self, filter: int) -> None:
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if not isinstance(self.demodulator, SlotFilterChain):
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return
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self.demodulator.setSlotFilter(filter)
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def setSecondaryFftSize(self, size: int) -> None:
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# TODO
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pass
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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(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.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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# wire secondary FFT
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# TODO format is different depending on compression
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buffer = Buffer(Format.CHAR)
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self.chain.setSecondaryFftWriter(buffer)
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self.wireOutput("secondary_fft", buffer)
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# wire secondary demodulator
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buffer = Buffer(Format.CHAR)
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self.chain.setSecondaryWriter(buffer)
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# TODO there's multiple outputs depending on the modulation right now
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self.wireOutput("secondary_demod", buffer)
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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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self.props.wireProperty("digimodes_fft_size", self.chain.setSecondaryFftSize),
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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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self.props.wireProperty("center_freq", self.chain.setCenterFrequency),
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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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self.props.wireProperty("dmr_filter", self.chain.setSlotFilter),
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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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]
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# TODO
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# sp.set_temporary_directory(CoreConfig().get_temporary_directory())
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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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self.props.wireProperty("secondary_mod", self.setSecondaryDemodulator),
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self.props.wireProperty("digimodes_fft_size", self.chain.setSecondaryFftSize),
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# TODO
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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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if demod == "nfm":
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from csdr.chain.analog import NFm
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return NFm(self.props["output_rate"])
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elif demod == "wfm":
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from csdr.chain.analog import WFm
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return WFm(self.props["hd_output_rate"], self.props["wfm_deemphasis_tau"])
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elif demod == "am":
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from csdr.chain.analog import Am
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return Am()
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elif demod in ["usb", "lsb", "cw"]:
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from csdr.chain.analog import Ssb
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return Ssb()
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elif demod == "dmr":
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from csdr.chain.digiham import Dmr
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return Dmr(self.props["digital_voice_codecserver"])
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elif demod == "dstar":
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from csdr.chain.digiham import Dstar
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return Dstar(self.props["digital_voice_codecserver"])
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elif demod == "ysf":
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from csdr.chain.digiham import Ysf
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return Ysf(self.props["digital_voice_codecserver"])
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elif demod == "nxdn":
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from csdr.chain.digiham import Nxdn
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return Nxdn(self.props["digital_voice_codecserver"])
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elif demod == "m17":
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from csdr.chain.m17 import M17
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return M17()
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elif demod == "drm":
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from csdr.chain.drm import Drm
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return Drm()
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elif demod == "freedv":
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from csdr.chain.freedv import FreeDV
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return FreeDV()
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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 sendSecondaryConfig(self):
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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.props["output_rate"],
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# TODO
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"secondary_bw": 31.25
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}
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)
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def _getSecondaryDemodulator(self, mod):
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if isinstance(mod, SecondaryDemodulator):
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return mod
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# TODO add remaining modes
|
|
if mod in ["ft8", "wspr", "jt65", "jt9", "ft4", "fst4", "fst4w", "q65"]:
|
|
from csdr.chain.digimodes import AudioChopperDemodulator
|
|
from owrx.wsjt import WsjtParser
|
|
return AudioChopperDemodulator(mod, WsjtParser())
|
|
elif mod == "js8":
|
|
from csdr.chain.digimodes import AudioChopperDemodulator
|
|
from owrx.js8 import Js8Parser
|
|
return AudioChopperDemodulator(mod, Js8Parser())
|
|
elif mod == "packet":
|
|
from csdr.chain.digimodes import PacketDemodulator
|
|
return PacketDemodulator()
|
|
elif mod == "pocsag":
|
|
from csdr.chain.digimodes import PocsagDemodulator
|
|
return PocsagDemodulator()
|
|
return None
|
|
|
|
def setSecondaryDemodulator(self, mod):
|
|
demodulator = self._getSecondaryDemodulator(mod)
|
|
if not demodulator:
|
|
self.chain.setSecondaryDemodulator(None)
|
|
else:
|
|
self.sendSecondaryConfig()
|
|
self.chain.setSecondaryDemodulator(demodulator)
|
|
|
|
def setAudioCompression(self, comp):
|
|
try:
|
|
self.chain.setAudioCompression(comp)
|
|
except ValueError:
|
|
# wrong output format... need to re-wire
|
|
buffer = Buffer(self.chain.getOutputFormat())
|
|
self.chain.setWriter(buffer)
|
|
# TODO check if this is hd audio
|
|
self.wireOutput("audio", buffer)
|
|
|
|
def start(self):
|
|
if self.sdrSource.isAvailable():
|
|
self.chain.setReader(self.sdrSource.getBuffer().getReader())
|
|
else:
|
|
self.startOnAvailable = True
|
|
|
|
def unwireOutput(self, t: str):
|
|
if t in self.readers:
|
|
self.readers[t].stop()
|
|
del self.readers[t]
|
|
|
|
def wireOutput(self, t: str, buffer: Buffer):
|
|
logger.debug("wiring new output of type %s", t)
|
|
writers = {
|
|
"audio": self.handler.write_dsp_data,
|
|
"hd_audio": self.handler.write_hd_audio,
|
|
"smeter": self.handler.write_s_meter_level,
|
|
"secondary_fft": self.handler.write_secondary_fft,
|
|
"secondary_demod": self._unpickle(self.handler.write_secondary_demod),
|
|
"meta": self._unpickle(self.handler.write_metadata),
|
|
}
|
|
|
|
write = writers[t]
|
|
|
|
self.unwireOutput(t)
|
|
|
|
reader = buffer.getReader()
|
|
self.readers[t] = reader
|
|
threading.Thread(target=self.chain.pump(reader.read, write), name="dsp_pump_{}".format(t)).start()
|
|
|
|
def _unpickle(self, callback):
|
|
def unpickler(data):
|
|
io = BytesIO(data.tobytes())
|
|
try:
|
|
while True:
|
|
callback(pickle.load(io))
|
|
except EOFError:
|
|
pass
|
|
|
|
return unpickler
|
|
|
|
def stop(self):
|
|
if self.chain:
|
|
self.chain.stop()
|
|
self.chain = None
|
|
for reader in self.readers.values():
|
|
reader.stop()
|
|
self.readers = {}
|
|
|
|
self.startOnAvailable = False
|
|
self.sdrSource.removeClient(self)
|
|
for sub in self.subscriptions:
|
|
sub.cancel()
|
|
self.subscriptions = []
|
|
|
|
def setProperties(self, props):
|
|
for k, v in props.items():
|
|
self.setProperty(k, v)
|
|
|
|
def setProperty(self, prop, value):
|
|
self.localProps[prop] = value
|
|
|
|
def getClientClass(self) -> SdrClientClass:
|
|
return SdrClientClass.USER
|
|
|
|
def onStateChange(self, state: SdrSourceState):
|
|
if state is SdrSourceState.RUNNING:
|
|
logger.debug("received STATE_RUNNING, attempting DspSource restart")
|
|
if self.startOnAvailable:
|
|
self.chain.setReader(self.sdrSource.getBuffer().getReader())
|
|
self.startOnAvailable = False
|
|
elif state is SdrSourceState.STOPPING:
|
|
logger.debug("received STATE_STOPPING, shutting down DspSource")
|
|
self.stop()
|
|
|
|
def onFail(self):
|
|
logger.debug("received onFail(), shutting down DspSource")
|
|
self.stop()
|
|
|
|
def onShutdown(self):
|
|
self.stop()
|