222 lines
8.0 KiB
Python
222 lines
8.0 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 owrx.config.core import CoreConfig
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from csdr.output import Output
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from csdr import Dsp
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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 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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self.dsp = Dsp(self)
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self.dsp.nc_port = self.sdrSource.getPort()
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def set_low_cut(cut):
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bpf = self.dsp.get_bpf()
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bpf[0] = cut
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self.dsp.set_bpf(*bpf)
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def set_high_cut(cut):
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bpf = self.dsp.get_bpf()
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bpf[1] = cut
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self.dsp.set_bpf(*bpf)
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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.dsp.set_demodulator(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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self.dsp.set_bpf(mode.bandpass.low_cut, mode.bandpass.high_cut)
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else:
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self.dsp.set_bpf(-4000, 4000)
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if "start_freq" in self.props and "center_freq" in self.props:
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self.dsp.set_offset_freq(self.props["start_freq"] - self.props["center_freq"])
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else:
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self.dsp.set_offset_freq(0)
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self.subscriptions = [
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self.props.wireProperty("audio_compression", self.dsp.set_audio_compression),
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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.dsp.set_secondary_fft_size),
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self.props.wireProperty("samp_rate", self.dsp.set_samp_rate),
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self.props.wireProperty("output_rate", self.dsp.set_output_rate),
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self.props.wireProperty("hd_output_rate", self.dsp.set_hd_output_rate),
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self.props.wireProperty("offset_freq", self.dsp.set_offset_freq),
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self.props.wireProperty("center_freq", self.dsp.set_center_freq),
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self.props.wireProperty("squelch_level", self.dsp.set_squelch_level),
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self.props.wireProperty("low_cut", set_low_cut),
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self.props.wireProperty("high_cut", set_high_cut),
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self.props.wireProperty("mod", self.dsp.set_demodulator),
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self.props.wireProperty("dmr_filter", self.dsp.set_dmr_filter),
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self.props.wireProperty("wfm_deemphasis_tau", self.dsp.set_wfm_deemphasis_tau),
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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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self.dsp.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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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 start(self):
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if self.sdrSource.isAvailable():
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self.dsp.start()
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else:
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self.startOnAvailable = True
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def receive_output(self, t, read_fn):
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logger.debug("adding 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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threading.Thread(target=self.pump(read_fn, write), name="dsp_pump_{}".format(t)).start()
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def stop(self):
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self.dsp.stop()
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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.dsp.start()
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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.dsp.stop()
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def onFail(self):
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logger.debug("received onFail(), shutting down DspSource")
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self.dsp.stop()
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def onShutdown(self):
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self.dsp.stop()
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