from owrx.meta import MetaParser from owrx.wsjt import WsjtParser from owrx.js8 import Js8Parser from owrx.aprs import AprsParser from owrx.pocsag import PocsagParser from owrx.source import SdrSourceEventClient, SdrSourceState, SdrClientClass from owrx.property import PropertyStack, PropertyLayer, PropertyValidator from owrx.property.validators import OrValidator, RegexValidator, BoolValidator from owrx.modes import Modes from owrx.config.core import CoreConfig from csdr.output import Output from csdr import Dsp import threading import re import logging logger = logging.getLogger(__name__) class ModulationValidator(OrValidator): """ This validator only allows alphanumeric characters and numbers, but no spaces or special characters """ def __init__(self): super().__init__(BoolValidator(), RegexValidator(re.compile("^[a-z0-9]+$"))) class DspManager(Output, SdrSourceEventClient): def __init__(self, handler, sdrSource): self.handler = handler self.sdrSource = sdrSource self.parsers = { "meta": MetaParser(self.handler), "wsjt_demod": WsjtParser(self.handler), "packet_demod": AprsParser(self.handler), "pocsag_demod": PocsagParser(self.handler), "js8_demod": Js8Parser(self.handler), } self.props = PropertyStack() # local demodulator properties not forwarded to the sdr # ensure strict validation since these can be set from the client # and are used to build executable commands validators = { "output_rate": "int", "hd_output_rate": "int", "squelch_level": "num", "secondary_mod": ModulationValidator(), "low_cut": "num", "high_cut": "num", "offset_freq": "int", "mod": ModulationValidator(), "secondary_offset_freq": "int", "dmr_filter": "int", } self.localProps = PropertyValidator(PropertyLayer().filter(*validators.keys()), validators) self.props.addLayer(0, self.localProps) # properties that we inherit from the sdr self.props.addLayer( 1, self.sdrSource.getProps().filter( "audio_compression", "fft_compression", "digimodes_fft_size", "samp_rate", "center_freq", "start_mod", "start_freq", "wfm_deemphasis_tau", "digital_voice_codecserver", ), ) self.dsp = Dsp(self) self.dsp.nc_port = self.sdrSource.getPort() def set_low_cut(cut): bpf = self.dsp.get_bpf() bpf[0] = cut self.dsp.set_bpf(*bpf) def set_high_cut(cut): bpf = self.dsp.get_bpf() bpf[1] = cut self.dsp.set_bpf(*bpf) def set_dial_freq(changes): if ( "center_freq" not in self.props or self.props["center_freq"] is None or "offset_freq" not in self.props or self.props["offset_freq"] is None ): return freq = self.props["center_freq"] + self.props["offset_freq"] for parser in self.parsers.values(): parser.setDialFrequency(freq) if "start_mod" in self.props: self.dsp.set_demodulator(self.props["start_mod"]) mode = Modes.findByModulation(self.props["start_mod"]) if mode and mode.bandpass: self.dsp.set_bpf(mode.bandpass.low_cut, mode.bandpass.high_cut) else: self.dsp.set_bpf(-4000, 4000) if "start_freq" in self.props and "center_freq" in self.props: self.dsp.set_offset_freq(self.props["start_freq"] - self.props["center_freq"]) else: self.dsp.set_offset_freq(0) self.subscriptions = [ self.props.wireProperty("audio_compression", self.dsp.set_audio_compression), self.props.wireProperty("fft_compression", self.dsp.set_fft_compression), self.props.wireProperty("digimodes_fft_size", self.dsp.set_secondary_fft_size), self.props.wireProperty("samp_rate", self.dsp.set_samp_rate), self.props.wireProperty("output_rate", self.dsp.set_output_rate), self.props.wireProperty("hd_output_rate", self.dsp.set_hd_output_rate), self.props.wireProperty("offset_freq", self.dsp.set_offset_freq), self.props.wireProperty("center_freq", self.dsp.set_center_freq), self.props.wireProperty("squelch_level", self.dsp.set_squelch_level), self.props.wireProperty("low_cut", set_low_cut), self.props.wireProperty("high_cut", set_high_cut), self.props.wireProperty("mod", self.dsp.set_demodulator), self.props.wireProperty("dmr_filter", self.dsp.set_dmr_filter), self.props.wireProperty("wfm_deemphasis_tau", self.dsp.set_wfm_deemphasis_tau), self.props.wireProperty("digital_voice_codecserver", self.dsp.set_codecserver), self.props.filter("center_freq", "offset_freq").wire(set_dial_freq), ] self.dsp.set_temporary_directory(CoreConfig().get_temporary_directory()) def send_secondary_config(*args): self.handler.write_secondary_dsp_config( { "secondary_fft_size": self.props["digimodes_fft_size"], "if_samp_rate": self.dsp.if_samp_rate(), "secondary_bw": self.dsp.secondary_bw(), } ) def set_secondary_mod(mod): if mod == False: mod = None self.dsp.set_secondary_demodulator(mod) if mod is not None: send_secondary_config() self.subscriptions += [ self.props.wireProperty("secondary_mod", set_secondary_mod), self.props.wireProperty("digimodes_fft_size", send_secondary_config), self.props.wireProperty("secondary_offset_freq", self.dsp.set_secondary_offset_freq), ] self.startOnAvailable = False self.sdrSource.addClient(self) super().__init__() def start(self): if self.sdrSource.isAvailable(): self.dsp.setBuffer(self.sdrSource.getBuffer()) self.dsp.start() else: self.startOnAvailable = True def receive_output(self, t, read_fn): logger.debug("adding 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.handler.write_secondary_demod, } for demod, parser in self.parsers.items(): writers[demod] = parser.parse write = writers[t] threading.Thread(target=self.pump(read_fn, write), name="dsp_pump_{}".format(t)).start() def stop(self): self.dsp.stop() 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.dsp.setBuffer(self.sdrSource.getBuffer()) self.dsp.start() self.startOnAvailable = False elif state is SdrSourceState.STOPPING: logger.debug("received STATE_STOPPING, shutting down DspSource") self.dsp.stop() def onFail(self): logger.debug("received onFail(), shutting down DspSource") self.dsp.stop() def onShutdown(self): self.dsp.stop()