from owrx.command import Option from owrx.source.direct import DirectSource, DirectSourceDeviceDescription from subprocess import Popen import logging logger = logging.getLogger(__name__) class FifiSdrSource(DirectSource): def getCommandMapper(self): return ( super() .getCommandMapper() .setBase("arecord") .setMappings({"device": Option("-D"), "samp_rate": Option("-r")}) .setStatic("-t raw -f S16_LE -c2 -") ) def getEventNames(self): return super().getEventNames() + ["device"] def getFormatConversion(self): return ["csdr convert_s16_f", "csdr gain_ff 5"] def sendRockProgFrequency(self, frequency): process = Popen(["rockprog", "--vco", "-w", "--freq={}".format(frequency / 1e6)]) process.communicate() rc = process.wait() if rc != 0: logger.warning("rockprog failed to set frequency; rc=%i", rc) def preStart(self): values = self.getCommandValues() self.sendRockProgFrequency(values["tuner_freq"]) def onPropertyChange(self, changes): if "center_freq" in changes: self.sendRockProgFrequency(changes["center_freq"]) class FifiSdrDeviceDescription(DirectSourceDeviceDescription): pass