94 lines
2.7 KiB
Python
94 lines
2.7 KiB
Python
from owrx.config import Config
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from csdr.chain.fft import FftChain
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import threading
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from owrx.source import SdrSource, SdrSourceEventClient
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from owrx.property import PropertyStack
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import logging
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logger = logging.getLogger(__name__)
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class SpectrumThread(SdrSourceEventClient):
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def __init__(self, sdrSource):
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self.sdrSource = sdrSource
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super().__init__()
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stack = PropertyStack()
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stack.addLayer(0, self.sdrSource.props)
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stack.addLayer(1, Config.get())
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self.props = stack.filter(
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"samp_rate",
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"fft_size",
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"fft_fps",
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"fft_voverlap_factor",
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"fft_compression",
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"csdr_dynamic_bufsize",
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"csdr_print_bufsizes",
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"csdr_through",
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)
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self.dsp = None
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self.subscriptions = []
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self.subscriptions += [
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# these props require a restart
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self.props.wireProperty("fft_size", self.restart),
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self.props.wireProperty("fft_compression", self.restart),
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]
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logger.debug("Spectrum thread initialized successfully.")
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def start(self):
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if self.dsp is not None:
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return
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self.dsp = FftChain(
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self.props['samp_rate'],
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self.props['fft_size'],
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self.props['fft_voverlap_factor'],
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self.props['fft_fps'],
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self.props['fft_compression']
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)
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self.sdrSource.addClient(self)
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self.subscriptions += [
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# these props can be set on the fly
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self.props.wireProperty("samp_rate", self.dsp.setSampleRate),
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self.props.wireProperty("fft_fps", self.dsp.setFps),
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self.props.wireProperty("fft_voverlap_factor", self.dsp.setVOverlapFactor),
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]
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threading.Thread(target=self.dsp.pump(self.sdrSource.writeSpectrumData)).start()
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if self.sdrSource.isAvailable():
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self.dsp.setInput(self.sdrSource.getBuffer())
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def stop(self):
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if self.dsp is None:
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return
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self.dsp.stop()
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self.dsp = None
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self.sdrSource.removeClient(self)
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while self.subscriptions:
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self.subscriptions.pop().cancel()
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def restart(self, *args, **kwargs):
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self.stop()
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self.start()
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def getClientClass(self):
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return SdrSource.CLIENT_USER
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def onStateChange(self, state):
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if state in [SdrSource.STATE_STOPPING, SdrSource.STATE_FAILED]:
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self.dsp.stop()
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elif state == SdrSource.STATE_RUNNING:
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if self.dsp is None:
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self.start()
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else:
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self.dsp.setInput(self.sdrSource.getBuffer())
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def onBusyStateChange(self, state):
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pass
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