93 lines
3.0 KiB
Python
93 lines
3.0 KiB
Python
from owrx.config import PropertyManager
|
|
from csdr import csdr
|
|
import threading
|
|
from owrx.source import SdrSource
|
|
|
|
import logging
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class SpectrumThread(csdr.output):
|
|
def __init__(self, sdrSource):
|
|
self.sdrSource = sdrSource
|
|
super().__init__()
|
|
|
|
self.props = props = self.sdrSource.props.collect(
|
|
"samp_rate",
|
|
"fft_size",
|
|
"fft_fps",
|
|
"fft_voverlap_factor",
|
|
"fft_compression",
|
|
"csdr_dynamic_bufsize",
|
|
"csdr_print_bufsizes",
|
|
"csdr_through",
|
|
"temporary_directory",
|
|
).defaults(PropertyManager.getSharedInstance())
|
|
|
|
self.dsp = dsp = csdr.dsp(self)
|
|
dsp.nc_port = self.sdrSource.getPort()
|
|
dsp.set_demodulator("fft")
|
|
|
|
def set_fft_averages(key, value):
|
|
samp_rate = props["samp_rate"]
|
|
fft_size = props["fft_size"]
|
|
fft_fps = props["fft_fps"]
|
|
fft_voverlap_factor = props["fft_voverlap_factor"]
|
|
|
|
dsp.set_fft_averages(
|
|
int(round(1.0 * samp_rate / fft_size / fft_fps / (1.0 - fft_voverlap_factor)))
|
|
if fft_voverlap_factor > 0
|
|
else 0
|
|
)
|
|
|
|
self.subscriptions = [
|
|
props.getProperty("samp_rate").wire(dsp.set_samp_rate),
|
|
props.getProperty("fft_size").wire(dsp.set_fft_size),
|
|
props.getProperty("fft_fps").wire(dsp.set_fft_fps),
|
|
props.getProperty("fft_compression").wire(dsp.set_fft_compression),
|
|
props.getProperty("temporary_directory").wire(dsp.set_temporary_directory),
|
|
props.collect("samp_rate", "fft_size", "fft_fps", "fft_voverlap_factor").wire(set_fft_averages),
|
|
]
|
|
|
|
set_fft_averages(None, None)
|
|
|
|
dsp.csdr_dynamic_bufsize = props["csdr_dynamic_bufsize"]
|
|
dsp.csdr_print_bufsizes = props["csdr_print_bufsizes"]
|
|
dsp.csdr_through = props["csdr_through"]
|
|
logger.debug("Spectrum thread initialized successfully.")
|
|
|
|
def start(self):
|
|
self.sdrSource.addClient(self)
|
|
if self.sdrSource.isAvailable():
|
|
self.dsp.start()
|
|
|
|
def supports_type(self, t):
|
|
return t == "audio"
|
|
|
|
def receive_output(self, type, read_fn):
|
|
if self.props["csdr_dynamic_bufsize"]:
|
|
read_fn(8) # dummy read to skip bufsize & preamble
|
|
logger.debug("Note: CSDR_DYNAMIC_BUFSIZE_ON = 1")
|
|
|
|
threading.Thread(target=self.pump(read_fn, self.sdrSource.writeSpectrumData)).start()
|
|
|
|
def stop(self):
|
|
self.dsp.stop()
|
|
self.sdrSource.removeClient(self)
|
|
for c in self.subscriptions:
|
|
c.cancel()
|
|
self.subscriptions = []
|
|
|
|
def getClientClass(self):
|
|
return SdrSource.CLIENT_USER
|
|
|
|
def onStateChange(self, state):
|
|
if state in [SdrSource.STATE_STOPPING, SdrSource.STATE_FAILED]:
|
|
self.dsp.stop()
|
|
elif state == SdrSource.STATE_RUNNING:
|
|
self.dsp.start()
|
|
|
|
def onBusyStateChange(self, state):
|
|
pass
|