82 lines
2.6 KiB
Python
82 lines
2.6 KiB
Python
from csdr.module import AutoStartModule
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from pycsdr.types import Format
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from pycsdr.modules import Writer, TcpSource
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from subprocess import Popen, PIPE
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from owrx.aprs.direwolf import DirewolfConfig, DirewolfConfigSubscriber
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from owrx.config.core import CoreConfig
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import threading
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import time
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import os
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import logging
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logger = logging.getLogger(__name__)
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class DirewolfModule(AutoStartModule, DirewolfConfigSubscriber):
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def __init__(self, service: bool = False):
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self.process = None
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self.tcpSource = None
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self.service = service
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self.direwolfConfigPath = "{tmp_dir}/openwebrx_direwolf_{myid}.conf".format(
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tmp_dir=CoreConfig().get_temporary_directory(), myid=id(self)
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)
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self.direwolfConfig = None
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super().__init__()
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def setWriter(self, writer: Writer) -> None:
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super().setWriter(writer)
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if self.tcpSource is not None:
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self.tcpSource.setWriter(writer)
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def getInputFormat(self) -> Format:
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return Format.SHORT
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def getOutputFormat(self) -> Format:
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return Format.CHAR
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def start(self):
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self.direwolfConfig = DirewolfConfig()
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self.direwolfConfig.wire(self)
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file = open(self.direwolfConfigPath, "w")
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file.write(self.direwolfConfig.getConfig(self.service))
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file.close()
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# direwolf -c {direwolf_config} -r {audio_rate} -t 0 -q d -q h 1>&2
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self.process = Popen(
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["direwolf", "-c", self.direwolfConfigPath, "-r", "48000", "-t", "0", "-q", "d", "-q", "h"],
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start_new_session=True,
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stdin=PIPE,
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)
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threading.Thread(target=self.pump(self.reader.read, self.process.stdin.write)).start()
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delay = 0.5
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retries = 0
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while True:
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try:
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self.tcpSource = TcpSource(self.direwolfConfig.getPort(), Format.CHAR)
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if self.writer:
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self.tcpSource.setWriter(self.writer)
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break
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except ConnectionError:
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if retries > 20:
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logger.error("maximum number of connection attempts reached. did direwolf start up correctly?")
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raise
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retries += 1
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time.sleep(delay)
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def stop(self):
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if self.process is not None:
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self.process.terminate()
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self.process.wait()
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self.process = None
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os.unlink(self.direwolfConfigPath)
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self.direwolfConfig.unwire(self)
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self.direwolfConfig = None
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self.reader.stop()
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def onConfigChanged(self):
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self.stop()
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self.start()
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