Files
Discord-Radio-Bot/gqrxHandler.py
Logan Cusano a483f83b4b //WIP V3
Bot Changes
- Increased loop delay when waiting for GQRX to start
Noisegate Change
- Display whether the noisegate is active or not in the logs
2022-04-09 02:36:48 -04:00

220 lines
6.8 KiB
Python

import shutil
import logging
import threading
import subprocess
import time
from pathlib import Path
from telnetlib import Telnet
from BotResources import *
from time import sleep
def reset_crashed(_config_path):
config = configparser.SafeConfigParser()
config.read(_config_path)
if config.has_section('General'):
if config.getboolean('General', 'crashed'):
config['General']['crashed'] = 'false'
with open(_config_path, 'w') as config_file:
config.write(config_file)
return True
else:
return False
class GQRXHandler(threading.Thread):
def __init__(self):
super().__init__()
self.GQRX_Config_Path = Path(f"{Path.home()}/.config/gqrx/drb_defaults.conf")
self.GQRXDir: str = GQRX_BIN_LOCATION
self.GQRXEXE: str = shutil.which(GQRX_BIN)
self.GQRXProc = None
self.GQRX_Started = False
self.logger = logging.getLogger("Discord_Radio_Bot.GQRXHandler")
self.Frequency = None
self.Mode = DEFAULT_RADIO_SETTINGS['mode']
self.Frequency = DEFAULT_RADIO_SETTINGS['freq']
self.Squelch = DEFAULT_RADIO_SETTINGS['squelch']
self.Start_GQRX = False
self.Stop_GQRX = False
self.Output_Device_Name = None
self.hostname = "localhost"
self.port = 7356
self.tel_conn = None
def run(self) -> None:
while True:
if self.Start_GQRX:
self.open_gqrx()
self.Start_GQRX = False
self.Stop_GQRX = False
self.logger.debug("GQRX is open, waiting for it to close")
while not self.Stop_GQRX:
sleep(1)
self.logger.debug('Request to close GQRX')
self.close_gqrx()
sleep(.5)
def set_gqrx_parameters(self, _frequency: str = False, _start: bool = False, _stop: bool = False,
_output_device_name: str = None, _fm_mode: str = None, _squelch: float = None,
_hostname: str = None, _port: int = None, _start_dsp: bool = None):
if _frequency:
self.Frequency = _frequency
if self.GQRX_Started:
self.change_freq(_frequency)
if _output_device_name:
self.Output_Device_Name = _output_device_name
if _fm_mode:
self.Mode = _fm_mode
if self.GQRX_Started:
self.change_mode(_fm_mode)
if _squelch:
self.Squelch = _squelch
if self.GQRX_Started:
self.change_squelch(_squelch)
if _hostname:
self.hostname = _hostname
self.Start_GQRX = True
if _port:
self.port = _port
self.Start_GQRX = True
if _start_dsp:
self.start_dsp()
if _start:
self.Start_GQRX = _start
if _stop:
self.Stop_GQRX = _stop
def open_gqrx(self):
if self.GQRX_Started:
self.close_gqrx()
gqrx_kwargs = [f"gqrx", "-c", "drb_defaults.conf"]
self.logger.info(f"Resetting 'crashed' option in the GQRX config")
self.reset_or_create_config()
self.logger.info(f"Starting GQRX")
self.logger.debug(f"GQRX Keyword Args: {gqrx_kwargs}")
self.GQRXProc = subprocess.Popen(gqrx_kwargs, executable=self.GQRXEXE, shell=False)
while not self.tel_conn:
self.create_telnet_connection()
sleep(2)
self.logger.debug(f"Waiting for GQRX to start")
self.GQRX_Started = True
self.start_dsp()
self.set_all_settings(_squelch=self.Squelch, _mode=self.Mode, _freq=self.Frequency)
self.logger.debug('Finished opening GQRX')
def close_gqrx(self):
self.logger.info(f"Closing GQRX")
try:
self.GQRXProc.kill()
seconds_waited = 0
while self.GQRXProc.poll() is None:
# Terminate the process every 5 seconds
if seconds_waited % 5 == 0:
self.logger.info("Terminating GQRX")
self.GQRXProc.terminate()
sleep(1)
self.logger.debug(f"Waited {seconds_waited} seconds")
seconds_waited += 1
self.logger.debug("GQRX Closed")
self.GQRX_Started = False
self.tel_conn = None
except Exception as e:
self.logger.error(e)
def create_telnet_connection(self):
self.logger.info("Creating connection")
try:
self.tel_conn = Telnet(self.hostname, self.port)
self.tel_conn.open(self.hostname, self.port)
self.logger.debug(f"GQRX is open")
return True
except Exception as err:
self.logger.warning(err)
self.tel_conn = None
return False
def check_dsp(self):
self.logger.debug(f"Checking if DSP is running on GQRX")
self.tel_conn.write(bytes(f"u DSP", 'utf-8'))
if self.tel_conn.read_some() == b"1":
return True
else:
return False
def start_dsp(self):
if not self.check_dsp():
self.logger.debug(f"Starting DSP on GQRX")
self.tel_conn.write(bytes(f"U DSP 1", 'utf-8'))
self.tel_conn.read_until(b'RPRT 0')
def change_freq(self, freq):
self.logger.debug(f"Changing freq to {freq}")
self.tel_conn.write(bytes(f"F {int(freq)}", 'utf-8'))
self.tel_conn.read_until(b'RPRT 0')
def change_squelch(self, squelch):
if not check_negative(squelch):
squelch = float(-abs(squelch))
self.logger.debug(f"Changing squelch to {squelch}")
self.tel_conn.write(bytes(f"L SQL {float(squelch)}", 'utf-8'))
self.tel_conn.read_until(b'RPRT 0')
def change_mode(self, mode):
self.logger.debug(f"Changing mode to {mode}")
self.tel_conn.write(bytes(f"M {str(mode)}", 'utf-8'))
self.tel_conn.read_until(b'RPRT 0')
def set_all_settings(self, _mode, _squelch, _freq):
self.change_squelch(0)
self.change_mode(_mode)
self.change_freq(_freq)
self.change_squelch(_squelch)
def reset_or_create_config(self):
if self.GQRX_Config_Path.is_file():
self.logger.debug(f"GQRX Config exists, resetting 'crashed' setting")
reset_crashed(_config_path=self.GQRX_Config_Path)
else:
self.logger.debug(f"GQRX config does not exist, creating it from template")
from templates.gqrx_config_template import drb_defaults
config = drb_defaults
try:
with open(self.GQRX_Config_Path, 'w+') as config_file:
config_file.write(config)
except OSError as err:
self.logger.error(err)