main.py

#!/usr/bin/python3

# Copyright (c) 2017 Johannes Leupolz
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the "Software"), to deal in
# the Software without restriction, including without limitation the rights to
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
# of the Software, and to permit persons to whom the Software is furnished to do
# so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

import asyncio, gbulb
from pydbus import SessionBus
import os
import yaml
import argparse
from core import BluetoothAudioBridge
from configManager import BluetoothMonitorConfigManager
import signal

parser = argparse.ArgumentParser()
parser.add_argument("--config", help="path configuration file (yaml format)")
args=parser.parse_args()

# create event loop
gbulb.install()
loop=asyncio.get_event_loop()

configManager=BluetoothMonitorConfigManager(loop)

appConfigFilePath=None
if args.config:
  appConfigFilePath=args.config
elif os.getenv("XDG_CONFIG_HOME"):
  xdgConfigDir=os.getenv("XDG_CONFIG_HOME")
  appConfigDir=os.path.join(xdgConfigDir,"bluetooth-speaker-audio-bridge")
  if not os.path.exists(appConfigDir):
    os.makedirs(appConfigDir)
  appConfigFilePath=os.path.join(appConfigDir,"config.yaml")
configManager.appConfigFilePath=appConfigFilePath


# create instance of bluetooth audio bridge main class
bluetoothAudioBridge=BluetoothAudioBridge(loop)

# load configuration
configManager.onLoadConfigHandler=bluetoothAudioBridge.loadConfig
configManager.trace=bluetoothAudioBridge.trace
configManager.loadConfig()
if configManager.appConfig["updateConfig"]:
    loop.run_until_complete(configManager.startWatchConfig())


#register termination handler
exited=False
def askExit(signame):
    #beware of typos here. might segfault
    print("got signal %s: exit" % signame)
    global exited
    exited=True
    print("stopping loop")
    loop.stop()
    bluetoothAudioBridge.Continue=False
# Override default signal handler (no KeyboardInterrupt by GLib or Python anymore)
# (https://github.com/GNOME/pygobject/blob/master/gi/overrides/GLib.py)

signal.signal(signal.SIGINT,  lambda sig,frame: askExit('SIGINT'))
signal.signal(signal.SIGTERM, lambda sig,frame: askExit('SIGTERM'))

#register dbus
print("registering on dbus")
loop.run_until_complete(bluetoothAudioBridge.registerDbus())

if not exited:
  print("running main loop")
  loop.run_forever()
  print("main loop quit, cleaning up")
  loop.run_until_complete(bluetoothAudioBridge.unregister())
  loop.run_until_complete(configManager.stopWatchConfig())
  if configManager.appConfig["saveConfigOnExit"]:
     configManager.saveConfig()

loop.close()
print("Finished")