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#!/usr/bin/env python3
import sys
import os
sys.path.append(os.path.abspath(os.path.dirname(__file__) + '/..'))
from dbus_next.aio import MessageBus
import asyncio
loop = asyncio.get_event_loop()
async def main():
bus = await MessageBus().connect()
# the introspection xml would normally be included in your project, but
# this is convenient for development
introspection = await bus.introspect('org.mpris.MediaPlayer2.vlc', '/org/mpris/MediaPlayer2')
obj = bus.get_proxy_object('org.mpris.MediaPlayer2.vlc', '/org/mpris/MediaPlayer2',
introspection)
player = obj.get_interface('org.mpris.MediaPlayer2.Player')
properties = obj.get_interface('org.freedesktop.DBus.Properties')
# call methods on the interface (this causes the media player to play)
await player.call_play()
volume = await player.get_volume()
print(f'current volume: {volume}, setting to 0.5')
await player.set_volume(0.5)
# listen to signals
def on_properties_changed(interface_name, changed_properties, invalidated_properties):
for changed, variant in changed_properties.items():
print(f'property changed: {changed} - {variant.value}')
properties.on_properties_changed(on_properties_changed)
await bus.wait_for_disconnect()
loop.run_until_complete(main())
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