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#!/usr/bin/env python3
import os
import sys
sys.path.append(os.path.abspath(os.path.dirname(__file__) + "/.."))
import asyncio
from dbus_fast.aio import MessageBus
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()
asyncio.run(main())
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