forked from platypush/platypush
129 lines
5 KiB
Python
129 lines
5 KiB
Python
import re
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import time
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from platypush.backend import Backend
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from platypush.context import get_plugin
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from platypush.message.event.music import MusicPlayEvent, MusicPauseEvent, \
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MusicStopEvent, NewPlayingTrackEvent, PlaylistChangeEvent, VolumeChangeEvent, \
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PlaybackConsumeModeChangeEvent, PlaybackSingleModeChangeEvent, \
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PlaybackRepeatModeChangeEvent, PlaybackRandomModeChangeEvent
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class MusicMpdBackend(Backend):
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"""
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This backend listens for events on a MPD/Mopidy music server.
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Triggers:
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* :class:`platypush.message.event.music.MusicPlayEvent` if the playback state changed to play
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* :class:`platypush.message.event.music.MusicPauseEvent` if the playback state changed to pause
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* :class:`platypush.message.event.music.MusicStopEvent` if the playback state changed to stop
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* :class:`platypush.message.event.music.NewPlayingTrackEvent` if a new track is being played
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* :class:`platypush.message.event.music.PlaylistChangeEvent` if the main playlist has changed
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* :class:`platypush.message.event.music.VolumeChangeEvent` if the main volume has changed
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Requires:
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* **python-mpd2** (``pip install python-mpd2``)
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* The :mod:`platypush.plugins.music.mpd` plugin to be configured
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"""
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def __init__(self, server='localhost', port=6600, poll_seconds=3, **kwargs):
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"""
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:param poll_seconds: Interval between queries to the server (default: 3 seconds)
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:type poll_seconds: float
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"""
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super().__init__(**kwargs)
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self.server = server
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self.port = port
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self.poll_seconds = poll_seconds
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def run(self):
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super().run()
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last_status = {}
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last_state = None
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last_track = None
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last_playlist = None
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plugin = None
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while not self.should_stop():
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success = False
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while not success:
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state = None
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playlist = None
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track = None
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try:
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plugin = get_plugin('music.mpd')
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if not plugin:
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raise StopIteration
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status = plugin.status().output
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if not status or status.get('state') is None:
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raise StopIteration
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track = plugin.currentsong().output
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state = status['state'].lower()
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playlist = status['playlist']
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success = True
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except Exception as e:
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self.logger.debug(e)
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get_plugin('music.mpd', reload=True)
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if not state: state = last_state
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if not playlist: playlist = last_playlist
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if not track: track = last_track
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finally:
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time.sleep(self.poll_seconds)
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if state != last_state:
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if state == 'stop':
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self.bus.post(MusicStopEvent(status=status, track=track))
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elif state == 'pause':
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self.bus.post(MusicPauseEvent(status=status, track=track))
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elif state == 'play':
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self.bus.post(MusicPlayEvent(status=status, track=track))
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if playlist != last_playlist:
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if last_playlist:
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# XXX plchanges can become heavy with big playlists,
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# PlaylistChangeEvent temporarily disabled
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# changes = plugin.plchanges(last_playlist).output
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# self.bus.post(PlaylistChangeEvent(changes=changes))
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self.bus.post(PlaylistChangeEvent())
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last_playlist = playlist
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if state == 'play' and track != last_track:
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self.bus.post(NewPlayingTrackEvent(status=status, track=track))
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if last_status.get('volume', None) != status['volume']:
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self.bus.post(VolumeChangeEvent(
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volume=int(status['volume']), status=status, track=track))
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if last_status.get('random', None) != status['random']:
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self.bus.post(PlaybackRandomModeChangeEvent(
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state=bool(int(status['random'])), status=status, track=track))
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if last_status.get('repeat', None) != status['repeat']:
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self.bus.post(PlaybackRepeatModeChangeEvent(
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state=bool(int(status['repeat'])), status=status, track=track))
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if last_status.get('consume', None) != status['consume']:
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self.bus.post(PlaybackConsumeModeChangeEvent(
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state=bool(int(status['consume'])), status=status, track=track))
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if last_status.get('single', None) != status['single']:
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self.bus.post(PlaybackSingleModeChangeEvent(
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state=bool(int(status['single'])), status=status, track=track))
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last_status = status
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last_state = state
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last_track = track
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time.sleep(self.poll_seconds)
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# vim:sw=4:ts=4:et:
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