133 lines
4.6 KiB
Python
133 lines
4.6 KiB
Python
import logging
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import multiprocessing
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import socket
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import time
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# TODO Log nice error message if pylast isn't found
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import pylast
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from mopidy import get_version, settings, SettingsError
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from mopidy.frontends.base import BaseFrontend
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from mopidy.utils.process import BaseProcess
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logger = logging.getLogger('mopidy.frontends.lastfm')
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CLIENT_ID = u'mop'
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CLIENT_VERSION = get_version()
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# pylast raises UnicodeEncodeError on conversion from unicode objects to
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# ascii-encoded bytestrings, so we explicitly encode as utf-8 before passing
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# strings to pylast.
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ENCODING = u'utf-8'
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class LastfmFrontend(BaseFrontend):
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"""
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Frontend which scrobbles the music you plays to your Last.fm profile.
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**Dependencies:**
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- `pylast <http://code.google.com/p/pylast/>`_ >= 0.4.30
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**Settings:**
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- :attr:`mopidy.settings.LASTFM_USERNAME`
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- :attr:`mopidy.settings.LASTFM_PASSWORD`
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"""
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def __init__(self, *args, **kwargs):
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super(LastfmFrontend, self).__init__(*args, **kwargs)
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(self.connection, other_end) = multiprocessing.Pipe()
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self.process = LastfmFrontendProcess(other_end)
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def start(self):
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self.process.start()
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def destroy(self):
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self.process.destroy()
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def process_message(self, message):
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self.connection.send(message)
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class LastfmFrontendProcess(BaseProcess):
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def __init__(self, connection):
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super(LastfmFrontendProcess, self).__init__()
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self.name = u'LastfmFrontendProcess'
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self.daemon = True
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self.connection = connection
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self.lastfm = None
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self.scrobbler = None
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self.last_start_time = None
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def run_inside_try(self):
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self.setup()
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while True:
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self.connection.poll(None)
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message = self.connection.recv()
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self.process_message(message)
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def setup(self):
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try:
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username = settings.LASTFM_USERNAME
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password_hash = pylast.md5(settings.LASTFM_PASSWORD)
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self.lastfm = pylast.get_lastfm_network(
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username=username, password_hash=password_hash)
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self.scrobbler = self.lastfm.get_scrobbler(
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CLIENT_ID, CLIENT_VERSION)
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logger.info(u'Connected to Last.fm')
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except SettingsError as e:
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logger.info(u'Last.fm scrobbler did not start.')
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logger.debug(u'Last.fm settings error: %s', e)
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except (pylast.WSError, socket.error) as e:
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logger.error(u'Last.fm connection error: %s', e)
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def process_message(self, message):
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if message['command'] == 'started_playing':
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self.started_playing(message['track'])
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elif message['command'] == 'stopped_playing':
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self.stopped_playing(message['track'], message['stop_position'])
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else:
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pass # Ignore commands for other frontends
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def started_playing(self, track):
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artists = ', '.join([a.name for a in track.artists])
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duration = track.length // 1000
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self.last_start_time = int(time.time())
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logger.debug(u'Now playing track: %s - %s', artists, track.name)
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try:
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self.scrobbler.report_now_playing(
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artists.encode(ENCODING),
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track.name.encode(ENCODING),
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album=track.album.name.encode(ENCODING),
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duration=duration,
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track_number=track.track_no)
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except (pylast.ScrobblingError, socket.error) as e:
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logger.error(u'Last.fm now playing error: %s', e)
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def stopped_playing(self, track, stop_position):
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artists = ', '.join([a.name for a in track.artists])
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duration = track.length // 1000
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stop_position = stop_position // 1000
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if duration < 30:
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logger.debug(u'Track too short to scrobble. (30s)')
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return
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if stop_position < duration // 2 and stop_position < 240:
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logger.debug(
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u'Track not played long enough to scrobble. (50% or 240s)')
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return
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if self.last_start_time is None:
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self.last_start_time = int(time.time()) - duration
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logger.debug(u'Scrobbling track: %s - %s', artists, track.name)
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try:
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self.scrobbler.scrobble(
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artists.encode(ENCODING),
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track.name.encode(ENCODING),
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time_started=self.last_start_time,
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source=pylast.SCROBBLE_SOURCE_USER,
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mode=pylast.SCROBBLE_MODE_PLAYED,
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duration=duration,
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album=track.album.name.encode(ENCODING),
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track_number=track.track_no)
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except (pylast.ScrobblingError, socket.error) as e:
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logger.error(u'Last.fm scrobbling error: %s', e)
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