/usr/lib/python2.7/dist-packages/mopidy_mpris/objects.py is in mopidy-mpris 1.3.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import base64
import logging
import os
import dbus
import dbus.service
from mopidy.core import PlaybackState
logger = logging.getLogger(__name__)
BUS_NAME = 'org.mpris.MediaPlayer2.mopidy'
OBJECT_PATH = '/org/mpris/MediaPlayer2'
ROOT_IFACE = 'org.mpris.MediaPlayer2'
PLAYER_IFACE = 'org.mpris.MediaPlayer2.Player'
PLAYLISTS_IFACE = 'org.mpris.MediaPlayer2.Playlists'
class MprisObject(dbus.service.Object):
"""Implements http://www.mpris.org/2.2/spec/"""
properties = None
def __init__(self, config, core):
self.config = config
self.core = core
self.properties = {
ROOT_IFACE: self._get_root_iface_properties(),
PLAYER_IFACE: self._get_player_iface_properties(),
PLAYLISTS_IFACE: self._get_playlists_iface_properties(),
}
bus_name = self._connect_to_dbus()
dbus.service.Object.__init__(self, bus_name, OBJECT_PATH)
def _get_root_iface_properties(self):
return {
'CanQuit': (True, None),
'Fullscreen': (False, None),
'CanSetFullscreen': (False, None),
'CanRaise': (False, None),
# NOTE Change if adding optional track list support
'HasTrackList': (False, None),
'Identity': ('Mopidy', None),
'DesktopEntry': (self.get_DesktopEntry, None),
'SupportedUriSchemes': (self.get_SupportedUriSchemes, None),
# NOTE Return MIME types supported by local backend if support for
# reporting supported MIME types is added
'SupportedMimeTypes': (dbus.Array([
dbus.String('audio/mpeg'),
dbus.String('audio/x-ms-wma'),
dbus.String('audio/x-ms-asf'),
dbus.String('audio/x-flac'),
dbus.String('audio/flac'),
dbus.String('audio/l16;channels=2;rate=44100'),
dbus.String('audio/l16;rate=44100;channels=2'),
], signature='s'), None),
}
def _get_player_iface_properties(self):
return {
'PlaybackStatus': (self.get_PlaybackStatus, None),
'LoopStatus': (self.get_LoopStatus, self.set_LoopStatus),
'Rate': (1.0, self.set_Rate),
'Shuffle': (self.get_Shuffle, self.set_Shuffle),
'Metadata': (self.get_Metadata, None),
'Volume': (self.get_Volume, self.set_Volume),
'Position': (self.get_Position, None),
'MinimumRate': (1.0, None),
'MaximumRate': (1.0, None),
'CanGoNext': (self.get_CanGoNext, None),
'CanGoPrevious': (self.get_CanGoPrevious, None),
'CanPlay': (self.get_CanPlay, None),
'CanPause': (self.get_CanPause, None),
'CanSeek': (self.get_CanSeek, None),
'CanControl': (self.get_CanControl, None),
}
def _get_playlists_iface_properties(self):
return {
'PlaylistCount': (self.get_PlaylistCount, None),
'Orderings': (self.get_Orderings, None),
'ActivePlaylist': (self.get_ActivePlaylist, None),
}
def _connect_to_dbus(self):
bus_type = self.config['mpris']['bus_type']
logger.debug('Connecting to D-Bus %s bus...', bus_type)
if bus_type == 'system':
bus = dbus.SystemBus()
else:
bus = dbus.SessionBus()
bus_name = dbus.service.BusName(BUS_NAME, bus)
logger.info('MPRIS server connected to D-Bus %s bus', bus_type)
return bus_name
def get_playlist_id(self, playlist_uri):
# Only A-Za-z0-9_ is allowed, which is 63 chars, so we can't use
# base64. Luckily, D-Bus does not limit the length of object paths.
# Since base32 pads trailing bytes with "=" chars, we need to replace
# them with an allowed character such as "_".
encoded_uri = base64.b32encode(playlist_uri).replace('=', '_')
return '/com/mopidy/playlist/%s' % encoded_uri
def get_playlist_uri(self, playlist_id):
encoded_uri = playlist_id.split('/')[-1].replace('_', '=')
return base64.b32decode(encoded_uri)
def get_track_id(self, tl_track):
return '/com/mopidy/track/%d' % tl_track.tlid
def get_track_tlid(self, track_id):
assert track_id.startswith('/com/mopidy/track/')
return track_id.split('/')[-1]
# --- Properties interface
@dbus.service.method(dbus_interface=dbus.PROPERTIES_IFACE,
in_signature='ss', out_signature='v')
def Get(self, interface, prop):
logger.debug(
'%s.Get(%s, %s) called',
dbus.PROPERTIES_IFACE, repr(interface), repr(prop))
(getter, _) = self.properties[interface][prop]
if callable(getter):
return getter()
else:
return getter
@dbus.service.method(dbus_interface=dbus.PROPERTIES_IFACE,
in_signature='s', out_signature='a{sv}')
def GetAll(self, interface):
logger.debug(
'%s.GetAll(%s) called', dbus.PROPERTIES_IFACE, repr(interface))
getters = {}
for key, (getter, _) in self.properties[interface].iteritems():
getters[key] = getter() if callable(getter) else getter
return getters
@dbus.service.method(dbus_interface=dbus.PROPERTIES_IFACE,
in_signature='ssv', out_signature='')
def Set(self, interface, prop, value):
logger.debug(
'%s.Set(%s, %s, %s) called',
dbus.PROPERTIES_IFACE, repr(interface), repr(prop), repr(value))
_, setter = self.properties[interface][prop]
if setter is not None:
setter(value)
self.PropertiesChanged(
interface, {prop: self.Get(interface, prop)}, [])
@dbus.service.signal(dbus_interface=dbus.PROPERTIES_IFACE,
signature='sa{sv}as')
def PropertiesChanged(self, interface, changed_properties,
invalidated_properties):
logger.debug(
'%s.PropertiesChanged(%s, %s, %s) signaled',
dbus.PROPERTIES_IFACE, interface, changed_properties,
invalidated_properties)
# --- Root interface methods
@dbus.service.method(dbus_interface=ROOT_IFACE)
def Raise(self):
logger.debug('%s.Raise called', ROOT_IFACE)
# Do nothing, as we do not have a GUI
@dbus.service.method(dbus_interface=ROOT_IFACE)
def Quit(self):
logger.debug('%s.Quit called', ROOT_IFACE)
# Do nothing, as we do not allow MPRIS clients to shut down Mopidy
# --- Root interface properties
def get_DesktopEntry(self):
return os.path.splitext(os.path.basename(
self.config['mpris']['desktop_file']))[0]
def get_SupportedUriSchemes(self):
return dbus.Array(self.core.uri_schemes.get(), signature='s')
# --- Player interface methods
@dbus.service.method(dbus_interface=PLAYER_IFACE)
def Next(self):
logger.debug('%s.Next called', PLAYER_IFACE)
if not self.get_CanGoNext():
logger.debug('%s.Next not allowed', PLAYER_IFACE)
return
self.core.playback.next().get()
@dbus.service.method(dbus_interface=PLAYER_IFACE)
def Previous(self):
logger.debug('%s.Previous called', PLAYER_IFACE)
if not self.get_CanGoPrevious():
logger.debug('%s.Previous not allowed', PLAYER_IFACE)
return
self.core.playback.previous().get()
@dbus.service.method(dbus_interface=PLAYER_IFACE)
def Pause(self):
logger.debug('%s.Pause called', PLAYER_IFACE)
if not self.get_CanPause():
logger.debug('%s.Pause not allowed', PLAYER_IFACE)
return
self.core.playback.pause().get()
@dbus.service.method(dbus_interface=PLAYER_IFACE)
def PlayPause(self):
logger.debug('%s.PlayPause called', PLAYER_IFACE)
if not self.get_CanPause():
logger.debug('%s.PlayPause not allowed', PLAYER_IFACE)
return
state = self.core.playback.state.get()
if state == PlaybackState.PLAYING:
self.core.playback.pause().get()
elif state == PlaybackState.PAUSED:
self.core.playback.resume().get()
elif state == PlaybackState.STOPPED:
self.core.playback.play().get()
@dbus.service.method(dbus_interface=PLAYER_IFACE)
def Stop(self):
logger.debug('%s.Stop called', PLAYER_IFACE)
if not self.get_CanControl():
logger.debug('%s.Stop not allowed', PLAYER_IFACE)
return
self.core.playback.stop().get()
@dbus.service.method(dbus_interface=PLAYER_IFACE)
def Play(self):
logger.debug('%s.Play called', PLAYER_IFACE)
if not self.get_CanPlay():
logger.debug('%s.Play not allowed', PLAYER_IFACE)
return
state = self.core.playback.state.get()
if state == PlaybackState.PAUSED:
self.core.playback.resume().get()
else:
self.core.playback.play().get()
@dbus.service.method(dbus_interface=PLAYER_IFACE)
def Seek(self, offset):
logger.debug('%s.Seek called', PLAYER_IFACE)
if not self.get_CanSeek():
logger.debug('%s.Seek not allowed', PLAYER_IFACE)
return
offset_in_milliseconds = offset // 1000
current_position = self.core.playback.time_position.get()
new_position = current_position + offset_in_milliseconds
if new_position < 0:
new_position = 0
self.core.playback.seek(new_position)
@dbus.service.method(dbus_interface=PLAYER_IFACE)
def SetPosition(self, track_id, position):
logger.debug('%s.SetPosition called', PLAYER_IFACE)
if not self.get_CanSeek():
logger.debug('%s.SetPosition not allowed', PLAYER_IFACE)
return
position = position // 1000
current_tl_track = self.core.playback.current_tl_track.get()
if current_tl_track is None:
return
if track_id != self.get_track_id(current_tl_track):
return
if position < 0:
return
if current_tl_track.track.length < position:
return
self.core.playback.seek(position)
@dbus.service.method(dbus_interface=PLAYER_IFACE)
def OpenUri(self, uri):
logger.debug('%s.OpenUri called', PLAYER_IFACE)
if not self.get_CanControl():
# NOTE The spec does not explictly require this check, but guarding
# the other methods doesn't help much if OpenUri is open for use.
logger.debug('%s.OpenUri not allowed', PLAYER_IFACE)
return
# NOTE Check if URI has MIME type known to the backend, if MIME support
# is added to the backend.
tl_tracks = self.core.tracklist.add(uri=uri).get()
if tl_tracks:
self.core.playback.play(tl_tracks[0])
else:
logger.debug('Track with URI "%s" not found in library.', uri)
# --- Player interface signals
@dbus.service.signal(dbus_interface=PLAYER_IFACE, signature='x')
def Seeked(self, position):
logger.debug('%s.Seeked signaled', PLAYER_IFACE)
# Do nothing, as just calling the method is enough to emit the signal.
# --- Player interface properties
def get_PlaybackStatus(self):
state = self.core.playback.state.get()
if state == PlaybackState.PLAYING:
return 'Playing'
elif state == PlaybackState.PAUSED:
return 'Paused'
elif state == PlaybackState.STOPPED:
return 'Stopped'
def get_LoopStatus(self):
repeat = self.core.tracklist.repeat.get()
single = self.core.tracklist.single.get()
if not repeat:
return 'None'
else:
if single:
return 'Track'
else:
return 'Playlist'
def set_LoopStatus(self, value):
if not self.get_CanControl():
logger.debug('Setting %s.LoopStatus not allowed', PLAYER_IFACE)
return
if value == 'None':
self.core.tracklist.repeat = False
self.core.tracklist.single = False
elif value == 'Track':
self.core.tracklist.repeat = True
self.core.tracklist.single = True
elif value == 'Playlist':
self.core.tracklist.repeat = True
self.core.tracklist.single = False
def set_Rate(self, value):
if not self.get_CanControl():
# NOTE The spec does not explictly require this check, but it was
# added to be consistent with all the other property setters.
logger.debug('Setting %s.Rate not allowed', PLAYER_IFACE)
return
if value == 0:
self.Pause()
def get_Shuffle(self):
return self.core.tracklist.random.get()
def set_Shuffle(self, value):
if not self.get_CanControl():
logger.debug('Setting %s.Shuffle not allowed', PLAYER_IFACE)
return
if value:
self.core.tracklist.random = True
else:
self.core.tracklist.random = False
def get_Metadata(self):
current_tl_track = self.core.playback.current_tl_track.get()
if current_tl_track is None:
return {'mpris:trackid': ''}
else:
(_, track) = current_tl_track
metadata = {'mpris:trackid': self.get_track_id(current_tl_track)}
if track.length:
metadata['mpris:length'] = dbus.Int64(track.length * 1000)
if track.uri:
metadata['xesam:url'] = track.uri
if track.name:
metadata['xesam:title'] = track.name
if track.artists:
artists = list(track.artists)
artists.sort(key=lambda a: a.name)
metadata['xesam:artist'] = dbus.Array(
[a.name for a in artists if a.name], signature='s')
if track.album and track.album.name:
metadata['xesam:album'] = track.album.name
if track.album and track.album.artists:
artists = list(track.album.artists)
artists.sort(key=lambda a: a.name)
metadata['xesam:albumArtist'] = dbus.Array(
[a.name for a in artists if a.name], signature='s')
if track.album and track.album.images:
url = sorted(track.album.images)[0]
if url:
metadata['mpris:artUrl'] = url
if track.disc_no:
metadata['xesam:discNumber'] = track.disc_no
if track.track_no:
metadata['xesam:trackNumber'] = track.track_no
return dbus.Dictionary(metadata, signature='sv')
def get_Volume(self):
volume = self.core.playback.volume.get()
if volume is None:
return 0
return volume / 100.0
def set_Volume(self, value):
if not self.get_CanControl():
logger.debug('Setting %s.Volume not allowed', PLAYER_IFACE)
return
if value is None:
return
elif value < 0:
self.core.playback.volume = 0
elif value > 1:
self.core.playback.volume = 100
elif 0 <= value <= 1:
self.core.playback.volume = int(value * 100)
def get_Position(self):
return self.core.playback.time_position.get() * 1000
def get_CanGoNext(self):
if not self.get_CanControl():
return False
current_tl_track = self.core.playback.current_tl_track.get()
next_tl_track = self.core.tracklist.next_track(current_tl_track).get()
return next_tl_track != current_tl_track
def get_CanGoPrevious(self):
if not self.get_CanControl():
return False
current_tl_track = self.core.playback.current_tl_track.get()
previous_tl_track = (
self.core.tracklist.previous_track(current_tl_track).get())
return previous_tl_track != current_tl_track
def get_CanPlay(self):
if not self.get_CanControl():
return False
current_tl_track = self.core.playback.current_tl_track.get()
next_tl_track = self.core.tracklist.next_track(current_tl_track).get()
return current_tl_track is not None or next_tl_track is not None
def get_CanPause(self):
if not self.get_CanControl():
return False
# NOTE Should be changed to vary based on capabilities of the current
# track if Mopidy starts supporting non-seekable media, like streams.
return True
def get_CanSeek(self):
if not self.get_CanControl():
return False
# NOTE Should be changed to vary based on capabilities of the current
# track if Mopidy starts supporting non-seekable media, like streams.
return True
def get_CanControl(self):
# NOTE This could be a setting for the end user to change.
return True
# --- Playlists interface methods
@dbus.service.method(dbus_interface=PLAYLISTS_IFACE)
def ActivatePlaylist(self, playlist_id):
logger.debug(
'%s.ActivatePlaylist(%r) called', PLAYLISTS_IFACE, playlist_id)
playlist_uri = self.get_playlist_uri(playlist_id)
playlist = self.core.playlists.lookup(playlist_uri).get()
if playlist and playlist.tracks:
tl_tracks = self.core.tracklist.add(playlist.tracks).get()
self.core.playback.play(tl_tracks[0])
@dbus.service.method(dbus_interface=PLAYLISTS_IFACE)
def GetPlaylists(self, index, max_count, order, reverse):
logger.debug(
'%s.GetPlaylists(%r, %r, %r, %r) called',
PLAYLISTS_IFACE, index, max_count, order, reverse)
playlists = self.core.playlists.playlists.get()
if order == 'Alphabetical':
playlists.sort(key=lambda p: p.name, reverse=reverse)
elif order == 'Modified':
playlists.sort(key=lambda p: p.last_modified, reverse=reverse)
elif order == 'User' and reverse:
playlists.reverse()
slice_end = index + max_count
playlists = playlists[index:slice_end]
results = [
(self.get_playlist_id(p.uri), p.name, '')
for p in playlists]
return dbus.Array(results, signature='(oss)')
# --- Playlists interface signals
@dbus.service.signal(dbus_interface=PLAYLISTS_IFACE, signature='(oss)')
def PlaylistChanged(self, playlist):
logger.debug('%s.PlaylistChanged signaled', PLAYLISTS_IFACE)
# Do nothing, as just calling the method is enough to emit the signal.
# --- Playlists interface properties
def get_PlaylistCount(self):
return len(self.core.playlists.playlists.get())
def get_Orderings(self):
return [
'Alphabetical', # Order by playlist.name
'Modified', # Order by playlist.last_modified
'User', # Don't change order
]
def get_ActivePlaylist(self):
playlist_is_valid = False
playlist = ('/', 'None', '')
return (playlist_is_valid, playlist)
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