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# -*- coding: utf-8 -*-
## musictracklistener.py
##
## Copyright (C) 2006 Gustavo Carneiro <gjcarneiro@gmail.com>
## Copyright (C) 2006 Nikos Kouremenos <kourem@gmail.com>
##
## This file is part of Gajim.
##
## Gajim is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published
## by the Free Software Foundation; version 3 only.
##
## Gajim is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Gajim. If not, see <http://www.gnu.org/licenses/>.
##
import os
import gobject
if __name__ == '__main__':
# install _() func before importing dbus_support
from common import i18n
from common import dbus_support
if dbus_support.supported:
import dbus
import dbus.glib
class MusicTrackInfo(object):
__slots__ = ['title', 'album', 'artist', 'duration', 'track_number',
'paused']
class MusicTrackListener(gobject.GObject):
__gsignals__ = {
'music-track-changed': (gobject.SIGNAL_RUN_LAST, None, (object,)),
}
_instance = None
@classmethod
def get(cls):
if cls._instance is None:
cls._instance = cls()
return cls._instance
def __init__(self):
super(MusicTrackListener, self).__init__()
self._last_playing_music = None
bus = dbus.SessionBus()
## MPRIS
bus.add_signal_receiver(self._mpris_music_track_change_cb, 'TrackChange',
'org.freedesktop.MediaPlayer')
bus.add_signal_receiver(self._mpris_playing_changed_cb, 'StatusChange',
'org.freedesktop.MediaPlayer')
bus.add_signal_receiver(self._player_name_owner_changed,
'NameOwnerChanged', 'org.freedesktop.DBus', arg0='org.freedesktop.MediaPlayer')
## Muine
bus.add_signal_receiver(self._muine_music_track_change_cb, 'SongChanged',
'org.gnome.Muine.Player')
bus.add_signal_receiver(self._player_name_owner_changed,
'NameOwnerChanged', 'org.freedesktop.DBus', arg0='org.gnome.Muine')
bus.add_signal_receiver(self._player_playing_changed_cb, 'StateChanged',
'org.gnome.Muine.Player')
## Rhythmbox
bus.add_signal_receiver(self._player_name_owner_changed,
'NameOwnerChanged', 'org.freedesktop.DBus', arg0='org.gnome.Rhythmbox')
bus.add_signal_receiver(self._rhythmbox_playing_changed_cb,
'playingChanged', 'org.gnome.Rhythmbox.Player')
bus.add_signal_receiver(self._player_playing_song_property_changed_cb,
'playingSongPropertyChanged', 'org.gnome.Rhythmbox.Player')
## Banshee
bus.add_signal_receiver(self._banshee_state_changed_cb,
'StateChanged', 'org.bansheeproject.Banshee.PlayerEngine')
bus.add_signal_receiver(self._player_name_owner_changed,
'NameOwnerChanged', 'org.freedesktop.DBus', arg0='org.bansheeproject.Banshee')
def _player_name_owner_changed(self, name, old, new):
if not new:
self.emit('music-track-changed', None)
def _player_playing_changed_cb(self, playing):
if playing:
self.emit('music-track-changed', self._last_playing_music)
else:
self.emit('music-track-changed', None)
def _player_playing_song_property_changed_cb(self, a, b, c, d):
if b == 'rb:stream-song-title':
self.emit('music-track-changed', self._last_playing_music)
def _mpris_properties_extract(self, song):
info = MusicTrackInfo()
if song.has_key('title'):
info.title = song['title']
else:
info.title = ''
if song.has_key('album'):
info.album = song['album']
else:
info.album = ''
if song.has_key('artist'):
info.artist = song['artist']
else:
info.artist = ''
if song.has_key('length'):
info.duration = int(song['length'])
else:
info.duration = 0
return info
def _mpris_playing_changed_cb(self, playing):
if playing == 0:
self.emit('music-track-changed', self._last_playing_music)
else:
self.emit('music-track-changed', None)
def _mpris_music_track_change_cb(self, arg):
self._last_playing_music = self._mpris_properties_extract(arg)
self.emit('music-track-changed', self._last_playing_music)
def _muine_properties_extract(self, song_string):
d = dict((x.strip() for x in s1.split(':', 1)) for s1 in \
song_string.split('\n'))
info = MusicTrackInfo()
info.title = d['title']
info.album = d['album']
info.artist = d['artist']
info.duration = int(d['duration'])
info.track_number = int(d['track_number'])
return info
def _muine_music_track_change_cb(self, arg):
info = self._muine_properties_extract(arg)
self.emit('music-track-changed', info)
def _rhythmbox_playing_changed_cb(self, playing):
if playing:
info = self.get_playing_track()
self.emit('music-track-changed', info)
else:
self.emit('music-track-changed', None)
def _rhythmbox_properties_extract(self, props):
info = MusicTrackInfo()
info.title = props['title']
info.album = props['album']
info.artist = props['artist']
info.duration = int(props['duration'])
info.track_number = int(props['track-number'])
return info
def _banshee_state_changed_cb(self, state):
if state == 'playing':
bus = dbus.SessionBus()
banshee = bus.get_object("org.bansheeproject.Banshee", "/org/bansheeproject/Banshee/PlayerEngine")
currentTrack = banshee.GetCurrentTrack()
self._last_playing_music = self._banshee_properties_extract(currentTrack)
self.emit('music-track-changed', self._last_playing_music)
elif state == 'paused':
self.emit('music-track-changed', None)
def _banshee_properties_extract(self, props):
info = MusicTrackInfo()
info.title = props['name']
info.album = props['album']
info.artist = props['artist']
info.duration = int(props['length'])
return info
def get_playing_track(self):
'''Return a MusicTrackInfo for the currently playing
song, or None if no song is playing'''
bus = dbus.SessionBus()
## Check Muine playing track
test = False
if hasattr(bus, 'name_has_owner'):
if bus.name_has_owner('org.gnome.Muine'):
test = True
elif dbus.dbus_bindings.bus_name_has_owner(bus.get_connection(),
'org.gnome.Muine'):
test = True
if test:
obj = bus.get_object('org.gnome.Muine', '/org/gnome/Muine/Player')
player = dbus.Interface(obj, 'org.gnome.Muine.Player')
if player.GetPlaying():
song_string = player.GetCurrentSong()
song = self._muine_properties_extract(song_string)
self._last_playing_music = song
return song
## Check Rhythmbox playing song
test = False
if hasattr(bus, 'name_has_owner'):
if bus.name_has_owner('org.gnome.Rhythmbox'):
test = True
elif dbus.dbus_bindings.bus_name_has_owner(bus.get_connection(),
'org.gnome.Rhythmbox'):
test = True
if test:
rbshellobj = bus.get_object('org.gnome.Rhythmbox',
'/org/gnome/Rhythmbox/Shell')
player = dbus.Interface(
bus.get_object('org.gnome.Rhythmbox',
'/org/gnome/Rhythmbox/Player'), 'org.gnome.Rhythmbox.Player')
rbshell = dbus.Interface(rbshellobj, 'org.gnome.Rhythmbox.Shell')
try:
uri = player.getPlayingUri()
except dbus.DBusException:
uri = None
if not uri:
return None
props = rbshell.getSongProperties(uri)
info = self._rhythmbox_properties_extract(props)
self._last_playing_music = info
return info
return None
# here we test :)
if __name__ == '__main__':
def music_track_change_cb(listener, music_track_info):
if music_track_info is None:
print "Stop!"
else:
print music_track_info.title
listener = MusicTrackListener.get()
listener.connect('music-track-changed', music_track_change_cb)
track = listener.get_playing_track()
if track is None:
print 'Now not playing anything'
else:
print 'Now playing: "%s" by %s' % (track.title, track.artist)
gobject.MainLoop().run()
# vim: se ts=3:
|
