configs/arch-config/scripts/polybar/player-mpris-tail.py

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2020-12-10 13:40:02 +01:00
#!/usr/bin/env python3
import sys
import dbus
import os
from operator import itemgetter
import argparse
import re
from urllib.parse import unquote
import time
from dbus.mainloop.glib import DBusGMainLoop
from gi.repository import GLib
DBusGMainLoop(set_as_default=True)
FORMAT_STRING = '{icon} {artist} - {title}'
FORMAT_REGEX = re.compile(r'(\{:(?P<tag>.*?)(:(?P<format>[wt])(?P<formatlen>\d+))?:(?P<text>.*?):\})', re.I)
FORMAT_TAG_REGEX = re.compile(r'(?P<format>[wt])(?P<formatlen>\d+)')
SAFE_TAG_REGEX = re.compile(r'[{}]')
class PlayerManager:
def __init__(self, blacklist = [], connect = True):
self.blacklist = blacklist
self._connect = connect
self._session_bus = dbus.SessionBus()
self.players = {}
self.print_queue = []
self.connected = False
self.player_states = {}
self.refreshPlayerList()
if self._connect:
self.connect()
loop = GLib.MainLoop()
try:
loop.run()
except KeyboardInterrupt:
print("interrupt received, stopping…")
def connect(self):
self._session_bus.add_signal_receiver(self.onOwnerChangedName, 'NameOwnerChanged')
self._session_bus.add_signal_receiver(self.onChangedProperties, 'PropertiesChanged',
path = '/org/mpris/MediaPlayer2',
sender_keyword='sender')
def onChangedProperties(self, interface, properties, signature, sender = None):
if sender in self.players:
player = self.players[sender]
# If we know this player, but haven't been able to set up a signal handler
if 'properties_changed' not in player._signals:
# Then trigger the signal handler manually
player.onPropertiesChanged(interface, properties, signature)
else:
# If we don't know this player, get its name and add it
bus_name = self.getBusNameFromOwner(sender)
if bus_name is None:
return
self.addPlayer(bus_name, sender)
player = self.players[sender]
player.onPropertiesChanged(interface, properties, signature)
def onOwnerChangedName(self, bus_name, old_owner, new_owner):
if self.busNameIsAPlayer(bus_name):
if new_owner and not old_owner:
self.addPlayer(bus_name, new_owner)
elif old_owner and not new_owner:
self.removePlayer(old_owner)
else:
self.changePlayerOwner(bus_name, old_owner, new_owner)
def getBusNameFromOwner(self, owner):
player_bus_names = [ bus_name for bus_name in self._session_bus.list_names() if self.busNameIsAPlayer(bus_name) ]
for player_bus_name in player_bus_names:
player_bus_owner = self._session_bus.get_name_owner(player_bus_name)
if owner == player_bus_owner:
return player_bus_name
def busNameIsAPlayer(self, bus_name):
return bus_name.startswith('org.mpris.MediaPlayer2') and bus_name.split('.')[3] not in self.blacklist
def refreshPlayerList(self):
player_bus_names = [ bus_name for bus_name in self._session_bus.list_names() if self.busNameIsAPlayer(bus_name) ]
for player_bus_name in player_bus_names:
self.addPlayer(player_bus_name)
if self.connected != True:
self.connected = True
self.printQueue()
def addPlayer(self, bus_name, owner = None):
player = Player(self._session_bus, bus_name, owner = owner, connect = self._connect, _print = self.print)
self.players[player.owner] = player
def removePlayer(self, owner):
if owner in self.players:
self.players[owner].disconnect()
del self.players[owner]
# If there are no more players, clear the output
if len(self.players) == 0:
_printFlush(ICON_NONE)
# Else, print the output of the next active player
else:
players = self.getSortedPlayerOwnerList()
if len(players) > 0:
self.players[players[0]].printStatus()
def changePlayerOwner(self, bus_name, old_owner, new_owner):
player = Player(self._session_bus, bus_name, owner = new_owner, connect = self._connect, _print = self.print)
self.players[new_owner] = player
del self.players[old_owner]
# Get a list of player owners sorted by current status and age
def getSortedPlayerOwnerList(self):
players = [
{
'number': int(owner.split('.')[-1]),
'status': 2 if player.status == 'playing' else 1 if player.status == 'paused' else 0,
'owner': owner
}
for owner, player in self.players.items()
]
return [ info['owner'] for info in reversed(sorted(players, key=itemgetter('status', 'number'))) ]
# Get latest player that's currently playing
def getCurrentPlayer(self):
playing_players = [
player_owner for player_owner in self.getSortedPlayerOwnerList()
if
self.players[player_owner].status == 'playing' or
self.players[player_owner].status == 'paused'
]
return self.players[playing_players[0]] if playing_players else None
def print(self, status, player):
self.player_states[player.bus_name] = status
if self.connected:
current_player = self.getCurrentPlayer()
if current_player != None:
_printFlush(self.player_states[current_player.bus_name])
else:
_printFlush(ICON_STOPPED)
else:
self.print_queue.append([status, player])
def printQueue(self):
for args in self.print_queue:
self.print(args[0], args[1])
self.print_queue.clear()
class Player:
def __init__(self, session_bus, bus_name, owner = None, connect = True, _print = None):
self._session_bus = session_bus
self.bus_name = bus_name
self._disconnecting = False
self.__print = _print
self.metadata = {
'artist' : '',
'album' : '',
'title' : '',
'track' : 0
}
self._rate = 1.
self._positionAtLastUpdate = 0.
self._timeAtLastUpdate = time.time()
self._positionTimerRunning = False
self._metadata = None
self.status = 'stopped'
self.icon = ICON_NONE
self.icon_reversed = ICON_PLAYING
if owner is not None:
self.owner = owner
else:
self.owner = self._session_bus.get_name_owner(bus_name)
self._obj = self._session_bus.get_object(self.bus_name, '/org/mpris/MediaPlayer2')
self._properties_interface = dbus.Interface(self._obj, dbus_interface='org.freedesktop.DBus.Properties')
self._introspect_interface = dbus.Interface(self._obj, dbus_interface='org.freedesktop.DBus.Introspectable')
self._media_interface = dbus.Interface(self._obj, dbus_interface='org.mpris.MediaPlayer2')
self._player_interface = dbus.Interface(self._obj, dbus_interface='org.mpris.MediaPlayer2.Player')
self._introspect = self._introspect_interface.get_dbus_method('Introspect', dbus_interface=None)
self._getProperty = self._properties_interface.get_dbus_method('Get', dbus_interface=None)
self._playerPlay = self._player_interface.get_dbus_method('Play', dbus_interface=None)
self._playerPause = self._player_interface.get_dbus_method('Pause', dbus_interface=None)
self._playerPlayPause = self._player_interface.get_dbus_method('PlayPause', dbus_interface=None)
self._playerStop = self._player_interface.get_dbus_method('Stop', dbus_interface=None)
self._playerPrevious = self._player_interface.get_dbus_method('Previous', dbus_interface=None)
self._playerNext = self._player_interface.get_dbus_method('Next', dbus_interface=None)
self._playerRaise = self._media_interface.get_dbus_method('Raise', dbus_interface=None)
self._signals = {}
self.refreshPosition()
self.refreshStatus()
self.refreshMetadata()
if connect:
self.printStatus()
self.connect()
def play(self):
self._playerPlay()
def pause(self):
self._playerPause()
def playpause(self):
self._playerPlayPause()
def stop(self):
self._playerStop()
def previous(self):
self._playerPrevious()
def next(self):
self._playerNext()
def raisePlayer(self):
self._playerRaise()
def connect(self):
if self._disconnecting is not True:
introspect_xml = self._introspect(self.bus_name, '/')
if 'TrackMetadataChanged' in introspect_xml:
self._signals['track_metadata_changed'] = self._session_bus.add_signal_receiver(self.onMetadataChanged, 'TrackMetadataChanged', self.bus_name)
self._signals['seeked'] = self._player_interface.connect_to_signal('Seeked', self.onSeeked)
self._signals['properties_changed'] = self._properties_interface.connect_to_signal('PropertiesChanged', self.onPropertiesChanged)
def disconnect(self):
self._disconnecting = True
for signal_name, signal_handler in list(self._signals.items()):
signal_handler.remove()
del self._signals[signal_name]
def refreshStatus(self):
# Some clients (VLC) will momentarily create a new player before removing it again
# so we can't be sure the interface still exists
try:
self.status = str(self._getProperty('org.mpris.MediaPlayer2.Player', 'PlaybackStatus')).lower()
self.updateIcon()
self.checkPositionTimer()
except dbus.exceptions.DBusException:
self.disconnect()
def refreshMetadata(self):
# Some clients (VLC) will momentarily create a new player before removing it again
# so we can't be sure the interface still exists
try:
self._metadata = self._getProperty('org.mpris.MediaPlayer2.Player', 'Metadata')
self._parseMetadata()
except dbus.exceptions.DBusException:
self.disconnect()
def updateIcon(self):
self.icon = (
ICON_PLAYING if self.status == 'playing' else
ICON_PAUSED if self.status == 'paused' else
ICON_STOPPED if self.status == 'stopped' else
ICON_NONE
)
self.icon_reversed = (
ICON_PAUSED if self.status == 'playing' else
ICON_PLAYING
)
def _print(self, status):
self.__print(status, self)
def _parseMetadata(self):
if self._metadata != None:
# Obtain properties from _metadata
_artist = _getProperty(self._metadata, 'xesam:artist', [''])
_album = _getProperty(self._metadata, 'xesam:album', '')
_title = _getProperty(self._metadata, 'xesam:title', '')
_track = _getProperty(self._metadata, 'xesam:trackNumber', '')
_genre = _getProperty(self._metadata, 'xesam:genre', [''])
_disc = _getProperty(self._metadata, 'xesam:discNumber', '')
_length = _getProperty(self._metadata, 'xesam:length', 0) or _getProperty(self._metadata, 'mpris:length', 0)
_length_int = _length if type(_length) is int else int(float(_length))
_date = _getProperty(self._metadata, 'xesam:contentCreated', '')
_year = _date[0:4] if len(_date) else ''
_url = _getProperty(self._metadata, 'xesam:url', '')
_cover = _getProperty(self._metadata, 'xesam:artUrl', '') or _getProperty(self._metadata, 'mpris:artUrl', '')
_duration = _getDuration(_length_int)
# Update metadata
self.metadata['artist'] = re.sub(SAFE_TAG_REGEX, """\1\1""", _firstIfList(_artist))
self.metadata['album'] = re.sub(SAFE_TAG_REGEX, """\1\1""", _firstIfList(_album))
self.metadata['title'] = re.sub(SAFE_TAG_REGEX, """\1\1""", _firstIfList(_title))
self.metadata['track'] = _track
self.metadata['genre'] = re.sub(SAFE_TAG_REGEX, """\1\1""", _firstIfList(_genre))
self.metadata['disc'] = _disc
self.metadata['date'] = re.sub(SAFE_TAG_REGEX, """\1\1""", _date)
self.metadata['year'] = re.sub(SAFE_TAG_REGEX, """\1\1""", _year)
self.metadata['url'] = _url
self.metadata['filename'] = os.path.basename(_url)
self.metadata['length'] = _length_int
self.metadata['cover'] = re.sub(SAFE_TAG_REGEX, """\1\1""", _firstIfList(_cover))
self.metadata['duration'] = _duration
def onMetadataChanged(self, track_id, metadata):
self.refreshMetadata()
self.printStatus()
def onPropertiesChanged(self, interface, properties, signature):
updated = False
if dbus.String('Metadata') in properties:
_metadata = properties[dbus.String('Metadata')]
if _metadata != self._metadata:
self._metadata = _metadata
self._parseMetadata()
updated = True
if dbus.String('PlaybackStatus') in properties:
status = str(properties[dbus.String('PlaybackStatus')]).lower()
if status != self.status:
self.status = status
self.checkPositionTimer()
self.updateIcon()
updated = True
if dbus.String('Rate') in properties and dbus.String('PlaybackStatus') not in properties:
self.refreshStatus()
if NEEDS_POSITION and dbus.String('Rate') in properties:
rate = properties[dbus.String('Rate')]
if rate != self._rate:
self._rate = rate
self.refreshPosition()
if updated:
self.refreshPosition()
self.printStatus()
def checkPositionTimer(self):
if NEEDS_POSITION and self.status == 'playing' and not self._positionTimerRunning:
self._positionTimerRunning = True
GLib.timeout_add_seconds(1, self._positionTimer)
def onSeeked(self, position):
self.refreshPosition()
self.printStatus()
def _positionTimer(self):
self.printStatus()
self._positionTimerRunning = self.status == 'playing'
return self._positionTimerRunning
def refreshPosition(self):
try:
time_us = self._getProperty('org.mpris.MediaPlayer2.Player', 'Position')
except dbus.exceptions.DBusException:
time_us = 0
self._timeAtLastUpdate = time.time()
self._positionAtLastUpdate = time_us / 1000000
def _getPosition(self):
if self.status == 'playing':
return self._positionAtLastUpdate + self._rate * (time.time() - self._timeAtLastUpdate)
else:
return self._positionAtLastUpdate
def _statusReplace(self, match, metadata):
tag = match.group('tag')
format = match.group('format')
formatlen = match.group('formatlen')
text = match.group('text')
tag_found = False
reversed_tag = False
if tag.startswith('-'):
tag = tag[1:]
reversed_tag = True
if format is None:
tag_is_format_match = re.match(FORMAT_TAG_REGEX, tag)
if tag_is_format_match:
format = tag_is_format_match.group('format')
formatlen = tag_is_format_match.group('formatlen')
tag_found = True
if format is not None:
text = text.format_map(CleanSafeDict(**metadata))
if format == 'w':
formatlen = int(formatlen)
text = text[:formatlen]
elif format == 't':
formatlen = int(formatlen)
if len(text) > formatlen:
text = text[:max(formatlen - len(TRUNCATE_STRING), 0)] + TRUNCATE_STRING
if tag_found is False and tag in metadata and len(metadata[tag]):
tag_found = True
if reversed_tag:
tag_found = not tag_found
if tag_found:
return text
else:
return ''
def printStatus(self):
if self.status in [ 'playing', 'paused' ]:
metadata = { **self.metadata, 'icon': self.icon, 'icon-reversed': self.icon_reversed }
if NEEDS_POSITION:
metadata['position'] = time.strftime("%M:%S", time.gmtime(self._getPosition()))
# replace metadata tags in text
text = re.sub(FORMAT_REGEX, lambda match: self._statusReplace(match, metadata), FORMAT_STRING)
# restore polybar tag formatting and replace any remaining metadata tags after that
try:
text = re.sub(r'􏿿p􏿿(.*?)􏿿p􏿿(.*?)􏿿p􏿿(.*?)􏿿p􏿿', r'%{\1}\2%{\3}', text.format_map(CleanSafeDict(**metadata)))
except:
print("Invalid format string")
self._print(text)
else:
self._print(ICON_STOPPED)
def _dbusValueToPython(value):
if isinstance(value, dbus.Dictionary):
return {_dbusValueToPython(key): _dbusValueToPython(value) for key, value in value.items()}
elif isinstance(value, dbus.Array):
return [ _dbusValueToPython(item) for item in value ]
elif isinstance(value, dbus.Boolean):
return int(value) == 1
elif (
isinstance(value, dbus.Byte) or
isinstance(value, dbus.Int16) or
isinstance(value, dbus.UInt16) or
isinstance(value, dbus.Int32) or
isinstance(value, dbus.UInt32) or
isinstance(value, dbus.Int64) or
isinstance(value, dbus.UInt64)
):
return int(value)
elif isinstance(value, dbus.Double):
return float(value)
elif (
isinstance(value, dbus.ObjectPath) or
isinstance(value, dbus.Signature) or
isinstance(value, dbus.String)
):
return unquote(str(value))
def _getProperty(properties, property, default = None):
value = default
if not isinstance(property, dbus.String):
property = dbus.String(property)
if property in properties:
value = properties[property]
return _dbusValueToPython(value)
else:
return value
def _getDuration(t: int):
seconds = t / 1000000
return time.strftime("%M:%S", time.gmtime(seconds))
def _firstIfList(_value):
return _value[0] if type(_value) is list and len(_value) else _value
class CleanSafeDict(dict):
def __missing__(self, key):
return '{{{}}}'.format(key)
"""
Seems to assure print() actually prints when no terminal is connected
"""
_last_status = ''
def _printFlush(status, **kwargs):
global _last_status
if status != _last_status:
print(status, **kwargs)
sys.stdout.flush()
_last_status = status
parser = argparse.ArgumentParser()
parser.add_argument('command', help="send the given command to the active player",
choices=[ 'play', 'pause', 'play-pause', 'stop', 'previous', 'next', 'status', 'list', 'current', 'metadata', 'raise' ],
default=None,
nargs='?')
parser.add_argument('-b', '--blacklist', help="ignore a player by it's bus name. Can be be given multiple times (e.g. -b vlc -b audacious)",
action='append',
metavar="BUS_NAME",
default=[])
parser.add_argument('-f', '--format', default='{icon} {:artist:{artist} - :}{:title:{title}:}{:-title:{filename}:}')
parser.add_argument('--truncate-text', default='')
parser.add_argument('--icon-playing', default='')
parser.add_argument('--icon-paused', default='')
parser.add_argument('--icon-stopped', default='')
parser.add_argument('--icon-none', default='')
args = parser.parse_args()
FORMAT_STRING = re.sub(r'%\{(.*?)\}(.*?)%\{(.*?)\}', r'􏿿p􏿿\1􏿿p􏿿\2􏿿p􏿿\3􏿿p􏿿', args.format)
NEEDS_POSITION = "{position}" in FORMAT_STRING
TRUNCATE_STRING = args.truncate_text
ICON_PLAYING = args.icon_playing
ICON_PAUSED = args.icon_paused
ICON_STOPPED = args.icon_stopped
ICON_NONE = args.icon_none
if args.command is None:
PlayerManager(blacklist = args.blacklist)
else:
player_manager = PlayerManager(blacklist = args.blacklist, connect = False)
current_player = player_manager.getCurrentPlayer()
if args.command == 'play' and current_player:
current_player.play()
elif args.command == 'pause' and current_player:
current_player.pause()
elif args.command == 'play-pause' and current_player:
current_player.playpause()
elif args.command == 'stop' and current_player:
current_player.stop()
elif args.command == 'previous' and current_player:
current_player.previous()
elif args.command == 'next' and current_player:
current_player.next()
elif args.command == 'status' and current_player:
current_player.printStatus()
elif args.command == 'list':
print("\n".join(sorted([
"{} : {}".format(player.bus_name.split('.')[3], player.status)
for player in player_manager.players.values() ])))
elif args.command == 'current' and current_player:
print("{} : {}".format(current_player.bus_name.split('.')[3], current_player.status))
elif args.command == 'metadata' and current_player:
print(_dbusValueToPython(current_player._metadata))
elif args.command == 'raise' and current_player:
current_player.raisePlayer()