PlexKodiConnect/resources/lib/playqueue.py

233 lines
9.9 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Monitors the Kodi playqueue and adjusts the Plex playqueue accordingly
"""
from __future__ import absolute_import, division, unicode_literals
from builtins import range
from logging import getLogger
import copy
import xbmc
from .plex_api import API
from . import playlist_func as PL, plex_functions as PF
from . import backgroundthread, utils, json_rpc as js, app, variables as v
###############################################################################
LOG = getLogger('PLEX.playqueue')
PLUGIN = 'plugin://%s' % v.ADDON_ID
# Our PKC playqueues (3 instances of Playqueue_Object())
PLAYQUEUES = []
###############################################################################
def init_playqueues():
"""
Call this once on startup to initialize the PKC playqueue objects in
the list PLAYQUEUES
"""
if PLAYQUEUES:
LOG.debug('Playqueues have already been initialized')
return
# Initialize Kodi playqueues
with app.APP.lock_playqueues:
for i in (0, 1, 2):
# Just in case the Kodi response is not sorted correctly
for queue in js.get_playlists():
if queue['playlistid'] != i:
continue
playqueue = PL.Playqueue_Object()
playqueue.playlistid = i
playqueue.type = queue['type']
# Initialize each Kodi playlist
if playqueue.type == v.KODI_TYPE_AUDIO:
playqueue.kodi_pl = xbmc.PlayList(xbmc.PLAYLIST_MUSIC)
elif playqueue.type == v.KODI_TYPE_VIDEO:
playqueue.kodi_pl = xbmc.PlayList(xbmc.PLAYLIST_VIDEO)
else:
# Currently, only video or audio playqueues available
playqueue.kodi_pl = xbmc.PlayList(xbmc.PLAYLIST_VIDEO)
# Overwrite 'picture' with 'photo'
playqueue.type = v.KODI_TYPE_PHOTO
PLAYQUEUES.append(playqueue)
LOG.debug('Initialized the Kodi playqueues: %s', PLAYQUEUES)
def get_playqueue_from_type(kodi_playlist_type):
"""
Returns the playqueue according to the kodi_playlist_type ('video',
'audio', 'picture') passed in
"""
for playqueue in PLAYQUEUES:
if playqueue.type == kodi_playlist_type:
break
else:
raise ValueError('Wrong playlist type passed in: %s',
kodi_playlist_type)
return playqueue
def init_playqueue_from_plex_children(plex_id, transient_token=None):
"""
Init a new playqueue e.g. from an album. Alexa does this
Returns the playqueue
"""
xml = PF.GetAllPlexChildren(plex_id)
try:
xml[0].attrib
except (TypeError, IndexError, AttributeError):
LOG.error('Could not download the PMS xml for %s', plex_id)
return
playqueue = get_playqueue_from_type(
v.KODI_PLAYLIST_TYPE_FROM_PLEX_TYPE[xml[0].attrib['type']])
playqueue.clear()
for i, child in enumerate(xml):
api = API(child)
try:
PL.add_item_to_playlist(playqueue, i, plex_id=api.plex_id)
except PL.PlaylistError:
LOG.error('Could not add Plex item to our playlist: %s, %s',
child.tag, child.attrib)
playqueue.plex_transient_token = transient_token
LOG.debug('Firing up Kodi player')
app.APP.player.play(playqueue.kodi_pl, None, False, 0)
return playqueue
class PlayqueueMonitor(backgroundthread.KillableThread):
"""
Unfortunately, Kodi does not tell if items within a Kodi playqueue
(playlist) are swapped. This is what this monitor is for. Don't replace
this mechanism till Kodi's implementation of playlists has improved
"""
def _compare_playqueues(self, playqueue, new_kodi_playqueue):
"""
Used to poll the Kodi playqueue and update the Plex playqueue if needed
"""
old = list(playqueue.items)
# We might append to new_kodi_playqueue but will need the original
# still back in the main loop
new = copy.deepcopy(new_kodi_playqueue)
index = list(range(0, len(old)))
LOG.debug('Comparing new Kodi playqueue %s with our play queue %s',
new, old)
for i, new_item in enumerate(new):
if (new_item['file'].startswith('plugin://') and
not new_item['file'].startswith(PLUGIN)):
# Ignore new media added by other addons
continue
for j, old_item in enumerate(old):
if self.should_suspend() or self.should_cancel():
# Chances are that we got an empty Kodi playlist due to
# Kodi exit
return
try:
if (old_item.file.startswith('plugin://') and
not old_item.file.startswith(PLUGIN)):
# Ignore media by other addons
continue
except AttributeError:
# were not passed a filename; ignore
pass
if 'id' in new_item:
identical = (old_item.kodi_id == new_item['id'] and
old_item.kodi_type == new_item['type'])
else:
try:
plex_id = int(utils.REGEX_PLEX_ID.findall(new_item['file'])[0])
except IndexError:
LOG.debug('Comparing paths directly as a fallback')
identical = old_item.file == new_item['file']
else:
identical = plex_id == old_item.plex_id
if j == 0 and identical:
del old[j], index[j]
break
elif identical:
LOG.debug('Playqueue item %s moved to position %s',
i + j, i)
try:
PL.move_playlist_item(playqueue, i + j, i)
except PL.PlaylistError:
LOG.error('Could not modify playqueue positions')
LOG.error('This is likely caused by mixing audio and '
'video tracks in the Kodi playqueue')
del old[j], index[j]
break
else:
LOG.debug('Detected new Kodi element at position %s: %s ',
i, new_item)
try:
if playqueue.id is None:
PL.init_plex_playqueue(playqueue, kodi_item=new_item)
else:
PL.add_item_to_plex_playqueue(playqueue,
i,
kodi_item=new_item)
except PL.PlaylistError:
# Could not add the element
pass
except KeyError:
# Catches KeyError from PL.verify_kodi_item()
# Hack: Kodi already started playback of a new item and we
# started playback already using kodimonitors
# PlayBackStart(), but the Kodi playlist STILL only shows
# the old element. Hence ignore playlist difference here
LOG.debug('Detected an outdated Kodi playlist - ignoring')
return
except IndexError:
# This is really a hack - happens when using Addon Paths
# and repeatedly starting the same element. Kodi will then
# not pass kodi id nor file path AND will also not
# start-up playback. Hence kodimonitor kicks off playback.
# Also see kodimonitor.py - _playlist_onadd()
pass
else:
for j in range(i, len(index)):
index[j] += 1
for i in reversed(index):
if self.should_suspend() or self.should_cancel():
# Chances are that we got an empty Kodi playlist due to
# Kodi exit
return
LOG.debug('Detected deletion of playqueue element at pos %s', i)
try:
PL.delete_playlist_item_from_PMS(playqueue, i)
except PL.PlaylistError:
LOG.error('Could not delete PMS element from position %s', i)
LOG.error('This is likely caused by mixing audio and '
'video tracks in the Kodi playqueue')
LOG.debug('Done comparing playqueues')
def run(self):
LOG.info("----===## Starting PlayqueueMonitor ##===----")
app.APP.register_thread(self)
try:
self._run()
finally:
app.APP.deregister_thread(self)
LOG.info("----===## PlayqueueMonitor stopped ##===----")
def _run(self):
while not self.should_cancel():
if self.should_suspend():
if self.wait_while_suspended():
return
with app.APP.lock_playqueues:
for playqueue in PLAYQUEUES:
kodi_pl = js.playlist_get_items(playqueue.playlistid)
if playqueue.old_kodi_pl != kodi_pl:
if playqueue.id is None and (not app.SYNC.direct_paths or
app.PLAYSTATE.context_menu_play):
# Only initialize if directly fired up using direct
# paths. Otherwise let default.py do its magic
LOG.debug('Not yet initiating playback')
else:
# compare old and new playqueue
self._compare_playqueues(playqueue, kodi_pl)
playqueue.old_kodi_pl = list(kodi_pl)
self.sleep(0.2)