Switch to stream playback, part I

resources/lib/entrypoint.py

@@ -217,7 +217,8 @@ def show_listing(xml, plex_type=None, section_id=None, synched=True, key=None,
         # Need to chain keys for navigation
         widgets.KEY = key
     # Process all items to show
-    widgets.attach_kodi_ids(xml)
+    if synched:
+        widgets.attach_kodi_ids(xml)
     all_items = widgets.process_method_on_list(widgets.generate_item, xml)
     all_items = widgets.process_method_on_list(widgets.prepare_listitem,
                                                all_items)

resources/lib/playstrm.py

@@ -0,0 +1,255 @@
+# -*- coding: utf-8 -*-
+from __future__ import absolute_import, division, unicode_literals
+from logging import getLogger
+import urllib
+
+import xbmc
+import xbmcgui
+
+from .plex_api import API
+from . import plex_function as PF, utils, json_rpc, variables as v, \
+    widgets
+
+
+LOG = getLogger('PLEX.playstrm')
+
+
+class PlayStrmException(Exception):
+    """
+    Any Exception associated with playstrm
+    """
+    pass
+
+
+class PlayStrm(object):
+    '''
+    Workflow: Strm that calls our webservice in database. When played, the
+    webserivce returns a dummy file to play. Meanwhile, PlayStrm adds the real
+    listitems for items to play to the playlist.
+    '''
+    def __init__(self, params, server_id=None):
+        LOG.debug('Starting PlayStrm with server_id %s, params: %s',
+                  server_id, params)
+        self.xml = None
+        self.api = None
+        self.start_index = None
+        self.index = None
+        self.server_id = server_id
+        self.plex_id = utils.cast(int, params['plex_id'])
+        self.plex_type = params.get('plex_type')
+        if params.get('synched') and params['synched'].lower() == 'false':
+            self.synched = False
+        else:
+            self.synched = True
+        self._get_xml()
+        self.name = self.api.title()
+        self.kodi_id = utils.cast(int, params.get('kodi_id'))
+        self.kodi_type = params.get('kodi_type')
+        if ((self.kodi_id is None or self.kodi_type is None) and
+                self.xml[0].get('pkc_db_item')):
+            self.kodi_id = self.xml[0].get('pkc_db_item')['kodi_id']
+            self.kodi_type = self.xml[0].get('pkc_db_item')['kodi_type']
+        self.transcode = params.get('transcode')
+        if self.transcode is None:
+            self.transcode = utils.settings('playFromTranscode.bool') if utils.settings('playFromStream.bool') else None
+        if utils.window('plex.playlist.audio.bool'):
+            LOG.info('Audio playlist detected')
+            self.kodi_playlist = xbmc.PlayList(xbmc.PLAYLIST_MUSIC)
+        else:
+            self.kodi_playlist = xbmc.PlayList(xbmc.PLAYLIST_VIDEO)
+
+    def __repr__(self):
+        return ("{{"
+                "'name': '{self.name}', "
+                "'plex_id': {self.plex_id}, "
+                "'plex_type': '{self.plex_type}', "
+                "'kodi_id': {self.kodi_id}, "
+                "'kodi_type': '{self.kodi_type}', "
+                "'server_id': '{self.server_id}', "
+                "'transcode': {self.transcode}, "
+                "'start_index': {self.start_index}, "
+                "'index': {self.index}"
+                "}}").format(self=self).encode('utf-8')
+    __str__ = __repr__
+
+    def add_to_playlist(self, kodi_id, kodi_type, index=None, playlistid=None):
+        playlistid = playlistid or self.kodi_playlist.getPlayListId()
+        LOG.debug('Adding kodi_id %s, kodi_type %s to playlist %s at index %s',
+                  kodi_id, kodi_type, playlistid, index)
+        if index is None:
+            json_rpc.playlist_add(playlistid, {'%sid' % kodi_type: kodi_id})
+        else:
+            json_rpc.playlist_insert({'playlistid': playlistid,
+                                      'position': index,
+                                      'item': {'%sid' % kodi_type: kodi_id}})
+
+    def remove_from_playlist(self, index):
+        LOG.debug('Removing playlist item number %s from %s', index, self)
+        json_rpc.playlist_remove(self.kodi_playlist.getPlayListId(),
+                                 index)
+
+    def _get_xml(self):
+        self.xml = PF.GetPlexMetadata(self.plex_id)
+        if self.xml in (None, 401):
+            raise PlayStrmException('No xml received from the PMS')
+        if self.synched:
+            # Adds a new key 'pkc_db_item' to self.xml[0].attrib
+            widgets.attach_kodi_ids(self.xml)
+        else:
+            self.xml[0].set('pkc_db_item', None)
+        self.api = API(self.xml[0])
+
+    def start_playback(self, index=0):
+        LOG.debug('Starting playback at %s', index)
+        xbmc.Player().play(self.kodi_playlist, startpos=index, windowed=False)
+
+    def play(self, start_position=None, delayed=True):
+        '''
+        Create and add listitems to the Kodi playlist.
+        '''
+        if start_position is not None:
+            self.start_index = start_position
+        else:
+            self.start_index = max(self.kodi_playlist.getposition(), 0)
+        self.index = self.start_index
+        listitem = xbmcgui.ListItem()
+        self._set_playlist(listitem)
+        LOG.info('Initiating play for %s', self)
+        if not delayed:
+            self.start_playback(self.start_index)
+        return self.start_index
+
+    def play_folder(self, position=None):
+        '''
+        When an entire queue is requested, If requested from Kodi, kodi_type is
+        provided, add as Kodi would, otherwise queue playlist items using strm
+        links to setup playback later.
+        '''
+        self.start_index = position or max(self.kodi_playlist.size(), 0)
+        self.index = self.start_index + 1
+        LOG.info('Play folder plex_id %s, index: %s', self.plex_id, self.index)
+        if self.kodi_id and self.kodi_type:
+            self.add_to_playlist(self.kodi_id, self.kodi_type, self.index)
+        else:
+            listitem = widgets.get_listitem(self.xml[0])
+            url = 'http://127.0.0.1:%s/plex/play/file.strm' % v.WEBSERVICE_PORT
+            args = {
+                'mode': 'play',
+                'plex_id': self.plex_id,
+                'plex_type': self.api.plex_type()
+            }
+            if self.kodi_id:
+                args['kodi_id'] = self.kodi_id
+            if self.kodi_type:
+                args['kodi_type'] = self.kodi_type
+            if self.server_id:
+                args['server_id'] = self.server_id
+            if self.transcode:
+                args['transcode'] = True
+            url = '%s?%s' % (url, urllib.urlencode(args))
+            listitem.setPath(url)
+            self.kodi_playlist.add(url=url,
+                                   listitem=listitem,
+                                   index=self.index)
+        return self.index
+
+    def _set_playlist(self, listitem):
+        '''
+        Verify seektime, set intros, set main item and set additional parts.
+        Detect the seektime for video type content. Verify the default video
+        action set in Kodi for accurate resume behavior.
+        '''
+        seektime = self._resume()
+        if (not seektime and self.plex_type == v.PLEX_TYPE_MOVIE and
+                utils.settings('enableCinema') == 'true'):
+            self._set_intros()
+
+        play = playutils.PlayUtilsStrm(self.xml, self.transcode, self.server_id, self.info['Server'])
+        source = play.select_source(play.get_sources())
+
+        if not source:
+            raise PlayStrmException('Playback selection cancelled')
+
+        play.set_external_subs(source, listitem)
+        self.set_listitem(self.xml, listitem, self.kodi_id, seektime)
+        listitem.setPath(self.xml['PlaybackInfo']['Path'])
+        playutils.set_properties(self.xml, self.xml['PlaybackInfo']['Method'], self.server_id)
+
+        self.kodi_playlist.add(url=self.xml['PlaybackInfo']['Path'], listitem=listitem, index=self.index)
+        self.index += 1
+
+        if self.xml.get('PartCount'):
+            self._set_additional_parts()
+
+    def _resume(self):
+        '''
+        Resume item if available. Returns bool or raise an PlayStrmException if
+        resume was cancelled by user.
+        '''
+        seektime = utils.window('plex.resume')
+        utils.window('plex.resume', clear=True)
+        seektime = seektime == 'true' if seektime else None
+        auto_play = utils.window('plex.autoplay.bool')
+        if auto_play:
+            seektime = False
+            LOG.info('Skip resume for autoplay')
+        elif seektime is None:
+            resume = self.api.resume_point()
+            if resume:
+                seektime = resume_dialog(resume)
+                LOG.info('Resume: %s', seektime)
+                if seektime is None:
+                    raise PlayStrmException('User backed out of resume dialog.')
+            # Todo: Probably need to have a look here
+            utils.window('plex.autoplay.bool', value='true')
+        return seektime
+
+    def _set_intros(self):
+        '''
+        if we have any play them when the movie/show is not being resumed.
+        '''
+        if self.info['Intros']['Items']:
+            enabled = True
+
+            if utils.settings('askCinema') == 'true':
+
+                resp = dialog('yesno', heading='{emby}', line1=_(33016))
+                if not resp:
+
+                    enabled = False
+                    LOG.info('Skip trailers.')
+
+            if enabled:
+                for intro in self.info['Intros']['Items']:
+
+                    listitem = xbmcgui.ListItem()
+                    LOG.info('[ intro/%s/%s ] %s', intro['plex_id'], self.index, intro['Name'])
+
+                    play = playutils.PlayUtilsStrm(intro, False, self.server_id, self.info['Server'])
+                    source = play.select_source(play.get_sources())
+                    self.set_listitem(intro, listitem, intro=True)
+                    listitem.setPath(intro['PlaybackInfo']['Path'])
+                    playutils.set_properties(intro, intro['PlaybackInfo']['Method'], self.server_id)
+
+                    self.kodi_playlist.add(url=intro['PlaybackInfo']['Path'], listitem=listitem, index=self.index)
+                    self.index += 1
+
+                    utils.window('plex.skip.%s' % intro['plex_id'], value='true')
+
+    def _set_additional_parts(self):
+        ''' Create listitems and add them to the stack of playlist.
+        '''
+        for part in self.info['AdditionalParts']['Items']:
+
+            listitem = xbmcgui.ListItem()
+            LOG.info('[ part/%s/%s ] %s', part['plex_id'], self.index, part['Name'])
+
+            play = playutils.PlayUtilsStrm(part, self.transcode, self.server_id, self.info['Server'])
+            source = play.select_source(play.get_sources())
+            play.set_external_subs(source, listitem)
+            self.set_listitem(part, listitem)
+            listitem.setPath(part['PlaybackInfo']['Path'])
+            playutils.set_properties(part, part['PlaybackInfo']['Method'], self.server_id)
+
+            self.kodi_playlist.add(url=part['PlaybackInfo']['Path'], listitem=listitem, index=self.index)
+            self.index += 1

resources/lib/plex_db/__init__.py

@@ -12,3 +12,18 @@ from .sections import Sections
 
 class PlexDB(PlexDBBase, TVShows, Movies, Music, Playlists, Sections):
     pass
+
+
+def kodi_from_plex(plex_id, plex_type=None):
+    """
+    Returns the tuple (kodi_id, kodi_type) for plex_id. Faster, if plex_type
+    is provided
+
+    Returns (None, None) if unsuccessful
+    """
+    with PlexDB(lock=False) as plexdb:
+        db_item = plexdb.item_by_id(plex_id, plex_type)
+    if db_item:
+        return (db_item['kodi_id'], db_item['kodi_type'])
+    else:
+        return None, None

resources/lib/service_entry.py

@@ -10,6 +10,7 @@ from . import initialsetup
 from . import kodimonitor
 from . import sync, library_sync
 from . import websocket_client
+from . import webservice
 from . import plex_companion
 from . import plex_functions as PF, playqueue as PQ
 from . import playback_starter
@@ -433,6 +434,7 @@ class Service(object):
         self.setup.setup()
 
         # Initialize important threads
+        self.webservice = webservice.WebService()
         self.ws = websocket_client.PMS_Websocket()
         self.alexa = websocket_client.Alexa_Websocket()
         self.sync = sync.Sync()
@@ -494,6 +496,12 @@ class Service(object):
                 xbmc.sleep(100)
                 continue
 
+            if self.webservice is not None and not self.webservice.is_alive():
+                LOG.info('Restarting webservice')
+                self.webservice.abort()
+                self.webservice = webservice.WebService()
+                self.webservice.start()
+
             # Before proceeding, need to make sure:
             # 1. Server is online
             # 2. User is set
@@ -523,6 +531,7 @@ class Service(object):
                     continue
             elif not self.startup_completed:
                 self.startup_completed = True
+                self.webservice.start()
                 self.ws.start()
                 self.sync.start()
                 self.plexcompanion.start()

resources/lib/variables.py

@@ -92,6 +92,9 @@ DEVICENAME = DEVICENAME.replace(' ', "")
 
 COMPANION_PORT = int(_ADDON.getSetting('companionPort'))
 
+# Port for the PKC webservice
+WEBSERVICE_PORT = 57578
+
 # Unique ID for this Plex client; also see clientinfo.py
 PKC_MACHINE_IDENTIFIER = None
 

resources/lib/webservice.py

@@ -0,0 +1,319 @@
+# -*- coding: utf-8 -*-
+'''
+PKC-dedicated webserver. Listens to Kodi starting playback; will then hand-over
+playback to plugin://video.plexkodiconnect
+'''
+from __future__ import absolute_import, division, unicode_literals
+from logging import getLogger
+import BaseHTTPServer
+import httplib
+import urlparse
+import socket
+import Queue
+
+import xbmc
+import xbmcvfs
+
+from . import backgroundthread, utils, variables as v, app
+from .playstrm import PlayStrm
+
+
+LOG = getLogger('PLEX.webservice')
+
+
+class WebService(backgroundthread.KillableThread):
+
+    ''' Run a webservice to trigger playback.
+    '''
+    def is_alive(self):
+        ''' Called to see if the webservice is still responding.
+        '''
+        alive = True
+        try:
+            s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            s.connect(('127.0.0.1', v.WEBSERVICE_PORT))
+            s.sendall('')
+        except Exception as error:
+            LOG.error(error)
+            if 'Errno 61' in str(error):
+                alive = False
+        s.close()
+        return alive
+
+    def abort(self):
+        ''' Called when the thread needs to stop
+        '''
+        try:
+            conn = httplib.HTTPConnection('127.0.0.1:%d' % v.WEBSERVICE_PORT)
+            conn.request('QUIT', '/')
+            conn.getresponse()
+        except Exception:
+            pass
+
+    def run(self):
+        ''' Called to start the webservice.
+        '''
+        LOG.info('----===## Starting Webserver on port %s ##===----',
+                 v.WEBSERVICE_PORT)
+        app.APP.register_thread(self)
+        try:
+            server = HttpServer(('127.0.0.1', v.WEBSERVICE_PORT),
+                                RequestHandler)
+            server.serve_forever()
+        except Exception as error:
+            if '10053' not in error:  # ignore host diconnected errors
+                utils.ERROR()
+        finally:
+            app.APP.deregister_thread(self)
+            LOG.info('##===---- Webserver stopped ----===##')
+
+
+class HttpServer(BaseHTTPServer.HTTPServer):
+    ''' Http server that reacts to self.stop flag.
+    '''
+    def __init__(self, *args, **kwargs):
+        self.stop = False
+        self.pending = []
+        self.threads = []
+        self.queue = Queue.Queue()
+        super(HttpServer, self).__init__(*args, **kwargs)
+
+    def serve_forever(self):
+
+        ''' Handle one request at a time until stopped.
+        '''
+        while not self.stop:
+            self.handle_request()
+
+
+class RequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
+    ''' Http request handler. Do not use LOG here,
+        it will hang requests in Kodi > show information dialog.
+    '''
+    timeout = 0.5
+
+    def log_message(self, format, *args):
+        ''' Mute the webservice requests.
+        '''
+        pass
+
+    def handle(self):
+        ''' To quiet socket errors with 404.
+        '''
+        try:
+            BaseHTTPServer.BaseHTTPRequestHandler.handle(self)
+        except Exception:
+            pass
+
+    def do_QUIT(self):
+        ''' send 200 OK response, and set server.stop to True
+        '''
+        self.send_response(200)
+        self.end_headers()
+        self.server.stop = True
+
+    def get_params(self):
+        ''' Get the params as a dict
+        '''
+        try:
+            path = self.path[1:].decode('utf-8')
+        except IndexError:
+            params = {}
+        if '?' in path:
+            path = path.split('?', 1)[1]
+        params = dict(urlparse.parse_qsl(path))
+
+        if params.get('transcode'):
+            params['transcode'] = params['transcode'].lower() == 'true'
+        if params.get('server') and params['server'].lower() == 'none':
+            params['server'] = None
+
+        return params
+
+    def do_HEAD(self):
+        ''' Called on HEAD requests
+        '''
+        self.handle_request(True)
+
+    def do_GET(self):
+        ''' Called on GET requests
+        '''
+        self.handle_request()
+
+    def handle_request(self, headers_only=False):
+        '''Send headers and reponse
+        '''
+        try:
+            if b'extrafanart' in self.path or b'extrathumbs' in self.path:
+                raise Exception('unsupported artwork request')
+
+            if headers_only:
+                self.send_response(200)
+                self.send_header(b'Content-type', b'text/html')
+                self.end_headers()
+
+            elif b'file.strm' not in self.path:
+                self.images()
+            elif b'file.strm' in self.path:
+                self.strm()
+            else:
+                xbmc.log(str(self.path), xbmc.LOGWARNING)
+
+        except Exception as error:
+            self.send_error(500,
+                            b'PLEX.webservice: Exception occurred: %s' % error)
+        xbmc.log('<[ webservice/%s/%s ]' % (str(id(self)), int(not headers_only)), xbmc.LOGWARNING)
+
+    def strm(self):
+        ''' Return a dummy video and and queue real items.
+        '''
+        self.send_response(200)
+        self.send_header(b'Content-type', b'text/html')
+        self.end_headers()
+
+        params = self.get_params()
+
+        if b'kodi/movies' in self.path:
+            params['kodi_type'] = v.KODI_TYPE_MOVIE
+        elif b'kodi/tvshows' in self.path:
+            params['kodi_type'] = v.KODI_TYPE_EPISODE
+        # elif 'kodi/musicvideos' in self.path:
+        #     params['MediaType'] = 'musicvideo'
+
+        if utils.settings('pluginSingle.bool'):
+            path = 'plugin://plugin.video.plexkodiconnect?mode=playsingle&plex_id=%s' % params['plex_id']
+            if params.get('server'):
+                path += '&server=%s' % params['server']
+            if params.get('transcode'):
+                path += '&transcode=true'
+            if params.get('kodi_id'):
+                path += '&kodi_id=%s' % params['kodi_id']
+            if params.get('Name'):
+                path += '&filename=%s' % params['Name']
+            self.wfile.write(bytes(path))
+            return
+
+        path = 'plugin://plugin.video.plexkodiconnect?mode=playstrm&plex_id=%s' % params['plex_id']
+        self.wfile.write(bytes(path))
+        if params['plex_id'] not in self.server.pending:
+            xbmc.log('PLEX.webserver: %s: path: %s params: %s'
+                     % (str(id(self)), str(self.path), str(params)),
+                     xbmc.LOGWARNING)
+
+            self.server.pending.append(params['plex_id'])
+            self.server.queue.put(params)
+            if not len(self.server.threads):
+                queue = QueuePlay(self.server)
+                queue.start()
+                self.server.threads.append(queue)
+
+    def images(self):
+        ''' Return a dummy image for unwanted images requests over the webservice.
+            Required to prevent freezing of widget playback if the file url has no
+            local textures cached yet.
+        '''
+        image = xbmc.translatePath(
+            'special://home/addons/plugin.video.plexkodiconnect/icon.png').decode('utf-8')
+        self.send_response(200)
+        self.send_header(b'Content-type', b'image/png')
+        modified = xbmcvfs.Stat(image).st_mtime()
+        self.send_header(b'Last-Modified', b'%s' % modified)
+        image = xbmcvfs.File(image)
+        size = image.size()
+        self.send_header(b'Content-Length', str(size))
+        self.end_headers()
+        self.wfile.write(image.readBytes())
+        image.close()
+
+
+class QueuePlay(backgroundthread.KillableThread):
+    ''' Workflow for new playback:
+
+        Queue up strm playback that was called in the webservice. Called
+        playstrm in default.py which will wait for our signal here. Downloads
+        plex information. Add content to the playlist after the strm file that
+        initiated playback from db. Start playback by telling playstrm waiting.
+        It will fail playback of the current strm and move to the next entry for
+        us. If play folder, playback starts here.
+
+        Required delay for widgets, custom skin containers and non library
+        windows. Otherwise Kodi will freeze if no artwork textures are cached
+        yet in Textures13.db Will be skipped if the player already has media and
+        is playing.
+
+        Why do all this instead of using plugin? Strms behaves better than
+        plugin in database. Allows to load chapter images with direct play.
+        Allows to have proper artwork for intros. Faster than resolving using
+        plugin, especially on low powered devices. Cons: Can't use external
+        players with this method.
+    '''
+
+    def __init__(self, server):
+        self.server = server
+        super(QueuePlay, self).__init__()
+
+    def run(self):
+        LOG.info('##===---- Starting QueuePlay ----===##')
+        play_folder = False
+        play = None
+        start_position = None
+        position = None
+
+        # Let Kodi catch up
+        xbmc.sleep(200)
+
+        while True:
+
+            try:
+                try:
+                    params = self.server.queue.get(timeout=0.01)
+                except Queue.Empty:
+                    count = 20
+                    while not utils.window('plex.playlist.ready.bool'):
+                        xbmc.sleep(50)
+                        if not count:
+                            LOG.info('Playback aborted')
+                            raise Exception('PlaybackAborted')
+                        count -= 1
+                    LOG.info('Starting playback at position: %s', start_position)
+                    if play_folder:
+                        LOG.info('Start playing folder')
+                        xbmc.executebuiltin('Dialog.Close(busydialognocancel)')
+                        play.start_playback()
+                    else:
+                        utils.window('plex.playlist.play.bool', True)
+                        xbmc.sleep(1000)
+                        play.remove_from_playlist(start_position)
+                    break
+                play = PlayStrm(params, params.get('ServerId'))
+
+                if start_position is None:
+                    start_position = max(play.info['KodiPlaylist'].getposition(), 0)
+                    position = start_position + 1
+                if play_folder:
+                    position = play.play_folder(position)
+                else:
+                    if self.server.pending.count(params['plex_id']) != len(self.server.pending):
+                        play_folder = True
+                    utils.window('plex.playlist.start', str(start_position))
+                    position = play.play(position)
+                    if play_folder:
+                        xbmc.executebuiltin('Activateutils.window(busydialognocancel)')
+            except Exception:
+                utils.ERROR()
+                play.info['KodiPlaylist'].clear()
+                xbmc.Player().stop()
+                self.server.queue.queue.clear()
+                if play_folder:
+                    xbmc.executebuiltin('Dialog.Close(busydialognocancel)')
+                else:
+                    utils.window('plex.playlist.aborted.bool', True)
+                break
+            self.server.queue.task_done()
+
+        utils.window('plex.playlist.ready', clear=True)
+        utils.window('plex.playlist.start', clear=True)
+        utils.window('plex.playlist.audio', clear=True)
+        self.server.threads.remove(self)
+        self.server.pending = []
+        LOG.info('##===---- QueuePlay Stopped ----===##')

resources/lib/widgets.py

@@ -29,11 +29,19 @@ PLEX_TYPE = None
 SECTION_ID = None
 APPEND_SHOW_TITLE = None
 APPEND_SXXEXX = None
-SYNCHED = True
 # Need to chain the PMS keys
 KEY = None
 
 
+def get_listitem(xml_element):
+    """
+    Returns a valid xbmcgui.ListItem() for xml_element
+    """
+    item = generate_item(xml_element)
+    prepare_listitem(item)
+    return create_listitem(item)
+
+
 def process_method_on_list(method_to_run, items):
     """
     helper method that processes a method on each listitem with pooling if the
@@ -246,8 +254,6 @@ def attach_kodi_ids(xml):
     """
     Attaches the kodi db_item to the xml's children, attribute 'pkc_db_item'
     """
-    if not SYNCHED:
-        return
     with PlexDB(lock=False) as plexdb:
         for child in xml:
             api = API(child)