230 lines
12 KiB
Python
Executable file
230 lines
12 KiB
Python
Executable file
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# SAT plugin for managing Radiocol
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# Copyright (C) 2009, 2010, 2011, 2012, 2013 Jérôme Poisson (goffi@goffi.org)
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from logging import debug, info, warning, error
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from twisted.words.xish import domish
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from twisted.internet import reactor
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from twisted.words.protocols.jabber import jid
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import os.path
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import copy
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import time
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from os import unlink
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from mutagen.oggvorbis import OggVorbis, OggVorbisHeaderError
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NC_RADIOCOL = 'http://www.goffi.org/protocol/radiocol'
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RADIOC_TAG = 'radiocol'
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PLUGIN_INFO = {
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"name": "Radio collective plugin",
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"import_name": "Radiocol",
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"type": "Exp",
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"protocols": [],
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"dependencies": ["XEP-0045", "XEP-0249", "ROOM-GAME"],
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"main": "Radiocol",
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"handler": "yes",
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"description": _("""Implementation of radio collective""")
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}
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# Number of songs needed in the queue before we start playing
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QUEUE_TO_START = 2
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# Maximum number of songs in the queue (the song being currently played doesn't count)
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QUEUE_LIMIT = 2
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class Radiocol(object):
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def inheritFromRoomGame(self, host):
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global RoomGame
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RoomGame = host.plugins["ROOM-GAME"].__class__
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self.__class__ = type(self.__class__.__name__, (self.__class__, RoomGame, object), {})
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def __init__(self, host):
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info(_("Radio collective initialization"))
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self.inheritFromRoomGame(host)
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RoomGame._init_(self, host, PLUGIN_INFO, (NC_RADIOCOL, RADIOC_TAG),
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game_init={'queue': [], 'upload': True, 'playing': False, 'to_delete': {}})
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self.host = host
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host.bridge.addMethod("radiocolLaunch", ".plugin", in_sign='asss', out_sign='', method=self.prepareRoom)
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host.bridge.addMethod("radiocolCreate", ".plugin", in_sign='sass', out_sign='', method=self.createGame)
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host.bridge.addMethod("radiocolSongAdded", ".plugin", in_sign='sss', out_sign='', method=self.radiocolSongAdded)
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host.bridge.addSignal("radiocolPlayers", ".plugin", signature='ssass') # room_jid, referee, players, profile
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host.bridge.addSignal("radiocolStarted", ".plugin", signature='ssasais') # room_jid, referee, players, [QUEUE_TO_START, QUEUE_LIMIT], profile
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host.bridge.addSignal("radiocolSongRejected", ".plugin", signature='sss') # room_jid, reason, profile
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host.bridge.addSignal("radiocolPreload", ".plugin", signature='sssssss') # room_jid, timestamp, filename, title, artist, album, profile
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host.bridge.addSignal("radiocolPlay", ".plugin", signature='sss') # room_jid, filename, profile
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host.bridge.addSignal("radiocolNoUpload", ".plugin", signature='ss') # room_jid, profile
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host.bridge.addSignal("radiocolUploadOk", ".plugin", signature='ss') # room_jid, profile
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def __create_preload_elt(self, sender, song_added_elt):
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preload_elt = copy.deepcopy(song_added_elt)
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preload_elt.name = 'preload'
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preload_elt['sender'] = sender
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preload_elt['timestamp'] = str(time.time())
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# attributes filename, title, artist, album, length have been copied
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# XXX: the frontend should know the temporary directory where file is put
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return preload_elt
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def radiocolSongAdded(self, referee, song_path, profile):
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"""This method is called by libervia when a song has been uploaded
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@param room_jid_param: jid of the room
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@song_path: absolute path of the song added
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@param profile_key: %(doc_profile_key)s"""
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#XXX: this is a Q&D way for the proof of concept. In the future, the song should
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# be streamed to the backend using XMPP file copy
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# Here we cheat because we know we are on the same host, and we don't
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# check data. Referee will have to parse the song himself to check it
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client = self.host.getClient(profile)
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if not client:
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error(_("Can't access profile's data"))
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return
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try:
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song = OggVorbis(song_path)
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except OggVorbisHeaderError:
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#this file is not ogg vorbis, we reject it
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self.deleteFile(song_path) # FIXME: same host trick (see note above)
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self.host.bridge.radiocolSongRejected(jid.JID(referee).userhost(),
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"Uploaded file is not Ogg Vorbis song, only Ogg Vorbis songs are acceptable", profile)
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"""mess = self.createGameElt(jid.JID(referee))
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reject_elt = mess.firstChildElement().addElement(('','song_rejected'))
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reject_elt['sender'] = client.jid
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reject_elt['reason'] = "Uploaded file is not Ogg Vorbis song, only Ogg Vorbis songs are acceptable"
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#FIXME: add an error code
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self.host.profiles[profile].xmlstream.send(mess)"""
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return
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attrs = {'filename': os.path.basename(song_path),
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'title': song.get("title", ["Unknown"])[0],
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'artist': song.get("artist", ["Unknown"])[0],
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'album': song.get("album", ["Unknown"])[0],
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'length': str(song.info.length)
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}
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self.send(jid.JID(referee), ('', 'song_added'), attrs, profile=profile)
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radio_data = self.games[jid.JID(referee).userhost()] # FIXME: referee comes from Libervia's client side, it's unsecure
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radio_data['to_delete'][attrs['filename']] = song_path # FIXME: works only because of the same host trick, see the note under the docstring
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def playNext(self, room_jid, profile):
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""""Play next song in queue if exists, and put a timer
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which trigger after the song has been played to play next one"""
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#TODO: songs need to be erased once played or found invalids
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# ==> unlink done the Q&D way with the same host trick (see above)
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radio_data = self.games[room_jid.userhost()]
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if len(radio_data['players']) == 0:
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debug(_('No more participants in the radiocol: cleaning data'))
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radio_data['queue'] = []
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for filename in radio_data['to_delete']:
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self.deleteFile(radio_data, filename)
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radio_data['to_delete'] = {}
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queue = radio_data['queue']
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if not queue:
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#nothing left to play, we need to wait for uploads
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radio_data['playing'] = False
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return
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song = queue.pop(0)
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filename, length = song['filename'], float(song['length'])
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self.send(room_jid, ('', 'play'), {'filename': filename}, profile=profile)
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if not radio_data['upload'] and len(queue) < QUEUE_LIMIT:
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#upload is blocked and we now have resources to get more, we reactivate it
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self.send(room_jid, ('', 'upload_ok'), profile=profile)
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radio_data['upload'] = True
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reactor.callLater(length, self.playNext, room_jid, profile)
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#we wait more than the song length to delete the file, to manage poorly reactive networks/clients
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reactor.callLater(length + 90, self.deleteFile, radio_data, filename) # FIXME: same host trick (see above)
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def deleteFile(self, radio_data, filename):
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try:
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file_to_delete = radio_data['to_delete'][filename]
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except KeyError:
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error(_("INTERNAL ERROR: can't find full path of the song to delete"))
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return False
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try:
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unlink(file_to_delete)
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except OSError:
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error(_("INTERNAL ERROR: can't find %s on the file system" % file_to_delete))
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return False
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return True
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def room_game_cmd(self, mess_elt, profile):
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from_jid = jid.JID(mess_elt['from'])
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room_jid = jid.JID(from_jid.userhost())
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radio_elt = mess_elt.firstChildElement()
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radio_data = self.games[room_jid.userhost()]
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if 'queue' in radio_data:
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queue = radio_data['queue']
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from_referee = self.isReferee(room_jid.userhost(), from_jid.resource)
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to_referee = self.isReferee(room_jid.userhost(), jid.JID(mess_elt['to']).user)
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for elt in radio_elt.elements():
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if not from_referee and not (to_referee and elt.name == 'song_added'):
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continue # sender must be referee, expect when a song is submitted
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if elt.name == 'started' or elt.name == 'players': # new game created
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players = []
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for player in elt.elements():
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players.append(unicode(player))
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signal = self.host.bridge.radiocolStarted if elt.name == 'started' else self.host.bridge.radiocolPlayers
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signal(room_jid.userhost(), from_jid.full(), players, [QUEUE_TO_START, QUEUE_LIMIT], profile)
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elif elt.name == 'preload': # a song is in queue and must be preloaded
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self.host.bridge.radiocolPreload(room_jid.userhost(), elt['timestamp'], elt['filename'], elt['title'], elt['artist'], elt['album'], profile)
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elif elt.name == 'play':
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self.host.bridge.radiocolPlay(room_jid.userhost(), elt['filename'], profile)
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elif elt.name == 'song_rejected': # a song has been refused
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self.host.bridge.radiocolSongRejected(room_jid.userhost(), elt['reason'], profile)
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elif elt.name == 'no_upload':
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self.host.bridge.radiocolNoUpload(room_jid.userhost(), profile)
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elif elt.name == 'upload_ok':
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self.host.bridge.radiocolUploadOk(room_jid.userhost(), profile)
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elif elt.name == 'song_added': # a song has been added
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#FIXME: we are KISS for the proof of concept: every song is added, to a limit of 3 in queue.
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# Need to manage some sort of rules to allow peoples to send songs
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if len(queue) >= QUEUE_LIMIT:
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#there are already too many songs in queue, we reject this one
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#FIXME: add an error code
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self.send(from_jid, ('', 'song_rejected'), {'reason': "Too many songs in queue"}, profile=profile)
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return
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#The song is accepted and added in queue
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preload_elt = self.__create_preload_elt(from_jid.resource, elt)
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queue.append(preload_elt)
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if len(queue) >= QUEUE_LIMIT:
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#We are at the limit, we refuse new upload until next play
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self.send(room_jid, ('', 'no_upload'), profile=profile)
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radio_data['upload'] = False
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self.send(room_jid, preload_elt, profile=profile)
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if not radio_data['playing'] and len(queue) == QUEUE_TO_START:
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# We have not started playing yet, and we have QUEUE_TO_START
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# songs in queue. We can now start the party :)
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radio_data['playing'] = True
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self.playNext(room_jid, profile)
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else:
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error(_('Unmanaged game element: %s') % elt.name)
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def getSyncData(self, room_jid_s):
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data = self.games[room_jid_s]['queue']
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if len(data) == QUEUE_LIMIT:
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data.append(domish.Element((None, 'no_upload')))
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return data
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