pymeds/pymeds.py

#!/usr/bin/env python

# Licensed under the MIT license
# http://opensource.org/licenses/mit-license.php
# Copyright 2005, Tim Potter <tpot@samba.org>
# Copyright 2006 John-Mark Gurney <jmg@funkthat.com>

__version__ = '$Change$'
# $Id$

# make sure debugging is initalized first, other modules can be pulled in
# before the "real" debug stuff is setup.  (hmm I could make this a two
# stage, where we simulate a namespace to either be thrown away when the
# time comes, or merge into the correct one)
import debug		# my debugging module
debug.doDebugging(True)	# open up debugging port

# Modules to import, maybe config file or something?
def tryloadmodule(mod):
	try:
		return __import__(mod)
	except ImportError:
		#import traceback
		#traceback.print_exc()
		pass

# ZipStorage w/ tar support should be last as it will gobble up empty files.
# These should be sorted by how much work they do, the least work the earlier.
# mpegtsmod can be really expensive.
modules = [
	'shoutcast',
	'pyvr',
	'dvd',
	'ZipStorage',
	'mpegtsmod',
	]
modmap = {}
for i in modules:
	modmap[i] = tryloadmodule(i)

for i in modules:
	debug.insertnamespace(i, modmap[i])

from FSStorage import FSDirectory
import os
import os.path
import random
import socket
import string
import urlparse
from twisted.application import internet, service
from twisted.python import usage

def generateuuid():
	return ''.join([ 'uuid:'] + map(lambda x: random.choice(string.letters), xrange(20)))

class Options(usage.Options):
	checkpath = True
	optParameters = [
		[ 'title', 't', 'My Media Server', 'Title of the server.', ],
		[ 'path', 'p', 'media', 'Root path of the media to be served.', ],
	    ]

	def postOptions(self):
		p = self['path']
		if self.checkpath and not os.path.isdir(p):
			raise usage.UsageError, 'path %s does not exist' % `p`

	def parseArgs(self, *args):
		# XXX - twisted doesn't let you provide a message on what
		# arguments are required, so we will do our own work in here.

		if len(args) not in (1, 2):
			raise usage.UsageError, 'Arguments: addr [ port ]'

		self['addr'] = args[0]
		if len(args) == 1:
			port = random.randint(10000, 65000)
		else:
			port = int(args[1])
			if port < 1024 or port > 65535:
				raise ValueError(
				    'port must be between 1024 and 65535')
		self['port'] = port

def fixupmimetypes():
	# Purely to ensure some sane mime-types.  On MacOSX I need these.
	# XXX - There isn't any easier way to get to the mime-type dict
	# that I know of.
	from twisted.web import static
	medianode = static.File('pymediaserv')
	medianode.contentTypes.update( {
		# From: http://support.microsoft.com/kb/288102
		'.asf':	'video/x-ms-asf',
		'.asx':	'video/x-ms-asf',
		'.wma':	'audio/x-ms-wma',
		'.wax':	'audio/x-ms-wax',
		'.wmv':	'video/x-ms-wmv',
		'.wvx':	'video/x-ms-wvx',
		'.wm':	'video/x-ms-wm',
		'.wmx':	'video/x-ms-wmx',

		# From: http://www.matroska.org/technical/specs/notes.html
		'.mkv':	'video/x-matroska',
		'.mka':	'audio/x-matroska',

		#'.ts':	'video/mp2t',
		'.ts':	'video/mpeg',	# we may want this instead of mp2t
		'.m2t':	'video/mpeg',
		'.m2ts':	'video/mpeg',
		'.mp4':	'video/mp4',
		#'.mp4':	'video/mpeg',
		'.dat':	'video/mpeg',	# VCD tracks
		'.ogm':	'application/ogg',
		'.vob':	'video/mpeg',
		#'.m4a': 'audio/mp4',   # D-Link can't seem to play AAC files.
	})

def makeService(config):
	listenAddr = config['addr']
	listenPort = config['port']

	uuid = config.get('uuid', None)
	if uuid is None:
		uuid = generateuuid()

	urlbase = 'http://%s:%d/' % (listenAddr, listenPort)

	# Create SOAP server and content server
	from twisted.web import server, resource, static
	from ContentDirectory import ContentDirectoryServer
	from ConnectionManager import ConnectionManagerServer

	class WebServer(resource.Resource):
		def __init__(self):
			resource.Resource.__init__(self)

	class RootDevice(static.Data):
		def __init__(self):
			r = {
				'hostname': socket.gethostname(),
				'uuid': uuid,
				'urlbase': urlbase,
			}
			d = file('root-device.xml').read() % r
			static.Data.__init__(self, d, 'text/xml')

	root = WebServer()
	debug.insertnamespace('root', root)
	content = resource.Resource()
	# This sets up the root to be the media dir so we don't have to
	# enumerate the directory.
	cds = ContentDirectoryServer(config['title'], klass=FSDirectory,
	    path=config['path'], urlbase=urlparse.urljoin(urlbase, 'content/'),
	    webbase=content)
	debug.insertnamespace('cds', cds)
	root.putChild('ContentDirectory', cds)
	cds = cds.control
	root.putChild('ConnectionManager', ConnectionManagerServer())
	root.putChild('root-device.xml', RootDevice())
	root.putChild('content', content)

	fixupmimetypes()

	site = server.Site(root)

	# Create SSDP server
	from SSDP import SSDPServer, SSDP_PORT

	s = SSDPServer()
	debug.insertnamespace('s', s)

	class PyMedS(service.MultiService):
		def startService(self):
			service.MultiService.startService(self)

			rdxml = urlparse.urljoin(urlbase, 'root-device.xml')
			s.register('%s::upnp:rootdevice' % uuid,
			    'upnp:rootdevice', rdxml)

			s.register(uuid,
			    uuid,
			    rdxml)

			s.register('%s::urn:schemas-upnp-org:device:MediaServer:1' % uuid,
			    'urn:schemas-upnp-org:device:MediaServer:1', rdxml)

			s.register('%s::urn:schemas-upnp-org:service:ConnectionManager:1' % uuid,
			    'urn:schemas-upnp-org:device:ConnectionManager:1', rdxml)

			s.register('%s::urn:schemas-upnp-org:service:ContentDirectory:1' % uuid,
			    'urn:schemas-upnp-org:device:ContentDirectory:1', rdxml)

		def stopService(self):
			# Some reason stopProtocol isn't called
			s.doStop()
			service.MultiService.stopService(self)

	serv = PyMedS()

	internet.TCPServer(listenPort, site).setServiceParent(serv)
	internet.MulticastServer(SSDP_PORT, s,
	    listenMultiple=True).setServiceParent(serv)

	return serv