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b/rdpl2stream/AsfPlaylistDecoder.py |
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##########################################################################
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# Copyright 2009 Carlos Ribeiro
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#
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# This file is part of Radio Tray
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#
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# Radio Tray is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 1 of the License, or
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# (at your option) any later version.
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#
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# Radio Tray 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 General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Radio Tray. If not, see <http://www.gnu.org/licenses/>.
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#
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##########################################################################
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import urllib2
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from lib.common import USER_AGENT
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from lxml import etree
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from lxml import objectify
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from StringIO import StringIO
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import logging
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class AsfPlaylistDecoder:
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def __init__(self):
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self.log = logging.getLogger('radiotray')
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self.log.debug('Initializing ASF playlist decoder')
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def isStreamValid(self, contentType, firstBytes):
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if('video/x-ms-asf' in contentType and firstBytes.strip().lower().startswith('[reference]')):
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self.log.info('Stream is readable by ASF Playlist Decoder')
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return True
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else:
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return False
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def extractPlaylist(self, url):
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self.log.info('Downloading playlist..')
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req = urllib2.Request(url)
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req.add_header('User-Agent', USER_AGENT)
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f = urllib2.urlopen(req)
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str = f.read()
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f.close()
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self.log.info('Playlist downloaded')
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self.log.info('Decoding playlist...')
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playlist = []
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lines = str.split("\n")
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for line in lines:
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if (line.startswith("Ref") == True):
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list = line.split("=", 1)
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tmp = list[1].strip()
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if (tmp.endswith("?MSWMExt=.asf")):
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playlist.append(tmp.replace("http", "mms"))
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else:
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playlist.append(tmp)
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return playlist
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