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a b/rdpl2stream/RamPlaylistDecoder.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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import logging
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class RamPlaylistDecoder:
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    def __init__(self):
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        self.log = logging.getLogger('radiotray')
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        self.log.debug('RAM playlist decoder')
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    def isStreamValid(self, contentType, firstBytes):
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        if('audio/x-pn-realaudio' in contentType or 'audio/vnd.rn-realaudio' in contentType):
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            self.log.info('Stream is readable by RAM 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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        lines = str.splitlines()
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        playlist = []
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        for line in lines:
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            if line.startswith("#") == False and len(line) > 0:
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                tmp = line.strip()
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                if(len(tmp) > 0):
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                    playlist.append(line.strip())
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        return playlist