133 lines
4.8 KiB
Python
133 lines
4.8 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright(C) 2010 Christophe Benz, Romain Bignon, John Obbele
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#
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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 General Public License as published by
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# the Free Software Foundation, version 3 of the License.
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#
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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 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 this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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import os
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from subprocess import Popen, PIPE
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from weboob.tools.log import getLogger
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__all__ = ['InvalidMediaPlayer', 'MediaPlayer', 'MediaPlayerNotFound']
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PLAYERS = (
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('parole', 'fd://0'),
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('totem', 'fd://0'),
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('mplayer', '-really-quiet -'),
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('vlc', '-'),
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('xine', 'stdin:/'),
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)
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class MediaPlayerNotFound(Exception):
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def __init__(self):
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Exception.__init__(self, u'No media player found on this system. Please install one of them: %s.' % \
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', '.join(player[0] for player in PLAYERS))
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class InvalidMediaPlayer(Exception):
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def __init__(self, player_name):
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Exception.__init__(self, u'Invalid media player: %s. Valid media players: %s.' % (
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player_name, ', '.join(player[0] for player in PLAYERS)))
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class MediaPlayer(object):
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"""
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Black magic invoking a media player to this world.
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Presently, due to strong disturbances in the holidays of the ether
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world, the media player used is chosen from a static list of
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programs. See PLAYERS for more information.
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"""
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def __init__(self, logger=None):
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self.logger = getLogger('mediaplayer', logger)
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def guess_player_name(self):
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for player_name in [player[0] for player in PLAYERS]:
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if self._find_in_path(os.environ['PATH'], player_name):
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return player_name
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return None
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def play(self, media, player_name=None):
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"""
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Play a media object, using programs from the PLAYERS list.
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This function dispatch calls to either _play_default or
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_play_rtmp for special rtmp streams using SWF verification.
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"""
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player_names = [player[0] for player in PLAYERS]
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if player_name:
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if player_name not in player_names:
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raise InvalidMediaPlayer(player_name)
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else:
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self.logger.debug(u'No media player given. Using the first available from: %s.' % \
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', '.join(player_names))
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player_name = self.guess_player_name()
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if player_name is None:
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raise MediaPlayerNotFound()
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if media.url.find('rtmp') == 0:
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self._play_rtmp(media, player_name)
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else:
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self._play_default(media, player_name)
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def _play_default(self, media, player_name):
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"""
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Play media.url with the media player.
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"""
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print 'Invoking "%s %s".' % (player_name, media.url)
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os.spawnlp(os.P_NOWAIT, player_name, player_name, media.url)
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def _play_rtmp(self, media, player_name):
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"""
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Download data with rtmpdump and pipe them to a media player.
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You need a working version of rtmpdump installed and the SWF
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object url in order to comply with SWF verification requests
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from the server. The last one is retrieved from the non-standard
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non-API compliant 'swf_player' attribute of the 'media' object.
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"""
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if not self._find_in_path(os.environ['PATH'], 'rtmpdump'):
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self.logger.warning('"rtmpdump" binary not found')
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return self._play_default(media, player_name)
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media_url = media.url
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try:
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player_url = media.swf_player
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rtmp = 'rtmpdump -r %s --swfVfy %s' % (media_url, player_url)
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except AttributeError:
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self.logger.warning('Your media object does not have a "swf_player" attribute. SWF verification will be '
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'disabled and may prevent correct media playback.')
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return self._play_default(media, player_name)
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rtmp += ' --quiet'
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args = None
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for (binary, stdin_args) in PLAYERS:
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if binary == player_name:
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args = stdin_args
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assert args is not None
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print ':: Streaming from %s' % media_url
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print ':: to %s %s' % (player_name, args)
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p1 = Popen(rtmp.split(), stdout=PIPE)
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Popen([player_name, args], stdin=p1.stdout, stderr=PIPE)
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def _find_in_path(self,path, filename):
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for i in path.split(':'):
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if os.path.exists('/'.join([i, filename])):
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return True
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return False
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