Source Code for Module flumotion.component.producers.icecast.icecast

 1  # -*- Mode: Python -*- 
 2  # vi:si:et:sw=4:sts=4:ts=4 
 3  # 
 4  # Flumotion - a streaming media server 
 5  # Copyright (C) 2004,2005,2006,2007 Fluendo, S.L. (www.fluendo.com). 
 6  # All rights reserved. 
 7   
 8  # This file may be distributed and/or modified under the terms of 
 9  # the GNU General Public License version 2 as published by 
10  # the Free Software Foundation. 
11  # This file is distributed without any warranty; without even the implied 
12  # warranty of merchantability or fitness for a particular purpose. 
13  # See "LICENSE.GPL" in the source distribution for more information. 
14   
15  # Licensees having purchased or holding a valid Flumotion Advanced 
16  # Streaming Server license may use this file in accordance with the 
17  # Flumotion Advanced Streaming Server Commercial License Agreement. 
18  # See "LICENSE.Flumotion" in the source distribution for more information. 
19   
20  # Headers in this file shall remain intact. 
21   
22  import gst 
23   
24  from flumotion.component import feedcomponent 
25   
26  __version__ = "$Rev: 6125 $" 
27   
28   
29 -class Icecast(feedcomponent.ParseLaunchComponent): 
30   
31 -    def get_pipeline_string(self, properties): 
32          return "gnomevfssrc name=src ! typefind name=tf" 
33   
34 -    def configure_pipeline(self, pipeline, properties): 
35          # Later, when the typefind element has successfully found the type 
36          # of the data, we'll rebuild the pipeline. 
37          def have_caps(tf, prob, caps): 
38              capsname = caps[0].get_name() 
39              # We should add appropriate parsers for any given format here. For 
40              # some it's critical for this to work at all, for others it's needed 
41              # for timestamps (thus for things like time-based burst-on-connect) 
42              # Currently, we only handle ogg. 
43              parser = None 
44              if capsname == 'application/ogg': 
45                  parser = gst.element_factory_make('oggparse') 
46              elif capsname == 'audio/mpeg': 
47                  parser = gst.element_factory_make('mp3parse') 
48   
49              if parser: 
50                  parser.set_state(gst.STATE_PLAYING) 
51                  pipeline.add(parser) 
52                  # Relink - unlink typefind from the bits that follow it (the 
53                  # gdp payloader), link in the parser, relink to the payloader. 
54                  pad = tf.get_pad('src') 
55                  peer = pad.get_peer() 
56                  pad.unlink(peer) 
57                  tf.link(parser) 
58                  parser.link(peer.get_parent()) 
59   
60          src = pipeline.get_by_name('src') 
61          src.set_property('location',  properties['url']) 
62   
63          typefind = pipeline.get_by_name('tf') 
64          typefind.connect('have-type', have_caps) 
65