Package flumotion :: Package component :: Package encoders :: Package mulaw :: Module mulaw
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Source Code for Module flumotion.component.encoders.mulaw.mulaw

 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  from flumotion.common import gstreamer 
23  from flumotion.component import feedcomponent 
24   
25  __version__ = "$Rev$" 
26   
27   
28 -class Mulaw(feedcomponent.EncoderComponent):
29
30 - def get_pipeline_string(self, properties):
31 resampler = 'audioresample' 32 if gstreamer.element_factory_exists('legacyresample'): 33 resampler = 'legacyresample' 34 # we only support mulaw in multipart, and multipart mandates 35 # the audio/basic content-type to be 8000 Hz mono, c.f. RFC2046 36 return ('%s ! audioconvert ! audio/x-raw-int,rate=8000,channels=1 ' 37 '! mulawenc name=encoder' % resampler)
38