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) 2004,2005,2006,2007,2008,2009 Fluendo, S.L. 
 6  # Copyright (C) 2010,2011 Flumotion Services, S.A. 
 7  # All rights reserved. 
 8  # 
 9  # This file may be distributed and/or modified under the terms of 
10  # the GNU Lesser General Public License version 2.1 as published by 
11  # the Free Software Foundation. 
12  # This file is distributed without any warranty; without even the implied 
13  # warranty of merchantability or fitness for a particular purpose. 
14  # See "LICENSE.LGPL" in the source distribution for more information. 
15  # 
16  # Headers in this file shall remain intact. 
17   
18  from flumotion.common import gstreamer 
19  from flumotion.component import feedcomponent 
20   
21  __version__ = "$Rev$" 
22   
23   
24 -class Mulaw(feedcomponent.EncoderComponent):
25
26 - def get_pipeline_string(self, properties):
27 resampler = 'audioresample' 28 if gstreamer.element_factory_exists('legacyresample'): 29 resampler = 'legacyresample' 30 # we only support mulaw in multipart, and multipart mandates 31 # the audio/basic content-type to be 8000 Hz mono, c.f. RFC2046 32 return ('%s ! audioconvert ! audio/x-raw-int,rate=8000,channels=1 ' 33 '! mulawenc name=encoder' % resampler)
34