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

 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.component import feedcomponent 
23  from flumotion.common import errors, gstreamer, messages 
24  from flumotion.component.effects.volume import volume 
25   
26  from flumotion.common.messages import N_ 
27  T_ = messages.gettexter('flumotion') 
28   
29 -class Screencast(feedcomponent.ParseLaunchComponent): 
30 -    def get_pipeline_string(self, properties): 
31          def getProps(): 
32              ret = [] 
33              for k, default in (('width', 320), 
34                                 ('height', 240), 
35                                 ('x-offset', 0), 
36                                 ('y-offset', 0), 
37                                 ('framerate', (5, 1))): 
38                  ret.append(properties.get(k, default)) 
39              return ret 
40          width, height, x_offset, y_offset, framerate = getProps() 
41   
42          src = 'ximagesrc' 
43          if not gstreamer.element_factory_exists(src): 
44              raise errors.MissingElementError(src) 
45   
46          return ('%s startx=%d starty=%d endx=%d endy=%d use-damage=false' 
47                  ' ! ffmpegcolorspace' 
48                  ' ! video/x-raw-yuv,framerate=(fraction)%s,format=(fourcc)I420' 
49                  % (src, x_offset, y_offset, width + x_offset, height + y_offset, 
50                     '%d/%d' % framerate)) 
51