Package flumotion :: Package component :: Package encoders :: Package jpeg :: Module wizard_gtk
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Source Code for Module flumotion.component.encoders.jpeg.wizard_gtk

 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 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 gettext 
23  import os 
24   
25  from zope.interface import implements 
26   
27  from flumotion.wizard.basesteps import VideoEncoderStep 
28  from flumotion.wizard.interfaces import IEncoderPlugin 
29  from flumotion.wizard.models import VideoEncoder 
30   
31  __version__ = "$Rev: 6765 $" 
32  _ = gettext.gettext 
33   
34   
35 -def _fraction_from_float(number, denominator):
36 """ 37 Return a string to be used in serializing to XML. 38 """ 39 return "%d/%d" % (number * denominator, denominator)
40 41
42 -class JPEGVideoEncoder(VideoEncoder):
43 componentType = 'jpeg-encoder' 44
45 - def __init__(self):
46 super(JPEGVideoEncoder, self).__init__() 47 48 self.properties.framerate = 5.0 49 self.properties.quality = 84
50
51 - def getProperties(self):
52 properties = super(JPEGVideoEncoder, self).getProperties() 53 properties.framerate = _fraction_from_float(properties.framerate, 2) 54 return properties
55 56
57 -class JPEGStep(VideoEncoderStep):
58 name = 'JPEG encoder' 59 title = _('JPEG encoder') 60 sidebarName = 'JPEG' 61 section = _('Conversion') 62 gladeFile = os.path.join(os.path.dirname(os.path.abspath(__file__)), 63 'wizard.glade') 64 componentType = 'jpeg' 65 66 # WizardStep 67
68 - def setup(self):
69 self.framerate.data_type = float 70 self.quality.data_type = int 71 72 self.add_proxy(self.model.properties, 73 ['framerate', 'quality'])
74
75 - def workerChanged(self, worker):
76 self.model.worker = worker 77 self.wizard.requireElements(worker, 'jpegenc')
78 79
80 -class JPEGWizardPlugin(object):
81 implements(IEncoderPlugin)
82 - def __init__(self, wizard):
83 self.wizard = wizard 84 self.model = JPEGVideoEncoder()
85
86 - def getConversionStep(self):
87 return JPEGStep(self.wizard, self.model)
88