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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.admin.assistant.interfaces import IEncoderPlugin 28 from flumotion.admin.assistant.models import VideoEncoder 29 from flumotion.common.fraction import fractionAsFloat 30 from flumotion.admin.gtk.basesteps import VideoEncoderStep 31 32 __version__ = "$Rev: 7626 $" 33 _ = gettext.gettext 34 3537 """ 38 @ivar framerate: number of frames per second; to be set by view 39 @type framerate: float 40 """ 41 componentType = 'theora-encoder' 4281 8244 super(TheoraVideoEncoder, self).__init__() 45 self.has_quality = False 46 self.has_bitrate = True 47 self.framerate = 25.0 48 49 self.properties.noise_sensitivity = 0 50 self.properties.keyframe_delta = 2.0 51 self.properties.bitrate = 400 52 self.properties.quality = 16 53 self.properties.sharpness = 05456 properties = super(TheoraVideoEncoder, self).getProperties() 57 if self.has_bitrate: 58 del properties.quality 59 properties.bitrate *= 1000 60 elif self.has_quality: 61 del properties.bitrate 62 else: 63 raise AssertionError 64 65 properties.noise_sensitivity = max( 66 int(properties.noise_sensitivity * (32768 / 100.)), 1) 67 68 # convert the human-friendly delta to maxdistance 69 # FIXME: I think the theora-encoder component should not expose 70 # the theora element properties directly, but just have keyframe-delta 71 # directly and calculate GStreamer element properties. But that's a 72 # property change. 73 properties.keyframe_maxdistance = int(properties.keyframe_delta * 74 self.framerate) 75 del properties.keyframe_delta 76 77 self.debug('keyframe_maxdistance: %r', 78 properties.keyframe_maxdistance) 79 80 return properties84 name = 'TheoraEncoder' 85 title = _('Theora Encoder') 86 sidebarName = _('Theora') 87 gladeFile = os.path.join(os.path.dirname(os.path.abspath(__file__)), 88 'wizard.glade') 89 componentType = 'theora' 90 icon = 'xiphfish.png' 91 docSection = 'help-configuration-assistant-encoder-theora' 92 docAnchor = '' 93 docVersion = 'local' 94 95 # WizardStep 96133 134 # Callbacks 135 143 144 15498 self.bitrate.data_type = int 99 self.quality.data_type = int 100 self.noise_sensitivity.data_type = int 101 self.keyframe_delta.data_type = float 102 self.sharpness.data_type = int 103 self.has_quality.data_type = bool 104 self.has_bitrate.data_type = bool 105 106 self.add_proxy(self.model, 107 ['has_quality', 'has_bitrate']) 108 self.add_proxy(self.model.properties, 109 ['bitrate', 'quality', 'keyframe_delta', 110 'noise_sensitivity', 'sharpness']) 111 112 # we specify keyframe_delta in seconds, but theora expects 113 # a number of frames, so we need the framerate and calculate 114 # we need to go through the Step (which is the view) because models 115 # don't have references to other models 116 producer = self.wizard.getScenario().getVideoProducer(self.wizard) 117 self.model.framerate = fractionAsFloat(producer.getFramerate()) 118 self.debug('Framerate of video producer: %r' % self.model.framerate) 119 step = 1 / self.model.framerate 120 page = 1.0 121 self.keyframe_delta.set_increments(step, page)122124 self.model.worker = worker 125 126 def hasTheora(unused, worker): 127 self.wizard.runInWorker( 128 worker, 'flumotion.worker.checks.encoder', 'checkTheora')129 130 self.wizard.debug('running Theora checks') 131 d = self.wizard.requireElements(worker, 'theoraenc') 132 d.addCallback(hasTheora, worker)
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