flumotion.component.producers.looper.wizard

1 # -*- Mode: Python -*- 2 # vi:si:et:sw=4:sts=4:ts=4 3 # 4 # Flumotion - a streaming media server 5 # Copyright (C) 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 import gobject 26 import gtk 27 28 from zope.interface import implements 29 30 from flumotion.configure import configure 31 from flumotion.common import errors, messages 32 from flumotion.common.i18n import N_, gettexter 33 from flumotion.admin.gtk.basesteps import AudioProducerStep, VideoProducerStep 34 from flumotion.admin.assistant.interfaces import IProducerPlugin 35 from flumotion.admin.assistant.models import AudioProducer, VideoProducer, \ 36 AudioEncoder, VideoEncoder, VideoConverter 37 from flumotion.ui.fileselector import FileSelectorDialog 38 39 __pychecker__ = 'no-returnvalues' 40 __version__ = "$Rev: 6583 $" 41 _ = gettext.gettext 42 T_ = gettexter('flumotion') 43 44

45 -class LoopProducer(AudioProducer, VideoProducer):

46 componentType = 'loop-producer' 47

48 - def __init__(self):

49 super(LoopProducer, self).__init__() 50 self.properties.location = None 51 self.properties.framerate = 5.0 52 self.properties.width = 320 53 self.properties.height = 240

54

55 - def getFeederName(self, component):

56 if isinstance(component, AudioEncoder): 57 return 'audio' 58 elif isinstance(component, (VideoEncoder, VideoConverter)): 59 return 'video' 60 else: 61 raise AssertionError

62 63

64 -class _LoopCommon:

65 icon = 'looper.png' 66 componentType = 'filesrc' 67 gladeFile = os.path.join(os.path.dirname(os.path.abspath(__file__)), 68 'wizard.glade') 69 70 _mimetype = 'application/ogg' 71 _audio_required = True 72 _video_required = True 73

74 - def __init__(self):

75 self._idleId = -1 76 self._blockNext = {}

77

78 - def workerChanged(self, worker):

79 self.model.worker = worker 80 self._runChecks()

81

82 - def setup(self):

83 return

84

85 - def _runChecks(self):

86 self._runFileCheck(self.model.properties.location, 'location')

87

88 - def _runFileCheck(self, location, id):

89 self._blockNext[id] = True 90 if location is None or location == '': 91 self._verify() 92 return 93 self.wizard.waitForTask('looper location check') 94 95 def checkFileFinished(result): 96 validFile, properties = result 97 if not validFile: 98 message = messages.Warning(T_(N_( 99 "'%s' is not a valid file, " 100 "or is not readable on worker '%s'.") 101 % (location, self.worker))) 102 message.id = 'looper-'+id+'-check' 103 self.wizard.add_msg(message) 104 else: 105 self._updateFileProperties(properties) 106 self.wizard.clear_msg('looper-'+id+'-check') 107 self._blockNext[id] = False 108 self.wizard.taskFinished() 109 self._verify()

110 d = self.runInWorker('flumotion.worker.checks.check', 111 'checkMediaFile', 112 location, 113 self._mimetype, 114 self._audio_required, 115 self._video_required) 116 d.addCallback(checkFileFinished)

117

118 - def _abortScheduledCheck(self):

119 if self._idleId != -1: 120 gobject.source_remove(self._idleId) 121 self._idleId = -1

122

123 - def _scheduleCheck(self, checkToRun, data, id):

124 self._abortScheduledCheck() 125 self._idleId = gobject.timeout_add(300, checkToRun, data, id)

126

127 - def _clearMessage(self, id):

128 self.wizard.clear_msg('looper-'+id+'-check') 129 self._blockNext[id] = False

130

131 - def _verify(self):

132 self.wizard.blockNext(reduce(lambda x, y: x or y, 133 self._blockNext.values(), 134 False))

135

136 - def _showFileSelector(self, response_cb, location):

137 138 def deleteEvent(fs, event): 139 pass

140 141 fs = FileSelectorDialog(self.wizard.window, 142 self.wizard.getAdminModel()) 143 144 fs.connect('response', response_cb) 145 fs.connect('delete-event', deleteEvent) 146 fs.selector.setWorkerName(self.model.worker) 147 fs.selector.setOnlyDirectoriesMode(False) 148 if location: 149 directory = os.path.dirname(location) 150 else: 151 directory = '/' 152 fs.selector.setDirectory(directory) 153 fs.show_all() 154

155 - def _updateFileProperties(self, props):

156 pass

157

158 - def on_browse_clicked(self, button):

159 160 def response(fs, response): 161 fs.hide() 162 if response == gtk.RESPONSE_OK: 163 self.model.properties.location = fs.getFilename() 164 self._proxy.update('location') 165 self._clearMessage('location') 166 self._runFileCheck(self.model.properties.location, 'location')

167 168 self._showFileSelector(response, 169 self.model.properties.location) 170

171 - def on_location_changed(self, entry):

172 self._scheduleCheck(self._runFileCheck, 173 entry.get_text(), 174 'location')

175 176

177 -class LoopVideoStep(_LoopCommon, VideoProducerStep):

178 title = _('Loop Video') 179 name = 'Loop Video' 180

181 - def __init__(self, wizard, model):

182 VideoProducerStep.__init__(self, wizard, model) 183 _LoopCommon.__init__(self)

184

185 - def setup(self):

186 self._audio_required = False 187 self.location.data_type = str 188 self.width.data_type = int 189 self.height.data_type = int 190 self.framerate.data_type = float 191 self._proxy = self.add_proxy(self.model.properties, 192 ['width', 'height', 193 'framerate', 'location'])

194

195 - def _updateFileProperties(self, props):

196 self.model.properties.width = props.get('width', 197 self.model.properties.width) 198 self.model.properties.height = props.get('height', 199 self.model.properties.height) 200 self.model.properties.framerate = props.get('framerate', 201 self.model.properties.framerate) 202 self._proxy.update('width') 203 self._proxy.update('height') 204 self._proxy.update('framerate')

205 206

207 -class LoopAudioStep(_LoopCommon, AudioProducerStep):

208 name = 'Loop audio' 209 title = _('Loop audio') 210

211 - def __init__(self, wizard, model):

212 AudioProducerStep.__init__(self, wizard, model) 213 _LoopCommon.__init__(self)

214

215 - def setup(self):

216 self._video_required = False 217 self.location.data_type = str 218 self._proxy = self.add_proxy(self.model.properties, ['location']) 219 self.video.hide() 220 videoProducer = self.wizard.getStep('Production').getVideoProducer() 221 if not videoProducer or videoProducer.componentType != 'loop-producer': 222 self.location_box.set_sensitive(True) 223 else: 224 self.location.set_text(videoProducer.properties.location) 225 self.location_box.set_sensitive(False)

226

227 - def getNext(self):

228 return None

229 230

231 -class LoopWizardPlugin(object):

232 implements(IProducerPlugin) 233

234 - def __init__(self, wizard):

235 self.wizard = wizard

236

237 - def getProductionStep(self, type):

238 if type == 'audio': 239 return LoopAudioStep(self.wizard, LoopProducer()) 240 elif type == 'video': 241 return LoopVideoStep(self.wizard, LoopProducer())

242

Source Code for Module flumotion.component.producers.looper.wizard_gtk