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  • Committer: Bazaar Package Importer
  • Author(s): Loic Minier
  • Date: 2007-01-31 15:32:37 UTC
  • mto: (3.2.1 hardy) (1.2.1 upstream) (6.1.1 sid)
  • mto: This revision was merged to the branch mainline in revision 4.
  • Revision ID: james.westby@ubuntu.com-20070131153237-de4p8lipjv8x5x3b
Tags: upstream-0.10.2
Import upstream version 0.10.2

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pitivi/timeline/timeline.py
 
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# PiTiVi , Non-linear video editor
 
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#
 
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#       pitivi/timeline.py
 
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#
 
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# Copyright (c) 2005, Edward Hervey <bilboed@bilboed.com>
 
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#
 
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# This program is free software; you can redistribute it and/or
 
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# modify it under the terms of the GNU Lesser General Public
 
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# License as published by the Free Software Foundation; either
 
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# version 2.1 of the License, or (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
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# Lesser General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU Lesser General Public
 
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# License along with this program; if not, write to the
 
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# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 
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# Boston, MA 02111-1307, USA.
 
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"""
 
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Timeline and timeline objects
 
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"""
 
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import gobject
 
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import gst
 
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from pitivi.settings import ExportSettings
 
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from composition import TimelineComposition
 
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from objects import MEDIA_TYPE_AUDIO, MEDIA_TYPE_VIDEO
 
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class Timeline(gobject.GObject):
 
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    """
 
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    Fully fledged timeline
 
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    """
 
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    # TODO make the compositions more versatile
 
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    # for the time being we hardcode an audio and a video composition
 
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    def __init__(self, project):
 
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        gst.log("new Timeline for project %s" % project)
 
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        gobject.GObject.__init__(self)
 
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        self.project = project
 
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        self.timeline = gst.Bin("timeline-" + project.name)
 
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        self._fillContents()
 
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    def _fillContents(self):
 
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        # TODO create the initial timeline according to the project settings
 
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        self.audiocomp = TimelineComposition(media_type = MEDIA_TYPE_AUDIO, name="audiocomp")
 
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        self.videocomp = TimelineComposition(media_type = MEDIA_TYPE_VIDEO, name="videocomp")
 
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        self.videocomp.linkObject(self.audiocomp)
 
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        # add default audio/video sources
 
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        defaultaudio = gst.element_factory_make("audiotestsrc")
 
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        defaultaudio.props.volume = 0
 
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        defaultaudiosource = gst.element_factory_make("gnlsource", "defaultaudiosource")
 
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        defaultaudiosource.add(defaultaudio)
 
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        self.audiocomp.setDefaultSource(defaultaudiosource)
 
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        defaultvideo = gst.element_factory_make("videotestsrc")
 
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        defaultvideo.props.pattern = 2
 
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        defaultvideosource = gst.element_factory_make("gnlsource", "defaultvideosource")
 
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        defaultvideosource.add(defaultvideo)
 
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        self.videocomp.setDefaultSource(defaultvideosource)
 
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        self.timeline.add(self.audiocomp.gnlobject,
 
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                          self.videocomp.gnlobject)
 
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        self.audiocomp.gnlobject.connect("pad-added", self._newAudioPadCb)
 
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        self.videocomp.gnlobject.connect("pad-added", self._newVideoPadCb)
 
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        self.audiocomp.gnlobject.connect("pad-removed", self._removedAudioPadCb)
 
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        self.videocomp.gnlobject.connect("pad-removed", self._removedVideoPadCb)
 
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    def _newAudioPadCb(self, unused_audiocomp, pad):
 
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        asrc = gst.GhostPad("asrc", pad)
 
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        asrc.set_active(True)
 
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        self.timeline.add_pad(asrc)
 
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    def _newVideoPadCb(self, unused_videocomp, pad):
 
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        vsrc = gst.GhostPad("vsrc", pad)
 
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        vsrc.set_active(True)
 
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        self.timeline.add_pad(vsrc)
 
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    def _removedAudioPadCb(self, unused_audiocomp, unused_pad):
 
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        self.timeline.remove_pad(self.timeline.get_pad("asrc"))
 
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    def _removedVideoPadCb(self, unused_audiocomp, unused_pad):
 
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        self.timeline.remove_pad(self.timeline.get_pad("vsrc"))
 
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    def getAutoSettings(self):
 
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        v = self.videocomp._getAutoSettings()
 
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        a = self.audiocomp._getAutoSettings()
 
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        if not v and not a:
 
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            return None
 
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        # return an ExportSettings containing the combination of
 
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        # the autosettings from the audio and video composition.
 
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        s = ExportSettings()
 
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        if v:
 
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            s.videowidth = v.videowidth
 
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            s.videoheight = v.videoheight
 
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            s.videorate = v.videorate
 
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            s.videopar = v.videopar
 
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        if a:
 
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            s.audiochannels = a.audiochannels
 
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            s.audiorate = a.audiorate
 
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            s.audiodepth = a.audiodepth
 
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        return s
 
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