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Viewing changes to pitivi/factories/operation.py

  • Committer: Bazaar Package Importer
  • Author(s): Sebastien Bacher
  • Date: 2011-05-26 15:29:58 UTC
  • mfrom: (3.1.20 experimental)
  • Revision ID: james.westby@ubuntu.com-20110526152958-90je1myzzjly26vw
Tags: 0.13.9.90-1ubuntu1
* Resynchronize on Debian
* debian/control:
  - Depend on python-launchpad-integration
  - Drop hal from Recommends to Suggests. This version has the patch applied
    to not crash without hal.
* debian/patches/01_lpi.patch:
  - launchpad integration  
* debian/rules:
  - Use gnome.mk so a translation template is built

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pitivi/factories/operation.py
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from pitivi.factories.base import OperationFactory
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from pitivi.stream import AudioStream, VideoStream
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from gettext import gettext as _
 
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# FIXME: define a proper hierarchy
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class OperationFactoryError(Exception):
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    pass
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    def _requestNewInputStream(self, *args):
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        raise OperationFactoryError("TransformFactory doesn't allow request pads")
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class EffectFactory (TransformFactory):
 
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    """
 
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    Factories that applies an effect on a stream
 
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    """
 
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    def __init__ (self, effect, name='', categories=[_("Uncategorized")],
 
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                  human_name="", description="", icon=None):
 
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        TransformFactory.__init__(self, name)
 
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        self.effectname = effect
 
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        self.categories = categories
 
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        self.description = description
 
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        self.human_name = human_name
 
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        self._setIcon(icon)
 
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    def getHumanName(self):
 
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        return self.human_name
 
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    def getDescription(self):
 
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        return self.description
 
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    def getCategories(self):
 
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        return self.categories
 
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    def _makeBin (self, *args):
 
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        bin = gst.Bin()
 
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        fx = gst.element_factory_make(self.effectname, "effect")
 
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        if isinstance(self.input_streams[0], VideoStream):
 
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            csp = gst.element_factory_make("ffmpegcolorspace")
 
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        else:
 
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            csp = gst.parse_bin_from_description("audioconvert ! audioresample",
 
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                                                 True)
 
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        bin.add(fx, csp)
 
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        csp.link(fx)
 
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        bin.add_pad(gst.GhostPad("sink", csp.get_pad("sink")))
 
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        bin.add_pad(gst.GhostPad("src", fx.get_pad("src")))
 
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        return bin
 
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    def _releaseBin(self, bin):
 
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        elements = bin.elements()
 
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        for element in elements.next():
 
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            del element
 
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    def addInputStream(self, stream):
 
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        return OperationFactory.addInputStream(self, stream)
 
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    def addOutputStream(self, stream):
 
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        return OperationFactory.addOutputStream(self, stream)
 
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class StreamModifierFactory(TransformFactory):
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    """
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    Factories that modify the nature/type of a stream.