# File gstreamer/sample/xml-ogg-player.rb, line 16
def build_pipeline(file)
    src = Gst::ElementFactory.make("filesrc")
    dec = Gst::ElementFactory.make("vorbisfile")
    sink = Gst::ElementFactory.make("osssink")
    src.location = file
    src >> dec >> sink
    pipe = Gst::Pipeline.new("our_ogg_pipeline")
    pipe.add(src, dec, sink)
    pipe
end