def __init__(self, parent, name, sourceType, **kwargs):
self.parent = parent
self.name = name
# Add elements common to all sources
if not requireKwargs(kwargs, ["resolution", "alpha"]):
print "Incorrect arguments supplied"
raise Exception()
self.alpha = gst.element_factory_make("alpha", "%salpha"%name)
self.alpha.set_property("alpha", kwargs["alpha"])
self.scaleCaps = gst.Caps("video/x-raw-yuv, width=%i, height=%i"%(kwargs["resolution"][0],kwargs["resolution"][1]))
self.scaleFilter = gst.element_factory_make("capsfilter", "%scaps"%name)
self.scaleFilter.set_property("caps", self.scaleCaps)
self.scaler = gst.element_factory_make("videoscale", "%sscale"%name)
self.scaler.set_property("add-borders", False)
self.rateCaps = gst.Caps("video/x-raw-yuv, framerate=30/1")
self.rateFilter = gst.element_factory_make("capsfilter", "%sratecaps"%name)
self.rateFilter.set_property("caps", self.rateCaps)
self.rate = gst.element_factory_make("videorate", "%srate"%name)
self.parent.pipeline.add(self.alpha, self.scaleFilter, self.scaler, self.rateFilter, self.rate)
# Create holder for list of elements created
self.elements = []
# Add initial elements as required
if sourceType == "image":
if not requireKwargs(kwargs, ["location"]):
print "Incorrect arguments supplied"
raise Exception()
self.src = gst.element_factory_make("filesrc", "%ssrc"%name)
self.src.set_property("location", kwargs["location"])
self.decoder = gst.element_factory_make("decodebin", "%sdec|%scolspace"%(name, name))
self.freeze = gst.element_factory_make("imagefreeze", "%sfreeze"%name)
self.colorspace = gst.element_factory_make("ffmpegcolorspace", "%scolspace"%name)
self.parent.pipeline.add(self.src, self.decoder, self.freeze, self.colorspace)
gst.element_link_many(self.src, self.decoder)
gst.element_link_many(self.colorspace, self.scaler, self.scaleFilter, self.freeze, self.alpha, self.rateFilter)
self.lastElement = self.rateFilter
self.decoder.connect("new-decoded-pad", self.new_decoded_pad)
self.hangingConnections += 1
self.parent.asyncStart = True
elif sourceType == "pattern":
if not requireKwargs(kwargs, ["pattern"]):
print "Incorrect arguments supplied"
raise Exception()
self.src = gst.element_factory_make("videotestsrc", "%ssrc"%name)
self.src.set_property("pattern", kwargs["pattern"])
self.parent.pipeline.add(self.src)
gst.element_link_many(self.src, self.scaler, self.scaleFilter, self.alpha, self.rateFilter)
self.lastElement = self.rateFilter
def __init__(self, *args, **kwargs): if not requireKwargs(kwargs, ["mixer", "window"]): print "Controller base kwargs not found" raise Exception() self.mixer = kwargs["mixer"] self.window = kwargs["window"]
