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GObject ╰── GInitiallyUnowned ╰── GstObject ╰── GstElement ╰── GstBin ╰── GstGLSrcBin
“create-element” signalGstElement* user_function (GstGLSrcBin *object, gpointer user_data)
Will be emitted when we need the processing element/s that this bin will use
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