Unlinks the source pad from the sink pad. Will emit the #GstPad::unlinked signal on both pads.
the sink #GstPad to unlink.
true if the pads were unlinked. This function returns false if the pads were not linked together.
MT safe.
Unlinks the source pad from the sink pad. Will emit the #GstPad::unlinked signal on both pads.