GST_PAD_CHAINFUNC  358 gst/gstpad.c     GST_PAD_CHAINFUNC (pad) = NULL;
GST_PAD_CHAINFUNC 1268 gst/gstpad.c     GST_PAD_CHAINFUNC (pad) = chain;
GST_PAD_CHAINFUNC 4170 gst/gstpad.c       if (G_UNLIKELY ((chainfunc = GST_PAD_CHAINFUNC (pad)) == NULL))
GST_PAD_CHAINFUNC  497 plugins/elements/gsttypefindelement.c       if (peer && GST_PAD_CHAINFUNC (peer) == NULL) {