FF_INLINK_IDX     328 libavfilter/internal.h #define FF_INLINK_IDX(link)  ((int)((link)->dstpad - (link)->dst->input_pads))
FF_INLINK_IDX      31 libavfilter/qsvvpp.h #define FF_INLINK_IDX(link)  ((int)((link)->dstpad - (link)->dst->input_pads))