VAR_VAL            88 libavfilter/f_drawgraph.c enum                                   { VAR_MAX, VAR_MIN, VAR_VAL, VAR_VARS_NB };
VAR_VAL            53 libavfilter/vf_lut.c     VAR_VAL,
VAR_VAL            50 libavfilter/vf_pseudocolor.c     VAR_VAL,