INTERPP           224 libavfilter/vf_fade.c             pr[j] = INTERPP(pr[j], 0);
INTERPP           225 libavfilter/vf_fade.c             pg[j] = INTERPP(pg[j], 1);
INTERPP           226 libavfilter/vf_fade.c             pb[j] = INTERPP(pb[j], 2);
INTERPP           228 libavfilter/vf_fade.c                 pa[j] = INTERPP(pa[j], 3);