sws_normalizeVec 2876 libswscale/swscale.c     sws_normalizeVec(filter->chrH, 1.0);
sws_normalizeVec 2877 libswscale/swscale.c     sws_normalizeVec(filter->chrV, 1.0);
sws_normalizeVec 2878 libswscale/swscale.c     sws_normalizeVec(filter->lumH, 1.0);
sws_normalizeVec 2879 libswscale/swscale.c     sws_normalizeVec(filter->lumV, 1.0);
sws_normalizeVec 2903 libswscale/swscale.c     sws_normalizeVec(vec, 1.0);