sws_addVec       2856 libswscale/swscale.c         sws_addVec(filter->chrH, id);
sws_addVec       2857 libswscale/swscale.c         sws_addVec(filter->chrV, id);
sws_addVec       2865 libswscale/swscale.c         sws_addVec(filter->lumH, id);
sws_addVec       2866 libswscale/swscale.c         sws_addVec(filter->lumV, id);