sws_scaleVec     2854 libswscale/swscale.c         sws_scaleVec(filter->chrH, -chromaSharpen);
sws_scaleVec     2855 libswscale/swscale.c         sws_scaleVec(filter->chrV, -chromaSharpen);
sws_scaleVec     2863 libswscale/swscale.c         sws_scaleVec(filter->lumH, -lumaSharpen);
sws_scaleVec     2864 libswscale/swscale.c         sws_scaleVec(filter->lumV, -lumaSharpen);
sws_scaleVec     2945 libswscale/swscale.c     sws_scaleVec(a, height/sws_dcVec(a));