sws_shiftVec      283 libswscale/swscale.h void sws_shiftVec(SwsVector *a, int shift);
sws_shiftVec     1639 libswscale/utils.c         sws_shiftVec(filter->chrH, (int)(chromaHShift + 0.5));
sws_shiftVec     1642 libswscale/utils.c         sws_shiftVec(filter->chrV, (int)(chromaVShift + 0.5));