sws_printVec2     295 libswscale/swscale.h void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level);
sws_printVec2    1650 libswscale/utils.c         sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);
sws_printVec2    1652 libswscale/utils.c         sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);