lumaSumCu         248 source/encoder/slicetype.cpp                     uint32_t sum = lumaSumCu(curFrame, blockX, blockY, param->rc.qgSize);
lumaSumCu          94 source/encoder/slicetype.h     uint32_t lumaSumCu(Frame* curFrame, uint32_t blockX, uint32_t blockY, uint32_t qgSize);