partialButterflyInverse4  552 source/common/dct.cpp     partialButterflyInverse4(src, coef, shift_1st, 4); // Forward DST BY FAST ALGORITHM, block input, coef output
partialButterflyInverse4  553 source/common/dct.cpp     partialButterflyInverse4(coef, block, shift_2nd, 4); // Forward DST BY FAST ALGORITHM, coef input, coeff output