readComponent8u   255 modules/imgcodecs/src/grfmt_jpeg2000.cpp                                 result = readComponent8u( data + i, buffer, step, cmptlut[i], maxval, offset, ncmpts );
readComponent8u    66 modules/imgcodecs/src/grfmt_jpeg2000.hpp     bool  readComponent8u( uchar *data, void *buffer, int step, int cmpt,