FillGrayRow4      245 modules/imgcodecs/src/grfmt_bmp.cpp                         FillGrayRow4( data, src, m_width, gray_palette );
FillGrayRow4      289 modules/imgcodecs/src/grfmt_bmp.cpp                             data = FillGrayRow4( data, src, code, gray_palette );
FillGrayRow4      119 modules/imgcodecs/src/utils.hpp uchar* FillGrayRow4( uchar* data, uchar* indices, int len, uchar* palette );