PNG_OFFSET_MICROMETER  220 3rdparty/libpng/pngget.c       if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
PNG_OFFSET_MICROMETER  236 3rdparty/libpng/pngget.c       if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)