[Freetype] How to find a specific sfnt table?

[Huw D M Davies]

Hi,

I'm wondering what is the correct way to load a given sfnt table.
What I'd like is exactly the functionality of:

FT_Face face;
SFNT_Interface *sfnt = ((TT_Face)face)->sfnt;

err = sfnt->load_any((TT_Face)face, table, offs, buf, &len);

but I'm worried that the structures TT_Face and SFNT_Interface are
subject to change from version to version.

Any help would be greatly appreciated.

Many thanks,
Huw.