> > And all this doesn't address the fact that these functions have never
> > been documented, and don't seem used in the outside world
> > (understandably so, since there's no way to know about their existence,
> > and their intended use).
> 
> That's a documentation bug and probably the result of the fact
> that none of the exposed encoder/decoder APIs are documented.

Are you planning to fix it? It is not obvious anybody else is able to
properly document those functions.