Passing a pointer to a cstruct

[Luís Oliveira]

On Mon, 29 Jun 2020 at 15:03, <basho1600 at pm.me> wrote:
>     (cffi:foreign-funcall
>     "v4lconvert_convert"
>     :POINTER convert-info
>     :POINTER *camera-format*
>     :POINTER *display-format*
>     :POINTER raw-image
>     :INT *local-length*
>     :POINTER pixdata
>     :INT pixbuf-size
>     :INT)
>
> It is the pointers to the two '-format' items that are causing the
> trouble I think.  Both of them were defined using defcstruct.

What are the values of those -format variables?

-- 
Luís Oliveira
http://kerno.org/~luis/