FFI, Ogg Vorbis, and char[]
Jason Dufair
jase at dufair.org
Mon Nov 25 00:44:50 UTC 2002
Bert Freudenberg wrote:
>I think the field specs can have a byteSize parameter. Maybe this just
>works?
>
>#( ...
> (header 'char' 282)
> ... )
>
>
Heh. Talk about a case of RTFM. Sorry I overlooked that. This is
exactly what I was looking for. A few other questions for anyone who
may be familiar with FFI:
If I have something declared in a C header as, for example, char**, can
FFI handle pointers to pointers?
I need to pass a file pointer in to a foreign function. Is there some
way to get a file pointer in Smalltalk?
I have a recursive struct (a linked list, it seems). Declared like:
struct alloc_chain{
void *ptr;
struct alloc_chain *next;
};
Trying to initialize the class (which does something like
#enumerateFields or some such) when I define the fields method on the
class side as
fields
^#(
('ptr' 'void*')
('next' 'AllocChain'))
sends Squeak out to lunch. I've tried declaring 'next' as 'void*', but
I'm not sure if that will work. Any ideas?
Thanks for your help, all. I'm no c hacker, but I sure hope I can get
this to work via FFI. Otherwise it's off to named primitives (blech!)
Jason Dufair
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