Hello all!
I'm trying to writing bindings for libsoundio (http://libsound.io), and am
struggling with callbacks. Callbacks in libsoundio are members of structs,
while all of the MIT Scheme FFI callback examples pass callbacks as
arguments into functions.
Specifically, there's a struct OutStream that has a member write_callback
that I need to set.
struct OutStream {
...
void *userdata;
void (*write_callback)(struct OutStream *, int min, int max);
...
}
In the libsoundio examples it's done directly with
outstream->write_callback = write_callback;
How can I declare and set a Scheme callback in a struct like this?
Thanks and hello,
- Joel
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