the function I'm trying to wrap is here
CV_INLINE CvPoint cvPoint( int x, int y ) { CvPoint p;
p.x = x; p.y = y;
return p; }
and here is the related struct
typedef struct CvPoint { int x; int y; } CvPoint;
I wrap it like this like I normally do
; this is how swig wrapped the defcstruct
(cffi:defcstruct cv-point (x :int) (y :int))
;; CvPoint cvPoint(int x, int y) (cffi:defcfun ("cvPoint" pointy) (:struct cv-point) "constructs CvPoint structure." (x :int) (y :int))
the wrapper i made runs at the repl but when i call the function i get error
CL-OPENCV> (point 7 7)
The value NIL is not of type SB-SYS:SYSTEM-AREA-POINTER. [Condition of type TYPE-ERROR]
Backtrace: 0: (CFFI::CALL #.(SB-SYS:INT-SAP #X7FFFE0000E10) NIL #.(SB-SYS:INT-SAP #X7FFFE5427FD0) #.(SB-SYS:INT-SAP #X7FFFE5427FD8)) Locals: SB-DEBUG::ARG-0 = #.(SB-SYS:INT-SAP #X7FFFE0000E10) SB-DEBUG::ARG-1 = NIL SB-DEBUG::ARG-2 = #.(SB-SYS:INT-SAP #X7FFFE5427FD0) SB-DEBUG::ARG-3 = #.(SB-SYS:INT-SAP #X7FFFE5427FD8)
in the backtrace it appears to be linking 4 parameters and i think its because of this
CV_INLINE CvPoint cvPoint( int x, int y ) { CvPoint p;
p.x = x; p.y = y;
return p; }
because their are 4 items in the CV_INLINE
I was hoping someone could help me get by this error message