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43 // 2004-03-16, Gabriel Schreiber <schreiber@ient.rwth-aachen.de>
44 // Mark Asbach <asbach@ient.rwth-aachen.de>
45 // Institute of Communications Engineering, RWTH Aachen University
49 * We set our own error handling function using cvRedirectError.
51 * This function throws an error (OpenCV itself never throws) which
52 * we catch here. The error handling function (SendErrorToPython)
53 * sets the Python error.
54 * We need to return 0 here instead of an PyObject to tell Python
55 * that an error has occured.
67 /* include exception.i, so we can generate exceptions when we found errors */
68 %include "exception.i"
73 * IplImage has no reference counting of underlying data, which creates problems with double
74 * frees after accessing subarrays in python -- instead, replace IplImage with CvMat, which
75 * should be functionally equivalent, but has reference counting.
76 * The potential shortcomings of this method are
78 * 2. IplImage fields missing or named something else.
80 %typemap(in) IplImage * (IplImage header){
82 int res = SWIG_ConvertPtr($input, (&vptr), $descriptor( CvMat * ), 0);
84 SWIG_exception( SWIG_TypeError, "%%typemap(in) IplImage * : could not convert to CvMat");
87 $1 = cvGetImage((CvMat *)vptr, &header);
90 /** For IplImage * return type, there are cases in which the memory should be freed and
91 * some not. To avoid leaks and segfaults, deprecate this return type and handle cases
94 %typemap(out) IplImage * {
95 SWIG_exception( SWIG_TypeError, "IplImage * return type is deprecated. Please file a bug report at www.sourceforge.net/opencvlibrary if you see this error message.");
99 /** macro to convert IplImage return type to CvMat. Note that this is only covers the case
100 * where the returned IplImage need not be freed. If the IplImage header needs to be freed,
101 * then CvMat must take ownership of underlying data. Instead, just handle these limited cases
102 * with CvMat equivalent.
104 %define %typemap_out_CvMat(func, decl, call)
105 %rename (func##__Deprecated) func;
106 %rename (func) func##__CvMat;
108 CvMat * func##__CvMat##decl{
109 IplImage * im = func##call;
111 CvMat * mat = (CvMat *)cvAlloc(sizeof(CvMat));
112 mat = cvGetMat(im, mat);