opencv/interfaces/swig/octave/octhelpers.i

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/* These functions need the SWIG_* functions defined in the wrapper */
%{
static inline bool OctSwigObject_Check(const octave_value& ov) {
return ov.type_id()==octave_swig_ref::static_type_id();
}
static CvArr * OctObject_to_CvArr(octave_value obj, bool * freearg);
static CvArr * OctSequence_to_CvArr( octave_value obj );
// convert a octave sequence/array/list object into a c-array
#define OctObject_AsArrayImpl(func, ctype, ptype) \
int func(octave_value obj, ctype * array, int len){ \
void * mat_vptr=NULL; \
void * im_vptr=NULL; \
if(OctNumber_Check(obj)){ \
memset( array, 0, sizeof(ctype)*len ); \
array[0] = OctObject_As##ptype( obj ); \
} \
else if(OctList_Check(obj) || OctTuple_Check(obj)){ \
int seqsize = OctSequence_Size(obj); \
for(int i=0; i<len && i<seqsize; i++){ \
if(i<seqsize){ \
array[i] = OctObject_As##ptype( OctSequence_GetItem(obj, i) ); \
} \
else{ \
array[i] = 0; \
} \
} \
} \
else if( SWIG_ConvertPtr(obj, &mat_vptr, SWIGTYPE_p_CvMat, 0)!=-1 || \
SWIG_ConvertPtr(obj, &im_vptr, SWIGTYPE_p__IplImage, 0)!=-1) \
{ \
CvMat * mat = (CvMat *) mat_vptr; \
CvMat stub; \
if(im_vptr) mat = cvGetMat(im_vptr, &stub); \
if( mat->rows!=1 && mat->cols!=1 ){ \
error("OctObject_As*Array: CvArr must be row or column vector" ); \
return -1; \
} \
if( mat->rows==1 && mat->cols==1 ){ \
CvScalar val; \
if( len!=CV_MAT_CN(mat->type) ){ \
error("OctObject_As*Array: CvArr channels != length" ); \
return -1; \
} \
val = cvGet1D(mat, 0); \
for(int i=0; i<len; i++){ \
array[i] = (ctype) val.val[i]; \
} \
} \
else{ \
mat = cvReshape(mat, &stub, -1, mat->rows*mat->cols); \
if( mat->rows != len ){ \
error("OctObject_As*Array: CvArr rows or cols must equal length" ); \
return -1; \
} \
for(int i=0; i<len; i++){ \
CvScalar val = cvGet1D(mat, i); \
array[i] = (ctype) val.val[0]; \
} \
} \
} \
else{ \
error("OctObject_As*Array: Expected a number, sequence or CvArr" ); \
return -1; \
} \
return 0; \
}
OctObject_AsArrayImpl( OctObject_AsFloatArray, float, Double );
OctObject_AsArrayImpl( OctObject_AsDoubleArray, double, Double );
OctObject_AsArrayImpl( OctObject_AsLongArray, int, Long );
static CvPoint OctObject_to_CvPoint(octave_value obj){
CvPoint val;
CvPoint *ptr;
CvPoint2D32f * ptr2D32f;
CvScalar * scalar;
if( SWIG_ConvertPtr(obj, (void**)&ptr, SWIGTYPE_p_CvPoint, 0) != -1) {
return *ptr;
}
if( SWIG_ConvertPtr(obj, (void**)&ptr2D32f, SWIGTYPE_p_CvPoint2D32f, 0) != -1) {
return cvPointFrom32f( *ptr2D32f );
}
if( SWIG_ConvertPtr(obj, (void**)&scalar, SWIGTYPE_p_CvScalar, 0) != -1) {
return cvPointFrom32f(cvPoint2D32f( scalar->val[0], scalar->val[1] ));
}
if(OctObject_AsLongArray(obj, (int *) &val, 2) != -1){
return val;
}
error("could not convert to CvPoint");
return cvPoint(0,0);
}
static CvPoint2D32f OctObject_to_CvPoint2D32f(octave_value obj){
CvPoint2D32f val;
CvPoint2D32f *ptr2D32f;
CvPoint *ptr;
CvScalar * scalar;
if( SWIG_ConvertPtr(obj, (void**)&ptr2D32f, SWIGTYPE_p_CvPoint2D32f, 0) != -1) {
return *ptr2D32f;
}
if( SWIG_ConvertPtr(obj, (void**)&ptr, SWIGTYPE_p_CvPoint, 0) != -1) {
return cvPointTo32f(*ptr);
}
if( SWIG_ConvertPtr(obj, (void**)&scalar, SWIGTYPE_p_CvScalar, 0) != -1) {
return cvPoint2D32f( scalar->val[0], scalar->val[1] );
}
if(OctObject_AsFloatArray(obj, (float *) &val, 2) != -1){
return val;
}
error("could not convert to CvPoint2D32f");
return cvPoint2D32f(0,0);
}
static CvScalar OctObject_to_CvScalar(octave_value obj){
CvScalar val;
CvScalar * ptr;
CvPoint2D32f *ptr2D32f;
CvPoint *pt_ptr;
void * vptr;
if( SWIG_ConvertPtr(obj, &vptr, SWIGTYPE_p_CvScalar, 0 ) != -1)
{
ptr = (CvScalar *) vptr;
return *ptr;
}
if( SWIG_ConvertPtr(obj, (void**)&ptr2D32f, SWIGTYPE_p_CvPoint2D32f, 0) != -1) {
return cvScalar(ptr2D32f->x, ptr2D32f->y);
}
if( SWIG_ConvertPtr(obj, (void**)&pt_ptr, SWIGTYPE_p_CvPoint, 0) != -1) {
return cvScalar(pt_ptr->x, pt_ptr->y);
}
if(OctObject_AsDoubleArray(obj, val.val, 4)!=-1){
return val;
}
return cvScalar(-1,-1,-1,-1);
}
// if octave sequence type, convert to CvMat or CvMatND
static CvArr * OctObject_to_CvArr(octave_value obj, bool * freearg){
CvArr * cvarr;
*freearg = false;
// check if OpenCV type
if ( OctSwigObject_Check(obj) ){
SWIG_ConvertPtr(obj, &cvarr, 0, SWIG_POINTER_EXCEPTION);
}
else if (OctList_Check(obj) || OctTuple_Check(obj)){
cvarr = OctSequence_to_CvArr( obj );
*freearg = (cvarr != NULL);
}
else if (OctLong_Check(obj) && OctLong_AsLong(obj)==0){
return NULL;
}
else {
SWIG_ConvertPtr(obj, (void**)&cvarr, 0, SWIG_POINTER_EXCEPTION);
}
return cvarr;
}
static int OctObject_GetElemType(octave_value obj){
void *vptr;
if(SWIG_ConvertPtr(obj, &vptr, SWIGTYPE_p_CvPoint, 0) != -1) return CV_32SC2;
if(SWIG_ConvertPtr(obj, &vptr, SWIGTYPE_p_CvSize, 0) != -1) return CV_32SC2;
if(SWIG_ConvertPtr(obj, &vptr, SWIGTYPE_p_CvRect, 0) != -1) return CV_32SC4;
if(SWIG_ConvertPtr(obj, &vptr, SWIGTYPE_p_CvSize2D32f, 0) != -1) return CV_32FC2;
if(SWIG_ConvertPtr(obj, &vptr, SWIGTYPE_p_CvPoint2D32f, 0) != -1) return CV_32FC2;
if(SWIG_ConvertPtr(obj, &vptr, SWIGTYPE_p_CvPoint3D32f, 0) != -1) return CV_32FC3;
if(SWIG_ConvertPtr(obj, &vptr, SWIGTYPE_p_CvPoint2D64f, 0) != -1) return CV_64FC2;
if(SWIG_ConvertPtr(obj, &vptr, SWIGTYPE_p_CvPoint3D64f, 0) != -1) return CV_64FC3;
if(SWIG_ConvertPtr(obj, &vptr, SWIGTYPE_p_CvScalar, 0) != -1) return CV_64FC4;
if(OctTuple_Check(obj) || OctList_Check(obj)) return CV_MAKE_TYPE(CV_32F, OctSequence_Size( obj ));
if(OctLong_Check(obj)) return CV_32S;
return CV_32F;
}
// Would like this to convert Octave lists to CvMat
// Also lists of CvPoints, CvScalars, CvMats? etc
static CvArr * OctSequence_to_CvArr( octave_value obj ){
int dims[CV_MAX_DIM] = {1,1,1};
int ndim=0;
int cvtype;
octave_value item;
// figure out dimensions
for(item = obj;
(OctTuple_Check(item) || OctList_Check(item));
item = OctSequence_GetItem(item, 0))
{
dims[ndim] = OctSequence_Size( item );
ndim++;
}
if(ndim==0){
error("Cannot convert an empty octave object to a CvArr");
return NULL;
}
cvtype = OctObject_GetElemType(item);
// collapse last dim into NCH if we found a single channel, but the last dim is <=3
if(CV_MAT_CN(cvtype)==1 && dims[ndim-1]>1 && dims[ndim-1]<4){
cvtype=CV_MAKE_TYPE(cvtype, dims[ndim-1]);
dims[ndim-1]=1;
ndim--;
}
if(cvtype==-1){
error("Could not determine OpenCV element type of Octave sequence");
return NULL;
}
// CvMat
if(ndim<=2){
CvMat *m = cvCreateMat(dims[0], dims[1], cvtype);
for(int i=0; i<dims[0]; i++){
octave_value rowobj = OctSequence_GetItem(obj, i);
if( dims[1] > 1 ){
// double check size
assert((OctTuple_Check(rowobj) || OctList_Check(rowobj)) &&
OctSequence_Size(rowobj) == dims[1]);
for(int j=0; j<dims[1]; j++){
octave_value colobj = OctSequence_GetItem(rowobj, j);
cvSet2D( m, i, j, OctObject_to_CvScalar( colobj ) );
}
}
else{
cvSet1D(m, i, OctObject_to_CvScalar( rowobj ) );
}
}
return (CvArr *) m;
}
// CvMatND
error("Cannot convert Octave Object to CvArr -- ndim > 3");
return NULL;
}
%}