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/* These functions need the SWIG_* functions defined in the wrapper */
%{
#include "pyhelpers.h"
static CvArr * PyObject_to_CvArr(PyObject * obj, bool * freearg);
// convert a python sequence/array/list object into a c-array
#define PyObject_AsArrayImpl(func, ctype, ptype) \
int func(PyObject * obj, ctype * array, int len){ \
void * mat_vptr=NULL; \
void * im_vptr=NULL; \
if(PyNumber_Check(obj)){ \
memset( array, 0, sizeof(ctype)*len ); \
array[0] = PyObject_As##ptype( obj ); \
} \
else if(PyList_Check(obj) || PyTuple_Check(obj)){ \
int seqsize = PySequence_Size(obj); \
for(int i=0; i<len && i<seqsize; i++){ \
if(i<seqsize){ \
array[i] = PyObject_As##ptype( PySequence_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 ){ \
PyErr_SetString( PyExc_TypeError, \
"PyObject_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) ){ \
PyErr_SetString( PyExc_TypeError, \
"PyObject_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 ){ \
PyErr_SetString( PyExc_TypeError, \
"PyObject_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{ \
PyErr_SetString( PyExc_TypeError, \
"PyObject_As*Array: Expected a number, sequence or CvArr" ); \
return -1; \
} \
return 0; \
}
PyObject_AsArrayImpl( PyObject_AsFloatArray, float, Double );
PyObject_AsArrayImpl( PyObject_AsDoubleArray, double, Double );
PyObject_AsArrayImpl( PyObject_AsLongArray, int, Long );
static CvPoint PyObject_to_CvPoint(PyObject * 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(PyObject_AsLongArray(obj, (int *) &val, 2) != -1){
return val;
}
PyErr_SetString( PyExc_TypeError, "could not convert to CvPoint");
return cvPoint(0,0);
}
static CvPoint2D32f PyObject_to_CvPoint2D32f(PyObject * 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(PyObject_AsFloatArray(obj, (float *) &val, 2) != -1){
return val;
}
PyErr_SetString(PyExc_TypeError, "could not convert to CvPoint2D32f");
return cvPoint2D32f(0,0);
}
/* Check if this object can be interpreted as a CvScalar */
static bool CvScalar_Check(PyObject * obj){
void * vptr;
CvScalar val;
return SWIG_ConvertPtr(obj, &vptr, SWIGTYPE_p_CvScalar, 0 ) != -1 ||
SWIG_ConvertPtr(obj, &vptr, SWIGTYPE_p_CvPoint2D32f, 0 ) != -1 ||
SWIG_ConvertPtr(obj, &vptr, SWIGTYPE_p_CvPoint, 0 ) != -1 ||
PyObject_AsDoubleArray(obj, val.val, 4) !=-1;
}
static CvScalar PyObject_to_CvScalar(PyObject * 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(PyObject_AsDoubleArray(obj, val.val, 4)!=-1){
return val;
}
return cvScalar(-1,-1,-1,-1);
}
static int CvArr_Check( PyObject * obj )
{
void *ptr;
if( obj == Py_None ||
SWIG_IsOK( SWIG_ConvertPtr(obj, &ptr, SWIGTYPE_p_void, 0) ) ||
SWIG_IsOK( SWIG_ConvertPtr(obj, &ptr, SWIGTYPE_p_CvMat, 0) ) ||
SWIG_IsOK( SWIG_ConvertPtr(obj, &ptr, SWIGTYPE_p_CvSeq, 0) ) ||
SWIG_IsOK( SWIG_ConvertPtr(obj, &ptr, SWIGTYPE_p_CvContour, 0) ) ||
SWIG_IsOK( SWIG_ConvertPtr(obj, &ptr, SWIGTYPE_p_CvSparseMat, 0) ) ||
SWIG_IsOK( SWIG_ConvertPtr(obj, &ptr, SWIGTYPE_p_CvMatND, 0) ) ||
PyObject_HasAttrString(obj, "__array_interface__") ||
PySequence_Check(obj) )
{
return 1;
}
PyErr_Clear();
return 0;
}
/* if python sequence type, convert to CvMat or CvMatND */
static CvArr * PyObject_to_CvArr (PyObject * obj, bool * freearg)
{
CvArr * cvarr = NULL;
*freearg = false;
if ( obj == Py_None )
{
// Interpret None as NULL pointer
return NULL;
}
else if( SWIG_IsOK( SWIG_ConvertPtr(obj, (void **)& cvarr, SWIGTYPE_p_void, 0) ) ||
SWIG_IsOK( SWIG_ConvertPtr (obj, (void** )& cvarr, SWIGTYPE_p_CvMat, 0) ) ||
SWIG_IsOK( SWIG_ConvertPtr (obj, (void **)& cvarr, SWIGTYPE_p_CvSeq, 0) ) ||
SWIG_IsOK( SWIG_ConvertPtr (obj, (void **)& cvarr, SWIGTYPE_p_CvContour, 0) ) ||
SWIG_IsOK( SWIG_ConvertPtr (obj, (void **)& cvarr, SWIGTYPE_p_CvSparseMat, 0) ) ||
SWIG_IsOK( SWIG_ConvertPtr (obj, (void **)& cvarr, SWIGTYPE_p_CvMatND, 0) ))
{
// we got a directly wrapped void * pointer, OpenCV array or sequence type
return cvarr;
}
else if (PyObject_HasAttrString (obj, "__array_interface__"))
{
// if we didn't get our own datatype, let's see if it supports the array protocol
// array protocol is great because we just have to create another header but can
// use the original data without copying
cvarr = PyArray_to_CvArr (obj);
*freearg = (cvarr != NULL);
}
else if (PySequence_Check (obj))
{
// our next bet is a tuple or list of tuples or lists this has to be copied over, however
cvarr = PySequence_to_CvArr (obj);
*freearg = (cvarr != NULL);
}
else if (PyLong_Check (obj) && PyLong_AsLong (obj) == 0)
{
// Interpret a '0' integer as a NULL pointer
* freearg = false;
return NULL;
}
else
{
// TODO, throw an error here
return NULL;
}
return cvarr;
}
static int PyObject_GetElemType(PyObject * 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(PyTuple_Check(obj) || PyList_Check(obj)) return CV_MAKE_TYPE(CV_32F, PySequence_Size( obj ));
if(PyLong_Check(obj)) return CV_32S;
return CV_32F;
}
%}