[Swig-user] (Noob) Help with int64_t and java

[Robert Baruch]

So I'm trying to make some elementary Java bindings on OSX for OpenCV (http://opencv.willowgarage.com/wiki/). Having never used SWIG before, I'm just trying to access some of the global functions in core. Here are the relevant sections from the header files:

==== opencv2/core/core.hpp ====

...

#include "opencv2/core/types_c.h"

...

namespace cv {

...

CV_EXPORTS_W int64 getTickCount();

...

}

===========================

==== opencv2/core/types_c.h ====

...

#if !defined _MSC_VER && !defined __BORLANDC__

  #include <stdint.h>

#endif

...

#define CV_EXPORTS_W CV_EXPORTS

...

#if (defined WIN32 || defined _WIN32 || defined WINCE) && defined CVAPI_EXPORTS

    #define CV_EXPORTS __declspec(dllexport)

#else

    #define CV_EXPORTS

#endif

...

#if defined _MSC_VER || defined __BORLANDC__

typedef __int64 int64;

typedef unsigned __int64 uint64;

#define CV_BIG_INT(n)   n##I64

#define CV_BIG_UINT(n)  n##UI64

#else

typedef int64_t int64;

typedef uint64_t uint64;

#define CV_BIG_INT(n)   n##LL

#define CV_BIG_UINT(n)  n##ULL

#endif

============================

So, because I'm not on Windows, CV_EXPORTS_W should be nothing, and int64 should be int64_t, which is defined in stdint.h.

Here's my interface file:

==== opencv.i ====

%module OpencvCoreGlobal

%{

#include "opencv2/core/core.hpp"

%}

namespace cv {

extern int64 getTickCount();

}

================

The problem that I'm having is that SWIG appears to treat int64 as an opaque type rather than a Java long. What am I doing wrong?

===== Command line =====

$ swig -verbose -I/usr/local/include -java -c++ opencv.i

LangSubDir: java

Search paths:

   ./

   /usr/local/include/

   ./swig_lib/java/

   /usr/share/swig/1.3.31/java/

   ./swig_lib/

   /usr/share/swig/1.3.31/

Preprocessing...

Starting language-specific parse...

Processing types...

C++ analysis...

Generating wrappers...

$

================

======= OpencvCoreGlobal.java =======

public class OpencvCoreGlobal {

  public static SWIGTYPE_p_int64 getTickCount() {

    return new SWIGTYPE_p_int64(OpencvCoreGlobalJNI.getTickCount(), true);

  }

}

==================================

====== OpencvCoreGlobalJNI.java ======

class OpencvCoreGlobalJNI {

  public final static native long getTickCount();

}

==================================

====== SWIGTYPE_p_int64.java ========

public class SWIGTYPE_p_int64 {

  private long swigCPtr;

  protected SWIGTYPE_p_int64(long cPtr, boolean futureUse) {

    swigCPtr = cPtr;

  }

  protected SWIGTYPE_p_int64() {

    swigCPtr = 0;

  }

  protected static long getCPtr(SWIGTYPE_p_int64 obj) {

    return (obj == null) ? 0 : obj.swigCPtr;

  }

}

=================================

Thanks,

--Rob

[William S Fulton]

Try %include stdint.i.

William

------------------------------------------------------------------------------
This SF email is sponsosred by:
Try Windows Azure free for 90 days Click Here
http://p.sf.net/sfu/sfd2d-msazure
_______________________________________________
Swig-user mailing list
Swig...@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/swig-user

[Mathieu Malaterre]

On Thu, Mar 15, 2012 at 10:28 PM, William S Fulton
<w...@fultondesigns.co.uk> wrote:

As william said. One more note, the following is simpy wrong:

>> #if !defined _MSC_VER && !defined __BORLANDC__

VS2010 comes with a stdint.h header file

2cts
--
Mathieu