Implement proper void pointer (void*) support

This change introduces a new type into the shiboken2 module which is
imported by calling "import PySide2.support.VoidPtr".

The type takes care of conversions from / to void* values in function
signatures.

Creating an instance can be done by passing either a shiboken wrapped
object, or an integer representing an address, or a python object that
implements the buffer interface.

For example, this is useful for passing numpy arrays to C OpenGL
functions that take void* parameters. First you convert the array into
a bytestring (using numpy.array.tobytes(), then you instantiate a
VoidPtr from that bytestring, and finally you pass it along to a GL
function.

One corner case that is currently not supported is void** parameters.

Change-Id: I01e291d6856cb6bd8b5175adc3ead6b728036535
Reviewed-by: Christian Tismer <tismer@stackless.com>

1 files changed, 0 insertions, 25 deletions

diff --git a/sources/shiboken2/libshiboken/sbkconverter_p.h b/sources/shiboken2/libshiboken/sbkconverter_p.h
index 7efccbab4..110358273 100644
--- a/sources/shiboken2/libshiboken/sbkconverter_p.h
+++ b/sources/shiboken2/libshiboken/sbkconverter_p.h
@@ -533,29 +533,4 @@ struct Primitive<std::string> : TwoPrimitive<std::string>
     }
 };
 
-// Void pointer ----------------------------------------------------------------------------
-
-template <>
-struct Primitive<void*> : OnePrimitive<void*>
-{
-    static PyObject* toPython(const void* cppIn)
-    {
-        SbkDbg() << cppIn;
-        if (!cppIn)
-            Py_RETURN_NONE;
-        PyObject *result = reinterpret_cast<PyObject *>(const_cast<void *>(cppIn));
-        Py_INCREF(result);
-        return result;
-    }
-    static void toCpp(PyObject* pyIn, void* cppOut)
-    {
-        SbkDbg() << pyIn;
-        *reinterpret_cast<void **>(cppOut) = pyIn;
-    }
-    static PythonToCppFunc isConvertible(PyObject *)
-    {
-        return toCpp;
-    }
-};
-
 #endif // SBK_CONVERTER_P_H