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Posted to commits@mxnet.apache.org by GitBox <gi...@apache.org> on 2019/03/11 03:11:21 UTC
[GitHub] [incubator-mxnet] dbsxdbsx edited a comment on issue #14385: OpenCV
4.0 is currently not support on win10
dbsxdbsx edited a comment on issue #14385: OpenCV 4.0 is currently not support on win10
URL: https://github.com/apache/incubator-mxnet/issues/14385#issuecomment-471390025
@wkcn，for context of error message, not feasible at present, I would try to rebuilt it and get it soon.
for code in OPENCV4.0:
```
// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html.
#ifndef OPENCV_CORE_CVSTD_WRAPPER_HPP
#define OPENCV_CORE_CVSTD_WRAPPER_HPP
#include "opencv2/core/cvdef.h"
#include <string>
#include <memory> // std::shared_ptr
#include <type_traits> // std::enable_if
namespace cv {
using std::nullptr_t;
//! @addtogroup core_basic
//! @{
#ifdef CV_DOXYGEN
template <typename _Tp> using Ptr = std::shared_ptr<_Tp>; // In ideal world it should look like this, but we need some compatibility workarounds below
template<typename _Tp, typename ... A1> static inline
Ptr<_Tp> makePtr(const A1&... a1) { return std::make_shared<_Tp>(a1...); }
#else // cv::Ptr with compatibility workarounds
// It should be defined for C-API types only.
// C++ types should use regular "delete" operator.
template<typename Y> struct DefaultDeleter;
#if 0
{
void operator()(Y* p) const;
};
#endif
namespace sfinae {
template<typename C, typename Ret, typename... Args>
struct has_parenthesis_operator
{
private:
template<typename T>
static CV_CONSTEXPR std::true_type check(typename std::is_same<typename std::decay<decltype(std::declval<T>().operator()(std::declval<Args>()...))>::type, Ret>::type*);
template<typename> static CV_CONSTEXPR std::false_type check(...);
typedef decltype(check<C>(0)) type;
public:
static CV_CONSTEXPR bool value = type::value;
};
} // namespace sfinae
template <typename T, typename = void>
struct has_custom_delete
: public std::false_type {};
template <typename T>
struct has_custom_delete<T, typename std::enable_if< sfinae::has_parenthesis_operator<DefaultDeleter<T>, void, T*>::value >::type >
: public std::true_type {};
template<typename T>
struct Ptr : public std::shared_ptr<T>
{
#if 0
using std::shared_ptr<T>::shared_ptr; // GCC 5.x can't handle this
#else
inline Ptr() CV_NOEXCEPT : std::shared_ptr<T>() {}
inline Ptr(nullptr_t) CV_NOEXCEPT : std::shared_ptr<T>(nullptr) {}
template<typename Y, typename D> inline Ptr(Y* p, D d) : std::shared_ptr<T>(p, d) {}
template<typename D> inline Ptr(nullptr_t, D d) : std::shared_ptr<T>(nullptr, d) {}
template<typename Y> inline Ptr(const Ptr<Y>& r, T* ptr) CV_NOEXCEPT : std::shared_ptr<T>(r, ptr) {}
inline Ptr(const Ptr<T>& o) CV_NOEXCEPT : std::shared_ptr<T>(o) {}
inline Ptr(Ptr<T>&& o) CV_NOEXCEPT : std::shared_ptr<T>(std::move(o)) {}
template<typename Y> inline Ptr(const Ptr<Y>& o) CV_NOEXCEPT : std::shared_ptr<T>(o) {}
template<typename Y> inline Ptr(Ptr<Y>&& o) CV_NOEXCEPT : std::shared_ptr<T>(std::move(o)) {}
#endif
inline Ptr(const std::shared_ptr<T>& o) CV_NOEXCEPT : std::shared_ptr<T>(o) {}
inline Ptr(std::shared_ptr<T>&& o) CV_NOEXCEPT : std::shared_ptr<T>(std::move(o)) {}
// Overload with custom DefaultDeleter: Ptr<IplImage>(...)
template<typename Y>
inline Ptr(const std::true_type&, Y* ptr) : std::shared_ptr<T>(ptr, DefaultDeleter<Y>()) {}
// Overload without custom deleter: Ptr<std::string>(...);
template<typename Y>
inline Ptr(const std::false_type&, Y* ptr) : std::shared_ptr<T>(ptr) {}
template<typename Y = T>
inline Ptr(Y* ptr) : Ptr(has_custom_delete<Y>(), ptr) {}
// Overload with custom DefaultDeleter: Ptr<IplImage>(...)
template<typename Y>
inline void reset(const std::true_type&, Y* ptr) { std::shared_ptr<T>::reset(ptr, DefaultDeleter<Y>()); }
// Overload without custom deleter: Ptr<std::string>(...);
template<typename Y>
inline void reset(const std::false_type&, Y* ptr) { std::shared_ptr<T>::reset(ptr); }
template<typename Y>
inline void reset(Y* ptr) { Ptr<T>::reset(has_custom_delete<Y>(), ptr); }
template<class Y, class Deleter>
void reset(Y* ptr, Deleter d) { std::shared_ptr<T>::reset(ptr, d); }
void reset() CV_NOEXCEPT { std::shared_ptr<T>::reset(); }
Ptr& operator=(const Ptr& o) { std::shared_ptr<T>::operator =(o); return *this; }
template<typename Y> inline Ptr& operator=(const Ptr<Y>& o) { std::shared_ptr<T>::operator =(o); return *this; }
T* operator->() const CV_NOEXCEPT { return std::shared_ptr<T>::get();}
typename std::add_lvalue_reference<T>::type operator*() const CV_NOEXCEPT { return *std::shared_ptr<T>::get(); }
// OpenCV 3.x methods (not a part of standart C++ library)
inline void release() { std::shared_ptr<T>::reset(); }
inline operator T* () const { return std::shared_ptr<T>::get(); }
inline bool empty() const { return std::shared_ptr<T>::get() == nullptr; }
template<typename Y> inline
Ptr<Y> staticCast() const CV_NOEXCEPT { return std::static_pointer_cast<Y>(*this); }
template<typename Y> inline
Ptr<Y> constCast() const CV_NOEXCEPT { return std::const_pointer_cast<Y>(*this); }
template<typename Y> inline
Ptr<Y> dynamicCast() const CV_NOEXCEPT { return std::dynamic_pointer_cast<Y>(*this); }
};
template<typename _Tp, typename ... A1> static inline
Ptr<_Tp> makePtr(const A1&... a1)
{
static_assert( !has_custom_delete<_Tp>::value, "Can't use this makePtr with custom DefaultDeleter");
return (Ptr<_Tp>)std::make_shared<_Tp>(a1...);
}
#endif // CV_DOXYGEN
//! @} core_basic
} // cv
#endif //OPENCV_CORE_CVSTD_WRAPPER_HPP
```
the code at line 45 is
```
static CV_CONSTEXPR std::true_type check(typename std::is_same<typename std::decay<decltype(std::declval<T>().operator()(std::declval<Args>()...))>::type, Ret>::type*);
```
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