pcsx2/common/include/comptr.h

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#pragma once
#ifndef ASSERT
#ifdef _DEBUG
#include <assert.h>
#define ASSERT assert
#else
#define ASSERT(exp) ((void)0)
#endif
#endif
inline IUnknown* AtlComPtrAssign(IUnknown** pp, IUnknown* lp)
{
if(pp == NULL) return NULL;
if(lp != NULL) lp->AddRef();
if(*pp) (*pp)->Release();
*pp = lp;
return lp;
}
inline IUnknown* AtlComQIPtrAssign(IUnknown** pp, IUnknown* lp, REFIID riid)
{
if(pp == NULL) return NULL;
IUnknown* pTemp = *pp;
if(lp == NULL || FAILED(lp->QueryInterface(riid, (void**)pp))) *pp = NULL;
if(pTemp) pTemp->Release();
return *pp;
}
template<class T> class _NoAddRefReleaseOnCComPtr : public T
{
private:
STDMETHOD_(ULONG, AddRef)() = 0;
STDMETHOD_(ULONG, Release)() = 0;
};
template<class T> class CComPtrBase
{
protected:
CComPtrBase() throw()
{
p = NULL;
}
CComPtrBase(T* lp) throw()
{
p = lp;
if(p != NULL) p->AddRef();
}
void Swap(CComPtrBase& other)
{
T* pTemp = p;
p = other.p;
other.p = pTemp;
}
public:
typedef T _PtrClass;
~CComPtrBase() throw()
{
if(p) p->Release();
}
operator T*() const throw()
{
return p;
}
T& operator*() const
{
ASSERT(p != NULL);
return *p;
}
T** operator&() throw()
{
ASSERT(p == NULL);
return &p;
}
_NoAddRefReleaseOnCComPtr<T>* operator->() const throw()
{
ASSERT(p != NULL);
return (_NoAddRefReleaseOnCComPtr<T>*)p;
}
bool operator!() const throw()
{
return p == NULL;
}
bool operator < (T* pT) const throw()
{
return p < pT;
}
bool operator != (T* pT) const
{
return !operator==(pT);
}
bool operator == (T* pT) const throw()
{
return p == pT;
}
void Release() throw()
{
T* pTemp = p;
if(pTemp)
{
p = NULL;
pTemp->Release();
}
}
bool IsEqualObject(IUnknown* pOther) throw()
{
if(p == NULL && pOther == NULL) return true;
if(p == NULL || pOther == NULL) return false;
CComPtr<IUnknown> punk1;
CComPtr<IUnknown> punk2;
p->QueryInterface(__uuidof(IUnknown), (void**)&punk1);
pOther->QueryInterface(__uuidof(IUnknown), (void**)&punk2);
return punk1 == punk2;
}
void Attach(T* p2) throw()
{
if(p)
{
ULONG ref = p->Release();
(ref);
ASSERT(ref != 0 || p2 != p);
}
p = p2;
}
T* Detach() throw()
{
T* pt = p;
p = NULL;
return pt;
}
HRESULT CopyTo(T** ppT) throw()
{
ASSERT(ppT != NULL);
if(ppT == NULL) return E_POINTER;
*ppT = p;
if(p) p->AddRef();
return S_OK;
}
HRESULT CoCreateInstance(REFCLSID rclsid, LPUNKNOWN pUnkOuter = NULL, DWORD dwClsContext = CLSCTX_ALL) throw()
{
ASSERT(p == NULL);
return ::CoCreateInstance(rclsid, pUnkOuter, dwClsContext, __uuidof(T), (void**)&p);
}
template<class Q> HRESULT QueryInterface(Q** pp) const throw()
{
ASSERT(pp != NULL);
return p->QueryInterface(__uuidof(Q), (void**)pp);
}
T* p;
};
template <class T> class CComPtr : public CComPtrBase<T>
{
public:
CComPtr() throw()
{
}
CComPtr(T* lp) throw() : CComPtrBase<T>(lp)
{
}
CComPtr(const CComPtr<T>& lp) throw() : CComPtrBase<T>(lp.p)
{
}
T* operator = (T* lp) throw()
{
if(*this != lp)
{
CComPtr(lp).Swap(*this);
}
return *this;
}
template<typename Q> T* operator = (const CComPtr<Q>& lp) throw()
{
if(!IsEqualObject(lp))
{
return static_cast<T*>(AtlComQIPtrAssign((IUnknown**)&p, lp, __uuidof(T)));
}
return *this;
}
T* operator = (const CComPtr<T>& lp) throw()
{
if(*this != lp)
{
CComPtr(lp).Swap(*this);
}
return *this;
}
CComPtr(CComPtr<T>&& lp) throw() : CComPtrBase<T>()
{
lp.Swap(*this);
}
T* operator = (CComPtr<T>&& lp) throw()
{
if(*this != lp)
{
CComPtr(static_cast<CComPtr&&>(lp)).Swap(*this);
}
return *this;
}
};
template<> class CComPtr<IDispatch> : public CComPtrBase<IDispatch>
{
public:
CComPtr() throw()
{
}
CComPtr(IDispatch* lp) throw() : CComPtrBase<IDispatch>(lp)
{
}
CComPtr(const CComPtr<IDispatch>& lp) throw() : CComPtrBase<IDispatch>(lp.p)
{
}
IDispatch* operator = (IDispatch* lp) throw()
{
if(*this != lp)
{
CComPtr(lp).Swap(*this);
}
return *this;
}
IDispatch* operator = (const CComPtr<IDispatch>& lp) throw()
{
if(*this != lp)
{
CComPtr(lp).Swap(*this);
}
return *this;
}
CComPtr(CComPtr<IDispatch>&& lp) throw() : CComPtrBase<IDispatch>()
{
p = lp.p;
lp.p = NULL;
}
IDispatch* operator = (CComPtr<IDispatch>&& lp) throw()
{
CComPtr(static_cast<CComPtr&&>(lp)).Swap(*this);
return *this;
}
};
template<class T, const IID* piid = &__uuidof(T)> class CComQIPtr : public CComPtr<T>
{
public:
CComQIPtr() throw()
{
}
/*
CComQIPtr(decltype(__nullptr)) throw()
{
}
*/
CComQIPtr(_Inout_opt_ T* lp) throw() : CComPtr<T>(lp)
{
}
CComQIPtr(_Inout_ const CComQIPtr<T,piid>& lp) throw() : CComPtr<T>(lp.p)
{
}
CComQIPtr(_Inout_opt_ IUnknown* lp) throw()
{
if(lp != NULL)
{
if(FAILED(lp->QueryInterface(*piid, (void **)&p)))
{
p = NULL;
}
}
}
/*
T* operator=(decltype(__nullptr)) throw()
{
CComQIPtr(nullptr).Swap(*this);
return nullptr;
}
*/
T* operator = (T* lp) throw()
{
if(*this != lp)
{
CComQIPtr(lp).Swap(*this);
}
return *this;
}
T* operator = (const CComQIPtr<T, piid>& lp) throw()
{
if(*this != lp)
{
CComQIPtr(lp).Swap(*this);
}
return *this;
}
T* operator = (IUnknown* lp) throw()
{
if(*this != lp)
{
return static_cast<T*>(AtlComQIPtrAssign((IUnknown**)&p, lp, *piid));
}
return *this;
}
};
template<> class CComQIPtr<IUnknown, &IID_IUnknown> : public CComPtr<IUnknown>
{
public:
CComQIPtr() throw()
{
}
CComQIPtr(IUnknown* lp) throw()
{
if(lp != NULL)
{
if(FAILED(lp->QueryInterface(__uuidof(IUnknown), (void **)&p)))
{
p = NULL;
}
}
}
CComQIPtr(const CComQIPtr<IUnknown,&IID_IUnknown>& lp) throw() : CComPtr<IUnknown>(lp.p)
{
}
IUnknown* operator = (IUnknown* lp) throw()
{
if(*this != lp)
{
return AtlComQIPtrAssign((IUnknown**)&p, lp, __uuidof(IUnknown));
}
return *this;
}
IUnknown* operator = (const CComQIPtr<IUnknown,&IID_IUnknown>& lp) throw()
{
if(*this != lp)
{
CComQIPtr(lp).Swap(*this);
}
return *this;
}
};