wxutil.h

用DirectX制作高级动画-[Advanced.Animation.with.DirectX]

public:
    CQueue(int n) {
        Initialize(n);
    }

    CQueue() {
        Initialize(DEFAULT_QUEUESIZE);
    }

    ~CQueue() {
        delete [] QueueObjects;
        DeleteCriticalSection(&CritSect);
        CloseHandle(hSemPut);
        CloseHandle(hSemGet);
    }

    T GetQueueObject() {
        int iSlot;
        T Object;
        LONG lPrevious;

        // Wait for someone to put something on our queue, returns straight
        // away is there is already an object on the queue.
        //
        WaitForSingleObject(hSemGet, INFINITE);

        EnterCriticalSection(&CritSect);
        iSlot = iNextGet++ % nMax;
        Object = QueueObjects[iSlot];
        LeaveCriticalSection(&CritSect);

        // Release anyone waiting to put an object onto our queue as there
        // is now space available in the queue.
        //
        ReleaseSemaphore(hSemPut, 1L, &lPrevious);
        return Object;
    }

    void PutQueueObject(T Object) {
        int iSlot;
        LONG lPrevious;

        // Wait for someone to get something from our queue, returns straight
        // away is there is already an empty slot on the queue.
        //
        WaitForSingleObject(hSemPut, INFINITE);

        EnterCriticalSection(&CritSect);
        iSlot = iNextPut++ % nMax;
        QueueObjects[iSlot] = Object;
        LeaveCriticalSection(&CritSect);

        // Release anyone waiting to remove an object from our queue as there
        // is now an object available to be removed.
        //
        ReleaseSemaphore(hSemGet, 1L, &lPrevious);
    }
};

// miscellaneous string conversion functions
// NOTE: as we need to use the same binaries on Win95 as on NT this code should
// be compiled WITHOUT unicode being defined.  Otherwise we will not pick up
// these internal routines and the binary will not run on Win95.

int WINAPIV wsprintfWInternal(LPWSTR, LPCWSTR, ...);

LPWSTR
WINAPI
lstrcpyWInternal(
    LPWSTR lpString1,
    LPCWSTR lpString2
    );
LPWSTR
WINAPI
lstrcpynWInternal(
    LPWSTR lpString1,
    LPCWSTR lpString2,
    int     iMaxLength
    );
int
WINAPI
lstrcmpWInternal(
    LPCWSTR lpString1,
    LPCWSTR lpString2
    );
int
WINAPI
lstrcmpiWInternal(
    LPCWSTR lpString1,
    LPCWSTR lpString2
    );
int
WINAPI
lstrlenWInternal(
    LPCWSTR lpString
    );

#ifndef UNICODE
#define wsprintfW wsprintfWInternal
#define lstrcpyW lstrcpyWInternal
#define lstrcpynW lstrcpynWInternal
#define lstrcmpW lstrcmpWInternal
#define lstrcmpiW lstrcmpiWInternal
#define lstrlenW lstrlenWInternal
#endif

extern "C"
void * __stdcall memmoveInternal(void *, const void *, size_t);

inline void * __cdecl memchrInternal(const void *buf, int chr, size_t cnt)
{
#ifdef _X86_
    void *pRet = NULL;

    _asm {
        cld                 // make sure we get the direction right
        mov     ecx, cnt    // num of bytes to scan
        mov     edi, buf    // pointer byte stream
        mov     eax, chr    // byte to scan for
        repne   scasb       // look for the byte in the byte stream
        jnz     exit_memchr // Z flag set if byte found
        dec     edi         // scasb always increments edi even when it
                            // finds the required byte
        mov     pRet, edi
exit_memchr:
    }
    return pRet;

#else
    while ( cnt && (*(unsigned char *)buf != (unsigned char)chr) ) {
        buf = (unsigned char *)buf + 1;
        cnt--;
    }

    return(cnt ? (void *)buf : NULL);
#endif
}

void WINAPI IntToWstr(int i, LPWSTR wstr);

#define WstrToInt(sz) _wtoi(sz)
#define atoiW(sz) _wtoi(sz)
#define atoiA(sz) atoi(sz)

// These are available to help managing bitmap VIDEOINFOHEADER media structures

extern const DWORD bits555[3];
extern const DWORD bits565[3];
extern const DWORD bits888[3];

// These help convert between VIDEOINFOHEADER and BITMAPINFO structures

STDAPI_(const GUID) GetTrueColorType(const BITMAPINFOHEADER *pbmiHeader);
STDAPI_(const GUID) GetBitmapSubtype(const BITMAPINFOHEADER *pbmiHeader);
STDAPI_(WORD) GetBitCount(const GUID *pSubtype);

// strmbase.lib implements this for compatibility with people who
// managed to link to this directly.  we don't want to advertise it.
//
// STDAPI_(/* T */ CHAR *) GetSubtypeName(const GUID *pSubtype);

STDAPI_(CHAR *) GetSubtypeNameA(const GUID *pSubtype);
STDAPI_(WCHAR *) GetSubtypeNameW(const GUID *pSubtype);

#ifdef UNICODE
#define GetSubtypeName GetSubtypeNameW
#else
#define GetSubtypeName GetSubtypeNameA
#endif

STDAPI_(LONG) GetBitmapFormatSize(const BITMAPINFOHEADER *pHeader);
STDAPI_(DWORD) GetBitmapSize(const BITMAPINFOHEADER *pHeader);
STDAPI_(BOOL) ContainsPalette(const VIDEOINFOHEADER *pVideoInfo);
STDAPI_(const RGBQUAD *) GetBitmapPalette(const VIDEOINFOHEADER *pVideoInfo);


// Compares two interfaces and returns TRUE if they are on the same object
BOOL WINAPI IsEqualObject(IUnknown *pFirst, IUnknown *pSecond);

// This is for comparing pins
#define EqualPins(pPin1, pPin2) IsEqualObject(pPin1, pPin2)


// Arithmetic helper functions

// Compute (a * b + rnd) / c
LONGLONG WINAPI llMulDiv(LONGLONG a, LONGLONG b, LONGLONG c, LONGLONG rnd);
LONGLONG WINAPI Int64x32Div32(LONGLONG a, LONG b, LONG c, LONG rnd);


// Avoids us dyna-linking to SysAllocString to copy BSTR strings
STDAPI WriteBSTR(BSTR * pstrDest, LPCWSTR szSrc);
STDAPI FreeBSTR(BSTR* pstr);

// Return a wide string - allocating memory for it
// Returns:
//    S_OK          - no error
//    E_POINTER     - ppszReturn == NULL
//    E_OUTOFMEMORY - can't allocate memory for returned string
STDAPI AMGetWideString(LPCWSTR pszString, LPWSTR *ppszReturn);

// Special wait for objects owning windows
DWORD WINAPI WaitDispatchingMessages(
    HANDLE hObject,
    DWORD dwWait,
    HWND hwnd = NULL,
    UINT uMsg = 0,
    HANDLE hEvent = NULL);

// HRESULT_FROM_WIN32 converts ERROR_SUCCESS to a success code, but in
// our use of HRESULT_FROM_WIN32, it typically means a function failed
// to call SetLastError(), and we still want a failure code.
//
#define AmHresultFromWin32(x) (MAKE_HRESULT(SEVERITY_ERROR, FACILITY_WIN32, x))

// call GetLastError and return an HRESULT value that will fail the
// SUCCEEDED() macro.
HRESULT AmGetLastErrorToHResult(void);

// duplicate of ATL's CComPtr to avoid linker conflicts.

IUnknown* QzAtlComPtrAssign(IUnknown** pp, IUnknown* lp);

template <class T>
class QzCComPtr
{
public:
	typedef T _PtrClass;
	QzCComPtr() {p=NULL;}
	QzCComPtr(T* lp)
	{
		if ((p = lp) != NULL)
			p->AddRef();
	}
	QzCComPtr(const QzCComPtr<T>& lp)
	{
		if ((p = lp.p) != NULL)
			p->AddRef();
	}
	~QzCComPtr() {if (p) p->Release();}
	void Release() {if (p) p->Release(); p=NULL;}
	operator T*() {return (T*)p;}
	T& operator*() {ASSERT(p!=NULL); return *p; }
	//The assert on operator& usually indicates a bug.  If this is really
	//what is needed, however, take the address of the p member explicitly.
	T** operator&() { ASSERT(p==NULL); return &p; }
	T* operator->() { ASSERT(p!=NULL); return p; }
	T* operator=(T* lp){return (T*)QzAtlComPtrAssign((IUnknown**)&p, lp);}
	T* operator=(const QzCComPtr<T>& lp)
	{
		return (T*)QzAtlComPtrAssign((IUnknown**)&p, lp.p);
	}
#if _MSC_VER>1020
	bool operator!(){return (p == NULL);}
#else
	BOOL operator!(){return (p == NULL) ? TRUE : FALSE;}
#endif
	T* p;
};

MMRESULT CompatibleTimeSetEvent( UINT uDelay, UINT uResolution, LPTIMECALLBACK lpTimeProc, DWORD_PTR dwUser, UINT fuEvent );
bool TimeKillSynchronousFlagAvailable( void );

#endif /* __WXUTIL__ */