dxutil.cpp

＜VC视频音频开发＞本程序在Windows 2000、Visual C++ 6.0、DirectX 9.0 环境下编译通过。

                                     int cchDestChar )
{
    if( strDestination==NULL || wstrSource==NULL || cchDestChar < 1 )
        return E_INVALIDARG;
    int nResult = WideCharToMultiByte( CP_ACP, 0, wstrSource, -1, strDestination, 
                                       cchDestChar*sizeof(CHAR), NULL, NULL );
    strDestination[cchDestChar-1] = 0;
    
    if( nResult == 0 )
        return E_FAIL;
    return S_OK;
}
HRESULT DXUtil_ConvertGenericStringToAnsiCch( CHAR* strDestination, const TCHAR* tstrSource, 
                                           int cchDestChar )
{
    if( strDestination==NULL || tstrSource==NULL || cchDestChar < 1 )
        return E_INVALIDARG;
#ifdef _UNICODE
    return DXUtil_ConvertWideStringToAnsiCch( strDestination, tstrSource, cchDestChar );
#else
    strncpy( strDestination, tstrSource, cchDestChar );
    strDestination[cchDestChar-1] = '\0';
    return S_OK;
#endif   
}
HRESULT DXUtil_ConvertGenericStringToWideCch( WCHAR* wstrDestination, const TCHAR* tstrSource, 
                                           int cchDestChar )
{
    if( wstrDestination==NULL || tstrSource==NULL || cchDestChar < 1 )
        return E_INVALIDARG;
#ifdef _UNICODE
    wcsncpy( wstrDestination, tstrSource, cchDestChar );
    wstrDestination[cchDestChar-1] = L'\0';
    return S_OK;
#else
    return DXUtil_ConvertAnsiStringToWideCch( wstrDestination, tstrSource, cchDestChar );
#endif    
}
HRESULT DXUtil_ConvertAnsiStringToGenericCch( TCHAR* tstrDestination, const CHAR* strSource, 
                                           int cchDestChar )
{
    if( tstrDestination==NULL || strSource==NULL || cchDestChar < 1 )
        return E_INVALIDARG;
        
#ifdef _UNICODE
    return DXUtil_ConvertAnsiStringToWideCch( tstrDestination, strSource, cchDestChar );
#else
    strncpy( tstrDestination, strSource, cchDestChar );
    tstrDestination[cchDestChar-1] = '\0';
    return S_OK;
#endif    
}
HRESULT DXUtil_ConvertWideStringToGenericCch( TCHAR* tstrDestination, const WCHAR* wstrSource, 
                                           int cchDestChar )
{
    if( tstrDestination==NULL || wstrSource==NULL || cchDestChar < 1 )
        return E_INVALIDARG;
#ifdef _UNICODE
    wcsncpy( tstrDestination, wstrSource, cchDestChar );
    tstrDestination[cchDestChar-1] = L'\0';    
    return S_OK;
#else
    return DXUtil_ConvertWideStringToAnsiCch( tstrDestination, wstrSource, cchDestChar );
#endif
}
VOID DXUtil_LaunchReadme( HWND hWnd, TCHAR* strLoc )
{
#ifdef UNDER_CE
    
    MessageBox( hWnd, TEXT("For operating instructions, please open the ")
                      TEXT("readme.txt file included with the project."),
                TEXT("DirectX SDK Sample"), MB_ICONWARNING | MB_OK );
    return;
#else 
    bool bSuccess = false;
    bool bFound = false;
    TCHAR strReadmePath[1024];
    TCHAR strExeName[MAX_PATH];
    TCHAR strExePath[MAX_PATH];
    TCHAR strSamplePath[MAX_PATH];
    TCHAR* strLastSlash = NULL;
    lstrcpy( strReadmePath, TEXT("") );
    lstrcpy( strExePath, TEXT("") );
    lstrcpy( strExeName, TEXT("") );
    lstrcpy( strSamplePath, TEXT("") );
    
    if( strLoc )
    {
        HKEY  hKey;
        LONG lResult = RegOpenKeyEx( HKEY_LOCAL_MACHINE,
                                    _T("Software\\Microsoft\\DirectX SDK"),
                                    0, KEY_READ, &hKey );
        if( ERROR_SUCCESS == lResult )
        {
            DWORD dwType;
            DWORD dwSize = MAX_PATH * sizeof(TCHAR);
            lResult = RegQueryValueEx( hKey, _T("DX9SDK Samples Path"), NULL,
                                      &dwType, (BYTE*)strSamplePath, &dwSize );
            strSamplePath[MAX_PATH-1] = 0; 
            
            if( ERROR_SUCCESS == lResult )
            {
                _sntprintf( strReadmePath, 1023, TEXT("%s\\C++\\%s\\readme.txt"), 
                            strSamplePath, strLoc );
                strReadmePath[1023] = 0;
                if( GetFileAttributes( strReadmePath ) != 0xFFFFFFFF )
                    bFound = TRUE;
            }
        }
        RegCloseKey( hKey );
    }
    
    GetModuleFileName( NULL, strExePath, MAX_PATH );
    strExePath[MAX_PATH-1]=0;
    strLastSlash = _tcsrchr( strExePath, TEXT('\\') );
    if( strLastSlash )
    {
        _tcsncpy( strExeName, &strLastSlash[1], MAX_PATH );
        strExeName[MAX_PATH-1]=0;
        
        *strLastSlash = 0;
        
        strLastSlash = _tcsrchr( strExeName, TEXT('.') );
        if( strLastSlash )
            *strLastSlash = 0;
    }
    if( !bFound )
    {
        
        _tcscpy( strReadmePath, strExePath );
        strLastSlash = _tcsrchr( strReadmePath, TEXT('\\') );
        if( strLastSlash )
            *strLastSlash = 0;
        lstrcat( strReadmePath, TEXT("\\") );
        lstrcat( strReadmePath, strExeName );
        lstrcat( strReadmePath, TEXT("\\readme.txt") );
        if( GetFileAttributes( strReadmePath ) != 0xFFFFFFFF )
            bFound = TRUE;
    }
    if( !bFound )
    {
        
        _tcscpy( strReadmePath, strExePath );
        lstrcat( strReadmePath, TEXT("\\readme.txt") );
        if( GetFileAttributes( strReadmePath ) != 0xFFFFFFFF )
            bFound = TRUE;
    }
    if( !bFound )
    {
        
        _tcscpy( strReadmePath, strExePath );
        strLastSlash = _tcsrchr( strReadmePath, TEXT('\\') );
        if( strLastSlash )
            *strLastSlash = 0;
        lstrcat( strReadmePath, TEXT("\\readme.txt") );
        if( GetFileAttributes( strReadmePath ) != 0xFFFFFFFF )
            bFound = TRUE;
    }
    if( !bFound )
    {
        
        _tcscpy( strReadmePath, strExePath );
        strLastSlash = _tcsrchr( strReadmePath, TEXT('\\') );
        if( strLastSlash )
            *strLastSlash = 0;
        strLastSlash = _tcsrchr( strReadmePath, TEXT('\\') );
        if( strLastSlash )
            *strLastSlash = 0;
        lstrcat( strReadmePath, TEXT("\\readme.txt") );
        if( GetFileAttributes( strReadmePath ) != 0xFFFFFFFF )
            bFound = TRUE;
    }
    if( bFound )
    {
        
        
        LPShellExecute pShellExecute = NULL;
        HINSTANCE hInstShell32 = LoadLibrary(TEXT("shell32.dll"));
        if (hInstShell32 != NULL)
        {
#ifdef UNICODE
            pShellExecute = (LPShellExecute)GetProcAddress(hInstShell32, _TWINCE("ShellExecuteW"));
#else
            pShellExecute = (LPShellExecute)GetProcAddress(hInstShell32, _TWINCE("ShellExecuteA"));
#endif
            if( pShellExecute != NULL )
            {
                if( pShellExecute( hWnd, TEXT("open"), strReadmePath, NULL, NULL, SW_SHOW ) > (HINSTANCE) 32 )
                    bSuccess = true;
            }
            FreeLibrary(hInstShell32);
        }
    }
    if( !bSuccess )
    {
        
        MessageBox( hWnd, TEXT("Could not find readme.txt"), 
                    TEXT("DirectX SDK Sample"), MB_ICONWARNING | MB_OK );
    }
#endif 
}
VOID DXUtil_Trace( TCHAR* strMsg, ... )
{
#if defined(DEBUG) | defined(_DEBUG)
    TCHAR strBuffer[512];
    
    va_list args;
    va_start(args, strMsg);
    _vsntprintf( strBuffer, 512, strMsg, args );
    va_end(args);
    OutputDebugString( strBuffer );
#else
    UNREFERENCED_PARAMETER(strMsg);
#endif
}
HRESULT DXUtil_ConvertStringToGUID( const TCHAR* strSrc, GUID* pGuidDest )
{
    UINT aiTmp[10];
    if( _stscanf( strSrc, TEXT("{%8X-%4X-%4X-%2X%2X-%2X%2X%2X%2X%2X%2X}"),
                    &pGuidDest->Data1, 
                    &aiTmp[0], &aiTmp[1], 
                    &aiTmp[2], &aiTmp[3],
                    &aiTmp[4], &aiTmp[5],
                    &aiTmp[6], &aiTmp[7],
                    &aiTmp[8], &aiTmp[9] ) != 11 )
    {
        ZeroMemory( pGuidDest, sizeof(GUID) );
        return E_FAIL;
    }
    else
    {
        pGuidDest->Data2       = (USHORT) aiTmp[0];
        pGuidDest->Data3       = (USHORT) aiTmp[1];
        pGuidDest->Data4[0]    = (BYTE) aiTmp[2];
        pGuidDest->Data4[1]    = (BYTE) aiTmp[3];
        pGuidDest->Data4[2]    = (BYTE) aiTmp[4];
        pGuidDest->Data4[3]    = (BYTE) aiTmp[5];
        pGuidDest->Data4[4]    = (BYTE) aiTmp[6];
        pGuidDest->Data4[5]    = (BYTE) aiTmp[7];
        pGuidDest->Data4[6]    = (BYTE) aiTmp[8];
        pGuidDest->Data4[7]    = (BYTE) aiTmp[9];
        return S_OK;
    }
}
HRESULT DXUtil_ConvertGUIDToStringCch( const GUID* pGuidSrc, TCHAR* strDest, int cchDestChar )
{
    int nResult = _sntprintf( strDest, cchDestChar, TEXT("{%0.8X-%0.4X-%0.4X-%0.2X%0.2X-%0.2X%0.2X%0.2X%0.2X%0.2X%0.2X}"),
               pGuidSrc->Data1, pGuidSrc->Data2, pGuidSrc->Data3,
               pGuidSrc->Data4[0], pGuidSrc->Data4[1],
               pGuidSrc->Data4[2], pGuidSrc->Data4[3],
               pGuidSrc->Data4[4], pGuidSrc->Data4[5],
               pGuidSrc->Data4[6], pGuidSrc->Data4[7] );
    if( nResult < 0 )
        return E_FAIL;
    return S_OK;
}
CArrayList::CArrayList( ArrayListType Type, UINT BytesPerEntry )
{
    if( Type == AL_REFERENCE )
        BytesPerEntry = sizeof(void*);
    m_ArrayListType = Type;
    m_pData = NULL;
    m_BytesPerEntry = BytesPerEntry;
    m_NumEntries = 0;
    m_NumEntriesAllocated = 0;
}
CArrayList::~CArrayList( void )
{
    if( m_pData != NULL )
        delete[] m_pData;
}
HRESULT CArrayList::Add( void* pEntry )
{
    if( m_BytesPerEntry == 0 )
        return E_FAIL;
    if( m_pData == NULL || m_NumEntries + 1 > m_NumEntriesAllocated )
    {
        void* pDataNew;
        UINT NumEntriesAllocatedNew;
        if( m_NumEntriesAllocated == 0 )
            NumEntriesAllocatedNew = 16;
        else
            NumEntriesAllocatedNew = m_NumEntriesAllocated * 2;
        pDataNew = new BYTE[NumEntriesAllocatedNew * m_BytesPerEntry];
        if( pDataNew == NULL )
            return E_OUTOFMEMORY;
        if( m_pData != NULL )
        {
            CopyMemory( pDataNew, m_pData, m_NumEntries * m_BytesPerEntry );
            delete[] m_pData;
        }
        m_pData = pDataNew;
        m_NumEntriesAllocated = NumEntriesAllocatedNew;
    }
    if( m_ArrayListType == AL_VALUE )
        CopyMemory( (BYTE*)m_pData + (m_NumEntries * m_BytesPerEntry), pEntry, m_BytesPerEntry );
    else
        *(((void**)m_pData) + m_NumEntries) = pEntry;
    m_NumEntries++;
    return S_OK;
}
void CArrayList::Remove( UINT Entry )
{
    
    m_NumEntries--;
    
    BYTE* pData = (BYTE*)m_pData + (Entry * m_BytesPerEntry);
    
    MoveMemory( pData, pData + m_BytesPerEntry, ( m_NumEntries - Entry ) * m_BytesPerEntry );
}
void* CArrayList::GetPtr( UINT Entry )
{
    if( m_ArrayListType == AL_VALUE )
        return (BYTE*)m_pData + (Entry * m_BytesPerEntry);
    else
        return *(((void**)m_pData) + Entry);
}
bool CArrayList::Contains( void* pEntryData )
{
    for( UINT iEntry = 0; iEntry < m_NumEntries; iEntry++ )
    {
        if( m_ArrayListType == AL_VALUE )
        {
            if( memcmp( GetPtr(iEntry), pEntryData, m_BytesPerEntry ) == 0 )
                return true;
        }
        else
        {
            if( GetPtr(iEntry) == pEntryData )
                return true;
        }
    }
    return false;
}
HRESULT DXUtil_ConvertAnsiStringToWideCb( WCHAR* wstrDestination, const CHAR* strSource, int cbDestChar )
{
    return DXUtil_ConvertAnsiStringToWideCch( wstrDestination, strSource, cbDestChar / sizeof(WCHAR) );
}
HRESULT DXUtil_ConvertWideStringToAnsiCb( CHAR* strDestination, const WCHAR* wstrSource, int cbDestChar )
{
    return DXUtil_ConvertWideStringToAnsiCch( strDestination, wstrSource, cbDestChar / sizeof(CHAR) );
}
HRESULT DXUtil_ConvertGenericStringToAnsiCb( CHAR* strDestination, const TCHAR* tstrSource, int cbDestChar )
{
    return DXUtil_ConvertGenericStringToAnsiCch( strDestination, tstrSource, cbDestChar / sizeof(CHAR) );
}
HRESULT DXUtil_ConvertGenericStringToWideCb( WCHAR* wstrDestination, const TCHAR* tstrSource, int cbDestChar )
{
    return DXUtil_ConvertGenericStringToWideCch( wstrDestination, tstrSource, cbDestChar / sizeof(WCHAR) );
}
HRESULT DXUtil_ConvertAnsiStringToGenericCb( TCHAR* tstrDestination, const CHAR* strSource, int cbDestChar )
{
    return DXUtil_ConvertAnsiStringToGenericCch( tstrDestination, strSource, cbDestChar / sizeof(TCHAR) );
}
HRESULT DXUtil_ConvertWideStringToGenericCb( TCHAR* tstrDestination, const WCHAR* wstrSource, int cbDestChar )
{
    return DXUtil_ConvertWideStringToGenericCch( tstrDestination, wstrSource, cbDestChar / sizeof(TCHAR) );
}
HRESULT DXUtil_ReadStringRegKeyCb( HKEY hKey, TCHAR* strRegName, TCHAR* strDest, DWORD cbDest, TCHAR* strDefault )
{
    return DXUtil_ReadStringRegKeyCch( hKey, strRegName, strDest, cbDest / sizeof(TCHAR), strDefault );
}
HRESULT DXUtil_ConvertGUIDToStringCb( const GUID* pGuidSrc, TCHAR* strDest, int cbDestChar )
{
    return DXUtil_ConvertGUIDToStringCch( pGuidSrc, strDest, cbDestChar / sizeof(TCHAR) );
}
#ifndef UNDER_CE
HRESULT DXUtil_GetDXSDKMediaPathCb( TCHAR* szDest, int cbDest )
{
    return DXUtil_GetDXSDKMediaPathCch( szDest, cbDest / sizeof(TCHAR) );
}
HRESULT DXUtil_FindMediaFileCb( TCHAR* szDestPath, int cbDest, TCHAR* strFilename )
{
    return DXUtil_FindMediaFileCch( szDestPath, cbDest / sizeof(TCHAR), strFilename );
}
#endif