D:/opendownloadmanager/ODM-1.x/Include.Add/DShow/ddmm.cpp

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/*
  Free Download Manager Copyright (c) 2003-2007 FreeDownloadManager.ORG
  Open Download Manager Copyright (c) 2008-2010 OpenDownloadManager.ORG
*/                    

#include <streams.h>
#include <ddraw.h>
#include "ddmm.h"  

typedef struct {
        LPSTR   szDevice;
        GUID*   lpGUID;
        GUID    GUID;
        BOOL    fFound;
}   FindDeviceData;

BOOL CALLBACK FindDeviceCallback(GUID* lpGUID, LPSTR szName, LPSTR szDevice, LPVOID lParam)
{
        FindDeviceData *p = (FindDeviceData*)lParam;

        if (lstrcmpiA(p->szDevice, szDevice) == 0) {
            if (lpGUID) {
                p->GUID = *lpGUID;
                p->lpGUID = &p->GUID;
            } else {
                p->lpGUID = NULL;
            }
            p->fFound = TRUE;
            return FALSE;
        }
        return TRUE;
}  

BOOL CALLBACK FindDeviceCallbackEx(GUID* lpGUID, LPSTR szName, LPSTR szDevice, LPVOID lParam, HMONITOR hMonitor)
{
        FindDeviceData *p = (FindDeviceData*)lParam;

        if (lstrcmpiA(p->szDevice, szDevice) == 0) {
            if (lpGUID) {
                p->GUID = *lpGUID;
                p->lpGUID = &p->GUID;
            } else {
                p->lpGUID = NULL;
            }
            p->fFound = TRUE;
            return FALSE;
        }
        return TRUE;
}    

IDirectDraw * DirectDrawCreateFromDevice(LPSTR szDevice, PDRAWCREATE DirectDrawCreateP, PDRAWENUM DirectDrawEnumerateP)
{
        IDirectDraw*    pdd = NULL;
        FindDeviceData  find;

        if (szDevice == NULL) {
                DirectDrawCreateP(NULL, &pdd, NULL);
                return pdd;
        }

        find.szDevice = szDevice;
        find.fFound   = FALSE;
        DirectDrawEnumerateP(FindDeviceCallback, (LPVOID)&find);

        if (find.fFound)
        {
                
                UINT ErrorMode = SetErrorMode(SEM_FAILCRITICALERRORS);
                DirectDrawCreateP(find.lpGUID, &pdd, NULL);
                SetErrorMode(ErrorMode);
        }

        return pdd;
}    

IDirectDraw * DirectDrawCreateFromDeviceEx(LPSTR szDevice, PDRAWCREATE DirectDrawCreateP, LPDIRECTDRAWENUMERATEEXA DirectDrawEnumerateExP)
{
        IDirectDraw*    pdd = NULL;
        FindDeviceData  find;

        if (szDevice == NULL) {
                DirectDrawCreateP(NULL, &pdd, NULL);
                return pdd;
        }

        find.szDevice = szDevice;
        find.fFound   = FALSE;
        DirectDrawEnumerateExP(FindDeviceCallbackEx, (LPVOID)&find,
                                        DDENUM_ATTACHEDSECONDARYDEVICES);

        if (find.fFound)
        {
        
                UINT ErrorMode = SetErrorMode(SEM_FAILCRITICALERRORS);
                DirectDrawCreateP(find.lpGUID, &pdd, NULL);
                SetErrorMode(ErrorMode);
        }

        return pdd;
}

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