642 lines
19 KiB
C++
642 lines
19 KiB
C++
/*==========================================================================
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*
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* Copyright (C) 1999-2000 Microsoft Corporation. All Rights Reserved.
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*
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* File: enum.cpp
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* Content Handles all of the file caching of device caps.
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*
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*
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***************************************************************************/
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#include "ddrawpr.h"
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#include <stdio.h>
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#include "d3dobj.hpp"
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#include "enum.hpp"
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#include "d3di.hpp"
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#include "shlobj.h"
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#define DXCACHEFILENAME "\\d3d8caps.dat"
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#define DXTEMPFILENAME "\\d3d8caps.tmp"
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typedef struct _FDEVICEHEADER
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{
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DWORD VendorId;
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DWORD DeviceId;
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DWORD SubSysId;
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DWORD Revision;
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DWORD FileOffset;
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DWORD Size;
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} FDEVICEHEADER;
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HANDLE OpenCacheFile(DWORD dwDesiredAccess, DWORD dwCreationDisposition, char * pName, char * pPath)
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{
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char FName[MAX_PATH + 16];
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GetSystemDirectory(FName, MAX_PATH);
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lstrcat(FName, pName);
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HANDLE h = CreateFile( FName,
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dwDesiredAccess,
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FILE_SHARE_READ,
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NULL,
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dwCreationDisposition,
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FILE_ATTRIBUTE_NORMAL,
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NULL);
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#ifdef WINNT
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if (INVALID_HANDLE_VALUE == h)
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{
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HMODULE hShlwapi=0;
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typedef HRESULT (WINAPI * PSHGETSPECIALFOLDERPATH) (HWND, LPTSTR, int, BOOL);
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PSHGETSPECIALFOLDERPATH pSHGetSpecialFolderPath=0;
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hShlwapi = LoadLibrary("SHELL32.DLL");
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if (hShlwapi)
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{
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pSHGetSpecialFolderPath = (PSHGETSPECIALFOLDERPATH) GetProcAddress(hShlwapi,"SHGetSpecialFolderPathA");
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if(pSHGetSpecialFolderPath)
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{
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HRESULT hr = pSHGetSpecialFolderPath(
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NULL,
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FName,
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CSIDL_LOCAL_APPDATA, // <user name>\Local Settings\Applicaiton Data (non roaming)
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TRUE);
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if (SUCCEEDED(hr))
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{
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lstrcat(FName, pName);
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h = CreateFile( FName,
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dwDesiredAccess,
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FILE_SHARE_READ,
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NULL,
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dwCreationDisposition,
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FILE_ATTRIBUTE_NORMAL,
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NULL);
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}
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}
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FreeLibrary(hShlwapi);
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}
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}
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#endif
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if (pPath)
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{
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lstrcpy(pPath, FName);
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}
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return h;
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}
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void ReadFromCache(D3DADAPTER_IDENTIFIER8* pDI,
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UINT* pCapsSize,
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BYTE** ppCaps)
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{
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HANDLE h;
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DWORD HeaderSize;
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DWORD NumRead;
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FDEVICEHEADER* pHeaderInfo = NULL;
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DWORD i;
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// Get the data for the device that we're looking for
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*pCapsSize = 0;
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*ppCaps = NULL;
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// Open the file and look for the device entry
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h = OpenCacheFile (GENERIC_READ, OPEN_EXISTING, DXCACHEFILENAME, NULL);
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if (h == INVALID_HANDLE_VALUE)
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{
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return;
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}
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ReadFile( h, &HeaderSize, sizeof(DWORD), &NumRead, NULL);
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if (NumRead < sizeof(DWORD))
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{
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goto FileError;
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}
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pHeaderInfo = (FDEVICEHEADER*) MemAlloc(HeaderSize);
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if (pHeaderInfo == NULL)
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{
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goto FileError;
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}
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ReadFile( h, pHeaderInfo, HeaderSize, &NumRead, NULL);
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if (NumRead < HeaderSize)
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{
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goto FileError;
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}
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for (i = 0; i < HeaderSize / sizeof(FDEVICEHEADER); i++)
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{
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if ((pHeaderInfo[i].VendorId == pDI->VendorId) &&
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(pHeaderInfo[i].DeviceId == pDI->DeviceId) &&
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(pHeaderInfo[i].SubSysId == pDI->SubSysId) &&
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(pHeaderInfo[i].Revision == pDI->Revision))
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{
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break;
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}
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}
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if (i < HeaderSize / sizeof(FDEVICEHEADER))
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{
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// We have info for the device - now we read it
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if (SetFilePointer (h, pHeaderInfo[i].FileOffset, NULL, FILE_BEGIN) !=
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pHeaderInfo[i].FileOffset)
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{
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goto FileError;
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}
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*ppCaps = (BYTE*) MemAlloc(pHeaderInfo[i].Size);
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if (*ppCaps == NULL)
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{
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goto FileError;
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}
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ReadFile( h, *ppCaps, pHeaderInfo[i].Size, &NumRead, NULL);
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if (NumRead < pHeaderInfo[i].Size)
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{
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MemFree(*ppCaps);
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*ppCaps = NULL;
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goto FileError;
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}
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// If we got this far, then everything worked
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*pCapsSize = pHeaderInfo[i].Size;
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}
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FileError:
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if (pHeaderInfo != NULL)
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{
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MemFree(pHeaderInfo);
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}
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CloseHandle(h);
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}
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void WriteToCache(D3DADAPTER_IDENTIFIER8* pDI,
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UINT CapsSize,
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BYTE* pCaps)
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{
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char FName[MAX_PATH + 16];
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char NewFName[MAX_PATH + 16];
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BOOL bNewFile = FALSE;
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HANDLE hOld;
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HANDLE hNew;
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DWORD NewHeaderSize;
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DWORD OldHeaderSize;
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DWORD NumWritten;
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DWORD NumRead;
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FDEVICEHEADER* pOldHeaderInfo = NULL;
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FDEVICEHEADER* pNewHeaderInfo = NULL;
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DWORD dwOffset;
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DWORD i;
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DWORD NewEntries;
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DWORD NextEntry;
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DWORD Biggest;
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BYTE* pBuffer = NULL;
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// Does the file already exist, or do we need to create a new one?
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hOld = OpenCacheFile (GENERIC_READ, OPEN_EXISTING, DXCACHEFILENAME, FName);
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if (hOld == INVALID_HANDLE_VALUE)
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{
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bNewFile = TRUE;
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}
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else
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{
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// We don't want this file to get over 65K. If writing this entry
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// will cause the file size to exceed that, then we will delete all
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// of the existing data and start from scratch.
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DWORD dwLow;
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DWORD dwHigh;
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dwLow = GetFileSize (hOld, &dwHigh);
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if ((dwHigh != 0) || ((sizeof(DWORD) - dwLow) < CapsSize))
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{
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CloseHandle(hOld);
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bNewFile = TRUE;
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}
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}
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if (bNewFile)
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{
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// We are creating a new file, which is pretty easy
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hNew = OpenCacheFile (GENERIC_WRITE, CREATE_ALWAYS, DXCACHEFILENAME, NewFName);
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if (hNew != INVALID_HANDLE_VALUE)
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{
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NewHeaderSize = sizeof (FDEVICEHEADER);
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WriteFile (hNew, &NewHeaderSize, sizeof(NewHeaderSize), &NumWritten, NULL);
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if (NumWritten == sizeof(NewHeaderSize))
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{
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FDEVICEHEADER DevHeader;
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DevHeader.VendorId = pDI->VendorId;
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DevHeader.DeviceId = pDI->DeviceId;
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DevHeader.SubSysId = pDI->SubSysId;
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DevHeader.Revision = pDI->Revision;
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DevHeader.FileOffset = sizeof(FDEVICEHEADER) + sizeof(DWORD);
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DevHeader.Size = CapsSize;
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WriteFile (hNew, &DevHeader, sizeof(DevHeader), &NumWritten, NULL);
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if (NumWritten == sizeof(DevHeader))
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{
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WriteFile (hNew, pCaps, CapsSize, &NumWritten, NULL);
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}
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}
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CloseHandle(hNew);
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}
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}
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else
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{
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// The file already exists, so we will create a new file and copy all of the contents
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// from the existing file over.
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hNew = OpenCacheFile (GENERIC_WRITE, CREATE_ALWAYS, DXTEMPFILENAME, NewFName);
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if (hNew == INVALID_HANDLE_VALUE)
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{
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goto FileError;
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}
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ReadFile (hOld, &OldHeaderSize, sizeof(DWORD), &NumRead, NULL);
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if (NumRead < sizeof(DWORD))
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{
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goto FileError;
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}
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pOldHeaderInfo = (FDEVICEHEADER*) MemAlloc(OldHeaderSize);
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if (pOldHeaderInfo == NULL)
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{
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goto FileError;
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}
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ReadFile (hOld, pOldHeaderInfo, OldHeaderSize, &NumRead, NULL);
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if (NumRead < OldHeaderSize)
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{
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goto FileError;
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}
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// How many entries will exist in the new header?
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NewEntries = 1;
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for (i = 0; i < OldHeaderSize / sizeof (FDEVICEHEADER); i++)
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{
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if ((pOldHeaderInfo[i].VendorId != pDI->VendorId) ||
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(pOldHeaderInfo[i].DeviceId != pDI->DeviceId) ||
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(pOldHeaderInfo[i].SubSysId != pDI->SubSysId) ||
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(pOldHeaderInfo[i].Revision != pDI->Revision))
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{
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NewEntries++;
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}
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}
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pNewHeaderInfo = (FDEVICEHEADER*) MemAlloc(sizeof(FDEVICEHEADER) * NewEntries);
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if (pNewHeaderInfo == NULL)
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{
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goto FileError;
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}
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// Fill in the header info for each device and save it to the new file
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dwOffset = (sizeof(FDEVICEHEADER) * NewEntries) + sizeof(DWORD);
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pNewHeaderInfo[0].VendorId = pDI->VendorId;
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pNewHeaderInfo[0].DeviceId = pDI->DeviceId;
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pNewHeaderInfo[0].SubSysId = pDI->SubSysId;
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pNewHeaderInfo[0].Revision = pDI->Revision;
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pNewHeaderInfo[0].FileOffset = dwOffset;
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pNewHeaderInfo[0].Size = CapsSize;
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dwOffset += CapsSize;
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NextEntry = 1;
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for (i = 0; i < OldHeaderSize / sizeof (FDEVICEHEADER); i++)
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{
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if ((pOldHeaderInfo[i].VendorId != pDI->VendorId) ||
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(pOldHeaderInfo[i].DeviceId != pDI->DeviceId) ||
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(pOldHeaderInfo[i].SubSysId != pDI->SubSysId) ||
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(pOldHeaderInfo[i].Revision != pDI->Revision))
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{
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pNewHeaderInfo[NextEntry].VendorId = pOldHeaderInfo[i].VendorId;
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pNewHeaderInfo[NextEntry].DeviceId = pOldHeaderInfo[i].DeviceId;
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pNewHeaderInfo[NextEntry].SubSysId = pOldHeaderInfo[i].SubSysId;
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pNewHeaderInfo[NextEntry].Revision = pOldHeaderInfo[i].Revision;
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pNewHeaderInfo[NextEntry].FileOffset = dwOffset;
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pNewHeaderInfo[NextEntry].Size = pOldHeaderInfo[i].Size;
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dwOffset += pOldHeaderInfo[i].Size;
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NextEntry++;
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}
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}
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NewHeaderSize = sizeof(FDEVICEHEADER) * NewEntries;
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WriteFile (hNew, &NewHeaderSize, sizeof(NewHeaderSize), &NumWritten, NULL);
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if (NumWritten != sizeof(NewHeaderSize))
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{
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goto FileError;
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}
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WriteFile (hNew, pNewHeaderInfo, NewHeaderSize, &NumWritten, NULL);
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if (NumWritten != NewHeaderSize)
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{
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goto FileError;
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}
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// Write the new device data to the file
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WriteFile (hNew, pCaps, CapsSize, &NumWritten, NULL);
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if (NumWritten != CapsSize)
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{
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goto FileError;
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}
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if (NewEntries > 1)
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{
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// Figure out how big the biggest device size is and allocate a buffer
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// to hold it
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Biggest = 0;
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for (i = 1; i < NewEntries; i++)
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{
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if (pNewHeaderInfo[i].Size > Biggest)
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{
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Biggest = pNewHeaderInfo[i].Size;
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}
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}
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pBuffer = (BYTE*) MemAlloc(Biggest);
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if (pBuffer == NULL)
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{
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goto FileError;
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}
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// Now read the device data from the old file and write it to
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// the new on.
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NextEntry = 0;
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for (i = 0; i < OldHeaderSize / sizeof (FDEVICEHEADER); i++)
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{
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if ((pOldHeaderInfo[i].VendorId != pDI->VendorId) ||
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(pOldHeaderInfo[i].DeviceId != pDI->DeviceId) ||
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(pOldHeaderInfo[i].SubSysId != pDI->SubSysId) ||
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(pOldHeaderInfo[i].Revision != pDI->Revision))
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{
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if (SetFilePointer (hOld, pOldHeaderInfo[i].FileOffset, NULL, FILE_BEGIN) !=
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pOldHeaderInfo[i].FileOffset)
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{
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goto FileError;
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}
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ReadFile (hOld, pBuffer, pOldHeaderInfo[i].Size, &NumRead, NULL);
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if (NumRead < pOldHeaderInfo[i].Size)
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{
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goto FileError;
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}
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WriteFile (hNew, pBuffer, pOldHeaderInfo[i].Size, &NumWritten, NULL);
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if (NumWritten != pOldHeaderInfo[i].Size)
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{
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goto FileError;
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}
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}
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}
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}
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// If we made it this far, then everything worked
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CloseHandle(hNew);
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CloseHandle(hOld);
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DeleteFile(FName);
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MoveFile(NewFName, FName);
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if (pNewHeaderInfo != NULL)
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{
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MemFree(pNewHeaderInfo);
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}
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if (pOldHeaderInfo != NULL)
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{
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MemFree(pOldHeaderInfo);
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}
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if (pBuffer != NULL)
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{
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MemFree(pBuffer);
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}
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return;
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FileError:
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CloseHandle(hNew);
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CloseHandle(hOld);
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DeleteFile(FName);
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DeleteFile(NewFName);
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if (pNewHeaderInfo != NULL)
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{
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MemFree(pNewHeaderInfo);
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}
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if (pOldHeaderInfo != NULL)
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{
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MemFree(pOldHeaderInfo);
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}
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if (pBuffer != NULL)
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{
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MemFree(pBuffer);
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}
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}
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}
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void RemoveFromCache(D3DADAPTER_IDENTIFIER8* pDI)
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{
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char FName[MAX_PATH + 16];
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char NewFName[MAX_PATH + 16];
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BOOL bNewFile = FALSE;
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HANDLE hOld;
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HANDLE hNew;
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DWORD NewHeaderSize;
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DWORD OldHeaderSize;
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DWORD NumWritten;
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DWORD NumRead;
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FDEVICEHEADER* pOldHeaderInfo = NULL;
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FDEVICEHEADER* pNewHeaderInfo = NULL;
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DWORD dwOffset;
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DWORD i;
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DWORD NewEntries;
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DWORD NextEntry;
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DWORD Biggest;
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BYTE* pBuffer = NULL;
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// Does the file already exist, or do we need to create a new one?
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hOld = OpenCacheFile (GENERIC_READ, OPEN_EXISTING, DXCACHEFILENAME, FName);
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if (hOld == INVALID_HANDLE_VALUE)
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{
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return;
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}
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ReadFile (hOld, &OldHeaderSize, sizeof(DWORD), &NumRead, NULL);
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if (NumRead < sizeof(DWORD))
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{
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goto FileError;
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}
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if (OldHeaderSize <= sizeof(FDEVICEHEADER))
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{
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// Theres only one entry in the file, so all we need to do
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// is delete it.
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DeleteFile(FName);
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return;
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}
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pOldHeaderInfo = (FDEVICEHEADER*) MemAlloc(OldHeaderSize);
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if (pOldHeaderInfo == NULL)
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{
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goto FileError;
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}
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ReadFile (hOld, pOldHeaderInfo, OldHeaderSize, &NumRead, NULL);
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if (NumRead < OldHeaderSize)
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{
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goto FileError;
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}
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// Create a new file and copy all of the contents from the existing file over.
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hNew = OpenCacheFile (GENERIC_WRITE, CREATE_ALWAYS, DXTEMPFILENAME, NewFName);
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if (hNew == INVALID_HANDLE_VALUE)
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{
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goto FileError;
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}
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// How many entries will exist in the new header?
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NewEntries = 0;
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for (i = 0; i < OldHeaderSize / sizeof (FDEVICEHEADER); i++)
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{
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if ((pOldHeaderInfo[i].VendorId != pDI->VendorId) ||
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(pOldHeaderInfo[i].DeviceId != pDI->DeviceId) ||
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(pOldHeaderInfo[i].SubSysId != pDI->SubSysId) ||
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(pOldHeaderInfo[i].Revision != pDI->Revision))
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{
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NewEntries++;
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}
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}
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pNewHeaderInfo = (FDEVICEHEADER*) MemAlloc(sizeof(FDEVICEHEADER) * NewEntries);
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if (pNewHeaderInfo == NULL)
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{
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goto FileError;
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}
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// Fill in the header info for each device and save it to the new file
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dwOffset = (sizeof(FDEVICEHEADER) * NewEntries) + sizeof(DWORD);
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NextEntry = 0;
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for (i = 0; i < OldHeaderSize / sizeof (FDEVICEHEADER); i++)
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{
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if ((pOldHeaderInfo[i].VendorId != pDI->VendorId) ||
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(pOldHeaderInfo[i].DeviceId != pDI->DeviceId) ||
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(pOldHeaderInfo[i].SubSysId != pDI->SubSysId) ||
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(pOldHeaderInfo[i].Revision != pDI->Revision))
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{
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pNewHeaderInfo[NextEntry].VendorId = pOldHeaderInfo[i].VendorId;
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pNewHeaderInfo[NextEntry].DeviceId = pOldHeaderInfo[i].DeviceId;
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pNewHeaderInfo[NextEntry].SubSysId = pOldHeaderInfo[i].SubSysId;
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pNewHeaderInfo[NextEntry].Revision = pOldHeaderInfo[i].Revision;
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pNewHeaderInfo[NextEntry].FileOffset = dwOffset;
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pNewHeaderInfo[NextEntry].Size = pOldHeaderInfo[i].Size;
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dwOffset += pOldHeaderInfo[i].Size;
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NextEntry++;
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}
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}
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NewHeaderSize = sizeof(FDEVICEHEADER) * NewEntries;
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WriteFile (hNew, &NewHeaderSize, sizeof(NewHeaderSize), &NumWritten, NULL);
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if (NumWritten != sizeof(NewHeaderSize))
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{
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goto FileError;
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}
|
|
WriteFile (hNew, pNewHeaderInfo, NewHeaderSize, &NumWritten, NULL);
|
|
if (NumWritten != NewHeaderSize)
|
|
{
|
|
goto FileError;
|
|
}
|
|
|
|
// Figure out how big the biggest device size is and allocate a buffer
|
|
// to hold it
|
|
|
|
Biggest = 0;
|
|
for (i = 0; i < NewEntries; i++)
|
|
{
|
|
if (pNewHeaderInfo[i].Size > Biggest)
|
|
{
|
|
Biggest = pNewHeaderInfo[i].Size;
|
|
}
|
|
}
|
|
|
|
pBuffer = (BYTE*) MemAlloc(Biggest);
|
|
if (pBuffer == NULL)
|
|
{
|
|
goto FileError;
|
|
}
|
|
|
|
// Now read the device data from the old file and write it to
|
|
// the new on.
|
|
|
|
NextEntry = 0;
|
|
for (i = 0; i < OldHeaderSize / sizeof (FDEVICEHEADER); i++)
|
|
{
|
|
if ((pOldHeaderInfo[i].VendorId != pDI->VendorId) ||
|
|
(pOldHeaderInfo[i].DeviceId != pDI->DeviceId) ||
|
|
(pOldHeaderInfo[i].SubSysId != pDI->SubSysId) ||
|
|
(pOldHeaderInfo[i].Revision != pDI->Revision))
|
|
{
|
|
if (SetFilePointer (hOld, pOldHeaderInfo[i].FileOffset, NULL, FILE_BEGIN) !=
|
|
pOldHeaderInfo[i].FileOffset)
|
|
{
|
|
goto FileError;
|
|
}
|
|
ReadFile (hOld, pBuffer, pOldHeaderInfo[i].Size, &NumRead, NULL);
|
|
if (NumRead < pOldHeaderInfo[i].Size)
|
|
{
|
|
goto FileError;
|
|
}
|
|
WriteFile (hNew, pBuffer, pOldHeaderInfo[i].Size, &NumWritten, NULL);
|
|
if (NumWritten != pOldHeaderInfo[i].Size)
|
|
{
|
|
goto FileError;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If we made it this far, then everything worked
|
|
|
|
CloseHandle(hNew);
|
|
CloseHandle(hOld);
|
|
DeleteFile(FName);
|
|
MoveFile(NewFName, FName);
|
|
if (pNewHeaderInfo != NULL)
|
|
{
|
|
MemFree(pNewHeaderInfo);
|
|
}
|
|
if (pOldHeaderInfo != NULL)
|
|
{
|
|
MemFree(pOldHeaderInfo);
|
|
}
|
|
if (pBuffer != NULL)
|
|
{
|
|
MemFree(pBuffer);
|
|
}
|
|
return;
|
|
|
|
FileError:
|
|
CloseHandle(hNew);
|
|
CloseHandle(hOld);
|
|
|
|
if (pNewHeaderInfo != NULL)
|
|
{
|
|
MemFree(pNewHeaderInfo);
|
|
}
|
|
if (pOldHeaderInfo != NULL)
|
|
{
|
|
MemFree(pOldHeaderInfo);
|
|
}
|
|
if (pBuffer != NULL)
|
|
{
|
|
MemFree(pBuffer);
|
|
}
|
|
}
|