return pvBase;
}
-typedef struct tagBITMAPV5INFO
-{
- BITMAPV5HEADER bmiHeader;
- RGBQUAD bmiColors[256];
-} BITMAPV5INFO, *PBITMAPV5INFO;
-
-// FIXME: this should go to dibobj.c
-NTSTATUS
-ProbeAndConvertBitmapInfo(
- OUT BITMAPV5HEADER *pbmhDst,
- OUT RGBQUAD *pbmiColorsDst,
- ULONG cColors,
- IN PBITMAPINFO pbmiUnsafe)
-{
- DWORD dwSize;
- RGBQUAD *pbmiColors;
- ULONG ulWidthBytes;
-
- /* Get the size and probe */
- ProbeForRead(&pbmiUnsafe->bmiHeader.biSize, sizeof(DWORD), 1);
- dwSize = pbmiUnsafe->bmiHeader.biSize;
- ProbeForRead(pbmiUnsafe, dwSize, 1);
-
- /* Check the size */
- // FIXME: are intermediate sizes allowed? As what are they interpreted?
- // make sure we don't use a too big dwSize later
- if (dwSize != sizeof(BITMAPCOREHEADER) &&
- dwSize != sizeof(BITMAPINFOHEADER) &&
- dwSize != sizeof(BITMAPV4HEADER) &&
- dwSize != sizeof(BITMAPV5HEADER))
- {
- return STATUS_INVALID_PARAMETER;
- }
-
- pbmiColors = (RGBQUAD*)((PCHAR)pbmiUnsafe + dwSize);
-
- pbmhDst->bV5Size = sizeof(BITMAPV5HEADER);
-
- if (dwSize == sizeof(BITMAPCOREHEADER))
- {
- PBITMAPCOREHEADER pbch = (PBITMAPCOREHEADER)pbmiUnsafe;
-
- /* Manually copy the fields that are present */
- pbmhDst->bV5Width = pbch->bcWidth;
- pbmhDst->bV5Height = pbch->bcHeight;
- pbmhDst->bV5Planes = pbch->bcPlanes;
- pbmhDst->bV5BitCount = pbch->bcBitCount;
-
- /* Set some default values */
- pbmhDst->bV5Compression = BI_RGB;
- pbmhDst->bV5SizeImage = 0;
- pbmhDst->bV5XPelsPerMeter = 72;
- pbmhDst->bV5YPelsPerMeter = 72;
- pbmhDst->bV5ClrUsed = 0;
- pbmhDst->bV5ClrImportant = 0;
- }
- else
- {
- /* Copy valid fields */
- memcpy(pbmhDst, pbmiUnsafe, dwSize);
-
- /* Zero out the rest of the V5 header */
- memset((char*)pbmhDst + dwSize, 0, sizeof(BITMAPV5HEADER) - dwSize);
- }
-
-
- if (dwSize < sizeof(BITMAPV4HEADER))
- {
- if (pbmhDst->bV5Compression == BI_BITFIELDS)
- {
- DWORD *pMasks = (DWORD*)pbmiColors;
- pbmhDst->bV5RedMask = pMasks[0];
- pbmhDst->bV5GreenMask = pMasks[1];
- pbmhDst->bV5BlueMask = pMasks[2];
- pbmhDst->bV5AlphaMask = 0;
- pbmhDst->bV5ClrUsed = 0;
- }
-
-// pbmhDst->bV5CSType;
-// pbmhDst->bV5Endpoints;
-// pbmhDst->bV5GammaRed;
-// pbmhDst->bV5GammaGreen;
-// pbmhDst->bV5GammaBlue;
- }
-
- if (dwSize < sizeof(BITMAPV5HEADER))
- {
-// pbmhDst->bV5Intent;
-// pbmhDst->bV5ProfileData;
-// pbmhDst->bV5ProfileSize;
-// pbmhDst->bV5Reserved;
- }
-
- ulWidthBytes = ((pbmhDst->bV5Width * pbmhDst->bV5Planes *
- pbmhDst->bV5BitCount + 31) & ~31) / 8;
-
- if (pbmhDst->bV5SizeImage == 0)
- pbmhDst->bV5SizeImage = abs(ulWidthBytes * pbmhDst->bV5Height);
-
- if (pbmhDst->bV5ClrUsed == 0)
- pbmhDst->bV5ClrUsed = pbmhDst->bV5BitCount == 1 ? 2 :
- (pbmhDst->bV5BitCount == 4 ? 16 :
- (pbmhDst->bV5BitCount == 8 ? 256 : 0));
-
- if (pbmhDst->bV5Planes != 1)
- {
- return STATUS_INVALID_PARAMETER;
- }
-
- if (pbmhDst->bV5BitCount != 0 && pbmhDst->bV5BitCount != 1 &&
- pbmhDst->bV5BitCount != 4 && pbmhDst->bV5BitCount != 8 &&
- pbmhDst->bV5BitCount != 16 && pbmhDst->bV5BitCount != 24 &&
- pbmhDst->bV5BitCount != 32)
- {
- DPRINT("Invalid bit count: %d\n", pbmhDst->bV5BitCount);
- return STATUS_INVALID_PARAMETER;
- }
-
- if ((pbmhDst->bV5BitCount == 0 &&
- pbmhDst->bV5Compression != BI_JPEG && pbmhDst->bV5Compression != BI_PNG))
- {
- DPRINT("Bit count 0 is invalid for compression %d.\n", pbmhDst->bV5Compression);
- return STATUS_INVALID_PARAMETER;
- }
-
- if (pbmhDst->bV5Compression == BI_BITFIELDS &&
- pbmhDst->bV5BitCount != 16 && pbmhDst->bV5BitCount != 32)
- {
- DPRINT("Bit count %d is invalid for compression BI_BITFIELDS.\n", pbmhDst->bV5BitCount);
- return STATUS_INVALID_PARAMETER;
- }
-
- /* Copy Colors */
- cColors = min(cColors, pbmhDst->bV5ClrUsed);
- memcpy(pbmiColorsDst, pbmiColors, cColors * sizeof(RGBQUAD));
-
- return STATUS_SUCCESS;
-}
-
-
HBITMAP
NTAPI
UserLoadImage(PCWSTR pwszName)
{
- NTSTATUS Status;
+ NTSTATUS Status = STATUS_SUCCESS;
HANDLE hFile, hSection;
BITMAPFILEHEADER *pbmfh;
LPBITMAPINFO pbmi;
- ULONG cjInfoSize;
PVOID pvBits;
HBITMAP hbmp = 0;
- BITMAPV5INFO bmiLocal;
+
+ DPRINT("Enter UserLoadImage(%ls)\n", pwszName);
/* Open the file */
hFile = W32kOpenFile(pwszName, FILE_READ_DATA);
- if (hFile == INVALID_HANDLE_VALUE)
- return NULL;
+ if (!hFile)
+ {
+ return NULL;
+ }
/* Create a section */
hSection = W32kCreateFileSection(hFile, SEC_COMMIT, PAGE_READONLY, 0);
ZwClose(hFile);
if (!hSection)
- return NULL;
+ {
+ return NULL;
+ }
/* Map the section */
pbmfh = W32kMapViewOfSection(hSection, PAGE_READONLY, 0);
ZwClose(hSection);
if (!pbmfh)
- return NULL;
-
- /* Get a pointer to the BITMAPINFO */
- pbmi = (LPBITMAPINFO)(pbmfh + 1);
-
- /* Create a normalized local BITMAPINFO */
- _SEH2_TRY
{
- Status = ProbeAndConvertBitmapInfo(&bmiLocal.bmiHeader,
- bmiLocal.bmiColors,
- 256,
- pbmi);
+ return NULL;
}
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- Status = _SEH2_GetExceptionCode();
- }
- _SEH2_END
- if (NT_SUCCESS(Status))
- {
- cjInfoSize = bmiLocal.bmiHeader.bV5Size +
- bmiLocal.bmiHeader.bV5ClrUsed * sizeof(RGBQUAD);
- pvBits = (PVOID)((PCHAR)pbmi + cjInfoSize);
-
- // FIXME: use Gre... so that the BITMAPINFO doesn't get probed
- hbmp = NtGdiCreateDIBitmapInternal(NULL,
- bmiLocal.bmiHeader.bV5Width,
- bmiLocal.bmiHeader.bV5Height,
- CBM_INIT,
- pvBits,
- pbmi,
- DIB_RGB_COLORS,
- bmiLocal.bmiHeader.bV5Size,
- bmiLocal.bmiHeader.bV5SizeImage,
- 0,
- 0);
- }
+ /* Get a pointer to the BITMAPINFO */
+ pbmi = (LPBITMAPINFO)(pbmfh + 1);
+ _SEH2_TRY
+ {
+ ProbeForRead(&pbmfh->bfSize, sizeof(DWORD), 1);
+ ProbeForRead(pbmfh, pbmfh->bfSize, 1);
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ Status = _SEH2_GetExceptionCode();
+ }
+ _SEH2_END
+
+ if(!NT_SUCCESS(Status))
+ {
+ DPRINT1("Bad File?\n");
+ goto leave;
+ }
+
+ if (pbmfh->bfType == 0x4D42 /* 'BM' */)
+ {
+ /* Could be BITMAPCOREINFO */
+ BITMAPINFO* pConvertedInfo;
+ HDC hdc;
+
+ pvBits = (PVOID)((PCHAR)pbmfh + pbmfh->bfOffBits);
+
+ pConvertedInfo = DIB_ConvertBitmapInfo(pbmi, DIB_RGB_COLORS);
+ if(!pConvertedInfo)
+ {
+ DPRINT1("Unable to convert the bitmap Info\n");
+ goto leave;
+ }
+
+ hdc = IntGdiCreateDC(NULL, NULL, NULL, NULL,FALSE);
+
+ hbmp = GreCreateDIBitmapInternal(hdc,
+ pConvertedInfo->bmiHeader.biWidth,
+ pConvertedInfo->bmiHeader.biHeight,
+ CBM_INIT,
+ pvBits,
+ pConvertedInfo,
+ DIB_RGB_COLORS,
+ 0,
+ 0);
+
+ NtGdiDeleteObjectApp(hdc);
+ DIB_FreeConvertedBitmapInfo(pConvertedInfo, pbmi);
+ }
+ else
+ {
+ DPRINT1("Unknown file type!\n");
+ }
+
+leave:
/* Unmap our section, we don't need it anymore */
ZwUnmapViewOfSection(NtCurrentProcess(), pbmfh);
projects / reactos.git / blobdiff