/* * ReactOS W32 Subsystem * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include #define NDEBUG #include static const RGBQUAD EGAColorsQuads[16] = { /* rgbBlue, rgbGreen, rgbRed, rgbReserved */ { 0x00, 0x00, 0x00, 0x00 }, { 0x00, 0x00, 0x80, 0x00 }, { 0x00, 0x80, 0x00, 0x00 }, { 0x00, 0x80, 0x80, 0x00 }, { 0x80, 0x00, 0x00, 0x00 }, { 0x80, 0x00, 0x80, 0x00 }, { 0x80, 0x80, 0x00, 0x00 }, { 0x80, 0x80, 0x80, 0x00 }, { 0xc0, 0xc0, 0xc0, 0x00 }, { 0x00, 0x00, 0xff, 0x00 }, { 0x00, 0xff, 0x00, 0x00 }, { 0x00, 0xff, 0xff, 0x00 }, { 0xff, 0x00, 0x00, 0x00 }, { 0xff, 0x00, 0xff, 0x00 }, { 0xff, 0xff, 0x00, 0x00 }, { 0xff, 0xff, 0xff, 0x00 } }; static const RGBQUAD DefLogPaletteQuads[20] = { /* Copy of Default Logical Palette */ /* rgbBlue, rgbGreen, rgbRed, rgbReserved */ { 0x00, 0x00, 0x00, 0x00 }, { 0x00, 0x00, 0x80, 0x00 }, { 0x00, 0x80, 0x00, 0x00 }, { 0x00, 0x80, 0x80, 0x00 }, { 0x80, 0x00, 0x00, 0x00 }, { 0x80, 0x00, 0x80, 0x00 }, { 0x80, 0x80, 0x00, 0x00 }, { 0xc0, 0xc0, 0xc0, 0x00 }, { 0xc0, 0xdc, 0xc0, 0x00 }, { 0xf0, 0xca, 0xa6, 0x00 }, { 0xf0, 0xfb, 0xff, 0x00 }, { 0xa4, 0xa0, 0xa0, 0x00 }, { 0x80, 0x80, 0x80, 0x00 }, { 0x00, 0x00, 0xf0, 0x00 }, { 0x00, 0xff, 0x00, 0x00 }, { 0x00, 0xff, 0xff, 0x00 }, { 0xff, 0x00, 0x00, 0x00 }, { 0xff, 0x00, 0xff, 0x00 }, { 0xff, 0xff, 0x00, 0x00 }, { 0xff, 0xff, 0xff, 0x00 } }; UINT APIENTRY IntSetDIBColorTable( HDC hDC, UINT StartIndex, UINT Entries, CONST RGBQUAD *Colors) { PDC dc; PSURFACE psurf; PPALETTE PalGDI; UINT Index; ULONG biBitCount; if (!(dc = DC_LockDc(hDC))) return 0; if (dc->dctype == DC_TYPE_INFO) { DC_UnlockDc(dc); return 0; } psurf = dc->dclevel.pSurface; if (psurf == NULL) { DC_UnlockDc(dc); SetLastWin32Error(ERROR_INVALID_PARAMETER); return 0; } if (psurf->hSecure == NULL) { DC_UnlockDc(dc); SetLastWin32Error(ERROR_INVALID_PARAMETER); return 0; } biBitCount = BitsPerFormat(psurf->SurfObj.iBitmapFormat); if (biBitCount <= 8 && StartIndex < (1 << biBitCount)) { if (StartIndex + Entries > (1 << biBitCount)) Entries = (1 << biBitCount) - StartIndex; PalGDI = PALETTE_LockPalette(psurf->hDIBPalette); if (PalGDI == NULL) { DC_UnlockDc(dc); SetLastWin32Error(ERROR_INVALID_HANDLE); return 0; } for (Index = StartIndex; Index < StartIndex + Entries && Index < PalGDI->NumColors; Index++) { PalGDI->IndexedColors[Index].peRed = Colors[Index - StartIndex].rgbRed; PalGDI->IndexedColors[Index].peGreen = Colors[Index - StartIndex].rgbGreen; PalGDI->IndexedColors[Index].peBlue = Colors[Index - StartIndex].rgbBlue; } PALETTE_UnlockPalette(PalGDI); } else Entries = 0; /* Mark the brushes invalid */ dc->pdcattr->ulDirty_ |= DIRTY_FILL|DIRTY_LINE|DIRTY_BACKGROUND|DIRTY_TEXT; DC_UnlockDc(dc); return Entries; } UINT APIENTRY IntGetDIBColorTable( HDC hDC, UINT StartIndex, UINT Entries, RGBQUAD *Colors) { PDC dc; PSURFACE psurf; PPALETTE PalGDI; UINT Index, Count = 0; ULONG biBitCount; if (!(dc = DC_LockDc(hDC))) return 0; if (dc->dctype == DC_TYPE_INFO) { DC_UnlockDc(dc); return 0; } psurf = dc->dclevel.pSurface; if (psurf == NULL) { DC_UnlockDc(dc); SetLastWin32Error(ERROR_INVALID_PARAMETER); return 0; } if (psurf->hSecure == NULL) { DC_UnlockDc(dc); SetLastWin32Error(ERROR_INVALID_PARAMETER); return 0; } biBitCount = BitsPerFormat(psurf->SurfObj.iBitmapFormat); if (biBitCount <= 8 && StartIndex < (1 << biBitCount)) { if (StartIndex + Entries > (1 << biBitCount)) Entries = (1 << biBitCount) - StartIndex; PalGDI = PALETTE_LockPalette(psurf->hDIBPalette); if (PalGDI == NULL) { DC_UnlockDc(dc); SetLastWin32Error(ERROR_INVALID_HANDLE); return 0; } for (Index = StartIndex; Index < StartIndex + Entries && Index < PalGDI->NumColors; Index++) { Colors[Index - StartIndex].rgbRed = PalGDI->IndexedColors[Index].peRed; Colors[Index - StartIndex].rgbGreen = PalGDI->IndexedColors[Index].peGreen; Colors[Index - StartIndex].rgbBlue = PalGDI->IndexedColors[Index].peBlue; Colors[Index - StartIndex].rgbReserved = 0; Count++; } PALETTE_UnlockPalette(PalGDI); } DC_UnlockDc(dc); return Count; } // Converts a DIB to a device-dependent bitmap static INT FASTCALL IntSetDIBits( PDC DC, HBITMAP hBitmap, UINT StartScan, UINT ScanLines, CONST VOID *Bits, CONST BITMAPINFO *bmi, UINT ColorUse) { SURFACE *bitmap; HBITMAP SourceBitmap; INT result = 0; BOOL copyBitsResult; SURFOBJ *DestSurf, *SourceSurf; SIZEL SourceSize; POINTL ZeroPoint; RECTL DestRect; EXLATEOBJ exlo; PPALETTE ppalDDB, ppalDIB; //RGBQUAD *lpRGB; HPALETTE DDB_Palette, DIB_Palette; ULONG DIB_Palette_Type; INT DIBWidth; // Check parameters if (!(bitmap = SURFACE_LockSurface(hBitmap))) { return 0; } // Get RGB values //if (ColorUse == DIB_PAL_COLORS) // lpRGB = DIB_MapPaletteColors(hDC, bmi); //else // lpRGB = &bmi->bmiColors; DestSurf = &bitmap->SurfObj; // Create source surface SourceSize.cx = bmi->bmiHeader.biWidth; SourceSize.cy = ScanLines; // Determine width of DIB DIBWidth = DIB_GetDIBWidthBytes(SourceSize.cx, bmi->bmiHeader.biBitCount); SourceBitmap = EngCreateBitmap(SourceSize, DIBWidth, BitmapFormat(bmi->bmiHeader.biBitCount, bmi->bmiHeader.biCompression), bmi->bmiHeader.biHeight < 0 ? BMF_TOPDOWN : 0, (PVOID) Bits); if (0 == SourceBitmap) { SURFACE_UnlockSurface(bitmap); SetLastWin32Error(ERROR_NO_SYSTEM_RESOURCES); return 0; } SourceSurf = EngLockSurface((HSURF)SourceBitmap); if (NULL == SourceSurf) { EngDeleteSurface((HSURF)SourceBitmap); SURFACE_UnlockSurface(bitmap); SetLastWin32Error(ERROR_NO_SYSTEM_RESOURCES); return 0; } // Use hDIBPalette if it exists if (bitmap->hDIBPalette) { DDB_Palette = bitmap->hDIBPalette; } else { // Destination palette obtained from the hDC DDB_Palette = DC->ppdev->devinfo.hpalDefault; } ppalDDB = PALETTE_LockPalette(DDB_Palette); if (NULL == ppalDDB) { EngUnlockSurface(SourceSurf); EngDeleteSurface((HSURF)SourceBitmap); SURFACE_UnlockSurface(bitmap); SetLastWin32Error(ERROR_INVALID_HANDLE); return 0; } // Source palette obtained from the BITMAPINFO DIB_Palette = BuildDIBPalette((PBITMAPINFO)bmi, (PINT)&DIB_Palette_Type); if (NULL == DIB_Palette) { EngUnlockSurface(SourceSurf); EngDeleteSurface((HSURF)SourceBitmap); SURFACE_UnlockSurface(bitmap); SetLastWin32Error(ERROR_NO_SYSTEM_RESOURCES); return 0; } ppalDIB = PALETTE_LockPalette(DIB_Palette); /* Initialize XLATEOBJ for color translation */ EXLATEOBJ_vInitialize(&exlo, ppalDIB, ppalDDB, 0, 0, 0); // Zero point ZeroPoint.x = 0; ZeroPoint.y = 0; // Determine destination rectangle DestRect.left = 0; DestRect.top = abs(bmi->bmiHeader.biHeight) - StartScan - ScanLines; DestRect.right = SourceSize.cx; DestRect.bottom = DestRect.top + ScanLines; copyBitsResult = IntEngCopyBits(DestSurf, SourceSurf, NULL, &exlo.xlo, &DestRect, &ZeroPoint); // If it succeeded, return number of scanlines copies if (copyBitsResult == TRUE) { result = SourceSize.cy; // or // result = abs(bmi->bmiHeader.biHeight) - StartScan; } // Clean up EXLATEOBJ_vCleanup(&exlo); PALETTE_UnlockPalette(ppalDIB); PALETTE_UnlockPalette(ppalDDB); PALETTE_FreePaletteByHandle(DIB_Palette); EngUnlockSurface(SourceSurf); EngDeleteSurface((HSURF)SourceBitmap); // if (ColorUse == DIB_PAL_COLORS) // WinFree((LPSTR)lpRGB); SURFACE_UnlockSurface(bitmap); return result; } // FIXME by Removing NtGdiSetDIBits!!! // This is a victim of the Win32k Initialization BUG!!!!! // Converts a DIB to a device-dependent bitmap INT APIENTRY NtGdiSetDIBits( HDC hDC, HBITMAP hBitmap, UINT StartScan, UINT ScanLines, CONST VOID *Bits, CONST BITMAPINFO *bmi, UINT ColorUse) { PDC Dc; INT Ret; NTSTATUS Status = STATUS_SUCCESS; UINT cjBits; if (!Bits) return 0; _SEH2_TRY { // FYI: We converted from CORE in gdi. ProbeForRead(bmi, sizeof(BITMAPINFO), 1); cjBits = bmi->bmiHeader.biBitCount * bmi->bmiHeader.biPlanes * bmi->bmiHeader.biWidth; cjBits = ((cjBits + 31) & ~31) / 8; cjBits *= ScanLines; ProbeForRead(Bits, cjBits, 1); } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { Status = _SEH2_GetExceptionCode(); } _SEH2_END if (!NT_SUCCESS(Status)) { return 0; } Dc = DC_LockDc(hDC); if (NULL == Dc) { SetLastWin32Error(ERROR_INVALID_HANDLE); return 0; } if (Dc->dctype == DC_TYPE_INFO) { DC_UnlockDc(Dc); return 0; } Ret = IntSetDIBits(Dc, hBitmap, StartScan, ScanLines, Bits, bmi, ColorUse); DC_UnlockDc(Dc); return Ret; } W32KAPI INT APIENTRY NtGdiSetDIBitsToDeviceInternal( IN HDC hDC, IN INT XDest, IN INT YDest, IN DWORD Width, IN DWORD Height, IN INT XSrc, IN INT YSrc, IN DWORD StartScan, IN DWORD ScanLines, IN LPBYTE Bits, IN LPBITMAPINFO bmi, IN DWORD ColorUse, IN UINT cjMaxBits, IN UINT cjMaxInfo, IN BOOL bTransformCoordinates, IN OPTIONAL HANDLE hcmXform) { INT ret = 0; NTSTATUS Status = STATUS_SUCCESS; PDC pDC; HBITMAP hSourceBitmap = NULL; SURFOBJ *pDestSurf, *pSourceSurf = NULL; SURFACE *pSurf; RECTL rcDest; POINTL ptSource; INT DIBWidth; SIZEL SourceSize; EXLATEOBJ exlo; PPALETTE ppalDDB = NULL, ppalDIB = NULL; HPALETTE hpalDDB, hpalDIB = NULL; ULONG DIBPaletteType; if (!Bits) return 0; _SEH2_TRY { ProbeForRead(bmi, cjMaxInfo , 1); ProbeForRead(Bits, cjMaxBits, 1); } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { Status = _SEH2_GetExceptionCode(); } _SEH2_END if (!NT_SUCCESS(Status)) { return 0; } pDC = DC_LockDc(hDC); if (!pDC) { SetLastWin32Error(ERROR_INVALID_HANDLE); return 0; } if (pDC->dctype == DC_TYPE_INFO) { DC_UnlockDc(pDC); return 0; } /* Use destination palette obtained from the DC by default */ hpalDDB = pDC->ppdev->devinfo.hpalDefault; /* Try to use hDIBPalette if it exists */ pSurf = pDC->dclevel.pSurface; if (pSurf && pSurf->hDIBPalette) { hpalDDB = pSurf->hDIBPalette; } pDestSurf = pSurf ? &pSurf->SurfObj : NULL; ScanLines = min(ScanLines, abs(bmi->bmiHeader.biHeight) - StartScan); rcDest.left = XDest; rcDest.top = YDest; if (bTransformCoordinates) { CoordLPtoDP(pDC, (LPPOINT)&rcDest); } rcDest.left += pDC->ptlDCOrig.x; rcDest.top += pDC->ptlDCOrig.y; rcDest.right = rcDest.left + Width; rcDest.bottom = rcDest.top + Height; rcDest.top += StartScan; ptSource.x = XSrc; ptSource.y = YSrc; SourceSize.cx = bmi->bmiHeader.biWidth; SourceSize.cy = ScanLines; DIBWidth = DIB_GetDIBWidthBytes(SourceSize.cx, bmi->bmiHeader.biBitCount); hSourceBitmap = EngCreateBitmap(SourceSize, DIBWidth, BitmapFormat(bmi->bmiHeader.biBitCount, bmi->bmiHeader.biCompression), bmi->bmiHeader.biHeight < 0 ? BMF_TOPDOWN : 0, (PVOID) Bits); if (!hSourceBitmap) { SetLastWin32Error(ERROR_NO_SYSTEM_RESOURCES); Status = STATUS_NO_MEMORY; goto Exit; } pSourceSurf = EngLockSurface((HSURF)hSourceBitmap); if (!pSourceSurf) { Status = STATUS_UNSUCCESSFUL; goto Exit; } /* Obtain destination palette */ ppalDDB = PALETTE_LockPalette(hpalDDB); if (!ppalDDB) { SetLastWin32Error(ERROR_INVALID_HANDLE); Status = STATUS_UNSUCCESSFUL; goto Exit; } /* Create a palette for the DIB */ hpalDIB = BuildDIBPalette(bmi, (PINT)&DIBPaletteType); if (!hpalDIB) { SetLastWin32Error(ERROR_NO_SYSTEM_RESOURCES); Status = STATUS_NO_MEMORY; goto Exit; } /* Lock the DIB palette */ ppalDIB = PALETTE_LockPalette(hpalDIB); if (!ppalDDB) { SetLastWin32Error(ERROR_INVALID_HANDLE); Status = STATUS_UNSUCCESSFUL; goto Exit; } /* Initialize EXLATEOBJ */ EXLATEOBJ_vInitialize(&exlo, ppalDIB, ppalDDB, 0, 0, 0); /* Copy the bits */ DPRINT("BitsToDev with dstsurf=(%d|%d) (%d|%d), src=(%d|%d) w=%d h=%d\n", rcDest.left, rcDest.top, rcDest.right, rcDest.bottom, ptSource.x, ptSource.y, SourceSize.cx, SourceSize.cy); Status = IntEngBitBlt(pDestSurf, pSourceSurf, NULL, pDC->rosdc.CombinedClip, &exlo.xlo, &rcDest, &ptSource, NULL, NULL, NULL, ROP3_TO_ROP4(SRCCOPY)); /* Cleanup EXLATEOBJ */ EXLATEOBJ_vCleanup(&exlo); Exit: if (NT_SUCCESS(Status)) { ret = ScanLines; } if (ppalDIB) PALETTE_UnlockPalette(ppalDIB); if (ppalDDB) PALETTE_UnlockPalette(ppalDDB); if (pSourceSurf) EngUnlockSurface(pSourceSurf); if (hSourceBitmap) EngDeleteSurface((HSURF)hSourceBitmap); if (hpalDIB) PALETTE_FreePaletteByHandle(hpalDIB); DC_UnlockDc(pDC); return ret; } /* Converts a device-dependent bitmap to a DIB */ INT APIENTRY NtGdiGetDIBitsInternal( HDC hDC, HBITMAP hBitmap, UINT StartScan, UINT ScanLines, LPBYTE Bits, LPBITMAPINFO Info, UINT Usage, UINT MaxBits, UINT MaxInfo) { PDC Dc; SURFACE *psurf = NULL; HBITMAP hDestBitmap = NULL; HPALETTE hSourcePalette = NULL; HPALETTE hDestPalette = NULL; PPALETTE ppalSrc = NULL; PPALETTE ppalDst = NULL; NTSTATUS Status = STATUS_SUCCESS; ULONG Result = 0; BOOL bPaletteMatch = FALSE; PBYTE ChkBits = Bits; PVOID ColorPtr; RGBQUAD *rgbQuads; ULONG DestPaletteType; ULONG Index; DPRINT("Entered NtGdiGetDIBitsInternal()\n"); if ((Usage && Usage != DIB_PAL_COLORS) || !Info || !hBitmap) return 0; // if ScanLines == 0, no need to copy Bits. if (!ScanLines) ChkBits = NULL; _SEH2_TRY { ProbeForRead(&Info->bmiHeader.biSize, sizeof(DWORD), 1); ProbeForWrite(Info, Info->bmiHeader.biSize, 1); // Comp for Core. if (ChkBits) ProbeForWrite(ChkBits, MaxBits, 1); } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { Status = _SEH2_GetExceptionCode(); } _SEH2_END if (!NT_SUCCESS(Status)) { return 0; } Dc = DC_LockDc(hDC); if (Dc == NULL) return 0; if (Dc->dctype == DC_TYPE_INFO) { DC_UnlockDc(Dc); return 0; } DC_UnlockDc(Dc); /* Get a pointer to the source bitmap object */ psurf = SURFACE_LockSurface(hBitmap); if (psurf == NULL) return 0; hSourcePalette = psurf->hDIBPalette; if (!hSourcePalette) { hSourcePalette = pPrimarySurface->devinfo.hpalDefault; } ColorPtr = ((PBYTE)Info + Info->bmiHeader.biSize); rgbQuads = (RGBQUAD *)ColorPtr; /* Copy palette information * Always create a palette for 15 & 16 bit. */ if ((Info->bmiHeader.biBitCount == BitsPerFormat(psurf->SurfObj.iBitmapFormat) && Info->bmiHeader.biBitCount != 15 && Info->bmiHeader.biBitCount != 16) || !ChkBits) { hDestPalette = hSourcePalette; bPaletteMatch = TRUE; } else hDestPalette = BuildDIBPalette(Info, (PINT)&DestPaletteType); //hDestPalette = Dc->DevInfo->hpalDefault; ppalSrc = PALETTE_LockPalette(hSourcePalette); /* FIXME - ppalSrc can be NULL!!! Don't assert here! */ ASSERT(ppalSrc); if (!bPaletteMatch) { ppalDst = PALETTE_LockPalette(hDestPalette); /* FIXME - ppalDst can be NULL!!!! Don't assert here!!! */ DPRINT("ppalDst : %p\n", ppalDst); ASSERT(ppalDst); } else { ppalDst = ppalSrc; } /* Copy palette. */ /* FIXME: This is largely incomplete. ATM no Core!*/ switch (Info->bmiHeader.biBitCount) { case 1: case 4: case 8: Info->bmiHeader.biClrUsed = 0; if (psurf->hSecure && BitsPerFormat(psurf->SurfObj.iBitmapFormat) == Info->bmiHeader.biBitCount) { if (Usage == DIB_RGB_COLORS) { if (ppalDst->NumColors != 1 << Info->bmiHeader.biBitCount) Info->bmiHeader.biClrUsed = ppalDst->NumColors; for (Index = 0; Index < (1 << Info->bmiHeader.biBitCount) && Index < ppalDst->NumColors; Index++) { rgbQuads[Index].rgbRed = ppalDst->IndexedColors[Index].peRed; rgbQuads[Index].rgbGreen = ppalDst->IndexedColors[Index].peGreen; rgbQuads[Index].rgbBlue = ppalDst->IndexedColors[Index].peBlue; rgbQuads[Index].rgbReserved = 0; } } else { PWORD Ptr = ColorPtr; for (Index = 0; Index < (1 << Info->bmiHeader.biBitCount); Index++) { Ptr[Index] = (WORD)Index; } } } else { if (Usage == DIB_PAL_COLORS) { PWORD Ptr = ColorPtr; for (Index = 0; Index < (1 << Info->bmiHeader.biBitCount); Index++) { Ptr[Index] = (WORD)Index; } } else if (Info->bmiHeader.biBitCount > 1 && bPaletteMatch) { for (Index = 0; Index < (1 << Info->bmiHeader.biBitCount) && Index < ppalDst->NumColors; Index++) { Info->bmiColors[Index].rgbRed = ppalDst->IndexedColors[Index].peRed; Info->bmiColors[Index].rgbGreen = ppalDst->IndexedColors[Index].peGreen; Info->bmiColors[Index].rgbBlue = ppalDst->IndexedColors[Index].peBlue; Info->bmiColors[Index].rgbReserved = 0; } } else { switch (Info->bmiHeader.biBitCount) { case 1: rgbQuads[0].rgbRed = rgbQuads[0].rgbGreen = rgbQuads[0].rgbBlue = 0; rgbQuads[0].rgbReserved = 0; rgbQuads[1].rgbRed = rgbQuads[1].rgbGreen = rgbQuads[1].rgbBlue = 0xff; rgbQuads[1].rgbReserved = 0; break; case 4: RtlCopyMemory(ColorPtr, EGAColorsQuads, sizeof(EGAColorsQuads)); break; case 8: { INT r, g, b; RGBQUAD *color; RtlCopyMemory(rgbQuads, DefLogPaletteQuads, 10 * sizeof(RGBQUAD)); RtlCopyMemory(rgbQuads + 246, DefLogPaletteQuads + 10, 10 * sizeof(RGBQUAD)); color = rgbQuads + 10; for (r = 0; r <= 5; r++) /* FIXME */ for (g = 0; g <= 5; g++) for (b = 0; b <= 5; b++) { color->rgbRed = (r * 0xff) / 5; color->rgbGreen = (g * 0xff) / 5; color->rgbBlue = (b * 0xff) / 5; color->rgbReserved = 0; color++; } } break; } } } case 15: if (Info->bmiHeader.biCompression == BI_BITFIELDS) { ((PDWORD)Info->bmiColors)[0] = 0x7c00; ((PDWORD)Info->bmiColors)[1] = 0x03e0; ((PDWORD)Info->bmiColors)[2] = 0x001f; } break; case 16: if (Info->bmiHeader.biCompression == BI_BITFIELDS) { ((PDWORD)Info->bmiColors)[0] = 0xf800; ((PDWORD)Info->bmiColors)[1] = 0x07e0; ((PDWORD)Info->bmiColors)[2] = 0x001f; } break; case 24: case 32: if (Info->bmiHeader.biCompression == BI_BITFIELDS) { ((PDWORD)Info->bmiColors)[0] = 0xff0000; ((PDWORD)Info->bmiColors)[1] = 0x00ff00; ((PDWORD)Info->bmiColors)[2] = 0x0000ff; } break; } if (!bPaletteMatch) PALETTE_UnlockPalette(ppalDst); /* fill out the BITMAPINFO struct */ if (!ChkBits) { // Core or not to Core? We have converted from Core in Gdi~ so? if (Info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER)) { BITMAPCOREHEADER* coreheader = (BITMAPCOREHEADER*) Info; coreheader->bcWidth = psurf->SurfObj.sizlBitmap.cx; coreheader->bcPlanes = 1; coreheader->bcBitCount = BitsPerFormat(psurf->SurfObj.iBitmapFormat); coreheader->bcHeight = psurf->SurfObj.sizlBitmap.cy; if (psurf->SurfObj.lDelta > 0) coreheader->bcHeight = -coreheader->bcHeight; } if (Info->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER)) { Info->bmiHeader.biWidth = psurf->SurfObj.sizlBitmap.cx; Info->bmiHeader.biHeight = psurf->SurfObj.sizlBitmap.cy; Info->bmiHeader.biPlanes = 1; Info->bmiHeader.biBitCount = BitsPerFormat(psurf->SurfObj.iBitmapFormat); switch (psurf->SurfObj.iBitmapFormat) { /* FIXME: What about BI_BITFIELDS? */ case BMF_1BPP: case BMF_4BPP: case BMF_8BPP: case BMF_16BPP: case BMF_24BPP: case BMF_32BPP: Info->bmiHeader.biCompression = BI_RGB; break; case BMF_4RLE: Info->bmiHeader.biCompression = BI_RLE4; break; case BMF_8RLE: Info->bmiHeader.biCompression = BI_RLE8; break; case BMF_JPEG: Info->bmiHeader.biCompression = BI_JPEG; break; case BMF_PNG: Info->bmiHeader.biCompression = BI_PNG; break; } /* Image size has to be calculated */ Info->bmiHeader.biSizeImage = DIB_GetDIBWidthBytes(Info->bmiHeader.biWidth, Info->bmiHeader.biBitCount) * Info->bmiHeader.biHeight; Info->bmiHeader.biXPelsPerMeter = 0; /* FIXME */ Info->bmiHeader.biYPelsPerMeter = 0; /* FIXME */ Info->bmiHeader.biClrUsed = 0; Info->bmiHeader.biClrImportant = 1 << Info->bmiHeader.biBitCount; /* FIXME */ /* Report negtive height for top-down bitmaps. */ if (psurf->SurfObj.lDelta > 0) Info->bmiHeader.biHeight = -Info->bmiHeader.biHeight; } Result = psurf->SurfObj.sizlBitmap.cy; } else { SIZEL DestSize; POINTL SourcePoint; // // If we have a good dib pointer, why not just copy bits from there w/o XLATE'ing them. // /* Create the destination bitmap too for the copy operation */ if (StartScan > psurf->SurfObj.sizlBitmap.cy) { goto cleanup; } else { ScanLines = min(ScanLines, psurf->SurfObj.sizlBitmap.cy - StartScan); DestSize.cx = psurf->SurfObj.sizlBitmap.cx; DestSize.cy = ScanLines; hDestBitmap = NULL; if (Info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER)) { BITMAPCOREHEADER* coreheader = (BITMAPCOREHEADER*) Info; hDestBitmap = EngCreateBitmap(DestSize, DIB_GetDIBWidthBytes(DestSize.cx, coreheader->bcBitCount), BitmapFormat(coreheader->bcBitCount, BI_RGB), 0 < coreheader->bcHeight ? 0 : BMF_TOPDOWN, Bits); } if (Info->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER)) { Info->bmiHeader.biSizeImage = DIB_GetDIBWidthBytes(DestSize.cx, Info->bmiHeader.biBitCount) * DestSize.cy; hDestBitmap = EngCreateBitmap(DestSize, DIB_GetDIBWidthBytes(DestSize.cx, Info->bmiHeader.biBitCount), BitmapFormat(Info->bmiHeader.biBitCount, Info->bmiHeader.biCompression), 0 < Info->bmiHeader.biHeight ? 0 : BMF_TOPDOWN, Bits); } if (hDestBitmap == NULL) goto cleanup; } if (NT_SUCCESS(Status)) { EXLATEOBJ exlo; SURFOBJ *DestSurfObj; RECTL DestRect; EXLATEOBJ_vInitialize(&exlo, ppalSrc, ppalDst, 0, 0, 0); SourcePoint.x = 0; SourcePoint.y = psurf->SurfObj.sizlBitmap.cy - (StartScan + ScanLines); /* Determine destination rectangle */ DestRect.top = 0; DestRect.left = 0; DestRect.right = DestSize.cx; DestRect.bottom = DestSize.cy; DestSurfObj = EngLockSurface((HSURF)hDestBitmap); if (IntEngCopyBits(DestSurfObj, &psurf->SurfObj, NULL, &exlo.xlo, &DestRect, &SourcePoint)) { DPRINT("GetDIBits %d \n",abs(Info->bmiHeader.biHeight) - StartScan); Result = ScanLines; } EXLATEOBJ_vCleanup(&exlo); EngUnlockSurface(DestSurfObj); } } cleanup: PALETTE_UnlockPalette(ppalSrc); if (hDestBitmap != NULL) EngDeleteSurface((HSURF)hDestBitmap); if (hDestPalette != NULL && bPaletteMatch == FALSE) PALETTE_FreePaletteByHandle(hDestPalette); SURFACE_UnlockSurface(psurf); DPRINT("leaving NtGdiGetDIBitsInternal\n"); return Result; } INT APIENTRY NtGdiStretchDIBitsInternal( HDC hDC, INT XDest, INT YDest, INT DestWidth, INT DestHeight, INT XSrc, INT YSrc, INT SrcWidth, INT SrcHeight, LPBYTE Bits, LPBITMAPINFO BitsInfo, DWORD Usage, DWORD ROP, UINT cjMaxInfo, UINT cjMaxBits, HANDLE hcmXform) { HBITMAP hBitmap, hOldBitmap = NULL; HDC hdcMem; HPALETTE hPal = NULL; PDC pDC; BOOL Hit = FALSE; if (!Bits || !BitsInfo) { SetLastWin32Error(ERROR_INVALID_PARAMETER); return 0; } _SEH2_TRY { ProbeForRead(BitsInfo, cjMaxInfo, 1); ProbeForRead(Bits, cjMaxBits, 1); } _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER) { Hit = TRUE; } _SEH2_END if (Hit) { DPRINT1("NtGdiStretchDIBitsInternal fail to read BitMapInfo: %x or Bits: %x\n",BitsInfo,Bits); return 0; } hdcMem = NtGdiCreateCompatibleDC(hDC); if (hdcMem == NULL) { DPRINT1("NtGdiCreateCompatibleDC fail create hdc\n"); return 0; } hBitmap = NtGdiCreateCompatibleBitmap(hDC, abs(BitsInfo->bmiHeader.biWidth), abs(BitsInfo->bmiHeader.biHeight)); if (hBitmap == NULL) { DPRINT1("NtGdiCreateCompatibleBitmap fail create bitmap\n"); DPRINT1("hDC : 0x%08x \n", hDC); DPRINT1("BitsInfo->bmiHeader.biWidth : 0x%08x \n", BitsInfo->bmiHeader.biWidth); DPRINT1("BitsInfo->bmiHeader.biHeight : 0x%08x \n", BitsInfo->bmiHeader.biHeight); return 0; } /* Select the bitmap into hdcMem, and save a handle to the old bitmap */ hOldBitmap = NtGdiSelectBitmap(hdcMem, hBitmap); if (Usage == DIB_PAL_COLORS) { hPal = NtGdiGetDCObject(hDC, GDI_OBJECT_TYPE_PALETTE); hPal = GdiSelectPalette(hdcMem, hPal, FALSE); } if (BitsInfo->bmiHeader.biCompression == BI_RLE4 || BitsInfo->bmiHeader.biCompression == BI_RLE8) { /* copy existing bitmap from destination dc */ if (SrcWidth == DestWidth && SrcHeight == DestHeight) NtGdiBitBlt(hdcMem, XSrc, abs(BitsInfo->bmiHeader.biHeight) - SrcHeight - YSrc, SrcWidth, SrcHeight, hDC, XDest, YDest, ROP, 0, 0); else NtGdiStretchBlt(hdcMem, XSrc, abs(BitsInfo->bmiHeader.biHeight) - SrcHeight - YSrc, SrcWidth, SrcHeight, hDC, XDest, YDest, DestWidth, DestHeight, ROP, 0); } pDC = DC_LockDc(hdcMem); if (pDC != NULL) { /* Note BitsInfo->bmiHeader.biHeight is the number of scanline, * if it negitve we getting to many scanline for scanline is UINT not * a INT, so we need make the negtive value to positve and that make the * count correct for negtive bitmap, TODO : we need testcase for this api */ IntSetDIBits(pDC, hBitmap, 0, abs(BitsInfo->bmiHeader.biHeight), Bits, BitsInfo, Usage); DC_UnlockDc(pDC); } /* Origin for DIBitmap may be bottom left (positive biHeight) or top left (negative biHeight) */ if (SrcWidth == DestWidth && SrcHeight == DestHeight) NtGdiBitBlt(hDC, XDest, YDest, DestWidth, DestHeight, hdcMem, XSrc, abs(BitsInfo->bmiHeader.biHeight) - SrcHeight - YSrc, ROP, 0, 0); else NtGdiStretchBlt(hDC, XDest, YDest, DestWidth, DestHeight, hdcMem, XSrc, abs(BitsInfo->bmiHeader.biHeight) - SrcHeight - YSrc, SrcWidth, SrcHeight, ROP, 0); /* cleanup */ if (hPal) GdiSelectPalette(hdcMem, hPal, FALSE); if (hOldBitmap) NtGdiSelectBitmap(hdcMem, hOldBitmap); NtGdiDeleteObjectApp(hdcMem); GreDeleteObject(hBitmap); return SrcHeight; } HBITMAP FASTCALL IntCreateDIBitmap( PDC Dc, INT width, INT height, UINT bpp, DWORD init, LPBYTE bits, PBITMAPINFO data, DWORD coloruse) { HBITMAP handle; BOOL fColor; // Check if we should create a monochrome or color bitmap. We create a monochrome bitmap only if it has exactly 2 // colors, which are black followed by white, nothing else. In all other cases, we create a color bitmap. if (bpp != 1) fColor = TRUE; else if ((coloruse != DIB_RGB_COLORS) || (init != CBM_INIT) || !data) fColor = FALSE; else { if (data->bmiHeader.biSize == sizeof(BITMAPINFOHEADER)) { const RGBQUAD *rgb = data->bmiColors; DWORD col = RGB(rgb->rgbRed, rgb->rgbGreen, rgb->rgbBlue); // Check if the first color of the colormap is black if ((col == RGB(0, 0, 0))) { rgb++; col = RGB(rgb->rgbRed, rgb->rgbGreen, rgb->rgbBlue); // If the second color is white, create a monochrome bitmap fColor = (col != RGB(0xff,0xff,0xff)); } else fColor = TRUE; } else if (data->bmiHeader.biSize == sizeof(BITMAPCOREHEADER)) { RGBTRIPLE *rgb = ((BITMAPCOREINFO *)data)->bmciColors; DWORD col = RGB(rgb->rgbtRed, rgb->rgbtGreen, rgb->rgbtBlue); if ((col == RGB(0,0,0))) { rgb++; col = RGB(rgb->rgbtRed, rgb->rgbtGreen, rgb->rgbtBlue); fColor = (col != RGB(0xff,0xff,0xff)); } else fColor = TRUE; } else { DPRINT("(%ld): wrong size for data\n", data->bmiHeader.biSize); return 0; } } // Now create the bitmap if (fColor) { handle = IntCreateCompatibleBitmap(Dc, width, height); } else { handle = IntGdiCreateBitmap(width, height, 1, 1, NULL); } if (height < 0) height = -height; if (NULL != handle && CBM_INIT == init) { IntSetDIBits(Dc, handle, 0, height, bits, data, coloruse); } return handle; } // The CreateDIBitmap function creates a device-dependent bitmap (DDB) from a DIB and, optionally, sets the bitmap bits // The DDB that is created will be whatever bit depth your reference DC is HBITMAP APIENTRY NtGdiCreateDIBitmapInternal( IN HDC hDc, IN INT cx, IN INT cy, IN DWORD fInit, IN OPTIONAL LPBYTE pjInit, IN OPTIONAL LPBITMAPINFO pbmi, IN DWORD iUsage, IN UINT cjMaxInitInfo, IN UINT cjMaxBits, IN FLONG fl, IN HANDLE hcmXform) { PDC Dc; HBITMAP Bmp; UINT bpp; if (!hDc) // CreateBitmap { // Should use System Bitmap DC hSystemBM, with CreateCompatibleDC for this. hDc = IntGdiCreateDC(NULL, NULL, NULL, NULL,FALSE); if (!hDc) { SetLastWin32Error(ERROR_INVALID_HANDLE); return NULL; } Dc = DC_LockDc(hDc); if (!Dc) { NtGdiDeleteObjectApp(hDc); SetLastWin32Error(ERROR_INVALID_HANDLE); return NULL; } bpp = 1; Bmp = IntCreateDIBitmap(Dc, cx, cy, bpp, fInit, pjInit, pbmi, iUsage); DC_UnlockDc(Dc); NtGdiDeleteObjectApp(hDc); } else // CreateCompatibleBitmap { Dc = DC_LockDc(hDc); if (!Dc) { SetLastWin32Error(ERROR_INVALID_HANDLE); return NULL; } /* pbmi == null First create an un-initialised bitmap. The depth of the bitmap should match that of the hdc and not that supplied in bmih. */ if (pbmi) bpp = pbmi->bmiHeader.biBitCount; else { if (Dc->dctype != DC_TYPE_MEMORY) bpp = Dc->ppdev->gdiinfo.cBitsPixel; else { DIBSECTION dibs; INT Count; SURFACE *psurf = Dc->dclevel.pSurface; Count = BITMAP_GetObject(psurf, sizeof(dibs), &dibs); if (!Count) bpp = 1; else { if (Count == sizeof(BITMAP)) /* A device-dependent bitmap is selected in the DC */ bpp = dibs.dsBm.bmBitsPixel; else /* A DIB section is selected in the DC */ bpp = dibs.dsBmih.biBitCount; } } } Bmp = IntCreateDIBitmap(Dc, cx, cy, bpp, fInit, pjInit, pbmi, iUsage); DC_UnlockDc(Dc); } return Bmp; } HBITMAP APIENTRY NtGdiCreateDIBSection( IN HDC hDC, IN OPTIONAL HANDLE hSection, IN DWORD dwOffset, IN LPBITMAPINFO bmi, IN DWORD Usage, IN UINT cjHeader, IN FLONG fl, IN ULONG_PTR dwColorSpace, OUT PVOID *Bits) { HBITMAP hbitmap = 0; DC *dc; BOOL bDesktopDC = FALSE; if (!bmi) return hbitmap; // Make sure. // If the reference hdc is null, take the desktop dc if (hDC == 0) { hDC = NtGdiCreateCompatibleDC(0); bDesktopDC = TRUE; } if ((dc = DC_LockDc(hDC))) { hbitmap = DIB_CreateDIBSection(dc, (BITMAPINFO*)bmi, Usage, Bits, hSection, dwOffset, 0); DC_UnlockDc(dc); } else { SetLastWin32Error(ERROR_INVALID_HANDLE); } if (bDesktopDC) NtGdiDeleteObjectApp(hDC); return hbitmap; } HBITMAP APIENTRY DIB_CreateDIBSection( PDC dc, BITMAPINFO *bmi, UINT usage, LPVOID *bits, HANDLE section, DWORD offset, DWORD ovr_pitch) { HBITMAP res = 0; SURFACE *bmp = NULL; void *mapBits = NULL; PDC_ATTR pdcattr; // Fill BITMAP32 structure with DIB data BITMAPINFOHEADER *bi = &bmi->bmiHeader; INT effHeight; ULONG totalSize; BITMAP bm; SIZEL Size; RGBQUAD *lpRGB; HANDLE hSecure; DWORD dsBitfields[3] = {0}; ULONG ColorCount; DPRINT("format (%ld,%ld), planes %d, bpp %d, size %ld, colors %ld (%s)\n", bi->biWidth, bi->biHeight, bi->biPlanes, bi->biBitCount, bi->biSizeImage, bi->biClrUsed, usage == DIB_PAL_COLORS? "PAL" : "RGB"); /* CreateDIBSection should fail for compressed formats */ if (bi->biCompression == BI_RLE4 || bi->biCompression == BI_RLE8) { return (HBITMAP)NULL; } pdcattr = dc->pdcattr; effHeight = bi->biHeight >= 0 ? bi->biHeight : -bi->biHeight; bm.bmType = 0; bm.bmWidth = bi->biWidth; bm.bmHeight = effHeight; bm.bmWidthBytes = ovr_pitch ? ovr_pitch : (ULONG) DIB_GetDIBWidthBytes(bm.bmWidth, bi->biBitCount); bm.bmPlanes = bi->biPlanes; bm.bmBitsPixel = bi->biBitCount; bm.bmBits = NULL; // Get storage location for DIB bits. Only use biSizeImage if it's valid and // we're dealing with a compressed bitmap. Otherwise, use width * height. totalSize = bi->biSizeImage && bi->biCompression != BI_RGB ? bi->biSizeImage : (ULONG)(bm.bmWidthBytes * effHeight); if (section) { SYSTEM_BASIC_INFORMATION Sbi; NTSTATUS Status; DWORD mapOffset; LARGE_INTEGER SectionOffset; SIZE_T mapSize; Status = ZwQuerySystemInformation(SystemBasicInformation, &Sbi, sizeof Sbi, 0); if (!NT_SUCCESS(Status)) { return NULL; } mapOffset = offset - (offset % Sbi.AllocationGranularity); mapSize = bi->biSizeImage + (offset - mapOffset); SectionOffset.LowPart = mapOffset; SectionOffset.HighPart = 0; Status = ZwMapViewOfSection(section, NtCurrentProcess(), &mapBits, 0, 0, &SectionOffset, &mapSize, ViewShare, 0, PAGE_READWRITE); if (!NT_SUCCESS(Status)) { SetLastWin32Error(ERROR_INVALID_PARAMETER); return NULL; } if (mapBits) bm.bmBits = (char *)mapBits + (offset - mapOffset); } else if (ovr_pitch && offset) bm.bmBits = (LPVOID) offset; else { offset = 0; bm.bmBits = EngAllocUserMem(totalSize, 0); } // hSecure = MmSecureVirtualMemory(bm.bmBits, totalSize, PAGE_READWRITE); hSecure = (HANDLE)0x1; // HACK OF UNIMPLEMENTED KERNEL STUFF !!!! if (usage == DIB_PAL_COLORS) { lpRGB = DIB_MapPaletteColors(dc, bmi); ColorCount = bi->biClrUsed; if (ColorCount == 0) { ColorCount = 1 << bi->biBitCount; } } else { lpRGB = bmi->bmiColors; ColorCount = 1 << bi->biBitCount; } /* Set dsBitfields values */ if (usage == DIB_PAL_COLORS || bi->biBitCount <= 8) { dsBitfields[0] = dsBitfields[1] = dsBitfields[2] = 0; } else if (bi->biCompression == BI_RGB) { switch (bi->biBitCount) { case 15: case 16: dsBitfields[0] = (bi->biCompression == BI_BITFIELDS) ? *(DWORD *)lpRGB : 0x7c00; dsBitfields[1] = (bi->biCompression == BI_BITFIELDS) ? *((DWORD *)lpRGB + 1) : 0x03e0; dsBitfields[2] = (bi->biCompression == BI_BITFIELDS) ? *((DWORD *)lpRGB + 2) : 0x001f; break; case 24: case 32: dsBitfields[0] = (bi->biCompression == BI_BITFIELDS) ? *(DWORD *)lpRGB : 0xff0000; dsBitfields[1] = (bi->biCompression == BI_BITFIELDS) ? *((DWORD *)lpRGB + 1) : 0x00ff00; dsBitfields[2] = (bi->biCompression == BI_BITFIELDS) ? *((DWORD *)lpRGB + 2) : 0x0000ff; break; } } else { dsBitfields[0] = ((DWORD*)bmi->bmiColors)[0]; dsBitfields[1] = ((DWORD*)bmi->bmiColors)[1]; dsBitfields[2] = ((DWORD*)bmi->bmiColors)[2]; } // Create Device Dependent Bitmap and add DIB pointer Size.cx = bm.bmWidth; Size.cy = abs(bm.bmHeight); res = IntCreateBitmap(Size, bm.bmWidthBytes, BitmapFormat(bi->biBitCount * bi->biPlanes, bi->biCompression), BMF_DONTCACHE | BMF_USERMEM | BMF_NOZEROINIT | (bi->biHeight < 0 ? BMF_TOPDOWN : 0), bm.bmBits); if (!res) { if (lpRGB != bmi->bmiColors) { ExFreePoolWithTag(lpRGB, TAG_COLORMAP); } SetLastWin32Error(ERROR_NO_SYSTEM_RESOURCES); return NULL; } bmp = SURFACE_LockSurface(res); if (NULL == bmp) { if (lpRGB != bmi->bmiColors) { ExFreePoolWithTag(lpRGB, TAG_COLORMAP); } SetLastWin32Error(ERROR_INVALID_HANDLE); GreDeleteObject(bmp); return NULL; } /* WINE NOTE: WINE makes use of a colormap, which is a color translation table between the DIB and the X physical device. Obviously, this is left out of the ReactOS implementation. Instead, we call NtGdiSetDIBColorTable. */ if (bi->biBitCount <= 8) { bi->biClrUsed = 1 << bi->biBitCount; } else { bi->biClrUsed = 0; } bmp->hDIBSection = section; bmp->hSecure = hSecure; bmp->dwOffset = offset; bmp->flFlags = BITMAPOBJ_IS_APIBITMAP; bmp->dsBitfields[0] = dsBitfields[0]; bmp->dsBitfields[1] = dsBitfields[1]; bmp->dsBitfields[2] = dsBitfields[2]; bmp->biClrUsed = bi->biClrUsed; bmp->biClrImportant = bi->biClrImportant; if (bi->biClrUsed != 0) { bmp->hDIBPalette = PALETTE_AllocPaletteIndexedRGB(ColorCount, lpRGB); } else { bmp->hDIBPalette = PALETTE_AllocPalette(PAL_BITFIELDS, 0, NULL, dsBitfields[0], dsBitfields[1], dsBitfields[2]); } // Clean up in case of errors if (!res || !bmp || !bm.bmBits) { DPRINT("got an error res=%08x, bmp=%p, bm.bmBits=%p\n", res, bmp, bm.bmBits); if (bm.bmBits) { // MmUnsecureVirtualMemory(hSecure); // FIXME: Implement this! if (section) { ZwUnmapViewOfSection(NtCurrentProcess(), mapBits); bm.bmBits = NULL; } else if (!offset) EngFreeUserMem(bm.bmBits), bm.bmBits = NULL; } if (bmp) bmp = NULL; if (res) { SURFACE_FreeSurfaceByHandle(res); res = 0; } } if (lpRGB != bmi->bmiColors) { ExFreePoolWithTag(lpRGB, TAG_COLORMAP); } if (bmp) { SURFACE_UnlockSurface(bmp); } // Return BITMAP handle and storage location if (NULL != bm.bmBits && NULL != bits) { *bits = bm.bmBits; } if (res) pdcattr->ulDirty_ |= DC_DIBSECTION; return res; } /*********************************************************************** * DIB_GetDIBWidthBytes * * Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned. * http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/struc/src/str01.htm * 11/16/1999 (RJJ) lifted from wine */ INT FASTCALL DIB_GetDIBWidthBytes(INT width, INT depth) { return ((width * depth + 31) & ~31) >> 3; } /*********************************************************************** * DIB_GetDIBImageBytes * * Return the number of bytes used to hold the image in a DIB bitmap. * 11/16/1999 (RJJ) lifted from wine */ INT APIENTRY DIB_GetDIBImageBytes(INT width, INT height, INT depth) { return DIB_GetDIBWidthBytes(width, depth) * (height < 0 ? -height : height); } /*********************************************************************** * DIB_BitmapInfoSize * * Return the size of the bitmap info structure including color table. * 11/16/1999 (RJJ) lifted from wine */ INT FASTCALL DIB_BitmapInfoSize(const BITMAPINFO * info, WORD coloruse) { int colors; if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER)) { BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)info; colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0; return sizeof(BITMAPCOREHEADER) + colors * ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD)); } else /* assume BITMAPINFOHEADER */ { colors = info->bmiHeader.biClrUsed; if (!colors && (info->bmiHeader.biBitCount <= 8)) colors = 1 << info->bmiHeader.biBitCount; return sizeof(BITMAPINFOHEADER) + colors * ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD)); } } RGBQUAD * FASTCALL DIB_MapPaletteColors(PDC dc, CONST BITMAPINFO* lpbmi) { RGBQUAD *lpRGB; ULONG nNumColors,i; USHORT *lpIndex; PPALETTE palGDI; palGDI = PALETTE_LockPalette(dc->dclevel.hpal); if (NULL == palGDI) { return NULL; } if (palGDI->Mode != PAL_INDEXED) { PALETTE_UnlockPalette(palGDI); return NULL; } nNumColors = 1 << lpbmi->bmiHeader.biBitCount; if (lpbmi->bmiHeader.biClrUsed) { nNumColors = min(nNumColors, lpbmi->bmiHeader.biClrUsed); } lpRGB = (RGBQUAD *)ExAllocatePoolWithTag(PagedPool, sizeof(RGBQUAD) * nNumColors, TAG_COLORMAP); if (lpRGB == NULL) { PALETTE_UnlockPalette(palGDI); return NULL; } lpIndex = (USHORT *)&lpbmi->bmiColors[0]; for (i = 0; i < nNumColors; i++) { if (*lpIndex < palGDI->NumColors) { lpRGB[i].rgbRed = palGDI->IndexedColors[*lpIndex].peRed; lpRGB[i].rgbGreen = palGDI->IndexedColors[*lpIndex].peGreen; lpRGB[i].rgbBlue = palGDI->IndexedColors[*lpIndex].peBlue; } else { lpRGB[i].rgbRed = 0; lpRGB[i].rgbGreen = 0; lpRGB[i].rgbBlue = 0; } lpRGB[i].rgbReserved = 0; lpIndex++; } PALETTE_UnlockPalette(palGDI); return lpRGB; } HPALETTE FASTCALL BuildDIBPalette(CONST BITMAPINFO *bmi, PINT paletteType) { BYTE bits; ULONG ColorCount; PALETTEENTRY *palEntries = NULL; HPALETTE hPal; ULONG RedMask, GreenMask, BlueMask; // Determine Bits Per Pixel bits = bmi->bmiHeader.biBitCount; // Determine paletteType from Bits Per Pixel if (bits <= 8) { *paletteType = PAL_INDEXED; RedMask = GreenMask = BlueMask = 0; } else if (bmi->bmiHeader.biCompression == BI_BITFIELDS) { *paletteType = PAL_BITFIELDS; RedMask = ((ULONG *)bmi->bmiColors)[0]; GreenMask = ((ULONG *)bmi->bmiColors)[1]; BlueMask = ((ULONG *)bmi->bmiColors)[2]; } else if (bits < 24) { *paletteType = PAL_BITFIELDS; RedMask = 0x7c00; GreenMask = 0x03e0; BlueMask = 0x001f; } else { *paletteType = PAL_BGR; RedMask = 0xff0000; GreenMask = 0x00ff00; BlueMask = 0x0000ff; } if (bmi->bmiHeader.biClrUsed == 0) { ColorCount = 1 << bmi->bmiHeader.biBitCount; } else { ColorCount = bmi->bmiHeader.biClrUsed; } if (PAL_INDEXED == *paletteType) { hPal = PALETTE_AllocPaletteIndexedRGB(ColorCount, (RGBQUAD*)bmi->bmiColors); } else { hPal = PALETTE_AllocPalette(*paletteType, ColorCount, (ULONG*) palEntries, RedMask, GreenMask, BlueMask); } return hPal; } /* EOF */