bitmap.c File Reference

#include <precomp.h>
#include <pseh/pseh2.h>
#include <debug.h>

Include dependency graph for bitmap.c:

Go to the source code of this file.

Macros
#define	NDEBUG
#define	WIDTH_BYTES_ALIGN32(cx, bpp)   ((((cx) * (bpp) + 31) & ~31) >> 3)
#define	MaxScanLines   1000
#define	MaxHeight   2000
#define	MaxSourceHeight   2000
#define	IS_ALIGNED(Pointer, Alignment)    (((ULONG_PTR)(void *)(Pointer)) % (Alignment) == 0)

Functions
ULONG FASTCALL	BitmapFormat (ULONG cBits, ULONG iCompression)
INT FASTCALL	DIB_BitmapInfoSize (const BITMAPINFO *info, WORD coloruse, BOOL max)
UINT FASTCALL	DIB_BitmapMaxBitsSize (PBITMAPINFO Info, UINT ScanLines)
INT WINAPI	DIB_GetBitmapInfo (const BITMAPINFOHEADER *header, PLONG width, PLONG height, PWORD planes, PWORD bpp, PLONG compr, PLONG size)
int WINAPI	GdiGetBitmapBitsSize (BITMAPINFO *lpbmi)
HBITMAP WINAPI	CreateDIBSection (HDC hDC, CONST BITMAPINFO *BitmapInfo, UINT Usage, VOID **Bits, HANDLE hSection, DWORD dwOffset)
HBITMAP WINAPI	CreateBitmap (INT Width, INT Height, UINT Planes, UINT BitsPixel, CONST VOID *pUnsafeBits)
HBITMAP WINAPI	CreateBitmapIndirect (const BITMAP *pbm)
HBITMAP WINAPI	CreateDiscardableBitmap (HDC hDC, INT Width, INT Height)
HBITMAP WINAPI	CreateCompatibleBitmap (HDC hDC, INT Width, INT Height)
INT WINAPI	GetDIBits (HDC hDC, HBITMAP hbmp, UINT uStartScan, UINT cScanLines, LPVOID lpvBits, LPBITMAPINFO lpbmi, UINT uUsage)
HBITMAP WINAPI	CreateDIBitmap (HDC hDC, const BITMAPINFOHEADER *Header, DWORD Init, LPCVOID Bits, const BITMAPINFO *Data, UINT ColorUse)
INT WINAPI	SetDIBits (HDC hDC, HBITMAP hBitmap, UINT uStartScan, UINT cScanLines, CONST VOID *lpvBits, CONST BITMAPINFO *lpbmi, UINT fuColorUse)
INT WINAPI	SetDIBitsToDevice (HDC hdc, int XDest, int YDest, DWORD Width, DWORD Height, int XSrc, int YSrc, UINT StartScan, UINT ScanLines, CONST VOID *Bits, CONST BITMAPINFO *lpbmi, UINT ColorUse)
int WINAPI	StretchDIBits (HDC hdc, int XDest, int YDest, int nDestWidth, int nDestHeight, int XSrc, int YSrc, int nSrcWidth, int nSrcHeight, CONST VOID *lpBits, CONST BITMAPINFO *lpBitsInfo, UINT iUsage, DWORD dwRop)
DWORD WINAPI	GetBitmapAttributes (HBITMAP hbm)
HBITMAP WINAPI	SetBitmapAttributes (HBITMAP hbm, DWORD dwFlags)
HBITMAP WINAPI	ClearBitmapAttributes (HBITMAP hbm, DWORD dwFlags)

Variables
UCHAR	gajBitsPerFormat [11]

Macro Definition Documentation

IS_ALIGNED

#define IS_ALIGNED	(		Pointer,
			Alignment
	)		(((ULONG_PTR)(void *)(Pointer)) % (Alignment) == 0)

MaxHeight

#define MaxHeight   2000

MaxScanLines

#define MaxScanLines   1000

MaxSourceHeight

#define MaxSourceHeight   2000

NDEBUG

#define NDEBUG

Definition at line 5 of file bitmap.c.

WIDTH_BYTES_ALIGN32

#define WIDTH_BYTES_ALIGN32	(		cx,
			bpp
	)		((((cx) * (bpp) + 31) & ~31) >> 3)

Definition at line 55 of file bitmap.c.

Function Documentation

BitmapFormat()

ULONG FASTCALL BitmapFormat	(	ULONG	cBits,
		ULONG	iCompression
	)

Definition at line 11 of file bitmap.c.

{
    switch (iCompression)
    {
        case BI_RGB:
            /* Fall through */
        case BI_BITFIELDS:
            if (cBits <= 1) return BMF_1BPP;
            if (cBits <= 4) return BMF_4BPP;
            if (cBits <= 8) return BMF_8BPP;
            if (cBits <= 16) return BMF_16BPP;
            if (cBits <= 24) return BMF_24BPP;
            if (cBits <= 32) return BMF_32BPP;
            return 0;
 
        case BI_RLE4:
            return BMF_4RLE;
 
        case BI_RLE8:
            return BMF_8RLE;
 
        default:
            return 0;
    }
}

Referenced by SetDIBitsToDevice().

ClearBitmapAttributes()

HBITMAP WINAPI ClearBitmapAttributes	(	HBITMAP	hbm,
		DWORD	dwFlags
	)

Definition at line 1199 of file bitmap.c.

{
    if ( dwFlags & ~SC_BB_STOCKOBJ )
    {
        return NULL;
    }
    return NtGdiClearBitmapAttributes( hbm, dwFlags );;
}

Referenced by Test_BitmapAttributes().

CreateBitmap()

HBITMAP WINAPI CreateBitmap	(	INT	Width,
		INT	Height,
		UINT	Planes,
		UINT	BitsPixel,
		CONST VOID *	pUnsafeBits
	)

Definition at line 302 of file bitmap.c.

{
    if (Width && Height)
    {
        return NtGdiCreateBitmap(Width, Height, Planes, BitsPixel, (LPBYTE) pUnsafeBits);
    }
    else
    {
        /* Return 1x1 bitmap */
        return GetStockObject(DEFAULT_BITMAP);
    }
}

CreateBitmapIndirect()

HBITMAP WINAPI CreateBitmapIndirect

(

const BITMAP *

pbm

)

Definition at line 325 of file bitmap.c.

{
    HBITMAP bitmap = NULL;
 
    /* Note windows xp/2003 does not check if pbm is NULL or not */
    if ((pbm->bmWidthBytes != 0) && (!(pbm->bmWidthBytes & 1)))
 
    {
        bitmap = CreateBitmap(pbm->bmWidth, pbm->bmHeight, pbm->bmPlanes, pbm->bmBitsPixel,
            pbm->bmBits);
    }
    else
    {
        SetLastError(ERROR_INVALID_PARAMETER);
    }
 
    return bitmap;
}

CreateCompatibleBitmap()

HBITMAP WINAPI CreateCompatibleBitmap	(	HDC	hDC,
		INT	Width,
		INT	Height
	)

Definition at line 357 of file bitmap.c.

{
    PDC_ATTR pDc_Attr;
 
    if (!GdiGetHandleUserData(hDC, GDI_OBJECT_TYPE_DC, (PVOID) & pDc_Attr))
        return NULL;
 
    if (!Width || !Height)
        return GetStockObject(DEFAULT_BITMAP);
 
    if (!(pDc_Attr->ulDirty_ & DC_DIBSECTION))
    {
        return NtGdiCreateCompatibleBitmap(hDC, Width, Height);
    }
    else
    {
        HBITMAP hBmp = NULL;
        struct
        {
            BITMAP bitmap;
            BITMAPINFOHEADER bmih;
            RGBQUAD rgbquad[256];
        } buffer;
        DIBSECTION* pDIBs = (DIBSECTION*) &buffer;
        BITMAPINFO* pbmi = (BITMAPINFO*) &buffer.bmih;
 
        hBmp = NtGdiGetDCObject(hDC, GDI_OBJECT_TYPE_BITMAP);
 
        if (GetObjectA(hBmp, sizeof(DIBSECTION), pDIBs) != sizeof(DIBSECTION))
            return NULL;
 
        if (pDIBs->dsBm.bmBitsPixel <= 8)
            GetDIBColorTable(hDC, 0, 256, buffer.rgbquad);
 
        pDIBs->dsBmih.biWidth = Width;
        pDIBs->dsBmih.biHeight = Height;
 
        return CreateDIBSection(hDC, pbmi, DIB_RGB_COLORS, NULL, NULL, 0);
    }
    return NULL;
}

CreateDIBitmap()

HBITMAP WINAPI CreateDIBitmap	(	HDC	hDC,
		const BITMAPINFOHEADER *	Header,
		DWORD	Init,
		LPCVOID	Bits,
		const BITMAPINFO *	Data,
		UINT	ColorUse
	)

Definition at line 448 of file bitmap.c.

{
    LONG Width, Height, Compression, DibSize;
    WORD Planes, BitsPerPixel;
//  PDC_ATTR pDc_Attr;
    UINT cjBmpScanSize = 0;
    HBITMAP hBitmap = NULL;
    PBITMAPINFO pbmiConverted;
    UINT cjInfoSize;
 
    /* Convert the BITMAPINFO if it is a COREINFO */
    pbmiConverted = ConvertBitmapInfo(Data, ColorUse, &cjInfoSize, FALSE);
 
    /* Check for CBM_CREATDIB */
    if (Init & CBM_CREATDIB)
    {
        if (cjInfoSize == 0)
        {
            goto Exit;
        }
        else if (Init & CBM_INIT)
        {
            if (Bits == NULL)
            {
                goto Exit;
            }
        }
        else
        {
            Bits = NULL;
        }
 
        /* CBM_CREATDIB needs Data. */
        if (pbmiConverted == NULL)
        {
            DPRINT1("CBM_CREATDIB needs a BITMAPINFO!\n");
            goto Exit;
        }
 
        /* It only works with PAL or RGB */
        if (ColorUse > DIB_PAL_COLORS)
        {
            DPRINT1("Invalid ColorUse: %lu\n", ColorUse);
            GdiSetLastError(ERROR_INVALID_PARAMETER);
            goto Exit;
        }
 
        /* Use the header from the data */
        Header = &Data->bmiHeader;
    }
    else
    {
        if (Init & CBM_INIT)
        {
            if (Bits != NULL)
            {
                if (cjInfoSize == 0)
                {
                    goto Exit;
                }
            }
            else
            {
                Init &= ~CBM_INIT;
            }
        }
    }
 
    /* Header is required */
    if (!Header)
    {
        DPRINT1("Header is NULL\n");
        GdiSetLastError(ERROR_INVALID_PARAMETER);
        goto Exit;
    }
 
    /* Get the bitmap format and dimensions */
    if (DIB_GetBitmapInfo(Header, &Width, &Height, &Planes, &BitsPerPixel, &Compression, &DibSize) == -1)
    {
        DPRINT1("DIB_GetBitmapInfo failed!\n");
        GdiSetLastError(ERROR_INVALID_PARAMETER);
        goto Exit;
    }
 
    /* Check if the Compr is incompatible */
    if ((Compression == BI_JPEG) || (Compression == BI_PNG))
    {
        DPRINT1("Invalid compression: %lu!\n", Compression);
        goto Exit;
    }
 
    /* Only DIB_RGB_COLORS (0), DIB_PAL_COLORS (1) and 2 are valid. */
    if (ColorUse > DIB_PAL_COLORS + 1)
    {
        DPRINT1("Invalid compression: %lu!\n", Compression);
        GdiSetLastError(ERROR_INVALID_PARAMETER);
        goto Exit;
    }
 
    /* If some Bits are given, only DIB_PAL_COLORS and DIB_RGB_COLORS are valid */
    if (Bits && (ColorUse > DIB_PAL_COLORS))
    {
        DPRINT1("Invalid ColorUse: %lu\n", ColorUse);
        GdiSetLastError(ERROR_INVALID_PARAMETER);
        goto Exit;
    }
 
    /* Negative width is not allowed */
    if (Width < 0)
    {
        DPRINT1("Negative width: %li\n", Width);
        goto Exit;
    }
 
    /* Top-down DIBs have a negative height. */
    Height = abs(Height);
 
// For Icm support.
// GdiGetHandleUserData(hdc, GDI_OBJECT_TYPE_DC, (PVOID)&pDc_Attr))
 
    cjBmpScanSize = GdiGetBitmapBitsSize(pbmiConverted);
 
    DPRINT("pBMI %p, Size bpp %u, dibsize %d, Conv %u, BSS %u\n",
           Data, BitsPerPixel, DibSize, cjInfoSize, cjBmpScanSize);
 
    if (!Width || !Height)
    {
        hBitmap = GetStockObject(DEFAULT_BITMAP);
    }
    else
    {
        hBitmap = NtGdiCreateDIBitmapInternal(hDC,
                                              Width,
                                              Height,
                                              Init,
                                              (LPBYTE)Bits,
                                              (LPBITMAPINFO)pbmiConverted,
                                              ColorUse,
                                              cjInfoSize,
                                              cjBmpScanSize,
                                              0, 0);
    }
 
Exit:
    /* Cleanup converted BITMAPINFO */
    if ((pbmiConverted != NULL) && (pbmiConverted != Data))
    {
        RtlFreeHeap(RtlGetProcessHeap(), 0, pbmiConverted);
    }
 
    return hBitmap;
}

CreateDIBSection()

HBITMAP WINAPI CreateDIBSection	(	HDC	hDC,
		CONST BITMAPINFO *	BitmapInfo,
		UINT	Usage,
		VOID **	Bits,
		HANDLE	hSection,
		DWORD	dwOffset
	)

Definition at line 245 of file bitmap.c.

{
    PBITMAPINFO pConvertedInfo;
    UINT ConvertedInfoSize;
    HBITMAP hBitmap = NULL;
    PVOID bmBits = NULL;
 
    pConvertedInfo = ConvertBitmapInfo(BitmapInfo,
                                       Usage,
                                       &ConvertedInfoSize,
                                       FALSE);
    if (pConvertedInfo)
    {
        // Verify header due to converted may == info.
        if (pConvertedInfo->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER))
        {
            if (pConvertedInfo->bmiHeader.biCompression == BI_JPEG ||
                pConvertedInfo->bmiHeader.biCompression == BI_PNG)
            {
                SetLastError(ERROR_INVALID_PARAMETER);
                return NULL;
            }
        }
        hBitmap = NtGdiCreateDIBSection(hDC,
                                        hSection,
                                        dwOffset,
                                        pConvertedInfo,
                                        Usage,
                                        ConvertedInfoSize,
                                        0, // fl
                                        0, // dwColorSpace
                                        &bmBits);
        if (!hBitmap)
            bmBits = NULL;
 
        if (BitmapInfo != pConvertedInfo)
            RtlFreeHeap(RtlGetProcessHeap(), 0, pConvertedInfo);
    }
 
    if (Bits)
        *Bits = bmBits;
 
    return hBitmap;
}

Referenced by alpha_blend_hdc_pixels(), alpha_blend_image(), ARGB2BMP(), BITMAP_CopyImage(), BITMAP_LoadImageW(), BitmapFromClipboardDIB(), ConvertBitmapTo32Bpp(), ConvertToBlackAndWhite(), Create24BppBitmap(), Create32BitHBITMAP(), create_bitmap(), create_dib(), create_dib_section(), create_hatch_bitmap(), create_render_dc(), create_test_bitmap(), create_test_icon(), CreateCompatibleBitmap(), CreateDIBWithProperties(), CreateFrameBufferBitmap(), ATL::CImage::CreateInternal(), CShellLink::CreateShortcutIcon(), CreateStarBitmap(), draw_graphics(), DrawDibBegin(), DrawShadowText(), GdipCreateBitmapFromScan0(), GdipCreateHBITMAPFromBitmap(), GdipDrawImagePointsRect(), GdipGetDC(), get_bitmap_info(), ImageList_CreateImage(), Imm32LoadBitmapFromBytes(), InitBitmap(), InitLogo(), InitPerBitDepth(), IntCreate32BppBitmap(), mi_paint_rect(), mstsc_ProtocolIOThread(), OLEPictureImpl_LoadWICSource(), PaintCells(), PlayEnhMetaFileRecord(), CUIFBitmapDC::SetDIB(), START_TEST(), test_32bit_ddb(), test_alpha_hdc(), test_BitBlt(), test_bitmap_colors(), test_bitmap_font_glyph_index(), test_bitmap_rendering(), test_bitmapinfoheadersize(), test_boundsrect(), test_clipping(), test_color_table(), test_CopyImage_Bitmap(), test_CreateIcon(), test_data_handles(), test_device_caps(), test_dib_formats(), test_DIB_PAL_COLORS(), Test_Dibsection(), Test_DIBSectionEntry(), test_dibsections(), test_DrawDib_sizeimage(), test_DrawIcon(), test_DrawIconEx(), test_DrawState(), test_emf_BitBlt(), test_GdiAlphaBlend(), test_GdiGradientFill(), test_GdipCreateBitmapFromHBITMAP(), test_GetCursorFrameInfo(), Test_GetDIBColorTable(), test_GetDIBits_BI_BITFIELDS(), test_GetDIBits_scanlines(), test_GetDIBits_selected_DIB(), test_GetDIBits_top_down(), test_hdc_caching(), test_Image_StretchMode(), test_ImageList_DrawIndirect(), Test_MaskBlt_16bpp(), Test_MaskBlt_1bpp(), Test_MaskBlt_32bpp(), Test_MaskBlt_Brush(), test_mono_dibsection(), Test_NtGdiDoPalette_SetDIBColorTable(), test_palette_brush(), test_path_state(), test_pattern_brush(), Test_SelectDIBSection(), Test_SetDIBits(), test_SetDIBits(), test_SetDIBits_RLE4(), test_SetDIBits_RLE8(), test_SetDIBitsToDevice(), test_SetDIBitsToDevice_RLE8(), Test_SetPixel_PAL(), test_simple_graphics(), Test_SrcMono(), test_StretchBlt(), test_StretchBlt_TopDownOptions(), test_StretchDIBits(), test_WICCreateBitmapFromSectionEx(), UXTHEME_DrawThemePartToDib(), and WinGCreateBitmap().

CreateDiscardableBitmap()

HBITMAP WINAPI CreateDiscardableBitmap	(	HDC	hDC,
		INT	Width,
		INT	Height
	)

Definition at line 347 of file bitmap.c.

{
    return CreateCompatibleBitmap(hDC, Width, Height);
}

DIB_BitmapInfoSize()

INT FASTCALL DIB_BitmapInfoSize	(	const BITMAPINFO *	info,
		WORD	coloruse,
		BOOL	max
	)

Definition at line 65 of file bitmap.c.

{
    unsigned int colors, size, masks = 0;
 
    if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
    {
        const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *) info;
        size = sizeof(BITMAPCOREHEADER);
        if (core->bcBitCount <= 8)
        {
            colors = 1 << core->bcBitCount;
            if (coloruse == DIB_RGB_COLORS)
                size += colors * sizeof(RGBTRIPLE);
            else
                size += colors * sizeof(WORD);
        }
        return size;
    }
    else /* assume BITMAPINFOHEADER */
    {
        colors = max ? (1 << info->bmiHeader.biBitCount) : info->bmiHeader.biClrUsed;
        if (colors > 256)
            colors = 256;
        if (!colors && (info->bmiHeader.biBitCount <= 8))
            colors = 1 << info->bmiHeader.biBitCount;
        if (info->bmiHeader.biCompression == BI_BITFIELDS)
            masks = 3;
        size = max(info->bmiHeader.biSize, sizeof(BITMAPINFOHEADER) + masks * sizeof(DWORD));
        return size + colors * ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
    }
}

Referenced by GetDIBits(), IntSynthesizeBitmap(), and IntSynthesizeDib().

DIB_BitmapMaxBitsSize()

UINT FASTCALL DIB_BitmapMaxBitsSize	(	PBITMAPINFO	Info,
		UINT	ScanLines
	)

Definition at line 107 of file bitmap.c.

{
    UINT Ret;
 
    if (!Info)
        return 0;
 
    if (Info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
    {
        PBITMAPCOREHEADER Core = (PBITMAPCOREHEADER) Info;
        Ret = WIDTH_BYTES_ALIGN32(Core->bcWidth * Core->bcPlanes,
                Core->bcBitCount) * ScanLines;
    }
    else /* assume BITMAPINFOHEADER */
    {
        if ((Info->bmiHeader.biCompression == BI_RGB) || (Info->bmiHeader.biCompression == BI_BITFIELDS))
        {
            Ret = WIDTH_BYTES_ALIGN32(
                    Info->bmiHeader.biWidth * Info->bmiHeader.biPlanes,
                    Info->bmiHeader.biBitCount) * ScanLines;
        }
        else
        {
            Ret = Info->bmiHeader.biSizeImage;
        }
    }
    return Ret;
}

Referenced by GetDIBits(), and SetDIBitsToDevice().

DIB_GetBitmapInfo()

INT WINAPI DIB_GetBitmapInfo	(	const BITMAPINFOHEADER *	header,
		PLONG	width,
		PLONG	height,
		PWORD	planes,
		PWORD	bpp,
		PLONG	compr,
		PLONG	size
	)

Definition at line 145 of file bitmap.c.

{
    if (header->biSize == sizeof(BITMAPCOREHEADER))
    {
        BITMAPCOREHEADER *core = (BITMAPCOREHEADER *) header;
        *width = core->bcWidth;
        *height = core->bcHeight;
        *planes = core->bcPlanes;
        *bpp = core->bcBitCount;
        *compr = 0;
        *size = 0;
        return 0;
    }
 
    if (header->biSize == sizeof(BITMAPINFOHEADER))
    {
        *width = header->biWidth;
        *height = header->biHeight;
        *planes = header->biPlanes;
        *bpp = header->biBitCount;
        *compr = header->biCompression;
        *size = header->biSizeImage;
        return 1;
    }
 
    if (header->biSize == sizeof(BITMAPV4HEADER))
    {
        BITMAPV4HEADER *v4hdr = (BITMAPV4HEADER *) header;
        *width = v4hdr->bV4Width;
        *height = v4hdr->bV4Height;
        *planes = v4hdr->bV4Planes;
        *bpp = v4hdr->bV4BitCount;
        *compr = v4hdr->bV4V4Compression;
        *size = v4hdr->bV4SizeImage;
        return 4;
    }
 
    if (header->biSize == sizeof(BITMAPV5HEADER))
    {
        BITMAPV5HEADER *v5hdr = (BITMAPV5HEADER *) header;
        *width = v5hdr->bV5Width;
        *height = v5hdr->bV5Height;
        *planes = v5hdr->bV5Planes;
        *bpp = v5hdr->bV5BitCount;
        *compr = v5hdr->bV5Compression;
        *size = v5hdr->bV5SizeImage;
        return 5;
    }
    DPRINT("(%lu): wrong size for header\n", header->biSize);
    return -1;
}

Referenced by CreateDIBitmap().

GdiGetBitmapBitsSize()

int WINAPI GdiGetBitmapBitsSize

(

BITMAPINFO *

lpbmi

)

Definition at line 209 of file bitmap.c.

{
    UINT Ret;
 
    if (!lpbmi)
        return 0;
 
    if (lpbmi->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
    {
        PBITMAPCOREHEADER Core = (PBITMAPCOREHEADER) lpbmi;
        Ret =
        WIDTH_BYTES_ALIGN32(Core->bcWidth * Core->bcPlanes,
                Core->bcBitCount) * Core->bcHeight;
    }
    else /* assume BITMAPINFOHEADER */
    {
        if (!(lpbmi->bmiHeader.biCompression) || (lpbmi->bmiHeader.biCompression == BI_BITFIELDS))
        {
            Ret = WIDTH_BYTES_ALIGN32(
                    lpbmi->bmiHeader.biWidth * lpbmi->bmiHeader.biPlanes,
                    lpbmi->bmiHeader.biBitCount) * abs(lpbmi->bmiHeader.biHeight);
        }
        else
        {
            Ret = lpbmi->bmiHeader.biSizeImage;
        }
    }
    return Ret;
}

Referenced by ConvertBitmapInfo(), CreateDIBitmap(), and StretchDIBits().

GetBitmapAttributes()

DWORD WINAPI GetBitmapAttributes

(

HBITMAP

hbm

)

Definition at line 1171 of file bitmap.c.

{
    if ( GDI_HANDLE_IS_STOCKOBJ(hbm) )
    {
        return SC_BB_STOCKOBJ;
    }
    return 0;
}

Referenced by Test_BitmapAttributes().

GetDIBits()

INT WINAPI GetDIBits	(	HDC	hDC,
		HBITMAP	hbmp,
		UINT	uStartScan,
		UINT	cScanLines,
		LPVOID	lpvBits,
		LPBITMAPINFO	lpbmi,
		UINT	uUsage
	)

Definition at line 404 of file bitmap.c.

{
    UINT cjBmpScanSize;
    UINT cjInfoSize;
 
    if (!hDC || !GdiValidateHandle((HGDIOBJ) hDC) || !lpbmi)
    {
        GdiSetLastError(ERROR_INVALID_PARAMETER);
        return 0;
    }
 
    cjBmpScanSize = DIB_BitmapMaxBitsSize(lpbmi, cScanLines);
    /* Caller must provide maximum size possible */
    cjInfoSize = DIB_BitmapInfoSize(lpbmi, uUsage, TRUE);
 
    if (lpvBits)
    {
        if (lpbmi->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER))
        {
            if (lpbmi->bmiHeader.biCompression == BI_JPEG
                || lpbmi->bmiHeader.biCompression == BI_PNG)
            {
                SetLastError(ERROR_INVALID_PARAMETER);
                return 0;
            }
        }
    }
 
    return NtGdiGetDIBitsInternal(hDC, hbmp, uStartScan, cScanLines, lpvBits, lpbmi, uUsage,
        cjBmpScanSize, cjInfoSize);
}

SetBitmapAttributes()

HBITMAP WINAPI SetBitmapAttributes	(	HBITMAP	hbm,
		DWORD	dwFlags
	)

Definition at line 1185 of file bitmap.c.

{
    if ( dwFlags & ~SC_BB_STOCKOBJ )
    {
        return NULL;
    }
    return NtGdiSetBitmapAttributes( hbm, dwFlags );
}

Referenced by Test_BitmapAttributes().

SetDIBits()

INT WINAPI SetDIBits	(	HDC	hDC,
		HBITMAP	hBitmap,
		UINT	uStartScan,
		UINT	cScanLines,
		CONST VOID *	lpvBits,
		CONST BITMAPINFO *	lpbmi,
		UINT	fuColorUse
	)

Definition at line 612 of file bitmap.c.

{
    HDC hDCc, SavehDC, nhDC;
    DWORD dwWidth, dwHeight;
    HGDIOBJ hOldBitmap;
    HPALETTE hPal = NULL;
    INT LinesCopied = 0;
    BOOL newDC = FALSE;
 
    if (fuColorUse != DIB_RGB_COLORS && fuColorUse != DIB_PAL_COLORS)
        return 0;
 
    if (!lpvBits || (GDI_HANDLE_GET_TYPE(hBitmap) != GDI_OBJECT_TYPE_BITMAP))
        return 0;
 
    if (lpbmi->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER))
    {
        if (lpbmi->bmiHeader.biCompression == BI_JPEG
            || lpbmi->bmiHeader.biCompression == BI_PNG)
        {
            SetLastError(ERROR_INVALID_PARAMETER);
            return 0;
        }
    }
 
    if (lpbmi->bmiHeader.biCompression == BI_BITFIELDS)
    {
        DWORD *masks = (DWORD *)lpbmi->bmiColors;
        if (!masks[0] || !masks[1] || !masks[2])
        {
            SetLastError(ERROR_INVALID_PARAMETER);
            return 0;
        }
    }
 
    hDCc = NtGdiGetDCforBitmap(hBitmap); // hDC can be NULL, so, get it from the bitmap.
    SavehDC = hDCc;
    if (!hDCc) // No DC associated with bitmap, Clone or Create one.
    {
        nhDC = CreateCompatibleDC(hDC);
        if (!nhDC)
            return 0;
        newDC = TRUE;
        SavehDC = nhDC;
    }
    else if (!SaveDC(hDCc))
        return 0;
 
    hOldBitmap = SelectObject(SavehDC, hBitmap);
 
    if (hOldBitmap)
    {
        if (hDC)
            hPal = SelectPalette(SavehDC, (HPALETTE) GetCurrentObject(hDC, OBJ_PAL), FALSE);
 
        if (lpbmi->bmiHeader.biSize < sizeof(BITMAPINFOHEADER))
        {
            PBITMAPCOREINFO pbci = (PBITMAPCOREINFO) lpbmi;
            dwWidth = pbci->bmciHeader.bcWidth;
            dwHeight = pbci->bmciHeader.bcHeight;
        }
        else
        {
            dwWidth = lpbmi->bmiHeader.biWidth;
            dwHeight = abs(lpbmi->bmiHeader.biHeight);
        }
 
        LinesCopied = SetDIBitsToDevice(SavehDC, 0, 0, dwWidth, dwHeight, 0, 0, uStartScan,
            cScanLines, (void *) lpvBits, (LPBITMAPINFO) lpbmi, fuColorUse);
 
        if (hDC)
            SelectPalette(SavehDC, hPal, FALSE);
 
        SelectObject(SavehDC, hOldBitmap);
    }
 
    if (newDC)
        DeleteDC(SavehDC);
    else
        RestoreDC(SavehDC, -1);
 
    return LinesCopied;
}

SetDIBitsToDevice()

INT WINAPI SetDIBitsToDevice	(	HDC	hdc,
		int	XDest,
		int	YDest,
		DWORD	Width,
		DWORD	Height,
		int	XSrc,
		int	YSrc,
		UINT	StartScan,
		UINT	ScanLines,
		CONST VOID *	Bits,
		CONST BITMAPINFO *	lpbmi,
		UINT	ColorUse
	)

Definition at line 709 of file bitmap.c.

{
    PDC_ATTR pDc_Attr;
    PBITMAPINFO pConvertedInfo;
    UINT ConvertedInfoSize;
    INT LinesCopied = 0;
    UINT cjBmpScanSize = 0;
    BOOL Hit = FALSE;
    PVOID pvSafeBits = (PVOID) Bits;
    UINT bmiHeight;
    BOOL top_down;
    INT src_y = 0;
    ULONG iFormat, cBitsPixel, cjBits, cjWidth;
 
    #define MaxScanLines 1000
    #define MaxHeight 2000
    #define MaxSourceHeight 2000
    #define IS_ALIGNED(Pointer, Alignment) \
        (((ULONG_PTR)(void *)(Pointer)) % (Alignment) == 0)
 
    if (!ScanLines || !lpbmi || !Bits)
        return 0;
 
    DPRINT("ScanLines %d Height %d Width %d biHeight %d biWidth %d\n"
           "    lpbmi '%p' ColorUse '%d' SizeImage '%d' StartScan %d\n"
           "    biCompression '%d' biBitCount '%d'\n",
           ScanLines, Height, Width, lpbmi->bmiHeader.biHeight,
           lpbmi->bmiHeader.biWidth, lpbmi, ColorUse,
           lpbmi->bmiHeader.biSizeImage, StartScan,
           lpbmi->bmiHeader.biCompression, lpbmi->bmiHeader.biBitCount);
 
    if (lpbmi->bmiHeader.biWidth < 0)
        return 0;
 
    if (ColorUse && ColorUse != DIB_PAL_COLORS && ColorUse != DIB_PAL_COLORS + 1)
        return 0;
 
    pConvertedInfo = ConvertBitmapInfo(lpbmi, ColorUse, &ConvertedInfoSize, FALSE);
    if (!pConvertedInfo)
        return 0;
 
    if (ScanLines > MaxScanLines)
    {
        LinesCopied = 0;
        goto Exit;
    }
 
    bmiHeight = abs(pConvertedInfo->bmiHeader.biHeight);
    top_down = (pConvertedInfo->bmiHeader.biHeight < 0);
    if ((StartScan > bmiHeight) && (ScanLines > bmiHeight))
    {
        DPRINT("Returning ScanLines of '%d'\n", ScanLines);
        LinesCopied = ScanLines;
        goto Exit;
    }
 
    if (pConvertedInfo->bmiHeader.biHeight == 0)
    {
        LinesCopied = 0;
        goto Exit;
    }
 
    if (!IS_ALIGNED(Bits, 2) && (ScanLines > Height))
    {
        LinesCopied = 0;
        goto Exit;
    }
 
    /* Below code modeled after Wine's nulldrv_SetDIBitsToDevice */
    if (StartScan <= YSrc + bmiHeight)
    {
        if ((pConvertedInfo->bmiHeader.biCompression == BI_RLE8) ||
            (pConvertedInfo->bmiHeader.biCompression == BI_RLE4))
        {
            StartScan = 0;
            ScanLines = bmiHeight;
        }
        else
        {
            if (StartScan >= bmiHeight)
            {
                LinesCopied = 0;
                goto Exit;
            }
            if (!top_down && ScanLines > bmiHeight - StartScan)
            {
                ScanLines = bmiHeight - StartScan;
            }
            src_y = StartScan + ScanLines - (YSrc + Height);
            if (!top_down)
            {
                /* get rid of unnecessary lines */
                if ((src_y < 0 || src_y >= (INT)ScanLines) &&
                    pConvertedInfo->bmiHeader.biCompression != BI_BITFIELDS)
                {
                    LinesCopied = ScanLines;
                    goto Exit;
                }
                if (YDest >= 0)
                {
                    LinesCopied = ScanLines + StartScan;
                    ScanLines -= src_y;
                }
                else
                {
                    LinesCopied = ScanLines - src_y;
                }
            }
            else if (src_y < 0 || src_y >= (INT)ScanLines)
            {
                if (lpbmi->bmiHeader.biHeight < 0 &&
                    StartScan > MaxScanLines)
                {
                    ScanLines = lpbmi->bmiHeader.biHeight - StartScan;
                }
                DPRINT("Returning ScanLines of '%d'\n", ScanLines);
                LinesCopied = ScanLines;
                goto Exit;
            }
            else
            {
                LinesCopied = ScanLines;
            }
        }
    }
 
    HANDLE_METADC(INT,
                  SetDIBitsToDevice,
                  0,
                  hdc,
                  XDest,
                  YDest,
                  Width,
                  Height,
                  XSrc,
                  YSrc,
                  StartScan,
                  ScanLines,
                  Bits,
                  lpbmi,
                  ColorUse);
 
    // Handle the "Special Case"!
    {
        PLDC pldc;
        ULONG hType = GDI_HANDLE_GET_TYPE(hdc);
        if (hType != GDILoObjType_LO_DC_TYPE && hType != GDILoObjType_LO_METADC16_TYPE)
        {
            pldc = GdiGetLDC(hdc);
            if (pldc)
            {
                if (pldc->Flags & LDC_STARTPAGE) StartPage(hdc);
 
                if (pldc->Flags & LDC_SAPCALLBACK) GdiSAPCallback(pldc);
 
                if (pldc->Flags & LDC_KILL_DOCUMENT)
                {
                    LinesCopied = 0;
                    goto Exit;
                }
            }
            else
            {
                SetLastError(ERROR_INVALID_HANDLE);
                LinesCopied = 0;
                goto Exit;
            }
        }
    }
 
    if ((pConvertedInfo->bmiHeader.biCompression == BI_RLE8) ||
            (pConvertedInfo->bmiHeader.biCompression == BI_RLE4))
    {
        /* For compressed data, we must set the whole thing */
        StartScan = 0;
        ScanLines = pConvertedInfo->bmiHeader.biHeight;
    }
 
    cjBmpScanSize = DIB_BitmapMaxBitsSize((LPBITMAPINFO) lpbmi, ScanLines);
 
    pvSafeBits = RtlAllocateHeap(GetProcessHeap(), 0, cjBmpScanSize);
    if (pvSafeBits)
    {
        _SEH2_TRY
        {
            RtlCopyMemory(pvSafeBits, Bits, cjBmpScanSize);
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            Hit = TRUE;
        }
        _SEH2_END;
 
        if (Hit)
        {
            // We don't die, we continue on with a allocated safe pointer to kernel
            // space.....
 
            if (!IS_ALIGNED(Bits, 2)) // If both Read Exception and mis-aligned
            {
                LinesCopied = 0;
                goto Exit;
            }
 
            DPRINT1("SetDIBitsToDevice fail to read BitMapInfo: %p or Bits: %p & Size: %u\n",
                pConvertedInfo, Bits, cjBmpScanSize);
        }
        DPRINT("SetDIBitsToDevice Allocate Bits %u!!!\n", cjBmpScanSize);
    }
 
    if (!GdiGetHandleUserData(hdc, GDI_OBJECT_TYPE_DC, (PVOID) & pDc_Attr))
    {
        DPRINT1("SetDIBitsToDevice called on invalid DC %p (not owned?)\n", hdc);
        SetLastError(ERROR_INVALID_PARAMETER);
        LinesCopied = 0;
        goto Exit;
    }
 
    /* Calculation of ScanLines for NtGdiSetDIBitsToDeviceInternal */
    if (YDest >= 0)
    {
        ScanLines = min(abs(Height), ScanLines);
        if (YSrc > 0)
            ScanLines += YSrc;
    }
    else
    {
         ScanLines = min(ScanLines,
                         abs(pConvertedInfo->bmiHeader.biHeight) - StartScan);
    }
 
    if (YDest >= 0 && YSrc > 0 && bmiHeight <= MaxHeight)
    {
        ScanLines += YSrc;
    }
 
    /* Find Format from lpbmi which is now pConvertedInfo */
    iFormat = BitmapFormat(pConvertedInfo->bmiHeader.biBitCount,
                           pConvertedInfo->bmiHeader.biCompression);
 
    /* Get bits per pixel from the format */
    cBitsPixel = gajBitsPerFormat[iFormat];
 
    cjWidth = WIDTH_BYTES_ALIGN32(pConvertedInfo->bmiHeader.biWidth, cBitsPixel);
 
    /* Calculate the correct bitmap size in bytes */
    if (!NT_SUCCESS(RtlULongMult(cjWidth, max(ScanLines, LinesCopied), &cjBits)))
    {
        DPRINT1("Overflow calculating size: cjWidth %lu, ScanLines %lu\n",
                cjWidth, max(ScanLines, LinesCopied));
        goto Exit;
    }
 
    /* Make sure the buffer is large enough */
    if (pConvertedInfo->bmiHeader.biSizeImage < cjBits)
    {
        DPRINT("Buffer is too small, required: %lu, got %lu\n",
               cjBits, pConvertedInfo->bmiHeader.biSizeImage);
        if (pConvertedInfo->bmiHeader.biCompression == BI_RGB)
        {
            pConvertedInfo->bmiHeader.biSizeImage = cjBits;
        }
    }
 
    /*
     if ( !pDc_Attr || // DC is Public
     ColorUse == DIB_PAL_COLORS ||
     ((pConvertedInfo->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER)) &&
     (pConvertedInfo->bmiHeader.biCompression == BI_JPEG ||
     pConvertedInfo->bmiHeader.biCompression  == BI_PNG )) )*/
    {
        LinesCopied = NtGdiSetDIBitsToDeviceInternal(hdc, XDest, YDest,
            Width, Height, XSrc, YSrc,
            StartScan, ScanLines, (LPBYTE) pvSafeBits,
            (LPBITMAPINFO) pConvertedInfo, ColorUse,
            cjBmpScanSize, ConvertedInfoSize,
            TRUE,
            NULL);
    }
 
    if (bmiHeight > MaxScanLines)
    {
        LinesCopied = ScanLines;
    }
 
    if (YDest < 0)
    {
        if (top_down)
            LinesCopied = ScanLines;
        else
            LinesCopied = ScanLines - src_y;
    }
 
    if (pConvertedInfo->bmiHeader.biCompression == BI_RLE8 ||
        pConvertedInfo->bmiHeader.biCompression == BI_RLE4)
    {
        LinesCopied = bmiHeight;
    }
 
    if (pConvertedInfo->bmiHeader.biHeight < 0)
    {
        if (pConvertedInfo->bmiHeader.biHeight < -MaxSourceHeight || 
            (YDest >= 0 && src_y < -ScanLines))
        {
            LinesCopied = ScanLines + src_y;
        }
        else
        {
            LinesCopied = ScanLines;
        }
    }
 
Exit:
    if (Bits != pvSafeBits)
        RtlFreeHeap(RtlGetProcessHeap(), 0, pvSafeBits);
    if (lpbmi != pConvertedInfo)
        RtlFreeHeap(RtlGetProcessHeap(), 0, pConvertedInfo);
 
    return LinesCopied;
}

StretchDIBits()

int WINAPI StretchDIBits	(	HDC	hdc,
		int	XDest,
		int	YDest,
		int	nDestWidth,
		int	nDestHeight,
		int	XSrc,
		int	YSrc,
		int	nSrcWidth,
		int	nSrcHeight,
		CONST VOID *	lpBits,
		CONST BITMAPINFO *	lpBitsInfo,
		UINT	iUsage,
		DWORD	dwRop
	)

Definition at line 1047 of file bitmap.c.

{
    PDC_ATTR pDc_Attr;
    PBITMAPINFO pConvertedInfo = NULL;
    UINT ConvertedInfoSize = 0;
    INT LinesCopied = 0;
    UINT cjBmpScanSize = 0;
    PVOID pvSafeBits = NULL;
    BOOL Hit = FALSE;
 
    DPRINT("StretchDIBits %p : %p : %u\n", lpBits, lpBitsInfo, iUsage);
 
    HANDLE_METADC( int,
                   StretchDIBits,
                   0,
                   hdc,
                   XDest,
                   YDest,
                   nDestWidth,
                   nDestHeight,
                   XSrc,
                   YSrc,
                   nSrcWidth,
                   nSrcHeight,
                   lpBits,
                   lpBitsInfo,
                   iUsage,
                   dwRop );
 
    if ( GdiConvertAndCheckDC(hdc) == NULL ) return 0;
 
    pConvertedInfo = ConvertBitmapInfo(lpBitsInfo, iUsage, &ConvertedInfoSize, FALSE);
    if (!pConvertedInfo)
    {
        return 0;
    }
 
    cjBmpScanSize = GdiGetBitmapBitsSize((BITMAPINFO *) pConvertedInfo);
 
    if (lpBits)
    {
        pvSafeBits = RtlAllocateHeap(GetProcessHeap(), 0, cjBmpScanSize);
        if (pvSafeBits)
        {
            _SEH2_TRY
            {
                RtlCopyMemory(pvSafeBits, lpBits, cjBmpScanSize);
            }
            _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
            {
                Hit = TRUE;
            }
            _SEH2_END
 
            if (Hit)
            {
                // We don't die, we continue on with a allocated safe pointer to kernel
                // space.....
                DPRINT1("StretchDIBits fail to read BitMapInfo: %p or Bits: %p & Size: %u\n",
                    pConvertedInfo, lpBits, cjBmpScanSize);
            }
            DPRINT("StretchDIBits Allocate Bits %u!!!\n", cjBmpScanSize);
        }
    }
 
    if (!GdiGetHandleUserData(hdc, GDI_OBJECT_TYPE_DC, (PVOID) & pDc_Attr))
    {
        DPRINT1("StretchDIBits called on invalid DC %p (not owned?)\n", hdc);
        SetLastError(ERROR_INVALID_PARAMETER);
        LinesCopied = 0;
        goto Exit;
    }
    /*
     if ( !pDc_Attr ||
     iUsage == DIB_PAL_COLORS ||
     ((pConvertedInfo->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER)) &&
     (pConvertedInfo->bmiHeader.biCompression == BI_JPEG ||
     pConvertedInfo->bmiHeader.biCompression  == BI_PNG )) )*/
    {
        LinesCopied = NtGdiStretchDIBitsInternal( hdc,
                                                  XDest,
                                                  YDest,
                                                  nDestWidth,
                                                  nDestHeight,
                                                  XSrc,
                                                  YSrc,
                                                  nSrcWidth,
                                                  nSrcHeight,
                                                  pvSafeBits,
                                                  pConvertedInfo,
                                                  (DWORD) iUsage,
                                                  dwRop,
                                                  ConvertedInfoSize,
                                                  cjBmpScanSize,
                                                  NULL );
    }
Exit:
    if (pvSafeBits)
        RtlFreeHeap(RtlGetProcessHeap(), 0, pvSafeBits);
    if (lpBitsInfo != pConvertedInfo)
        RtlFreeHeap(RtlGetProcessHeap(), 0, pConvertedInfo);
 
    return LinesCopied;
}

Variable Documentation

gajBitsPerFormat

UCHAR gajBitsPerFormat[11]

Initial value:

=
{
    0, 
    1, 
    4, 
    8, 
   16, 
   24, 
   32, 
    4, 
    8, 
    0, 
    0, 
}

Definition at line 39 of file bitmap.c.

Referenced by SetDIBitsToDevice().