1053 lines
34 KiB
C
1053 lines
34 KiB
C
/*
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* GDI device-independent bitmaps
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*
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* Copyright 1993,1994 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/*
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Important information:
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* Current Windows versions support two different DIB structures:
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- BITMAPCOREINFO / BITMAPCOREHEADER (legacy structures; used in OS/2)
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- BITMAPINFO / BITMAPINFOHEADER
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Most Windows API functions taking a BITMAPINFO* / BITMAPINFOHEADER* also
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accept the old "core" structures, and so must WINE.
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You can distinguish them by looking at the first member (bcSize/biSize),
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or use the internal function DIB_GetBitmapInfo.
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* The palettes are stored in different formats:
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- BITMAPCOREINFO: Array of RGBTRIPLE
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- BITMAPINFO: Array of RGBQUAD
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* There are even more DIB headers, but they all extend BITMAPINFOHEADER:
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- BITMAPV4HEADER: Introduced in Windows 95 / NT 4.0
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- BITMAPV5HEADER: Introduced in Windows 98 / 2000
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If biCompression is BI_BITFIELDS, the color masks are at the same position
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in all the headers (they start at bmiColors of BITMAPINFOHEADER), because
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the new headers have structure members for the masks.
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* You should never access the color table using the bmiColors member,
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because the passed structure may have one of the extended headers
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mentioned above. Use this to calculate the location:
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BITMAPINFO* info;
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void* colorPtr = (LPBYTE) info + (WORD) info->bmiHeader.biSize;
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* More information:
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Search for "Bitmap Structures" in MSDN
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*/
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include "windef.h"
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#include "winbase.h"
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#include "gdi_private.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(bitmap);
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/***********************************************************************
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* bitmap_info_size
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*
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* Return the size of the bitmap info structure including color table.
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*/
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int bitmap_info_size( const BITMAPINFO * info, WORD coloruse )
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{
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unsigned int colors, size, masks = 0;
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if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
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{
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const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)info;
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colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
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return sizeof(BITMAPCOREHEADER) + colors *
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((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
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}
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else /* assume BITMAPINFOHEADER */
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{
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colors = info->bmiHeader.biClrUsed;
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if (colors > 256) colors = 256;
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if (!colors && (info->bmiHeader.biBitCount <= 8))
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colors = 1 << info->bmiHeader.biBitCount;
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if (info->bmiHeader.biCompression == BI_BITFIELDS) masks = 3;
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size = max( info->bmiHeader.biSize, sizeof(BITMAPINFOHEADER) + masks * sizeof(DWORD) );
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return size + colors * ((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
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}
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}
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/***********************************************************************
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* DIB_GetBitmapInfo
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*
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* Get the info from a bitmap header.
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* Return 0 for COREHEADER, 1 for INFOHEADER, -1 for error.
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*/
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int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, LONG *width,
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LONG *height, WORD *planes, WORD *bpp, DWORD *compr, DWORD *size )
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{
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if (header->biSize == sizeof(BITMAPCOREHEADER))
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{
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const BITMAPCOREHEADER *core = (const BITMAPCOREHEADER *)header;
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*width = core->bcWidth;
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*height = core->bcHeight;
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*planes = core->bcPlanes;
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*bpp = core->bcBitCount;
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*compr = 0;
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*size = 0;
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return 0;
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}
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if (header->biSize >= sizeof(BITMAPINFOHEADER)) /* assume BITMAPINFOHEADER */
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{
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*width = header->biWidth;
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*height = header->biHeight;
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*planes = header->biPlanes;
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*bpp = header->biBitCount;
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*compr = header->biCompression;
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*size = header->biSizeImage;
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return 1;
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}
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ERR("(%d): unknown/wrong size for header\n", header->biSize );
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return -1;
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}
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/* nulldrv fallback implementation using SetDIBits/StretchBlt */
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INT nulldrv_StretchDIBits( PHYSDEV dev, INT xDst, INT yDst, INT widthDst, INT heightDst,
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INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, const void *bits,
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const BITMAPINFO *info, UINT coloruse, DWORD rop )
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{
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DC *dc = get_nulldrv_dc( dev );
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INT ret;
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LONG width, height;
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WORD planes, bpp;
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DWORD compr, size;
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HBITMAP hBitmap;
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HDC hdcMem;
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/* make sure we have a real implementation for StretchBlt and SetDIBits */
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if (GET_DC_PHYSDEV( dc, pStretchBlt ) == dev || GET_DC_PHYSDEV( dc, pSetDIBits ) == dev)
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return 0;
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if (DIB_GetBitmapInfo( &info->bmiHeader, &width, &height, &planes, &bpp, &compr, &size ) == -1)
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return 0;
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if (width < 0) return 0;
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if (xSrc == 0 && ySrc == 0 && widthDst == widthSrc && heightDst == heightSrc &&
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info->bmiHeader.biCompression == BI_RGB)
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{
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/* Windows appears to have a fast case optimization
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* that uses the wrong origin for top-down DIBs */
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if (height < 0 && heightSrc < abs(height)) ySrc = abs(height) - heightSrc;
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if (xDst == 0 && yDst == 0 && info->bmiHeader.biCompression == BI_RGB && rop == SRCCOPY)
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{
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BITMAP bm;
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hBitmap = GetCurrentObject( dev->hdc, OBJ_BITMAP );
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if (GetObjectW( hBitmap, sizeof(bm), &bm ) &&
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bm.bmWidth == widthSrc && bm.bmHeight == heightSrc &&
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bm.bmBitsPixel == bpp && bm.bmPlanes == planes)
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{
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/* fast path */
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return SetDIBits( dev->hdc, hBitmap, 0, height, bits, info, coloruse );
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}
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}
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}
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hdcMem = CreateCompatibleDC( dev->hdc );
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hBitmap = CreateCompatibleBitmap( dev->hdc, width, height );
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SelectObject( hdcMem, hBitmap );
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if (coloruse == DIB_PAL_COLORS)
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SelectPalette( hdcMem, GetCurrentObject( dev->hdc, OBJ_PAL ), FALSE );
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if (info->bmiHeader.biCompression == BI_RLE4 || info->bmiHeader.biCompression == BI_RLE8)
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{
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/* when RLE compression is used, there may be some gaps (ie the DIB doesn't
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* contain all the rectangle described in bmiHeader, but only part of it.
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* This mean that those undescribed pixels must be left untouched.
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* So, we first copy on a memory bitmap the current content of the
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* destination rectangle, blit the DIB bits on top of it - hence leaving
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* the gaps untouched -, and blitting the rectangle back.
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* This insure that gaps are untouched on the destination rectangle
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*/
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StretchBlt( hdcMem, xSrc, abs(height) - heightSrc - ySrc, widthSrc, heightSrc,
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dev->hdc, xDst, yDst, widthDst, heightDst, rop );
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}
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ret = SetDIBits( hdcMem, hBitmap, 0, height, bits, info, coloruse );
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if (ret) StretchBlt( dev->hdc, xDst, yDst, widthDst, heightDst,
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hdcMem, xSrc, abs(height) - heightSrc - ySrc, widthSrc, heightSrc, rop );
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DeleteDC( hdcMem );
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DeleteObject( hBitmap );
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return ret;
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}
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/***********************************************************************
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* StretchDIBits (GDI32.@)
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*/
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INT WINAPI StretchDIBits(HDC hdc, INT xDst, INT yDst, INT widthDst, INT heightDst,
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INT xSrc, INT ySrc, INT widthSrc, INT heightSrc, const void *bits,
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const BITMAPINFO *info, UINT coloruse, DWORD rop )
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{
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DC *dc;
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INT ret = 0;
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if (!bits || !info) return 0;
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if ((dc = get_dc_ptr( hdc )))
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{
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PHYSDEV physdev = GET_DC_PHYSDEV( dc, pStretchDIBits );
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update_dc( dc );
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ret = physdev->funcs->pStretchDIBits( physdev, xDst, yDst, widthDst, heightDst,
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xSrc, ySrc, widthSrc, heightSrc, bits, info, coloruse, rop );
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release_dc_ptr( dc );
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}
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return ret;
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}
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/******************************************************************************
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* SetDIBits [GDI32.@]
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*
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* Sets pixels in a bitmap using colors from DIB.
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*
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* PARAMS
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* hdc [I] Handle to device context
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* hbitmap [I] Handle to bitmap
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* startscan [I] Starting scan line
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* lines [I] Number of scan lines
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* bits [I] Array of bitmap bits
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* info [I] Address of structure with data
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* coloruse [I] Type of color indexes to use
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*
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* RETURNS
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* Success: Number of scan lines copied
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* Failure: 0
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*/
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INT WINAPI SetDIBits( HDC hdc, HBITMAP hbitmap, UINT startscan,
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UINT lines, LPCVOID bits, const BITMAPINFO *info,
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UINT coloruse )
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{
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DC *dc = get_dc_ptr( hdc );
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BOOL delete_hdc = FALSE;
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PHYSDEV physdev;
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BITMAPOBJ *bitmap;
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INT result = 0;
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if (coloruse == DIB_RGB_COLORS && !dc)
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{
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hdc = CreateCompatibleDC(0);
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dc = get_dc_ptr( hdc );
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delete_hdc = TRUE;
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}
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if (!dc) return 0;
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update_dc( dc );
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if (!(bitmap = GDI_GetObjPtr( hbitmap, OBJ_BITMAP )))
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{
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release_dc_ptr( dc );
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if (delete_hdc) DeleteDC(hdc);
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return 0;
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}
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physdev = GET_DC_PHYSDEV( dc, pSetDIBits );
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if (BITMAP_SetOwnerDC( hbitmap, physdev ))
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result = physdev->funcs->pSetDIBits( physdev, hbitmap, startscan, lines, bits, info, coloruse );
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GDI_ReleaseObj( hbitmap );
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release_dc_ptr( dc );
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if (delete_hdc) DeleteDC(hdc);
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return result;
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}
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/***********************************************************************
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* SetDIBitsToDevice (GDI32.@)
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*/
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INT WINAPI SetDIBitsToDevice(HDC hdc, INT xDest, INT yDest, DWORD cx,
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DWORD cy, INT xSrc, INT ySrc, UINT startscan,
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UINT lines, LPCVOID bits, const BITMAPINFO *info,
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UINT coloruse )
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{
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INT ret = 0;
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DC *dc;
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if (!bits) return 0;
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if ((dc = get_dc_ptr( hdc )))
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{
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PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDIBitsToDevice );
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update_dc( dc );
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ret = physdev->funcs->pSetDIBitsToDevice( physdev, xDest, yDest, cx, cy, xSrc,
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ySrc, startscan, lines, bits, info, coloruse );
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release_dc_ptr( dc );
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}
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return ret;
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}
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/***********************************************************************
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* SetDIBColorTable (GDI32.@)
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*/
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UINT WINAPI SetDIBColorTable( HDC hdc, UINT startpos, UINT entries, CONST RGBQUAD *colors )
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{
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DC * dc;
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UINT result = 0;
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BITMAPOBJ * bitmap;
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if (!(dc = get_dc_ptr( hdc ))) return 0;
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if ((bitmap = GDI_GetObjPtr( dc->hBitmap, OBJ_BITMAP )))
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{
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PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDIBColorTable );
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/* Check if currently selected bitmap is a DIB */
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if (bitmap->color_table)
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{
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if (startpos < bitmap->nb_colors)
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{
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if (startpos + entries > bitmap->nb_colors) entries = bitmap->nb_colors - startpos;
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memcpy(bitmap->color_table + startpos, colors, entries * sizeof(RGBQUAD));
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result = entries;
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}
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}
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GDI_ReleaseObj( dc->hBitmap );
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physdev->funcs->pSetDIBColorTable( physdev, startpos, entries, colors );
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}
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release_dc_ptr( dc );
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return result;
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}
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/***********************************************************************
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* GetDIBColorTable (GDI32.@)
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*/
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UINT WINAPI GetDIBColorTable( HDC hdc, UINT startpos, UINT entries, RGBQUAD *colors )
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{
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DC * dc;
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BITMAPOBJ *bitmap;
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UINT result = 0;
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if (!(dc = get_dc_ptr( hdc ))) return 0;
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if ((bitmap = GDI_GetObjPtr( dc->hBitmap, OBJ_BITMAP )))
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{
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/* Check if currently selected bitmap is a DIB */
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if (bitmap->color_table)
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{
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if (startpos < bitmap->nb_colors)
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{
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if (startpos + entries > bitmap->nb_colors) entries = bitmap->nb_colors - startpos;
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memcpy(colors, bitmap->color_table + startpos, entries * sizeof(RGBQUAD));
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result = entries;
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}
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}
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GDI_ReleaseObj( dc->hBitmap );
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}
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release_dc_ptr( dc );
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return result;
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}
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static const RGBQUAD DefLogPaletteQuads[20] = { /* Copy of Default Logical Palette */
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/* rgbBlue, rgbGreen, rgbRed, rgbReserved */
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{ 0x00, 0x00, 0x00, 0x00 },
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{ 0x00, 0x00, 0x80, 0x00 },
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{ 0x00, 0x80, 0x00, 0x00 },
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{ 0x00, 0x80, 0x80, 0x00 },
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{ 0x80, 0x00, 0x00, 0x00 },
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{ 0x80, 0x00, 0x80, 0x00 },
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{ 0x80, 0x80, 0x00, 0x00 },
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{ 0xc0, 0xc0, 0xc0, 0x00 },
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{ 0xc0, 0xdc, 0xc0, 0x00 },
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{ 0xf0, 0xca, 0xa6, 0x00 },
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{ 0xf0, 0xfb, 0xff, 0x00 },
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{ 0xa4, 0xa0, 0xa0, 0x00 },
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{ 0x80, 0x80, 0x80, 0x00 },
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{ 0x00, 0x00, 0xff, 0x00 },
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{ 0x00, 0xff, 0x00, 0x00 },
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{ 0x00, 0xff, 0xff, 0x00 },
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{ 0xff, 0x00, 0x00, 0x00 },
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{ 0xff, 0x00, 0xff, 0x00 },
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{ 0xff, 0xff, 0x00, 0x00 },
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{ 0xff, 0xff, 0xff, 0x00 }
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};
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static const DWORD bit_fields_888[3] = {0xff0000, 0x00ff00, 0x0000ff};
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static const DWORD bit_fields_565[3] = {0xf800, 0x07e0, 0x001f};
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static const DWORD bit_fields_555[3] = {0x7c00, 0x03e0, 0x001f};
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static int fill_query_info( BITMAPINFO *info, BITMAPOBJ *bmp )
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{
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BITMAPINFOHEADER header;
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header.biSize = info->bmiHeader.biSize; /* Ensure we don't overwrite the original size when we copy back */
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header.biWidth = bmp->bitmap.bmWidth;
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header.biHeight = bmp->bitmap.bmHeight;
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header.biPlanes = 1;
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if (bmp->dib)
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{
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header.biBitCount = bmp->dib->dsBm.bmBitsPixel;
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switch (bmp->dib->dsBm.bmBitsPixel)
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{
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case 16:
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case 32:
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header.biCompression = BI_BITFIELDS;
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break;
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default:
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header.biCompression = BI_RGB;
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break;
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}
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}
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else
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{
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header.biCompression = (bmp->bitmap.bmBitsPixel > 8) ? BI_BITFIELDS : BI_RGB;
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header.biBitCount = bmp->bitmap.bmBitsPixel;
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}
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header.biSizeImage = get_dib_image_size( (BITMAPINFO *)&header );
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header.biXPelsPerMeter = 0;
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header.biYPelsPerMeter = 0;
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header.biClrUsed = 0;
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header.biClrImportant = 0;
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if ( info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER) )
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{
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BITMAPCOREHEADER *coreheader = (BITMAPCOREHEADER *)info;
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coreheader->bcWidth = header.biWidth;
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coreheader->bcHeight = header.biHeight;
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coreheader->bcPlanes = header.biPlanes;
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coreheader->bcBitCount = header.biBitCount;
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}
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else
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info->bmiHeader = header;
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return abs(bmp->bitmap.bmHeight);
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}
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/************************************************************************
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* copy_color_info
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*
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* Copy BITMAPINFO color information where dst may be a BITMAPCOREINFO.
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*/
|
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static void copy_color_info(BITMAPINFO *dst, const BITMAPINFO *src, UINT coloruse)
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{
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unsigned int colors = src->bmiHeader.biBitCount > 8 ? 0 : 1 << src->bmiHeader.biBitCount;
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RGBQUAD *src_colors = (RGBQUAD *)((char *)src + src->bmiHeader.biSize);
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assert( src->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER) );
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if (src->bmiHeader.biClrUsed) colors = src->bmiHeader.biClrUsed;
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|
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if (dst->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
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{
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BITMAPCOREINFO *core = (BITMAPCOREINFO *)dst;
|
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if (coloruse == DIB_PAL_COLORS)
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memcpy( core->bmciColors, src_colors, colors * sizeof(WORD) );
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else
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{
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unsigned int i;
|
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for (i = 0; i < colors; i++)
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{
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core->bmciColors[i].rgbtRed = src_colors[i].rgbRed;
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|
core->bmciColors[i].rgbtGreen = src_colors[i].rgbGreen;
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|
core->bmciColors[i].rgbtBlue = src_colors[i].rgbBlue;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
dst->bmiHeader.biClrUsed = src->bmiHeader.biClrUsed;
|
|
dst->bmiHeader.biSizeImage = src->bmiHeader.biSizeImage;
|
|
|
|
if (src->bmiHeader.biCompression == BI_BITFIELDS)
|
|
/* bitfields are always at bmiColors even in larger structures */
|
|
memcpy( dst->bmiColors, src->bmiColors, 3 * sizeof(DWORD) );
|
|
else if (colors)
|
|
{
|
|
void *colorptr = (char *)dst + dst->bmiHeader.biSize;
|
|
unsigned int size;
|
|
|
|
if (coloruse == DIB_PAL_COLORS)
|
|
size = colors * sizeof(WORD);
|
|
else
|
|
size = colors * sizeof(RGBQUAD);
|
|
memcpy( colorptr, src_colors, size );
|
|
}
|
|
}
|
|
}
|
|
|
|
static void fill_default_color_table( BITMAPINFO *info )
|
|
{
|
|
int i;
|
|
|
|
switch (info->bmiHeader.biBitCount)
|
|
{
|
|
case 1:
|
|
info->bmiColors[0].rgbRed = info->bmiColors[0].rgbGreen = info->bmiColors[0].rgbBlue = 0;
|
|
info->bmiColors[0].rgbReserved = 0;
|
|
info->bmiColors[1].rgbRed = info->bmiColors[1].rgbGreen = info->bmiColors[1].rgbBlue = 0xff;
|
|
info->bmiColors[1].rgbReserved = 0;
|
|
break;
|
|
|
|
case 4:
|
|
/* The EGA palette is the first and last 8 colours of the default palette
|
|
with the innermost pair swapped */
|
|
memcpy(info->bmiColors, DefLogPaletteQuads, 7 * sizeof(RGBQUAD));
|
|
memcpy(info->bmiColors + 7, DefLogPaletteQuads + 12, 1 * sizeof(RGBQUAD));
|
|
memcpy(info->bmiColors + 8, DefLogPaletteQuads + 7, 1 * sizeof(RGBQUAD));
|
|
memcpy(info->bmiColors + 9, DefLogPaletteQuads + 13, 7 * sizeof(RGBQUAD));
|
|
break;
|
|
|
|
case 8:
|
|
memcpy(info->bmiColors, DefLogPaletteQuads, 10 * sizeof(RGBQUAD));
|
|
memcpy(info->bmiColors + 246, DefLogPaletteQuads + 10, 10 * sizeof(RGBQUAD));
|
|
for (i = 10; i < 246; i++)
|
|
{
|
|
info->bmiColors[i].rgbRed = (i & 0x07) << 5;
|
|
info->bmiColors[i].rgbGreen = (i & 0x38) << 2;
|
|
info->bmiColors[i].rgbBlue = i & 0xc0;
|
|
info->bmiColors[i].rgbReserved = 0;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
ERR("called with bitcount %d\n", info->bmiHeader.biBitCount);
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
* GetDIBits [GDI32.@]
|
|
*
|
|
* Retrieves bits of bitmap and copies to buffer.
|
|
*
|
|
* RETURNS
|
|
* Success: Number of scan lines copied from bitmap
|
|
* Failure: 0
|
|
*/
|
|
INT WINAPI GetDIBits(
|
|
HDC hdc, /* [in] Handle to device context */
|
|
HBITMAP hbitmap, /* [in] Handle to bitmap */
|
|
UINT startscan, /* [in] First scan line to set in dest bitmap */
|
|
UINT lines, /* [in] Number of scan lines to copy */
|
|
LPVOID bits, /* [out] Address of array for bitmap bits */
|
|
BITMAPINFO * info, /* [out] Address of structure with bitmap data */
|
|
UINT coloruse) /* [in] RGB or palette index */
|
|
{
|
|
DC * dc;
|
|
BITMAPOBJ * bmp;
|
|
int i;
|
|
int bitmap_type;
|
|
LONG width;
|
|
LONG height;
|
|
WORD planes, bpp;
|
|
DWORD compr, size;
|
|
char dst_bmibuf[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )];
|
|
BITMAPINFO *dst_info = (BITMAPINFO *)dst_bmibuf;
|
|
unsigned int colors = 0;
|
|
|
|
if (!info) return 0;
|
|
|
|
bitmap_type = DIB_GetBitmapInfo( &info->bmiHeader, &width, &height, &planes, &bpp, &compr, &size);
|
|
if (bitmap_type == -1)
|
|
{
|
|
ERR("Invalid bitmap format\n");
|
|
return 0;
|
|
}
|
|
if (!(dc = get_dc_ptr( hdc )))
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return 0;
|
|
}
|
|
update_dc( dc );
|
|
if (!(bmp = GDI_GetObjPtr( hbitmap, OBJ_BITMAP )))
|
|
{
|
|
release_dc_ptr( dc );
|
|
return 0;
|
|
}
|
|
|
|
|
|
if (bpp == 0) /* query bitmap info only */
|
|
{
|
|
lines = fill_query_info( info, bmp );
|
|
goto done;
|
|
}
|
|
|
|
/* Since info may be a BITMAPCOREINFO or any of the larger BITMAPINFO structures, we'll use our
|
|
own copy and transfer the colour info back at the end */
|
|
|
|
dst_info->bmiHeader.biSize = sizeof(dst_info->bmiHeader);
|
|
dst_info->bmiHeader.biWidth = width;
|
|
dst_info->bmiHeader.biHeight = height;
|
|
dst_info->bmiHeader.biPlanes = planes;
|
|
dst_info->bmiHeader.biBitCount = bpp;
|
|
dst_info->bmiHeader.biCompression = compr;
|
|
dst_info->bmiHeader.biSizeImage = get_dib_image_size( dst_info );
|
|
dst_info->bmiHeader.biXPelsPerMeter = 0;
|
|
dst_info->bmiHeader.biYPelsPerMeter = 0;
|
|
dst_info->bmiHeader.biClrUsed = 0;
|
|
dst_info->bmiHeader.biClrImportant = 0;
|
|
|
|
switch (bpp)
|
|
{
|
|
case 1:
|
|
case 4:
|
|
case 8:
|
|
{
|
|
colors = 1 << bpp;
|
|
|
|
/* If the bitmap object is a dib section at the
|
|
same color depth then get the color map from it */
|
|
if (bmp->dib && bpp == bmp->dib->dsBm.bmBitsPixel && coloruse == DIB_RGB_COLORS)
|
|
{
|
|
colors = min( colors, bmp->nb_colors );
|
|
if (colors != 1 << bpp) dst_info->bmiHeader.biClrUsed = colors;
|
|
memcpy( dst_info->bmiColors, bmp->color_table, colors * sizeof(RGBQUAD) );
|
|
}
|
|
|
|
/* For color DDBs in native depth (mono DDBs always have a black/white palette):
|
|
Generate the color map from the selected palette. In the DIB_PAL_COLORS
|
|
case we'll fix up the indices after the format conversion. */
|
|
else if ( (bpp > 1 && bpp == bmp->bitmap.bmBitsPixel) || coloruse == DIB_PAL_COLORS )
|
|
{
|
|
PALETTEENTRY palEntry[256];
|
|
|
|
memset( palEntry, 0, sizeof(palEntry) );
|
|
if (!GetPaletteEntries( dc->hPalette, 0, colors, palEntry ))
|
|
{
|
|
lines = 0;
|
|
goto done;
|
|
}
|
|
|
|
for (i = 0; i < colors; i++)
|
|
{
|
|
dst_info->bmiColors[i].rgbRed = palEntry[i].peRed;
|
|
dst_info->bmiColors[i].rgbGreen = palEntry[i].peGreen;
|
|
dst_info->bmiColors[i].rgbBlue = palEntry[i].peBlue;
|
|
dst_info->bmiColors[i].rgbReserved = 0;
|
|
}
|
|
}
|
|
else
|
|
fill_default_color_table( dst_info );
|
|
break;
|
|
}
|
|
|
|
case 15:
|
|
if (dst_info->bmiHeader.biCompression == BI_BITFIELDS)
|
|
memcpy( dst_info->bmiColors, bit_fields_555, sizeof(bit_fields_555) );
|
|
break;
|
|
|
|
case 16:
|
|
if (dst_info->bmiHeader.biCompression == BI_BITFIELDS)
|
|
{
|
|
if (bmp->dib)
|
|
{
|
|
if (bmp->dib->dsBmih.biCompression == BI_BITFIELDS && bmp->dib->dsBmih.biBitCount == bpp)
|
|
memcpy( dst_info->bmiColors, bmp->dib->dsBitfields, 3 * sizeof(DWORD) );
|
|
else
|
|
memcpy( dst_info->bmiColors, bit_fields_555, sizeof(bit_fields_555) );
|
|
}
|
|
else
|
|
memcpy( dst_info->bmiColors, bit_fields_565, sizeof(bit_fields_565) );
|
|
}
|
|
break;
|
|
|
|
case 24:
|
|
case 32:
|
|
if (dst_info->bmiHeader.biCompression == BI_BITFIELDS)
|
|
{
|
|
if (bmp->dib && bmp->dib->dsBmih.biCompression == BI_BITFIELDS && bmp->dib->dsBmih.biBitCount == bpp)
|
|
memcpy( dst_info->bmiColors, bmp->dib->dsBitfields, 3 * sizeof(DWORD) );
|
|
else
|
|
memcpy( dst_info->bmiColors, bit_fields_888, sizeof(bit_fields_888) );
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (bits && lines)
|
|
{
|
|
PHYSDEV physdev;
|
|
RECT rect;
|
|
char src_bmibuf[FIELD_OFFSET( BITMAPINFO, bmiColors[256] )];
|
|
BITMAPINFO *src_info = (BITMAPINFO *)src_bmibuf;
|
|
struct gdi_image_bits src_bits;
|
|
DWORD err;
|
|
|
|
/* FIXME: will need updating once the dib driver has pGetImage. */
|
|
physdev = GET_DC_PHYSDEV( dc, pGetImage );
|
|
|
|
if (!BITMAP_SetOwnerDC( hbitmap, physdev )) lines = 0;
|
|
|
|
rect.left = 0;
|
|
rect.right = min( width, bmp->bitmap.bmWidth );
|
|
|
|
if (startscan >= bmp->bitmap.bmHeight) /* constrain lines to within src bitmap */
|
|
lines = 0;
|
|
else
|
|
lines = min( lines, bmp->bitmap.bmHeight - startscan );
|
|
lines = min( lines, abs(height) ); /* and constrain to within dest bitmap */
|
|
|
|
if (lines == 0) goto done;
|
|
|
|
rect.bottom = bmp->bitmap.bmHeight - startscan;
|
|
rect.top = rect.bottom - lines;
|
|
|
|
err = physdev->funcs->pGetImage( physdev, hbitmap, src_info, &src_bits, &rect );
|
|
|
|
if(err)
|
|
{
|
|
lines = 0;
|
|
goto done;
|
|
}
|
|
|
|
if (src_info->bmiHeader.biBitCount <= 8 && src_info->bmiHeader.biClrUsed == 0)
|
|
{
|
|
if (bmp->dib)
|
|
memcpy( src_info->bmiColors, bmp->color_table, bmp->nb_colors * sizeof(RGBQUAD) );
|
|
else
|
|
fill_default_color_table( src_info );
|
|
}
|
|
|
|
offset_rect( &rect, src_bits.offset, -rect.top );
|
|
|
|
if(dst_info->bmiHeader.biHeight > 0)
|
|
dst_info->bmiHeader.biHeight = lines;
|
|
else
|
|
dst_info->bmiHeader.biHeight = -lines;
|
|
|
|
convert_bitmapinfo( src_info, src_bits.ptr, &rect, dst_info, bits );
|
|
if (src_bits.free) src_bits.free( &src_bits );
|
|
}
|
|
else lines = abs(height);
|
|
|
|
if (coloruse == DIB_PAL_COLORS)
|
|
{
|
|
WORD *index = (WORD *)dst_info->bmiColors;
|
|
for (i = 0; i < colors; i++, index++)
|
|
*index = i;
|
|
}
|
|
|
|
copy_color_info( info, dst_info, coloruse );
|
|
|
|
done:
|
|
release_dc_ptr( dc );
|
|
GDI_ReleaseObj( hbitmap );
|
|
return lines;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* CreateDIBitmap (GDI32.@)
|
|
*
|
|
* Creates a DDB (device dependent bitmap) from a DIB.
|
|
* The DDB will have the same color depth as the reference DC.
|
|
*/
|
|
HBITMAP WINAPI CreateDIBitmap( HDC hdc, const BITMAPINFOHEADER *header,
|
|
DWORD init, LPCVOID bits, const BITMAPINFO *data,
|
|
UINT coloruse )
|
|
{
|
|
HBITMAP handle;
|
|
LONG width;
|
|
LONG height;
|
|
WORD planes, bpp;
|
|
DWORD compr, size;
|
|
|
|
if (!header) return 0;
|
|
|
|
if (DIB_GetBitmapInfo( header, &width, &height, &planes, &bpp, &compr, &size ) == -1) return 0;
|
|
|
|
if (width < 0)
|
|
{
|
|
TRACE("Bitmap has a negative width\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Top-down DIBs have a negative height */
|
|
if (height < 0) height = -height;
|
|
|
|
TRACE("hdc=%p, header=%p, init=%u, bits=%p, data=%p, coloruse=%u (bitmap: width=%d, height=%d, bpp=%u, compr=%u)\n",
|
|
hdc, header, init, bits, data, coloruse, width, height, bpp, compr);
|
|
|
|
if (hdc == NULL)
|
|
handle = CreateBitmap( width, height, 1, 1, NULL );
|
|
else
|
|
handle = CreateCompatibleBitmap( hdc, width, height );
|
|
|
|
if (handle)
|
|
{
|
|
if (init & CBM_INIT)
|
|
{
|
|
if (SetDIBits( hdc, handle, 0, height, bits, data, coloruse ) == 0)
|
|
{
|
|
DeleteObject( handle );
|
|
handle = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
return handle;
|
|
}
|
|
|
|
/* Copy/synthesize RGB palette from BITMAPINFO. Ripped from dlls/winex11.drv/dib.c */
|
|
static void DIB_CopyColorTable( DC *dc, BITMAPOBJ *bmp, WORD coloruse, const BITMAPINFO *info )
|
|
{
|
|
RGBQUAD *colorTable;
|
|
unsigned int colors, i;
|
|
BOOL core_info = info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER);
|
|
|
|
if (core_info)
|
|
{
|
|
colors = 1 << ((const BITMAPCOREINFO*) info)->bmciHeader.bcBitCount;
|
|
}
|
|
else
|
|
{
|
|
colors = info->bmiHeader.biClrUsed;
|
|
if (!colors) colors = 1 << info->bmiHeader.biBitCount;
|
|
}
|
|
|
|
if (colors > 256) {
|
|
ERR("called with >256 colors!\n");
|
|
return;
|
|
}
|
|
|
|
if (!(colorTable = HeapAlloc(GetProcessHeap(), 0, colors * sizeof(RGBQUAD) ))) return;
|
|
|
|
if(coloruse == DIB_RGB_COLORS)
|
|
{
|
|
if (core_info)
|
|
{
|
|
/* Convert RGBTRIPLEs to RGBQUADs */
|
|
for (i=0; i < colors; i++)
|
|
{
|
|
colorTable[i].rgbRed = ((const BITMAPCOREINFO*) info)->bmciColors[i].rgbtRed;
|
|
colorTable[i].rgbGreen = ((const BITMAPCOREINFO*) info)->bmciColors[i].rgbtGreen;
|
|
colorTable[i].rgbBlue = ((const BITMAPCOREINFO*) info)->bmciColors[i].rgbtBlue;
|
|
colorTable[i].rgbReserved = 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
memcpy(colorTable, (const BYTE*) info + (WORD) info->bmiHeader.biSize, colors * sizeof(RGBQUAD));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
PALETTEENTRY entries[256];
|
|
const WORD *index = (const WORD*) ((const BYTE*) info + (WORD) info->bmiHeader.biSize);
|
|
UINT count = GetPaletteEntries( dc->hPalette, 0, colors, entries );
|
|
|
|
for (i = 0; i < colors; i++, index++)
|
|
{
|
|
PALETTEENTRY *entry = &entries[*index % count];
|
|
colorTable[i].rgbRed = entry->peRed;
|
|
colorTable[i].rgbGreen = entry->peGreen;
|
|
colorTable[i].rgbBlue = entry->peBlue;
|
|
colorTable[i].rgbReserved = 0;
|
|
}
|
|
}
|
|
bmp->color_table = colorTable;
|
|
bmp->nb_colors = colors;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* CreateDIBSection (GDI32.@)
|
|
*/
|
|
HBITMAP WINAPI CreateDIBSection(HDC hdc, CONST BITMAPINFO *bmi, UINT usage,
|
|
VOID **bits, HANDLE section, DWORD offset)
|
|
{
|
|
HBITMAP ret = 0;
|
|
DC *dc;
|
|
BOOL bDesktopDC = FALSE;
|
|
DIBSECTION *dib;
|
|
BITMAPOBJ *bmp;
|
|
int bitmap_type;
|
|
LONG width, height;
|
|
WORD planes, bpp;
|
|
DWORD compression, sizeImage;
|
|
void *mapBits = NULL;
|
|
|
|
if(!bmi){
|
|
if(bits) *bits = NULL;
|
|
return NULL;
|
|
}
|
|
|
|
if (((bitmap_type = DIB_GetBitmapInfo( &bmi->bmiHeader, &width, &height,
|
|
&planes, &bpp, &compression, &sizeImage )) == -1))
|
|
return 0;
|
|
|
|
switch (bpp)
|
|
{
|
|
case 16:
|
|
case 32:
|
|
if (compression == BI_BITFIELDS) break;
|
|
/* fall through */
|
|
case 1:
|
|
case 4:
|
|
case 8:
|
|
case 24:
|
|
if (compression == BI_RGB) break;
|
|
/* fall through */
|
|
default:
|
|
WARN( "invalid %u bpp compression %u\n", bpp, compression );
|
|
return 0;
|
|
}
|
|
|
|
if (!(dib = HeapAlloc( GetProcessHeap(), 0, sizeof(*dib) ))) return 0;
|
|
|
|
TRACE("format (%d,%d), planes %d, bpp %d, %s, size %d %s\n",
|
|
width, height, planes, bpp, compression == BI_BITFIELDS? "BI_BITFIELDS" : "BI_RGB",
|
|
sizeImage, usage == DIB_PAL_COLORS? "PAL" : "RGB");
|
|
|
|
dib->dsBm.bmType = 0;
|
|
dib->dsBm.bmWidth = width;
|
|
dib->dsBm.bmHeight = height >= 0 ? height : -height;
|
|
dib->dsBm.bmWidthBytes = get_dib_stride( width, bpp );
|
|
dib->dsBm.bmPlanes = planes;
|
|
dib->dsBm.bmBitsPixel = bpp;
|
|
dib->dsBm.bmBits = NULL;
|
|
|
|
if (!bitmap_type) /* core header */
|
|
{
|
|
/* convert the BITMAPCOREHEADER to a BITMAPINFOHEADER */
|
|
dib->dsBmih.biSize = sizeof(BITMAPINFOHEADER);
|
|
dib->dsBmih.biWidth = width;
|
|
dib->dsBmih.biHeight = height;
|
|
dib->dsBmih.biPlanes = planes;
|
|
dib->dsBmih.biBitCount = bpp;
|
|
dib->dsBmih.biCompression = compression;
|
|
dib->dsBmih.biXPelsPerMeter = 0;
|
|
dib->dsBmih.biYPelsPerMeter = 0;
|
|
dib->dsBmih.biClrUsed = 0;
|
|
dib->dsBmih.biClrImportant = 0;
|
|
}
|
|
else
|
|
{
|
|
/* truncate extended bitmap headers (BITMAPV4HEADER etc.) */
|
|
dib->dsBmih = bmi->bmiHeader;
|
|
dib->dsBmih.biSize = sizeof(BITMAPINFOHEADER);
|
|
}
|
|
|
|
/* set number of entries in bmi.bmiColors table */
|
|
if( bpp <= 8 )
|
|
dib->dsBmih.biClrUsed = 1 << bpp;
|
|
|
|
dib->dsBmih.biSizeImage = dib->dsBm.bmWidthBytes * dib->dsBm.bmHeight;
|
|
|
|
/* set dsBitfields values */
|
|
dib->dsBitfields[0] = dib->dsBitfields[1] = dib->dsBitfields[2] = 0;
|
|
|
|
if((bpp == 15 || bpp == 16) && compression == BI_RGB)
|
|
{
|
|
/* In this case Windows changes biCompression to BI_BITFIELDS,
|
|
however for now we won't do this, as there are a lot
|
|
of places where BI_BITFIELDS is currently unsupported. */
|
|
|
|
/* dib->dsBmih.biCompression = compression = BI_BITFIELDS;*/
|
|
dib->dsBitfields[0] = 0x7c00;
|
|
dib->dsBitfields[1] = 0x03e0;
|
|
dib->dsBitfields[2] = 0x001f;
|
|
}
|
|
else if(compression == BI_BITFIELDS)
|
|
{
|
|
dib->dsBitfields[0] = *(const DWORD *)bmi->bmiColors;
|
|
dib->dsBitfields[1] = *((const DWORD *)bmi->bmiColors + 1);
|
|
dib->dsBitfields[2] = *((const DWORD *)bmi->bmiColors + 2);
|
|
}
|
|
|
|
/* get storage location for DIB bits */
|
|
|
|
if (section)
|
|
{
|
|
SYSTEM_INFO SystemInfo;
|
|
DWORD mapOffset;
|
|
INT mapSize;
|
|
|
|
GetSystemInfo( &SystemInfo );
|
|
mapOffset = offset - (offset % SystemInfo.dwAllocationGranularity);
|
|
mapSize = dib->dsBmih.biSizeImage + (offset - mapOffset);
|
|
mapBits = MapViewOfFile( section, FILE_MAP_ALL_ACCESS, 0, mapOffset, mapSize );
|
|
if (mapBits) dib->dsBm.bmBits = (char *)mapBits + (offset - mapOffset);
|
|
}
|
|
else
|
|
{
|
|
offset = 0;
|
|
dib->dsBm.bmBits = VirtualAlloc( NULL, dib->dsBmih.biSizeImage,
|
|
MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE );
|
|
}
|
|
dib->dshSection = section;
|
|
dib->dsOffset = offset;
|
|
|
|
if (!dib->dsBm.bmBits)
|
|
{
|
|
HeapFree( GetProcessHeap(), 0, dib );
|
|
return 0;
|
|
}
|
|
|
|
/* If the reference hdc is null, take the desktop dc */
|
|
if (hdc == 0)
|
|
{
|
|
hdc = CreateCompatibleDC(0);
|
|
bDesktopDC = TRUE;
|
|
}
|
|
|
|
if (!(dc = get_dc_ptr( hdc ))) goto error;
|
|
|
|
/* create Device Dependent Bitmap and add DIB pointer */
|
|
ret = CreateBitmap( dib->dsBm.bmWidth, dib->dsBm.bmHeight, 1,
|
|
(bpp == 1) ? 1 : GetDeviceCaps(hdc, BITSPIXEL), NULL );
|
|
|
|
if (ret && ((bmp = GDI_GetObjPtr(ret, OBJ_BITMAP))))
|
|
{
|
|
PHYSDEV physdev = GET_DC_PHYSDEV( dc, pCreateDIBSection );
|
|
bmp->dib = dib;
|
|
bmp->funcs = physdev->funcs;
|
|
/* create local copy of DIB palette */
|
|
if (bpp <= 8) DIB_CopyColorTable( dc, bmp, usage, bmi );
|
|
GDI_ReleaseObj( ret );
|
|
|
|
if (!physdev->funcs->pCreateDIBSection( physdev, ret, bmi, usage ))
|
|
{
|
|
DeleteObject( ret );
|
|
ret = 0;
|
|
}
|
|
}
|
|
|
|
release_dc_ptr( dc );
|
|
if (bDesktopDC) DeleteDC( hdc );
|
|
if (ret && bits) *bits = dib->dsBm.bmBits;
|
|
return ret;
|
|
|
|
error:
|
|
if (bDesktopDC) DeleteDC( hdc );
|
|
if (section) UnmapViewOfFile( mapBits );
|
|
else if (!offset) VirtualFree( dib->dsBm.bmBits, 0, MEM_RELEASE );
|
|
HeapFree( GetProcessHeap(), 0, dib );
|
|
return 0;
|
|
}
|