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1062 lines
35 KiB
C
1062 lines
35 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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*/
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#include <stdlib.h>
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#include "winbase.h"
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#include "bitmap.h"
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#include "callback.h"
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#include "gdi.h"
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#include "debugtools.h"
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#include "palette.h"
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DEFAULT_DEBUG_CHANNEL(bitmap);
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/***********************************************************************
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* DIB_GetDIBWidthBytes
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*
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* Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned.
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* http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/struc/src/str01.htm
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*/
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int DIB_GetDIBWidthBytes( int width, int depth )
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{
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int words;
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switch(depth)
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{
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case 1: words = (width + 31) / 32; break;
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case 4: words = (width + 7) / 8; break;
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case 8: words = (width + 3) / 4; break;
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case 15:
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case 16: words = (width + 1) / 2; break;
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case 24: words = (width * 3 + 3)/4; break;
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default:
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WARN("(%d): Unsupported depth\n", depth );
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/* fall through */
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case 32:
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words = width;
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}
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return 4 * words;
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}
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/***********************************************************************
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* DIB_GetDIBImageBytes
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*
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* Return the number of bytes used to hold the image in a DIB bitmap.
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*/
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int DIB_GetDIBImageBytes( int width, int height, int depth )
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{
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return DIB_GetDIBWidthBytes( width, depth ) * abs( height );
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}
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/***********************************************************************
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* DIB_BitmapInfoSize
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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 DIB_BitmapInfoSize( const BITMAPINFO * info, WORD coloruse )
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{
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int colors;
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if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
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{
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BITMAPCOREHEADER *core = (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 && (info->bmiHeader.biBitCount <= 8))
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colors = 1 << info->bmiHeader.biBitCount;
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return sizeof(BITMAPINFOHEADER) + colors *
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((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 1 for INFOHEADER, 0 for COREHEADER, -1 for error.
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*/
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int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, DWORD *width,
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int *height, WORD *bpp, WORD *compr )
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{
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if (header->biSize == sizeof(BITMAPINFOHEADER))
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{
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*width = header->biWidth;
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*height = header->biHeight;
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*bpp = header->biBitCount;
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*compr = header->biCompression;
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return 1;
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}
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if (header->biSize == sizeof(BITMAPCOREHEADER))
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{
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BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)header;
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*width = core->bcWidth;
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*height = core->bcHeight;
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*bpp = core->bcBitCount;
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*compr = 0;
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return 0;
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}
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WARN("(%ld): wrong size for header\n", header->biSize );
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return -1;
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}
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/***********************************************************************
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* StretchDIBits16 (GDI.439)
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*/
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INT16 WINAPI StretchDIBits16(HDC16 hdc, INT16 xDst, INT16 yDst, INT16 widthDst,
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INT16 heightDst, INT16 xSrc, INT16 ySrc, INT16 widthSrc,
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INT16 heightSrc, const VOID *bits,
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const BITMAPINFO *info, UINT16 wUsage, DWORD dwRop )
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{
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return (INT16)StretchDIBits( hdc, xDst, yDst, widthDst, heightDst,
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xSrc, ySrc, widthSrc, heightSrc, bits,
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info, wUsage, dwRop );
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}
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/***********************************************************************
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* StretchDIBits (GDI32.351)
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*/
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INT WINAPI StretchDIBits(HDC hdc, INT xDst, INT yDst, INT widthDst,
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INT heightDst, INT xSrc, INT ySrc, INT widthSrc,
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INT heightSrc, const void *bits,
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const BITMAPINFO *info, UINT wUsage, DWORD dwRop )
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{
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DC *dc = DC_GetDCUpdate( hdc );
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if(!dc) return FALSE;
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if(dc->funcs->pStretchDIBits)
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heightSrc = dc->funcs->pStretchDIBits(dc, xDst, yDst, widthDst,
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heightDst, xSrc, ySrc, widthSrc,
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heightSrc, bits, info, wUsage,
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dwRop);
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else { /* use StretchBlt */
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HBITMAP hBitmap, hOldBitmap;
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HDC hdcMem;
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hdcMem = CreateCompatibleDC( hdc );
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if (info->bmiHeader.biCompression == BI_RLE4 ||
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info->bmiHeader.biCompression == BI_RLE8) {
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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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* Not doing so leads to trashed images (the gaps contain what was on the
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* memory bitmap => generally black or garbage)
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* Unfortunately, RLE DIBs without gaps will be slowed down. But this is
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* another speed vs correctness issue. Anyway, if speed is needed, then the
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* pStretchDIBits function shall be implemented.
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* ericP (2000/09/09)
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*/
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hBitmap = CreateCompatibleBitmap(hdc, info->bmiHeader.biWidth,
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info->bmiHeader.biHeight);
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hOldBitmap = SelectObject( hdcMem, hBitmap );
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/* copy existing bitmap from destination dc */
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StretchBlt( hdcMem, xSrc, abs(info->bmiHeader.biHeight) - heightSrc - ySrc,
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widthSrc, heightSrc, hdc, xDst, yDst, widthDst, heightDst,
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dwRop );
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SetDIBits(hdcMem, hBitmap, 0, info->bmiHeader.biHeight, bits,
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info, DIB_RGB_COLORS);
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} else {
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hBitmap = CreateDIBitmap( hdc, &info->bmiHeader, CBM_INIT,
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bits, info, wUsage );
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hOldBitmap = SelectObject( hdcMem, hBitmap );
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}
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/* Origin for DIBitmap may be bottom left (positive biHeight) or top
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left (negative biHeight) */
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StretchBlt( hdc, xDst, yDst, widthDst, heightDst,
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hdcMem, xSrc, abs(info->bmiHeader.biHeight) - heightSrc - ySrc,
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widthSrc, heightSrc, dwRop );
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SelectObject( hdcMem, hOldBitmap );
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DeleteDC( hdcMem );
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DeleteObject( hBitmap );
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}
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GDI_ReleaseObj( hdc );
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return heightSrc;
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}
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/***********************************************************************
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* SetDIBits16 (GDI.440)
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*/
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INT16 WINAPI SetDIBits16( HDC16 hdc, HBITMAP16 hbitmap, UINT16 startscan,
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UINT16 lines, LPCVOID bits, const BITMAPINFO *info,
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UINT16 coloruse )
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{
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return SetDIBits( hdc, hbitmap, startscan, lines, bits, info, coloruse );
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}
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/******************************************************************************
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* SetDIBits [GDI32.312] 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;
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BITMAPOBJ *bitmap;
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INT result;
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/* Check parameters */
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if (!(dc = DC_GetDCUpdate( hdc ))) return 0;
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if (!(bitmap = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
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{
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GDI_ReleaseObj( hdc );
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return 0;
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}
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result = BITMAP_Driver->pSetDIBits(bitmap, dc, startscan,
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lines, bits, info,
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coloruse, hbitmap);
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GDI_ReleaseObj( hbitmap );
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GDI_ReleaseObj( hdc );
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return result;
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}
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/***********************************************************************
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* SetDIBitsToDevice16 (GDI.443)
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*/
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INT16 WINAPI SetDIBitsToDevice16(HDC16 hdc, INT16 xDest, INT16 yDest, INT16 cx,
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INT16 cy, INT16 xSrc, INT16 ySrc, UINT16 startscan,
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UINT16 lines, LPCVOID bits, const BITMAPINFO *info,
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UINT16 coloruse )
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{
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return SetDIBitsToDevice( hdc, xDest, yDest, cx, cy, xSrc, ySrc,
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startscan, lines, bits, info, coloruse );
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}
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/***********************************************************************
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* SetDIBitsToDevice (GDI32.313)
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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;
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DC *dc;
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if (!(dc = DC_GetDCUpdate( hdc ))) return 0;
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if(dc->funcs->pSetDIBitsToDevice)
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ret = dc->funcs->pSetDIBitsToDevice( dc, xDest, yDest, cx, cy, xSrc,
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ySrc, startscan, lines, bits,
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info, coloruse );
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else {
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FIXME("unimplemented on hdc %08x\n", hdc);
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ret = 0;
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}
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GDI_ReleaseObj( hdc );
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return ret;
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}
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/***********************************************************************
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* SetDIBColorTable16 (GDI.602)
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*/
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UINT16 WINAPI SetDIBColorTable16( HDC16 hdc, UINT16 startpos, UINT16 entries,
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RGBQUAD *colors )
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{
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return SetDIBColorTable( hdc, startpos, entries, colors );
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}
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/***********************************************************************
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* SetDIBColorTable (GDI32.311)
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*/
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UINT WINAPI SetDIBColorTable( HDC hdc, UINT startpos, UINT entries,
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RGBQUAD *colors )
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{
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DC * dc;
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PALETTEENTRY * palEntry;
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PALETTEOBJ * palette;
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RGBQUAD *end;
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if (!(dc = DC_GetDCUpdate( hdc ))) return 0;
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if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->hPalette, PALETTE_MAGIC )))
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{
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GDI_ReleaseObj( hdc );
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return 0;
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}
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/* Transfer color info */
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if (dc->bitsPerPixel <= 8) {
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palEntry = palette->logpalette.palPalEntry + startpos;
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if (startpos + entries > (1 << dc->bitsPerPixel))
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entries = (1 << dc->bitsPerPixel) - startpos;
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if (startpos + entries > palette->logpalette.palNumEntries)
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entries = palette->logpalette.palNumEntries - startpos;
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for (end = colors + entries; colors < end; palEntry++, colors++)
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{
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palEntry->peRed = colors->rgbRed;
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palEntry->peGreen = colors->rgbGreen;
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palEntry->peBlue = colors->rgbBlue;
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}
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} else {
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entries = 0;
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}
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GDI_ReleaseObj( dc->hPalette );
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GDI_ReleaseObj( hdc );
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return entries;
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}
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/***********************************************************************
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* GetDIBColorTable16 (GDI.603)
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*/
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UINT16 WINAPI GetDIBColorTable16( HDC16 hdc, UINT16 startpos, UINT16 entries,
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RGBQUAD *colors )
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{
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return GetDIBColorTable( hdc, startpos, entries, colors );
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}
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/***********************************************************************
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* GetDIBColorTable (GDI32.169)
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*/
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UINT WINAPI GetDIBColorTable( HDC hdc, UINT startpos, UINT entries,
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RGBQUAD *colors )
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{
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DC * dc;
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PALETTEENTRY * palEntry;
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PALETTEOBJ * palette;
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RGBQUAD *end;
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if (!(dc = DC_GetDCUpdate( hdc ))) return 0;
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if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->hPalette, PALETTE_MAGIC )))
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{
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GDI_ReleaseObj( hdc );
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return 0;
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}
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/* Transfer color info */
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if (dc->bitsPerPixel <= 8) {
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palEntry = palette->logpalette.palPalEntry + startpos;
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if (startpos + entries > (1 << dc->bitsPerPixel)) {
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entries = (1 << dc->bitsPerPixel) - startpos;
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}
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for (end = colors + entries; colors < end; palEntry++, colors++)
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{
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colors->rgbRed = palEntry->peRed;
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colors->rgbGreen = palEntry->peGreen;
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colors->rgbBlue = palEntry->peBlue;
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colors->rgbReserved = 0;
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}
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} else {
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entries = 0;
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}
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GDI_ReleaseObj( dc->hPalette );
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GDI_ReleaseObj( hdc );
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return entries;
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}
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/* FIXME the following two structs should be combined with __sysPalTemplate in
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objects/color.c - this should happen after de-X11-ing both of these
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files.
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NB. RGBQUAD and PALETTENTRY have different orderings of red, green
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and blue - sigh */
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static RGBQUAD EGAColors[16] = {
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/* rgbBlue, rgbGreen, rgbRed, rgbReserverd */
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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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{ 0x80, 0x80, 0x80, 0x00 },
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{ 0xc0, 0xc0, 0xc0, 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 RGBQUAD DefLogPalette[20] = { /* Copy of Default Logical Palette */
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/* rgbBlue, rgbGreen, rgbRed, rgbReserverd */
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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, 0xf0, 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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/***********************************************************************
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* GetDIBits16 (GDI.441)
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*/
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INT16 WINAPI GetDIBits16( HDC16 hdc, HBITMAP16 hbitmap, UINT16 startscan,
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UINT16 lines, LPVOID bits, BITMAPINFO * info,
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UINT16 coloruse )
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{
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return GetDIBits( hdc, hbitmap, startscan, lines, bits, info, coloruse );
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}
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|
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/******************************************************************************
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* GetDIBits [GDI32.170] Retrieves bits of bitmap and copies to buffer
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*
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* RETURNS
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* Success: Number of scan lines copied from bitmap
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* Failure: 0
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*
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* http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/func/src/f30_14.htm
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*/
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INT WINAPI GetDIBits(
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HDC hdc, /* [in] Handle to device context */
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HBITMAP hbitmap, /* [in] Handle to bitmap */
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UINT startscan, /* [in] First scan line to set in dest bitmap */
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UINT lines, /* [in] Number of scan lines to copy */
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LPVOID bits, /* [out] Address of array for bitmap bits */
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BITMAPINFO * info, /* [out] Address of structure with bitmap data */
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UINT coloruse) /* [in] RGB or palette index */
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{
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DC * dc;
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BITMAPOBJ * bmp;
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PALETTEENTRY * palEntry;
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PALETTEOBJ * palette;
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int i;
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if (!info) return 0;
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if (!(dc = DC_GetDCUpdate( hdc ))) return 0;
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if (!(bmp = (BITMAPOBJ *)GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
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{
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GDI_ReleaseObj( hdc );
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return 0;
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}
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|
if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->hPalette, PALETTE_MAGIC )))
|
|
{
|
|
GDI_ReleaseObj( hdc );
|
|
GDI_ReleaseObj( hbitmap );
|
|
return 0;
|
|
}
|
|
|
|
/* Transfer color info */
|
|
|
|
if (info->bmiHeader.biBitCount <= 8 && info->bmiHeader.biBitCount > 0 ) {
|
|
|
|
info->bmiHeader.biClrUsed = 0;
|
|
|
|
if(info->bmiHeader.biBitCount >= bmp->bitmap.bmBitsPixel) {
|
|
palEntry = palette->logpalette.palPalEntry;
|
|
for (i = 0; i < (1 << bmp->bitmap.bmBitsPixel); i++, palEntry++) {
|
|
if (coloruse == DIB_RGB_COLORS) {
|
|
info->bmiColors[i].rgbRed = palEntry->peRed;
|
|
info->bmiColors[i].rgbGreen = palEntry->peGreen;
|
|
info->bmiColors[i].rgbBlue = palEntry->peBlue;
|
|
info->bmiColors[i].rgbReserved = 0;
|
|
}
|
|
else ((WORD *)info->bmiColors)[i] = (WORD)i;
|
|
}
|
|
} else {
|
|
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:
|
|
memcpy(info->bmiColors, EGAColors, sizeof(EGAColors));
|
|
break;
|
|
|
|
case 8:
|
|
{
|
|
INT r, g, b;
|
|
RGBQUAD *color;
|
|
|
|
memcpy(info->bmiColors, DefLogPalette,
|
|
10 * sizeof(RGBQUAD));
|
|
memcpy(info->bmiColors + 246, DefLogPalette + 10,
|
|
10 * sizeof(RGBQUAD));
|
|
color = info->bmiColors + 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++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
GDI_ReleaseObj( dc->hPalette );
|
|
|
|
if (bits && lines)
|
|
{
|
|
/* If the bitmap object already have a dib section that contains image data, get the bits from it*/
|
|
if(bmp->dib && bmp->dib->dsBm.bmBitsPixel >= 15 && info->bmiHeader.biBitCount >= 15)
|
|
{
|
|
/*FIXME: Only RGB dibs supported for now */
|
|
int srcwidth = bmp->dib->dsBm.bmWidth, srcwidthb = bmp->dib->dsBm.bmWidthBytes;
|
|
int dstwidthb = DIB_GetDIBWidthBytes( info->bmiHeader.biWidth, info->bmiHeader.biBitCount );
|
|
LPBYTE dbits = bits, sbits = (LPBYTE) bmp->dib->dsBm.bmBits + (startscan * srcwidthb);
|
|
int x, y;
|
|
|
|
if ((info->bmiHeader.biHeight < 0) ^ (bmp->dib->dsBmih.biHeight < 0))
|
|
{
|
|
dbits = (LPBYTE)bits + (dstwidthb * (lines-1));
|
|
dstwidthb = -dstwidthb;
|
|
}
|
|
|
|
switch( info->bmiHeader.biBitCount ) {
|
|
|
|
case 15:
|
|
case 16: /* 16 bpp dstDIB */
|
|
{
|
|
LPWORD dstbits = (LPWORD)dbits;
|
|
WORD rmask = 0x7c00, gmask= 0x03e0, bmask = 0x001f;
|
|
|
|
/* FIXME: BI_BITFIELDS not supported yet */
|
|
|
|
switch(bmp->dib->dsBm.bmBitsPixel) {
|
|
|
|
case 16: /* 16 bpp srcDIB -> 16 bpp dstDIB */
|
|
{
|
|
/* FIXME: BI_BITFIELDS not supported yet */
|
|
for (y = 0; y < lines; y++, dbits+=dstwidthb, sbits+=srcwidthb)
|
|
memcpy(dbits, sbits, srcwidthb);
|
|
}
|
|
break;
|
|
|
|
case 24: /* 24 bpp srcDIB -> 16 bpp dstDIB */
|
|
{
|
|
LPBYTE srcbits = sbits;
|
|
|
|
for( y = 0; y < lines; y++) {
|
|
for( x = 0; x < srcwidth; x++ )
|
|
*dstbits++ = ((*srcbits++ >> 3) & bmask) |
|
|
(((WORD)*srcbits++ << 2) & gmask) |
|
|
(((WORD)*srcbits++ << 7) & rmask);
|
|
dstbits = (LPWORD)(dbits+=dstwidthb);
|
|
srcbits = (sbits += srcwidthb);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 32: /* 32 bpp srcDIB -> 16 bpp dstDIB */
|
|
{
|
|
LPDWORD srcbits = (LPDWORD)sbits;
|
|
DWORD val;
|
|
|
|
for( y = 0; y < lines; y++) {
|
|
for( x = 0; x < srcwidth; x++ ) {
|
|
val = *srcbits++;
|
|
*dstbits++ = (WORD)(((val >> 3) & bmask) | ((val >> 6) & gmask) |
|
|
((val >> 9) & rmask));
|
|
}
|
|
dstbits = (LPWORD)(dbits+=dstwidthb);
|
|
srcbits = (LPDWORD)(sbits+=srcwidthb);
|
|
}
|
|
}
|
|
break;
|
|
|
|
default: /* ? bit bmp -> 16 bit DIB */
|
|
FIXME("15/16 bit DIB %d bit bitmap\n",
|
|
bmp->bitmap.bmBitsPixel);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 24: /* 24 bpp dstDIB */
|
|
{
|
|
LPBYTE dstbits = dbits;
|
|
|
|
switch(bmp->dib->dsBm.bmBitsPixel) {
|
|
|
|
case 16: /* 16 bpp srcDIB -> 24 bpp dstDIB */
|
|
{
|
|
LPWORD srcbits = (LPWORD)sbits;
|
|
WORD val;
|
|
|
|
/* FIXME: BI_BITFIELDS not supported yet */
|
|
for( y = 0; y < lines; y++) {
|
|
for( x = 0; x < srcwidth; x++ ) {
|
|
val = *srcbits++;
|
|
*dstbits++ = (BYTE)(((val << 3) & 0xf8) | ((val >> 2) & 0x07));
|
|
*dstbits++ = (BYTE)(((val >> 2) & 0xf8) | ((val >> 7) & 0x07));
|
|
*dstbits++ = (BYTE)(((val >> 7) & 0xf8) | ((val >> 12) & 0x07));
|
|
}
|
|
dstbits = (LPBYTE)(dbits+=dstwidthb);
|
|
srcbits = (LPWORD)(sbits+=srcwidthb);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 24: /* 24 bpp srcDIB -> 24 bpp dstDIB */
|
|
{
|
|
for (y = 0; y < lines; y++, dbits+=dstwidthb, sbits+=srcwidthb)
|
|
memcpy(dbits, sbits, srcwidthb);
|
|
}
|
|
break;
|
|
|
|
case 32: /* 32 bpp srcDIB -> 24 bpp dstDIB */
|
|
{
|
|
LPBYTE srcbits = (LPBYTE)sbits;
|
|
|
|
for( y = 0; y < lines; y++) {
|
|
for( x = 0; x < srcwidth; x++, srcbits++ ) {
|
|
*dstbits++ = *srcbits++;
|
|
*dstbits++ = *srcbits++;
|
|
*dstbits++ = *srcbits++;
|
|
}
|
|
dstbits=(LPBYTE)(dbits+=dstwidthb);
|
|
srcbits = (LPBYTE)(sbits+=srcwidthb);
|
|
}
|
|
}
|
|
break;
|
|
|
|
default: /* ? bit bmp -> 24 bit DIB */
|
|
FIXME("24 bit DIB %d bit bitmap\n",
|
|
bmp->bitmap.bmBitsPixel);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 32: /* 32 bpp dstDIB */
|
|
{
|
|
LPDWORD dstbits = (LPDWORD)dbits;
|
|
|
|
/* FIXME: BI_BITFIELDS not supported yet */
|
|
|
|
switch(bmp->dib->dsBm.bmBitsPixel) {
|
|
case 16: /* 16 bpp srcDIB -> 32 bpp dstDIB */
|
|
{
|
|
LPWORD srcbits = (LPWORD)sbits;
|
|
DWORD val;
|
|
|
|
/* FIXME: BI_BITFIELDS not supported yet */
|
|
for( y = 0; y < lines; y++) {
|
|
for( x = 0; x < srcwidth; x++ ) {
|
|
val = (DWORD)*srcbits++;
|
|
*dstbits++ = ((val << 3) & 0xf8) | ((val >> 2) & 0x07) |
|
|
((val << 6) & 0xf800) | ((val << 1) & 0x0700) |
|
|
((val << 9) & 0xf80000) | ((val << 4) & 0x070000);
|
|
}
|
|
dstbits=(LPDWORD)(dbits+=dstwidthb);
|
|
srcbits=(LPWORD)(sbits+=srcwidthb);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 24: /* 24 bpp srcDIB -> 32 bpp dstDIB */
|
|
{
|
|
LPBYTE srcbits = sbits;
|
|
|
|
for( y = 0; y < lines; y++) {
|
|
for( x = 0; x < srcwidth; x++, srcbits+=3 )
|
|
*dstbits++ = ((DWORD)*srcbits) & 0x00ffffff;
|
|
dstbits=(LPDWORD)(dbits+=dstwidthb);
|
|
srcbits=(sbits+=srcwidthb);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 32: /* 32 bpp srcDIB -> 16 bpp dstDIB */
|
|
{
|
|
/* FIXME: BI_BITFIELDS not supported yet */
|
|
for (y = 0; y < lines; y++, dbits+=dstwidthb, sbits+=srcwidthb)
|
|
memcpy(dbits, sbits, srcwidthb);
|
|
}
|
|
break;
|
|
|
|
default: /* ? bit bmp -> 16 bit DIB */
|
|
FIXME("15/16 bit DIB %d bit bitmap\n",
|
|
bmp->bitmap.bmBitsPixel);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default: /* ? bit DIB */
|
|
FIXME("Unsupported DIB depth %d\n", info->bmiHeader.biBitCount);
|
|
break;
|
|
}
|
|
}
|
|
/* Otherwise, get bits from the XImage */
|
|
else if(!BITMAP_Driver->pGetDIBits(bmp, dc, startscan, lines, bits, info, coloruse, hbitmap))
|
|
{
|
|
GDI_ReleaseObj( hdc );
|
|
GDI_ReleaseObj( hbitmap );
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
else if( info->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER) )
|
|
{
|
|
/* fill in struct members */
|
|
|
|
if( info->bmiHeader.biBitCount == 0)
|
|
{
|
|
info->bmiHeader.biWidth = bmp->bitmap.bmWidth;
|
|
info->bmiHeader.biHeight = bmp->bitmap.bmHeight;
|
|
info->bmiHeader.biPlanes = 1;
|
|
info->bmiHeader.biBitCount = bmp->bitmap.bmBitsPixel;
|
|
info->bmiHeader.biSizeImage =
|
|
DIB_GetDIBImageBytes( bmp->bitmap.bmWidth,
|
|
bmp->bitmap.bmHeight,
|
|
bmp->bitmap.bmBitsPixel );
|
|
info->bmiHeader.biCompression = 0;
|
|
}
|
|
else
|
|
{
|
|
info->bmiHeader.biSizeImage = DIB_GetDIBImageBytes(
|
|
info->bmiHeader.biWidth,
|
|
info->bmiHeader.biHeight,
|
|
info->bmiHeader.biBitCount );
|
|
}
|
|
}
|
|
|
|
TRACE("biSizeImage = %ld, biWidth = %ld, biHeight = %ld\n",
|
|
info->bmiHeader.biSizeImage, info->bmiHeader.biWidth,
|
|
info->bmiHeader.biHeight);
|
|
|
|
GDI_ReleaseObj( hdc );
|
|
GDI_ReleaseObj( hbitmap );
|
|
|
|
return lines;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* CreateDIBitmap16 (GDI.442)
|
|
*/
|
|
HBITMAP16 WINAPI CreateDIBitmap16( HDC16 hdc, const BITMAPINFOHEADER * header,
|
|
DWORD init, LPCVOID bits, const BITMAPINFO * data,
|
|
UINT16 coloruse )
|
|
{
|
|
return CreateDIBitmap( hdc, header, init, bits, data, coloruse );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* CreateDIBitmap (GDI32.37)
|
|
*/
|
|
HBITMAP WINAPI CreateDIBitmap( HDC hdc, const BITMAPINFOHEADER *header,
|
|
DWORD init, LPCVOID bits, const BITMAPINFO *data,
|
|
UINT coloruse )
|
|
{
|
|
HBITMAP handle;
|
|
BOOL fColor;
|
|
DWORD width;
|
|
int height;
|
|
WORD bpp;
|
|
WORD compr;
|
|
|
|
if (DIB_GetBitmapInfo( header, &width, &height, &bpp, &compr ) == -1) return 0;
|
|
if (height < 0) height = -height;
|
|
|
|
/* 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))
|
|
{
|
|
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));
|
|
}
|
|
/* Note : If the first color of the colormap is white
|
|
followed by black, we have to create a color bitmap.
|
|
If we don't the white will be displayed in black later on!*/
|
|
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
|
|
{
|
|
WARN("(%ld): wrong size for data\n",
|
|
data->bmiHeader.biSize );
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Now create the bitmap */
|
|
|
|
if (fColor)
|
|
{
|
|
HDC tmpdc = CreateDCA( "DISPLAY", NULL, NULL, NULL );
|
|
handle = CreateCompatibleBitmap( tmpdc, width, height );
|
|
DeleteDC( tmpdc );
|
|
}
|
|
else handle = CreateBitmap( width, height, 1, 1, NULL );
|
|
|
|
if (!handle) return 0;
|
|
|
|
if (init == CBM_INIT)
|
|
SetDIBits( hdc, handle, 0, height, bits, data, coloruse );
|
|
return handle;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* CreateDIBSection16 (GDI.489)
|
|
*/
|
|
HBITMAP16 WINAPI CreateDIBSection16 (HDC16 hdc, BITMAPINFO *bmi, UINT16 usage,
|
|
SEGPTR *bits, HANDLE section,
|
|
DWORD offset)
|
|
{
|
|
HBITMAP16 hbitmap = 0;
|
|
DC *dc;
|
|
BOOL bDesktopDC = FALSE;
|
|
|
|
/* If the reference hdc is null, take the desktop dc */
|
|
if (hdc == 0)
|
|
{
|
|
hdc = CreateCompatibleDC(0);
|
|
bDesktopDC = TRUE;
|
|
}
|
|
|
|
if ((dc = DC_GetDCPtr( hdc )))
|
|
{
|
|
hbitmap = dc->funcs->pCreateDIBSection16(dc, bmi, usage, bits, section, offset, 0);
|
|
GDI_ReleaseObj(hdc);
|
|
}
|
|
|
|
if (bDesktopDC)
|
|
DeleteDC(hdc);
|
|
|
|
return hbitmap;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DIB_CreateDIBSection
|
|
*/
|
|
HBITMAP DIB_CreateDIBSection(HDC hdc, BITMAPINFO *bmi, UINT usage,
|
|
LPVOID *bits, HANDLE section,
|
|
DWORD offset, DWORD ovr_pitch)
|
|
{
|
|
HBITMAP hbitmap = 0;
|
|
DC *dc;
|
|
BOOL bDesktopDC = FALSE;
|
|
|
|
/* If the reference hdc is null, take the desktop dc */
|
|
if (hdc == 0)
|
|
{
|
|
hdc = CreateCompatibleDC(0);
|
|
bDesktopDC = TRUE;
|
|
}
|
|
|
|
if ((dc = DC_GetDCPtr( hdc )))
|
|
{
|
|
hbitmap = dc->funcs->pCreateDIBSection(dc, bmi, usage, bits, section, offset, ovr_pitch);
|
|
GDI_ReleaseObj(hdc);
|
|
}
|
|
|
|
if (bDesktopDC)
|
|
DeleteDC(hdc);
|
|
|
|
return hbitmap;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* CreateDIBSection (GDI32.36)
|
|
*/
|
|
HBITMAP WINAPI CreateDIBSection(HDC hdc, BITMAPINFO *bmi, UINT usage,
|
|
LPVOID *bits, HANDLE section,
|
|
DWORD offset)
|
|
{
|
|
return DIB_CreateDIBSection(hdc, bmi, usage, bits, section, offset, 0);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DIB_DeleteDIBSection
|
|
*/
|
|
void DIB_DeleteDIBSection( BITMAPOBJ *bmp )
|
|
{
|
|
if (bmp && bmp->dib)
|
|
{
|
|
DIBSECTION *dib = bmp->dib;
|
|
|
|
if (dib->dsBm.bmBits)
|
|
{
|
|
if (dib->dshSection)
|
|
UnmapViewOfFile(dib->dsBm.bmBits);
|
|
else if (!dib->dsOffset)
|
|
VirtualFree(dib->dsBm.bmBits, 0L, MEM_RELEASE );
|
|
}
|
|
|
|
BITMAP_Driver->pDeleteDIBSection(bmp);
|
|
|
|
HeapFree(GetProcessHeap(), 0, dib);
|
|
bmp->dib = NULL;
|
|
}
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DIB_CreateDIBFromBitmap
|
|
* Allocates a packed DIB and copies the bitmap data into it.
|
|
*/
|
|
HGLOBAL DIB_CreateDIBFromBitmap(HDC hdc, HBITMAP hBmp)
|
|
{
|
|
BITMAPOBJ *pBmp = NULL;
|
|
HGLOBAL hPackedDIB = 0;
|
|
LPBYTE pPackedDIB = NULL;
|
|
LPBITMAPINFOHEADER pbmiHeader = NULL;
|
|
unsigned int width, height, depth, cDataSize = 0, cPackedSize = 0,
|
|
OffsetBits = 0, nLinesCopied = 0;
|
|
|
|
/* Get a pointer to the BITMAPOBJ structure */
|
|
pBmp = (BITMAPOBJ *)GDI_GetObjPtr( hBmp, BITMAP_MAGIC );
|
|
if (!pBmp) return hPackedDIB;
|
|
|
|
/* Get the bitmap dimensions */
|
|
width = pBmp->bitmap.bmWidth;
|
|
height = pBmp->bitmap.bmHeight;
|
|
depth = pBmp->bitmap.bmBitsPixel;
|
|
|
|
/*
|
|
* A packed DIB contains a BITMAPINFO structure followed immediately by
|
|
* an optional color palette and the pixel data.
|
|
*/
|
|
|
|
/* Calculate the size of the packed DIB */
|
|
cDataSize = DIB_GetDIBImageBytes( width, height, depth );
|
|
cPackedSize = sizeof(BITMAPINFOHEADER)
|
|
+ ( (depth <= 8) ? (sizeof(RGBQUAD) * (1 << depth)) : 0 )
|
|
+ cDataSize;
|
|
/* Get the offset to the bits */
|
|
OffsetBits = cPackedSize - cDataSize;
|
|
|
|
/* Allocate the packed DIB */
|
|
TRACE("\tAllocating packed DIB of size %d\n", cPackedSize);
|
|
hPackedDIB = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE /*| GMEM_ZEROINIT*/,
|
|
cPackedSize );
|
|
if ( !hPackedDIB )
|
|
{
|
|
WARN("Could not allocate packed DIB!\n");
|
|
goto END;
|
|
}
|
|
|
|
/* A packed DIB starts with a BITMAPINFOHEADER */
|
|
pPackedDIB = (LPBYTE)GlobalLock(hPackedDIB);
|
|
pbmiHeader = (LPBITMAPINFOHEADER)pPackedDIB;
|
|
|
|
/* Init the BITMAPINFOHEADER */
|
|
pbmiHeader->biSize = sizeof(BITMAPINFOHEADER);
|
|
pbmiHeader->biWidth = width;
|
|
pbmiHeader->biHeight = height;
|
|
pbmiHeader->biPlanes = 1;
|
|
pbmiHeader->biBitCount = depth;
|
|
pbmiHeader->biCompression = BI_RGB;
|
|
pbmiHeader->biSizeImage = 0;
|
|
pbmiHeader->biXPelsPerMeter = pbmiHeader->biYPelsPerMeter = 0;
|
|
pbmiHeader->biClrUsed = 0;
|
|
pbmiHeader->biClrImportant = 0;
|
|
|
|
/* Retrieve the DIB bits from the bitmap and fill in the
|
|
* DIB color table if present */
|
|
|
|
nLinesCopied = GetDIBits(hdc, /* Handle to device context */
|
|
hBmp, /* Handle to bitmap */
|
|
0, /* First scan line to set in dest bitmap */
|
|
height, /* Number of scan lines to copy */
|
|
pPackedDIB + OffsetBits, /* [out] Address of array for bitmap bits */
|
|
(LPBITMAPINFO) pbmiHeader, /* [out] Address of BITMAPINFO structure */
|
|
0); /* RGB or palette index */
|
|
GlobalUnlock(hPackedDIB);
|
|
|
|
/* Cleanup if GetDIBits failed */
|
|
if (nLinesCopied != height)
|
|
{
|
|
TRACE("\tGetDIBits returned %d. Actual lines=%d\n", nLinesCopied, height);
|
|
GlobalFree(hPackedDIB);
|
|
hPackedDIB = 0;
|
|
}
|
|
|
|
END:
|
|
GDI_ReleaseObj( hBmp );
|
|
return hPackedDIB;
|
|
}
|