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Sweden-Number/objects/dib.c

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/*
* GDI device-independent bitmaps
*
* Copyright 1993,1994 Alexandre Julliard
*
* TODO: Still contains some references to X11DRV.
*/
#include <stdlib.h>
#include "dc.h"
#include "bitmap.h"
#include "callback.h"
#include "palette.h"
#include "color.h"
#include "global.h"
#include "debug.h"
#include "x11drv.h"
/***********************************************************************
* DIB_GetDIBWidthBytes
*
* Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned.
* http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/struc/src/str01.htm
*/
int DIB_GetDIBWidthBytes( int width, int depth )
{
int words;
switch(depth)
{
case 1: words = (width + 31) / 32; break;
case 4: words = (width + 7) / 8; break;
case 8: words = (width + 3) / 4; break;
case 15:
case 16: words = (width + 1) / 2; break;
case 24: words = (width * 3 + 3)/4; break;
default:
WARN(bitmap, "(%d): Unsupported depth\n", depth );
/* fall through */
case 32:
words = width;
}
return 4 * words;
}
/***********************************************************************
* DIB_BitmapInfoSize
*
* Return the size of the bitmap info structure including color table.
*/
int DIB_BitmapInfoSize( BITMAPINFO * info, WORD coloruse )
{
int colors;
if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
{
BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)info;
colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
return sizeof(BITMAPCOREHEADER) + colors *
((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
}
else /* assume BITMAPINFOHEADER */
{
colors = info->bmiHeader.biClrUsed;
if (!colors && (info->bmiHeader.biBitCount <= 8))
colors = 1 << info->bmiHeader.biBitCount;
return sizeof(BITMAPINFOHEADER) + colors *
((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
}
}
/***********************************************************************
* DIB_GetBitmapInfo
*
* Get the info from a bitmap header.
* Return 1 for INFOHEADER, 0 for COREHEADER, -1 for error.
*/
int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, DWORD *width,
int *height, WORD *bpp, WORD *compr )
{
if (header->biSize == sizeof(BITMAPINFOHEADER))
{
*width = header->biWidth;
*height = header->biHeight;
*bpp = header->biBitCount;
*compr = header->biCompression;
return 1;
}
if (header->biSize == sizeof(BITMAPCOREHEADER))
{
BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)header;
*width = core->bcWidth;
*height = core->bcHeight;
*bpp = core->bcBitCount;
*compr = 0;
return 0;
}
WARN(bitmap, "(%ld): wrong size for header\n", header->biSize );
return -1;
}
/***********************************************************************
* StretchDIBits16 (GDI.439)
*/
INT16 WINAPI StretchDIBits16(HDC16 hdc, INT16 xDst, INT16 yDst, INT16 widthDst,
INT16 heightDst, INT16 xSrc, INT16 ySrc, INT16 widthSrc,
INT16 heightSrc, const VOID *bits,
const BITMAPINFO *info, UINT16 wUsage, DWORD dwRop )
{
return (INT16)StretchDIBits32( hdc, xDst, yDst, widthDst, heightDst,
xSrc, ySrc, widthSrc, heightSrc, bits,
info, wUsage, dwRop );
}
/***********************************************************************
* StretchDIBits32 (GDI32.351)
*/
INT32 WINAPI StretchDIBits32(HDC32 hdc, INT32 xDst, INT32 yDst, INT32 widthDst,
INT32 heightDst, INT32 xSrc, INT32 ySrc, INT32 widthSrc,
INT32 heightSrc, const void *bits,
const BITMAPINFO *info, UINT32 wUsage, DWORD dwRop )
{
DC *dc = DC_GetDCPtr( hdc );
if(!dc) return FALSE;
if(dc->funcs->pStretchDIBits)
return dc->funcs->pStretchDIBits(dc, xDst, yDst, widthDst,
heightDst, xSrc, ySrc, widthSrc,
heightSrc, bits, info, wUsage,
dwRop);
else { /* use StretchBlt32 */
HBITMAP32 hBitmap, hOldBitmap;
HDC32 hdcMem;
hBitmap = CreateDIBitmap32( hdc, &info->bmiHeader, CBM_INIT,
bits, info, wUsage );
hdcMem = CreateCompatibleDC32( hdc );
hOldBitmap = SelectObject32( hdcMem, hBitmap );
/* Origin for DIBitmap is bottom left ! */
StretchBlt32( hdc, xDst, yDst, widthDst, heightDst,
hdcMem, xSrc, info->bmiHeader.biHeight - heightSrc - ySrc,
widthSrc, heightSrc, dwRop );
SelectObject32( hdcMem, hOldBitmap );
DeleteDC32( hdcMem );
DeleteObject32( hBitmap );
return heightSrc;
}
}
/***********************************************************************
* SetDIBits16 (GDI.440)
*/
INT16 WINAPI SetDIBits16( HDC16 hdc, HBITMAP16 hbitmap, UINT16 startscan,
UINT16 lines, LPCVOID bits, const BITMAPINFO *info,
UINT16 coloruse )
{
return SetDIBits32( hdc, hbitmap, startscan, lines, bits, info, coloruse );
}
/******************************************************************************
* SetDIBits32 [GDI32.312] Sets pixels in a bitmap using colors from DIB
*
* PARAMS
* hdc [I] Handle to device context
* hbitmap [I] Handle to bitmap
* startscan [I] Starting scan line
* lines [I] Number of scan lines
* bits [I] Array of bitmap bits
* info [I] Address of structure with data
* coloruse [I] Type of color indexes to use
*
* RETURNS
* Success: Number of scan lines copied
* Failure: 0
*/
INT32 WINAPI SetDIBits32( HDC32 hdc, HBITMAP32 hbitmap, UINT32 startscan,
UINT32 lines, LPCVOID bits, const BITMAPINFO *info,
UINT32 coloruse )
{
DIB_SETIMAGEBITS_DESCR descr;
BITMAPOBJ * bmp;
int height, tmpheight;
INT32 result;
/* Check parameters */
descr.dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!descr.dc)
{
descr.dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!descr.dc) return 0;
}
if (!(bmp = (BITMAPOBJ *)GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
{
GDI_HEAP_UNLOCK( hdc );
return 0;
}
if (DIB_GetBitmapInfo( &info->bmiHeader, &descr.infoWidth, &height,
&descr.infoBpp, &descr.compression ) == -1)
{
GDI_HEAP_UNLOCK( hbitmap );
GDI_HEAP_UNLOCK( hdc );
return 0;
}
tmpheight = height;
if (height < 0) height = -height;
if (!lines || (startscan >= height))
{
GDI_HEAP_UNLOCK( hbitmap );
GDI_HEAP_UNLOCK( hdc );
return 0;
}
if (startscan + lines > height) lines = height - startscan;
if (descr.infoBpp <= 8)
{
descr.colorMap = X11DRV_DIB_BuildColorMap( descr.dc, coloruse,
bmp->bitmap.bmBitsPixel,
info, &descr.nColorMap );
if (!descr.colorMap)
{
GDI_HEAP_UNLOCK( hbitmap );
GDI_HEAP_UNLOCK( hdc );
return 0;
}
} else
descr.colorMap = 0;
/* HACK for now */
if(!bmp->DDBitmap)
X11DRV_CreateBitmap(hbitmap);
{
X11DRV_PHYSBITMAP *pbitmap = bmp->DDBitmap->physBitmap;
descr.bits = bits;
descr.image = NULL;
descr.lines = tmpheight >= 0 ? lines : -lines;
descr.depth = bmp->bitmap.bmBitsPixel;
descr.drawable = pbitmap->pixmap;
descr.gc = BITMAP_GC(bmp);
descr.xSrc = 0;
descr.ySrc = 0;
descr.xDest = 0;
descr.yDest = height - startscan - lines;
descr.width = bmp->bitmap.bmWidth;
descr.height = lines;
}
EnterCriticalSection( &X11DRV_CritSection );
result = CALL_LARGE_STACK( X11DRV_DIB_SetImageBits, &descr );
LeaveCriticalSection( &X11DRV_CritSection );
if (descr.colorMap) HeapFree(GetProcessHeap(), 0, descr.colorMap);
GDI_HEAP_UNLOCK( hdc );
GDI_HEAP_UNLOCK( hbitmap );
return result;
}
/***********************************************************************
* SetDIBitsToDevice16 (GDI.443)
*/
INT16 WINAPI SetDIBitsToDevice16(HDC16 hdc, INT16 xDest, INT16 yDest, INT16 cx,
INT16 cy, INT16 xSrc, INT16 ySrc, UINT16 startscan,
UINT16 lines, LPCVOID bits, const BITMAPINFO *info,
UINT16 coloruse )
{
return SetDIBitsToDevice32( hdc, xDest, yDest, cx, cy, xSrc, ySrc,
startscan, lines, bits, info, coloruse );
}
/***********************************************************************
* SetDIBitsToDevice32 (GDI32.313)
*/
INT32 WINAPI SetDIBitsToDevice32(HDC32 hdc, INT32 xDest, INT32 yDest, DWORD cx,
DWORD cy, INT32 xSrc, INT32 ySrc, UINT32 startscan,
UINT32 lines, LPCVOID bits, const BITMAPINFO *info,
UINT32 coloruse )
{
INT32 ret;
DC *dc;
if (!(dc = DC_GetDCPtr( hdc ))) return 0;
if(dc->funcs->pSetDIBitsToDevice)
ret = dc->funcs->pSetDIBitsToDevice( dc, xDest, yDest, cx, cy, xSrc,
ySrc, startscan, lines, bits,
info, coloruse );
else {
FIXME(bitmap, "unimplemented on hdc %08x\n", hdc);
ret = 0;
}
GDI_HEAP_UNLOCK( hdc );
return ret;
}
/***********************************************************************
* SetDIBColorTable16 (GDI.602)
*/
UINT16 WINAPI SetDIBColorTable16( HDC16 hdc, UINT16 startpos, UINT16 entries,
RGBQUAD *colors )
{
return SetDIBColorTable32( hdc, startpos, entries, colors );
}
/***********************************************************************
* SetDIBColorTable32 (GDI32.311)
*/
UINT32 WINAPI SetDIBColorTable32( HDC32 hdc, UINT32 startpos, UINT32 entries,
RGBQUAD *colors )
{
DC * dc;
PALETTEENTRY * palEntry;
PALETTEOBJ * palette;
RGBQUAD *end;
dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return 0;
}
if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->w.hPalette, PALETTE_MAGIC )))
{
return 0;
}
/* Transfer color info */
if (dc->w.bitsPerPixel <= 8) {
palEntry = palette->logpalette.palPalEntry + startpos;
if (startpos + entries > (1 << dc->w.bitsPerPixel)) {
entries = (1 << dc->w.bitsPerPixel) - startpos;
}
for (end = colors + entries; colors < end; palEntry++, colors++)
{
palEntry->peRed = colors->rgbRed;
palEntry->peGreen = colors->rgbGreen;
palEntry->peBlue = colors->rgbBlue;
}
} else {
entries = 0;
}
GDI_HEAP_UNLOCK( dc->w.hPalette );
return entries;
}
/***********************************************************************
* GetDIBColorTable16 (GDI.603)
*/
UINT16 WINAPI GetDIBColorTable16( HDC16 hdc, UINT16 startpos, UINT16 entries,
RGBQUAD *colors )
{
return GetDIBColorTable32( hdc, startpos, entries, colors );
}
/***********************************************************************
* GetDIBColorTable32 (GDI32.169)
*/
UINT32 WINAPI GetDIBColorTable32( HDC32 hdc, UINT32 startpos, UINT32 entries,
RGBQUAD *colors )
{
DC * dc;
PALETTEENTRY * palEntry;
PALETTEOBJ * palette;
RGBQUAD *end;
dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return 0;
}
if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->w.hPalette, PALETTE_MAGIC )))
{
return 0;
}
/* Transfer color info */
if (dc->w.bitsPerPixel <= 8) {
palEntry = palette->logpalette.palPalEntry + startpos;
if (startpos + entries > (1 << dc->w.bitsPerPixel)) {
entries = (1 << dc->w.bitsPerPixel) - startpos;
}
for (end = colors + entries; colors < end; palEntry++, colors++)
{
colors->rgbRed = palEntry->peRed;
colors->rgbGreen = palEntry->peGreen;
colors->rgbBlue = palEntry->peBlue;
colors->rgbReserved = 0;
}
} else {
entries = 0;
}
GDI_HEAP_UNLOCK( dc->w.hPalette );
return entries;
}
/***********************************************************************
* GetDIBits16 (GDI.441)
*/
INT16 WINAPI GetDIBits16( HDC16 hdc, HBITMAP16 hbitmap, UINT16 startscan,
UINT16 lines, LPSTR bits, BITMAPINFO * info,
UINT16 coloruse )
{
return GetDIBits32( hdc, hbitmap, startscan, lines, bits, info, coloruse );
}
/******************************************************************************
* GetDIBits32 [GDI32.170] Retrieves bits of bitmap and copies to buffer
*
* RETURNS
* Success: Number of scan lines copied from bitmap
* Failure: 0
*
* http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/func/src/f30_14.htm
*/
INT32 WINAPI GetDIBits32(
HDC32 hdc, /* [in] Handle to device context */
HBITMAP32 hbitmap, /* [in] Handle to bitmap */
UINT32 startscan, /* [in] First scan line to set in dest bitmap */
UINT32 lines, /* [in] Number of scan lines to copy */
LPSTR bits, /* [out] Address of array for bitmap bits */
BITMAPINFO * info, /* [out] Address of structure with bitmap data */
UINT32 coloruse) /* [in] RGB or palette index */
{
DC * dc;
BITMAPOBJ * bmp;
PALETTEENTRY * palEntry;
PALETTEOBJ * palette;
XImage * bmpImage;
int i, x, y;
if (!lines) return 0;
dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return 0;
}
if (!(bmp = (BITMAPOBJ *)GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
return 0;
if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->w.hPalette, PALETTE_MAGIC )))
{
GDI_HEAP_UNLOCK( hbitmap );
return 0;
}
/* Transfer color info (FIXME) */
if (info && (info->bmiHeader.biBitCount <= 8) &&
(bmp->bitmap.bmBitsPixel <= 8))
{
int colors = 1 << info->bmiHeader.biBitCount;
info->bmiHeader.biClrUsed = 0;
palEntry = palette->logpalette.palPalEntry;
for (i = 0; i < colors; 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;
}
}
if (bits)
{
BYTE* bbits = bits;
int pad, yend, xend = bmp->bitmap.bmWidth;
TRACE(bitmap, "%u scanlines of (%i,%i) -> (%i,%i) starting from %u\n",
lines, bmp->bitmap.bmWidth, bmp->bitmap.bmHeight,
(int)info->bmiHeader.biWidth, (int)info->bmiHeader.biHeight, startscan );
/* adjust number of scanlines to copy */
if( lines > info->bmiHeader.biHeight ) lines = info->bmiHeader.biHeight;
yend = startscan + lines;
if( startscan >= bmp->bitmap.bmHeight )
{
GDI_HEAP_UNLOCK( hbitmap );
GDI_HEAP_UNLOCK( dc->w.hPalette );
return FALSE;
}
if( yend > bmp->bitmap.bmHeight ) yend = bmp->bitmap.bmHeight;
/* adjust scanline width */
pad = info->bmiHeader.biWidth - bmp->bitmap.bmWidth;
if( pad < 0 )
{
/* bitmap is wider than DIB, copy only a part */
pad = 0;
xend = info->bmiHeader.biWidth;
}
/* HACK for now */
if(!bmp->DDBitmap)
X11DRV_CreateBitmap(hbitmap);
EnterCriticalSection( &X11DRV_CritSection );
bmpImage = (XImage *)CALL_LARGE_STACK( X11DRV_BITMAP_GetXImage, bmp );
switch( info->bmiHeader.biBitCount )
{
case 8:
/* pad up to 32 bit */
pad += (4 - (info->bmiHeader.biWidth & 3)) & 3;
for( y = yend - 1; (int)y >= (int)startscan; y-- )
{
for( x = 0; x < xend; x++ )
*bbits++ = XGetPixel( bmpImage, x, y );
bbits += pad;
}
break;
case 1:
pad += ((32 - (info->bmiHeader.biWidth & 31)) / 8) & 3;
for( y = yend - 1; (int)y >= (int)startscan; y-- )
{
for( x = 0; x < xend; x++ ) {
if (!(x&7)) *bbits = 0;
*bbits |= XGetPixel( bmpImage, x, y)<<(7-(x&7));
if ((x&7)==7) bbits++;
}
bbits += pad;
}
break;
case 4:
pad += ((8 - (info->bmiHeader.biWidth & 7)) / 2) & 3;
for( y = yend - 1; (int)y >= (int)startscan; y-- )
{
for( x = 0; x < xend; x++ ) {
if (!(x&1)) *bbits = 0;
*bbits |= XGetPixel( bmpImage, x, y)<<(4*(1-(x&1)));
if ((x&1)==1) bbits++;
}
bbits += pad;
}
break;
case 15:
case 16:
pad += (4 - ((info->bmiHeader.biWidth*2) & 3)) & 3;
for( y = yend - 1; (int)y >= (int)startscan; y-- )
{
for( x = 0; x < xend; x++ ) {
unsigned long pixel=XGetPixel( bmpImage, x, y);
*bbits++ = pixel & 0xff;
*bbits++ = (pixel >> 8) & 0xff;
}
bbits += pad;
}
break;
case 24:
pad += (4 - ((info->bmiHeader.biWidth*3) & 3)) & 3;
for( y = yend - 1; (int)y >= (int)startscan; y-- )
{
for( x = 0; x < xend; x++ ) {
unsigned long pixel=XGetPixel( bmpImage, x, y);
*bbits++ = (pixel >>16) & 0xff;
*bbits++ = (pixel >> 8) & 0xff;
*bbits++ = pixel & 0xff;
}
bbits += pad;
}
break;
case 32:
for( y = yend - 1; (int)y >= (int)startscan; y-- )
{
for( x = 0; x < xend; x++ ) {
unsigned long pixel=XGetPixel( bmpImage, x, y);
*bbits++ = (pixel >>16) & 0xff;
*bbits++ = (pixel >> 8) & 0xff;
*bbits++ = pixel & 0xff;
}
}
break;
default:
WARN(bitmap,"Unsupported depth %d\n",
info->bmiHeader.biBitCount);
break;
}
XDestroyImage( bmpImage );
LeaveCriticalSection( &X11DRV_CritSection );
info->bmiHeader.biCompression = 0;
}
else if( info->bmiHeader.biSize >= sizeof(BITMAPINFOHEADER) )
{
/* fill in struct members */
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 = bmp->bitmap.bmHeight *
DIB_GetDIBWidthBytes( bmp->bitmap.bmWidth,
bmp->bitmap.bmBitsPixel );
info->bmiHeader.biCompression = 0;
}
GDI_HEAP_UNLOCK( hbitmap );
GDI_HEAP_UNLOCK( dc->w.hPalette );
return lines;
}
/***********************************************************************
* CreateDIBitmap16 (GDI.442)
*/
HBITMAP16 WINAPI CreateDIBitmap16( HDC16 hdc, const BITMAPINFOHEADER * header,
DWORD init, LPCVOID bits, const BITMAPINFO * data,
UINT16 coloruse )
{
return CreateDIBitmap32( hdc, header, init, bits, data, coloruse );
}
/***********************************************************************
* CreateDIBitmap32 (GDI32.37)
*/
HBITMAP32 WINAPI CreateDIBitmap32( HDC32 hdc, const BITMAPINFOHEADER *header,
DWORD init, LPCVOID bits, const BITMAPINFO *data,
UINT32 coloruse )
{
HBITMAP32 handle;
BOOL32 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 either black or 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 );
if ((col == RGB(0,0,0)) || (col == RGB(0xff,0xff,0xff)))
{
rgb++;
col = RGB( rgb->rgbRed, rgb->rgbGreen, rgb->rgbBlue );
fColor = ((col != RGB(0,0,0)) && (col != RGB(0xff,0xff,0xff)));
}
else fColor = TRUE;
}
else if (data->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
{
RGBTRIPLE *rgb = ((BITMAPCOREINFO *)data)->bmciColors;
DWORD col = RGB( rgb->rgbtRed, rgb->rgbtGreen, rgb->rgbtBlue );
if ((col == RGB(0,0,0)) || (col == RGB(0xff,0xff,0xff)))
{
rgb++;
col = RGB( rgb->rgbtRed, rgb->rgbtGreen, rgb->rgbtBlue );
fColor = ((col != RGB(0,0,0)) && (col != RGB(0xff,0xff,0xff)));
}
else fColor = TRUE;
}
else
{
WARN(bitmap, "(%ld): wrong size for data\n",
data->bmiHeader.biSize );
return 0;
}
}
/* Now create the bitmap */
handle = fColor ? CreateBitmap32( width, height, 1, screenDepth, NULL ) :
CreateBitmap32( width, height, 1, 1, NULL );
if (!handle) return 0;
if (init == CBM_INIT)
SetDIBits32( hdc, handle, 0, height, bits, data, coloruse );
return handle;
}
/***********************************************************************
* DIB_DoProtectDIBSection
*/
static void DIB_DoProtectDIBSection( BITMAPOBJ *bmp, DWORD new_prot )
{
DIBSECTION *dib = &bmp->dib->dibSection;
INT32 effHeight = dib->dsBm.bmHeight >= 0? dib->dsBm.bmHeight
: -dib->dsBm.bmHeight;
INT32 totalSize = dib->dsBmih.biSizeImage? dib->dsBmih.biSizeImage
: dib->dsBm.bmWidthBytes * effHeight;
DWORD old_prot;
VirtualProtect(dib->dsBm.bmBits, totalSize, new_prot, &old_prot);
TRACE(bitmap, "Changed protection from %ld to %ld\n",
old_prot, new_prot);
}
/***********************************************************************
* DIB_DoUpdateDIBSection
*/
static void DIB_DoUpdateDIBSection( BITMAPOBJ *bmp, BOOL32 toDIB )
{
DIBSECTIONOBJ *dib = bmp->dib;
DIB_SETIMAGEBITS_DESCR descr;
if (DIB_GetBitmapInfo( &dib->dibSection.dsBmih, &descr.infoWidth, &descr.lines,
&descr.infoBpp, &descr.compression ) == -1)
return;
descr.dc = NULL;
descr.image = dib->image;
descr.colorMap = dib->colorMap;
descr.nColorMap = dib->nColorMap;
descr.bits = dib->dibSection.dsBm.bmBits;
descr.depth = bmp->bitmap.bmBitsPixel;
/* Hack for now */
descr.drawable = ((X11DRV_PHYSBITMAP *)bmp->DDBitmap->physBitmap)->pixmap;
descr.gc = BITMAP_GC(bmp);
descr.xSrc = 0;
descr.ySrc = 0;
descr.xDest = 0;
descr.yDest = 0;
descr.width = bmp->bitmap.bmWidth;
descr.height = bmp->bitmap.bmHeight;
if (toDIB)
{
TRACE(bitmap, "Copying from Pixmap to DIB bits\n");
EnterCriticalSection( &X11DRV_CritSection );
CALL_LARGE_STACK( X11DRV_DIB_GetImageBits, &descr );
LeaveCriticalSection( &X11DRV_CritSection );
}
else
{
TRACE(bitmap, "Copying from DIB bits to Pixmap\n");
EnterCriticalSection( &X11DRV_CritSection );
CALL_LARGE_STACK( X11DRV_DIB_SetImageBits, &descr );
LeaveCriticalSection( &X11DRV_CritSection );
}
}
/***********************************************************************
* DIB_FaultHandler
*/
static BOOL32 DIB_FaultHandler( LPVOID res, LPVOID addr )
{
BOOL32 handled = FALSE;
BITMAPOBJ *bmp;
bmp = (BITMAPOBJ *)GDI_GetObjPtr( (HBITMAP32)res, BITMAP_MAGIC );
if (!bmp) return FALSE;
if (bmp->dib)
switch (bmp->dib->status)
{
case DIB_GdiMod:
TRACE( bitmap, "called in status DIB_GdiMod\n" );
DIB_DoProtectDIBSection( bmp, PAGE_READWRITE );
DIB_DoUpdateDIBSection( bmp, TRUE );
DIB_DoProtectDIBSection( bmp, PAGE_READONLY );
bmp->dib->status = DIB_InSync;
handled = TRUE;
break;
case DIB_InSync:
TRACE( bitmap, "called in status DIB_InSync\n" );
DIB_DoProtectDIBSection( bmp, PAGE_READWRITE );
bmp->dib->status = DIB_AppMod;
handled = TRUE;
break;
case DIB_AppMod:
FIXME( bitmap, "called in status DIB_AppMod: "
"this can't happen!\n" );
break;
case DIB_NoHandler:
FIXME( bitmap, "called in status DIB_NoHandler: "
"this can't happen!\n" );
break;
}
GDI_HEAP_UNLOCK( (HBITMAP32)res );
return handled;
}
/***********************************************************************
* DIB_UpdateDIBSection
*/
void DIB_UpdateDIBSection( DC *dc, BOOL32 toDIB )
{
BITMAPOBJ *bmp;
/* Ensure this is a Compatible DC that has a DIB section selected */
if (!dc) return;
if (!(dc->w.flags & DC_MEMORY)) return;
bmp = (BITMAPOBJ *)GDI_GetObjPtr( dc->w.hBitmap, BITMAP_MAGIC );
if (!bmp) return;
if (!bmp->dib)
{
GDI_HEAP_UNLOCK(dc->w.hBitmap);
return;
}
if (!toDIB)
{
/* Prepare for access to the DIB by GDI functions */
switch (bmp->dib->status)
{
default:
case DIB_NoHandler:
DIB_DoUpdateDIBSection( bmp, FALSE );
break;
case DIB_GdiMod:
TRACE( bitmap, "fromDIB called in status DIB_GdiMod\n" );
/* nothing to do */
break;
case DIB_InSync:
TRACE( bitmap, "fromDIB called in status DIB_InSync\n" );
/* nothing to do */
break;
case DIB_AppMod:
TRACE( bitmap, "fromDIB called in status DIB_AppMod\n" );
DIB_DoUpdateDIBSection( bmp, FALSE );
DIB_DoProtectDIBSection( bmp, PAGE_READONLY );
bmp->dib->status = DIB_InSync;
break;
}
}
else
{
/* Acknowledge write access to the DIB by GDI functions */
switch (bmp->dib->status)
{
default:
case DIB_NoHandler:
DIB_DoUpdateDIBSection( bmp, TRUE );
break;
case DIB_GdiMod:
TRACE( bitmap, " toDIB called in status DIB_GdiMod\n" );
/* nothing to do */
break;
case DIB_InSync:
TRACE( bitmap, " toDIB called in status DIB_InSync\n" );
DIB_DoProtectDIBSection( bmp, PAGE_NOACCESS );
bmp->dib->status = DIB_GdiMod;
break;
case DIB_AppMod:
FIXME( bitmap, " toDIB called in status DIB_AppMod: "
"this can't happen!\n" );
break;
}
}
GDI_HEAP_UNLOCK(dc->w.hBitmap);
}
/***********************************************************************
* CreateDIBSection16 (GDI.489)
*/
HBITMAP16 WINAPI CreateDIBSection16 (HDC16 hdc, BITMAPINFO *bmi, UINT16 usage,
LPVOID **bits, HANDLE32 section,
DWORD offset)
{
return CreateDIBSection32(hdc, bmi, usage, bits, section, offset);
}
/***********************************************************************
* CreateDIBSection32 (GDI32.36)
*/
HBITMAP32 WINAPI CreateDIBSection32 (HDC32 hdc, BITMAPINFO *bmi, UINT32 usage,
LPVOID **bits,HANDLE32 section,
DWORD offset)
{
HBITMAP32 res = 0;
BITMAPOBJ *bmp = NULL;
DIBSECTIONOBJ *dib = NULL;
int *colorMap = NULL;
int nColorMap;
/* Fill BITMAP32 structure with DIB data */
BITMAPINFOHEADER *bi = &bmi->bmiHeader;
INT32 effHeight, totalSize;
BITMAP32 bm;
TRACE(bitmap, "format (%ld,%ld), planes %d, bpp %d, size %ld, colors %ld (%s)\n",
bi->biWidth, bi->biHeight, bi->biPlanes, bi->biBitCount,
bi->biSizeImage, bi->biClrUsed, usage == DIB_PAL_COLORS? "PAL" : "RGB");
bm.bmType = 0;
bm.bmWidth = bi->biWidth;
bm.bmHeight = bi->biHeight;
bm.bmWidthBytes = DIB_GetDIBWidthBytes(bm.bmWidth, bi->biBitCount);
bm.bmPlanes = bi->biPlanes;
bm.bmBitsPixel = bi->biBitCount;
bm.bmBits = NULL;
/* Get storage location for DIB bits */
effHeight = bm.bmHeight >= 0 ? bm.bmHeight : -bm.bmHeight;
totalSize = bi->biSizeImage? bi->biSizeImage : bm.bmWidthBytes * effHeight;
if (section)
bm.bmBits = MapViewOfFile(section, FILE_MAP_ALL_ACCESS,
0L, offset, totalSize);
else
bm.bmBits = VirtualAlloc(NULL, totalSize,
MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE);
/* Create Color Map */
if (bm.bmBits && bm.bmBitsPixel <= 8)
{
DC *dc = hdc? (DC *)GDI_GetObjPtr(hdc, DC_MAGIC) : NULL;
if (hdc && !dc) dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!hdc || dc)
colorMap = X11DRV_DIB_BuildColorMap( dc, usage, bm.bmBitsPixel,
bmi, &nColorMap );
GDI_HEAP_UNLOCK(hdc);
}
/* Allocate Memory for DIB and fill structure */
if (bm.bmBits)
dib = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DIBSECTIONOBJ));
if (dib)
{
dib->dibSection.dsBm = bm;
dib->dibSection.dsBmih = *bi;
/* FIXME: dib->dibSection.dsBitfields ??? */
dib->dibSection.dshSection = section;
dib->dibSection.dsOffset = offset;
dib->status = DIB_NoHandler;
dib->nColorMap = nColorMap;
dib->colorMap = colorMap;
}
/* Create Device Dependent Bitmap and add DIB pointer */
if (dib)
{
res = CreateDIBitmap32(hdc, bi, 0, NULL, bmi, usage);
if (res)
{
bmp = (BITMAPOBJ *) GDI_GetObjPtr(res, BITMAP_MAGIC);
if (bmp)
{
bmp->dib = dib;
/* HACK for now */
if(!bmp->DDBitmap)
X11DRV_CreateBitmap(res);
}
}
}
/* Create XImage */
if (dib && bmp)
XCREATEIMAGE( dib->image, bm.bmWidth, effHeight, bmp->bitmap.bmBitsPixel );
/* Clean up in case of errors */
if (!res || !bmp || !dib || !bm.bmBits || (bm.bmBitsPixel <= 8 && !colorMap))
{
TRACE(bitmap, "got an error res=%08x, bmp=%p, dib=%p, bm.bmBits=%p\n",
res, bmp, dib, bm.bmBits);
if (bm.bmBits)
{
if (section)
UnmapViewOfFile(bm.bmBits), bm.bmBits = NULL;
else
VirtualFree(bm.bmBits, MEM_RELEASE, 0L), bm.bmBits = NULL;
}
if (dib && dib->image) { XDestroyImage(dib->image); dib->image = NULL; }
if (colorMap) { HeapFree(GetProcessHeap(), 0, colorMap); colorMap = NULL; }
if (dib) { HeapFree(GetProcessHeap(), 0, dib); dib = NULL; }
if (res) { DeleteObject32(res); res = 0; }
}
/* Install fault handler, if possible */
if (bm.bmBits)
{
if (VIRTUAL_SetFaultHandler(bm.bmBits, DIB_FaultHandler, (LPVOID)res))
{
DIB_DoProtectDIBSection( bmp, PAGE_READONLY );
if (dib) dib->status = DIB_InSync;
}
}
/* Return BITMAP handle and storage location */
if (res) GDI_HEAP_UNLOCK(res);
if (bm.bmBits && bits) *bits = bm.bmBits;
return res;
}
/***********************************************************************
* DIB_DeleteDIBSection
*/
void DIB_DeleteDIBSection( BITMAPOBJ *bmp )
{
if (bmp && bmp->dib)
{
DIBSECTIONOBJ *dib = bmp->dib;
if (dib->dibSection.dsBm.bmBits)
{
if (dib->dibSection.dshSection)
UnmapViewOfFile(dib->dibSection.dsBm.bmBits);
else
VirtualFree(dib->dibSection.dsBm.bmBits, MEM_RELEASE, 0L);
}
if (dib->image)
XDestroyImage( dib->image );
if (dib->colorMap)
HeapFree(GetProcessHeap(), 0, dib->colorMap);
HeapFree(GetProcessHeap(), 0, dib);
bmp->dib = NULL;
}
}
/***********************************************************************
* DIB_FixColorsToLoadflags
*
* Change color table entries when LR_LOADTRANSPARENT or LR_LOADMAP3DCOLORS
* are in loadflags
*/
void DIB_FixColorsToLoadflags(BITMAPINFO * bmi, UINT32 loadflags, BYTE pix)
{
int colors;
COLORREF c_W, c_S, c_F, c_L, c_C;
int incr,i;
RGBQUAD *ptr;
if (bmi->bmiHeader.biBitCount > 8) return;
if (bmi->bmiHeader.biSize == sizeof(BITMAPINFOHEADER)) incr = 4;
else if (bmi->bmiHeader.biSize == sizeof(BITMAPCOREHEADER)) incr = 3;
else {
WARN(bitmap, "Wrong bitmap header size!\n");
return;
}
colors = bmi->bmiHeader.biClrUsed;
if (!colors && (bmi->bmiHeader.biBitCount <= 8))
colors = 1 << bmi->bmiHeader.biBitCount;
c_W = GetSysColor32(COLOR_WINDOW);
c_S = GetSysColor32(COLOR_3DSHADOW);
c_F = GetSysColor32(COLOR_3DFACE);
c_L = GetSysColor32(COLOR_3DLIGHT);
if (loadflags & LR_LOADTRANSPARENT) {
switch (bmi->bmiHeader.biBitCount) {
case 1: pix = pix >> 7; break;
case 4: pix = pix >> 4; break;
case 8: break;
default:
WARN(bitmap, "(%d): Unsupported depth\n", bmi->bmiHeader.biBitCount);
return;
}
if (pix >= colors) {
WARN(bitmap, "pixel has color index greater than biClrUsed!\n");
return;
}
if (loadflags & LR_LOADMAP3DCOLORS) c_W = c_F;
ptr = (RGBQUAD*)((char*)bmi->bmiColors+pix*incr);
ptr->rgbBlue = GetBValue(c_W);
ptr->rgbGreen = GetGValue(c_W);
ptr->rgbRed = GetRValue(c_W);
}
if (loadflags & LR_LOADMAP3DCOLORS)
for (i=0; i<colors; i++) {
ptr = (RGBQUAD*)((char*)bmi->bmiColors+i*incr);
c_C = RGB(ptr->rgbRed, ptr->rgbGreen, ptr->rgbBlue);
if (c_C == RGB(128, 128, 128)) {
ptr->rgbRed = GetRValue(c_S);
ptr->rgbGreen = GetGValue(c_S);
ptr->rgbBlue = GetBValue(c_S);
} else if (c_C == RGB(192, 192, 192)) {
ptr->rgbRed = GetRValue(c_F);
ptr->rgbGreen = GetGValue(c_F);
ptr->rgbBlue = GetBValue(c_F);
} else if (c_C == RGB(223, 223, 223)) {
ptr->rgbRed = GetRValue(c_L);
ptr->rgbGreen = GetGValue(c_L);
ptr->rgbBlue = GetBValue(c_L);
}
}
}
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