reactos/wine
1
0
Fork 0
mirror of https://github.com/reactos/wine.git synced 2024-11-25 12:49:45 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
b4eee49aa5
wine/dlls/gdi/dib.c

908 lines
32 KiB
C
Raw Blame History

/*
* GDI device-independent bitmaps
*
* Copyright 1993,1994 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "gdi.h"
#include "wownt32.h"
#include "gdi_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(bitmap);
/***********************************************************************
* DIB_GetDIBWidthBytes
*
* Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned.
* http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/bitmaps_87eb.asp
*/
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("(%d): Unsupported depth\n", depth );
/* fall through */
case 32:
words = width;
}
return 4 * words;
}
/***********************************************************************
* DIB_GetDIBImageBytes
*
* Return the number of bytes used to hold the image in a DIB bitmap.
*/
int DIB_GetDIBImageBytes( int width, int height, int depth )
{
return DIB_GetDIBWidthBytes( width, depth ) * abs( height );
}
/***********************************************************************
* DIB_BitmapInfoSize
*
* Return the size of the bitmap info structure including color table.
*/
int DIB_BitmapInfoSize( const BITMAPINFO * info, WORD coloruse )
{
int colors;
if (info->bmiHeader.biSize == sizeof(BITMAPCOREHEADER))
{
BITMAPCOREHEADER *core = (BITMAPCOREHEADER *)info;
colors = (core->bcBitCount <= 8) ? 1 << core->bcBitCount : 0;
return sizeof(BITMAPCOREHEADER) + colors *
((coloruse == DIB_RGB_COLORS) ? sizeof(RGBTRIPLE) : sizeof(WORD));
}
else /* assume BITMAPINFOHEADER */
{
colors = info->bmiHeader.biClrUsed;
if (!colors && (info->bmiHeader.biBitCount <= 8))
colors = 1 << info->bmiHeader.biBitCount;
return sizeof(BITMAPINFOHEADER) + colors *
((coloruse == DIB_RGB_COLORS) ? sizeof(RGBQUAD) : sizeof(WORD));
}
}
/***********************************************************************
* DIB_GetBitmapInfo
*
* Get the info from a bitmap header.
* Return 1 for INFOHEADER, 0 for COREHEADER,
* 4 for V4HEADER, 5 for V5HEADER, -1 for error.
*/
static int DIB_GetBitmapInfo( const BITMAPINFOHEADER *header, LONG *width,
LONG *height, WORD *bpp, DWORD *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;
}
if (header->biSize == sizeof(BITMAPV4HEADER))
{
BITMAPV4HEADER *v4hdr = (BITMAPV4HEADER *)header;
*width = v4hdr->bV4Width;
*height = v4hdr->bV4Height;
*bpp = v4hdr->bV4BitCount;
*compr = v4hdr->bV4V4Compression;
return 4;
}
if (header->biSize == sizeof(BITMAPV5HEADER))
{
BITMAPV5HEADER *v5hdr = (BITMAPV5HEADER *)header;
*width = v5hdr->bV5Width;
*height = v5hdr->bV5Height;
*bpp = v5hdr->bV5BitCount;
*compr = v5hdr->bV5Compression;
return 5;
}
ERR("(%ld): unknown/wrong size for header\n", header->biSize );
return -1;
}
/***********************************************************************
* StretchDIBits (GDI32.@)
*/
INT WINAPI StretchDIBits(HDC hdc, INT xDst, INT yDst, INT widthDst,
INT heightDst, INT xSrc, INT ySrc, INT widthSrc,
INT heightSrc, const void *bits,
const BITMAPINFO *info, UINT wUsage, DWORD dwRop )
{
DC *dc;
if (!bits || !info)
return 0;
dc = DC_GetDCUpdate( hdc );
if(!dc) return FALSE;
if(dc->funcs->pStretchDIBits)
{
heightSrc = dc->funcs->pStretchDIBits(dc->physDev, xDst, yDst, widthDst,
heightDst, xSrc, ySrc, widthSrc,
heightSrc, bits, info, wUsage, dwRop);
GDI_ReleaseObj( hdc );
}
else /* use StretchBlt */
{
HBITMAP hBitmap, hOldBitmap;
HPALETTE hpal = NULL;
HDC hdcMem;
GDI_ReleaseObj( hdc );
hdcMem = CreateCompatibleDC( hdc );
hBitmap = CreateCompatibleBitmap(hdc, info->bmiHeader.biWidth,
info->bmiHeader.biHeight);
hOldBitmap = SelectObject( hdcMem, hBitmap );
if(wUsage == DIB_PAL_COLORS)
{
hpal = GetCurrentObject(hdc, OBJ_PAL);
hpal = SelectPalette(hdcMem, hpal, FALSE);
}
if (info->bmiHeader.biCompression == BI_RLE4 ||
info->bmiHeader.biCompression == BI_RLE8) {
/* when RLE compression is used, there may be some gaps (ie the DIB doesn't
* contain all the rectangle described in bmiHeader, but only part of it.
* This mean that those undescribed pixels must be left untouched.
* So, we first copy on a memory bitmap the current content of the
* destination rectangle, blit the DIB bits on top of it - hence leaving
* the gaps untouched -, and blitting the rectangle back.
* This insure that gaps are untouched on the destination rectangle
* Not doing so leads to trashed images (the gaps contain what was on the
* memory bitmap => generally black or garbage)
* Unfortunately, RLE DIBs without gaps will be slowed down. But this is
* another speed vs correctness issue. Anyway, if speed is needed, then the
* pStretchDIBits function shall be implemented.
* ericP (2000/09/09)
*/
/* copy existing bitmap from destination dc */
StretchBlt( hdcMem, xSrc, abs(info->bmiHeader.biHeight) - heightSrc - ySrc,
widthSrc, heightSrc, hdc, xDst, yDst, widthDst, heightDst,
dwRop );
}
SetDIBits(hdcMem, hBitmap, 0, info->bmiHeader.biHeight, bits,
info, wUsage);
/* Origin for DIBitmap may be bottom left (positive biHeight) or top
left (negative biHeight) */
StretchBlt( hdc, xDst, yDst, widthDst, heightDst,
hdcMem, xSrc, abs(info->bmiHeader.biHeight) - heightSrc - ySrc,
widthSrc, heightSrc, dwRop );
if(hpal)
SelectPalette(hdcMem, hpal, FALSE);
SelectObject( hdcMem, hOldBitmap );
DeleteDC( hdcMem );
DeleteObject( hBitmap );
}
return heightSrc;
}
/******************************************************************************
* SetDIBits [GDI32.@]
*
* 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
*/
INT WINAPI SetDIBits( HDC hdc, HBITMAP hbitmap, UINT startscan,
UINT lines, LPCVOID bits, const BITMAPINFO *info,
UINT coloruse )
{
DC *dc;
BITMAPOBJ *bitmap;
INT result = 0;
if (!(bitmap = GDI_GetObjPtr( hbitmap, BITMAP_MAGIC ))) return 0;
if (!(dc = DC_GetDCUpdate( hdc )))
{
if (coloruse == DIB_RGB_COLORS) FIXME( "shouldn't require a DC for DIB_RGB_COLORS\n" );
GDI_ReleaseObj( hbitmap );
return 0;
}
if (!bitmap->funcs && !BITMAP_SetOwnerDC( hbitmap, dc )) goto done;
if (bitmap->funcs && bitmap->funcs->pSetDIBits)
result = bitmap->funcs->pSetDIBits( dc->physDev, hbitmap, startscan, lines,
bits, info, coloruse );
else
result = lines;
done:
GDI_ReleaseObj( hdc );
GDI_ReleaseObj( hbitmap );
return result;
}
/***********************************************************************
* SetDIBitsToDevice (GDI32.@)
*/
INT WINAPI SetDIBitsToDevice(HDC hdc, INT xDest, INT yDest, DWORD cx,
DWORD cy, INT xSrc, INT ySrc, UINT startscan,
UINT lines, LPCVOID bits, const BITMAPINFO *info,
UINT coloruse )
{
INT ret;
DC *dc;
if (!(dc = DC_GetDCUpdate( hdc ))) return 0;
if(dc->funcs->pSetDIBitsToDevice)
ret = dc->funcs->pSetDIBitsToDevice( dc->physDev, xDest, yDest, cx, cy, xSrc,
ySrc, startscan, lines, bits,
info, coloruse );
else {
FIXME("unimplemented on hdc %p\n", hdc);
ret = 0;
}
GDI_ReleaseObj( hdc );
return ret;
}
/***********************************************************************
* SetDIBColorTable (GDI32.@)
*/
UINT WINAPI SetDIBColorTable( HDC hdc, UINT startpos, UINT entries, CONST RGBQUAD *colors )
{
DC * dc;
UINT result = 0;
if (!(dc = DC_GetDCUpdate( hdc ))) return 0;
if (dc->funcs->pSetDIBColorTable)
result = dc->funcs->pSetDIBColorTable(dc->physDev, startpos, entries, colors);
GDI_ReleaseObj( hdc );
return result;
}
/***********************************************************************
* GetDIBColorTable (GDI32.@)
*/
UINT WINAPI GetDIBColorTable( HDC hdc, UINT startpos, UINT entries, RGBQUAD *colors )
{
DC * dc;
UINT result = 0;
if (!(dc = DC_GetDCUpdate( hdc ))) return 0;
if (dc->funcs->pGetDIBColorTable)
result = dc->funcs->pGetDIBColorTable(dc->physDev, startpos, entries, colors);
GDI_ReleaseObj( hdc );
return result;
}
/* FIXME the following two structs should be combined with __sysPalTemplate in
objects/color.c - this should happen after de-X11-ing both of these
files.
NB. RGBQUAD and PALETTEENTRY have different orderings of red, green
and blue - sigh */
static RGBQUAD EGAColors[16] = {
/* rgbBlue, rgbGreen, rgbRed, rgbReserverd */
{ 0x00, 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x80, 0x00 },
{ 0x00, 0x80, 0x00, 0x00 },
{ 0x00, 0x80, 0x80, 0x00 },
{ 0x80, 0x00, 0x00, 0x00 },
{ 0x80, 0x00, 0x80, 0x00 },
{ 0x80, 0x80, 0x00, 0x00 },
{ 0x80, 0x80, 0x80, 0x00 },
{ 0xc0, 0xc0, 0xc0, 0x00 },
{ 0x00, 0x00, 0xff, 0x00 },
{ 0x00, 0xff, 0x00, 0x00 },
{ 0x00, 0xff, 0xff, 0x00 },
{ 0xff, 0x00, 0x00, 0x00 },
{ 0xff, 0x00, 0xff, 0x00 },
{ 0xff, 0xff, 0x00, 0x00 },
{ 0xff, 0xff, 0xff, 0x00 }
};
static RGBQUAD DefLogPalette[20] = { /* Copy of Default Logical Palette */
/* rgbBlue, rgbGreen, rgbRed, rgbReserverd */
{ 0x00, 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x80, 0x00 },
{ 0x00, 0x80, 0x00, 0x00 },
{ 0x00, 0x80, 0x80, 0x00 },
{ 0x80, 0x00, 0x00, 0x00 },
{ 0x80, 0x00, 0x80, 0x00 },
{ 0x80, 0x80, 0x00, 0x00 },
{ 0xc0, 0xc0, 0xc0, 0x00 },
{ 0xc0, 0xdc, 0xc0, 0x00 },
{ 0xf0, 0xca, 0xa6, 0x00 },
{ 0xf0, 0xfb, 0xff, 0x00 },
{ 0xa4, 0xa0, 0xa0, 0x00 },
{ 0x80, 0x80, 0x80, 0x00 },
{ 0x00, 0x00, 0xf0, 0x00 },
{ 0x00, 0xff, 0x00, 0x00 },
{ 0x00, 0xff, 0xff, 0x00 },
{ 0xff, 0x00, 0x00, 0x00 },
{ 0xff, 0x00, 0xff, 0x00 },
{ 0xff, 0xff, 0x00, 0x00 },
{ 0xff, 0xff, 0xff, 0x00 }
};
/******************************************************************************
* GetDIBits [GDI32.@]
*
* Retrieves bits of bitmap and copies to buffer.
*
* RETURNS
* Success: Number of scan lines copied from bitmap
* Failure: 0
*
* http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/bitmaps_87eb.asp
*/
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;
HDC memdc;
if (!info) return 0;
memdc = CreateCompatibleDC(hdc);
if (!(dc = DC_GetDCUpdate( hdc )))
{
DeleteDC(memdc);
return 0;
}
if (!(bmp = (BITMAPOBJ *)GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
{
GDI_ReleaseObj( hdc );
DeleteDC(memdc);
return 0;
}
/* Transfer color info */
if (info->bmiHeader.biBitCount <= 8 && info->bmiHeader.biBitCount > 0 ) {
info->bmiHeader.biClrUsed = 0;
/* If the bitmap object already has a dib section at the
same color depth then get the color map from it */
if (bmp->dib && bmp->dib->dsBm.bmBitsPixel == info->bmiHeader.biBitCount) {
if(coloruse == DIB_RGB_COLORS) {
HBITMAP oldbm;
oldbm = SelectObject(memdc, hbitmap);
GetDIBColorTable(memdc, 0, 1 << info->bmiHeader.biBitCount, info->bmiColors);
SelectObject(memdc, oldbm);
}
else {
WORD *index = (WORD*)info->bmiColors;
int i;
for(i = 0; i < 1 << info->bmiHeader.biBitCount; i++, index++)
*index = i;
}
}
else {
if(info->bmiHeader.biBitCount >= bmp->bitmap.bmBitsPixel) {
/* Generate the color map from the selected palette */
PALETTEENTRY * palEntry;
PALETTEOBJ * palette;
if (!(palette = (PALETTEOBJ*)GDI_GetObjPtr( dc->hPalette, PALETTE_MAGIC ))) {
GDI_ReleaseObj( hdc );
GDI_ReleaseObj( hbitmap );
DeleteDC(memdc);
return 0;
}
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;
}
GDI_ReleaseObj( dc->hPalette );
} 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++;
}
}
}
}
}
}
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 */
unsigned int srcwidth = bmp->dib->dsBm.bmWidth, srcwidthb = bmp->dib->dsBm.bmWidthBytes;
unsigned int dstwidth = info->bmiHeader.biWidth;
int dstwidthb = DIB_GetDIBWidthBytes( info->bmiHeader.biWidth, info->bmiHeader.biBitCount );
LPBYTE dbits = bits, sbits = (LPBYTE) bmp->dib->dsBm.bmBits + (startscan * srcwidthb);
unsigned int x, y, width, widthb;
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 */
{
widthb = min(srcwidthb, abs(dstwidthb));
/* FIXME: BI_BITFIELDS not supported yet */
for (y = 0; y < lines; y++, dbits+=dstwidthb, sbits+=srcwidthb)
memcpy(dbits, sbits, widthb);
}
break;
case 24: /* 24 bpp srcDIB -> 16 bpp dstDIB */
{
LPBYTE srcbits = sbits;
width = min(srcwidth, dstwidth);
for( y = 0; y < lines; y++) {
for( x = 0; x < width; x++, srcbits += 3)
*dstbits++ = ((srcbits[0] >> 3) & bmask) |
(((WORD)srcbits[1] << 2) & gmask) |
(((WORD)srcbits[2] << 7) & rmask);
dstbits = (LPWORD)(dbits+=dstwidthb);
srcbits = (sbits += srcwidthb);
}
}
break;
case 32: /* 32 bpp srcDIB -> 16 bpp dstDIB */
{
LPDWORD srcbits = (LPDWORD)sbits;
DWORD val;
width = min(srcwidth, dstwidth);
for( y = 0; y < lines; y++) {
for( x = 0; x < width; 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;
width = min(srcwidth, dstwidth);
/* FIXME: BI_BITFIELDS not supported yet */
for( y = 0; y < lines; y++) {
for( x = 0; x < width; 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 */
{
widthb = min(srcwidthb, abs(dstwidthb));
for (y = 0; y < lines; y++, dbits+=dstwidthb, sbits+=srcwidthb)
memcpy(dbits, sbits, widthb);
}
break;
case 32: /* 32 bpp srcDIB -> 24 bpp dstDIB */
{
LPBYTE srcbits = (LPBYTE)sbits;
width = min(srcwidth, dstwidth);
for( y = 0; y < lines; y++) {
for( x = 0; x < width; 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;
width = min(srcwidth, dstwidth);
/* FIXME: BI_BITFIELDS not supported yet */
for( y = 0; y < lines; y++) {
for( x = 0; x < width; 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;
width = min(srcwidth, dstwidth);
for( y = 0; y < lines; y++) {
for( x = 0; x < width; x++, srcbits+=3 )
*dstbits++ = ((DWORD)*srcbits) & 0x00ffffff;
dstbits=(LPDWORD)(dbits+=dstwidthb);
srcbits=(sbits+=srcwidthb);
}
}
break;
case 32: /* 32 bpp srcDIB -> 32 bpp dstDIB */
{
widthb = min(srcwidthb, abs(dstwidthb));
/* FIXME: BI_BITFIELDS not supported yet */
for (y = 0; y < lines; y++, dbits+=dstwidthb, sbits+=srcwidthb) {
memcpy(dbits, sbits, widthb);
}
}
break;
default: /* ? bit bmp -> 32 bit DIB */
FIXME("32 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 (!bmp->funcs && !BITMAP_SetOwnerDC( hbitmap, dc )) lines = 0;
else
{
if (bmp->funcs && bmp->funcs->pGetDIBits)
lines = bmp->funcs->pGetDIBits( dc->physDev, hbitmap, startscan,
lines, bits, info, coloruse );
else
lines = 0; /* FIXME: should copy from bmp->bitmap.bmBits */
}
}
}
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 );
}
lines = info->bmiHeader.biHeight;
}
TRACE("biSizeImage = %ld, biWidth = %ld, biHeight = %ld\n",
info->bmiHeader.biSizeImage, info->bmiHeader.biWidth,
info->bmiHeader.biHeight);
GDI_ReleaseObj( hdc );
GDI_ReleaseObj( hbitmap );
DeleteDC(memdc);
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 bpp;
DWORD compr;
DC *dc;
if (DIB_GetBitmapInfo( header, &width, &height, &bpp, &compr ) == -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=%lu, bits=%p, data=%p, coloruse=%u (bitmap: width=%ld, height=%ld, bpp=%u, compr=%lu)\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) SetDIBits( hdc, handle, 0, height, bits, data, coloruse );
else if (hdc && ((dc = DC_GetDCPtr( hdc )) != NULL) )
{
if (!BITMAP_SetOwnerDC( handle, dc ))
{
DeleteObject( handle );
handle = 0;
}
GDI_ReleaseObj( hdc );
}
}
return handle;
}
/***********************************************************************
* CreateDIBSection (GDI.489)
*/
HBITMAP16 WINAPI CreateDIBSection16 (HDC16 hdc, const BITMAPINFO *bmi, UINT16 usage,
SEGPTR *bits16, HANDLE section, DWORD offset)
{
LPVOID bits32;
HBITMAP hbitmap;
hbitmap = CreateDIBSection( HDC_32(hdc), bmi, usage, &bits32, section, offset );
if (hbitmap)
{
BITMAPOBJ *bmp = (BITMAPOBJ *) GDI_GetObjPtr(hbitmap, BITMAP_MAGIC);
if (bmp && bmp->dib && bits32)
{
const BITMAPINFOHEADER *bi = &bmi->bmiHeader;
INT height = bi->biHeight >= 0 ? bi->biHeight : -bi->biHeight;
INT width_bytes = DIB_GetDIBWidthBytes(bi->biWidth, bi->biBitCount);
INT size = (bi->biSizeImage && bi->biCompression != BI_RGB) ?
bi->biSizeImage : width_bytes * height;
/* calculate number of sel's needed for size with 64K steps */
WORD count = (size + 0xffff) / 0x10000;
WORD sel = AllocSelectorArray16(count);
int i;
for (i = 0; i < count; i++)
{
SetSelectorBase(sel + (i << __AHSHIFT), (DWORD)bits32 + i * 0x10000);
SetSelectorLimit16(sel + (i << __AHSHIFT), size - 1); /* yep, limit is correct */
size -= 0x10000;
}
bmp->segptr_bits = MAKESEGPTR( sel, 0 );
if (bits16) *bits16 = bmp->segptr_bits;
}
if (bmp) GDI_ReleaseObj( hbitmap );
}
return HBITMAP_16(hbitmap);
}
/***********************************************************************
* DIB_CreateDIBSection
*/
HBITMAP DIB_CreateDIBSection(HDC hdc, const BITMAPINFO *bmi, UINT usage,
VOID **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 )))
{
if(dc->funcs->pCreateDIBSection)
hbitmap = dc->funcs->pCreateDIBSection(dc->physDev, bmi, usage, bits, section, offset, ovr_pitch);
GDI_ReleaseObj(hdc);
}
if (bDesktopDC)
DeleteDC(hdc);
return hbitmap;
}
/***********************************************************************
* CreateDIBSection (GDI32.@)
*/
HBITMAP WINAPI CreateDIBSection(HDC hdc, CONST BITMAPINFO *bmi, UINT usage,
VOID **bits, HANDLE section,
DWORD offset)
{
return DIB_CreateDIBSection(hdc, bmi, usage, bits, section, offset, 0);
}
Reference in New Issue View Git Blame Copy Permalink