2 * GDI device-independent bitmaps
4 * Copyright 1993,1994 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #include "selectors.h"
28 #include "wine/debug.h"
31 WINE_DEFAULT_DEBUG_CHANNEL(bitmap
);
33 /***********************************************************************
34 * DIB_GetDIBWidthBytes
36 * Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned.
37 * http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/struc/src/str01.htm
39 int DIB_GetDIBWidthBytes( int width
, int depth
)
45 case 1: words
= (width
+ 31) / 32; break;
46 case 4: words
= (width
+ 7) / 8; break;
47 case 8: words
= (width
+ 3) / 4; break;
49 case 16: words
= (width
+ 1) / 2; break;
50 case 24: words
= (width
* 3 + 3)/4; break;
53 WARN("(%d): Unsupported depth\n", depth
);
61 /***********************************************************************
62 * DIB_GetDIBImageBytes
64 * Return the number of bytes used to hold the image in a DIB bitmap.
66 int DIB_GetDIBImageBytes( int width
, int height
, int depth
)
68 return DIB_GetDIBWidthBytes( width
, depth
) * abs( height
);
72 /***********************************************************************
75 * Return the size of the bitmap info structure including color table.
77 int DIB_BitmapInfoSize( const BITMAPINFO
* info
, WORD coloruse
)
81 if (info
->bmiHeader
.biSize
== sizeof(BITMAPCOREHEADER
))
83 BITMAPCOREHEADER
*core
= (BITMAPCOREHEADER
*)info
;
84 colors
= (core
->bcBitCount
<= 8) ? 1 << core
->bcBitCount
: 0;
85 return sizeof(BITMAPCOREHEADER
) + colors
*
86 ((coloruse
== DIB_RGB_COLORS
) ? sizeof(RGBTRIPLE
) : sizeof(WORD
));
88 else /* assume BITMAPINFOHEADER */
90 colors
= info
->bmiHeader
.biClrUsed
;
91 if (!colors
&& (info
->bmiHeader
.biBitCount
<= 8))
92 colors
= 1 << info
->bmiHeader
.biBitCount
;
93 return sizeof(BITMAPINFOHEADER
) + colors
*
94 ((coloruse
== DIB_RGB_COLORS
) ? sizeof(RGBQUAD
) : sizeof(WORD
));
99 /***********************************************************************
102 * Get the info from a bitmap header.
103 * Return 1 for INFOHEADER, 0 for COREHEADER,
104 * 4 for V4HEADER, 5 for V5HEADER, -1 for error.
106 int DIB_GetBitmapInfo( const BITMAPINFOHEADER
*header
, DWORD
*width
,
107 int *height
, WORD
*bpp
, WORD
*compr
)
109 if (header
->biSize
== sizeof(BITMAPINFOHEADER
))
111 *width
= header
->biWidth
;
112 *height
= header
->biHeight
;
113 *bpp
= header
->biBitCount
;
114 *compr
= header
->biCompression
;
117 if (header
->biSize
== sizeof(BITMAPCOREHEADER
))
119 BITMAPCOREHEADER
*core
= (BITMAPCOREHEADER
*)header
;
120 *width
= core
->bcWidth
;
121 *height
= core
->bcHeight
;
122 *bpp
= core
->bcBitCount
;
126 if (header
->biSize
== sizeof(BITMAPV4HEADER
))
128 BITMAPV4HEADER
*v4hdr
= (BITMAPV4HEADER
*)header
;
129 *width
= v4hdr
->bV4Width
;
130 *height
= v4hdr
->bV4Height
;
131 *bpp
= v4hdr
->bV4BitCount
;
132 *compr
= v4hdr
->bV4Compression
;
135 if (header
->biSize
== sizeof(BITMAPV5HEADER
))
137 BITMAPV5HEADER
*v5hdr
= (BITMAPV5HEADER
*)header
;
138 *width
= v5hdr
->bV5Width
;
139 *height
= v5hdr
->bV5Height
;
140 *bpp
= v5hdr
->bV5BitCount
;
141 *compr
= v5hdr
->bV5Compression
;
144 ERR("(%ld): unknown/wrong size for header\n", header
->biSize
);
149 /***********************************************************************
150 * StretchDIBits (GDI.439)
152 INT16 WINAPI
StretchDIBits16(HDC16 hdc
, INT16 xDst
, INT16 yDst
, INT16 widthDst
,
153 INT16 heightDst
, INT16 xSrc
, INT16 ySrc
, INT16 widthSrc
,
154 INT16 heightSrc
, const VOID
*bits
,
155 const BITMAPINFO
*info
, UINT16 wUsage
, DWORD dwRop
)
157 return (INT16
)StretchDIBits( hdc
, xDst
, yDst
, widthDst
, heightDst
,
158 xSrc
, ySrc
, widthSrc
, heightSrc
, bits
,
159 info
, wUsage
, dwRop
);
163 /***********************************************************************
164 * StretchDIBits (GDI32.@)
166 INT WINAPI
StretchDIBits(HDC hdc
, INT xDst
, INT yDst
, INT widthDst
,
167 INT heightDst
, INT xSrc
, INT ySrc
, INT widthSrc
,
168 INT heightSrc
, const void *bits
,
169 const BITMAPINFO
*info
, UINT wUsage
, DWORD dwRop
)
171 DC
*dc
= DC_GetDCUpdate( hdc
);
172 if(!dc
) return FALSE
;
174 if(dc
->funcs
->pStretchDIBits
)
176 heightSrc
= dc
->funcs
->pStretchDIBits(dc
->physDev
, xDst
, yDst
, widthDst
,
177 heightDst
, xSrc
, ySrc
, widthSrc
,
178 heightSrc
, bits
, info
, wUsage
, dwRop
);
179 GDI_ReleaseObj( hdc
);
181 else /* use StretchBlt */
183 HBITMAP hBitmap
, hOldBitmap
;
186 GDI_ReleaseObj( hdc
);
187 hdcMem
= CreateCompatibleDC( hdc
);
188 if (info
->bmiHeader
.biCompression
== BI_RLE4
||
189 info
->bmiHeader
.biCompression
== BI_RLE8
) {
191 /* when RLE compression is used, there may be some gaps (ie the DIB doesn't
192 * contain all the rectangle described in bmiHeader, but only part of it.
193 * This mean that those undescribed pixels must be left untouched.
194 * So, we first copy on a memory bitmap the current content of the
195 * destination rectangle, blit the DIB bits on top of it - hence leaving
196 * the gaps untouched -, and blitting the rectangle back.
197 * This insure that gaps are untouched on the destination rectangle
198 * Not doing so leads to trashed images (the gaps contain what was on the
199 * memory bitmap => generally black or garbage)
200 * Unfortunately, RLE DIBs without gaps will be slowed down. But this is
201 * another speed vs correctness issue. Anyway, if speed is needed, then the
202 * pStretchDIBits function shall be implemented.
205 hBitmap
= CreateCompatibleBitmap(hdc
, info
->bmiHeader
.biWidth
,
206 info
->bmiHeader
.biHeight
);
207 hOldBitmap
= SelectObject( hdcMem
, hBitmap
);
209 /* copy existing bitmap from destination dc */
210 StretchBlt( hdcMem
, xSrc
, abs(info
->bmiHeader
.biHeight
) - heightSrc
- ySrc
,
211 widthSrc
, heightSrc
, hdc
, xDst
, yDst
, widthDst
, heightDst
,
213 SetDIBits(hdcMem
, hBitmap
, 0, info
->bmiHeader
.biHeight
, bits
,
214 info
, DIB_RGB_COLORS
);
217 hBitmap
= CreateDIBitmap( hdc
, &info
->bmiHeader
, CBM_INIT
,
218 bits
, info
, wUsage
);
219 hOldBitmap
= SelectObject( hdcMem
, hBitmap
);
222 /* Origin for DIBitmap may be bottom left (positive biHeight) or top
223 left (negative biHeight) */
224 StretchBlt( hdc
, xDst
, yDst
, widthDst
, heightDst
,
225 hdcMem
, xSrc
, abs(info
->bmiHeader
.biHeight
) - heightSrc
- ySrc
,
226 widthSrc
, heightSrc
, dwRop
);
227 SelectObject( hdcMem
, hOldBitmap
);
229 DeleteObject( hBitmap
);
235 /***********************************************************************
236 * SetDIBits (GDI.440)
238 INT16 WINAPI
SetDIBits16( HDC16 hdc
, HBITMAP16 hbitmap
, UINT16 startscan
,
239 UINT16 lines
, LPCVOID bits
, const BITMAPINFO
*info
,
242 return SetDIBits( hdc
, hbitmap
, startscan
, lines
, bits
, info
, coloruse
);
246 /******************************************************************************
247 * SetDIBits [GDI32.@] Sets pixels in a bitmap using colors from DIB
250 * hdc [I] Handle to device context
251 * hbitmap [I] Handle to bitmap
252 * startscan [I] Starting scan line
253 * lines [I] Number of scan lines
254 * bits [I] Array of bitmap bits
255 * info [I] Address of structure with data
256 * coloruse [I] Type of color indexes to use
259 * Success: Number of scan lines copied
262 INT WINAPI
SetDIBits( HDC hdc
, HBITMAP hbitmap
, UINT startscan
,
263 UINT lines
, LPCVOID bits
, const BITMAPINFO
*info
,
270 if (!(bitmap
= GDI_GetObjPtr( hbitmap
, BITMAP_MAGIC
))) return 0;
272 if (!(dc
= DC_GetDCUpdate( hdc
)))
274 if (coloruse
== DIB_RGB_COLORS
) FIXME( "shouldn't require a DC for DIB_RGB_COLORS\n" );
275 GDI_ReleaseObj( hbitmap
);
279 if (!bitmap
->funcs
&& !BITMAP_SetOwnerDC( hbitmap
, dc
)) goto done
;
281 if (bitmap
->funcs
&& bitmap
->funcs
->pSetDIBits
)
282 result
= bitmap
->funcs
->pSetDIBits( dc
->physDev
, hbitmap
, startscan
, lines
,
283 bits
, info
, coloruse
);
288 GDI_ReleaseObj( hdc
);
289 GDI_ReleaseObj( hbitmap
);
294 /***********************************************************************
295 * SetDIBitsToDevice (GDI.443)
297 INT16 WINAPI
SetDIBitsToDevice16(HDC16 hdc
, INT16 xDest
, INT16 yDest
, INT16 cx
,
298 INT16 cy
, INT16 xSrc
, INT16 ySrc
, UINT16 startscan
,
299 UINT16 lines
, LPCVOID bits
, const BITMAPINFO
*info
,
302 return SetDIBitsToDevice( hdc
, xDest
, yDest
, cx
, cy
, xSrc
, ySrc
,
303 startscan
, lines
, bits
, info
, coloruse
);
307 /***********************************************************************
308 * SetDIBitsToDevice (GDI32.@)
310 INT WINAPI
SetDIBitsToDevice(HDC hdc
, INT xDest
, INT yDest
, DWORD cx
,
311 DWORD cy
, INT xSrc
, INT ySrc
, UINT startscan
,
312 UINT lines
, LPCVOID bits
, const BITMAPINFO
*info
,
318 if (!(dc
= DC_GetDCUpdate( hdc
))) return 0;
320 if(dc
->funcs
->pSetDIBitsToDevice
)
321 ret
= dc
->funcs
->pSetDIBitsToDevice( dc
->physDev
, xDest
, yDest
, cx
, cy
, xSrc
,
322 ySrc
, startscan
, lines
, bits
,
325 FIXME("unimplemented on hdc %08x\n", hdc
);
329 GDI_ReleaseObj( hdc
);
333 /***********************************************************************
334 * SetDIBColorTable (GDI.602)
336 UINT16 WINAPI
SetDIBColorTable16( HDC16 hdc
, UINT16 startpos
, UINT16 entries
,
339 return SetDIBColorTable( hdc
, startpos
, entries
, colors
);
342 /***********************************************************************
343 * SetDIBColorTable (GDI32.@)
345 UINT WINAPI
SetDIBColorTable( HDC hdc
, UINT startpos
, UINT entries
, RGBQUAD
*colors
)
350 if (!(dc
= DC_GetDCUpdate( hdc
))) return 0;
352 if (dc
->funcs
->pSetDIBColorTable
)
353 result
= dc
->funcs
->pSetDIBColorTable(dc
->physDev
, startpos
, entries
, colors
);
355 GDI_ReleaseObj( hdc
);
359 /***********************************************************************
360 * GetDIBColorTable (GDI.603)
362 UINT16 WINAPI
GetDIBColorTable16( HDC16 hdc
, UINT16 startpos
, UINT16 entries
,
365 return GetDIBColorTable( hdc
, startpos
, entries
, colors
);
368 /***********************************************************************
369 * GetDIBColorTable (GDI32.@)
371 UINT WINAPI
GetDIBColorTable( HDC hdc
, UINT startpos
, UINT entries
, RGBQUAD
*colors
)
376 if (!(dc
= DC_GetDCUpdate( hdc
))) return 0;
378 if (dc
->funcs
->pGetDIBColorTable
)
379 result
= dc
->funcs
->pGetDIBColorTable(dc
->physDev
, startpos
, entries
, colors
);
381 GDI_ReleaseObj( hdc
);
385 /* FIXME the following two structs should be combined with __sysPalTemplate in
386 objects/color.c - this should happen after de-X11-ing both of these
388 NB. RGBQUAD and PALETTEENTRY have different orderings of red, green
391 static RGBQUAD EGAColors
[16] = {
392 /* rgbBlue, rgbGreen, rgbRed, rgbReserverd */
393 { 0x00, 0x00, 0x00, 0x00 },
394 { 0x00, 0x00, 0x80, 0x00 },
395 { 0x00, 0x80, 0x00, 0x00 },
396 { 0x00, 0x80, 0x80, 0x00 },
397 { 0x80, 0x00, 0x00, 0x00 },
398 { 0x80, 0x00, 0x80, 0x00 },
399 { 0x80, 0x80, 0x00, 0x00 },
400 { 0x80, 0x80, 0x80, 0x00 },
401 { 0xc0, 0xc0, 0xc0, 0x00 },
402 { 0x00, 0x00, 0xff, 0x00 },
403 { 0x00, 0xff, 0x00, 0x00 },
404 { 0x00, 0xff, 0xff, 0x00 },
405 { 0xff, 0x00, 0x00, 0x00 },
406 { 0xff, 0x00, 0xff, 0x00 },
407 { 0xff, 0xff, 0x00, 0x00 },
408 { 0xff, 0xff, 0xff, 0x00 }
412 static RGBQUAD DefLogPalette
[20] = { /* Copy of Default Logical Palette */
413 /* rgbBlue, rgbGreen, rgbRed, rgbReserverd */
414 { 0x00, 0x00, 0x00, 0x00 },
415 { 0x00, 0x00, 0x80, 0x00 },
416 { 0x00, 0x80, 0x00, 0x00 },
417 { 0x00, 0x80, 0x80, 0x00 },
418 { 0x80, 0x00, 0x00, 0x00 },
419 { 0x80, 0x00, 0x80, 0x00 },
420 { 0x80, 0x80, 0x00, 0x00 },
421 { 0xc0, 0xc0, 0xc0, 0x00 },
422 { 0xc0, 0xdc, 0xc0, 0x00 },
423 { 0xf0, 0xca, 0xa6, 0x00 },
424 { 0xf0, 0xfb, 0xff, 0x00 },
425 { 0xa4, 0xa0, 0xa0, 0x00 },
426 { 0x80, 0x80, 0x80, 0x00 },
427 { 0x00, 0x00, 0xf0, 0x00 },
428 { 0x00, 0xff, 0x00, 0x00 },
429 { 0x00, 0xff, 0xff, 0x00 },
430 { 0xff, 0x00, 0x00, 0x00 },
431 { 0xff, 0x00, 0xff, 0x00 },
432 { 0xff, 0xff, 0x00, 0x00 },
433 { 0xff, 0xff, 0xff, 0x00 }
436 /***********************************************************************
437 * GetDIBits (GDI.441)
439 INT16 WINAPI
GetDIBits16( HDC16 hdc
, HBITMAP16 hbitmap
, UINT16 startscan
,
440 UINT16 lines
, LPVOID bits
, BITMAPINFO
* info
,
443 return GetDIBits( hdc
, hbitmap
, startscan
, lines
, bits
, info
, coloruse
);
447 /******************************************************************************
448 * GetDIBits [GDI32.@] Retrieves bits of bitmap and copies to buffer
451 * Success: Number of scan lines copied from bitmap
454 * http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/func/src/f30_14.htm
456 INT WINAPI
GetDIBits(
457 HDC hdc
, /* [in] Handle to device context */
458 HBITMAP hbitmap
, /* [in] Handle to bitmap */
459 UINT startscan
, /* [in] First scan line to set in dest bitmap */
460 UINT lines
, /* [in] Number of scan lines to copy */
461 LPVOID bits
, /* [out] Address of array for bitmap bits */
462 BITMAPINFO
* info
, /* [out] Address of structure with bitmap data */
463 UINT coloruse
) /* [in] RGB or palette index */
467 PALETTEENTRY
* palEntry
;
468 PALETTEOBJ
* palette
;
472 if (!(dc
= DC_GetDCUpdate( hdc
))) return 0;
473 if (!(bmp
= (BITMAPOBJ
*)GDI_GetObjPtr( hbitmap
, BITMAP_MAGIC
)))
475 GDI_ReleaseObj( hdc
);
478 if (!(palette
= (PALETTEOBJ
*)GDI_GetObjPtr( dc
->hPalette
, PALETTE_MAGIC
)))
480 GDI_ReleaseObj( hdc
);
481 GDI_ReleaseObj( hbitmap
);
485 /* Transfer color info */
487 if (info
->bmiHeader
.biBitCount
<= 8 && info
->bmiHeader
.biBitCount
> 0 ) {
489 info
->bmiHeader
.biClrUsed
= 0;
491 if(info
->bmiHeader
.biBitCount
>= bmp
->bitmap
.bmBitsPixel
) {
492 palEntry
= palette
->logpalette
.palPalEntry
;
493 for (i
= 0; i
< (1 << bmp
->bitmap
.bmBitsPixel
); i
++, palEntry
++) {
494 if (coloruse
== DIB_RGB_COLORS
) {
495 info
->bmiColors
[i
].rgbRed
= palEntry
->peRed
;
496 info
->bmiColors
[i
].rgbGreen
= palEntry
->peGreen
;
497 info
->bmiColors
[i
].rgbBlue
= palEntry
->peBlue
;
498 info
->bmiColors
[i
].rgbReserved
= 0;
500 else ((WORD
*)info
->bmiColors
)[i
] = (WORD
)i
;
503 switch (info
->bmiHeader
.biBitCount
) {
505 info
->bmiColors
[0].rgbRed
= info
->bmiColors
[0].rgbGreen
=
506 info
->bmiColors
[0].rgbBlue
= 0;
507 info
->bmiColors
[0].rgbReserved
= 0;
508 info
->bmiColors
[1].rgbRed
= info
->bmiColors
[1].rgbGreen
=
509 info
->bmiColors
[1].rgbBlue
= 0xff;
510 info
->bmiColors
[1].rgbReserved
= 0;
514 memcpy(info
->bmiColors
, EGAColors
, sizeof(EGAColors
));
522 memcpy(info
->bmiColors
, DefLogPalette
,
523 10 * sizeof(RGBQUAD
));
524 memcpy(info
->bmiColors
+ 246, DefLogPalette
+ 10,
525 10 * sizeof(RGBQUAD
));
526 color
= info
->bmiColors
+ 10;
527 for(r
= 0; r
<= 5; r
++) /* FIXME */
528 for(g
= 0; g
<= 5; g
++)
529 for(b
= 0; b
<= 5; b
++) {
530 color
->rgbRed
= (r
* 0xff) / 5;
531 color
->rgbGreen
= (g
* 0xff) / 5;
532 color
->rgbBlue
= (b
* 0xff) / 5;
533 color
->rgbReserved
= 0;
541 GDI_ReleaseObj( dc
->hPalette
);
545 /* If the bitmap object already have a dib section that contains image data, get the bits from it */
546 if(bmp
->dib
&& bmp
->dib
->dsBm
.bmBitsPixel
>= 15 && info
->bmiHeader
.biBitCount
>= 15)
548 /*FIXME: Only RGB dibs supported for now */
549 unsigned int srcwidth
= bmp
->dib
->dsBm
.bmWidth
, srcwidthb
= bmp
->dib
->dsBm
.bmWidthBytes
;
550 int dstwidthb
= DIB_GetDIBWidthBytes( info
->bmiHeader
.biWidth
, info
->bmiHeader
.biBitCount
);
551 LPBYTE dbits
= bits
, sbits
= (LPBYTE
) bmp
->dib
->dsBm
.bmBits
+ (startscan
* srcwidthb
);
554 if ((info
->bmiHeader
.biHeight
< 0) ^ (bmp
->dib
->dsBmih
.biHeight
< 0))
556 dbits
= (LPBYTE
)bits
+ (dstwidthb
* (lines
-1));
557 dstwidthb
= -dstwidthb
;
560 switch( info
->bmiHeader
.biBitCount
) {
563 case 16: /* 16 bpp dstDIB */
565 LPWORD dstbits
= (LPWORD
)dbits
;
566 WORD rmask
= 0x7c00, gmask
= 0x03e0, bmask
= 0x001f;
568 /* FIXME: BI_BITFIELDS not supported yet */
570 switch(bmp
->dib
->dsBm
.bmBitsPixel
) {
572 case 16: /* 16 bpp srcDIB -> 16 bpp dstDIB */
574 /* FIXME: BI_BITFIELDS not supported yet */
575 for (y
= 0; y
< lines
; y
++, dbits
+=dstwidthb
, sbits
+=srcwidthb
)
576 memcpy(dbits
, sbits
, srcwidthb
);
580 case 24: /* 24 bpp srcDIB -> 16 bpp dstDIB */
582 LPBYTE srcbits
= sbits
;
584 for( y
= 0; y
< lines
; y
++) {
585 for( x
= 0; x
< srcwidth
; x
++, srcbits
+= 3)
586 *dstbits
++ = ((srcbits
[0] >> 3) & bmask
) |
587 (((WORD
)srcbits
[1] << 2) & gmask
) |
588 (((WORD
)srcbits
[2] << 7) & rmask
);
590 dstbits
= (LPWORD
)(dbits
+=dstwidthb
);
591 srcbits
= (sbits
+= srcwidthb
);
596 case 32: /* 32 bpp srcDIB -> 16 bpp dstDIB */
598 LPDWORD srcbits
= (LPDWORD
)sbits
;
601 for( y
= 0; y
< lines
; y
++) {
602 for( x
= 0; x
< srcwidth
; x
++ ) {
604 *dstbits
++ = (WORD
)(((val
>> 3) & bmask
) | ((val
>> 6) & gmask
) |
605 ((val
>> 9) & rmask
));
607 dstbits
= (LPWORD
)(dbits
+=dstwidthb
);
608 srcbits
= (LPDWORD
)(sbits
+=srcwidthb
);
613 default: /* ? bit bmp -> 16 bit DIB */
614 FIXME("15/16 bit DIB %d bit bitmap\n",
615 bmp
->bitmap
.bmBitsPixel
);
621 case 24: /* 24 bpp dstDIB */
623 LPBYTE dstbits
= dbits
;
625 switch(bmp
->dib
->dsBm
.bmBitsPixel
) {
627 case 16: /* 16 bpp srcDIB -> 24 bpp dstDIB */
629 LPWORD srcbits
= (LPWORD
)sbits
;
632 /* FIXME: BI_BITFIELDS not supported yet */
633 for( y
= 0; y
< lines
; y
++) {
634 for( x
= 0; x
< srcwidth
; x
++ ) {
636 *dstbits
++ = (BYTE
)(((val
<< 3) & 0xf8) | ((val
>> 2) & 0x07));
637 *dstbits
++ = (BYTE
)(((val
>> 2) & 0xf8) | ((val
>> 7) & 0x07));
638 *dstbits
++ = (BYTE
)(((val
>> 7) & 0xf8) | ((val
>> 12) & 0x07));
640 dstbits
= (LPBYTE
)(dbits
+=dstwidthb
);
641 srcbits
= (LPWORD
)(sbits
+=srcwidthb
);
646 case 24: /* 24 bpp srcDIB -> 24 bpp dstDIB */
648 for (y
= 0; y
< lines
; y
++, dbits
+=dstwidthb
, sbits
+=srcwidthb
)
649 memcpy(dbits
, sbits
, srcwidthb
);
653 case 32: /* 32 bpp srcDIB -> 24 bpp dstDIB */
655 LPBYTE srcbits
= (LPBYTE
)sbits
;
657 for( y
= 0; y
< lines
; y
++) {
658 for( x
= 0; x
< srcwidth
; x
++, srcbits
++ ) {
659 *dstbits
++ = *srcbits
++;
660 *dstbits
++ = *srcbits
++;
661 *dstbits
++ = *srcbits
++;
663 dstbits
=(LPBYTE
)(dbits
+=dstwidthb
);
664 srcbits
= (LPBYTE
)(sbits
+=srcwidthb
);
669 default: /* ? bit bmp -> 24 bit DIB */
670 FIXME("24 bit DIB %d bit bitmap\n",
671 bmp
->bitmap
.bmBitsPixel
);
677 case 32: /* 32 bpp dstDIB */
679 LPDWORD dstbits
= (LPDWORD
)dbits
;
681 /* FIXME: BI_BITFIELDS not supported yet */
683 switch(bmp
->dib
->dsBm
.bmBitsPixel
) {
684 case 16: /* 16 bpp srcDIB -> 32 bpp dstDIB */
686 LPWORD srcbits
= (LPWORD
)sbits
;
689 /* FIXME: BI_BITFIELDS not supported yet */
690 for( y
= 0; y
< lines
; y
++) {
691 for( x
= 0; x
< srcwidth
; x
++ ) {
692 val
= (DWORD
)*srcbits
++;
693 *dstbits
++ = ((val
<< 3) & 0xf8) | ((val
>> 2) & 0x07) |
694 ((val
<< 6) & 0xf800) | ((val
<< 1) & 0x0700) |
695 ((val
<< 9) & 0xf80000) | ((val
<< 4) & 0x070000);
697 dstbits
=(LPDWORD
)(dbits
+=dstwidthb
);
698 srcbits
=(LPWORD
)(sbits
+=srcwidthb
);
703 case 24: /* 24 bpp srcDIB -> 32 bpp dstDIB */
705 LPBYTE srcbits
= sbits
;
707 for( y
= 0; y
< lines
; y
++) {
708 for( x
= 0; x
< srcwidth
; x
++, srcbits
+=3 )
709 *dstbits
++ = ((DWORD
)*srcbits
) & 0x00ffffff;
710 dstbits
=(LPDWORD
)(dbits
+=dstwidthb
);
711 srcbits
=(sbits
+=srcwidthb
);
716 case 32: /* 32 bpp srcDIB -> 16 bpp dstDIB */
718 /* FIXME: BI_BITFIELDS not supported yet */
719 for (y
= 0; y
< lines
; y
++, dbits
+=dstwidthb
, sbits
+=srcwidthb
)
720 memcpy(dbits
, sbits
, srcwidthb
);
724 default: /* ? bit bmp -> 16 bit DIB */
725 FIXME("15/16 bit DIB %d bit bitmap\n",
726 bmp
->bitmap
.bmBitsPixel
);
732 default: /* ? bit DIB */
733 FIXME("Unsupported DIB depth %d\n", info
->bmiHeader
.biBitCount
);
737 /* Otherwise, get bits from the XImage */
740 if (!bmp
->funcs
&& !BITMAP_SetOwnerDC( hbitmap
, dc
)) lines
= 0;
743 if (bmp
->funcs
&& bmp
->funcs
->pGetDIBits
)
744 lines
= bmp
->funcs
->pGetDIBits( dc
->physDev
, hbitmap
, startscan
,
745 lines
, bits
, info
, coloruse
);
747 lines
= 0; /* FIXME: should copy from bmp->bitmap.bmBits */
751 else if( info
->bmiHeader
.biSize
>= sizeof(BITMAPINFOHEADER
) )
753 /* fill in struct members */
755 if( info
->bmiHeader
.biBitCount
== 0)
757 info
->bmiHeader
.biWidth
= bmp
->bitmap
.bmWidth
;
758 info
->bmiHeader
.biHeight
= bmp
->bitmap
.bmHeight
;
759 info
->bmiHeader
.biPlanes
= 1;
760 info
->bmiHeader
.biBitCount
= bmp
->bitmap
.bmBitsPixel
;
761 info
->bmiHeader
.biSizeImage
=
762 DIB_GetDIBImageBytes( bmp
->bitmap
.bmWidth
,
763 bmp
->bitmap
.bmHeight
,
764 bmp
->bitmap
.bmBitsPixel
);
765 info
->bmiHeader
.biCompression
= 0;
769 info
->bmiHeader
.biSizeImage
= DIB_GetDIBImageBytes(
770 info
->bmiHeader
.biWidth
,
771 info
->bmiHeader
.biHeight
,
772 info
->bmiHeader
.biBitCount
);
776 TRACE("biSizeImage = %ld, biWidth = %ld, biHeight = %ld\n",
777 info
->bmiHeader
.biSizeImage
, info
->bmiHeader
.biWidth
,
778 info
->bmiHeader
.biHeight
);
780 GDI_ReleaseObj( hdc
);
781 GDI_ReleaseObj( hbitmap
);
787 /***********************************************************************
788 * CreateDIBitmap (GDI.442)
790 HBITMAP16 WINAPI
CreateDIBitmap16( HDC16 hdc
, const BITMAPINFOHEADER
* header
,
791 DWORD init
, LPCVOID bits
, const BITMAPINFO
* data
,
794 return CreateDIBitmap( hdc
, header
, init
, bits
, data
, coloruse
);
798 /***********************************************************************
799 * CreateDIBitmap (GDI32.@)
801 HBITMAP WINAPI
CreateDIBitmap( HDC hdc
, const BITMAPINFOHEADER
*header
,
802 DWORD init
, LPCVOID bits
, const BITMAPINFO
*data
,
813 if (DIB_GetBitmapInfo( header
, &width
, &height
, &bpp
, &compr
) == -1) return 0;
814 if (height
< 0) height
= -height
;
816 /* Check if we should create a monochrome or color bitmap. */
817 /* We create a monochrome bitmap only if it has exactly 2 */
818 /* colors, which are black followed by white, nothing else. */
819 /* In all other cases, we create a color bitmap. */
821 if (bpp
!= 1) fColor
= TRUE
;
822 else if ((coloruse
!= DIB_RGB_COLORS
) ||
823 (init
!= CBM_INIT
) || !data
) fColor
= FALSE
;
826 if (data
->bmiHeader
.biSize
== sizeof(BITMAPINFOHEADER
))
828 RGBQUAD
*rgb
= data
->bmiColors
;
829 DWORD col
= RGB( rgb
->rgbRed
, rgb
->rgbGreen
, rgb
->rgbBlue
);
831 /* Check if the first color of the colormap is black */
832 if ((col
== RGB(0,0,0)))
835 col
= RGB( rgb
->rgbRed
, rgb
->rgbGreen
, rgb
->rgbBlue
);
836 /* If the second color is white, create a monochrome bitmap */
837 fColor
= (col
!= RGB(0xff,0xff,0xff));
839 /* Note : If the first color of the colormap is white
840 followed by black, we have to create a color bitmap.
841 If we don't the white will be displayed in black later on!*/
844 else if (data
->bmiHeader
.biSize
== sizeof(BITMAPCOREHEADER
))
846 RGBTRIPLE
*rgb
= ((BITMAPCOREINFO
*)data
)->bmciColors
;
847 DWORD col
= RGB( rgb
->rgbtRed
, rgb
->rgbtGreen
, rgb
->rgbtBlue
);
848 if ((col
== RGB(0,0,0)))
851 col
= RGB( rgb
->rgbtRed
, rgb
->rgbtGreen
, rgb
->rgbtBlue
);
852 fColor
= (col
!= RGB(0xff,0xff,0xff));
856 else if (data
->bmiHeader
.biSize
== sizeof(BITMAPV4HEADER
))
857 { /* FIXME: correct ? */
858 RGBQUAD
*rgb
= data
->bmiColors
;
859 DWORD col
= RGB( rgb
->rgbRed
, rgb
->rgbGreen
, rgb
->rgbBlue
);
861 /* Check if the first color of the colormap is black */
862 if ((col
== RGB(0,0,0)))
865 col
= RGB( rgb
->rgbRed
, rgb
->rgbGreen
, rgb
->rgbBlue
);
866 /* If the second color is white, create a monochrome bitmap */
867 fColor
= (col
!= RGB(0xff,0xff,0xff));
869 /* Note : If the first color of the colormap is white
870 followed by black, we have to create a color bitmap.
871 If we don't the white will be displayed in black later on!*/
876 ERR("(%ld): wrong/unknown size for data\n",
877 data
->bmiHeader
.biSize
);
882 /* Now create the bitmap */
884 if (!(dc
= DC_GetDCPtr( hdc
))) return 0;
887 handle
= CreateBitmap( width
, height
, GetDeviceCaps( hdc
, PLANES
),
888 GetDeviceCaps( hdc
, BITSPIXEL
), NULL
);
889 else handle
= CreateBitmap( width
, height
, 1, 1, NULL
);
893 if (init
== CBM_INIT
) SetDIBits( hdc
, handle
, 0, height
, bits
, data
, coloruse
);
894 else if (!BITMAP_SetOwnerDC( handle
, dc
))
896 DeleteObject( handle
);
901 GDI_ReleaseObj( hdc
);
905 /***********************************************************************
906 * CreateDIBSection (GDI.489)
908 HBITMAP16 WINAPI
CreateDIBSection16 (HDC16 hdc
, BITMAPINFO
*bmi
, UINT16 usage
,
909 SEGPTR
*bits16
, HANDLE section
, DWORD offset
)
914 hbitmap
= CreateDIBSection( hdc
, bmi
, usage
, &bits32
, section
, offset
);
917 BITMAPOBJ
*bmp
= (BITMAPOBJ
*) GDI_GetObjPtr(hbitmap
, BITMAP_MAGIC
);
918 if (bmp
&& bmp
->dib
&& bits32
)
920 BITMAPINFOHEADER
*bi
= &bmi
->bmiHeader
;
921 INT height
= bi
->biHeight
>= 0 ? bi
->biHeight
: -bi
->biHeight
;
922 INT width_bytes
= DIB_GetDIBWidthBytes(bi
->biWidth
, bi
->biBitCount
);
923 INT size
= (bi
->biSizeImage
&& bi
->biCompression
!= BI_RGB
) ?
924 bi
->biSizeImage
: width_bytes
* height
;
926 /* calculate number of sel's needed for size with 64K steps */
927 WORD count
= (size
+ 0xffff) / 0x10000;
928 WORD sel
= AllocSelectorArray16(count
);
931 for (i
= 0; i
< count
; i
++)
933 SetSelectorBase(sel
+ (i
<< __AHSHIFT
), (DWORD
)bits32
+ i
* 0x10000);
934 SetSelectorLimit16(sel
+ (i
<< __AHSHIFT
), size
- 1); /* yep, limit is correct */
937 bmp
->segptr_bits
= MAKESEGPTR( sel
, 0 );
938 if (bits16
) *bits16
= bmp
->segptr_bits
;
940 if (bmp
) GDI_ReleaseObj( hbitmap
);
945 /***********************************************************************
946 * DIB_CreateDIBSection
948 HBITMAP
DIB_CreateDIBSection(HDC hdc
, BITMAPINFO
*bmi
, UINT usage
,
949 LPVOID
*bits
, HANDLE section
,
950 DWORD offset
, DWORD ovr_pitch
)
954 BOOL bDesktopDC
= FALSE
;
956 /* If the reference hdc is null, take the desktop dc */
959 hdc
= CreateCompatibleDC(0);
963 if ((dc
= DC_GetDCPtr( hdc
)))
965 hbitmap
= dc
->funcs
->pCreateDIBSection(dc
->physDev
, bmi
, usage
, bits
, section
, offset
, ovr_pitch
);
975 /***********************************************************************
976 * CreateDIBSection (GDI32.@)
978 HBITMAP WINAPI
CreateDIBSection(HDC hdc
, BITMAPINFO
*bmi
, UINT usage
,
979 LPVOID
*bits
, HANDLE section
,
982 return DIB_CreateDIBSection(hdc
, bmi
, usage
, bits
, section
, offset
, 0);
985 /***********************************************************************
986 * DIB_CreateDIBFromBitmap
987 * Allocates a packed DIB and copies the bitmap data into it.
989 HGLOBAL
DIB_CreateDIBFromBitmap(HDC hdc
, HBITMAP hBmp
)
991 BITMAPOBJ
*pBmp
= NULL
;
992 HGLOBAL hPackedDIB
= 0;
993 LPBYTE pPackedDIB
= NULL
;
994 LPBITMAPINFOHEADER pbmiHeader
= NULL
;
995 unsigned int width
, height
, depth
, cDataSize
= 0, cPackedSize
= 0,
996 OffsetBits
= 0, nLinesCopied
= 0;
998 /* Get a pointer to the BITMAPOBJ structure */
999 pBmp
= (BITMAPOBJ
*)GDI_GetObjPtr( hBmp
, BITMAP_MAGIC
);
1000 if (!pBmp
) return hPackedDIB
;
1002 /* Get the bitmap dimensions */
1003 width
= pBmp
->bitmap
.bmWidth
;
1004 height
= pBmp
->bitmap
.bmHeight
;
1005 depth
= pBmp
->bitmap
.bmBitsPixel
;
1008 * A packed DIB contains a BITMAPINFO structure followed immediately by
1009 * an optional color palette and the pixel data.
1012 /* Calculate the size of the packed DIB */
1013 cDataSize
= DIB_GetDIBImageBytes( width
, height
, depth
);
1014 cPackedSize
= sizeof(BITMAPINFOHEADER
)
1015 + ( (depth
<= 8) ? (sizeof(RGBQUAD
) * (1 << depth
)) : 0 )
1017 /* Get the offset to the bits */
1018 OffsetBits
= cPackedSize
- cDataSize
;
1020 /* Allocate the packed DIB */
1021 TRACE("\tAllocating packed DIB of size %d\n", cPackedSize
);
1022 hPackedDIB
= GlobalAlloc(GMEM_MOVEABLE
| GMEM_DDESHARE
/*| GMEM_ZEROINIT*/,
1026 WARN("Could not allocate packed DIB!\n");
1030 /* A packed DIB starts with a BITMAPINFOHEADER */
1031 pPackedDIB
= (LPBYTE
)GlobalLock(hPackedDIB
);
1032 pbmiHeader
= (LPBITMAPINFOHEADER
)pPackedDIB
;
1034 /* Init the BITMAPINFOHEADER */
1035 pbmiHeader
->biSize
= sizeof(BITMAPINFOHEADER
);
1036 pbmiHeader
->biWidth
= width
;
1037 pbmiHeader
->biHeight
= height
;
1038 pbmiHeader
->biPlanes
= 1;
1039 pbmiHeader
->biBitCount
= depth
;
1040 pbmiHeader
->biCompression
= BI_RGB
;
1041 pbmiHeader
->biSizeImage
= 0;
1042 pbmiHeader
->biXPelsPerMeter
= pbmiHeader
->biYPelsPerMeter
= 0;
1043 pbmiHeader
->biClrUsed
= 0;
1044 pbmiHeader
->biClrImportant
= 0;
1046 /* Retrieve the DIB bits from the bitmap and fill in the
1047 * DIB color table if present */
1049 nLinesCopied
= GetDIBits(hdc
, /* Handle to device context */
1050 hBmp
, /* Handle to bitmap */
1051 0, /* First scan line to set in dest bitmap */
1052 height
, /* Number of scan lines to copy */
1053 pPackedDIB
+ OffsetBits
, /* [out] Address of array for bitmap bits */
1054 (LPBITMAPINFO
) pbmiHeader
, /* [out] Address of BITMAPINFO structure */
1055 0); /* RGB or palette index */
1056 GlobalUnlock(hPackedDIB
);
1058 /* Cleanup if GetDIBits failed */
1059 if (nLinesCopied
!= height
)
1061 TRACE("\tGetDIBits returned %d. Actual lines=%d\n", nLinesCopied
, height
);
1062 GlobalFree(hPackedDIB
);
1067 GDI_ReleaseObj( hBmp
);