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
,
269 /* Check parameters */
270 if (!(dc
= DC_GetDCUpdate( hdc
))) return 0;
272 if (dc
->funcs
->pSetDIBits
)
273 result
= dc
->funcs
->pSetDIBits(dc
->physDev
, hbitmap
, startscan
, lines
, bits
, info
, coloruse
);
275 GDI_ReleaseObj( hdc
);
280 /***********************************************************************
281 * SetDIBitsToDevice (GDI.443)
283 INT16 WINAPI
SetDIBitsToDevice16(HDC16 hdc
, INT16 xDest
, INT16 yDest
, INT16 cx
,
284 INT16 cy
, INT16 xSrc
, INT16 ySrc
, UINT16 startscan
,
285 UINT16 lines
, LPCVOID bits
, const BITMAPINFO
*info
,
288 return SetDIBitsToDevice( hdc
, xDest
, yDest
, cx
, cy
, xSrc
, ySrc
,
289 startscan
, lines
, bits
, info
, coloruse
);
293 /***********************************************************************
294 * SetDIBitsToDevice (GDI32.@)
296 INT WINAPI
SetDIBitsToDevice(HDC hdc
, INT xDest
, INT yDest
, DWORD cx
,
297 DWORD cy
, INT xSrc
, INT ySrc
, UINT startscan
,
298 UINT lines
, LPCVOID bits
, const BITMAPINFO
*info
,
304 if (!(dc
= DC_GetDCUpdate( hdc
))) return 0;
306 if(dc
->funcs
->pSetDIBitsToDevice
)
307 ret
= dc
->funcs
->pSetDIBitsToDevice( dc
->physDev
, xDest
, yDest
, cx
, cy
, xSrc
,
308 ySrc
, startscan
, lines
, bits
,
311 FIXME("unimplemented on hdc %08x\n", hdc
);
315 GDI_ReleaseObj( hdc
);
319 /***********************************************************************
320 * SetDIBColorTable (GDI.602)
322 UINT16 WINAPI
SetDIBColorTable16( HDC16 hdc
, UINT16 startpos
, UINT16 entries
,
325 return SetDIBColorTable( hdc
, startpos
, entries
, colors
);
328 /***********************************************************************
329 * SetDIBColorTable (GDI32.@)
331 UINT WINAPI
SetDIBColorTable( HDC hdc
, UINT startpos
, UINT entries
, RGBQUAD
*colors
)
336 if (!(dc
= DC_GetDCUpdate( hdc
))) return 0;
338 if (dc
->funcs
->pSetDIBColorTable
)
339 result
= dc
->funcs
->pSetDIBColorTable(dc
->physDev
, startpos
, entries
, colors
);
341 GDI_ReleaseObj( hdc
);
345 /***********************************************************************
346 * GetDIBColorTable (GDI.603)
348 UINT16 WINAPI
GetDIBColorTable16( HDC16 hdc
, UINT16 startpos
, UINT16 entries
,
351 return GetDIBColorTable( hdc
, startpos
, entries
, colors
);
354 /***********************************************************************
355 * GetDIBColorTable (GDI32.@)
357 UINT WINAPI
GetDIBColorTable( HDC hdc
, UINT startpos
, UINT entries
, RGBQUAD
*colors
)
362 if (!(dc
= DC_GetDCUpdate( hdc
))) return 0;
364 if (dc
->funcs
->pGetDIBColorTable
)
365 result
= dc
->funcs
->pGetDIBColorTable(dc
->physDev
, startpos
, entries
, colors
);
367 GDI_ReleaseObj( hdc
);
371 /* FIXME the following two structs should be combined with __sysPalTemplate in
372 objects/color.c - this should happen after de-X11-ing both of these
374 NB. RGBQUAD and PALETTEENTRY have different orderings of red, green
377 static RGBQUAD EGAColors
[16] = {
378 /* rgbBlue, rgbGreen, rgbRed, rgbReserverd */
379 { 0x00, 0x00, 0x00, 0x00 },
380 { 0x00, 0x00, 0x80, 0x00 },
381 { 0x00, 0x80, 0x00, 0x00 },
382 { 0x00, 0x80, 0x80, 0x00 },
383 { 0x80, 0x00, 0x00, 0x00 },
384 { 0x80, 0x00, 0x80, 0x00 },
385 { 0x80, 0x80, 0x00, 0x00 },
386 { 0x80, 0x80, 0x80, 0x00 },
387 { 0xc0, 0xc0, 0xc0, 0x00 },
388 { 0x00, 0x00, 0xff, 0x00 },
389 { 0x00, 0xff, 0x00, 0x00 },
390 { 0x00, 0xff, 0xff, 0x00 },
391 { 0xff, 0x00, 0x00, 0x00 },
392 { 0xff, 0x00, 0xff, 0x00 },
393 { 0xff, 0xff, 0x00, 0x00 },
394 { 0xff, 0xff, 0xff, 0x00 }
398 static RGBQUAD DefLogPalette
[20] = { /* Copy of Default Logical Palette */
399 /* rgbBlue, rgbGreen, rgbRed, rgbReserverd */
400 { 0x00, 0x00, 0x00, 0x00 },
401 { 0x00, 0x00, 0x80, 0x00 },
402 { 0x00, 0x80, 0x00, 0x00 },
403 { 0x00, 0x80, 0x80, 0x00 },
404 { 0x80, 0x00, 0x00, 0x00 },
405 { 0x80, 0x00, 0x80, 0x00 },
406 { 0x80, 0x80, 0x00, 0x00 },
407 { 0xc0, 0xc0, 0xc0, 0x00 },
408 { 0xc0, 0xdc, 0xc0, 0x00 },
409 { 0xf0, 0xca, 0xa6, 0x00 },
410 { 0xf0, 0xfb, 0xff, 0x00 },
411 { 0xa4, 0xa0, 0xa0, 0x00 },
412 { 0x80, 0x80, 0x80, 0x00 },
413 { 0x00, 0x00, 0xf0, 0x00 },
414 { 0x00, 0xff, 0x00, 0x00 },
415 { 0x00, 0xff, 0xff, 0x00 },
416 { 0xff, 0x00, 0x00, 0x00 },
417 { 0xff, 0x00, 0xff, 0x00 },
418 { 0xff, 0xff, 0x00, 0x00 },
419 { 0xff, 0xff, 0xff, 0x00 }
422 /***********************************************************************
423 * GetDIBits (GDI.441)
425 INT16 WINAPI
GetDIBits16( HDC16 hdc
, HBITMAP16 hbitmap
, UINT16 startscan
,
426 UINT16 lines
, LPVOID bits
, BITMAPINFO
* info
,
429 return GetDIBits( hdc
, hbitmap
, startscan
, lines
, bits
, info
, coloruse
);
433 /******************************************************************************
434 * GetDIBits [GDI32.@] Retrieves bits of bitmap and copies to buffer
437 * Success: Number of scan lines copied from bitmap
440 * http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/func/src/f30_14.htm
442 INT WINAPI
GetDIBits(
443 HDC hdc
, /* [in] Handle to device context */
444 HBITMAP hbitmap
, /* [in] Handle to bitmap */
445 UINT startscan
, /* [in] First scan line to set in dest bitmap */
446 UINT lines
, /* [in] Number of scan lines to copy */
447 LPVOID bits
, /* [out] Address of array for bitmap bits */
448 BITMAPINFO
* info
, /* [out] Address of structure with bitmap data */
449 UINT coloruse
) /* [in] RGB or palette index */
453 PALETTEENTRY
* palEntry
;
454 PALETTEOBJ
* palette
;
458 if (!(dc
= DC_GetDCUpdate( hdc
))) return 0;
459 if (!(bmp
= (BITMAPOBJ
*)GDI_GetObjPtr( hbitmap
, BITMAP_MAGIC
)))
461 GDI_ReleaseObj( hdc
);
464 if (!(palette
= (PALETTEOBJ
*)GDI_GetObjPtr( dc
->hPalette
, PALETTE_MAGIC
)))
466 GDI_ReleaseObj( hdc
);
467 GDI_ReleaseObj( hbitmap
);
471 /* Transfer color info */
473 if (info
->bmiHeader
.biBitCount
<= 8 && info
->bmiHeader
.biBitCount
> 0 ) {
475 info
->bmiHeader
.biClrUsed
= 0;
477 if(info
->bmiHeader
.biBitCount
>= bmp
->bitmap
.bmBitsPixel
) {
478 palEntry
= palette
->logpalette
.palPalEntry
;
479 for (i
= 0; i
< (1 << bmp
->bitmap
.bmBitsPixel
); i
++, palEntry
++) {
480 if (coloruse
== DIB_RGB_COLORS
) {
481 info
->bmiColors
[i
].rgbRed
= palEntry
->peRed
;
482 info
->bmiColors
[i
].rgbGreen
= palEntry
->peGreen
;
483 info
->bmiColors
[i
].rgbBlue
= palEntry
->peBlue
;
484 info
->bmiColors
[i
].rgbReserved
= 0;
486 else ((WORD
*)info
->bmiColors
)[i
] = (WORD
)i
;
489 switch (info
->bmiHeader
.biBitCount
) {
491 info
->bmiColors
[0].rgbRed
= info
->bmiColors
[0].rgbGreen
=
492 info
->bmiColors
[0].rgbBlue
= 0;
493 info
->bmiColors
[0].rgbReserved
= 0;
494 info
->bmiColors
[1].rgbRed
= info
->bmiColors
[1].rgbGreen
=
495 info
->bmiColors
[1].rgbBlue
= 0xff;
496 info
->bmiColors
[1].rgbReserved
= 0;
500 memcpy(info
->bmiColors
, EGAColors
, sizeof(EGAColors
));
508 memcpy(info
->bmiColors
, DefLogPalette
,
509 10 * sizeof(RGBQUAD
));
510 memcpy(info
->bmiColors
+ 246, DefLogPalette
+ 10,
511 10 * sizeof(RGBQUAD
));
512 color
= info
->bmiColors
+ 10;
513 for(r
= 0; r
<= 5; r
++) /* FIXME */
514 for(g
= 0; g
<= 5; g
++)
515 for(b
= 0; b
<= 5; b
++) {
516 color
->rgbRed
= (r
* 0xff) / 5;
517 color
->rgbGreen
= (g
* 0xff) / 5;
518 color
->rgbBlue
= (b
* 0xff) / 5;
519 color
->rgbReserved
= 0;
527 GDI_ReleaseObj( dc
->hPalette
);
531 /* If the bitmap object already have a dib section that contains image data, get the bits from it */
532 if(bmp
->dib
&& bmp
->dib
->dsBm
.bmBitsPixel
>= 15 && info
->bmiHeader
.biBitCount
>= 15)
534 /*FIXME: Only RGB dibs supported for now */
535 unsigned int srcwidth
= bmp
->dib
->dsBm
.bmWidth
, srcwidthb
= bmp
->dib
->dsBm
.bmWidthBytes
;
536 int dstwidthb
= DIB_GetDIBWidthBytes( info
->bmiHeader
.biWidth
, info
->bmiHeader
.biBitCount
);
537 LPBYTE dbits
= bits
, sbits
= (LPBYTE
) bmp
->dib
->dsBm
.bmBits
+ (startscan
* srcwidthb
);
540 if ((info
->bmiHeader
.biHeight
< 0) ^ (bmp
->dib
->dsBmih
.biHeight
< 0))
542 dbits
= (LPBYTE
)bits
+ (dstwidthb
* (lines
-1));
543 dstwidthb
= -dstwidthb
;
546 switch( info
->bmiHeader
.biBitCount
) {
549 case 16: /* 16 bpp dstDIB */
551 LPWORD dstbits
= (LPWORD
)dbits
;
552 WORD rmask
= 0x7c00, gmask
= 0x03e0, bmask
= 0x001f;
554 /* FIXME: BI_BITFIELDS not supported yet */
556 switch(bmp
->dib
->dsBm
.bmBitsPixel
) {
558 case 16: /* 16 bpp srcDIB -> 16 bpp dstDIB */
560 /* FIXME: BI_BITFIELDS not supported yet */
561 for (y
= 0; y
< lines
; y
++, dbits
+=dstwidthb
, sbits
+=srcwidthb
)
562 memcpy(dbits
, sbits
, srcwidthb
);
566 case 24: /* 24 bpp srcDIB -> 16 bpp dstDIB */
568 LPBYTE srcbits
= sbits
;
570 for( y
= 0; y
< lines
; y
++) {
571 for( x
= 0; x
< srcwidth
; x
++, srcbits
+= 3)
572 *dstbits
++ = ((srcbits
[0] >> 3) & bmask
) |
573 (((WORD
)srcbits
[1] << 2) & gmask
) |
574 (((WORD
)srcbits
[2] << 7) & rmask
);
576 dstbits
= (LPWORD
)(dbits
+=dstwidthb
);
577 srcbits
= (sbits
+= srcwidthb
);
582 case 32: /* 32 bpp srcDIB -> 16 bpp dstDIB */
584 LPDWORD srcbits
= (LPDWORD
)sbits
;
587 for( y
= 0; y
< lines
; y
++) {
588 for( x
= 0; x
< srcwidth
; x
++ ) {
590 *dstbits
++ = (WORD
)(((val
>> 3) & bmask
) | ((val
>> 6) & gmask
) |
591 ((val
>> 9) & rmask
));
593 dstbits
= (LPWORD
)(dbits
+=dstwidthb
);
594 srcbits
= (LPDWORD
)(sbits
+=srcwidthb
);
599 default: /* ? bit bmp -> 16 bit DIB */
600 FIXME("15/16 bit DIB %d bit bitmap\n",
601 bmp
->bitmap
.bmBitsPixel
);
607 case 24: /* 24 bpp dstDIB */
609 LPBYTE dstbits
= dbits
;
611 switch(bmp
->dib
->dsBm
.bmBitsPixel
) {
613 case 16: /* 16 bpp srcDIB -> 24 bpp dstDIB */
615 LPWORD srcbits
= (LPWORD
)sbits
;
618 /* FIXME: BI_BITFIELDS not supported yet */
619 for( y
= 0; y
< lines
; y
++) {
620 for( x
= 0; x
< srcwidth
; x
++ ) {
622 *dstbits
++ = (BYTE
)(((val
<< 3) & 0xf8) | ((val
>> 2) & 0x07));
623 *dstbits
++ = (BYTE
)(((val
>> 2) & 0xf8) | ((val
>> 7) & 0x07));
624 *dstbits
++ = (BYTE
)(((val
>> 7) & 0xf8) | ((val
>> 12) & 0x07));
626 dstbits
= (LPBYTE
)(dbits
+=dstwidthb
);
627 srcbits
= (LPWORD
)(sbits
+=srcwidthb
);
632 case 24: /* 24 bpp srcDIB -> 24 bpp dstDIB */
634 for (y
= 0; y
< lines
; y
++, dbits
+=dstwidthb
, sbits
+=srcwidthb
)
635 memcpy(dbits
, sbits
, srcwidthb
);
639 case 32: /* 32 bpp srcDIB -> 24 bpp dstDIB */
641 LPBYTE srcbits
= (LPBYTE
)sbits
;
643 for( y
= 0; y
< lines
; y
++) {
644 for( x
= 0; x
< srcwidth
; x
++, srcbits
++ ) {
645 *dstbits
++ = *srcbits
++;
646 *dstbits
++ = *srcbits
++;
647 *dstbits
++ = *srcbits
++;
649 dstbits
=(LPBYTE
)(dbits
+=dstwidthb
);
650 srcbits
= (LPBYTE
)(sbits
+=srcwidthb
);
655 default: /* ? bit bmp -> 24 bit DIB */
656 FIXME("24 bit DIB %d bit bitmap\n",
657 bmp
->bitmap
.bmBitsPixel
);
663 case 32: /* 32 bpp dstDIB */
665 LPDWORD dstbits
= (LPDWORD
)dbits
;
667 /* FIXME: BI_BITFIELDS not supported yet */
669 switch(bmp
->dib
->dsBm
.bmBitsPixel
) {
670 case 16: /* 16 bpp srcDIB -> 32 bpp dstDIB */
672 LPWORD srcbits
= (LPWORD
)sbits
;
675 /* FIXME: BI_BITFIELDS not supported yet */
676 for( y
= 0; y
< lines
; y
++) {
677 for( x
= 0; x
< srcwidth
; x
++ ) {
678 val
= (DWORD
)*srcbits
++;
679 *dstbits
++ = ((val
<< 3) & 0xf8) | ((val
>> 2) & 0x07) |
680 ((val
<< 6) & 0xf800) | ((val
<< 1) & 0x0700) |
681 ((val
<< 9) & 0xf80000) | ((val
<< 4) & 0x070000);
683 dstbits
=(LPDWORD
)(dbits
+=dstwidthb
);
684 srcbits
=(LPWORD
)(sbits
+=srcwidthb
);
689 case 24: /* 24 bpp srcDIB -> 32 bpp dstDIB */
691 LPBYTE srcbits
= sbits
;
693 for( y
= 0; y
< lines
; y
++) {
694 for( x
= 0; x
< srcwidth
; x
++, srcbits
+=3 )
695 *dstbits
++ = ((DWORD
)*srcbits
) & 0x00ffffff;
696 dstbits
=(LPDWORD
)(dbits
+=dstwidthb
);
697 srcbits
=(sbits
+=srcwidthb
);
702 case 32: /* 32 bpp srcDIB -> 16 bpp dstDIB */
704 /* FIXME: BI_BITFIELDS not supported yet */
705 for (y
= 0; y
< lines
; y
++, dbits
+=dstwidthb
, sbits
+=srcwidthb
)
706 memcpy(dbits
, sbits
, srcwidthb
);
710 default: /* ? bit bmp -> 16 bit DIB */
711 FIXME("15/16 bit DIB %d bit bitmap\n",
712 bmp
->bitmap
.bmBitsPixel
);
718 default: /* ? bit DIB */
719 FIXME("Unsupported DIB depth %d\n", info
->bmiHeader
.biBitCount
);
723 /* Otherwise, get bits from the XImage */
724 else if (!dc
->funcs
->pGetDIBits
||
725 !dc
->funcs
->pGetDIBits(dc
->physDev
, hbitmap
, startscan
, lines
, bits
, info
, coloruse
))
727 GDI_ReleaseObj( hdc
);
728 GDI_ReleaseObj( hbitmap
);
733 else if( info
->bmiHeader
.biSize
>= sizeof(BITMAPINFOHEADER
) )
735 /* fill in struct members */
737 if( info
->bmiHeader
.biBitCount
== 0)
739 info
->bmiHeader
.biWidth
= bmp
->bitmap
.bmWidth
;
740 info
->bmiHeader
.biHeight
= bmp
->bitmap
.bmHeight
;
741 info
->bmiHeader
.biPlanes
= 1;
742 info
->bmiHeader
.biBitCount
= bmp
->bitmap
.bmBitsPixel
;
743 info
->bmiHeader
.biSizeImage
=
744 DIB_GetDIBImageBytes( bmp
->bitmap
.bmWidth
,
745 bmp
->bitmap
.bmHeight
,
746 bmp
->bitmap
.bmBitsPixel
);
747 info
->bmiHeader
.biCompression
= 0;
751 info
->bmiHeader
.biSizeImage
= DIB_GetDIBImageBytes(
752 info
->bmiHeader
.biWidth
,
753 info
->bmiHeader
.biHeight
,
754 info
->bmiHeader
.biBitCount
);
758 TRACE("biSizeImage = %ld, biWidth = %ld, biHeight = %ld\n",
759 info
->bmiHeader
.biSizeImage
, info
->bmiHeader
.biWidth
,
760 info
->bmiHeader
.biHeight
);
762 GDI_ReleaseObj( hdc
);
763 GDI_ReleaseObj( hbitmap
);
769 /***********************************************************************
770 * CreateDIBitmap (GDI.442)
772 HBITMAP16 WINAPI
CreateDIBitmap16( HDC16 hdc
, const BITMAPINFOHEADER
* header
,
773 DWORD init
, LPCVOID bits
, const BITMAPINFO
* data
,
776 return CreateDIBitmap( hdc
, header
, init
, bits
, data
, coloruse
);
780 /***********************************************************************
781 * CreateDIBitmap (GDI32.@)
783 HBITMAP WINAPI
CreateDIBitmap( HDC hdc
, const BITMAPINFOHEADER
*header
,
784 DWORD init
, LPCVOID bits
, const BITMAPINFO
*data
,
794 if (DIB_GetBitmapInfo( header
, &width
, &height
, &bpp
, &compr
) == -1) return 0;
795 if (height
< 0) height
= -height
;
797 /* Check if we should create a monochrome or color bitmap. */
798 /* We create a monochrome bitmap only if it has exactly 2 */
799 /* colors, which are black followed by white, nothing else. */
800 /* In all other cases, we create a color bitmap. */
802 if (bpp
!= 1) fColor
= TRUE
;
803 else if ((coloruse
!= DIB_RGB_COLORS
) ||
804 (init
!= CBM_INIT
) || !data
) fColor
= FALSE
;
807 if (data
->bmiHeader
.biSize
== sizeof(BITMAPINFOHEADER
))
809 RGBQUAD
*rgb
= data
->bmiColors
;
810 DWORD col
= RGB( rgb
->rgbRed
, rgb
->rgbGreen
, rgb
->rgbBlue
);
812 /* Check if the first color of the colormap is black */
813 if ((col
== RGB(0,0,0)))
816 col
= RGB( rgb
->rgbRed
, rgb
->rgbGreen
, rgb
->rgbBlue
);
817 /* If the second color is white, create a monochrome bitmap */
818 fColor
= (col
!= RGB(0xff,0xff,0xff));
820 /* Note : If the first color of the colormap is white
821 followed by black, we have to create a color bitmap.
822 If we don't the white will be displayed in black later on!*/
825 else if (data
->bmiHeader
.biSize
== sizeof(BITMAPCOREHEADER
))
827 RGBTRIPLE
*rgb
= ((BITMAPCOREINFO
*)data
)->bmciColors
;
828 DWORD col
= RGB( rgb
->rgbtRed
, rgb
->rgbtGreen
, rgb
->rgbtBlue
);
829 if ((col
== RGB(0,0,0)))
832 col
= RGB( rgb
->rgbtRed
, rgb
->rgbtGreen
, rgb
->rgbtBlue
);
833 fColor
= (col
!= RGB(0xff,0xff,0xff));
837 else if (data
->bmiHeader
.biSize
== sizeof(BITMAPV4HEADER
))
838 { /* FIXME: correct ? */
839 RGBQUAD
*rgb
= data
->bmiColors
;
840 DWORD col
= RGB( rgb
->rgbRed
, rgb
->rgbGreen
, rgb
->rgbBlue
);
842 /* Check if the first color of the colormap is black */
843 if ((col
== RGB(0,0,0)))
846 col
= RGB( rgb
->rgbRed
, rgb
->rgbGreen
, rgb
->rgbBlue
);
847 /* If the second color is white, create a monochrome bitmap */
848 fColor
= (col
!= RGB(0xff,0xff,0xff));
850 /* Note : If the first color of the colormap is white
851 followed by black, we have to create a color bitmap.
852 If we don't the white will be displayed in black later on!*/
857 ERR("(%ld): wrong/unknown size for data\n",
858 data
->bmiHeader
.biSize
);
863 /* Now create the bitmap */
866 handle
= CreateBitmap( width
, height
, GetDeviceCaps( hdc
, PLANES
),
867 GetDeviceCaps( hdc
, BITSPIXEL
), NULL
);
868 else handle
= CreateBitmap( width
, height
, 1, 1, NULL
);
870 if (!handle
) return 0;
872 if (init
== CBM_INIT
)
873 SetDIBits( hdc
, handle
, 0, height
, bits
, data
, coloruse
);
877 /***********************************************************************
878 * CreateDIBSection (GDI.489)
880 HBITMAP16 WINAPI
CreateDIBSection16 (HDC16 hdc
, BITMAPINFO
*bmi
, UINT16 usage
,
881 SEGPTR
*bits16
, HANDLE section
, DWORD offset
)
886 hbitmap
= CreateDIBSection( hdc
, bmi
, usage
, &bits32
, section
, offset
);
889 BITMAPOBJ
*bmp
= (BITMAPOBJ
*) GDI_GetObjPtr(hbitmap
, BITMAP_MAGIC
);
890 if (bmp
&& bmp
->dib
&& bits32
)
892 BITMAPINFOHEADER
*bi
= &bmi
->bmiHeader
;
893 INT height
= bi
->biHeight
>= 0 ? bi
->biHeight
: -bi
->biHeight
;
894 INT width_bytes
= DIB_GetDIBWidthBytes(bi
->biWidth
, bi
->biBitCount
);
895 INT size
= (bi
->biSizeImage
&& bi
->biCompression
!= BI_RGB
) ?
896 bi
->biSizeImage
: width_bytes
* height
;
898 WORD sel
= SELECTOR_AllocBlock( bits32
, size
, WINE_LDT_FLAGS_DATA
);
899 bmp
->segptr_bits
= MAKESEGPTR( sel
, 0 );
900 if (bits16
) *bits16
= bmp
->segptr_bits
;
902 if (bmp
) GDI_ReleaseObj( hbitmap
);
907 /***********************************************************************
908 * DIB_CreateDIBSection
910 HBITMAP
DIB_CreateDIBSection(HDC hdc
, BITMAPINFO
*bmi
, UINT usage
,
911 LPVOID
*bits
, HANDLE section
,
912 DWORD offset
, DWORD ovr_pitch
)
916 BOOL bDesktopDC
= FALSE
;
918 /* If the reference hdc is null, take the desktop dc */
921 hdc
= CreateCompatibleDC(0);
925 if ((dc
= DC_GetDCPtr( hdc
)))
927 hbitmap
= dc
->funcs
->pCreateDIBSection(dc
->physDev
, bmi
, usage
, bits
, section
, offset
, ovr_pitch
);
937 /***********************************************************************
938 * CreateDIBSection (GDI32.@)
940 HBITMAP WINAPI
CreateDIBSection(HDC hdc
, BITMAPINFO
*bmi
, UINT usage
,
941 LPVOID
*bits
, HANDLE section
,
944 return DIB_CreateDIBSection(hdc
, bmi
, usage
, bits
, section
, offset
, 0);
947 /***********************************************************************
948 * DIB_CreateDIBFromBitmap
949 * Allocates a packed DIB and copies the bitmap data into it.
951 HGLOBAL
DIB_CreateDIBFromBitmap(HDC hdc
, HBITMAP hBmp
)
953 BITMAPOBJ
*pBmp
= NULL
;
954 HGLOBAL hPackedDIB
= 0;
955 LPBYTE pPackedDIB
= NULL
;
956 LPBITMAPINFOHEADER pbmiHeader
= NULL
;
957 unsigned int width
, height
, depth
, cDataSize
= 0, cPackedSize
= 0,
958 OffsetBits
= 0, nLinesCopied
= 0;
960 /* Get a pointer to the BITMAPOBJ structure */
961 pBmp
= (BITMAPOBJ
*)GDI_GetObjPtr( hBmp
, BITMAP_MAGIC
);
962 if (!pBmp
) return hPackedDIB
;
964 /* Get the bitmap dimensions */
965 width
= pBmp
->bitmap
.bmWidth
;
966 height
= pBmp
->bitmap
.bmHeight
;
967 depth
= pBmp
->bitmap
.bmBitsPixel
;
970 * A packed DIB contains a BITMAPINFO structure followed immediately by
971 * an optional color palette and the pixel data.
974 /* Calculate the size of the packed DIB */
975 cDataSize
= DIB_GetDIBImageBytes( width
, height
, depth
);
976 cPackedSize
= sizeof(BITMAPINFOHEADER
)
977 + ( (depth
<= 8) ? (sizeof(RGBQUAD
) * (1 << depth
)) : 0 )
979 /* Get the offset to the bits */
980 OffsetBits
= cPackedSize
- cDataSize
;
982 /* Allocate the packed DIB */
983 TRACE("\tAllocating packed DIB of size %d\n", cPackedSize
);
984 hPackedDIB
= GlobalAlloc(GMEM_MOVEABLE
| GMEM_DDESHARE
/*| GMEM_ZEROINIT*/,
988 WARN("Could not allocate packed DIB!\n");
992 /* A packed DIB starts with a BITMAPINFOHEADER */
993 pPackedDIB
= (LPBYTE
)GlobalLock(hPackedDIB
);
994 pbmiHeader
= (LPBITMAPINFOHEADER
)pPackedDIB
;
996 /* Init the BITMAPINFOHEADER */
997 pbmiHeader
->biSize
= sizeof(BITMAPINFOHEADER
);
998 pbmiHeader
->biWidth
= width
;
999 pbmiHeader
->biHeight
= height
;
1000 pbmiHeader
->biPlanes
= 1;
1001 pbmiHeader
->biBitCount
= depth
;
1002 pbmiHeader
->biCompression
= BI_RGB
;
1003 pbmiHeader
->biSizeImage
= 0;
1004 pbmiHeader
->biXPelsPerMeter
= pbmiHeader
->biYPelsPerMeter
= 0;
1005 pbmiHeader
->biClrUsed
= 0;
1006 pbmiHeader
->biClrImportant
= 0;
1008 /* Retrieve the DIB bits from the bitmap and fill in the
1009 * DIB color table if present */
1011 nLinesCopied
= GetDIBits(hdc
, /* Handle to device context */
1012 hBmp
, /* Handle to bitmap */
1013 0, /* First scan line to set in dest bitmap */
1014 height
, /* Number of scan lines to copy */
1015 pPackedDIB
+ OffsetBits
, /* [out] Address of array for bitmap bits */
1016 (LPBITMAPINFO
) pbmiHeader
, /* [out] Address of BITMAPINFO structure */
1017 0); /* RGB or palette index */
1018 GlobalUnlock(hPackedDIB
);
1020 /* Cleanup if GetDIBits failed */
1021 if (nLinesCopied
!= height
)
1023 TRACE("\tGetDIBits returned %d. Actual lines=%d\n", nLinesCopied
, height
);
1024 GlobalFree(hPackedDIB
);
1029 GDI_ReleaseObj( hBmp
);