2 * GDI device-independent bitmaps
4 * Copyright 1993,1994 Alexandre Julliard
12 #include "debugtools.h"
15 DEFAULT_DEBUG_CHANNEL(bitmap
);
17 /***********************************************************************
18 * DIB_GetDIBWidthBytes
20 * Return the width of a DIB bitmap in bytes. DIB bitmap data is 32-bit aligned.
21 * http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/struc/src/str01.htm
23 int DIB_GetDIBWidthBytes( int width
, int depth
)
29 case 1: words
= (width
+ 31) / 32; break;
30 case 4: words
= (width
+ 7) / 8; break;
31 case 8: words
= (width
+ 3) / 4; break;
33 case 16: words
= (width
+ 1) / 2; break;
34 case 24: words
= (width
* 3 + 3)/4; break;
37 WARN("(%d): Unsupported depth\n", depth
);
45 /***********************************************************************
46 * DIB_GetDIBImageBytes
48 * Return the number of bytes used to hold the image in a DIB bitmap.
50 int DIB_GetDIBImageBytes( int width
, int height
, int depth
)
52 return DIB_GetDIBWidthBytes( width
, depth
) * abs( height
);
56 /***********************************************************************
59 * Return the size of the bitmap info structure including color table.
61 int DIB_BitmapInfoSize( const BITMAPINFO
* info
, WORD coloruse
)
65 if (info
->bmiHeader
.biSize
== sizeof(BITMAPCOREHEADER
))
67 BITMAPCOREHEADER
*core
= (BITMAPCOREHEADER
*)info
;
68 colors
= (core
->bcBitCount
<= 8) ? 1 << core
->bcBitCount
: 0;
69 return sizeof(BITMAPCOREHEADER
) + colors
*
70 ((coloruse
== DIB_RGB_COLORS
) ? sizeof(RGBTRIPLE
) : sizeof(WORD
));
72 else /* assume BITMAPINFOHEADER */
74 colors
= info
->bmiHeader
.biClrUsed
;
75 if (!colors
&& (info
->bmiHeader
.biBitCount
<= 8))
76 colors
= 1 << info
->bmiHeader
.biBitCount
;
77 return sizeof(BITMAPINFOHEADER
) + colors
*
78 ((coloruse
== DIB_RGB_COLORS
) ? sizeof(RGBQUAD
) : sizeof(WORD
));
83 /***********************************************************************
86 * Get the info from a bitmap header.
87 * Return 1 for INFOHEADER, 0 for COREHEADER, -1 for error.
89 int DIB_GetBitmapInfo( const BITMAPINFOHEADER
*header
, DWORD
*width
,
90 int *height
, WORD
*bpp
, WORD
*compr
)
92 if (header
->biSize
== sizeof(BITMAPINFOHEADER
))
94 *width
= header
->biWidth
;
95 *height
= header
->biHeight
;
96 *bpp
= header
->biBitCount
;
97 *compr
= header
->biCompression
;
100 if (header
->biSize
== sizeof(BITMAPCOREHEADER
))
102 BITMAPCOREHEADER
*core
= (BITMAPCOREHEADER
*)header
;
103 *width
= core
->bcWidth
;
104 *height
= core
->bcHeight
;
105 *bpp
= core
->bcBitCount
;
109 WARN("(%ld): wrong size for header\n", header
->biSize
);
114 /***********************************************************************
115 * StretchDIBits16 (GDI.439)
117 INT16 WINAPI
StretchDIBits16(HDC16 hdc
, INT16 xDst
, INT16 yDst
, INT16 widthDst
,
118 INT16 heightDst
, INT16 xSrc
, INT16 ySrc
, INT16 widthSrc
,
119 INT16 heightSrc
, const VOID
*bits
,
120 const BITMAPINFO
*info
, UINT16 wUsage
, DWORD dwRop
)
122 return (INT16
)StretchDIBits( hdc
, xDst
, yDst
, widthDst
, heightDst
,
123 xSrc
, ySrc
, widthSrc
, heightSrc
, bits
,
124 info
, wUsage
, dwRop
);
128 /***********************************************************************
129 * StretchDIBits (GDI32.351)
131 INT WINAPI
StretchDIBits(HDC hdc
, INT xDst
, INT yDst
, INT widthDst
,
132 INT heightDst
, INT xSrc
, INT ySrc
, INT widthSrc
,
133 INT heightSrc
, const void *bits
,
134 const BITMAPINFO
*info
, UINT wUsage
, DWORD dwRop
)
136 DC
*dc
= DC_GetDCUpdate( hdc
);
137 if(!dc
) return FALSE
;
139 if(dc
->funcs
->pStretchDIBits
)
140 heightSrc
= dc
->funcs
->pStretchDIBits(dc
, xDst
, yDst
, widthDst
,
141 heightDst
, xSrc
, ySrc
, widthSrc
,
142 heightSrc
, bits
, info
, wUsage
,
144 else { /* use StretchBlt */
145 HBITMAP hBitmap
, hOldBitmap
;
148 hBitmap
= CreateDIBitmap( hdc
, &info
->bmiHeader
, CBM_INIT
,
149 bits
, info
, wUsage
);
150 hdcMem
= CreateCompatibleDC( hdc
);
151 hOldBitmap
= SelectObject( hdcMem
, hBitmap
);
152 /* Origin for DIBitmap may be bottom left (positive biHeight) or top
153 left (negative biHeight) */
154 StretchBlt( hdc
, xDst
, yDst
, widthDst
, heightDst
,
155 hdcMem
, xSrc
, abs(info
->bmiHeader
.biHeight
) - heightSrc
- ySrc
,
156 widthSrc
, heightSrc
, dwRop
);
157 SelectObject( hdcMem
, hOldBitmap
);
159 DeleteObject( hBitmap
);
161 GDI_ReleaseObj( hdc
);
166 /***********************************************************************
167 * SetDIBits16 (GDI.440)
169 INT16 WINAPI
SetDIBits16( HDC16 hdc
, HBITMAP16 hbitmap
, UINT16 startscan
,
170 UINT16 lines
, LPCVOID bits
, const BITMAPINFO
*info
,
173 return SetDIBits( hdc
, hbitmap
, startscan
, lines
, bits
, info
, coloruse
);
177 /******************************************************************************
178 * SetDIBits [GDI32.312] Sets pixels in a bitmap using colors from DIB
181 * hdc [I] Handle to device context
182 * hbitmap [I] Handle to bitmap
183 * startscan [I] Starting scan line
184 * lines [I] Number of scan lines
185 * bits [I] Array of bitmap bits
186 * info [I] Address of structure with data
187 * coloruse [I] Type of color indexes to use
190 * Success: Number of scan lines copied
193 INT WINAPI
SetDIBits( HDC hdc
, HBITMAP hbitmap
, UINT startscan
,
194 UINT lines
, LPCVOID bits
, const BITMAPINFO
*info
,
201 /* Check parameters */
202 if (!(dc
= DC_GetDCUpdate( hdc
))) return 0;
204 if (!(bitmap
= (BITMAPOBJ
*) GDI_GetObjPtr( hbitmap
, BITMAP_MAGIC
)))
206 GDI_ReleaseObj( hdc
);
210 result
= BITMAP_Driver
->pSetDIBits(bitmap
, dc
, startscan
,
214 GDI_ReleaseObj( hbitmap
);
215 GDI_ReleaseObj( hdc
);
221 /***********************************************************************
222 * SetDIBitsToDevice16 (GDI.443)
224 INT16 WINAPI
SetDIBitsToDevice16(HDC16 hdc
, INT16 xDest
, INT16 yDest
, INT16 cx
,
225 INT16 cy
, INT16 xSrc
, INT16 ySrc
, UINT16 startscan
,
226 UINT16 lines
, LPCVOID bits
, const BITMAPINFO
*info
,
229 return SetDIBitsToDevice( hdc
, xDest
, yDest
, cx
, cy
, xSrc
, ySrc
,
230 startscan
, lines
, bits
, info
, coloruse
);
234 /***********************************************************************
235 * SetDIBitsToDevice (GDI32.313)
237 INT WINAPI
SetDIBitsToDevice(HDC hdc
, INT xDest
, INT yDest
, DWORD cx
,
238 DWORD cy
, INT xSrc
, INT ySrc
, UINT startscan
,
239 UINT lines
, LPCVOID bits
, const BITMAPINFO
*info
,
245 if (!(dc
= DC_GetDCUpdate( hdc
))) return 0;
247 if(dc
->funcs
->pSetDIBitsToDevice
)
248 ret
= dc
->funcs
->pSetDIBitsToDevice( dc
, xDest
, yDest
, cx
, cy
, xSrc
,
249 ySrc
, startscan
, lines
, bits
,
252 FIXME("unimplemented on hdc %08x\n", hdc
);
256 GDI_ReleaseObj( hdc
);
260 /***********************************************************************
261 * SetDIBColorTable16 (GDI.602)
263 UINT16 WINAPI
SetDIBColorTable16( HDC16 hdc
, UINT16 startpos
, UINT16 entries
,
266 return SetDIBColorTable( hdc
, startpos
, entries
, colors
);
269 /***********************************************************************
270 * SetDIBColorTable (GDI32.311)
272 UINT WINAPI
SetDIBColorTable( HDC hdc
, UINT startpos
, UINT entries
,
276 PALETTEENTRY
* palEntry
;
277 PALETTEOBJ
* palette
;
280 if (!(dc
= DC_GetDCUpdate( hdc
))) return 0;
282 if (!(palette
= (PALETTEOBJ
*)GDI_GetObjPtr( dc
->w
.hPalette
, PALETTE_MAGIC
)))
284 GDI_ReleaseObj( hdc
);
288 /* Transfer color info */
290 if (dc
->w
.bitsPerPixel
<= 8) {
291 palEntry
= palette
->logpalette
.palPalEntry
+ startpos
;
292 if (startpos
+ entries
> (1 << dc
->w
.bitsPerPixel
))
293 entries
= (1 << dc
->w
.bitsPerPixel
) - startpos
;
295 if (startpos
+ entries
> palette
->logpalette
.palNumEntries
)
296 entries
= palette
->logpalette
.palNumEntries
- startpos
;
298 for (end
= colors
+ entries
; colors
< end
; palEntry
++, colors
++)
300 palEntry
->peRed
= colors
->rgbRed
;
301 palEntry
->peGreen
= colors
->rgbGreen
;
302 palEntry
->peBlue
= colors
->rgbBlue
;
307 GDI_ReleaseObj( dc
->w
.hPalette
);
308 GDI_ReleaseObj( hdc
);
312 /***********************************************************************
313 * GetDIBColorTable16 (GDI.603)
315 UINT16 WINAPI
GetDIBColorTable16( HDC16 hdc
, UINT16 startpos
, UINT16 entries
,
318 return GetDIBColorTable( hdc
, startpos
, entries
, colors
);
321 /***********************************************************************
322 * GetDIBColorTable (GDI32.169)
324 UINT WINAPI
GetDIBColorTable( HDC hdc
, UINT startpos
, UINT entries
,
328 PALETTEENTRY
* palEntry
;
329 PALETTEOBJ
* palette
;
332 if (!(dc
= DC_GetDCUpdate( hdc
))) return 0;
334 if (!(palette
= (PALETTEOBJ
*)GDI_GetObjPtr( dc
->w
.hPalette
, PALETTE_MAGIC
)))
336 GDI_ReleaseObj( hdc
);
340 /* Transfer color info */
342 if (dc
->w
.bitsPerPixel
<= 8) {
343 palEntry
= palette
->logpalette
.palPalEntry
+ startpos
;
344 if (startpos
+ entries
> (1 << dc
->w
.bitsPerPixel
)) {
345 entries
= (1 << dc
->w
.bitsPerPixel
) - startpos
;
347 for (end
= colors
+ entries
; colors
< end
; palEntry
++, colors
++)
349 colors
->rgbRed
= palEntry
->peRed
;
350 colors
->rgbGreen
= palEntry
->peGreen
;
351 colors
->rgbBlue
= palEntry
->peBlue
;
352 colors
->rgbReserved
= 0;
357 GDI_ReleaseObj( dc
->w
.hPalette
);
358 GDI_ReleaseObj( hdc
);
362 /* FIXME the following two structs should be combined with __sysPalTemplate in
363 objects/color.c - this should happen after de-X11-ing both of these
365 NB. RGBQUAD and PALETTENTRY have different orderings of red, green
368 static RGBQUAD EGAColors
[16] = {
369 /* rgbBlue, rgbGreen, rgbRed, rgbReserverd */
370 { 0x00, 0x00, 0x00, 0x00 },
371 { 0x00, 0x00, 0x80, 0x00 },
372 { 0x00, 0x80, 0x00, 0x00 },
373 { 0x00, 0x80, 0x80, 0x00 },
374 { 0x80, 0x00, 0x00, 0x00 },
375 { 0x80, 0x00, 0x80, 0x00 },
376 { 0x80, 0x80, 0x00, 0x00 },
377 { 0x80, 0x80, 0x80, 0x00 },
378 { 0xc0, 0xc0, 0xc0, 0x00 },
379 { 0x00, 0x00, 0xff, 0x00 },
380 { 0x00, 0xff, 0x00, 0x00 },
381 { 0x00, 0xff, 0xff, 0x00 },
382 { 0xff, 0x00, 0x00, 0x00 },
383 { 0xff, 0x00, 0xff, 0x00 },
384 { 0xff, 0xff, 0x00, 0x00 },
385 { 0xff, 0xff, 0xff, 0x00 }
389 static RGBQUAD DefLogPalette
[20] = { /* Copy of Default Logical Palette */
390 /* rgbBlue, rgbGreen, rgbRed, rgbReserverd */
391 { 0x00, 0x00, 0x00, 0x00 },
392 { 0x00, 0x00, 0x80, 0x00 },
393 { 0x00, 0x80, 0x00, 0x00 },
394 { 0x00, 0x80, 0x80, 0x00 },
395 { 0x80, 0x00, 0x00, 0x00 },
396 { 0x80, 0x00, 0x80, 0x00 },
397 { 0x80, 0x80, 0x00, 0x00 },
398 { 0xc0, 0xc0, 0xc0, 0x00 },
399 { 0xc0, 0xdc, 0xc0, 0x00 },
400 { 0xf0, 0xca, 0xa6, 0x00 },
401 { 0xf0, 0xfb, 0xff, 0x00 },
402 { 0xa4, 0xa0, 0xa0, 0x00 },
403 { 0x80, 0x80, 0x80, 0x00 },
404 { 0x00, 0x00, 0xf0, 0x00 },
405 { 0x00, 0xff, 0x00, 0x00 },
406 { 0x00, 0xff, 0xff, 0x00 },
407 { 0xff, 0x00, 0x00, 0x00 },
408 { 0xff, 0x00, 0xff, 0x00 },
409 { 0xff, 0xff, 0x00, 0x00 },
410 { 0xff, 0xff, 0xff, 0x00 }
413 /***********************************************************************
414 * GetDIBits16 (GDI.441)
416 INT16 WINAPI
GetDIBits16( HDC16 hdc
, HBITMAP16 hbitmap
, UINT16 startscan
,
417 UINT16 lines
, LPVOID bits
, BITMAPINFO
* info
,
420 return GetDIBits( hdc
, hbitmap
, startscan
, lines
, bits
, info
, coloruse
);
424 /******************************************************************************
425 * GetDIBits [GDI32.170] Retrieves bits of bitmap and copies to buffer
428 * Success: Number of scan lines copied from bitmap
431 * http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/func/src/f30_14.htm
433 INT WINAPI
GetDIBits(
434 HDC hdc
, /* [in] Handle to device context */
435 HBITMAP hbitmap
, /* [in] Handle to bitmap */
436 UINT startscan
, /* [in] First scan line to set in dest bitmap */
437 UINT lines
, /* [in] Number of scan lines to copy */
438 LPVOID bits
, /* [out] Address of array for bitmap bits */
439 BITMAPINFO
* info
, /* [out] Address of structure with bitmap data */
440 UINT coloruse
) /* [in] RGB or palette index */
444 PALETTEENTRY
* palEntry
;
445 PALETTEOBJ
* palette
;
449 if (!(dc
= DC_GetDCUpdate( hdc
))) return 0;
450 if (!(bmp
= (BITMAPOBJ
*)GDI_GetObjPtr( hbitmap
, BITMAP_MAGIC
)))
452 GDI_ReleaseObj( hdc
);
455 if (!(palette
= (PALETTEOBJ
*)GDI_GetObjPtr( dc
->w
.hPalette
, PALETTE_MAGIC
)))
457 GDI_ReleaseObj( hdc
);
458 GDI_ReleaseObj( hbitmap
);
462 /* Transfer color info */
464 if (info
->bmiHeader
.biBitCount
<= 8 && info
->bmiHeader
.biBitCount
> 0 ) {
466 info
->bmiHeader
.biClrUsed
= 0;
468 if(info
->bmiHeader
.biBitCount
>= bmp
->bitmap
.bmBitsPixel
) {
469 palEntry
= palette
->logpalette
.palPalEntry
;
470 for (i
= 0; i
< (1 << bmp
->bitmap
.bmBitsPixel
); i
++, palEntry
++) {
471 if (coloruse
== DIB_RGB_COLORS
) {
472 info
->bmiColors
[i
].rgbRed
= palEntry
->peRed
;
473 info
->bmiColors
[i
].rgbGreen
= palEntry
->peGreen
;
474 info
->bmiColors
[i
].rgbBlue
= palEntry
->peBlue
;
475 info
->bmiColors
[i
].rgbReserved
= 0;
477 else ((WORD
*)info
->bmiColors
)[i
] = (WORD
)i
;
480 switch (info
->bmiHeader
.biBitCount
) {
482 info
->bmiColors
[0].rgbRed
= info
->bmiColors
[0].rgbGreen
=
483 info
->bmiColors
[0].rgbBlue
= 0;
484 info
->bmiColors
[0].rgbReserved
= 0;
485 info
->bmiColors
[1].rgbRed
= info
->bmiColors
[1].rgbGreen
=
486 info
->bmiColors
[1].rgbBlue
= 0xff;
487 info
->bmiColors
[1].rgbReserved
= 0;
491 memcpy(info
->bmiColors
, EGAColors
, sizeof(EGAColors
));
499 memcpy(info
->bmiColors
, DefLogPalette
,
500 10 * sizeof(RGBQUAD
));
501 memcpy(info
->bmiColors
+ 246, DefLogPalette
+ 10,
502 10 * sizeof(RGBQUAD
));
503 color
= info
->bmiColors
+ 10;
504 for(r
= 0; r
<= 5; r
++) /* FIXME */
505 for(g
= 0; g
<= 5; g
++)
506 for(b
= 0; b
<= 5; b
++) {
507 color
->rgbRed
= (r
* 0xff) / 5;
508 color
->rgbGreen
= (g
* 0xff) / 5;
509 color
->rgbBlue
= (b
* 0xff) / 5;
510 color
->rgbReserved
= 0;
518 GDI_ReleaseObj( dc
->w
.hPalette
);
522 /* If the bitmap object already have a dib section that contains image data, get the bits from it*/
523 if(bmp
->dib
&& bmp
->dib
->dsBm
.bmBitsPixel
>= 15 && info
->bmiHeader
.biBitCount
>= 15)
525 /*FIXME: Only RGB dibs supported for now */
526 int srcwidth
= bmp
->dib
->dsBm
.bmWidth
, srcwidthb
= bmp
->dib
->dsBm
.bmWidthBytes
;
527 int dstwidthb
= DIB_GetDIBWidthBytes( info
->bmiHeader
.biWidth
, info
->bmiHeader
.biBitCount
);
528 LPBYTE dbits
= bits
, sbits
= (LPBYTE
) bmp
->dib
->dsBm
.bmBits
+ (startscan
* srcwidthb
);
531 if ((info
->bmiHeader
.biHeight
< 0) ^ (bmp
->dib
->dsBmih
.biHeight
< 0))
533 dbits
= (LPBYTE
)bits
+ (dstwidthb
* (lines
-1));
534 dstwidthb
= -dstwidthb
;
537 switch( info
->bmiHeader
.biBitCount
) {
540 case 16: /* 16 bpp dstDIB */
542 LPWORD dstbits
= (LPWORD
)dbits
;
543 WORD rmask
= 0x7c00, gmask
= 0x03e0, bmask
= 0x001f;
545 /* FIXME: BI_BITFIELDS not supported yet */
547 switch(bmp
->dib
->dsBm
.bmBitsPixel
) {
549 case 16: /* 16 bpp srcDIB -> 16 bpp dstDIB */
551 /* FIXME: BI_BITFIELDS not supported yet */
552 for (y
= 0; y
< lines
; y
++, dbits
+=dstwidthb
, sbits
+=srcwidthb
)
553 memcpy(dbits
, sbits
, srcwidthb
);
557 case 24: /* 24 bpp srcDIB -> 16 bpp dstDIB */
559 LPBYTE srcbits
= sbits
;
561 for( y
= 0; y
< lines
; y
++) {
562 for( x
= 0; x
< srcwidth
; x
++ )
563 *dstbits
++ = ((*srcbits
++ >> 3) & bmask
) |
564 (((WORD
)*srcbits
++ << 2) & gmask
) |
565 (((WORD
)*srcbits
++ << 7) & rmask
);
566 dstbits
= (LPWORD
)(dbits
+=dstwidthb
);
567 srcbits
= (sbits
+= srcwidthb
);
572 case 32: /* 32 bpp srcDIB -> 16 bpp dstDIB */
574 LPDWORD srcbits
= (LPDWORD
)sbits
;
577 for( y
= 0; y
< lines
; y
++) {
578 for( x
= 0; x
< srcwidth
; x
++ ) {
580 *dstbits
++ = (WORD
)(((val
>> 3) & bmask
) | ((val
>> 6) & gmask
) |
581 ((val
>> 9) & rmask
));
583 dstbits
= (LPWORD
)(dbits
+=dstwidthb
);
584 srcbits
= (LPDWORD
)(sbits
+=srcwidthb
);
589 default: /* ? bit bmp -> 16 bit DIB */
590 FIXME("15/16 bit DIB %d bit bitmap\n",
591 bmp
->bitmap
.bmBitsPixel
);
597 case 24: /* 24 bpp dstDIB */
599 LPBYTE dstbits
= dbits
;
601 switch(bmp
->dib
->dsBm
.bmBitsPixel
) {
603 case 16: /* 16 bpp srcDIB -> 24 bpp dstDIB */
605 LPWORD srcbits
= (LPWORD
)sbits
;
608 /* FIXME: BI_BITFIELDS not supported yet */
609 for( y
= 0; y
< lines
; y
++) {
610 for( x
= 0; x
< srcwidth
; x
++ ) {
612 *dstbits
++ = (BYTE
)(((val
<< 3) & 0xf8) | ((val
>> 2) & 0x07));
613 *dstbits
++ = (BYTE
)(((val
>> 2) & 0xf8) | ((val
>> 7) & 0x07));
614 *dstbits
++ = (BYTE
)(((val
>> 7) & 0xf8) | ((val
>> 12) & 0x07));
616 dstbits
= (LPBYTE
)(dbits
+=dstwidthb
);
617 srcbits
= (LPWORD
)(sbits
+=srcwidthb
);
622 case 24: /* 24 bpp srcDIB -> 24 bpp dstDIB */
624 for (y
= 0; y
< lines
; y
++, dbits
+=dstwidthb
, sbits
+=srcwidthb
)
625 memcpy(dbits
, sbits
, srcwidthb
);
629 case 32: /* 32 bpp srcDIB -> 24 bpp dstDIB */
631 LPBYTE srcbits
= (LPBYTE
)sbits
;
633 for( y
= 0; y
< lines
; y
++) {
634 for( x
= 0; x
< srcwidth
; x
++, srcbits
++ ) {
635 *dstbits
++ = *srcbits
++;
636 *dstbits
++ = *srcbits
++;
637 *dstbits
++ = *srcbits
++;
639 dstbits
=(LPBYTE
)(dbits
+=dstwidthb
);
640 srcbits
= (LPBYTE
)(sbits
+=srcwidthb
);
645 default: /* ? bit bmp -> 24 bit DIB */
646 FIXME("24 bit DIB %d bit bitmap\n",
647 bmp
->bitmap
.bmBitsPixel
);
653 case 32: /* 32 bpp dstDIB */
655 LPDWORD dstbits
= (LPDWORD
)dbits
;
657 /* FIXME: BI_BITFIELDS not supported yet */
659 switch(bmp
->dib
->dsBm
.bmBitsPixel
) {
660 case 16: /* 16 bpp srcDIB -> 32 bpp dstDIB */
662 LPWORD srcbits
= (LPWORD
)sbits
;
665 /* FIXME: BI_BITFIELDS not supported yet */
666 for( y
= 0; y
< lines
; y
++) {
667 for( x
= 0; x
< srcwidth
; x
++ ) {
668 val
= (DWORD
)*srcbits
++;
669 *dstbits
++ = ((val
<< 3) & 0xf8) | ((val
>> 2) & 0x07) |
670 ((val
<< 6) & 0xf800) | ((val
<< 1) & 0x0700) |
671 ((val
<< 9) & 0xf80000) | ((val
<< 4) & 0x070000);
673 dstbits
=(LPDWORD
)(dbits
+=dstwidthb
);
674 srcbits
=(LPWORD
)(sbits
+=srcwidthb
);
679 case 24: /* 24 bpp srcDIB -> 32 bpp dstDIB */
681 LPBYTE srcbits
= sbits
;
683 for( y
= 0; y
< lines
; y
++) {
684 for( x
= 0; x
< srcwidth
; x
++, srcbits
+=3 )
685 *dstbits
++ = ((DWORD
)*srcbits
) & 0x00ffffff;
686 dstbits
=(LPDWORD
)(dbits
+=dstwidthb
);
687 srcbits
=(sbits
+=srcwidthb
);
692 case 32: /* 32 bpp srcDIB -> 16 bpp dstDIB */
694 /* FIXME: BI_BITFIELDS not supported yet */
695 for (y
= 0; y
< lines
; y
++, dbits
+=dstwidthb
, sbits
+=srcwidthb
)
696 memcpy(dbits
, sbits
, srcwidthb
);
700 default: /* ? bit bmp -> 16 bit DIB */
701 FIXME("15/16 bit DIB %d bit bitmap\n",
702 bmp
->bitmap
.bmBitsPixel
);
708 default: /* ? bit DIB */
709 FIXME("Unsupported DIB depth %d\n", info
->bmiHeader
.biBitCount
);
713 /* Otherwise, get bits from the XImage */
714 else if(!BITMAP_Driver
->pGetDIBits(bmp
, dc
, startscan
, lines
, bits
, info
, coloruse
, hbitmap
))
716 GDI_ReleaseObj( hdc
);
717 GDI_ReleaseObj( hbitmap
);
722 else if( info
->bmiHeader
.biSize
>= sizeof(BITMAPINFOHEADER
) )
724 /* fill in struct members */
726 if( info
->bmiHeader
.biBitCount
== 0)
728 info
->bmiHeader
.biWidth
= bmp
->bitmap
.bmWidth
;
729 info
->bmiHeader
.biHeight
= bmp
->bitmap
.bmHeight
;
730 info
->bmiHeader
.biPlanes
= 1;
731 info
->bmiHeader
.biBitCount
= bmp
->bitmap
.bmBitsPixel
;
732 info
->bmiHeader
.biSizeImage
=
733 DIB_GetDIBImageBytes( bmp
->bitmap
.bmWidth
,
734 bmp
->bitmap
.bmHeight
,
735 bmp
->bitmap
.bmBitsPixel
);
736 info
->bmiHeader
.biCompression
= 0;
740 info
->bmiHeader
.biSizeImage
= DIB_GetDIBImageBytes(
741 info
->bmiHeader
.biWidth
,
742 info
->bmiHeader
.biHeight
,
743 info
->bmiHeader
.biBitCount
);
747 TRACE("biSizeImage = %ld, biWidth = %ld, biHeight = %ld\n",
748 info
->bmiHeader
.biSizeImage
, info
->bmiHeader
.biWidth
,
749 info
->bmiHeader
.biHeight
);
751 GDI_ReleaseObj( hdc
);
752 GDI_ReleaseObj( hbitmap
);
758 /***********************************************************************
759 * CreateDIBitmap16 (GDI.442)
761 HBITMAP16 WINAPI
CreateDIBitmap16( HDC16 hdc
, const BITMAPINFOHEADER
* header
,
762 DWORD init
, LPCVOID bits
, const BITMAPINFO
* data
,
765 return CreateDIBitmap( hdc
, header
, init
, bits
, data
, coloruse
);
769 /***********************************************************************
770 * CreateDIBitmap (GDI32.37)
772 HBITMAP WINAPI
CreateDIBitmap( HDC hdc
, const BITMAPINFOHEADER
*header
,
773 DWORD init
, LPCVOID bits
, const BITMAPINFO
*data
,
783 if (DIB_GetBitmapInfo( header
, &width
, &height
, &bpp
, &compr
) == -1) return 0;
784 if (height
< 0) height
= -height
;
786 /* Check if we should create a monochrome or color bitmap. */
787 /* We create a monochrome bitmap only if it has exactly 2 */
788 /* colors, which are black followed by white, nothing else. */
789 /* In all other cases, we create a color bitmap. */
791 if (bpp
!= 1) fColor
= TRUE
;
792 else if ((coloruse
!= DIB_RGB_COLORS
) ||
793 (init
!= CBM_INIT
) || !data
) fColor
= FALSE
;
796 if (data
->bmiHeader
.biSize
== sizeof(BITMAPINFOHEADER
))
798 RGBQUAD
*rgb
= data
->bmiColors
;
799 DWORD col
= RGB( rgb
->rgbRed
, rgb
->rgbGreen
, rgb
->rgbBlue
);
801 /* Check if the first color of the colormap is black */
802 if ((col
== RGB(0,0,0)))
805 col
= RGB( rgb
->rgbRed
, rgb
->rgbGreen
, rgb
->rgbBlue
);
806 /* If the second color is white, create a monochrome bitmap */
807 fColor
= (col
!= RGB(0xff,0xff,0xff));
809 /* Note : If the first color of the colormap is white
810 followed by black, we have to create a color bitmap.
811 If we don't the white will be displayed in black later on!*/
814 else if (data
->bmiHeader
.biSize
== sizeof(BITMAPCOREHEADER
))
816 RGBTRIPLE
*rgb
= ((BITMAPCOREINFO
*)data
)->bmciColors
;
817 DWORD col
= RGB( rgb
->rgbtRed
, rgb
->rgbtGreen
, rgb
->rgbtBlue
);
818 if ((col
== RGB(0,0,0)))
821 col
= RGB( rgb
->rgbtRed
, rgb
->rgbtGreen
, rgb
->rgbtBlue
);
822 fColor
= (col
!= RGB(0xff,0xff,0xff));
828 WARN("(%ld): wrong size for data\n",
829 data
->bmiHeader
.biSize
);
834 /* Now create the bitmap */
838 HDC tmpdc
= CreateDCA( "DISPLAY", NULL
, NULL
, NULL
);
839 handle
= CreateCompatibleBitmap( tmpdc
, width
, height
);
842 else handle
= CreateBitmap( width
, height
, 1, 1, NULL
);
844 if (!handle
) return 0;
846 if (init
== CBM_INIT
)
847 SetDIBits( hdc
, handle
, 0, height
, bits
, data
, coloruse
);
851 /***********************************************************************
852 * CreateDIBSection16 (GDI.489)
854 HBITMAP16 WINAPI
CreateDIBSection16 (HDC16 hdc
, BITMAPINFO
*bmi
, UINT16 usage
,
855 SEGPTR
*bits
, HANDLE section
,
858 HBITMAP16 hbitmap
= 0;
860 BOOL bDesktopDC
= FALSE
;
862 /* If the reference hdc is null, take the desktop dc */
865 hdc
= CreateCompatibleDC(0);
869 if ((dc
= DC_GetDCPtr( hdc
)))
871 hbitmap
= dc
->funcs
->pCreateDIBSection16(dc
, bmi
, usage
, bits
, section
, offset
, 0);
881 /***********************************************************************
882 * DIB_CreateDIBSection
884 HBITMAP
DIB_CreateDIBSection(HDC hdc
, BITMAPINFO
*bmi
, UINT usage
,
885 LPVOID
*bits
, HANDLE section
,
886 DWORD offset
, DWORD ovr_pitch
)
890 BOOL bDesktopDC
= FALSE
;
892 /* If the reference hdc is null, take the desktop dc */
895 hdc
= CreateCompatibleDC(0);
899 if ((dc
= DC_GetDCPtr( hdc
)))
901 hbitmap
= dc
->funcs
->pCreateDIBSection(dc
, bmi
, usage
, bits
, section
, offset
, ovr_pitch
);
911 /***********************************************************************
912 * CreateDIBSection (GDI32.36)
914 HBITMAP WINAPI
CreateDIBSection(HDC hdc
, BITMAPINFO
*bmi
, UINT usage
,
915 LPVOID
*bits
, HANDLE section
,
918 return DIB_CreateDIBSection(hdc
, bmi
, usage
, bits
, section
, offset
, 0);
921 /***********************************************************************
922 * DIB_DeleteDIBSection
924 void DIB_DeleteDIBSection( BITMAPOBJ
*bmp
)
928 DIBSECTION
*dib
= bmp
->dib
;
930 if (dib
->dsBm
.bmBits
)
933 UnmapViewOfFile(dib
->dsBm
.bmBits
);
934 else if (!dib
->dsOffset
)
935 VirtualFree(dib
->dsBm
.bmBits
, 0L, MEM_RELEASE
);
938 BITMAP_Driver
->pDeleteDIBSection(bmp
);
940 HeapFree(GetProcessHeap(), 0, dib
);
945 /***********************************************************************
946 * DIB_CreateDIBFromBitmap
947 * Allocates a packed DIB and copies the bitmap data into it.
949 HGLOBAL
DIB_CreateDIBFromBitmap(HDC hdc
, HBITMAP hBmp
)
951 BITMAPOBJ
*pBmp
= NULL
;
952 HGLOBAL hPackedDIB
= 0;
953 LPBYTE pPackedDIB
= NULL
;
954 LPBITMAPINFOHEADER pbmiHeader
= NULL
;
955 unsigned int width
, height
, depth
, cDataSize
= 0, cPackedSize
= 0,
956 OffsetBits
= 0, nLinesCopied
= 0;
958 /* Get a pointer to the BITMAPOBJ structure */
959 pBmp
= (BITMAPOBJ
*)GDI_GetObjPtr( hBmp
, BITMAP_MAGIC
);
960 if (!pBmp
) return hPackedDIB
;
962 /* Get the bitmap dimensions */
963 width
= pBmp
->bitmap
.bmWidth
;
964 height
= pBmp
->bitmap
.bmHeight
;
965 depth
= pBmp
->bitmap
.bmBitsPixel
;
968 * A packed DIB contains a BITMAPINFO structure followed immediately by
969 * an optional color palette and the pixel data.
972 /* Calculate the size of the packed DIB */
973 cDataSize
= DIB_GetDIBImageBytes( width
, height
, depth
);
974 cPackedSize
= sizeof(BITMAPINFOHEADER
)
975 + ( (depth
<= 8) ? (sizeof(RGBQUAD
) * (1 << depth
)) : 0 )
977 /* Get the offset to the bits */
978 OffsetBits
= cPackedSize
- cDataSize
;
980 /* Allocate the packed DIB */
981 TRACE("\tAllocating packed DIB of size %d\n", cPackedSize
);
982 hPackedDIB
= GlobalAlloc(GMEM_MOVEABLE
| GMEM_DDESHARE
/*| GMEM_ZEROINIT*/,
986 WARN("Could not allocate packed DIB!\n");
990 /* A packed DIB starts with a BITMAPINFOHEADER */
991 pPackedDIB
= (LPBYTE
)GlobalLock(hPackedDIB
);
992 pbmiHeader
= (LPBITMAPINFOHEADER
)pPackedDIB
;
994 /* Init the BITMAPINFOHEADER */
995 pbmiHeader
->biSize
= sizeof(BITMAPINFOHEADER
);
996 pbmiHeader
->biWidth
= width
;
997 pbmiHeader
->biHeight
= height
;
998 pbmiHeader
->biPlanes
= 1;
999 pbmiHeader
->biBitCount
= depth
;
1000 pbmiHeader
->biCompression
= BI_RGB
;
1001 pbmiHeader
->biSizeImage
= 0;
1002 pbmiHeader
->biXPelsPerMeter
= pbmiHeader
->biYPelsPerMeter
= 0;
1003 pbmiHeader
->biClrUsed
= 0;
1004 pbmiHeader
->biClrImportant
= 0;
1006 /* Retrieve the DIB bits from the bitmap and fill in the
1007 * DIB color table if present */
1009 nLinesCopied
= GetDIBits(hdc
, /* Handle to device context */
1010 hBmp
, /* Handle to bitmap */
1011 0, /* First scan line to set in dest bitmap */
1012 height
, /* Number of scan lines to copy */
1013 pPackedDIB
+ OffsetBits
, /* [out] Address of array for bitmap bits */
1014 (LPBITMAPINFO
) pbmiHeader
, /* [out] Address of BITMAPINFO structure */
1015 0); /* RGB or palette index */
1016 GlobalUnlock(hPackedDIB
);
1018 /* Cleanup if GetDIBits failed */
1019 if (nLinesCopied
!= height
)
1021 TRACE("\tGetDIBits returned %d. Actual lines=%d\n", nLinesCopied
, height
);
1022 GlobalFree(hPackedDIB
);
1027 GDI_ReleaseObj( hBmp
);