source: trunk/src/gdi32/dibitmap.cpp@ 21579

Last change on this file since 21579 was 21304, checked in by ydario, 16 years ago

Gdi32 updates.
File size: 25.1 KB
Line 
1/* $Id: dibitmap.cpp,v 1.44 2004-04-13 14:17:17 sandervl Exp $ */
2
3/*
4 * GDI32 dib & bitmap code
5 *
6 * Copyright 1998 Sander van Leeuwen (sandervl@xs4all.nl)
7 * Copyright 1998 Patrick Haller
8 * Copyright 2002-2003 Innotek Systemberatung GmbH (sandervl@innotek.de)
9 *
10 * Project Odin Software License can be found in LICENSE.TXT
11 *
12 */
13#include <os2win.h>
14#include <stdlib.h>
15#include <stdarg.h>
16#include <string.h>
17#include <misc.h>
18#include <cpuhlp.h>
19#include <winuser32.h>
20#include "dibsect.h"
21#include "rgbcvt.h"
22#include <stats.h>
23#include "oslibgpi.h"
24#include <objhandle.h>
25
26#define DBG_LOCALLOG DBG_dibitmap
27#include "dbglocal.h"
28
29ULONG CalcBitmapSize(ULONG cBits, LONG cx, LONG cy);
30
31//******************************************************************************
32//******************************************************************************
33HBITMAP WIN32API CreateDIBitmap(HDC hdc, const BITMAPINFOHEADER *lpbmih,
34 DWORD fdwInit, const void *lpbInit,
35 const BITMAPINFO *lpbmi, UINT fuUsage)
36{
37 int iHeight;
38 HBITMAP rc;
39 DWORD bitfields[3];
40 WORD *newbits = NULL;
41
42 //TEMPORARY HACK TO PREVENT CRASH IN OPEN32 (WSeB GA)
43 iHeight = lpbmih->biHeight;
44 if(lpbmih->biHeight < 0)
45 {
46 dprintf(("GDI32: CreateDIBitmap negative height! (%d,%d)", lpbmih->biWidth, lpbmih->biHeight));
47 //TODO: doesn't work if memory is readonly!!
48 ((BITMAPINFOHEADER *)lpbmih)->biHeight = -lpbmih->biHeight;
49
50 if(lpbInit && fdwInit == CBM_INIT)
51 {
52 // upside down
53 HBITMAP rc = 0;
54 long lLineByte = DIB_GetDIBWidthBytes(lpbmih->biWidth, lpbmih->biBitCount);
55 long lHeight = lpbmih->biHeight;
56
57 newbits = (WORD *)malloc( lLineByte * lHeight );
58 if(newbits) {
59 unsigned char *pbSrc = (unsigned char *)lpbInit + lLineByte * (lHeight - 1);
60 unsigned char *pbDst = (unsigned char *)newbits;
61 for(int y = 0; y < lHeight; y++) {
62 memcpy( pbDst, pbSrc, lLineByte );
63 pbDst += lLineByte;
64 pbSrc -= lLineByte;
65 }
66 rc = CreateDIBitmap(hdc, lpbmih, fdwInit, newbits, lpbmi, fuUsage);
67 free( newbits );
68 }
69
70 ((BITMAPINFOHEADER *)lpbmih)->biHeight = iHeight;
71 return rc;
72 }
73 }
74
75 // For some reason, GPI messes up the colors in DIB_PAL_COLORS mode.
76 // Work around it by converting palette indexes to RGB values
77 // (SetDIBitsToDevice works under the same circumstances though)
78 if(fuUsage == DIB_PAL_COLORS && lpbmi->bmiHeader.biSize == sizeof(BITMAPINFOHEADER) &&
79 lpbmi->bmiHeader.biBitCount <= 8)
80 {
81 // workaround for open32 bug.
82 // If syscolors > 256 and wUsage == DIB_PAL_COLORS.
83
84 int i;
85 UINT biClrUsed;
86 USHORT *pColorIndex = (USHORT *)lpbmi->bmiColors;
87 RGBQUAD *pColors;
88 BITMAPINFO *infoLoc;
89
90 biClrUsed = (lpbmi->bmiHeader.biClrUsed) ? lpbmi->bmiHeader.biClrUsed : (1<<lpbmi->bmiHeader.biBitCount);
91
92 pColors = (RGBQUAD *) alloca(biClrUsed * sizeof(RGBQUAD));
93 infoLoc = (BITMAPINFO *) alloca(sizeof(BITMAPINFO) + biClrUsed * sizeof(RGBQUAD));
94
95 memcpy(infoLoc, lpbmi, sizeof(BITMAPINFO));
96
97 if(GetDIBColorTable(hdc, 0, biClrUsed, pColors) == 0)
98 {
99 dprintf(("ERROR: StretchDIBits: GetDIBColorTable failed!!"));
100 return FALSE;
101 }
102 for(i=0;i<biClrUsed;i++, pColorIndex++)
103 {
104 infoLoc->bmiColors[i] = pColors[*pColorIndex];
105 }
106
107 rc = CreateDIBitmap(hdc, lpbmih, fdwInit, lpbInit, (PBITMAPINFO)infoLoc,
108 DIB_RGB_COLORS);
109
110 return rc;
111 }
112
113 // 2000/09/01 PH Netscape 4.7
114 // If color depth of lpbhmi is 16 bit and lpbmi is 8 bit,
115 // Open32 will crash since it won't allocate any palette color memory,
116 // however wants to copy it later on ...
117 int biBitCount = lpbmih->biBitCount;
118
119 if (lpbmih->biBitCount != lpbmi->bmiHeader.biBitCount)
120 {
121 dprintf(("GDI32: CreateDIBitmap: color depths of bitmaps differ! (%d,%d\n", lpbmih->biBitCount,
122 lpbmi->bmiHeader.biBitCount));
123
124 ((BITMAPINFOHEADER *)lpbmih)->biBitCount = lpbmi->bmiHeader.biBitCount;
125 }
126
127 switch(lpbmih->biBitCount) {
128 case 15:
129 case 16: //Default if BI_BITFIELDS not set is RGB 555
130 bitfields[0] = (lpbmih->biCompression == BI_BITFIELDS) ? *(DWORD *)lpbmi->bmiColors : DEFAULT_16BPP_RED_MASK;
131 bitfields[1] = (lpbmih->biCompression == BI_BITFIELDS) ? *((DWORD *)lpbmi->bmiColors + 1) : DEFAULT_16BPP_GREEN_MASK;
132 bitfields[2] = (lpbmih->biCompression == BI_BITFIELDS) ? *((DWORD *)lpbmi->bmiColors + 2) : DEFAULT_16BPP_BLUE_MASK;
133 break;
134 case 24:
135 case 32:
136 bitfields[0] = (lpbmih->biCompression == BI_BITFIELDS) ? *(DWORD *)lpbmi->bmiColors : DEFAULT_24BPP_RED_MASK;
137 bitfields[1] = (lpbmih->biCompression == BI_BITFIELDS) ? *((DWORD *)lpbmi->bmiColors + 1) : DEFAULT_24BPP_GREEN_MASK;
138 bitfields[2] = (lpbmih->biCompression == BI_BITFIELDS) ? *((DWORD *)lpbmi->bmiColors + 2) : DEFAULT_24BPP_BLUE_MASK;
139 break;
140 default:
141 bitfields[0] = 0;
142 bitfields[1] = 0;
143 bitfields[2] = 0;
144 break;
145 }
146 if(bitfields[1] == RGB555_GREEN_MASK && lpbInit && fdwInit == CBM_INIT)
147 {//RGB 555?
148 dprintf(("RGB 555->565 conversion required %x %x %x", bitfields[0], bitfields[1], bitfields[2]));
149
150 int imgsize = CalcBitmapSize(lpbmih->biBitCount, lpbmih->biWidth, lpbmih->biHeight);
151
152 newbits = (WORD *)malloc(imgsize);
153 pRGB555to565(newbits, (WORD *)lpbInit, imgsize/sizeof(WORD));
154
155 lpbInit = newbits;
156 }
157
158 rc = O32_CreateDIBitmap(hdc, lpbmih, fdwInit, lpbInit, lpbmi, fuUsage);
159
160 dprintf(("GDI32: CreateDIBitmap %x %x %x %x %x returned %x (%d,%d, bps %d)", hdc, lpbmih, fdwInit, lpbInit, fuUsage, rc, lpbmih->biWidth, lpbmih->biHeight, lpbmih->biBitCount));
161
162 if(newbits) free(newbits);
163
164 ((BITMAPINFOHEADER *)lpbmih)->biHeight = iHeight;
165 ((BITMAPINFOHEADER *)lpbmih)->biBitCount = biBitCount;
166
167 if(rc) {
168 STATS_CreateDIBitmap(rc, hdc, lpbmih, fdwInit, lpbInit, lpbmi, fuUsage);
169 if(bitfields[1] == RGB565_GREEN_MASK) {
170 //mark bitmap as RGB565
171 dprintf(("RGB565 bitmap"));
172 ObjSetHandleFlag(rc, OBJHANDLE_FLAG_BMP_RGB565, TRUE);
173 }
174 }
175
176 return rc;
177}
178//******************************************************************************
179//******************************************************************************
180HBITMAP WIN32API CreateCompatibleBitmap( HDC hdc, int nWidth, int nHeight)
181{
182 HBITMAP hBitmap;
183 pDCData pHps;
184
185 dprintf(("GDI32: CreateCompatibleBitmap. HDC = %08x, w:%d, h:%d",hdc, nWidth, nHeight));
186
187 pHps = (pDCData)OSLibGpiQueryDCData((HPS)hdc);
188 if(!pHps)
189 {
190 SetLastError(ERROR_INVALID_HANDLE);
191 return 0;
192 }
193
194 hBitmap = O32_CreateCompatibleBitmap(hdc, nWidth, nHeight);
195 if(hBitmap) {
196 STATS_CreateCompatibleBitmap(hBitmap,hdc, nWidth, nHeight);
197 if(pHps->hwnd == 1) { //1 == HWND_DESKTOP
198 dprintf(("Screen compatible bitmap"));
199 ObjSetHandleFlag(hBitmap, OBJHANDLE_FLAG_BMP_SCREEN_COMPATIBLE, 1);
200 }
201 }
202
203 return hBitmap;
204}
205//******************************************************************************
206//CreateDisardableBitmap is obsolete and can be replaced by CreateCompatibleBitmap
207//******************************************************************************
208HBITMAP WIN32API CreateDiscardableBitmap(HDC hDC, int nWidth, int nHeight)
209{
210 dprintf(("GDI32: CreateDisardableBitmap"));
211 return CreateCompatibleBitmap(hDC, nWidth, nHeight);
212}
213//******************************************************************************
214//******************************************************************************
215HBITMAP WIN32API CreateBitmap(int nWidth, int nHeight, UINT cPlanes,
216 UINT cBitsPerPel, const void *lpvBits)
217{
218 HBITMAP hBitmap;
219
220 hBitmap = O32_CreateBitmap(nWidth, nHeight, cPlanes, cBitsPerPel, lpvBits);
221 if(hBitmap) STATS_CreateBitmap(hBitmap,nWidth, nHeight, cPlanes, cBitsPerPel, lpvBits);
222 return(hBitmap);
223}
224//******************************************************************************
225//******************************************************************************
226HBITMAP WIN32API CreateBitmapIndirect( const BITMAP *pBitmap)
227{
228 HBITMAP hBitmap;
229
230 dprintf(("GDI32: CreateBitmapIndirect (%d,%d) bpp %d bits %x", pBitmap->bmWidth, pBitmap->bmHeight, pBitmap->bmBitsPixel, pBitmap->bmBits));
231 hBitmap = O32_CreateBitmapIndirect(pBitmap);
232 if(hBitmap) STATS_CreateBitmapIndirect(hBitmap, pBitmap);
233 return hBitmap;
234}
235//******************************************************************************
236//*********************************************************************************
237HBITMAP WIN32API CreateDIBSection( HDC hdc, BITMAPINFO *pbmi, UINT iUsage,
238 VOID **ppvBits, HANDLE hSection, DWORD dwOffset)
239{
240 HBITMAP res = 0;
241 BOOL fFlip = 0;
242 int iHeight, iWidth;
243 BOOL fCreateDC = FALSE;
244
245 dprintf(("GDI32: CreateDIBSection %x %x %x %x %x %d", hdc, pbmi, iUsage, ppvBits, hSection, dwOffset));
246
247 //SvL: 13-9-98: StarCraft uses bitmap with negative height
248 iWidth = pbmi->bmiHeader.biWidth;
249 if(pbmi->bmiHeader.biWidth < 0)
250 {
251 dprintf(("CreateDIBSection: width %d", pbmi->bmiHeader.biWidth));
252 pbmi->bmiHeader.biWidth = -pbmi->bmiHeader.biWidth;
253 fFlip = FLIP_HOR;
254 }
255 iHeight = pbmi->bmiHeader.biHeight;
256 if(pbmi->bmiHeader.biHeight < 0)
257 {
258 dprintf(("CreateDIBSection: height %d", pbmi->bmiHeader.biHeight));
259 pbmi->bmiHeader.biHeight = -pbmi->bmiHeader.biHeight;
260 fFlip |= FLIP_VERT;
261 }
262
263 //SvL: RP7 (update) calls this api with hdc == 0
264 if(hdc == 0) {
265 hdc = CreateCompatibleDC(0);
266 fCreateDC = TRUE;
267 }
268 res = O32_CreateDIBitmap(hdc, &pbmi->bmiHeader, 0, NULL, pbmi, iUsage);
269 if (res)
270 {
271 char PalSize;
272 DIBSection *dsect;
273
274 dsect = new DIBSection((BITMAPINFOHEADER_W *)&pbmi->bmiHeader, (char *)&pbmi->bmiColors, iUsage, hSection, dwOffset, (DWORD)res, fFlip);
275
276 if(dsect != NULL)
277 {
278 PalSize = dsect->GetBitCount();
279
280 if(!ppvBits && PalSize <= 8)
281 {
282 ULONG Pal[256], nrcolors;
283 LOGPALETTE tmpPal = { 0x300,1,{0,0,0,0}};
284 HPALETTE hpalCur;
285
286 // Now get the current Palette from the DC
287 hpalCur = GetCurrentObject(hdc, OBJ_PAL);
288
289 // and use it to set the DIBColorTable
290 nrcolors = GetPaletteEntries( hpalCur, 0, 1<<PalSize, (LPPALETTEENTRY)&Pal);
291 dsect->SetDIBColorTable(0, nrcolors, (LPPALETTEENTRY)&Pal);
292 }
293
294 if(ppvBits!=NULL)
295 *ppvBits = dsect->GetDIBObject();
296
297 pbmi->bmiHeader.biWidth = iWidth;
298 pbmi->bmiHeader.biHeight = iHeight;
299
300 if(fCreateDC) DeleteDC(hdc);
301
302 STATS_CreateDIBSection(res, hdc, pbmi, iUsage, ppvBits, hSection, dwOffset);
303
304 return(res);
305 }
306 }
307 if(fCreateDC) DeleteDC(hdc);
308
309 /* Error. */
310 if (res)
311 DeleteObject(res);
312 *ppvBits = NULL;
313
314#ifdef DEBUG
315 dprintf(("GDI32: CreateDIBSection, error!\n"));
316 dprintf(("pbmi->biWidth %d", pbmi->bmiHeader.biWidth));
317 dprintf(("pbmi->biHeight %d", pbmi->bmiHeader.biHeight));
318 dprintf(("pbmi->biBitCount %d", pbmi->bmiHeader.biBitCount));
319#endif
320
321 return 0;
322}
323//******************************************************************************
324//******************************************************************************
325UINT WIN32API GetDIBColorTable(HDC hdc, UINT uStartIndex, UINT cEntries,
326 RGBQUAD *pColors)
327{
328 DIBSection *dsect = DIBSection::findHDC(hdc);
329 UINT rc;
330 int i;
331
332 dprintf(("GetDIBColorTable %x %d->%d %x", hdc, uStartIndex, cEntries, pColors));
333
334 if(dsect)
335 {
336 return(dsect->GetDIBColorTable(uStartIndex, cEntries, pColors));
337 }
338 //TODO: Is this correct?????
339 // Wine returns 0 if bitmap selected into dc with bpp > 8
340 HPALETTE hpal = GetCurrentObject(hdc, OBJ_PAL);
341 rc = O32_GetPaletteEntries(hpal, uStartIndex, cEntries, (PALETTEENTRY *)pColors);
342 for(i=0;i<cEntries;i++)
343 {
344 BYTE tmp;
345 tmp = pColors[i].rgbBlue;
346 pColors[i].rgbBlue = pColors[i].rgbRed;
347 pColors[i].rgbRed = tmp;
348 pColors[i].rgbReserved = 0;
349 }
350 dprintf(("GDI32: GetDIBColorTable returns %d\n", rc));
351 return(rc);
352}
353//******************************************************************************
354//******************************************************************************
355UINT WIN32API SetDIBColorTable(HDC hdc, UINT uStartIndex, UINT cEntries,
356 RGBQUAD *pColors)
357{
358 DIBSection *dsect = DIBSection::findHDC(hdc);
359
360 dprintf(("GDI32: SetDIBColorTable %x %d,%d %x", hdc, uStartIndex, cEntries, pColors));
361 if(dsect)
362 {
363 return(dsect->SetDIBColorTable(uStartIndex, cEntries, pColors));
364 }
365 else return(0);
366}
367//******************************************************************************
368//******************************************************************************
369LONG WIN32API GetBitmapBits( HBITMAP hBitmap, LONG arg2, PVOID lpvBits)
370{
371 dprintf(("GDI32: GetBitmapBits %x", hBitmap));
372
373 if(lpvBits)
374 {
375 DIBSECTION_CHECK_IF_DIRTY_BMP(hBitmap);
376 }
377 return O32_GetBitmapBits(hBitmap, arg2, lpvBits);
378}
379//******************************************************************************
380//******************************************************************************
381LONG WIN32API SetBitmapBits( HBITMAP hBitmap, LONG arg2, const VOID * arg3)
382{
383 LONG ret;
384
385 dprintf(("GDI32: SetBitmapBits %x", hBitmap));
386 ret = O32_SetBitmapBits(hBitmap, (DWORD)arg2, arg3);
387 DIBSECTION_MARK_INVALID_BMP(hBitmap);
388 return ret;
389}
390//******************************************************************************
391//******************************************************************************
392BOOL WIN32API GetBitmapDimensionEx( HBITMAP hBitmap, PSIZE pSize)
393{
394 dprintf(("GDI32: GetBitmapDimensionEx %x (%d,%d)", hBitmap, pSize->cx, pSize->cy));
395 return O32_GetBitmapDimensionEx(hBitmap, pSize);
396}
397//******************************************************************************
398//******************************************************************************
399BOOL WIN32API SetBitmapDimensionEx( HBITMAP arg1, int arg2, int arg3, PSIZE arg4)
400{
401 dprintf(("GDI32: SetBitmapDimensionEx"));
402 return O32_SetBitmapDimensionEx(arg1, arg2, arg3, arg4);
403}
404//******************************************************************************
405//******************************************************************************
406int WIN32API GetDIBits(HDC hdc, HBITMAP hBitmap, UINT uStartScan, UINT cScanLines,
407 void *lpvBits, PBITMAPINFO lpbi, UINT uUsage)
408{
409 int nrlines;
410 pDCData pHps;
411 HDC hdcMem;
412 DWORD biCompression;
413
414 dprintf(("GDI32: GetDIBits %x %x %d %d %x %x (biBitCount %d) %d", hdc, hBitmap, uStartScan, cScanLines, lpvBits, lpbi, lpbi->bmiHeader.biBitCount, uUsage));
415
416 if(lpvBits)
417 {
418 DIBSECTION_CHECK_IF_DIRTY_BMP(hBitmap);
419 }
420
421 //SvL: WGSS screws up the DC if it's a memory DC
422 // TODO: Fix in WGSS (tries to select another bitmap in the DC which fails)
423 pHps = (pDCData)OSLibGpiQueryDCData((HPS)hdc);
424 if(!pHps)
425 {
426 SetLastError(ERROR_INVALID_HANDLE);
427 return 0;
428 }
429 if(pHps->isMemoryPS) {
430 hdcMem = CreateCompatibleDC(0);
431 }
432 else hdcMem = hdc;
433
434 if(lpvBits) {
435 biCompression = lpbi->bmiHeader.biCompression;
436 }
437
438 //If the app wants bitmap data and upside down, then flip image
439 if(lpvBits && lpbi->bmiHeader.biHeight < 0 && (lpbi->bmiHeader.biCompression == BI_RGB ||
440 lpbi->bmiHeader.biCompression == BI_BITFIELDS))
441 {
442 INT rc = -1;
443 long lLineByte;
444 LONG height = lpbi->bmiHeader.biHeight;
445
446 lpbi->bmiHeader.biHeight = -lpbi->bmiHeader.biHeight;
447
448 lLineByte = DIB_GetDIBWidthBytes(lpbi->bmiHeader.biWidth, lpbi->bmiHeader.biBitCount);
449
450 dprintf(("flip bitmap (negative height)"));
451 char *pNewBits = (char *)malloc( lLineByte * cScanLines );
452 if(pNewBits) {
453 nrlines = O32_GetDIBits(hdcMem, hBitmap, uStartScan, cScanLines, pNewBits, lpbi, uUsage);
454
455 unsigned char *pbSrc = (unsigned char *)pNewBits + lLineByte * (cScanLines - 1);
456 unsigned char *pbDst = (unsigned char *)lpvBits;
457 for(int y = 0; y < cScanLines; y++) {
458 memcpy( pbDst, pbSrc, lLineByte );
459 pbDst += lLineByte;
460 pbSrc -= lLineByte;
461 }
462 free(pNewBits);
463 }
464 else DebugInt3();
465
466 //restore height
467 lpbi->bmiHeader.biHeight = height;
468 }
469 else if (lpbi->bmiHeader.biHeight < 0)
470 {
471 LONG cySaved = lpbi->bmiHeader.biHeight;
472 lpbi->bmiHeader.biHeight = -cySaved;
473 nrlines = O32_GetDIBits(hdcMem, hBitmap, uStartScan, cScanLines, lpvBits, lpbi, uUsage);
474 lpbi->bmiHeader.biHeight = cySaved;
475 }
476 else
477 nrlines = O32_GetDIBits(hdcMem, hBitmap, uStartScan, cScanLines, lpvBits, lpbi, uUsage);
478
479 if(lpvBits) {
480 //WGSS always sets it to BI_RGB
481 lpbi->bmiHeader.biCompression = biCompression;
482 }
483
484 if(pHps->isMemoryPS)
485 DeleteDC(hdcMem);
486
487 //Only return bitfields info if the app wants it
488 if(lpvBits && lpbi->bmiHeader.biCompression == BI_BITFIELDS) {
489 // set proper color masks (only if lpvBits not NULL)
490 switch(lpbi->bmiHeader.biBitCount) {
491 case 15:
492 case 16: //RGB 565
493 {
494 DWORD dwFlags;
495
496 dwFlags = ObjQueryHandleFlags(hBitmap);
497 if(dwFlags & (OBJHANDLE_FLAG_BMP_SCREEN_COMPATIBLE|OBJHANDLE_FLAG_BMP_RGB565)) {
498 ((DWORD*)(lpbi->bmiColors))[0] = RGB565_RED_MASK;
499 ((DWORD*)(lpbi->bmiColors))[1] = RGB565_GREEN_MASK;
500 ((DWORD*)(lpbi->bmiColors))[2] = RGB565_BLUE_MASK;
501 }
502 else {
503 ((DWORD*)(lpbi->bmiColors))[0] = RGB555_RED_MASK;
504 ((DWORD*)(lpbi->bmiColors))[1] = RGB555_GREEN_MASK;
505 ((DWORD*)(lpbi->bmiColors))[2] = RGB555_BLUE_MASK;
506 }
507 break;
508 }
509 case 24:
510 case 32:
511 ((DWORD*)(lpbi->bmiColors))[0] = DEFAULT_24BPP_RED_MASK;
512 ((DWORD*)(lpbi->bmiColors))[1] = DEFAULT_24BPP_GREEN_MASK;
513 ((DWORD*)(lpbi->bmiColors))[2] = DEFAULT_24BPP_BLUE_MASK;
514 break;
515 }
516 dprintf(("BI_BITFIELDS: %x %x %x", ((DWORD*)(lpbi->bmiColors))[0], ((DWORD*)(lpbi->bmiColors))[1], ((DWORD*)(lpbi->bmiColors))[2]));
517 }
518 if(nrlines && lpvBits && lpbi->bmiHeader.biBitCount == 16 && ((DWORD*)(lpbi->bmiColors))[1] == RGB555_GREEN_MASK)
519 {//RGB 555?
520 dprintf(("RGB 565->555 conversion required"));
521
522 int imgsize = CalcBitmapSize(lpbi->bmiHeader.biBitCount,
523 lpbi->bmiHeader.biWidth, nrlines);
524
525 pRGB565to555((WORD *)lpvBits, (WORD *)lpvBits, imgsize/sizeof(WORD));
526 }
527
528 //WGSS/Open32 returns 1 when querying the bitmap info; must return nr of scanlines
529 //(0 signals failure)
530 #if 0//XP returns 1 just like Open32 does for the query bitmap info header mode.
531 if (lpvBits == NULL)
532 {
533 if (nrlines != 0)
534 nrlines = cScanLines;
535 else
536 dprintf(("GetDIBits failed!!"));
537 }
538 #else
539 if (!nrlines)
540 dprintf(("GetDIBits failed!!"));
541 #endif
542 return nrlines;
543}
544//******************************************************************************
545//******************************************************************************
546void WIN32API ConvertRGB555to565(LPVOID dest, LPVOID src, UINT imgsize)
547{
548 pRGB555to565((WORD *)dest, (WORD *)src, imgsize/sizeof(WORD));
549}
550//******************************************************************************
551//******************************************************************************
552int WIN32API SetDIBits(HDC hdc, HBITMAP hBitmap, UINT startscan, UINT numlines, const VOID *pBits,
553 const BITMAPINFO *pBitmapInfo, UINT usage)
554{
555 int ret;
556 DWORD bitfields[3];
557 WORD *newbits = NULL;
558
559 dprintf(("GDI32: SetDIBits %x %x %x %x %x %x %x", hdc, hBitmap, startscan, numlines, pBits, pBitmapInfo, usage));
560
561 //SvL: Open32's SetDIBits really messes things up for 1 bpp bitmaps, must use SetBitmapBits
562 if(pBitmapInfo->bmiHeader.biBitCount == 1 && startscan == 0 && numlines == pBitmapInfo->bmiHeader.biHeight)
563 {//WARNING: hack alert!
564 int dibwidth = DIB_GetDIBWidthBytes(pBitmapInfo->bmiHeader.biWidth, 1);
565 int bmpwidth = BITMAP_GetWidthBytes(pBitmapInfo->bmiHeader.biWidth, 1);
566 char *newpix = (char *)malloc(dibwidth*pBitmapInfo->bmiHeader.biHeight);
567 char *orgpix = (char *)pBits;
568 int ret;
569
570 dprintf(("Flipping 1bpp bitmap and calling SetBitmapBits (WORKAROUND) (%d -> %d)", dibwidth, bmpwidth));
571 newpix += ((pBitmapInfo->bmiHeader.biHeight-1)*bmpwidth);
572
573 //flip bitmap here; SetDIBits assumes origin is left bottom, SetBitmapBits left top
574 //SetDIBits assumes DWORD aligned data
575 //SetBitmapBits assumes WORD aligned data
576 for(int i=0;i<pBitmapInfo->bmiHeader.biHeight;i++) {
577 memcpy(newpix, orgpix, bmpwidth);
578
579 newpix -= bmpwidth;
580 orgpix += dibwidth;
581 }
582 newpix += bmpwidth;
583 ret = O32_SetBitmapBits(hBitmap, pBitmapInfo->bmiHeader.biSizeImage, newpix);
584
585 DIBSECTION_MARK_INVALID_BMP(hBitmap);
586
587 free(newpix);
588 return ret;
589 }
590#ifdef DEBUG
591 if(pBitmapInfo->bmiHeader.biBitCount == 1) {
592 dprintf(("ERROR: SetDIBits does NOT work well for 1 bpp bitmaps!!!!!"));
593 }
594#endif
595
596 switch(pBitmapInfo->bmiHeader.biBitCount) {
597 case 15:
598 case 16: //Default if BI_BITFIELDS not set is RGB 555
599 bitfields[0] = (pBitmapInfo->bmiHeader.biCompression == BI_BITFIELDS) ? *(DWORD *)pBitmapInfo->bmiColors : DEFAULT_16BPP_RED_MASK;
600 bitfields[1] = (pBitmapInfo->bmiHeader.biCompression == BI_BITFIELDS) ? *((DWORD *)pBitmapInfo->bmiColors + 1) : DEFAULT_16BPP_GREEN_MASK;
601 bitfields[2] = (pBitmapInfo->bmiHeader.biCompression == BI_BITFIELDS) ? *((DWORD *)pBitmapInfo->bmiColors + 2) : DEFAULT_16BPP_BLUE_MASK;
602 break;
603
604 case 24:
605 case 32:
606 bitfields[0] = (pBitmapInfo->bmiHeader.biCompression == BI_BITFIELDS) ? *(DWORD *)pBitmapInfo->bmiColors : DEFAULT_24BPP_RED_MASK;
607 bitfields[1] = (pBitmapInfo->bmiHeader.biCompression == BI_BITFIELDS) ? *((DWORD *)pBitmapInfo->bmiColors + 1) : DEFAULT_24BPP_GREEN_MASK;
608 bitfields[2] = (pBitmapInfo->bmiHeader.biCompression == BI_BITFIELDS) ? *((DWORD *)pBitmapInfo->bmiColors + 2) : DEFAULT_24BPP_BLUE_MASK;
609 break;
610 default:
611 bitfields[0] = 0;
612 bitfields[1] = 0;
613 bitfields[2] = 0;
614 break;
615 }
616 if(pBits && bitfields[1] == RGB555_GREEN_MASK)
617 {//RGB 555?
618 dprintf(("RGB 555->565 conversion required %x %x %x", bitfields[0], bitfields[1], bitfields[2]));
619
620 int imgsize = CalcBitmapSize(pBitmapInfo->bmiHeader.biBitCount,
621 pBitmapInfo->bmiHeader.biWidth, numlines);
622
623 newbits = (WORD *)malloc(imgsize);
624 pRGB555to565(newbits, (WORD *)pBits, imgsize/sizeof(WORD));
625 pBits = newbits;
626 }
627
628 //If upside down, reverse scanlines and call SetDIBits again
629 if(pBitmapInfo->bmiHeader.biHeight < 0 && (pBitmapInfo->bmiHeader.biCompression == BI_RGB ||
630 pBitmapInfo->bmiHeader.biCompression == BI_BITFIELDS))
631 {
632 // upside down
633 INT rc = -1;
634 long lLineByte;
635
636 //TODO: doesn't work if memory is readonly!!
637 ((BITMAPINFO *)pBitmapInfo)->bmiHeader.biHeight = -pBitmapInfo->bmiHeader.biHeight;
638
639 lLineByte = DIB_GetDIBWidthBytes(pBitmapInfo->bmiHeader.biWidth, pBitmapInfo->bmiHeader.biBitCount);
640
641 dprintf(("Reverse bitmap (negative height)"));
642 char *pNewBits = (char *)malloc( lLineByte * numlines );
643 if(pNewBits) {
644 unsigned char *pbSrc = (unsigned char *)pBits + lLineByte * (numlines - 1);
645 unsigned char *pbDst = (unsigned char *)pNewBits;
646 for(int y = 0; y < numlines; y++) {
647 memcpy( pbDst, pbSrc, lLineByte );
648 pbDst += lLineByte;
649 pbSrc -= lLineByte;
650 }
651 ret = O32_SetDIBits(hdc, hBitmap, startscan, numlines, pNewBits, pBitmapInfo, usage);
652 free(pNewBits);
653 }
654 else DebugInt3();
655
656 //TODO: doesn't work if memory is readonly!!
657 ((BITMAPINFO *)pBitmapInfo)->bmiHeader.biHeight = -pBitmapInfo->bmiHeader.biHeight;
658 }
659 else {
660 ret = O32_SetDIBits(hdc, hBitmap, startscan, numlines, pBits, pBitmapInfo, usage);
661 }
662 if(newbits) free(newbits);
663
664 DIBSECTION_MARK_INVALID_BMP(hBitmap);
665
666 return ret;
667}
668//******************************************************************************
669//******************************************************************************
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