LibreOffice Module vcl (master)  1
dibtools.cxx
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19 
20 #include <sal/config.h>
21 #include <sal/log.hxx>
22 
23 #include <cassert>
24 
25 #include <o3tl/safeint.hxx>
26 #include <vcl/dibtools.hxx>
27 #include <comphelper/fileformat.h>
28 #include <tools/zcodec.hxx>
29 #include <tools/stream.hxx>
30 #include <tools/fract.hxx>
31 #include <tools/helpers.hxx>
33 #include <unotools/configmgr.hxx>
34 #include <vcl/bitmapex.hxx>
35 #include <vcl/outdev.hxx>
37 #include <memory>
38 
39 #define DIBCOREHEADERSIZE ( 12UL )
40 #define DIBINFOHEADERSIZE ( sizeof(DIBInfoHeader) )
41 #define DIBV5HEADERSIZE ( sizeof(DIBV5Header) )
42 
43 // - DIBInfoHeader and DIBV5Header
44 
45 typedef sal_Int32 FXPT2DOT30;
46 
47 namespace
48 {
49 
50 struct CIEXYZ
51 {
52  FXPT2DOT30 aXyzX;
53  FXPT2DOT30 aXyzY;
54  FXPT2DOT30 aXyzZ;
55 
56  CIEXYZ()
57  : aXyzX(0),
58  aXyzY(0),
59  aXyzZ(0)
60  {}
61 };
62 
63 struct CIEXYZTriple
64 {
65  CIEXYZ aXyzRed;
66  CIEXYZ aXyzGreen;
67  CIEXYZ aXyzBlue;
68 
69  CIEXYZTriple()
70  : aXyzRed(),
71  aXyzGreen(),
72  aXyzBlue()
73  {}
74 };
75 
76 struct DIBInfoHeader
77 {
78  sal_uInt32 nSize;
79  sal_Int32 nWidth;
80  sal_Int32 nHeight;
81  sal_uInt16 nPlanes;
82  sal_uInt16 nBitCount;
83  sal_uInt32 nCompression;
84  sal_uInt32 nSizeImage;
85  sal_Int32 nXPelsPerMeter;
86  sal_Int32 nYPelsPerMeter;
87  sal_uInt32 nColsUsed;
88  sal_uInt32 nColsImportant;
89 
90  DIBInfoHeader()
91  : nSize(0),
92  nWidth(0),
93  nHeight(0),
94  nPlanes(0),
95  nBitCount(0),
96  nCompression(0),
97  nSizeImage(0),
98  nXPelsPerMeter(0),
99  nYPelsPerMeter(0),
100  nColsUsed(0),
101  nColsImportant(0)
102  {}
103 };
104 
105 struct DIBV5Header : public DIBInfoHeader
106 {
107  sal_uInt32 nV5RedMask;
108  sal_uInt32 nV5GreenMask;
109  sal_uInt32 nV5BlueMask;
110  sal_uInt32 nV5AlphaMask;
111  sal_uInt32 nV5CSType;
112  CIEXYZTriple aV5Endpoints;
113  sal_uInt32 nV5GammaRed;
114  sal_uInt32 nV5GammaGreen;
115  sal_uInt32 nV5GammaBlue;
116  sal_uInt32 nV5Intent;
117  sal_uInt32 nV5ProfileData;
118  sal_uInt32 nV5ProfileSize;
119  sal_uInt32 nV5Reserved;
120 
121  DIBV5Header()
122  : DIBInfoHeader(),
123  nV5RedMask(0),
124  nV5GreenMask(0),
125  nV5BlueMask(0),
126  nV5AlphaMask(0),
127  nV5CSType(0),
128  aV5Endpoints(),
129  nV5GammaRed(0),
130  nV5GammaGreen(0),
131  nV5GammaBlue(0),
132  nV5Intent(0),
133  nV5ProfileData(0),
134  nV5ProfileSize(0),
135  nV5Reserved(0)
136  {}
137 };
138 
139 vcl::PixelFormat convertToBPP(sal_uInt16 nCount)
140 {
141  return (nCount <= 1) ? vcl::PixelFormat::N1_BPP :
142  (nCount <= 8) ? vcl::PixelFormat::N8_BPP :
144 }
145 
146 bool isBitfieldCompression( ScanlineFormat nScanlineFormat )
147 {
148  return ScanlineFormat::N32BitTcMask == nScanlineFormat;
149 }
150 
151 bool ImplReadDIBInfoHeader(SvStream& rIStm, DIBV5Header& rHeader, bool& bTopDown, bool bMSOFormat)
152 {
153  if (rIStm.remainingSize() <= 4)
154  return false;
155  // BITMAPINFOHEADER or BITMAPCOREHEADER or BITMAPV5HEADER
156  sal_uInt64 const aStartPos(rIStm.Tell());
157  rIStm.ReadUInt32( rHeader.nSize );
158 
159  // BITMAPCOREHEADER
160  if ( rHeader.nSize == DIBCOREHEADERSIZE )
161  {
162  sal_Int16 nTmp16;
163 
164  rIStm.ReadInt16( nTmp16 ); rHeader.nWidth = nTmp16;
165  rIStm.ReadInt16( nTmp16 ); rHeader.nHeight = nTmp16;
166  rIStm.ReadUInt16( rHeader.nPlanes );
167  rIStm.ReadUInt16( rHeader.nBitCount );
168  }
169  else if ( bMSOFormat && rHeader.nSize == DIBINFOHEADERSIZE )
170  {
171  sal_Int16 nTmp16(0);
172  rIStm.ReadInt16(nTmp16);
173  rHeader.nWidth = nTmp16;
174  rIStm.ReadInt16(nTmp16);
175  rHeader.nHeight = nTmp16;
176  sal_uInt8 nTmp8(0);
177  rIStm.ReadUChar(nTmp8);
178  rHeader.nPlanes = nTmp8;
179  rIStm.ReadUChar(nTmp8);
180  rHeader.nBitCount = nTmp8;
181  rIStm.ReadInt16(nTmp16);
182  rHeader.nSizeImage = nTmp16;
183  rIStm.ReadInt16(nTmp16);
184  rHeader.nCompression = nTmp16;
185  if ( !rHeader.nSizeImage ) // uncompressed?
186  rHeader.nSizeImage = ((rHeader.nWidth * rHeader.nBitCount + 31) & ~31) / 8 * rHeader.nHeight;
187  rIStm.ReadInt32( rHeader.nXPelsPerMeter );
188  rIStm.ReadInt32( rHeader.nYPelsPerMeter );
189  rIStm.ReadUInt32( rHeader.nColsUsed );
190  rIStm.ReadUInt32( rHeader.nColsImportant );
191  }
192  else
193  {
194  // BITMAPCOREHEADER, BITMAPV5HEADER or unknown. Read as far as possible
195  std::size_t nUsed(sizeof(rHeader.nSize));
196 
197  auto readUInt16 = [&nUsed, &rHeader, &rIStm](sal_uInt16 & v) {
198  if (nUsed < rHeader.nSize) {
199  rIStm.ReadUInt16(v);
200  nUsed += sizeof(v);
201  }
202  };
203  auto readInt32 = [&nUsed, &rHeader, &rIStm](sal_Int32 & v) {
204  if (nUsed < rHeader.nSize) {
205  rIStm.ReadInt32(v);
206  nUsed += sizeof(v);
207  }
208  };
209  auto readUInt32 = [&nUsed, &rHeader, &rIStm](sal_uInt32 & v) {
210  if (nUsed < rHeader.nSize) {
211  rIStm.ReadUInt32(v);
212  nUsed += sizeof(v);
213  }
214  };
215 
216  // read DIBInfoHeader entries
217  readInt32( rHeader.nWidth );
218  readInt32( rHeader.nHeight );
219  readUInt16( rHeader.nPlanes );
220  readUInt16( rHeader.nBitCount );
221  readUInt32( rHeader.nCompression );
222  readUInt32( rHeader.nSizeImage );
223  readInt32( rHeader.nXPelsPerMeter );
224  readInt32( rHeader.nYPelsPerMeter );
225  readUInt32( rHeader.nColsUsed );
226  readUInt32( rHeader.nColsImportant );
227 
228  // read DIBV5HEADER members
229  readUInt32( rHeader.nV5RedMask );
230  readUInt32( rHeader.nV5GreenMask );
231  readUInt32( rHeader.nV5BlueMask );
232  readUInt32( rHeader.nV5AlphaMask );
233  readUInt32( rHeader.nV5CSType );
234 
235  // read contained CIEXYZTriple's
236  readInt32( rHeader.aV5Endpoints.aXyzRed.aXyzX );
237  readInt32( rHeader.aV5Endpoints.aXyzRed.aXyzY );
238  readInt32( rHeader.aV5Endpoints.aXyzRed.aXyzZ );
239  readInt32( rHeader.aV5Endpoints.aXyzGreen.aXyzX );
240  readInt32( rHeader.aV5Endpoints.aXyzGreen.aXyzY );
241  readInt32( rHeader.aV5Endpoints.aXyzGreen.aXyzZ );
242  readInt32( rHeader.aV5Endpoints.aXyzBlue.aXyzX );
243  readInt32( rHeader.aV5Endpoints.aXyzBlue.aXyzY );
244  readInt32( rHeader.aV5Endpoints.aXyzBlue.aXyzZ );
245 
246  readUInt32( rHeader.nV5GammaRed );
247  readUInt32( rHeader.nV5GammaGreen );
248  readUInt32( rHeader.nV5GammaBlue );
249  readUInt32( rHeader.nV5Intent );
250  readUInt32( rHeader.nV5ProfileData );
251  readUInt32( rHeader.nV5ProfileSize );
252  readUInt32( rHeader.nV5Reserved );
253 
254  // seek to EndPos
255  if (!checkSeek(rIStm, aStartPos + rHeader.nSize))
256  return false;
257  }
258 
259  if (rHeader.nHeight == SAL_MIN_INT32)
260  return false;
261 
262  if ( rHeader.nHeight < 0 )
263  {
264  bTopDown = true;
265  rHeader.nHeight *= -1;
266  }
267  else
268  {
269  bTopDown = false;
270  }
271 
272  if ( rHeader.nWidth < 0 || rHeader.nXPelsPerMeter < 0 || rHeader.nYPelsPerMeter < 0 )
273  {
275  }
276 
277  // #144105# protect a little against damaged files
278  assert(rHeader.nHeight >= 0);
279  if (rHeader.nHeight != 0 && rHeader.nWidth >= 0
280  && (rHeader.nSizeImage / 16 / static_cast<sal_uInt32>(rHeader.nHeight)
281  > o3tl::make_unsigned(rHeader.nWidth)))
282  {
283  rHeader.nSizeImage = 0;
284  }
285 
286 
287  if (rHeader.nPlanes != 1)
288  return false;
289 
290  if (rHeader.nBitCount != 0 && rHeader.nBitCount != 1 &&
291  rHeader.nBitCount != 4 && rHeader.nBitCount != 8 &&
292  rHeader.nBitCount != 16 && rHeader.nBitCount != 24 &&
293  rHeader.nBitCount != 32)
294  {
295  return false;
296  }
297 
298  return rIStm.good();
299 }
300 
301 bool ImplReadDIBPalette(SvStream& rIStm, BitmapPalette& rPal, bool bQuad)
302 {
303  const sal_uInt16 nColors = rPal.GetEntryCount();
304  const sal_uLong nPalSize = nColors * ( bQuad ? 4UL : 3UL );
305  BitmapColor aPalColor;
306 
307  std::unique_ptr<sal_uInt8[]> pEntries(new sal_uInt8[ nPalSize ]);
308  if (rIStm.ReadBytes(pEntries.get(), nPalSize) != nPalSize)
309  {
310  return false;
311  }
312 
313  sal_uInt8* pTmpEntry = pEntries.get();
314  for( sal_uInt16 i = 0; i < nColors; i++ )
315  {
316  aPalColor.SetBlue( *pTmpEntry++ );
317  aPalColor.SetGreen( *pTmpEntry++ );
318  aPalColor.SetRed( *pTmpEntry++ );
319 
320  if( bQuad )
321  pTmpEntry++;
322 
323  rPal[i] = aPalColor;
324  }
325 
326  return rIStm.GetError() == ERRCODE_NONE;
327 }
328 
329 BitmapColor SanitizePaletteIndex(sal_uInt8 nIndex, BitmapPalette& rPalette, bool bForceToMonoWhileReading)
330 {
331  const sal_uInt16 nPaletteEntryCount = rPalette.GetEntryCount();
332  if (nPaletteEntryCount && nIndex >= nPaletteEntryCount)
333  {
334  auto nSanitizedIndex = nIndex % nPaletteEntryCount;
335  SAL_WARN_IF(nIndex != nSanitizedIndex, "vcl", "invalid colormap index: "
336  << static_cast<unsigned int>(nIndex) << ", colormap len is: "
337  << nPaletteEntryCount);
338  nIndex = nSanitizedIndex;
339  }
340 
341  if (nPaletteEntryCount && bForceToMonoWhileReading)
342  {
343  return BitmapColor(static_cast<sal_uInt8>(rPalette[nIndex].GetLuminance() >= 255));
344  }
345 
346  return BitmapColor(nIndex);
347 }
348 
349 BitmapColor SanitizeColor(const BitmapColor &rColor, bool bForceToMonoWhileReading)
350 {
351  if (!bForceToMonoWhileReading)
352  return rColor;
353  return BitmapColor(static_cast<sal_uInt8>(rColor.GetLuminance() >= 255));
354 }
355 
356 bool ImplDecodeRLE(sal_uInt8* pBuffer, DIBV5Header const & rHeader, BitmapWriteAccess& rAcc, BitmapPalette& rPalette, bool bForceToMonoWhileReading, bool bRLE4)
357 {
358  Scanline pRLE = pBuffer;
359  Scanline pEndRLE = pBuffer + rHeader.nSizeImage;
360  tools::Long nY = rHeader.nHeight - 1;
361  const sal_uLong nWidth = rAcc.Width();
362  sal_uLong nCountByte;
363  sal_uLong nRunByte;
364  sal_uLong nX = 0;
365  sal_uInt8 cTmp;
366  bool bEndDecoding = false;
367 
368  do
369  {
370  if (pRLE == pEndRLE)
371  return false;
372  if( ( nCountByte = *pRLE++ ) == 0 )
373  {
374  if (pRLE == pEndRLE)
375  return false;
376  nRunByte = *pRLE++;
377 
378  if( nRunByte > 2 )
379  {
380  Scanline pScanline = rAcc.GetScanline(nY);
381  if( bRLE4 )
382  {
383  nCountByte = nRunByte >> 1;
384 
385  for( sal_uLong i = 0; i < nCountByte; i++ )
386  {
387  if (pRLE == pEndRLE)
388  return false;
389 
390  cTmp = *pRLE++;
391 
392  if( nX < nWidth )
393  rAcc.SetPixelOnData(pScanline, nX++, SanitizePaletteIndex(cTmp >> 4, rPalette, bForceToMonoWhileReading));
394 
395  if( nX < nWidth )
396  rAcc.SetPixelOnData(pScanline, nX++, SanitizePaletteIndex(cTmp & 0x0f, rPalette, bForceToMonoWhileReading));
397  }
398 
399  if( nRunByte & 1 )
400  {
401  if (pRLE == pEndRLE)
402  return false;
403 
404  if( nX < nWidth )
405  rAcc.SetPixelOnData(pScanline, nX++, SanitizePaletteIndex(*pRLE >> 4, rPalette, bForceToMonoWhileReading));
406 
407  pRLE++;
408  }
409 
410  if( ( ( nRunByte + 1 ) >> 1 ) & 1 )
411  {
412  if (pRLE == pEndRLE)
413  return false;
414 
415  pRLE++;
416  }
417  }
418  else
419  {
420  for( sal_uLong i = 0; i < nRunByte; i++ )
421  {
422  if (pRLE == pEndRLE)
423  return false;
424 
425  if( nX < nWidth )
426  rAcc.SetPixelOnData(pScanline, nX++, SanitizePaletteIndex(*pRLE, rPalette, bForceToMonoWhileReading));
427 
428  pRLE++;
429  }
430 
431  if( nRunByte & 1 )
432  {
433  if (pRLE == pEndRLE)
434  return false;
435 
436  pRLE++;
437  }
438  }
439  }
440  else if( !nRunByte )
441  {
442  nY--;
443  nX = 0;
444  }
445  else if( nRunByte == 1 )
446  bEndDecoding = true;
447  else
448  {
449  if (pRLE == pEndRLE)
450  return false;
451 
452  nX += *pRLE++;
453 
454  if (pRLE == pEndRLE)
455  return false;
456 
457  nY -= *pRLE++;
458  }
459  }
460  else
461  {
462  if (pRLE == pEndRLE)
463  return false;
464  cTmp = *pRLE++;
465 
466  Scanline pScanline = rAcc.GetScanline(nY);
467  if( bRLE4 )
468  {
469  nRunByte = nCountByte >> 1;
470 
471  for (sal_uLong i = 0; i < nRunByte && nX < nWidth; ++i)
472  {
473  rAcc.SetPixelOnData(pScanline, nX++, SanitizePaletteIndex(cTmp >> 4, rPalette, bForceToMonoWhileReading));
474  if( nX < nWidth )
475  rAcc.SetPixelOnData(pScanline, nX++, SanitizePaletteIndex(cTmp & 0x0f, rPalette, bForceToMonoWhileReading));
476  }
477 
478  if( ( nCountByte & 1 ) && ( nX < nWidth ) )
479  rAcc.SetPixelOnData(pScanline, nX++, SanitizePaletteIndex(cTmp >> 4, rPalette, bForceToMonoWhileReading));
480  }
481  else
482  {
483  for (sal_uLong i = 0; i < nCountByte && nX < nWidth; ++i)
484  rAcc.SetPixelOnData(pScanline, nX++, SanitizePaletteIndex(cTmp, rPalette, bForceToMonoWhileReading));
485  }
486  }
487  }
488  while (!bEndDecoding && (nY >= 0));
489 
490  return true;
491 }
492 
493 bool ImplReadDIBBits(SvStream& rIStm, DIBV5Header& rHeader, BitmapWriteAccess& rAcc, BitmapPalette& rPalette, BitmapWriteAccess* pAccAlpha,
494  bool bTopDown, bool& rAlphaUsed, const sal_uInt64 nAlignedWidth,
495  const bool bForceToMonoWhileReading)
496 {
497  sal_uInt32 nRMask(( rHeader.nBitCount == 16 ) ? 0x00007c00UL : 0x00ff0000UL);
498  sal_uInt32 nGMask(( rHeader.nBitCount == 16 ) ? 0x000003e0UL : 0x0000ff00UL);
499  sal_uInt32 nBMask(( rHeader.nBitCount == 16 ) ? 0x0000001fUL : 0x000000ffUL);
500  bool bNative(false);
501  bool bTCMask(!pAccAlpha && ((16 == rHeader.nBitCount) || (32 == rHeader.nBitCount)));
502  bool bRLE((RLE_8 == rHeader.nCompression && 8 == rHeader.nBitCount) || (RLE_4 == rHeader.nCompression && 4 == rHeader.nBitCount));
503 
504  // Is native format?
505  switch(rAcc.GetScanlineFormat())
506  {
509  {
510  // we can't trust arbitrary-sourced index based formats to have correct indexes, so we exclude the pal formats
511  // from raw read and force checking their colormap indexes
512  bNative = ( ( rAcc.IsBottomUp() != bTopDown ) && !bRLE && !bTCMask && ( rAcc.GetScanlineSize() == nAlignedWidth ) );
513  break;
514  }
515 
516  default:
517  {
518  break;
519  }
520  }
521 
522  // Read data
523  if (bNative)
524  {
525  if (nAlignedWidth
526  > std::numeric_limits<std::size_t>::max() / rHeader.nHeight)
527  {
528  return false;
529  }
530  std::size_t n = nAlignedWidth * rHeader.nHeight;
531  if (rIStm.ReadBytes(rAcc.GetBuffer(), n) != n)
532  {
533  return false;
534  }
535  }
536  else
537  {
538  // Read color mask
539  if(bTCMask && BITFIELDS == rHeader.nCompression)
540  {
541  rIStm.SeekRel( -12 );
542  rIStm.ReadUInt32( nRMask );
543  rIStm.ReadUInt32( nGMask );
544  rIStm.ReadUInt32( nBMask );
545  }
546 
547  const tools::Long nWidth(rHeader.nWidth);
548  const tools::Long nHeight(rHeader.nHeight);
549  tools::Long nResult = 0;
550  if (utl::ConfigManager::IsFuzzing() && (o3tl::checked_multiply(nWidth, nHeight, nResult) || nResult > 4000000))
551  return false;
552 
553  if (bRLE)
554  {
555  if(!rHeader.nSizeImage)
556  {
557  rHeader.nSizeImage = rIStm.remainingSize();
558  }
559 
560  if (rHeader.nSizeImage > rIStm.remainingSize())
561  return false;
562  std::vector<sal_uInt8> aBuffer(rHeader.nSizeImage);
563  if (rIStm.ReadBytes(aBuffer.data(), rHeader.nSizeImage) != rHeader.nSizeImage)
564  return false;
565  if (!ImplDecodeRLE(aBuffer.data(), rHeader, rAcc, rPalette, bForceToMonoWhileReading, RLE_4 == rHeader.nCompression))
566  return false;
567  }
568  else
569  {
570  if (nAlignedWidth > rIStm.remainingSize())
571  {
572  // ofz#11188 avoid timeout
573  // all following paths will enter a case statement, and nCount
574  // is always at least 1, so we can check here before allocation
575  // if at least one row can be read
576  return false;
577  }
578  std::vector<sal_uInt8> aBuf(nAlignedWidth);
579 
580  const tools::Long nI(bTopDown ? 1 : -1);
581  tools::Long nY(bTopDown ? 0 : nHeight - 1);
582  tools::Long nCount(nHeight);
583 
584  switch(rHeader.nBitCount)
585  {
586  case 1:
587  {
588  for( ; nCount--; nY += nI )
589  {
590  sal_uInt8 * pTmp = aBuf.data();
591  if (rIStm.ReadBytes(pTmp, nAlignedWidth)
592  != nAlignedWidth)
593  {
594  return false;
595  }
596  sal_uInt8 cTmp = *pTmp++;
597  Scanline pScanline = rAcc.GetScanline(nY);
598  for( tools::Long nX = 0, nShift = 8; nX < nWidth; nX++ )
599  {
600  if( !nShift )
601  {
602  nShift = 8;
603  cTmp = *pTmp++;
604  }
605 
606  auto nIndex = (cTmp >> --nShift) & 1;
607  rAcc.SetPixelOnData(pScanline, nX, SanitizePaletteIndex(nIndex, rPalette, bForceToMonoWhileReading));
608  }
609  }
610  }
611  break;
612 
613  case 4:
614  {
615  for( ; nCount--; nY += nI )
616  {
617  sal_uInt8 * pTmp = aBuf.data();
618  if (rIStm.ReadBytes(pTmp, nAlignedWidth)
619  != nAlignedWidth)
620  {
621  return false;
622  }
623  sal_uInt8 cTmp = *pTmp++;
624  Scanline pScanline = rAcc.GetScanline(nY);
625  for( tools::Long nX = 0, nShift = 2; nX < nWidth; nX++ )
626  {
627  if( !nShift )
628  {
629  nShift = 2;
630  cTmp = *pTmp++;
631  }
632 
633  auto nIndex = (cTmp >> ( --nShift << 2 ) ) & 0x0f;
634  rAcc.SetPixelOnData(pScanline, nX, SanitizePaletteIndex(nIndex, rPalette, bForceToMonoWhileReading));
635  }
636  }
637  }
638  break;
639 
640  case 8:
641  {
642  for( ; nCount--; nY += nI )
643  {
644  sal_uInt8 * pTmp = aBuf.data();
645  if (rIStm.ReadBytes(pTmp, nAlignedWidth)
646  != nAlignedWidth)
647  {
648  return false;
649  }
650 
651  Scanline pScanline = rAcc.GetScanline(nY);
652  for( tools::Long nX = 0; nX < nWidth; nX++ )
653  {
654  auto nIndex = *pTmp++;
655  rAcc.SetPixelOnData(pScanline, nX, SanitizePaletteIndex(nIndex, rPalette, bForceToMonoWhileReading));
656  }
657  }
658  }
659  break;
660 
661  case 16:
662  {
663  ColorMaskElement aRedMask(nRMask);
664  if (!aRedMask.CalcMaskShift())
665  return false;
666  ColorMaskElement aGreenMask(nGMask);
667  if (!aGreenMask.CalcMaskShift())
668  return false;
669  ColorMaskElement aBlueMask(nBMask);
670  if (!aBlueMask.CalcMaskShift())
671  return false;
672 
673  ColorMask aMask(aRedMask, aGreenMask, aBlueMask);
674  BitmapColor aColor;
675 
676  for( ; nCount--; nY += nI )
677  {
678  sal_uInt16 * pTmp16 = reinterpret_cast<sal_uInt16*>(aBuf.data());
679  if (rIStm.ReadBytes(pTmp16, nAlignedWidth)
680  != nAlignedWidth)
681  {
682  return false;
683  }
684 
685  Scanline pScanline = rAcc.GetScanline(nY);
686  for( tools::Long nX = 0; nX < nWidth; nX++ )
687  {
688  aMask.GetColorFor16BitLSB( aColor, reinterpret_cast<sal_uInt8*>(pTmp16++) );
689  rAcc.SetPixelOnData(pScanline, nX, SanitizeColor(aColor, bForceToMonoWhileReading));
690  }
691  }
692  }
693  break;
694 
695  case 24:
696  {
697  BitmapColor aPixelColor;
698 
699  for( ; nCount--; nY += nI )
700  {
701  sal_uInt8* pTmp = aBuf.data();
702  if (rIStm.ReadBytes(pTmp, nAlignedWidth)
703  != nAlignedWidth)
704  {
705  return false;
706  }
707 
708  Scanline pScanline = rAcc.GetScanline(nY);
709  for( tools::Long nX = 0; nX < nWidth; nX++ )
710  {
711  aPixelColor.SetBlue( *pTmp++ );
712  aPixelColor.SetGreen( *pTmp++ );
713  aPixelColor.SetRed( *pTmp++ );
714  rAcc.SetPixelOnData(pScanline, nX, SanitizeColor(aPixelColor, bForceToMonoWhileReading));
715  }
716  }
717  }
718  break;
719 
720  case 32:
721  {
722  ColorMaskElement aRedMask(nRMask);
723  if (!aRedMask.CalcMaskShift())
724  return false;
725  ColorMaskElement aGreenMask(nGMask);
726  if (!aGreenMask.CalcMaskShift())
727  return false;
728  ColorMaskElement aBlueMask(nBMask);
729  if (!aBlueMask.CalcMaskShift())
730  return false;
731  ColorMask aMask(aRedMask, aGreenMask, aBlueMask);
732 
733  BitmapColor aColor;
734  sal_uInt32* pTmp32;
735 
736  if(pAccAlpha)
737  {
738  sal_uInt8 aAlpha;
739 
740  for( ; nCount--; nY += nI )
741  {
742  pTmp32 = reinterpret_cast<sal_uInt32*>(aBuf.data());
743  if (rIStm.ReadBytes(pTmp32, nAlignedWidth)
744  != nAlignedWidth)
745  {
746  return false;
747  }
748 
749  Scanline pScanline = rAcc.GetScanline(nY);
750  Scanline pAlphaScanline = pAccAlpha->GetScanline(nY);
751  for( tools::Long nX = 0; nX < nWidth; nX++ )
752  {
753  aMask.GetColorAndAlphaFor32Bit( aColor, aAlpha, reinterpret_cast<sal_uInt8*>(pTmp32++) );
754  rAcc.SetPixelOnData(pScanline, nX, SanitizeColor(aColor, bForceToMonoWhileReading));
755  pAccAlpha->SetPixelOnData(pAlphaScanline, nX, BitmapColor(sal_uInt8(0xff) - aAlpha));
756  rAlphaUsed |= 0xff != aAlpha;
757  }
758  }
759  }
760  else
761  {
762  for( ; nCount--; nY += nI )
763  {
764  pTmp32 = reinterpret_cast<sal_uInt32*>(aBuf.data());
765  if (rIStm.ReadBytes(pTmp32, nAlignedWidth)
766  != nAlignedWidth)
767  {
768  return false;
769  }
770 
771  Scanline pScanline = rAcc.GetScanline(nY);
772  for( tools::Long nX = 0; nX < nWidth; nX++ )
773  {
774  aMask.GetColorFor32Bit( aColor, reinterpret_cast<sal_uInt8*>(pTmp32++) );
775  rAcc.SetPixelOnData(pScanline, nX, SanitizeColor(aColor, bForceToMonoWhileReading));
776  }
777  }
778  }
779  }
780  }
781  }
782  }
783 
784  return rIStm.GetError() == ERRCODE_NONE;
785 }
786 
787 bool ImplReadDIBBody(SvStream& rIStm, Bitmap& rBmp, AlphaMask* pBmpAlpha, sal_uLong nOffset, bool bIsMask, bool bMSOFormat)
788 {
789  DIBV5Header aHeader;
790  const sal_uLong nStmPos = rIStm.Tell();
791  bool bTopDown(false);
792 
793  if (!ImplReadDIBInfoHeader(rIStm, aHeader, bTopDown, bMSOFormat))
794  return false;
795 
796  //BI_BITCOUNT_0 jpeg/png is unsupported
797  if (aHeader.nBitCount == 0)
798  return false;
799 
800  if (aHeader.nWidth <= 0 || aHeader.nHeight <= 0)
801  return false;
802 
803  // In case ImplReadDIB() didn't call ImplReadDIBFileHeader() before
804  // this method, nOffset is 0, that's OK.
805  if (nOffset && aHeader.nSize > nOffset)
806  {
807  // Header size claims to extend into the image data.
808  // Looks like an error.
809  return false;
810  }
811 
812  sal_uInt16 nColors(0);
813  SvStream* pIStm;
814  std::unique_ptr<SvMemoryStream> pMemStm;
815  std::vector<sal_uInt8> aData;
816 
817  if (aHeader.nBitCount <= 8)
818  {
819  if(aHeader.nColsUsed)
820  {
821  nColors = static_cast<sal_uInt16>(aHeader.nColsUsed);
822  }
823  else
824  {
825  nColors = ( 1 << aHeader.nBitCount );
826  }
827  }
828 
829  if (ZCOMPRESS == aHeader.nCompression)
830  {
831  sal_uInt32 nCodedSize(0);
832  sal_uInt32 nUncodedSize(0);
833 
834  // read coding information
835  rIStm.ReadUInt32( nCodedSize ).ReadUInt32( nUncodedSize ).ReadUInt32( aHeader.nCompression );
836  if (nCodedSize > rIStm.remainingSize())
837  nCodedSize = sal_uInt32(rIStm.remainingSize());
838 
839  pMemStm.reset(new SvMemoryStream);
840  // There may be bytes left over or the codec might read more than
841  // necessary. So to preserve the correctness of the source stream copy
842  // the encoded block
843  pMemStm->WriteStream(rIStm, nCodedSize);
844  pMemStm->Seek(0);
845 
846  size_t nSizeInc(4 * pMemStm->remainingSize());
847  if (nUncodedSize < nSizeInc)
848  nSizeInc = nUncodedSize;
849 
850  if (nSizeInc > 0)
851  {
852  // decode buffer
853  ZCodec aCodec;
854  aCodec.BeginCompression();
855  aData.resize(nSizeInc);
856  size_t nDataPos(0);
857  while (nUncodedSize > nDataPos)
858  {
859  assert(aData.size() > nDataPos);
860  const size_t nToRead(std::min<size_t>(nUncodedSize - nDataPos, aData.size() - nDataPos));
861  assert(nToRead > 0);
862  assert(!aData.empty());
863  const tools::Long nRead = aCodec.Read(*pMemStm, aData.data() + nDataPos, sal_uInt32(nToRead));
864  if (nRead > 0)
865  {
866  nDataPos += static_cast<tools::ULong>(nRead);
867  // we haven't read everything yet: resize buffer and continue
868  if (nDataPos < nUncodedSize)
869  aData.resize(aData.size() + nSizeInc);
870  }
871  else
872  {
873  break;
874  }
875  }
876  // truncate the data buffer to actually read size
877  aData.resize(nDataPos);
878  // set the real uncoded size
879  nUncodedSize = sal_uInt32(aData.size());
880  aCodec.EndCompression();
881  }
882 
883  if (aData.empty())
884  {
885  // add something so we can take address of the first element
886  aData.resize(1);
887  nUncodedSize = 0;
888  }
889 
890  // set decoded bytes to memory stream,
891  // from which we will read the bitmap data
892  pMemStm.reset(new SvMemoryStream);
893  pIStm = pMemStm.get();
894  assert(!aData.empty());
895  pMemStm->SetBuffer(aData.data(), nUncodedSize, nUncodedSize);
896  nOffset = 0;
897  }
898  else
899  {
900  pIStm = &rIStm;
901  }
902 
903  // read palette
904  BitmapPalette aPalette;
905  if (nColors)
906  {
907  aPalette.SetEntryCount(nColors);
908  ImplReadDIBPalette(*pIStm, aPalette, aHeader.nSize != DIBCOREHEADERSIZE);
909  }
910 
911  if (pIStm->GetError())
912  return false;
913 
914  if (nOffset)
915  {
916  pIStm->SeekRel(nOffset - (pIStm->Tell() - nStmPos));
917  }
918 
919  const sal_Int64 nBitsPerLine (static_cast<sal_Int64>(aHeader.nWidth) * static_cast<sal_Int64>(aHeader.nBitCount));
920  if (nBitsPerLine > SAL_MAX_UINT32)
921  return false;
922  const sal_uInt64 nAlignedWidth(AlignedWidth4Bytes(static_cast<sal_uLong>(nBitsPerLine)));
923 
924  switch (aHeader.nCompression)
925  {
926  case RLE_8:
927  {
928  if (aHeader.nBitCount != 8)
929  return false;
930  // (partially) check the image dimensions to avoid potential large bitmap allocation if the input is damaged
931  sal_uInt64 nMaxWidth = pIStm->remainingSize();
932  nMaxWidth *= 256; //assume generous compression ratio
933  nMaxWidth /= aHeader.nHeight;
934  if (nMaxWidth < o3tl::make_unsigned(aHeader.nWidth))
935  return false;
936  break;
937  }
938  case RLE_4:
939  {
940  if (aHeader.nBitCount != 4)
941  return false;
942  sal_uInt64 nMaxWidth = pIStm->remainingSize();
943  nMaxWidth *= 512; //assume generous compression ratio
944  nMaxWidth /= aHeader.nHeight;
945  if (nMaxWidth < o3tl::make_unsigned(aHeader.nWidth))
946  return false;
947  break;
948  }
949  default:
950  // tdf#122958 invalid compression value used
951  if (aHeader.nCompression & 0x000F)
952  {
953  // lets assume that there was an error in the generating application
954  // and allow through as COMPRESS_NONE if the bottom byte is 0
955  SAL_WARN( "vcl", "bad bmp compression scheme: " << aHeader.nCompression << ", rejecting bmp");
956  return false;
957  }
958  else
959  SAL_WARN( "vcl", "bad bmp compression scheme: " << aHeader.nCompression << ", assuming meant to be COMPRESS_NONE");
960  [[fallthrough]];
961  case BITFIELDS:
962  case ZCOMPRESS:
963  case COMPRESS_NONE:
964  {
965  // (partially) check the image dimensions to avoid potential large bitmap allocation if the input is damaged
966  sal_uInt64 nMaxWidth = pIStm->remainingSize();
967  nMaxWidth /= aHeader.nHeight;
968  if (nMaxWidth < nAlignedWidth)
969  return false;
970  break;
971  }
972  }
973 
974  const Size aSizePixel(aHeader.nWidth, aHeader.nHeight);
975  AlphaMask aNewBmpAlpha;
976  AlphaScopedWriteAccess pAccAlpha;
977  bool bAlphaPossible(pBmpAlpha && aHeader.nBitCount == 32);
978 
979  if (bAlphaPossible)
980  {
981  const bool bRedSet(0 != aHeader.nV5RedMask);
982  const bool bGreenSet(0 != aHeader.nV5GreenMask);
983  const bool bBlueSet(0 != aHeader.nV5BlueMask);
984 
985  // some clipboard entries have alpha mask on zero to say that there is
986  // no alpha; do only use this when the other masks are set. The MS docu
987  // says that masks are only to be set when bV5Compression is set to
988  // BI_BITFIELDS, but there seem to exist a wild variety of usages...
989  if((bRedSet || bGreenSet || bBlueSet) && (0 == aHeader.nV5AlphaMask))
990  {
991  bAlphaPossible = false;
992  }
993  }
994 
995  if (bAlphaPossible)
996  {
997  aNewBmpAlpha = AlphaMask(aSizePixel);
998  pAccAlpha = AlphaScopedWriteAccess(aNewBmpAlpha);
999  }
1000 
1001  vcl::PixelFormat ePixelFormat(convertToBPP(aHeader.nBitCount));
1002  const BitmapPalette* pPal = &aPalette;
1003  //ofz#948 match the surrounding logic of case TransparentType::Bitmap of
1004  //ReadDIBBitmapEx but do it while reading for performance
1005  const bool bIsAlpha = (ePixelFormat == vcl::PixelFormat::N8_BPP &&
1006  !!aPalette && aPalette.IsGreyPalette8Bit());
1007  const bool bForceToMonoWhileReading = (bIsMask && !bIsAlpha && ePixelFormat != vcl::PixelFormat::N1_BPP);
1008  if (bForceToMonoWhileReading)
1009  {
1010  pPal = nullptr;
1011  ePixelFormat = vcl::PixelFormat::N1_BPP;
1012  SAL_WARN( "vcl", "forcing mask to monochrome");
1013  }
1014 
1015  Bitmap aNewBmp(aSizePixel, ePixelFormat, pPal);
1016  BitmapScopedWriteAccess pAcc(aNewBmp);
1017  if (!pAcc)
1018  return false;
1019  if (pAcc->Width() != aHeader.nWidth || pAcc->Height() != aHeader.nHeight)
1020  {
1021  return false;
1022  }
1023 
1024  // read bits
1025  bool bAlphaUsed(false);
1026  bool bRet = ImplReadDIBBits(*pIStm, aHeader, *pAcc, aPalette, pAccAlpha.get(), bTopDown, bAlphaUsed, nAlignedWidth, bForceToMonoWhileReading);
1027 
1028  if (bRet && aHeader.nXPelsPerMeter && aHeader.nYPelsPerMeter)
1029  {
1030  MapMode aMapMode(
1031  MapUnit::MapMM,
1032  Point(),
1033  Fraction(1000, aHeader.nXPelsPerMeter),
1034  Fraction(1000, aHeader.nYPelsPerMeter));
1035 
1036  aNewBmp.SetPrefMapMode(aMapMode);
1037  aNewBmp.SetPrefSize(Size(aHeader.nWidth, aHeader.nHeight));
1038  }
1039 
1040  pAcc.reset();
1041 
1042  if (bAlphaPossible)
1043  {
1044  pAccAlpha.reset();
1045 
1046  if(!bAlphaUsed)
1047  {
1048  bAlphaPossible = false;
1049  }
1050  }
1051 
1052  if (bRet)
1053  {
1054  rBmp = aNewBmp;
1055 
1056  if(bAlphaPossible)
1057  {
1058  *pBmpAlpha = aNewBmpAlpha;
1059  }
1060  }
1061 
1062  return bRet;
1063 }
1064 
1065 bool ImplReadDIBFileHeader( SvStream& rIStm, sal_uLong& rOffset )
1066 {
1067  bool bRet = false;
1068 
1069  const sal_uInt64 nStreamLength = rIStm.TellEnd();
1070 
1071  sal_uInt16 nTmp16 = 0;
1072  rIStm.ReadUInt16( nTmp16 );
1073 
1074  if ( ( 0x4D42 == nTmp16 ) || ( 0x4142 == nTmp16 ) )
1075  {
1076  sal_uInt32 nTmp32(0);
1077  if ( 0x4142 == nTmp16 )
1078  {
1079  rIStm.SeekRel( 12 );
1080  rIStm.ReadUInt16( nTmp16 );
1081  rIStm.SeekRel( 8 );
1082  rIStm.ReadUInt32( nTmp32 );
1083  rOffset = nTmp32 - 28;
1084  bRet = ( 0x4D42 == nTmp16 );
1085  }
1086  else // 0x4D42 == nTmp16, 'MB' from BITMAPFILEHEADER
1087  {
1088  rIStm.SeekRel( 8 ); // we are on bfSize member of BITMAPFILEHEADER, forward to bfOffBits
1089  rIStm.ReadUInt32( nTmp32 ); // read bfOffBits
1090  rOffset = nTmp32 - 14; // adapt offset by sizeof(BITMAPFILEHEADER)
1091  bRet = rIStm.GetError() == ERRCODE_NONE;
1092  }
1093 
1094  if ( rOffset >= nStreamLength )
1095  {
1096  // Offset claims that image starts past the end of the
1097  // stream. Unlikely.
1099  bRet = false;
1100  }
1101  }
1102  else
1104 
1105  return bRet;
1106 }
1107 
1108 bool ImplWriteDIBPalette( SvStream& rOStm, BitmapReadAccess const & rAcc )
1109 {
1110  const sal_uInt16 nColors = rAcc.GetPaletteEntryCount();
1111  const sal_uLong nPalSize = nColors * 4UL;
1112  std::unique_ptr<sal_uInt8[]> pEntries(new sal_uInt8[ nPalSize ]);
1113  sal_uInt8* pTmpEntry = pEntries.get();
1114 
1115  for( sal_uInt16 i = 0; i < nColors; i++ )
1116  {
1117  const BitmapColor& rPalColor = rAcc.GetPaletteColor( i );
1118 
1119  *pTmpEntry++ = rPalColor.GetBlue();
1120  *pTmpEntry++ = rPalColor.GetGreen();
1121  *pTmpEntry++ = rPalColor.GetRed();
1122  *pTmpEntry++ = 0;
1123  }
1124 
1125  rOStm.WriteBytes( pEntries.get(), nPalSize );
1126 
1127  return rOStm.GetError() == ERRCODE_NONE;
1128 }
1129 
1130 bool ImplWriteRLE( SvStream& rOStm, BitmapReadAccess const & rAcc, bool bRLE4 )
1131 {
1132  const sal_uLong nWidth = rAcc.Width();
1133  const sal_uLong nHeight = rAcc.Height();
1134  sal_uLong nX;
1135  sal_uLong nSaveIndex;
1136  sal_uLong nCount;
1137  sal_uLong nBufCount;
1138  std::vector<sal_uInt8> aBuf(( nWidth << 1 ) + 2);
1139  sal_uInt8 cPix;
1140  sal_uInt8 cLast;
1141  bool bFound;
1142 
1143  for ( tools::Long nY = nHeight - 1; nY >= 0; nY-- )
1144  {
1145  sal_uInt8* pTmp = aBuf.data();
1146  nX = nBufCount = 0;
1147  Scanline pScanline = rAcc.GetScanline( nY );
1148 
1149  while( nX < nWidth )
1150  {
1151  nCount = 1;
1152  cPix = rAcc.GetIndexFromData( pScanline, nX++ );
1153 
1154  while( ( nX < nWidth ) && ( nCount < 255 )
1155  && ( cPix == rAcc.GetIndexFromData( pScanline, nX ) ) )
1156  {
1157  nX++;
1158  nCount++;
1159  }
1160 
1161  if ( nCount > 1 )
1162  {
1163  *pTmp++ = static_cast<sal_uInt8>(nCount);
1164  *pTmp++ = ( bRLE4 ? ( ( cPix << 4 ) | cPix ) : cPix );
1165  nBufCount += 2;
1166  }
1167  else
1168  {
1169  cLast = cPix;
1170  nSaveIndex = nX - 1;
1171  bFound = false;
1172 
1173  while( ( nX < nWidth ) && ( nCount < 256 ) )
1174  {
1175  cPix = rAcc.GetIndexFromData( pScanline, nX );
1176  if (cPix == cLast)
1177  break;
1178  nX++; nCount++;
1179  cLast = cPix;
1180  bFound = true;
1181  }
1182 
1183  if ( bFound )
1184  nX--;
1185 
1186  if ( nCount > 3 )
1187  {
1188  *pTmp++ = 0;
1189  *pTmp++ = static_cast<sal_uInt8>(--nCount);
1190 
1191  if( bRLE4 )
1192  {
1193  for ( sal_uLong i = 0; i < nCount; i++, pTmp++ )
1194  {
1195  *pTmp = rAcc.GetIndexFromData( pScanline, nSaveIndex++ ) << 4;
1196 
1197  if ( ++i < nCount )
1198  *pTmp |= rAcc.GetIndexFromData( pScanline, nSaveIndex++ );
1199  }
1200 
1201  nCount = ( nCount + 1 ) >> 1;
1202  }
1203  else
1204  {
1205  for( sal_uLong i = 0; i < nCount; i++ )
1206  *pTmp++ = rAcc.GetIndexFromData( pScanline, nSaveIndex++ );
1207  }
1208 
1209  if ( nCount & 1 )
1210  {
1211  *pTmp++ = 0;
1212  nBufCount += ( nCount + 3 );
1213  }
1214  else
1215  nBufCount += ( nCount + 2 );
1216  }
1217  else
1218  {
1219  *pTmp++ = 1;
1220  *pTmp++ = rAcc.GetIndexFromData( pScanline, nSaveIndex ) << (bRLE4 ? 4 : 0);
1221 
1222  if ( nCount == 3 )
1223  {
1224  *pTmp++ = 1;
1225  *pTmp++ = rAcc.GetIndexFromData( pScanline, ++nSaveIndex ) << ( bRLE4 ? 4 : 0 );
1226  nBufCount += 4;
1227  }
1228  else
1229  nBufCount += 2;
1230  }
1231  }
1232  }
1233 
1234  aBuf[ nBufCount++ ] = 0;
1235  aBuf[ nBufCount++ ] = 0;
1236 
1237  rOStm.WriteBytes(aBuf.data(), nBufCount);
1238  }
1239 
1240  rOStm.WriteUChar( 0 );
1241  rOStm.WriteUChar( 1 );
1242 
1243  return rOStm.GetError() == ERRCODE_NONE;
1244 }
1245 
1246 bool ImplWriteDIBBits(SvStream& rOStm, BitmapReadAccess const & rAcc, BitmapReadAccess const * pAccAlpha, sal_uLong nCompression, sal_uInt32& rImageSize)
1247 {
1248  if(!pAccAlpha && BITFIELDS == nCompression)
1249  {
1250  const ColorMask& rMask = rAcc.GetColorMask();
1251  SVBT32 aVal32;
1252 
1253  UInt32ToSVBT32( rMask.GetRedMask(), aVal32 );
1254  rOStm.WriteBytes( aVal32, 4UL );
1255 
1256  UInt32ToSVBT32( rMask.GetGreenMask(), aVal32 );
1257  rOStm.WriteBytes( aVal32, 4UL );
1258 
1259  UInt32ToSVBT32( rMask.GetBlueMask(), aVal32 );
1260  rOStm.WriteBytes( aVal32, 4UL );
1261 
1262  rImageSize = rOStm.Tell();
1263 
1264  if( rAcc.IsBottomUp() )
1265  rOStm.WriteBytes(rAcc.GetBuffer(), rAcc.Height() * rAcc.GetScanlineSize());
1266  else
1267  {
1268  for( tools::Long nY = rAcc.Height() - 1, nScanlineSize = rAcc.GetScanlineSize(); nY >= 0; nY-- )
1269  rOStm.WriteBytes( rAcc.GetScanline(nY), nScanlineSize );
1270  }
1271  }
1272  else if(!pAccAlpha && ((RLE_4 == nCompression) || (RLE_8 == nCompression)))
1273  {
1274  rImageSize = rOStm.Tell();
1275  ImplWriteRLE( rOStm, rAcc, RLE_4 == nCompression );
1276  }
1277  else if(!nCompression)
1278  {
1279  // #i5xxx# Limit bitcount to 24bit, the 32 bit cases are not
1280  // handled properly below (would have to set color masks, and
1281  // nCompression=BITFIELDS - but color mask is not set for
1282  // formats != *_TC_*). Note that this very problem might cause
1283  // trouble at other places - the introduction of 32 bit RGBA
1284  // bitmaps is relatively recent.
1285  // #i59239# discretize bitcount for aligned width to 1,8,24
1286  // (other cases are not written below)
1287  const auto ePixelFormat(pAccAlpha ? vcl::PixelFormat::N32_BPP : convertToBPP(rAcc.GetBitCount()));
1288  const sal_uLong nAlignedWidth(AlignedWidth4Bytes(rAcc.Width() * sal_Int32(ePixelFormat)));
1289  bool bNative(false);
1290 
1291  switch(rAcc.GetScanlineFormat())
1292  {
1296  {
1297  if(!pAccAlpha && rAcc.IsBottomUp() && (rAcc.GetScanlineSize() == nAlignedWidth))
1298  {
1299  bNative = true;
1300  }
1301 
1302  break;
1303  }
1304 
1305  default:
1306  {
1307  break;
1308  }
1309  }
1310 
1311  rImageSize = rOStm.Tell();
1312 
1313  if(bNative)
1314  {
1315  rOStm.WriteBytes(rAcc.GetBuffer(), nAlignedWidth * rAcc.Height());
1316  }
1317  else
1318  {
1319  const tools::Long nWidth(rAcc.Width());
1320  const tools::Long nHeight(rAcc.Height());
1321  std::vector<sal_uInt8> aBuf(nAlignedWidth);
1322  switch(ePixelFormat)
1323  {
1325  {
1326  //valgrind, zero out the trailing unused alignment bytes
1327  size_t nUnusedBytes = nAlignedWidth - ((nWidth+7) / 8);
1328  memset(aBuf.data() + nAlignedWidth - nUnusedBytes, 0, nUnusedBytes);
1329 
1330  for( tools::Long nY = nHeight - 1; nY >= 0; nY-- )
1331  {
1332  sal_uInt8* pTmp = aBuf.data();
1333  sal_uInt8 cTmp = 0;
1334  Scanline pScanline = rAcc.GetScanline( nY );
1335 
1336  for( tools::Long nX = 0, nShift = 8; nX < nWidth; nX++ )
1337  {
1338  if( !nShift )
1339  {
1340  nShift = 8;
1341  *pTmp++ = cTmp;
1342  cTmp = 0;
1343  }
1344 
1345  cTmp |= rAcc.GetIndexFromData( pScanline, nX ) << --nShift;
1346  }
1347 
1348  *pTmp = cTmp;
1349  rOStm.WriteBytes(aBuf.data(), nAlignedWidth);
1350  }
1351  }
1352  break;
1353 
1355  {
1356  for( tools::Long nY = nHeight - 1; nY >= 0; nY-- )
1357  {
1358  sal_uInt8* pTmp = aBuf.data();
1359  Scanline pScanline = rAcc.GetScanline( nY );
1360 
1361  for( tools::Long nX = 0; nX < nWidth; nX++ )
1362  *pTmp++ = rAcc.GetIndexFromData( pScanline, nX );
1363 
1364  rOStm.WriteBytes(aBuf.data(), nAlignedWidth);
1365  }
1366  }
1367  break;
1368 
1370  {
1371  //valgrind, zero out the trailing unused alignment bytes
1372  size_t nUnusedBytes = nAlignedWidth - nWidth * 3;
1373  memset(aBuf.data() + nAlignedWidth - nUnusedBytes, 0, nUnusedBytes);
1374  }
1375  [[fallthrough]];
1376  // #i59239# fallback to 24 bit format, if bitcount is non-default
1377  default:
1378  {
1379  BitmapColor aPixelColor;
1380  const bool bWriteAlpha(ePixelFormat == vcl::PixelFormat::N32_BPP && pAccAlpha);
1381 
1382  for( tools::Long nY = nHeight - 1; nY >= 0; nY-- )
1383  {
1384  sal_uInt8* pTmp = aBuf.data();
1385  Scanline pScanlineAlpha = bWriteAlpha ? pAccAlpha->GetScanline( nY ) : nullptr;
1386 
1387  for( tools::Long nX = 0; nX < nWidth; nX++ )
1388  {
1389  // when alpha is used, this may be non-24bit main bitmap, so use GetColor
1390  // instead of GetPixel to ensure RGB value
1391  aPixelColor = rAcc.GetColor( nY, nX );
1392 
1393  *pTmp++ = aPixelColor.GetBlue();
1394  *pTmp++ = aPixelColor.GetGreen();
1395  *pTmp++ = aPixelColor.GetRed();
1396 
1397  if(bWriteAlpha)
1398  {
1399  *pTmp++ = sal_uInt8(0xff) - pAccAlpha->GetIndexFromData( pScanlineAlpha, nX );
1400  }
1401  }
1402 
1403  rOStm.WriteBytes(aBuf.data(), nAlignedWidth);
1404  }
1405  }
1406  break;
1407  }
1408  }
1409  }
1410 
1411  rImageSize = rOStm.Tell() - rImageSize;
1412 
1413  return (!rOStm.GetError());
1414 }
1415 
1416 bool ImplWriteDIBBody(const Bitmap& rBitmap, SvStream& rOStm, BitmapReadAccess const & rAcc, BitmapReadAccess const * pAccAlpha, bool bCompressed)
1417 {
1418  const MapMode aMapPixel(MapUnit::MapPixel);
1419  DIBV5Header aHeader;
1420  sal_uLong nImageSizePos(0);
1421  sal_uLong nEndPos(0);
1422  sal_uInt32 nCompression(COMPRESS_NONE);
1423  bool bRet(false);
1424 
1425  aHeader.nSize = pAccAlpha ? DIBV5HEADERSIZE : DIBINFOHEADERSIZE; // size dependent on CF_DIB type to use
1426  aHeader.nWidth = rAcc.Width();
1427  aHeader.nHeight = rAcc.Height();
1428  aHeader.nPlanes = 1;
1429 
1430  if(!pAccAlpha && isBitfieldCompression(rAcc.GetScanlineFormat()))
1431  {
1432  aHeader.nBitCount = 32;
1433  aHeader.nSizeImage = rAcc.Height() * rAcc.GetScanlineSize();
1434  nCompression = BITFIELDS;
1435  }
1436  else
1437  {
1438  // #i5xxx# Limit bitcount to 24bit, the 32 bit cases are
1439  // not handled properly below (would have to set color
1440  // masks, and nCompression=BITFIELDS - but color mask is
1441  // not set for formats != *_TC_*). Note that this very
1442  // problem might cause trouble at other places - the
1443  // introduction of 32 bit RGBA bitmaps is relatively
1444  // recent.
1445  // #i59239# discretize bitcount to 1,8,24 (other cases
1446  // are not written below)
1447  const auto ePixelFormat(pAccAlpha ? vcl::PixelFormat::N32_BPP : convertToBPP(rAcc.GetBitCount()));
1448  aHeader.nBitCount = sal_uInt16(ePixelFormat);
1449  aHeader.nSizeImage = rAcc.Height() * AlignedWidth4Bytes(rAcc.Width() * aHeader.nBitCount);
1450 
1451  if (bCompressed)
1452  {
1453  if (ePixelFormat == vcl::PixelFormat::N8_BPP)
1454  nCompression = RLE_8;
1455  }
1456  }
1457 
1458  if((rOStm.GetCompressMode() & SvStreamCompressFlags::ZBITMAP) && (rOStm.GetVersion() >= SOFFICE_FILEFORMAT_40))
1459  {
1460  aHeader.nCompression = ZCOMPRESS;
1461  }
1462  else
1463  {
1464  aHeader.nCompression = nCompression;
1465  }
1466 
1467  if(rBitmap.GetPrefSize().Width() && rBitmap.GetPrefSize().Height() && (rBitmap.GetPrefMapMode() != aMapPixel))
1468  {
1469  // #i48108# Try to recover xpels/ypels as previously stored on
1470  // disk. The problem with just converting maPrefSize to 100th
1471  // mm and then relating that to the bitmap pixel size is that
1472  // MapMode is integer-based, and suffers from roundoffs,
1473  // especially if maPrefSize is small. Trying to circumvent
1474  // that by performing part of the math in floating point.
1475  const Size aScale100000(OutputDevice::LogicToLogic(Size(100000, 100000), MapMode(MapUnit::Map100thMM), rBitmap.GetPrefMapMode()));
1476  const double fBmpWidthM(static_cast<double>(rBitmap.GetPrefSize().Width()) / aScale100000.Width());
1477  const double fBmpHeightM(static_cast<double>(rBitmap.GetPrefSize().Height()) / aScale100000.Height());
1478 
1479  if(!basegfx::fTools::equalZero(fBmpWidthM) && !basegfx::fTools::equalZero(fBmpHeightM))
1480  {
1481  aHeader.nXPelsPerMeter = basegfx::fround(rAcc.Width() / fabs(fBmpWidthM));
1482  aHeader.nYPelsPerMeter = basegfx::fround(rAcc.Height() / fabs(fBmpHeightM));
1483  }
1484  }
1485 
1486  aHeader.nColsUsed = ((!pAccAlpha && aHeader.nBitCount <= 8) ? rAcc.GetPaletteEntryCount() : 0);
1487  aHeader.nColsImportant = 0;
1488 
1489  rOStm.WriteUInt32( aHeader.nSize );
1490  rOStm.WriteInt32( aHeader.nWidth );
1491  rOStm.WriteInt32( aHeader.nHeight );
1492  rOStm.WriteUInt16( aHeader.nPlanes );
1493  rOStm.WriteUInt16( aHeader.nBitCount );
1494  rOStm.WriteUInt32( aHeader.nCompression );
1495 
1496  nImageSizePos = rOStm.Tell();
1497  rOStm.SeekRel( sizeof( aHeader.nSizeImage ) );
1498 
1499  rOStm.WriteInt32( aHeader.nXPelsPerMeter );
1500  rOStm.WriteInt32( aHeader.nYPelsPerMeter );
1501  rOStm.WriteUInt32( aHeader.nColsUsed );
1502  rOStm.WriteUInt32( aHeader.nColsImportant );
1503 
1504  if(pAccAlpha) // only write DIBV5 when asked to do so
1505  {
1506  aHeader.nV5CSType = 0x57696E20; // LCS_WINDOWS_COLOR_SPACE
1507  aHeader.nV5Intent = 0x00000004; // LCS_GM_IMAGES
1508 
1509  rOStm.WriteUInt32( aHeader.nV5RedMask );
1510  rOStm.WriteUInt32( aHeader.nV5GreenMask );
1511  rOStm.WriteUInt32( aHeader.nV5BlueMask );
1512  rOStm.WriteUInt32( aHeader.nV5AlphaMask );
1513  rOStm.WriteUInt32( aHeader.nV5CSType );
1514 
1515  rOStm.WriteInt32( aHeader.aV5Endpoints.aXyzRed.aXyzX );
1516  rOStm.WriteInt32( aHeader.aV5Endpoints.aXyzRed.aXyzY );
1517  rOStm.WriteInt32( aHeader.aV5Endpoints.aXyzRed.aXyzZ );
1518  rOStm.WriteInt32( aHeader.aV5Endpoints.aXyzGreen.aXyzX );
1519  rOStm.WriteInt32( aHeader.aV5Endpoints.aXyzGreen.aXyzY );
1520  rOStm.WriteInt32( aHeader.aV5Endpoints.aXyzGreen.aXyzZ );
1521  rOStm.WriteInt32( aHeader.aV5Endpoints.aXyzBlue.aXyzX );
1522  rOStm.WriteInt32( aHeader.aV5Endpoints.aXyzBlue.aXyzY );
1523  rOStm.WriteInt32( aHeader.aV5Endpoints.aXyzBlue.aXyzZ );
1524 
1525  rOStm.WriteUInt32( aHeader.nV5GammaRed );
1526  rOStm.WriteUInt32( aHeader.nV5GammaGreen );
1527  rOStm.WriteUInt32( aHeader.nV5GammaBlue );
1528  rOStm.WriteUInt32( aHeader.nV5Intent );
1529  rOStm.WriteUInt32( aHeader.nV5ProfileData );
1530  rOStm.WriteUInt32( aHeader.nV5ProfileSize );
1531  rOStm.WriteUInt32( aHeader.nV5Reserved );
1532  }
1533 
1534  if(ZCOMPRESS == aHeader.nCompression)
1535  {
1536  ZCodec aCodec;
1537  SvMemoryStream aMemStm(aHeader.nSizeImage + 4096, 65535);
1538  sal_uLong nCodedPos(rOStm.Tell());
1539  sal_uLong nLastPos(0);
1540  sal_uInt32 nCodedSize(0);
1541  sal_uInt32 nUncodedSize(0);
1542 
1543  // write uncoded data palette
1544  if(aHeader.nColsUsed)
1545  {
1546  ImplWriteDIBPalette(aMemStm, rAcc);
1547  }
1548 
1549  // write uncoded bits
1550  bRet = ImplWriteDIBBits(aMemStm, rAcc, pAccAlpha, nCompression, aHeader.nSizeImage);
1551 
1552  // get uncoded size
1553  nUncodedSize = aMemStm.Tell();
1554 
1555  // seek over compress info
1556  rOStm.SeekRel(12);
1557 
1558  // write compressed data
1559  aCodec.BeginCompression(3);
1560  aCodec.Write(rOStm, static_cast<sal_uInt8 const *>(aMemStm.GetData()), nUncodedSize);
1561  aCodec.EndCompression();
1562 
1563  // update compress info ( coded size, uncoded size, uncoded compression )
1564  nLastPos = rOStm.Tell();
1565  nCodedSize = nLastPos - nCodedPos - 12;
1566  rOStm.Seek(nCodedPos);
1567  rOStm.WriteUInt32( nCodedSize ).WriteUInt32( nUncodedSize ).WriteUInt32( nCompression );
1568  rOStm.Seek(nLastPos);
1569 
1570  if(bRet)
1571  {
1572  bRet = (ERRCODE_NONE == rOStm.GetError());
1573  }
1574  }
1575  else
1576  {
1577  if(aHeader.nColsUsed)
1578  {
1579  ImplWriteDIBPalette(rOStm, rAcc);
1580  }
1581 
1582  bRet = ImplWriteDIBBits(rOStm, rAcc, pAccAlpha, aHeader.nCompression, aHeader.nSizeImage);
1583  }
1584 
1585  nEndPos = rOStm.Tell();
1586  rOStm.Seek(nImageSizePos);
1587  rOStm.WriteUInt32( aHeader.nSizeImage );
1588  rOStm.Seek(nEndPos);
1589 
1590  return bRet;
1591 }
1592 
1593 bool ImplWriteDIBFileHeader(SvStream& rOStm, BitmapReadAccess const & rAcc)
1594 {
1595  const sal_uInt32 nPalCount((rAcc.HasPalette() ? rAcc.GetPaletteEntryCount() : isBitfieldCompression(rAcc.GetScanlineFormat()) ? 3UL : 0UL));
1596  const sal_uInt32 nOffset(14 + DIBINFOHEADERSIZE + nPalCount * 4UL);
1597 
1598  rOStm.WriteUInt16( 0x4D42 ); // 'MB' from BITMAPFILEHEADER
1599  rOStm.WriteUInt32( nOffset + (rAcc.Height() * rAcc.GetScanlineSize()) );
1600  rOStm.WriteUInt16( 0 );
1601  rOStm.WriteUInt16( 0 );
1602  rOStm.WriteUInt32( nOffset );
1603 
1604  return rOStm.GetError() == ERRCODE_NONE;
1605 }
1606 
1607 bool ImplReadDIB(
1608  Bitmap& rTarget,
1609  AlphaMask* pTargetAlpha,
1610  SvStream& rIStm,
1611  bool bFileHeader,
1612  bool bIsMask=false,
1613  bool bMSOFormat=false)
1614 {
1615  const SvStreamEndian nOldFormat(rIStm.GetEndian());
1616  const auto nOldPos(rIStm.Tell());
1617  sal_uLong nOffset(0);
1618  bool bRet(false);
1619 
1620  rIStm.SetEndian(SvStreamEndian::LITTLE);
1621 
1622  if(bFileHeader)
1623  {
1624  if(ImplReadDIBFileHeader(rIStm, nOffset))
1625  {
1626  bRet = ImplReadDIBBody(rIStm, rTarget, nOffset >= DIBV5HEADERSIZE ? pTargetAlpha : nullptr, nOffset, bIsMask, bMSOFormat);
1627  }
1628  }
1629  else
1630  {
1631  bRet = ImplReadDIBBody(rIStm, rTarget, nullptr, nOffset, bIsMask, bMSOFormat);
1632  }
1633 
1634  if(!bRet)
1635  {
1636  if(!rIStm.GetError())
1637  {
1639  }
1640 
1641  rIStm.Seek(nOldPos);
1642  }
1643 
1644  rIStm.SetEndian(nOldFormat);
1645 
1646  return bRet;
1647 }
1648 
1649 bool ImplWriteDIB(
1650  const Bitmap& rSource,
1651  SvStream& rOStm,
1652  bool bCompressed,
1653  bool bFileHeader)
1654 {
1655  const Size aSizePix(rSource.GetSizePixel());
1656  bool bRet(false);
1657 
1658  if(aSizePix.Width() && aSizePix.Height())
1659  {
1660  Bitmap::ScopedReadAccess pAcc(const_cast< Bitmap& >(rSource));
1661  Bitmap::ScopedReadAccess pAccAlpha;
1662  const SvStreamEndian nOldFormat(rOStm.GetEndian());
1663  const sal_uLong nOldPos(rOStm.Tell());
1664 
1665  rOStm.SetEndian(SvStreamEndian::LITTLE);
1666 
1667  if (pAcc)
1668  {
1669  if(bFileHeader)
1670  {
1671  if(ImplWriteDIBFileHeader(rOStm, *pAcc))
1672  {
1673  bRet = ImplWriteDIBBody(rSource, rOStm, *pAcc, pAccAlpha.get(), bCompressed);
1674  }
1675  }
1676  else
1677  {
1678  bRet = ImplWriteDIBBody(rSource, rOStm, *pAcc, pAccAlpha.get(), bCompressed);
1679  }
1680 
1681  pAcc.reset();
1682  }
1683 
1684  pAccAlpha.reset();
1685 
1686  if(!bRet)
1687  {
1689  rOStm.Seek(nOldPos);
1690  }
1691 
1692  rOStm.SetEndian(nOldFormat);
1693  }
1694 
1695  return bRet;
1696 }
1697 
1698 } // unnamed namespace
1699 
1700 bool ReadDIB(
1701  Bitmap& rTarget,
1702  SvStream& rIStm,
1703  bool bFileHeader,
1704  bool bMSOFormat)
1705 {
1706  return ImplReadDIB(rTarget, nullptr, rIStm, bFileHeader, false, bMSOFormat);
1707 }
1708 
1710  BitmapEx& rTarget,
1711  SvStream& rIStm,
1712  bool bFileHeader,
1713  bool bMSOFormat)
1714 {
1715  Bitmap aBmp;
1716  bool bRetval(ImplReadDIB(aBmp, nullptr, rIStm, bFileHeader, /*bMask*/false, bMSOFormat) && !rIStm.GetError());
1717 
1718  if(bRetval)
1719  {
1720  // base bitmap was read, set as return value and try to read alpha extra-data
1721  const sal_uLong nStmPos(rIStm.Tell());
1722  sal_uInt32 nMagic1(0);
1723  sal_uInt32 nMagic2(0);
1724 
1725  rTarget = BitmapEx(aBmp);
1726  if (rIStm.remainingSize() >= 4)
1727  rIStm.ReadUInt32( nMagic1 ).ReadUInt32( nMagic2 );
1728  bRetval = (0x25091962 == nMagic1) && (0xACB20201 == nMagic2) && !rIStm.GetError();
1729 
1730  if(bRetval)
1731  {
1732  sal_uInt8 tmp = 0;
1733  rIStm.ReadUChar( tmp );
1734  bRetval = !rIStm.GetError();
1735 
1736  if(bRetval)
1737  {
1738  switch (tmp)
1739  {
1740  case static_cast<int>(TransparentType::Bitmap):
1741  {
1742  Bitmap aMask;
1743 
1744  bRetval = ImplReadDIB(aMask, nullptr, rIStm, true, true);
1745 
1746  if(bRetval)
1747  {
1748  if(!aMask.IsEmpty())
1749  {
1750  // do we have an alpha mask?
1752  {
1753  AlphaMask aAlpha;
1754 
1755  // create alpha mask quickly (without greyscale conversion)
1756  aAlpha.ImplSetBitmap(aMask);
1757  rTarget = BitmapEx(aBmp, aAlpha);
1758  }
1759  else
1760  {
1761  rTarget = BitmapEx(aBmp, aMask);
1762  }
1763  }
1764  }
1765  break;
1766  }
1767  case 1: // backwards compat for old option TransparentType::Color
1768  {
1769  Color aTransparentColor;
1770 
1771  tools::GenericTypeSerializer aSerializer(rIStm);
1772  aSerializer.readColor(aTransparentColor);
1773 
1774  bRetval = !rIStm.GetError();
1775 
1776  if(bRetval)
1777  {
1778  rTarget = BitmapEx(aBmp, aTransparentColor);
1779  }
1780  break;
1781  }
1782  default: break;
1783  }
1784  }
1785  }
1786 
1787  if(!bRetval)
1788  {
1789  // alpha extra data could not be read; reset, but use base bitmap as result
1790  rIStm.ResetError();
1791  rIStm.Seek(nStmPos);
1792  bRetval = true;
1793  }
1794  }
1795 
1796  return bRetval;
1797 }
1798 
1800  Bitmap& rTarget,
1801  AlphaMask& rTargetAlpha,
1802  SvStream& rIStm)
1803 {
1804  return ImplReadDIB(rTarget, &rTargetAlpha, rIStm, true);
1805 }
1806 
1808  BitmapEx& rTarget,
1809  const unsigned char* pBuf,
1810  const ScanlineFormat nFormat,
1811  const int nHeight,
1812  const int nStride)
1813 {
1814  BitmapScopedWriteAccess pWriteAccess(rTarget.maBitmap.AcquireWriteAccess(), rTarget.maBitmap);
1815  for (int nRow = 0; nRow < nHeight; ++nRow)
1816  {
1817  pWriteAccess->CopyScanline(nRow, pBuf + (nStride * nRow), nFormat, nStride);
1818  }
1819 
1820  return true;
1821 }
1822 
1824  const Bitmap& rSource,
1825  SvStream& rOStm,
1826  bool bCompressed,
1827  bool bFileHeader)
1828 {
1829  return ImplWriteDIB(rSource, rOStm, bCompressed, bFileHeader);
1830 }
1831 
1833  const BitmapEx& rSource,
1834  SvStream& rOStm,
1835  bool bCompressed)
1836 {
1837  return ImplWriteDIB(rSource.GetBitmap(), rOStm, bCompressed, /*bFileHeader*/true);
1838 }
1839 
1841  const BitmapEx& rSource,
1842  SvStream& rOStm)
1843 {
1844  if(ImplWriteDIB(rSource.GetBitmap(), rOStm, true, true))
1845  {
1846  rOStm.WriteUInt32( 0x25091962 );
1847  rOStm.WriteUInt32( 0xACB20201 );
1848  rOStm.WriteUChar( static_cast<unsigned char>(rSource.meTransparent) );
1849 
1850  if(TransparentType::Bitmap == rSource.meTransparent)
1851  {
1852  return ImplWriteDIB(rSource.maMask, rOStm, true, true);
1853  }
1854  }
1855 
1856  return false;
1857 }
1858 
1860 {
1861  return DIBV5HEADERSIZE;
1862 }
1863 
1864 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
PixelFormat
Pixel format of the bitmap in bits per pixel.
Definition: BitmapTypes.hxx:19
sal_uInt32 getDIBV5HeaderSize()
Definition: dibtools.cxx:1859
SvStream & ReadInt16(sal_Int16 &rInt16)
sal_uInt8 GetIndexFromData(const sal_uInt8 *pData, tools::Long nX) const
Scanline GetBuffer() const
bool IsGreyPalette8Bit() const
Returns true if the palette is 8-bit grey palette.
tools::Long Height() const
sal_Int32 nIndex
void GetColorAndAlphaFor32Bit(BitmapColor &rColor, sal_uInt8 &rAlpha, const sal_uInt8 *pPixel) const
Definition: ColorMask.hxx:173
bool ReadDIB(Bitmap &rTarget, SvStream &rIStm, bool bFileHeader, bool bMSOFormat)
Definition: dibtools.cxx:1700
sal_uInt8 GetRed() const
void SetBlue(sal_uInt8 nBlue)
SvStream & WriteUInt16(sal_uInt16 nUInt16)
sal_uInt32 AlignedWidth4Bytes(sal_uInt32 nWidthBits)
void SetEntryCount(sal_uInt16 nCount)
SvStream & WriteInt32(sal_Int32 nInt32)
Bitmap maMask
Definition: bitmapex.hxx:477
SvStream & ReadUInt16(sal_uInt16 &rUInt16)
Point LogicToLogic(const Point &rPtSource, const MapMode *pMapModeSource, const MapMode *pMapModeDest) const
Definition: map.cxx:1466
sal_uInt32 GetRedMask() const
Definition: ColorMask.hxx:120
sal_Int32 GetVersion() const
virtual sal_uInt64 TellEnd()
sal_uIntPtr sal_uLong
long Long
sal_uInt8 GetLuminance() const
FilterGroup & rTarget
sal_Int64 n
sal_uInt16 GetBitCount() const
aBuf
sal_uInt64 Seek(sal_uInt64 nPos)
SAL_DLLPRIVATE void ImplSetBitmap(const Bitmap &rBitmap)
Definition: alpha.cxx:66
This template handles BitmapAccess the RAII way.
Size GetSizePixel() const
SvStreamCompressFlags GetCompressMode() const
sal_uInt64 SeekRel(sal_Int64 nPos)
sal_uInt8 SVBT32[4]
const Size & GetPrefSize() const
Definition: bitmap.hxx:562
#define DIBINFOHEADERSIZE
Definition: dibtools.cxx:40
#define SAL_MAX_UINT32
constexpr tools::Long Width() const
void SetPixelOnData(sal_uInt8 *pData, tools::Long nX, const BitmapColor &rBitmapColor)
ScanlineFormat
Definition: Scanline.hxx:29
ErrCode GetError() const
bool ReadDIBBitmapEx(BitmapEx &rTarget, SvStream &rIStm, bool bFileHeader, bool bMSOFormat)
Definition: dibtools.cxx:1709
const BorderLinePrimitive2D *pCandidateB assert(pCandidateA)
unsigned long ULong
bool HasGreyPalette8Bit() const
Scanline GetScanline(tools::Long nY) const
static bool IsFuzzing()
int nCount
void GetColorFor16BitLSB(BitmapColor &rColor, const sal_uInt8 *pPixel) const
Definition: ColorMask.hxx:150
SvStream & WriteUInt32(sal_uInt32 nUInt32)
#define RLE_8
Definition: dibtools.hxx:35
sal_uInt64 remainingSize()
sal_uInt8 GetBlue() const
B2IRange fround(const B2DRange &rRange)
constexpr OUStringLiteral aData
SvStream & ReadUInt32(sal_uInt32 &rUInt32)
const MapMode & GetPrefMapMode() const
Definition: bitmap.hxx:552
sal_uInt16 GetEntryCount() const
void SetPrefMapMode(const MapMode &rMapMode)
Definition: bitmap.hxx:557
#define RLE_4
Definition: dibtools.hxx:36
Bitmap maBitmap
Definition: bitmapex.hxx:476
sal_uInt8 * Scanline
Definition: Scanline.hxx:26
vcl::PixelFormat getPixelFormat() const
bool checkSeek(SvStream &rSt, sal_uInt64 nOffset)
bool WriteDIBBitmapEx(const BitmapEx &rSource, SvStream &rOStm)
Definition: dibtools.cxx:1840
sal_uInt32 GetScanlineSize() const
int i
#define COMPRESS_NONE
Definition: dibtools.hxx:34
bool HasPalette() const
ScanlineFormat GetScanlineFormat() const
bool CalcMaskShift()
Definition: ColorMask.hxx:58
BitmapColor GetColor(tools::Long nY, tools::Long nX) const
static bool equalZero(const double &rfVal)
#define SAL_MIN_INT32
constexpr std::enable_if_t< std::is_signed_v< T >, std::make_unsigned_t< T > > make_unsigned(T value)
tools::Long Width() const
std::size_t WriteBytes(const void *pData, std::size_t nSize)
std::enable_if< std::is_signed< T >::value, bool >::type checked_multiply(T a, T b, T &result)
void SetRed(sal_uInt8 nRed)
void BeginCompression(int nCompressLevel=ZCODEC_DEFAULT_COMPRESSION, bool gzLib=false)
tools::Long EndCompression()
void SetPrefSize(const Size &rSize)
Definition: bitmap.hxx:567
void SetError(ErrCode nErrorCode)
bool ReadDIBV5(Bitmap &rTarget, AlphaMask &rTargetAlpha, SvStream &rIStm)
Definition: dibtools.cxx:1799
SvStream & ReadUChar(unsigned char &rChar)
tools::Long Read(SvStream &rIStm, sal_uInt8 *pData, sal_uInt32 nSize)
SvStream & WriteStream(SvStream &rStream)
short nBitCount
Definition: ipict.cxx:80
#define ZCOMPRESS
Definition: dibtools.hxx:38
sal_uInt16 GetPaletteEntryCount() const
SvStream & ReadInt32(sal_Int32 &rInt32)
ColorMask & GetColorMask() const
std::size_t ReadBytes(void *pData, std::size_t nSize)
Bitmap GetBitmap(Color aTransparentReplaceColor) const
Definition: BitmapEx.cxx:229
sal_uInt8 GetGreen() const
float v
SvStreamEndian GetEndian() const
sal_Int32 FXPT2DOT30
Definition: dibtools.cxx:45
vcl::ScopedBitmapAccess< BitmapWriteAccess, AlphaMask,&AlphaMask::AcquireAlphaWriteAccess > AlphaScopedWriteAccess
std::unique_ptr< char[]> aBuffer
#define SOFFICE_FILEFORMAT_40
#define SAL_WARN_IF(condition, area, stream)
#define ERRCODE_NONE
Definition: errcode.hxx:196
constexpr tools::Long Height() const
unsigned char sal_uInt8
void SetGreen(sal_uInt8 nGreen)
void SetEndian(SvStreamEndian SvStreamEndian)
SvStream & WriteUChar(unsigned char nChar)
#define SVSTREAM_FILEFORMAT_ERROR
Definition: errcode.hxx:260
BitmapWriteAccess * AcquireWriteAccess()
bool IsEmpty() const
Definition: bitmap.hxx:547
sal_uInt64 Tell() const
bool IsBottomUp() const
sal_uInt32 GetBlueMask() const
Definition: ColorMask.hxx:130
TransparentType meTransparent
Definition: bitmapex.hxx:479
#define DIBV5HEADERSIZE
Definition: dibtools.cxx:41
void GetColorFor32Bit(BitmapColor &rColor, const sal_uInt8 *pPixel) const
Definition: ColorMask.hxx:165
bool good() const
#define SAL_WARN(area, stream)
SvStreamEndian
const BitmapColor & GetPaletteColor(sal_uInt16 nColor) const
sal_uInt32 GetGreenMask() const
Definition: ColorMask.hxx:125
virtual void ResetError()
#define BITFIELDS
Definition: dibtools.hxx:37
bool WriteDIB(const Bitmap &rSource, SvStream &rOStm, bool bCompressed, bool bFileHeader)
Definition: dibtools.cxx:1823
#define SVSTREAM_GENERALERROR
Definition: errcode.hxx:240
#define DIBCOREHEADERSIZE
Definition: dibtools.cxx:39
bool ReadRawDIB(BitmapEx &rTarget, const unsigned char *pBuf, const ScanlineFormat nFormat, const int nHeight, const int nStride)
Definition: dibtools.cxx:1807
void Write(SvStream &rOStm, const sal_uInt8 *pData, sal_uInt32 nSize)
const void * GetData()
void readColor(Color &rColor)