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1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2014 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 | 6 |
7 #include "core/fxcodec/jbig2/JBig2_Context.h" | 7 #include "core/fxcodec/jbig2/JBig2_Context.h" |
8 | 8 |
9 #include <algorithm> | 9 #include <algorithm> |
10 #include <list> | 10 #include <list> |
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295 FX_Alloc(FX_DWORD, pSegment->m_nReferred_to_segment_count); | 295 FX_Alloc(FX_DWORD, pSegment->m_nReferred_to_segment_count); |
296 for (int32_t i = 0; i < pSegment->m_nReferred_to_segment_count; ++i) { | 296 for (int32_t i = 0; i < pSegment->m_nReferred_to_segment_count; ++i) { |
297 switch (cSSize) { | 297 switch (cSSize) { |
298 case 1: | 298 case 1: |
299 if (m_pStream->read1Byte(&cTemp) != 0) | 299 if (m_pStream->read1Byte(&cTemp) != 0) |
300 return JBIG2_ERROR_TOO_SHORT; | 300 return JBIG2_ERROR_TOO_SHORT; |
301 | 301 |
302 pSegment->m_pReferred_to_segment_numbers[i] = cTemp; | 302 pSegment->m_pReferred_to_segment_numbers[i] = cTemp; |
303 break; | 303 break; |
304 case 2: | 304 case 2: |
305 FX_WORD wTemp; | 305 uint16_t wTemp; |
306 if (m_pStream->readShortInteger(&wTemp) != 0) | 306 if (m_pStream->readShortInteger(&wTemp) != 0) |
307 return JBIG2_ERROR_TOO_SHORT; | 307 return JBIG2_ERROR_TOO_SHORT; |
308 | 308 |
309 pSegment->m_pReferred_to_segment_numbers[i] = wTemp; | 309 pSegment->m_pReferred_to_segment_numbers[i] = wTemp; |
310 break; | 310 break; |
311 case 4: | 311 case 4: |
312 if (m_pStream->readInteger(&dwTemp) != 0) | 312 if (m_pStream->readInteger(&dwTemp) != 0) |
313 return JBIG2_ERROR_TOO_SHORT; | 313 return JBIG2_ERROR_TOO_SHORT; |
314 | 314 |
315 pSegment->m_pReferred_to_segment_numbers[i] = dwTemp; | 315 pSegment->m_pReferred_to_segment_numbers[i] = dwTemp; |
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372 if (!m_bInPage) | 372 if (!m_bInPage) |
373 return JBIG2_ERROR_FATAL; | 373 return JBIG2_ERROR_FATAL; |
374 return parseGenericRegion(pSegment, pPause); | 374 return parseGenericRegion(pSegment, pPause); |
375 case 40: | 375 case 40: |
376 case 42: | 376 case 42: |
377 case 43: | 377 case 43: |
378 if (!m_bInPage) | 378 if (!m_bInPage) |
379 return JBIG2_ERROR_FATAL; | 379 return JBIG2_ERROR_FATAL; |
380 return parseGenericRefinementRegion(pSegment); | 380 return parseGenericRefinementRegion(pSegment); |
381 case 48: { | 381 case 48: { |
382 FX_WORD wTemp; | 382 uint16_t wTemp; |
383 std::unique_ptr<JBig2PageInfo> pPageInfo(new JBig2PageInfo); | 383 std::unique_ptr<JBig2PageInfo> pPageInfo(new JBig2PageInfo); |
384 if (m_pStream->readInteger(&pPageInfo->m_dwWidth) != 0 || | 384 if (m_pStream->readInteger(&pPageInfo->m_dwWidth) != 0 || |
385 m_pStream->readInteger(&pPageInfo->m_dwHeight) != 0 || | 385 m_pStream->readInteger(&pPageInfo->m_dwHeight) != 0 || |
386 m_pStream->readInteger(&pPageInfo->m_dwResolutionX) != 0 || | 386 m_pStream->readInteger(&pPageInfo->m_dwResolutionX) != 0 || |
387 m_pStream->readInteger(&pPageInfo->m_dwResolutionY) != 0 || | 387 m_pStream->readInteger(&pPageInfo->m_dwResolutionY) != 0 || |
388 m_pStream->read1Byte(&pPageInfo->m_cFlags) != 0 || | 388 m_pStream->read1Byte(&pPageInfo->m_cFlags) != 0 || |
389 m_pStream->readShortInteger(&wTemp) != 0) { | 389 m_pStream->readShortInteger(&wTemp) != 0) { |
390 return JBIG2_ERROR_TOO_SHORT; | 390 return JBIG2_ERROR_TOO_SHORT; |
391 } | 391 } |
392 pPageInfo->m_bIsStriped = !!(wTemp & 0x8000); | 392 pPageInfo->m_bIsStriped = !!(wTemp & 0x8000); |
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428 m_pStream->offset(pSegment->m_dwData_length); | 428 m_pStream->offset(pSegment->m_dwData_length); |
429 break; | 429 break; |
430 default: | 430 default: |
431 break; | 431 break; |
432 } | 432 } |
433 return JBIG2_SUCCESS; | 433 return JBIG2_SUCCESS; |
434 } | 434 } |
435 | 435 |
436 int32_t CJBig2_Context::parseSymbolDict(CJBig2_Segment* pSegment, | 436 int32_t CJBig2_Context::parseSymbolDict(CJBig2_Segment* pSegment, |
437 IFX_Pause* pPause) { | 437 IFX_Pause* pPause) { |
438 FX_WORD wFlags; | 438 uint16_t wFlags; |
439 if (m_pStream->readShortInteger(&wFlags) != 0) | 439 if (m_pStream->readShortInteger(&wFlags) != 0) |
440 return JBIG2_ERROR_TOO_SHORT; | 440 return JBIG2_ERROR_TOO_SHORT; |
441 | 441 |
442 std::unique_ptr<CJBig2_SDDProc> pSymbolDictDecoder(new CJBig2_SDDProc); | 442 std::unique_ptr<CJBig2_SDDProc> pSymbolDictDecoder(new CJBig2_SDDProc); |
443 pSymbolDictDecoder->SDHUFF = wFlags & 0x0001; | 443 pSymbolDictDecoder->SDHUFF = wFlags & 0x0001; |
444 pSymbolDictDecoder->SDREFAGG = (wFlags >> 1) & 0x0001; | 444 pSymbolDictDecoder->SDREFAGG = (wFlags >> 1) & 0x0001; |
445 pSymbolDictDecoder->SDTEMPLATE = (wFlags >> 10) & 0x0003; | 445 pSymbolDictDecoder->SDTEMPLATE = (wFlags >> 10) & 0x0003; |
446 pSymbolDictDecoder->SDRTEMPLATE = (wFlags >> 12) & 0x0003; | 446 pSymbolDictDecoder->SDRTEMPLATE = (wFlags >> 12) & 0x0003; |
447 uint8_t cSDHUFFDH = (wFlags >> 2) & 0x0003; | 447 uint8_t cSDHUFFDH = (wFlags >> 2) & 0x0003; |
448 uint8_t cSDHUFFDW = (wFlags >> 4) & 0x0003; | 448 uint8_t cSDHUFFDW = (wFlags >> 4) & 0x0003; |
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646 if (wFlags & 0x0200) { | 646 if (wFlags & 0x0200) { |
647 if (bUseGbContext) | 647 if (bUseGbContext) |
648 pSegment->m_Result.sd->SetGbContext(gbContext); | 648 pSegment->m_Result.sd->SetGbContext(gbContext); |
649 if (bUseGrContext) | 649 if (bUseGrContext) |
650 pSegment->m_Result.sd->SetGrContext(grContext); | 650 pSegment->m_Result.sd->SetGrContext(grContext); |
651 } | 651 } |
652 return JBIG2_SUCCESS; | 652 return JBIG2_SUCCESS; |
653 } | 653 } |
654 | 654 |
655 int32_t CJBig2_Context::parseTextRegion(CJBig2_Segment* pSegment) { | 655 int32_t CJBig2_Context::parseTextRegion(CJBig2_Segment* pSegment) { |
656 FX_WORD wFlags; | 656 uint16_t wFlags; |
657 JBig2RegionInfo ri; | 657 JBig2RegionInfo ri; |
658 if (parseRegionInfo(&ri) != JBIG2_SUCCESS || | 658 if (parseRegionInfo(&ri) != JBIG2_SUCCESS || |
659 m_pStream->readShortInteger(&wFlags) != 0) { | 659 m_pStream->readShortInteger(&wFlags) != 0) { |
660 return JBIG2_ERROR_TOO_SHORT; | 660 return JBIG2_ERROR_TOO_SHORT; |
661 } | 661 } |
662 | 662 |
663 std::unique_ptr<CJBig2_TRDProc> pTRD(new CJBig2_TRDProc); | 663 std::unique_ptr<CJBig2_TRDProc> pTRD(new CJBig2_TRDProc); |
664 pTRD->SBW = ri.width; | 664 pTRD->SBW = ri.width; |
665 pTRD->SBH = ri.height; | 665 pTRD->SBH = ri.height; |
666 pTRD->SBHUFF = wFlags & 0x0001; | 666 pTRD->SBHUFF = wFlags & 0x0001; |
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1408 SBSYMCODES[CURTEMP].code = CURCODE; | 1408 SBSYMCODES[CURTEMP].code = CURCODE; |
1409 CURCODE = CURCODE + 1; | 1409 CURCODE = CURCODE + 1; |
1410 } | 1410 } |
1411 CURTEMP = CURTEMP + 1; | 1411 CURTEMP = CURTEMP + 1; |
1412 } | 1412 } |
1413 CURLEN = CURLEN + 1; | 1413 CURLEN = CURLEN + 1; |
1414 } | 1414 } |
1415 FX_Free(LENCOUNT); | 1415 FX_Free(LENCOUNT); |
1416 FX_Free(FIRSTCODE); | 1416 FX_Free(FIRSTCODE); |
1417 } | 1417 } |
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