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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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