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Unified Diff: core/src/fxcodec/jbig2/JBig2_Context.cpp

Issue 1800523005: Move core/src/ up to core/. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: Created 4 years, 9 months ago
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Index: core/src/fxcodec/jbig2/JBig2_Context.cpp
diff --git a/core/src/fxcodec/jbig2/JBig2_Context.cpp b/core/src/fxcodec/jbig2/JBig2_Context.cpp
deleted file mode 100644
index 9279971b46c21ec9381c107c8b79bfb4c7e75cdf..0000000000000000000000000000000000000000
--- a/core/src/fxcodec/jbig2/JBig2_Context.cpp
+++ /dev/null
@@ -1,1439 +0,0 @@
-// Copyright 2014 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#include "core/src/fxcodec/jbig2/JBig2_Context.h"
-
-#include <algorithm>
-#include <list>
-#include <utility>
-#include <vector>
-
-#include "core/include/fpdfapi/cpdf_stream.h"
-#include "core/src/fxcodec/jbig2/JBig2_ArithDecoder.h"
-#include "core/src/fxcodec/jbig2/JBig2_BitStream.h"
-#include "core/src/fxcodec/jbig2/JBig2_GrdProc.h"
-#include "core/src/fxcodec/jbig2/JBig2_GrrdProc.h"
-#include "core/src/fxcodec/jbig2/JBig2_HtrdProc.h"
-#include "core/src/fxcodec/jbig2/JBig2_HuffmanTable_Standard.h"
-#include "core/src/fxcodec/jbig2/JBig2_PddProc.h"
-#include "core/src/fxcodec/jbig2/JBig2_SddProc.h"
-#include "core/src/fxcodec/jbig2/JBig2_TrdProc.h"
-#include "third_party/base/stl_util.h"
-
-namespace {
-
-size_t GetHuffContextSize(uint8_t val) {
- return val == 0 ? 65536 : val == 1 ? 8192 : 1024;
-}
-
-size_t GetRefAggContextSize(FX_BOOL val) {
- return val ? 1024 : 8192;
-}
-
-} // namespace
-
-// Implement a very small least recently used (LRU) cache. It is very
-// common for a JBIG2 dictionary to span multiple pages in a PDF file,
-// and we do not want to decode the same dictionary over and over
-// again. We key off of the memory location of the dictionary. The
-// list keeps track of the freshness of entries, with freshest ones
-// at the front. Even a tiny cache size like 2 makes a dramatic
-// difference for typical JBIG2 documents.
-static const int kSymbolDictCacheMaxSize = 2;
-
-CJBig2_Context* CJBig2_Context::CreateContext(
- CPDF_StreamAcc* pGlobalStream,
- CPDF_StreamAcc* pSrcStream,
- std::list<CJBig2_CachePair>* pSymbolDictCache,
- IFX_Pause* pPause) {
- return new CJBig2_Context(pGlobalStream, pSrcStream, pSymbolDictCache, pPause,
- false);
-}
-
-void CJBig2_Context::DestroyContext(CJBig2_Context* pContext) {
- delete pContext;
-}
-
-CJBig2_Context::CJBig2_Context(CPDF_StreamAcc* pGlobalStream,
- CPDF_StreamAcc* pSrcStream,
- std::list<CJBig2_CachePair>* pSymbolDictCache,
- IFX_Pause* pPause,
- bool bIsGlobal)
- : m_nSegmentDecoded(0),
- m_bInPage(false),
- m_bBufSpecified(false),
- m_PauseStep(10),
- m_pPause(pPause),
- m_ProcessingStatus(FXCODEC_STATUS_FRAME_READY),
- m_gbContext(NULL),
- m_dwOffset(0),
- m_pSymbolDictCache(pSymbolDictCache),
- m_bIsGlobal(bIsGlobal) {
- if (pGlobalStream && (pGlobalStream->GetSize() > 0)) {
- m_pGlobalContext = new CJBig2_Context(nullptr, pGlobalStream,
- pSymbolDictCache, pPause, true);
- } else {
- m_pGlobalContext = nullptr;
- }
-
- m_pStream.reset(new CJBig2_BitStream(pSrcStream));
-}
-
-CJBig2_Context::~CJBig2_Context() {
- FX_Free(m_gbContext);
- m_gbContext = NULL;
- delete m_pGlobalContext;
- m_pGlobalContext = NULL;
-}
-
-int32_t CJBig2_Context::decode_SquentialOrgnazation(IFX_Pause* pPause) {
- int32_t nRet;
- if (m_pStream->getByteLeft() <= 0)
- return JBIG2_END_OF_FILE;
-
- while (m_pStream->getByteLeft() >= JBIG2_MIN_SEGMENT_SIZE) {
- if (!m_pSegment) {
- m_pSegment.reset(new CJBig2_Segment);
- nRet = parseSegmentHeader(m_pSegment.get());
- if (nRet != JBIG2_SUCCESS) {
- m_pSegment.reset();
- return nRet;
- }
- m_dwOffset = m_pStream->getOffset();
- }
- nRet = parseSegmentData(m_pSegment.get(), pPause);
- if (m_ProcessingStatus == FXCODEC_STATUS_DECODE_TOBECONTINUE) {
- m_ProcessingStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE;
- m_PauseStep = 2;
- return JBIG2_SUCCESS;
- }
- if (nRet == JBIG2_END_OF_PAGE || nRet == JBIG2_END_OF_FILE) {
- m_pSegment.reset();
- return JBIG2_SUCCESS;
- }
- if (nRet != JBIG2_SUCCESS) {
- m_pSegment.reset();
- return nRet;
- }
- if (m_pSegment->m_dwData_length != 0xffffffff) {
- m_dwOffset += m_pSegment->m_dwData_length;
- m_pStream->setOffset(m_dwOffset);
- } else {
- m_pStream->offset(4);
- }
- m_SegmentList.push_back(m_pSegment.release());
- if (m_pStream->getByteLeft() > 0 && m_pPage && pPause &&
- pPause->NeedToPauseNow()) {
- m_ProcessingStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE;
- m_PauseStep = 2;
- return JBIG2_SUCCESS;
- }
- }
- return JBIG2_SUCCESS;
-}
-int32_t CJBig2_Context::decode_EmbedOrgnazation(IFX_Pause* pPause) {
- return decode_SquentialOrgnazation(pPause);
-}
-int32_t CJBig2_Context::decode_RandomOrgnazation_FirstPage(IFX_Pause* pPause) {
- int32_t nRet;
- while (m_pStream->getByteLeft() > JBIG2_MIN_SEGMENT_SIZE) {
- std::unique_ptr<CJBig2_Segment> pSegment(new CJBig2_Segment);
- nRet = parseSegmentHeader(pSegment.get());
- if (nRet != JBIG2_SUCCESS) {
- return nRet;
- } else if (pSegment->m_cFlags.s.type == 51) {
- break;
- }
- m_SegmentList.push_back(pSegment.release());
- if (pPause && m_pPause && pPause->NeedToPauseNow()) {
- m_PauseStep = 3;
- m_ProcessingStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE;
- return JBIG2_SUCCESS;
- }
- }
- m_nSegmentDecoded = 0;
- return decode_RandomOrgnazation(pPause);
-}
-int32_t CJBig2_Context::decode_RandomOrgnazation(IFX_Pause* pPause) {
- for (; m_nSegmentDecoded < m_SegmentList.size(); ++m_nSegmentDecoded) {
- int32_t nRet =
- parseSegmentData(m_SegmentList.get(m_nSegmentDecoded), pPause);
- if (nRet == JBIG2_END_OF_PAGE || nRet == JBIG2_END_OF_FILE)
- return JBIG2_SUCCESS;
-
- if (nRet != JBIG2_SUCCESS)
- return nRet;
-
- if (m_pPage && pPause && pPause->NeedToPauseNow()) {
- m_PauseStep = 4;
- m_ProcessingStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE;
- return JBIG2_SUCCESS;
- }
- }
- return JBIG2_SUCCESS;
-}
-int32_t CJBig2_Context::getFirstPage(uint8_t* pBuf,
- int32_t width,
- int32_t height,
- int32_t stride,
- IFX_Pause* pPause) {
- int32_t nRet = 0;
- if (m_pGlobalContext) {
- nRet = m_pGlobalContext->decode_EmbedOrgnazation(pPause);
- if (nRet != JBIG2_SUCCESS) {
- m_ProcessingStatus = FXCODEC_STATUS_ERROR;
- return nRet;
- }
- }
- m_PauseStep = 0;
- m_pPage.reset(new CJBig2_Image(width, height, stride, pBuf));
- m_bBufSpecified = true;
- if (pPause && pPause->NeedToPauseNow()) {
- m_PauseStep = 1;
- m_ProcessingStatus = FXCODEC_STATUS_DECODE_TOBECONTINUE;
- return nRet;
- }
- return Continue(pPause);
-}
-int32_t CJBig2_Context::Continue(IFX_Pause* pPause) {
- m_ProcessingStatus = FXCODEC_STATUS_DECODE_READY;
- int32_t nRet;
- if (m_PauseStep <= 1) {
- nRet = decode_EmbedOrgnazation(pPause);
- } else if (m_PauseStep == 2) {
- nRet = decode_SquentialOrgnazation(pPause);
- } else if (m_PauseStep == 3) {
- nRet = decode_RandomOrgnazation_FirstPage(pPause);
- } else if (m_PauseStep == 4) {
- nRet = decode_RandomOrgnazation(pPause);
- } else if (m_PauseStep == 5) {
- m_ProcessingStatus = FXCODEC_STATUS_DECODE_FINISH;
- return JBIG2_SUCCESS;
- }
- if (m_ProcessingStatus == FXCODEC_STATUS_DECODE_TOBECONTINUE) {
- return nRet;
- }
- m_PauseStep = 5;
- if (!m_bBufSpecified && nRet == JBIG2_SUCCESS) {
- m_ProcessingStatus = FXCODEC_STATUS_DECODE_FINISH;
- return JBIG2_SUCCESS;
- }
- if (nRet == JBIG2_SUCCESS) {
- m_ProcessingStatus = FXCODEC_STATUS_DECODE_FINISH;
- } else {
- m_ProcessingStatus = FXCODEC_STATUS_ERROR;
- }
- return nRet;
-}
-
-CJBig2_Segment* CJBig2_Context::findSegmentByNumber(FX_DWORD dwNumber) {
- if (m_pGlobalContext) {
- CJBig2_Segment* pSeg = m_pGlobalContext->findSegmentByNumber(dwNumber);
- if (pSeg) {
- return pSeg;
- }
- }
- for (size_t i = 0; i < m_SegmentList.size(); ++i) {
- CJBig2_Segment* pSeg = m_SegmentList.get(i);
- if (pSeg->m_dwNumber == dwNumber) {
- return pSeg;
- }
- }
- return nullptr;
-}
-CJBig2_Segment* CJBig2_Context::findReferredSegmentByTypeAndIndex(
- CJBig2_Segment* pSegment,
- uint8_t cType,
- int32_t nIndex) {
- int32_t count = 0;
- for (int32_t i = 0; i < pSegment->m_nReferred_to_segment_count; ++i) {
- CJBig2_Segment* pSeg =
- findSegmentByNumber(pSegment->m_pReferred_to_segment_numbers[i]);
- if (pSeg && pSeg->m_cFlags.s.type == cType) {
- if (count == nIndex)
- return pSeg;
- ++count;
- }
- }
- return NULL;
-}
-int32_t CJBig2_Context::parseSegmentHeader(CJBig2_Segment* pSegment) {
- if (m_pStream->readInteger(&pSegment->m_dwNumber) != 0 ||
- m_pStream->read1Byte(&pSegment->m_cFlags.c) != 0) {
- return JBIG2_ERROR_TOO_SHORT;
- }
-
- FX_DWORD dwTemp;
- uint8_t cTemp = m_pStream->getCurByte();
- if ((cTemp >> 5) == 7) {
- if (m_pStream->readInteger(
- (FX_DWORD*)&pSegment->m_nReferred_to_segment_count) != 0) {
- return JBIG2_ERROR_TOO_SHORT;
- }
- pSegment->m_nReferred_to_segment_count &= 0x1fffffff;
- if (pSegment->m_nReferred_to_segment_count >
- JBIG2_MAX_REFERRED_SEGMENT_COUNT) {
- return JBIG2_ERROR_LIMIT;
- }
- dwTemp = 5 + 4 + (pSegment->m_nReferred_to_segment_count + 1) / 8;
- } else {
- if (m_pStream->read1Byte(&cTemp) != 0)
- return JBIG2_ERROR_TOO_SHORT;
-
- pSegment->m_nReferred_to_segment_count = cTemp >> 5;
- dwTemp = 5 + 1;
- }
- uint8_t cSSize =
- pSegment->m_dwNumber > 65536 ? 4 : pSegment->m_dwNumber > 256 ? 2 : 1;
- uint8_t cPSize = pSegment->m_cFlags.s.page_association_size ? 4 : 1;
- if (pSegment->m_nReferred_to_segment_count) {
- pSegment->m_pReferred_to_segment_numbers =
- FX_Alloc(FX_DWORD, pSegment->m_nReferred_to_segment_count);
- for (int32_t i = 0; i < pSegment->m_nReferred_to_segment_count; ++i) {
- switch (cSSize) {
- case 1:
- if (m_pStream->read1Byte(&cTemp) != 0)
- return JBIG2_ERROR_TOO_SHORT;
-
- pSegment->m_pReferred_to_segment_numbers[i] = cTemp;
- break;
- case 2:
- FX_WORD wTemp;
- if (m_pStream->readShortInteger(&wTemp) != 0)
- return JBIG2_ERROR_TOO_SHORT;
-
- pSegment->m_pReferred_to_segment_numbers[i] = wTemp;
- break;
- case 4:
- if (m_pStream->readInteger(&dwTemp) != 0)
- return JBIG2_ERROR_TOO_SHORT;
-
- pSegment->m_pReferred_to_segment_numbers[i] = dwTemp;
- break;
- }
- if (pSegment->m_pReferred_to_segment_numbers[i] >= pSegment->m_dwNumber)
- return JBIG2_ERROR_TOO_SHORT;
- }
- }
- if (cPSize == 1) {
- if (m_pStream->read1Byte(&cTemp) != 0)
- return JBIG2_ERROR_TOO_SHORT;
- pSegment->m_dwPage_association = cTemp;
- } else {
- if (m_pStream->readInteger(&pSegment->m_dwPage_association) != 0) {
- return JBIG2_ERROR_TOO_SHORT;
- }
- }
- if (m_pStream->readInteger(&pSegment->m_dwData_length) != 0)
- return JBIG2_ERROR_TOO_SHORT;
-
- pSegment->m_dwObjNum = m_pStream->getObjNum();
- pSegment->m_dwDataOffset = m_pStream->getOffset();
- pSegment->m_State = JBIG2_SEGMENT_DATA_UNPARSED;
- return JBIG2_SUCCESS;
-}
-
-int32_t CJBig2_Context::parseSegmentData(CJBig2_Segment* pSegment,
- IFX_Pause* pPause) {
- int32_t ret = ProcessingParseSegmentData(pSegment, pPause);
- while (m_ProcessingStatus == FXCODEC_STATUS_DECODE_TOBECONTINUE &&
- m_pStream->getByteLeft() > 0) {
- ret = ProcessingParseSegmentData(pSegment, pPause);
- }
- return ret;
-}
-
-int32_t CJBig2_Context::ProcessingParseSegmentData(CJBig2_Segment* pSegment,
- IFX_Pause* pPause) {
- switch (pSegment->m_cFlags.s.type) {
- case 0:
- return parseSymbolDict(pSegment, pPause);
- case 4:
- case 6:
- case 7:
- if (!m_bInPage)
- return JBIG2_ERROR_FATAL;
- return parseTextRegion(pSegment);
- case 16:
- return parsePatternDict(pSegment, pPause);
- case 20:
- case 22:
- case 23:
- if (!m_bInPage)
- return JBIG2_ERROR_FATAL;
- return parseHalftoneRegion(pSegment, pPause);
- case 36:
- case 38:
- case 39:
- if (!m_bInPage)
- return JBIG2_ERROR_FATAL;
- return parseGenericRegion(pSegment, pPause);
- case 40:
- case 42:
- case 43:
- if (!m_bInPage)
- return JBIG2_ERROR_FATAL;
- return parseGenericRefinementRegion(pSegment);
- case 48: {
- FX_WORD wTemp;
- std::unique_ptr<JBig2PageInfo> pPageInfo(new JBig2PageInfo);
- if (m_pStream->readInteger(&pPageInfo->m_dwWidth) != 0 ||
- m_pStream->readInteger(&pPageInfo->m_dwHeight) != 0 ||
- m_pStream->readInteger(&pPageInfo->m_dwResolutionX) != 0 ||
- m_pStream->readInteger(&pPageInfo->m_dwResolutionY) != 0 ||
- m_pStream->read1Byte(&pPageInfo->m_cFlags) != 0 ||
- m_pStream->readShortInteger(&wTemp) != 0) {
- return JBIG2_ERROR_TOO_SHORT;
- }
- pPageInfo->m_bIsStriped = !!(wTemp & 0x8000);
- pPageInfo->m_wMaxStripeSize = wTemp & 0x7fff;
- bool bMaxHeight = (pPageInfo->m_dwHeight == 0xffffffff);
- if (bMaxHeight && pPageInfo->m_bIsStriped != TRUE)
- pPageInfo->m_bIsStriped = TRUE;
-
- if (!m_bBufSpecified) {
- FX_DWORD height =
- bMaxHeight ? pPageInfo->m_wMaxStripeSize : pPageInfo->m_dwHeight;
- m_pPage.reset(new CJBig2_Image(pPageInfo->m_dwWidth, height));
- }
-
- if (!m_pPage->m_pData) {
- m_ProcessingStatus = FXCODEC_STATUS_ERROR;
- return JBIG2_ERROR_TOO_SHORT;
- }
-
- m_pPage->fill((pPageInfo->m_cFlags & 4) ? 1 : 0);
- m_PageInfoList.push_back(pPageInfo.release());
- m_bInPage = true;
- } break;
- case 49:
- m_bInPage = false;
- return JBIG2_END_OF_PAGE;
- break;
- case 50:
- m_pStream->offset(pSegment->m_dwData_length);
- break;
- case 51:
- return JBIG2_END_OF_FILE;
- case 52:
- m_pStream->offset(pSegment->m_dwData_length);
- break;
- case 53:
- return parseTable(pSegment);
- case 62:
- m_pStream->offset(pSegment->m_dwData_length);
- break;
- default:
- break;
- }
- return JBIG2_SUCCESS;
-}
-
-int32_t CJBig2_Context::parseSymbolDict(CJBig2_Segment* pSegment,
- IFX_Pause* pPause) {
- FX_WORD wFlags;
- if (m_pStream->readShortInteger(&wFlags) != 0)
- return JBIG2_ERROR_TOO_SHORT;
-
- std::unique_ptr<CJBig2_SDDProc> pSymbolDictDecoder(new CJBig2_SDDProc);
- pSymbolDictDecoder->SDHUFF = wFlags & 0x0001;
- pSymbolDictDecoder->SDREFAGG = (wFlags >> 1) & 0x0001;
- pSymbolDictDecoder->SDTEMPLATE = (wFlags >> 10) & 0x0003;
- pSymbolDictDecoder->SDRTEMPLATE = (wFlags >> 12) & 0x0003;
- uint8_t cSDHUFFDH = (wFlags >> 2) & 0x0003;
- uint8_t cSDHUFFDW = (wFlags >> 4) & 0x0003;
- uint8_t cSDHUFFBMSIZE = (wFlags >> 6) & 0x0001;
- uint8_t cSDHUFFAGGINST = (wFlags >> 7) & 0x0001;
- if (pSymbolDictDecoder->SDHUFF == 0) {
- const FX_DWORD dwTemp = (pSymbolDictDecoder->SDTEMPLATE == 0) ? 8 : 2;
- for (FX_DWORD i = 0; i < dwTemp; ++i) {
- if (m_pStream->read1Byte((uint8_t*)&pSymbolDictDecoder->SDAT[i]) != 0)
- return JBIG2_ERROR_TOO_SHORT;
- }
- }
- if (pSymbolDictDecoder->SDREFAGG == 1 &&
- pSymbolDictDecoder->SDRTEMPLATE == 0) {
- for (int32_t i = 0; i < 4; ++i) {
- if (m_pStream->read1Byte((uint8_t*)&pSymbolDictDecoder->SDRAT[i]) != 0)
- return JBIG2_ERROR_TOO_SHORT;
- }
- }
- if (m_pStream->readInteger(&pSymbolDictDecoder->SDNUMEXSYMS) != 0 ||
- m_pStream->readInteger(&pSymbolDictDecoder->SDNUMNEWSYMS) != 0) {
- return JBIG2_ERROR_TOO_SHORT;
- }
- if (pSymbolDictDecoder->SDNUMEXSYMS > JBIG2_MAX_EXPORT_SYSMBOLS ||
- pSymbolDictDecoder->SDNUMNEWSYMS > JBIG2_MAX_NEW_SYSMBOLS) {
- return JBIG2_ERROR_LIMIT;
- }
- for (int32_t i = 0; i < pSegment->m_nReferred_to_segment_count; ++i) {
- if (!findSegmentByNumber(pSegment->m_pReferred_to_segment_numbers[i]))
- return JBIG2_ERROR_FATAL;
- }
- CJBig2_Segment* pLRSeg = nullptr;
- pSymbolDictDecoder->SDNUMINSYMS = 0;
- for (int32_t i = 0; i < pSegment->m_nReferred_to_segment_count; ++i) {
- CJBig2_Segment* pSeg =
- findSegmentByNumber(pSegment->m_pReferred_to_segment_numbers[i]);
- if (pSeg->m_cFlags.s.type == 0) {
- pSymbolDictDecoder->SDNUMINSYMS += pSeg->m_Result.sd->NumImages();
- pLRSeg = pSeg;
- }
- }
-
- std::unique_ptr<CJBig2_Image*, FxFreeDeleter> SDINSYMS;
- if (pSymbolDictDecoder->SDNUMINSYMS != 0) {
- SDINSYMS.reset(FX_Alloc(CJBig2_Image*, pSymbolDictDecoder->SDNUMINSYMS));
- FX_DWORD dwTemp = 0;
- for (int32_t i = 0; i < pSegment->m_nReferred_to_segment_count; ++i) {
- CJBig2_Segment* pSeg =
- findSegmentByNumber(pSegment->m_pReferred_to_segment_numbers[i]);
- if (pSeg->m_cFlags.s.type == 0) {
- const CJBig2_SymbolDict& dict = *pSeg->m_Result.sd;
- for (size_t j = 0; j < dict.NumImages(); ++j)
- SDINSYMS.get()[dwTemp + j] = dict.GetImage(j);
- dwTemp += dict.NumImages();
- }
- }
- }
- pSymbolDictDecoder->SDINSYMS = SDINSYMS.get();
-
- std::unique_ptr<CJBig2_HuffmanTable> Table_B1;
- std::unique_ptr<CJBig2_HuffmanTable> Table_B2;
- std::unique_ptr<CJBig2_HuffmanTable> Table_B3;
- std::unique_ptr<CJBig2_HuffmanTable> Table_B4;
- std::unique_ptr<CJBig2_HuffmanTable> Table_B5;
- if (pSymbolDictDecoder->SDHUFF == 1) {
- if (cSDHUFFDH == 2 || cSDHUFFDW == 2)
- return JBIG2_ERROR_FATAL;
-
- int32_t nIndex = 0;
- if (cSDHUFFDH == 0) {
- Table_B4.reset(new CJBig2_HuffmanTable(HuffmanTable_B4,
- FX_ArraySize(HuffmanTable_B4),
- HuffmanTable_HTOOB_B4));
- pSymbolDictDecoder->SDHUFFDH = Table_B4.get();
- } else if (cSDHUFFDH == 1) {
- Table_B5.reset(new CJBig2_HuffmanTable(HuffmanTable_B5,
- FX_ArraySize(HuffmanTable_B5),
- HuffmanTable_HTOOB_B5));
- pSymbolDictDecoder->SDHUFFDH = Table_B5.get();
- } else {
- CJBig2_Segment* pSeg =
- findReferredSegmentByTypeAndIndex(pSegment, 53, nIndex++);
- if (!pSeg)
- return JBIG2_ERROR_FATAL;
- pSymbolDictDecoder->SDHUFFDH = pSeg->m_Result.ht;
- }
- if (cSDHUFFDW == 0) {
- Table_B2.reset(new CJBig2_HuffmanTable(HuffmanTable_B2,
- FX_ArraySize(HuffmanTable_B2),
- HuffmanTable_HTOOB_B2));
- pSymbolDictDecoder->SDHUFFDW = Table_B2.get();
- } else if (cSDHUFFDW == 1) {
- Table_B3.reset(new CJBig2_HuffmanTable(HuffmanTable_B3,
- FX_ArraySize(HuffmanTable_B3),
- HuffmanTable_HTOOB_B3));
- pSymbolDictDecoder->SDHUFFDW = Table_B3.get();
- } else {
- CJBig2_Segment* pSeg =
- findReferredSegmentByTypeAndIndex(pSegment, 53, nIndex++);
- if (!pSeg)
- return JBIG2_ERROR_FATAL;
- pSymbolDictDecoder->SDHUFFDW = pSeg->m_Result.ht;
- }
- if (cSDHUFFBMSIZE == 0) {
- Table_B1.reset(new CJBig2_HuffmanTable(HuffmanTable_B1,
- FX_ArraySize(HuffmanTable_B1),
- HuffmanTable_HTOOB_B1));
- pSymbolDictDecoder->SDHUFFBMSIZE = Table_B1.get();
- } else {
- CJBig2_Segment* pSeg =
- findReferredSegmentByTypeAndIndex(pSegment, 53, nIndex++);
- if (!pSeg)
- return JBIG2_ERROR_FATAL;
- pSymbolDictDecoder->SDHUFFBMSIZE = pSeg->m_Result.ht;
- }
- if (pSymbolDictDecoder->SDREFAGG == 1) {
- if (cSDHUFFAGGINST == 0) {
- if (!Table_B1) {
- Table_B1.reset(new CJBig2_HuffmanTable(HuffmanTable_B1,
- FX_ArraySize(HuffmanTable_B1),
- HuffmanTable_HTOOB_B1));
- }
- pSymbolDictDecoder->SDHUFFAGGINST = Table_B1.get();
- } else {
- CJBig2_Segment* pSeg =
- findReferredSegmentByTypeAndIndex(pSegment, 53, nIndex++);
- if (!pSeg)
- return JBIG2_ERROR_FATAL;
- pSymbolDictDecoder->SDHUFFAGGINST = pSeg->m_Result.ht;
- }
- }
- }
-
- const bool bUseGbContext = (pSymbolDictDecoder->SDHUFF == 0);
- const bool bUseGrContext = (pSymbolDictDecoder->SDREFAGG == 1);
- const size_t gbContextSize =
- GetHuffContextSize(pSymbolDictDecoder->SDTEMPLATE);
- const size_t grContextSize =
- GetRefAggContextSize(pSymbolDictDecoder->SDRTEMPLATE);
- std::vector<JBig2ArithCtx> gbContext;
- std::vector<JBig2ArithCtx> grContext;
- if ((wFlags & 0x0100) && pLRSeg) {
- if (bUseGbContext) {
- gbContext = pLRSeg->m_Result.sd->GbContext();
- if (gbContext.size() != gbContextSize)
- return JBIG2_ERROR_FATAL;
- }
- if (bUseGrContext) {
- grContext = pLRSeg->m_Result.sd->GrContext();
- if (grContext.size() != grContextSize)
- return JBIG2_ERROR_FATAL;
- }
- } else {
- if (bUseGbContext)
- gbContext.resize(gbContextSize);
- if (bUseGrContext)
- grContext.resize(grContextSize);
- }
-
- CJBig2_CacheKey key =
- CJBig2_CacheKey(pSegment->m_dwObjNum, pSegment->m_dwDataOffset);
- FX_BOOL cache_hit = false;
- pSegment->m_nResultType = JBIG2_SYMBOL_DICT_POINTER;
- if (m_bIsGlobal && key.first != 0) {
- for (auto it = m_pSymbolDictCache->begin(); it != m_pSymbolDictCache->end();
- ++it) {
- if (it->first == key) {
- std::unique_ptr<CJBig2_SymbolDict> copy(it->second->DeepCopy());
- pSegment->m_Result.sd = copy.release();
- m_pSymbolDictCache->push_front(*it);
- m_pSymbolDictCache->erase(it);
- cache_hit = true;
- break;
- }
- }
- }
- if (!cache_hit) {
- if (bUseGbContext) {
- std::unique_ptr<CJBig2_ArithDecoder> pArithDecoder(
- new CJBig2_ArithDecoder(m_pStream.get()));
- pSegment->m_Result.sd = pSymbolDictDecoder->decode_Arith(
- pArithDecoder.get(), &gbContext, &grContext);
- if (!pSegment->m_Result.sd)
- return JBIG2_ERROR_FATAL;
-
- m_pStream->alignByte();
- m_pStream->offset(2);
- } else {
- pSegment->m_Result.sd = pSymbolDictDecoder->decode_Huffman(
- m_pStream.get(), &gbContext, &grContext, pPause);
- if (!pSegment->m_Result.sd)
- return JBIG2_ERROR_FATAL;
- m_pStream->alignByte();
- }
- if (m_bIsGlobal && kSymbolDictCacheMaxSize > 0) {
- std::unique_ptr<CJBig2_SymbolDict> value =
- pSegment->m_Result.sd->DeepCopy();
- int size = pdfium::CollectionSize<int>(*m_pSymbolDictCache);
- while (size >= kSymbolDictCacheMaxSize) {
- delete m_pSymbolDictCache->back().second;
- m_pSymbolDictCache->pop_back();
- --size;
- }
- m_pSymbolDictCache->push_front(CJBig2_CachePair(key, value.release()));
- }
- }
- if (wFlags & 0x0200) {
- if (bUseGbContext)
- pSegment->m_Result.sd->SetGbContext(gbContext);
- if (bUseGrContext)
- pSegment->m_Result.sd->SetGrContext(grContext);
- }
- return JBIG2_SUCCESS;
-}
-
-int32_t CJBig2_Context::parseTextRegion(CJBig2_Segment* pSegment) {
- FX_WORD wFlags;
- JBig2RegionInfo ri;
- if (parseRegionInfo(&ri) != JBIG2_SUCCESS ||
- m_pStream->readShortInteger(&wFlags) != 0) {
- return JBIG2_ERROR_TOO_SHORT;
- }
-
- std::unique_ptr<CJBig2_TRDProc> pTRD(new CJBig2_TRDProc);
- pTRD->SBW = ri.width;
- pTRD->SBH = ri.height;
- pTRD->SBHUFF = wFlags & 0x0001;
- pTRD->SBREFINE = (wFlags >> 1) & 0x0001;
- FX_DWORD dwTemp = (wFlags >> 2) & 0x0003;
- pTRD->SBSTRIPS = 1 << dwTemp;
- pTRD->REFCORNER = (JBig2Corner)((wFlags >> 4) & 0x0003);
- pTRD->TRANSPOSED = (wFlags >> 6) & 0x0001;
- pTRD->SBCOMBOP = (JBig2ComposeOp)((wFlags >> 7) & 0x0003);
- pTRD->SBDEFPIXEL = (wFlags >> 9) & 0x0001;
- pTRD->SBDSOFFSET = (wFlags >> 10) & 0x001f;
- if (pTRD->SBDSOFFSET >= 0x0010) {
- pTRD->SBDSOFFSET = pTRD->SBDSOFFSET - 0x0020;
- }
- pTRD->SBRTEMPLATE = (wFlags >> 15) & 0x0001;
-
- uint8_t cSBHUFFFS;
- uint8_t cSBHUFFDS;
- uint8_t cSBHUFFDT;
- uint8_t cSBHUFFRDW;
- uint8_t cSBHUFFRDH;
- uint8_t cSBHUFFRDX;
- uint8_t cSBHUFFRDY;
- uint8_t cSBHUFFRSIZE;
- if (pTRD->SBHUFF == 1) {
- if (m_pStream->readShortInteger(&wFlags) != 0)
- return JBIG2_ERROR_TOO_SHORT;
-
- cSBHUFFFS = wFlags & 0x0003;
- cSBHUFFDS = (wFlags >> 2) & 0x0003;
- cSBHUFFDT = (wFlags >> 4) & 0x0003;
- cSBHUFFRDW = (wFlags >> 6) & 0x0003;
- cSBHUFFRDH = (wFlags >> 8) & 0x0003;
- cSBHUFFRDX = (wFlags >> 10) & 0x0003;
- cSBHUFFRDY = (wFlags >> 12) & 0x0003;
- cSBHUFFRSIZE = (wFlags >> 14) & 0x0001;
- }
- if (pTRD->SBREFINE == 1 && pTRD->SBRTEMPLATE == 0) {
- for (int32_t i = 0; i < 4; ++i) {
- if (m_pStream->read1Byte((uint8_t*)&pTRD->SBRAT[i]) != 0)
- return JBIG2_ERROR_TOO_SHORT;
- }
- }
- if (m_pStream->readInteger(&pTRD->SBNUMINSTANCES) != 0)
- return JBIG2_ERROR_TOO_SHORT;
-
- for (int32_t i = 0; i < pSegment->m_nReferred_to_segment_count; ++i) {
- if (!findSegmentByNumber(pSegment->m_pReferred_to_segment_numbers[i]))
- return JBIG2_ERROR_FATAL;
- }
-
- pTRD->SBNUMSYMS = 0;
- for (int32_t i = 0; i < pSegment->m_nReferred_to_segment_count; ++i) {
- CJBig2_Segment* pSeg =
- findSegmentByNumber(pSegment->m_pReferred_to_segment_numbers[i]);
- if (pSeg->m_cFlags.s.type == 0) {
- pTRD->SBNUMSYMS += pSeg->m_Result.sd->NumImages();
- }
- }
-
- std::unique_ptr<CJBig2_Image*, FxFreeDeleter> SBSYMS;
- if (pTRD->SBNUMSYMS > 0) {
- SBSYMS.reset(FX_Alloc(CJBig2_Image*, pTRD->SBNUMSYMS));
- dwTemp = 0;
- for (int32_t i = 0; i < pSegment->m_nReferred_to_segment_count; ++i) {
- CJBig2_Segment* pSeg =
- findSegmentByNumber(pSegment->m_pReferred_to_segment_numbers[i]);
- if (pSeg->m_cFlags.s.type == 0) {
- const CJBig2_SymbolDict& dict = *pSeg->m_Result.sd;
- for (size_t j = 0; j < dict.NumImages(); ++j)
- SBSYMS.get()[dwTemp + j] = dict.GetImage(j);
- dwTemp += dict.NumImages();
- }
- }
- pTRD->SBSYMS = SBSYMS.get();
- } else {
- pTRD->SBSYMS = NULL;
- }
-
- std::unique_ptr<JBig2HuffmanCode, FxFreeDeleter> SBSYMCODES;
- if (pTRD->SBHUFF == 1) {
- SBSYMCODES.reset(
- decodeSymbolIDHuffmanTable(m_pStream.get(), pTRD->SBNUMSYMS));
- if (!SBSYMCODES)
- return JBIG2_ERROR_FATAL;
-
- m_pStream->alignByte();
- pTRD->SBSYMCODES = SBSYMCODES.get();
- } else {
- dwTemp = 0;
- while ((FX_DWORD)(1 << dwTemp) < pTRD->SBNUMSYMS) {
- ++dwTemp;
- }
- pTRD->SBSYMCODELEN = (uint8_t)dwTemp;
- }
-
- std::unique_ptr<CJBig2_HuffmanTable> Table_B1;
- std::unique_ptr<CJBig2_HuffmanTable> Table_B6;
- std::unique_ptr<CJBig2_HuffmanTable> Table_B7;
- std::unique_ptr<CJBig2_HuffmanTable> Table_B8;
- std::unique_ptr<CJBig2_HuffmanTable> Table_B9;
- std::unique_ptr<CJBig2_HuffmanTable> Table_B10;
- std::unique_ptr<CJBig2_HuffmanTable> Table_B11;
- std::unique_ptr<CJBig2_HuffmanTable> Table_B12;
- std::unique_ptr<CJBig2_HuffmanTable> Table_B13;
- std::unique_ptr<CJBig2_HuffmanTable> Table_B14;
- std::unique_ptr<CJBig2_HuffmanTable> Table_B15;
- if (pTRD->SBHUFF == 1) {
- if (cSBHUFFFS == 2 || cSBHUFFRDW == 2 || cSBHUFFRDH == 2 ||
- cSBHUFFRDX == 2 || cSBHUFFRDY == 2) {
- return JBIG2_ERROR_FATAL;
- }
- int32_t nIndex = 0;
- if (cSBHUFFFS == 0) {
- Table_B6.reset(new CJBig2_HuffmanTable(HuffmanTable_B6,
- FX_ArraySize(HuffmanTable_B6),
- HuffmanTable_HTOOB_B6));
- pTRD->SBHUFFFS = Table_B6.get();
- } else if (cSBHUFFFS == 1) {
- Table_B7.reset(new CJBig2_HuffmanTable(HuffmanTable_B7,
- FX_ArraySize(HuffmanTable_B7),
- HuffmanTable_HTOOB_B7));
- pTRD->SBHUFFFS = Table_B7.get();
- } else {
- CJBig2_Segment* pSeg =
- findReferredSegmentByTypeAndIndex(pSegment, 53, nIndex++);
- if (!pSeg)
- return JBIG2_ERROR_FATAL;
- pTRD->SBHUFFFS = pSeg->m_Result.ht;
- }
- if (cSBHUFFDS == 0) {
- Table_B8.reset(new CJBig2_HuffmanTable(HuffmanTable_B8,
- FX_ArraySize(HuffmanTable_B8),
- HuffmanTable_HTOOB_B8));
- pTRD->SBHUFFDS = Table_B8.get();
- } else if (cSBHUFFDS == 1) {
- Table_B9.reset(new CJBig2_HuffmanTable(HuffmanTable_B9,
- FX_ArraySize(HuffmanTable_B9),
- HuffmanTable_HTOOB_B9));
- pTRD->SBHUFFDS = Table_B9.get();
- } else if (cSBHUFFDS == 2) {
- Table_B10.reset(new CJBig2_HuffmanTable(HuffmanTable_B10,
- FX_ArraySize(HuffmanTable_B10),
- HuffmanTable_HTOOB_B10));
- pTRD->SBHUFFDS = Table_B10.get();
- } else {
- CJBig2_Segment* pSeg =
- findReferredSegmentByTypeAndIndex(pSegment, 53, nIndex++);
- if (!pSeg)
- return JBIG2_ERROR_FATAL;
- pTRD->SBHUFFDS = pSeg->m_Result.ht;
- }
- if (cSBHUFFDT == 0) {
- Table_B11.reset(new CJBig2_HuffmanTable(HuffmanTable_B11,
- FX_ArraySize(HuffmanTable_B11),
- HuffmanTable_HTOOB_B11));
- pTRD->SBHUFFDT = Table_B11.get();
- } else if (cSBHUFFDT == 1) {
- Table_B12.reset(new CJBig2_HuffmanTable(HuffmanTable_B12,
- FX_ArraySize(HuffmanTable_B12),
- HuffmanTable_HTOOB_B12));
- pTRD->SBHUFFDT = Table_B12.get();
- } else if (cSBHUFFDT == 2) {
- Table_B13.reset(new CJBig2_HuffmanTable(HuffmanTable_B13,
- FX_ArraySize(HuffmanTable_B13),
- HuffmanTable_HTOOB_B13));
- pTRD->SBHUFFDT = Table_B13.get();
- } else {
- CJBig2_Segment* pSeg =
- findReferredSegmentByTypeAndIndex(pSegment, 53, nIndex++);
- if (!pSeg)
- return JBIG2_ERROR_FATAL;
- pTRD->SBHUFFDT = pSeg->m_Result.ht;
- }
- if (cSBHUFFRDW == 0) {
- Table_B14.reset(new CJBig2_HuffmanTable(HuffmanTable_B14,
- FX_ArraySize(HuffmanTable_B14),
- HuffmanTable_HTOOB_B14));
- pTRD->SBHUFFRDW = Table_B14.get();
- } else if (cSBHUFFRDW == 1) {
- Table_B15.reset(new CJBig2_HuffmanTable(HuffmanTable_B15,
- FX_ArraySize(HuffmanTable_B15),
- HuffmanTable_HTOOB_B15));
- pTRD->SBHUFFRDW = Table_B15.get();
- } else {
- CJBig2_Segment* pSeg =
- findReferredSegmentByTypeAndIndex(pSegment, 53, nIndex++);
- if (!pSeg)
- return JBIG2_ERROR_FATAL;
- pTRD->SBHUFFRDW = pSeg->m_Result.ht;
- }
- if (cSBHUFFRDH == 0) {
- if (!Table_B14) {
- Table_B14.reset(new CJBig2_HuffmanTable(HuffmanTable_B14,
- FX_ArraySize(HuffmanTable_B14),
- HuffmanTable_HTOOB_B14));
- }
- pTRD->SBHUFFRDH = Table_B14.get();
- } else if (cSBHUFFRDH == 1) {
- if (!Table_B15) {
- Table_B15.reset(new CJBig2_HuffmanTable(HuffmanTable_B15,
- FX_ArraySize(HuffmanTable_B15),
- HuffmanTable_HTOOB_B15));
- }
- pTRD->SBHUFFRDH = Table_B15.get();
- } else {
- CJBig2_Segment* pSeg =
- findReferredSegmentByTypeAndIndex(pSegment, 53, nIndex++);
- if (!pSeg)
- return JBIG2_ERROR_FATAL;
- pTRD->SBHUFFRDH = pSeg->m_Result.ht;
- }
- if (cSBHUFFRDX == 0) {
- if (!Table_B14) {
- Table_B14.reset(new CJBig2_HuffmanTable(HuffmanTable_B14,
- FX_ArraySize(HuffmanTable_B14),
- HuffmanTable_HTOOB_B14));
- }
- pTRD->SBHUFFRDX = Table_B14.get();
- } else if (cSBHUFFRDX == 1) {
- if (!Table_B15) {
- Table_B15.reset(new CJBig2_HuffmanTable(HuffmanTable_B15,
- FX_ArraySize(HuffmanTable_B15),
- HuffmanTable_HTOOB_B15));
- }
- pTRD->SBHUFFRDX = Table_B15.get();
- } else {
- CJBig2_Segment* pSeg =
- findReferredSegmentByTypeAndIndex(pSegment, 53, nIndex++);
- if (!pSeg)
- return JBIG2_ERROR_FATAL;
- pTRD->SBHUFFRDX = pSeg->m_Result.ht;
- }
- if (cSBHUFFRDY == 0) {
- if (!Table_B14) {
- Table_B14.reset(new CJBig2_HuffmanTable(HuffmanTable_B14,
- FX_ArraySize(HuffmanTable_B14),
- HuffmanTable_HTOOB_B14));
- }
- pTRD->SBHUFFRDY = Table_B14.get();
- } else if (cSBHUFFRDY == 1) {
- if (!Table_B15) {
- Table_B15.reset(new CJBig2_HuffmanTable(HuffmanTable_B15,
- FX_ArraySize(HuffmanTable_B15),
- HuffmanTable_HTOOB_B15));
- }
- pTRD->SBHUFFRDY = Table_B15.get();
- } else {
- CJBig2_Segment* pSeg =
- findReferredSegmentByTypeAndIndex(pSegment, 53, nIndex++);
- if (!pSeg)
- return JBIG2_ERROR_FATAL;
- pTRD->SBHUFFRDY = pSeg->m_Result.ht;
- }
- if (cSBHUFFRSIZE == 0) {
- Table_B1.reset(new CJBig2_HuffmanTable(HuffmanTable_B1,
- FX_ArraySize(HuffmanTable_B1),
- HuffmanTable_HTOOB_B1));
- pTRD->SBHUFFRSIZE = Table_B1.get();
- } else {
- CJBig2_Segment* pSeg =
- findReferredSegmentByTypeAndIndex(pSegment, 53, nIndex++);
- if (!pSeg)
- return JBIG2_ERROR_FATAL;
- pTRD->SBHUFFRSIZE = pSeg->m_Result.ht;
- }
- }
- std::unique_ptr<JBig2ArithCtx, FxFreeDeleter> grContext;
- if (pTRD->SBREFINE == 1) {
- const size_t size = GetRefAggContextSize(pTRD->SBRTEMPLATE);
- grContext.reset(FX_Alloc(JBig2ArithCtx, size));
- JBIG2_memset(grContext.get(), 0, sizeof(JBig2ArithCtx) * size);
- }
- if (pTRD->SBHUFF == 0) {
- std::unique_ptr<CJBig2_ArithDecoder> pArithDecoder(
- new CJBig2_ArithDecoder(m_pStream.get()));
- pSegment->m_nResultType = JBIG2_IMAGE_POINTER;
- pSegment->m_Result.im =
- pTRD->decode_Arith(pArithDecoder.get(), grContext.get(), nullptr);
- if (!pSegment->m_Result.im)
- return JBIG2_ERROR_FATAL;
- m_pStream->alignByte();
- m_pStream->offset(2);
- } else {
- pSegment->m_nResultType = JBIG2_IMAGE_POINTER;
- pSegment->m_Result.im =
- pTRD->decode_Huffman(m_pStream.get(), grContext.get());
- if (!pSegment->m_Result.im)
- return JBIG2_ERROR_FATAL;
- m_pStream->alignByte();
- }
- if (pSegment->m_cFlags.s.type != 4) {
- if (!m_bBufSpecified) {
- JBig2PageInfo* pPageInfo = m_PageInfoList.back();
- if ((pPageInfo->m_bIsStriped == 1) &&
- (ri.y + ri.height > m_pPage->m_nHeight)) {
- m_pPage->expand(ri.y + ri.height, (pPageInfo->m_cFlags & 4) ? 1 : 0);
- }
- }
- m_pPage->composeFrom(ri.x, ri.y, pSegment->m_Result.im,
- (JBig2ComposeOp)(ri.flags & 0x03));
- delete pSegment->m_Result.im;
- pSegment->m_Result.im = NULL;
- }
- return JBIG2_SUCCESS;
-}
-
-int32_t CJBig2_Context::parsePatternDict(CJBig2_Segment* pSegment,
- IFX_Pause* pPause) {
- uint8_t cFlags;
- std::unique_ptr<CJBig2_PDDProc> pPDD(new CJBig2_PDDProc);
- if (m_pStream->read1Byte(&cFlags) != 0 ||
- m_pStream->read1Byte(&pPDD->HDPW) != 0 ||
- m_pStream->read1Byte(&pPDD->HDPH) != 0 ||
- m_pStream->readInteger(&pPDD->GRAYMAX) != 0) {
- return JBIG2_ERROR_TOO_SHORT;
- }
- if (pPDD->GRAYMAX > JBIG2_MAX_PATTERN_INDEX)
- return JBIG2_ERROR_LIMIT;
-
- pPDD->HDMMR = cFlags & 0x01;
- pPDD->HDTEMPLATE = (cFlags >> 1) & 0x03;
- pSegment->m_nResultType = JBIG2_PATTERN_DICT_POINTER;
- if (pPDD->HDMMR == 0) {
- const size_t size = GetHuffContextSize(pPDD->HDTEMPLATE);
- std::unique_ptr<JBig2ArithCtx, FxFreeDeleter> gbContext(
- FX_Alloc(JBig2ArithCtx, size));
- JBIG2_memset(gbContext.get(), 0, sizeof(JBig2ArithCtx) * size);
- std::unique_ptr<CJBig2_ArithDecoder> pArithDecoder(
- new CJBig2_ArithDecoder(m_pStream.get()));
- pSegment->m_Result.pd =
- pPDD->decode_Arith(pArithDecoder.get(), gbContext.get(), pPause);
- if (!pSegment->m_Result.pd)
- return JBIG2_ERROR_FATAL;
-
- m_pStream->alignByte();
- m_pStream->offset(2);
- } else {
- pSegment->m_Result.pd = pPDD->decode_MMR(m_pStream.get(), pPause);
- if (!pSegment->m_Result.pd)
- return JBIG2_ERROR_FATAL;
- m_pStream->alignByte();
- }
- return JBIG2_SUCCESS;
-}
-
-int32_t CJBig2_Context::parseHalftoneRegion(CJBig2_Segment* pSegment,
- IFX_Pause* pPause) {
- uint8_t cFlags;
- JBig2RegionInfo ri;
- std::unique_ptr<CJBig2_HTRDProc> pHRD(new CJBig2_HTRDProc);
- if (parseRegionInfo(&ri) != JBIG2_SUCCESS ||
- m_pStream->read1Byte(&cFlags) != 0 ||
- m_pStream->readInteger(&pHRD->HGW) != 0 ||
- m_pStream->readInteger(&pHRD->HGH) != 0 ||
- m_pStream->readInteger((FX_DWORD*)&pHRD->HGX) != 0 ||
- m_pStream->readInteger((FX_DWORD*)&pHRD->HGY) != 0 ||
- m_pStream->readShortInteger(&pHRD->HRX) != 0 ||
- m_pStream->readShortInteger(&pHRD->HRY) != 0) {
- return JBIG2_ERROR_TOO_SHORT;
- }
-
- if (pHRD->HGW == 0 || pHRD->HGH == 0)
- return JBIG2_ERROR_FATAL;
-
- pHRD->HBW = ri.width;
- pHRD->HBH = ri.height;
- pHRD->HMMR = cFlags & 0x01;
- pHRD->HTEMPLATE = (cFlags >> 1) & 0x03;
- pHRD->HENABLESKIP = (cFlags >> 3) & 0x01;
- pHRD->HCOMBOP = (JBig2ComposeOp)((cFlags >> 4) & 0x07);
- pHRD->HDEFPIXEL = (cFlags >> 7) & 0x01;
- if (pSegment->m_nReferred_to_segment_count != 1)
- return JBIG2_ERROR_FATAL;
-
- CJBig2_Segment* pSeg =
- findSegmentByNumber(pSegment->m_pReferred_to_segment_numbers[0]);
- if (!pSeg || (pSeg->m_cFlags.s.type != 16))
- return JBIG2_ERROR_FATAL;
-
- CJBig2_PatternDict* pPatternDict = pSeg->m_Result.pd;
- if (!pPatternDict || (pPatternDict->NUMPATS == 0))
- return JBIG2_ERROR_FATAL;
-
- pHRD->HNUMPATS = pPatternDict->NUMPATS;
- pHRD->HPATS = pPatternDict->HDPATS;
- pHRD->HPW = pPatternDict->HDPATS[0]->m_nWidth;
- pHRD->HPH = pPatternDict->HDPATS[0]->m_nHeight;
- pSegment->m_nResultType = JBIG2_IMAGE_POINTER;
- if (pHRD->HMMR == 0) {
- const size_t size = GetHuffContextSize(pHRD->HTEMPLATE);
- std::unique_ptr<JBig2ArithCtx, FxFreeDeleter> gbContext(
- FX_Alloc(JBig2ArithCtx, size));
- JBIG2_memset(gbContext.get(), 0, sizeof(JBig2ArithCtx) * size);
- std::unique_ptr<CJBig2_ArithDecoder> pArithDecoder(
- new CJBig2_ArithDecoder(m_pStream.get()));
- pSegment->m_Result.im =
- pHRD->decode_Arith(pArithDecoder.get(), gbContext.get(), pPause);
- if (!pSegment->m_Result.im)
- return JBIG2_ERROR_FATAL;
-
- m_pStream->alignByte();
- m_pStream->offset(2);
- } else {
- pSegment->m_Result.im = pHRD->decode_MMR(m_pStream.get(), pPause);
- if (!pSegment->m_Result.im)
- return JBIG2_ERROR_FATAL;
- m_pStream->alignByte();
- }
- if (pSegment->m_cFlags.s.type != 20) {
- if (!m_bBufSpecified) {
- JBig2PageInfo* pPageInfo = m_PageInfoList.back();
- if (pPageInfo->m_bIsStriped == 1 &&
- ri.y + ri.height > m_pPage->m_nHeight) {
- m_pPage->expand(ri.y + ri.height, (pPageInfo->m_cFlags & 4) ? 1 : 0);
- }
- }
- m_pPage->composeFrom(ri.x, ri.y, pSegment->m_Result.im,
- (JBig2ComposeOp)(ri.flags & 0x03));
- delete pSegment->m_Result.im;
- pSegment->m_Result.im = NULL;
- }
- return JBIG2_SUCCESS;
-}
-
-int32_t CJBig2_Context::parseGenericRegion(CJBig2_Segment* pSegment,
- IFX_Pause* pPause) {
- if (!m_pGRD) {
- std::unique_ptr<CJBig2_GRDProc> pGRD(new CJBig2_GRDProc);
- uint8_t cFlags;
- if (parseRegionInfo(&m_ri) != JBIG2_SUCCESS ||
- m_pStream->read1Byte(&cFlags) != 0) {
- return JBIG2_ERROR_TOO_SHORT;
- }
- if (m_ri.height < 0 || m_ri.width < 0)
- return JBIG2_FAILED;
-
- pGRD->GBW = m_ri.width;
- pGRD->GBH = m_ri.height;
- pGRD->MMR = cFlags & 0x01;
- pGRD->GBTEMPLATE = (cFlags >> 1) & 0x03;
- pGRD->TPGDON = (cFlags >> 3) & 0x01;
- if (pGRD->MMR == 0) {
- if (pGRD->GBTEMPLATE == 0) {
- for (int32_t i = 0; i < 8; ++i) {
- if (m_pStream->read1Byte((uint8_t*)&pGRD->GBAT[i]) != 0) {
- return JBIG2_ERROR_TOO_SHORT;
- }
- }
- } else {
- for (int32_t i = 0; i < 2; ++i) {
- if (m_pStream->read1Byte((uint8_t*)&pGRD->GBAT[i]) != 0) {
- return JBIG2_ERROR_TOO_SHORT;
- }
- }
- }
- }
- pGRD->USESKIP = 0;
- m_pGRD = std::move(pGRD);
- }
- pSegment->m_nResultType = JBIG2_IMAGE_POINTER;
- if (m_pGRD->MMR == 0) {
- if (!m_gbContext) {
- const size_t size = GetHuffContextSize(m_pGRD->GBTEMPLATE);
- m_gbContext = FX_Alloc(JBig2ArithCtx, size);
- JBIG2_memset(m_gbContext, 0, sizeof(JBig2ArithCtx) * size);
- }
- if (!m_pArithDecoder) {
- m_pArithDecoder.reset(new CJBig2_ArithDecoder(m_pStream.get()));
- m_ProcessingStatus = m_pGRD->Start_decode_Arith(
- &pSegment->m_Result.im, m_pArithDecoder.get(), m_gbContext, pPause);
- } else {
- m_ProcessingStatus = m_pGRD->Continue_decode(pPause);
- }
- if (m_ProcessingStatus == FXCODEC_STATUS_DECODE_TOBECONTINUE) {
- if (pSegment->m_cFlags.s.type != 36) {
- if (!m_bBufSpecified) {
- JBig2PageInfo* pPageInfo = m_PageInfoList.back();
- if ((pPageInfo->m_bIsStriped == 1) &&
- (m_ri.y + m_ri.height > m_pPage->m_nHeight)) {
- m_pPage->expand(m_ri.y + m_ri.height,
- (pPageInfo->m_cFlags & 4) ? 1 : 0);
- }
- }
- FX_RECT Rect = m_pGRD->GetReplaceRect();
- m_pPage->composeFrom(m_ri.x + Rect.left, m_ri.y + Rect.top,
- pSegment->m_Result.im,
- (JBig2ComposeOp)(m_ri.flags & 0x03), &Rect);
- }
- return JBIG2_SUCCESS;
- } else {
- m_pArithDecoder.reset();
- FX_Free(m_gbContext);
- m_gbContext = NULL;
- if (!pSegment->m_Result.im) {
- m_ProcessingStatus = FXCODEC_STATUS_ERROR;
- m_pGRD.reset();
- return JBIG2_ERROR_FATAL;
- }
- m_pStream->alignByte();
- m_pStream->offset(2);
- }
- } else {
- FXCODEC_STATUS status = m_pGRD->Start_decode_MMR(&pSegment->m_Result.im,
- m_pStream.get(), pPause);
- while (status == FXCODEC_STATUS_DECODE_TOBECONTINUE) {
- m_pGRD->Continue_decode(pPause);
- }
- if (!pSegment->m_Result.im) {
- m_pGRD.reset();
- return JBIG2_ERROR_FATAL;
- }
- m_pStream->alignByte();
- }
- if (pSegment->m_cFlags.s.type != 36) {
- if (!m_bBufSpecified) {
- JBig2PageInfo* pPageInfo = m_PageInfoList.back();
- if ((pPageInfo->m_bIsStriped == 1) &&
- (m_ri.y + m_ri.height > m_pPage->m_nHeight)) {
- m_pPage->expand(m_ri.y + m_ri.height,
- (pPageInfo->m_cFlags & 4) ? 1 : 0);
- }
- }
- FX_RECT Rect = m_pGRD->GetReplaceRect();
- m_pPage->composeFrom(m_ri.x + Rect.left, m_ri.y + Rect.top,
- pSegment->m_Result.im,
- (JBig2ComposeOp)(m_ri.flags & 0x03), &Rect);
- delete pSegment->m_Result.im;
- pSegment->m_Result.im = NULL;
- }
- m_pGRD.reset();
- return JBIG2_SUCCESS;
-}
-
-int32_t CJBig2_Context::parseGenericRefinementRegion(CJBig2_Segment* pSegment) {
- JBig2RegionInfo ri;
- uint8_t cFlags;
- if (parseRegionInfo(&ri) != JBIG2_SUCCESS ||
- m_pStream->read1Byte(&cFlags) != 0) {
- return JBIG2_ERROR_TOO_SHORT;
- }
- std::unique_ptr<CJBig2_GRRDProc> pGRRD(new CJBig2_GRRDProc);
- pGRRD->GRW = ri.width;
- pGRRD->GRH = ri.height;
- pGRRD->GRTEMPLATE = cFlags & 0x01;
- pGRRD->TPGRON = (cFlags >> 1) & 0x01;
- if (pGRRD->GRTEMPLATE == 0) {
- for (int32_t i = 0; i < 4; ++i) {
- if (m_pStream->read1Byte((uint8_t*)&pGRRD->GRAT[i]) != 0)
- return JBIG2_ERROR_TOO_SHORT;
- }
- }
- CJBig2_Segment* pSeg = nullptr;
- if (pSegment->m_nReferred_to_segment_count > 0) {
- int32_t i;
- for (i = 0; i < pSegment->m_nReferred_to_segment_count; ++i) {
- pSeg = findSegmentByNumber(pSegment->m_pReferred_to_segment_numbers[0]);
- if (!pSeg)
- return JBIG2_ERROR_FATAL;
-
- if (pSeg->m_cFlags.s.type == 4 || pSeg->m_cFlags.s.type == 20 ||
- pSeg->m_cFlags.s.type == 36 || pSeg->m_cFlags.s.type == 40) {
- break;
- }
- }
- if (i >= pSegment->m_nReferred_to_segment_count)
- return JBIG2_ERROR_FATAL;
-
- pGRRD->GRREFERENCE = pSeg->m_Result.im;
- } else {
- pGRRD->GRREFERENCE = m_pPage.get();
- }
- pGRRD->GRREFERENCEDX = 0;
- pGRRD->GRREFERENCEDY = 0;
- const size_t size = GetRefAggContextSize(pGRRD->GRTEMPLATE);
- std::unique_ptr<JBig2ArithCtx, FxFreeDeleter> grContext(
- FX_Alloc(JBig2ArithCtx, size));
- JBIG2_memset(grContext.get(), 0, sizeof(JBig2ArithCtx) * size);
- std::unique_ptr<CJBig2_ArithDecoder> pArithDecoder(
- new CJBig2_ArithDecoder(m_pStream.get()));
- pSegment->m_nResultType = JBIG2_IMAGE_POINTER;
- pSegment->m_Result.im = pGRRD->decode(pArithDecoder.get(), grContext.get());
- if (!pSegment->m_Result.im)
- return JBIG2_ERROR_FATAL;
-
- m_pStream->alignByte();
- m_pStream->offset(2);
- if (pSegment->m_cFlags.s.type != 40) {
- if (!m_bBufSpecified) {
- JBig2PageInfo* pPageInfo = m_PageInfoList.back();
- if ((pPageInfo->m_bIsStriped == 1) &&
- (ri.y + ri.height > m_pPage->m_nHeight)) {
- m_pPage->expand(ri.y + ri.height, (pPageInfo->m_cFlags & 4) ? 1 : 0);
- }
- }
- m_pPage->composeFrom(ri.x, ri.y, pSegment->m_Result.im,
- (JBig2ComposeOp)(ri.flags & 0x03));
- delete pSegment->m_Result.im;
- pSegment->m_Result.im = NULL;
- }
- return JBIG2_SUCCESS;
-}
-
-int32_t CJBig2_Context::parseTable(CJBig2_Segment* pSegment) {
- pSegment->m_nResultType = JBIG2_HUFFMAN_TABLE_POINTER;
- pSegment->m_Result.ht = nullptr;
- std::unique_ptr<CJBig2_HuffmanTable> pHuff(
- new CJBig2_HuffmanTable(m_pStream.get()));
- if (!pHuff->IsOK())
- return JBIG2_ERROR_FATAL;
-
- pSegment->m_Result.ht = pHuff.release();
- m_pStream->alignByte();
- return JBIG2_SUCCESS;
-}
-
-int32_t CJBig2_Context::parseRegionInfo(JBig2RegionInfo* pRI) {
- if (m_pStream->readInteger((FX_DWORD*)&pRI->width) != 0 ||
- m_pStream->readInteger((FX_DWORD*)&pRI->height) != 0 ||
- m_pStream->readInteger((FX_DWORD*)&pRI->x) != 0 ||
- m_pStream->readInteger((FX_DWORD*)&pRI->y) != 0 ||
- m_pStream->read1Byte(&pRI->flags) != 0) {
- return JBIG2_ERROR_TOO_SHORT;
- }
- return JBIG2_SUCCESS;
-}
-
-JBig2HuffmanCode* CJBig2_Context::decodeSymbolIDHuffmanTable(
- CJBig2_BitStream* pStream,
- FX_DWORD SBNUMSYMS) {
- const size_t kRunCodesSize = 35;
- int32_t runcodes[kRunCodesSize];
- int32_t runcodes_len[kRunCodesSize];
- for (int32_t i = 0; i < kRunCodesSize; ++i) {
- if (pStream->readNBits(4, &runcodes_len[i]) != 0)
- return nullptr;
- }
- huffman_assign_code(runcodes, runcodes_len, kRunCodesSize);
-
- std::unique_ptr<JBig2HuffmanCode, FxFreeDeleter> SBSYMCODES(
- FX_Alloc(JBig2HuffmanCode, SBNUMSYMS));
- int32_t run;
- int32_t i = 0;
- while (i < (int)SBNUMSYMS) {
- int32_t j;
- int32_t nVal = 0;
- int32_t nBits = 0;
- FX_DWORD nTemp;
- while (true) {
- if (pStream->read1Bit(&nTemp) != 0)
- return nullptr;
-
- nVal = (nVal << 1) | nTemp;
- ++nBits;
- for (j = 0; j < kRunCodesSize; ++j) {
- if (nBits == runcodes_len[j] && nVal == runcodes[j]) {
- break;
- }
- }
- if (j < kRunCodesSize) {
- break;
- }
- }
- int32_t runcode = j;
- if (runcode < 32) {
- SBSYMCODES.get()[i].codelen = runcode;
- run = 0;
- } else if (runcode == 32) {
- if (pStream->readNBits(2, &nTemp) != 0)
- return nullptr;
- run = nTemp + 3;
- } else if (runcode == 33) {
- if (pStream->readNBits(3, &nTemp) != 0)
- return nullptr;
- run = nTemp + 3;
- } else if (runcode == 34) {
- if (pStream->readNBits(7, &nTemp) != 0)
- return nullptr;
- run = nTemp + 11;
- }
- if (run > 0) {
- if (i + run > (int)SBNUMSYMS)
- return nullptr;
- for (j = 0; j < run; ++j) {
- if (runcode == 32 && i > 0) {
- SBSYMCODES.get()[i + j].codelen = SBSYMCODES.get()[i - 1].codelen;
- } else {
- SBSYMCODES.get()[i + j].codelen = 0;
- }
- }
- i += run;
- } else {
- ++i;
- }
- }
- huffman_assign_code(SBSYMCODES.get(), SBNUMSYMS);
- return SBSYMCODES.release();
-}
-
-void CJBig2_Context::huffman_assign_code(int* CODES, int* PREFLEN, int NTEMP) {
- // TODO(thestig) CJBig2_HuffmanTable::parseFromCodedBuffer() has similar code.
- int CURLEN, LENMAX, CURCODE, CURTEMP, i;
- int* LENCOUNT;
- int* FIRSTCODE;
- LENMAX = 0;
- for (i = 0; i < NTEMP; ++i) {
- if (PREFLEN[i] > LENMAX) {
- LENMAX = PREFLEN[i];
- }
- }
- LENCOUNT = FX_Alloc(int, LENMAX + 1);
- JBIG2_memset(LENCOUNT, 0, sizeof(int) * (LENMAX + 1));
- FIRSTCODE = FX_Alloc(int, LENMAX + 1);
- for (i = 0; i < NTEMP; ++i) {
- ++LENCOUNT[PREFLEN[i]];
- }
- CURLEN = 1;
- FIRSTCODE[0] = 0;
- LENCOUNT[0] = 0;
- while (CURLEN <= LENMAX) {
- FIRSTCODE[CURLEN] = (FIRSTCODE[CURLEN - 1] + LENCOUNT[CURLEN - 1]) << 1;
- CURCODE = FIRSTCODE[CURLEN];
- CURTEMP = 0;
- while (CURTEMP < NTEMP) {
- if (PREFLEN[CURTEMP] == CURLEN) {
- CODES[CURTEMP] = CURCODE;
- CURCODE = CURCODE + 1;
- }
- CURTEMP = CURTEMP + 1;
- }
- CURLEN = CURLEN + 1;
- }
- FX_Free(LENCOUNT);
- FX_Free(FIRSTCODE);
-}
-void CJBig2_Context::huffman_assign_code(JBig2HuffmanCode* SBSYMCODES,
- int NTEMP) {
- int CURLEN, LENMAX, CURCODE, CURTEMP, i;
- int* LENCOUNT;
- int* FIRSTCODE;
- LENMAX = 0;
- for (i = 0; i < NTEMP; ++i) {
- if (SBSYMCODES[i].codelen > LENMAX) {
- LENMAX = SBSYMCODES[i].codelen;
- }
- }
- LENCOUNT = FX_Alloc(int, (LENMAX + 1));
- JBIG2_memset(LENCOUNT, 0, sizeof(int) * (LENMAX + 1));
- FIRSTCODE = FX_Alloc(int, (LENMAX + 1));
- for (i = 0; i < NTEMP; ++i) {
- ++LENCOUNT[SBSYMCODES[i].codelen];
- }
- CURLEN = 1;
- FIRSTCODE[0] = 0;
- LENCOUNT[0] = 0;
- while (CURLEN <= LENMAX) {
- FIRSTCODE[CURLEN] = (FIRSTCODE[CURLEN - 1] + LENCOUNT[CURLEN - 1]) << 1;
- CURCODE = FIRSTCODE[CURLEN];
- CURTEMP = 0;
- while (CURTEMP < NTEMP) {
- if (SBSYMCODES[CURTEMP].codelen == CURLEN) {
- SBSYMCODES[CURTEMP].code = CURCODE;
- CURCODE = CURCODE + 1;
- }
- CURTEMP = CURTEMP + 1;
- }
- CURLEN = CURLEN + 1;
- }
- FX_Free(LENCOUNT);
- FX_Free(FIRSTCODE);
-}
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