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| 1 // Copyright 2014 PDFium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | |
| 6 | |
| 7 #ifndef CORE_SRC_FXCODEC_JBIG2_JBIG2_CONTEXT_H_ | |
| 8 #define CORE_SRC_FXCODEC_JBIG2_JBIG2_CONTEXT_H_ | |
| 9 | |
| 10 #include <list> | |
| 11 #include <memory> | |
| 12 #include <utility> | |
| 13 | |
| 14 #include "core/include/fpdfapi/cpdf_object.h" | |
| 15 #include "core/include/fxcodec/fx_codec_def.h" | |
| 16 #include "core/src/fxcodec/jbig2/JBig2_List.h" | |
| 17 #include "core/src/fxcodec/jbig2/JBig2_Page.h" | |
| 18 #include "core/src/fxcodec/jbig2/JBig2_Segment.h" | |
| 19 | |
| 20 class CJBig2_ArithDecoder; | |
| 21 class CJBig2_GRDProc; | |
| 22 class CPDF_StreamAcc; | |
| 23 class IFX_Pause; | |
| 24 | |
| 25 // Cache is keyed by the ObjNum of a stream and an index within the stream. | |
| 26 using CJBig2_CacheKey = std::pair<FX_DWORD, FX_DWORD>; | |
| 27 // NB: CJBig2_SymbolDict* is owned. | |
| 28 using CJBig2_CachePair = std::pair<CJBig2_CacheKey, CJBig2_SymbolDict*>; | |
| 29 | |
| 30 #define JBIG2_SUCCESS 0 | |
| 31 #define JBIG2_FAILED -1 | |
| 32 #define JBIG2_ERROR_TOO_SHORT -2 | |
| 33 #define JBIG2_ERROR_FATAL -3 | |
| 34 #define JBIG2_END_OF_PAGE 2 | |
| 35 #define JBIG2_END_OF_FILE 3 | |
| 36 #define JBIG2_ERROR_FILE_FORMAT -4 | |
| 37 #define JBIG2_ERROR_STREAM_TYPE -5 | |
| 38 #define JBIG2_ERROR_LIMIT -6 | |
| 39 #define JBIG2_MIN_SEGMENT_SIZE 11 | |
| 40 | |
| 41 class CJBig2_Context { | |
| 42 public: | |
| 43 static CJBig2_Context* CreateContext( | |
| 44 CPDF_StreamAcc* pGlobalStream, | |
| 45 CPDF_StreamAcc* pSrcStream, | |
| 46 std::list<CJBig2_CachePair>* pSymbolDictCache, | |
| 47 IFX_Pause* pPause = NULL); | |
| 48 | |
| 49 static void DestroyContext(CJBig2_Context* pContext); | |
| 50 | |
| 51 int32_t getFirstPage(uint8_t* pBuf, | |
| 52 int32_t width, | |
| 53 int32_t height, | |
| 54 int32_t stride, | |
| 55 IFX_Pause* pPause); | |
| 56 | |
| 57 int32_t Continue(IFX_Pause* pPause); | |
| 58 FXCODEC_STATUS GetProcessingStatus() { return m_ProcessingStatus; } | |
| 59 | |
| 60 private: | |
| 61 CJBig2_Context(CPDF_StreamAcc* pGlobalStream, | |
| 62 CPDF_StreamAcc* pSrcStream, | |
| 63 std::list<CJBig2_CachePair>* pSymbolDictCache, | |
| 64 IFX_Pause* pPause, | |
| 65 bool bIsGlobal); | |
| 66 | |
| 67 ~CJBig2_Context(); | |
| 68 | |
| 69 int32_t decode_SquentialOrgnazation(IFX_Pause* pPause); | |
| 70 | |
| 71 int32_t decode_EmbedOrgnazation(IFX_Pause* pPause); | |
| 72 | |
| 73 int32_t decode_RandomOrgnazation_FirstPage(IFX_Pause* pPause); | |
| 74 | |
| 75 int32_t decode_RandomOrgnazation(IFX_Pause* pPause); | |
| 76 | |
| 77 CJBig2_Segment* findSegmentByNumber(FX_DWORD dwNumber); | |
| 78 | |
| 79 CJBig2_Segment* findReferredSegmentByTypeAndIndex(CJBig2_Segment* pSegment, | |
| 80 uint8_t cType, | |
| 81 int32_t nIndex); | |
| 82 | |
| 83 int32_t parseSegmentHeader(CJBig2_Segment* pSegment); | |
| 84 | |
| 85 int32_t parseSegmentData(CJBig2_Segment* pSegment, IFX_Pause* pPause); | |
| 86 int32_t ProcessingParseSegmentData(CJBig2_Segment* pSegment, | |
| 87 IFX_Pause* pPause); | |
| 88 | |
| 89 int32_t parseSymbolDict(CJBig2_Segment* pSegment, IFX_Pause* pPause); | |
| 90 | |
| 91 int32_t parseTextRegion(CJBig2_Segment* pSegment); | |
| 92 | |
| 93 int32_t parsePatternDict(CJBig2_Segment* pSegment, IFX_Pause* pPause); | |
| 94 | |
| 95 int32_t parseHalftoneRegion(CJBig2_Segment* pSegment, IFX_Pause* pPause); | |
| 96 | |
| 97 int32_t parseGenericRegion(CJBig2_Segment* pSegment, IFX_Pause* pPause); | |
| 98 | |
| 99 int32_t parseGenericRefinementRegion(CJBig2_Segment* pSegment); | |
| 100 | |
| 101 int32_t parseTable(CJBig2_Segment* pSegment); | |
| 102 | |
| 103 int32_t parseRegionInfo(JBig2RegionInfo* pRI); | |
| 104 | |
| 105 JBig2HuffmanCode* decodeSymbolIDHuffmanTable(CJBig2_BitStream* pStream, | |
| 106 FX_DWORD SBNUMSYMS); | |
| 107 | |
| 108 void huffman_assign_code(int* CODES, int* PREFLEN, int NTEMP); | |
| 109 | |
| 110 void huffman_assign_code(JBig2HuffmanCode* SBSYMCODES, int NTEMP); | |
| 111 | |
| 112 private: | |
| 113 CJBig2_Context* m_pGlobalContext; | |
| 114 std::unique_ptr<CJBig2_BitStream> m_pStream; | |
| 115 CJBig2_List<CJBig2_Segment> m_SegmentList; | |
| 116 CJBig2_List<JBig2PageInfo> m_PageInfoList; | |
| 117 std::unique_ptr<CJBig2_Image> m_pPage; | |
| 118 size_t m_nSegmentDecoded; | |
| 119 bool m_bInPage; | |
| 120 bool m_bBufSpecified; | |
| 121 int32_t m_PauseStep; | |
| 122 IFX_Pause* m_pPause; | |
| 123 FXCODEC_STATUS m_ProcessingStatus; | |
| 124 std::unique_ptr<CJBig2_ArithDecoder> m_pArithDecoder; | |
| 125 std::unique_ptr<CJBig2_GRDProc> m_pGRD; | |
| 126 JBig2ArithCtx* m_gbContext; | |
| 127 std::unique_ptr<CJBig2_Segment> m_pSegment; | |
| 128 FX_DWORD m_dwOffset; | |
| 129 JBig2RegionInfo m_ri; | |
| 130 std::list<CJBig2_CachePair>* const m_pSymbolDictCache; | |
| 131 bool m_bIsGlobal; | |
| 132 }; | |
| 133 | |
| 134 #endif // CORE_SRC_FXCODEC_JBIG2_JBIG2_CONTEXT_H_ | |
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Chromium Code Reviews
Issue 1800523005:
Move core/src/ up to core/. (Closed)
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