1 // Copyright 2015 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_FXCODEC_JBIG2_JBIG2_TRDPROC_H_ 8 #define CORE_FXCODEC_JBIG2_JBIG2_TRDPROC_H_ 9 10 #include <memory> 11 #include <vector> 12 13 #include "core/fxcodec/jbig2/JBig2_Image.h" 14 #include "core/fxcrt/fx_system.h" 15 #include "core/fxcrt/unowned_ptr.h" 16 17 class CJBig2_ArithDecoder; 18 class CJBig2_ArithIaidDecoder; 19 class CJBig2_ArithIntDecoder; 20 class CJBig2_BitStream; 21 class CJBig2_HuffmanTable; 22 class JBig2ArithCtx; 23 struct JBig2HuffmanCode; 24 25 struct JBig2IntDecoderState { 26 JBig2IntDecoderState(); 27 ~JBig2IntDecoderState(); 28 29 UnownedPtr<CJBig2_ArithIntDecoder> IADT; 30 UnownedPtr<CJBig2_ArithIntDecoder> IAFS; 31 UnownedPtr<CJBig2_ArithIntDecoder> IADS; 32 UnownedPtr<CJBig2_ArithIntDecoder> IAIT; 33 UnownedPtr<CJBig2_ArithIntDecoder> IARI; 34 UnownedPtr<CJBig2_ArithIntDecoder> IARDW; 35 UnownedPtr<CJBig2_ArithIntDecoder> IARDH; 36 UnownedPtr<CJBig2_ArithIntDecoder> IARDX; 37 UnownedPtr<CJBig2_ArithIntDecoder> IARDY; 38 UnownedPtr<CJBig2_ArithIaidDecoder> IAID; 39 }; 40 41 enum JBig2Corner { 42 JBIG2_CORNER_BOTTOMLEFT = 0, 43 JBIG2_CORNER_TOPLEFT = 1, 44 JBIG2_CORNER_BOTTOMRIGHT = 2, 45 JBIG2_CORNER_TOPRIGHT = 3 46 }; 47 48 class CJBig2_TRDProc { 49 public: 50 CJBig2_TRDProc(); 51 ~CJBig2_TRDProc(); 52 53 std::unique_ptr<CJBig2_Image> DecodeHuffman(CJBig2_BitStream* pStream, 54 JBig2ArithCtx* grContext); 55 56 std::unique_ptr<CJBig2_Image> DecodeArith(CJBig2_ArithDecoder* pArithDecoder, 57 JBig2ArithCtx* grContext, 58 JBig2IntDecoderState* pIDS); 59 60 bool SBHUFF; 61 bool SBREFINE; 62 bool SBRTEMPLATE; 63 bool TRANSPOSED; 64 bool SBDEFPIXEL; 65 int8_t SBDSOFFSET; 66 uint8_t SBSYMCODELEN; 67 uint32_t SBW; 68 uint32_t SBH; 69 uint32_t SBNUMINSTANCES; 70 uint32_t SBSTRIPS; 71 uint32_t SBNUMSYMS; 72 std::vector<JBig2HuffmanCode> SBSYMCODES; 73 CJBig2_Image** SBSYMS; 74 JBig2ComposeOp SBCOMBOP; 75 JBig2Corner REFCORNER; 76 UnownedPtr<const CJBig2_HuffmanTable> SBHUFFFS; 77 UnownedPtr<const CJBig2_HuffmanTable> SBHUFFDS; 78 UnownedPtr<const CJBig2_HuffmanTable> SBHUFFDT; 79 UnownedPtr<const CJBig2_HuffmanTable> SBHUFFRDW; 80 UnownedPtr<const CJBig2_HuffmanTable> SBHUFFRDH; 81 UnownedPtr<const CJBig2_HuffmanTable> SBHUFFRDX; 82 UnownedPtr<const CJBig2_HuffmanTable> SBHUFFRDY; 83 UnownedPtr<const CJBig2_HuffmanTable> SBHUFFRSIZE; 84 int8_t SBRAT[4]; 85 86 private: 87 struct ComposeData { 88 int32_t x; 89 int32_t y; 90 uint32_t increment = 0; 91 }; 92 ComposeData GetComposeData(int32_t SI, 93 int32_t TI, 94 uint32_t WI, 95 uint32_t HI) const; 96 }; 97 98 #endif // CORE_FXCODEC_JBIG2_JBIG2_TRDPROC_H_ 99