1 // Copyright 2017 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_FPDFAPI_RENDER_CPDF_DIBSOURCE_H_ 8 #define CORE_FPDFAPI_RENDER_CPDF_DIBSOURCE_H_ 9 10 #include <map> 11 #include <memory> 12 #include <vector> 13 14 #include "core/fpdfapi/page/cpdf_clippath.h" 15 #include "core/fpdfapi/page/cpdf_countedobject.h" 16 #include "core/fpdfapi/page/cpdf_graphicstates.h" 17 #include "core/fpdfapi/parser/cpdf_stream_acc.h" 18 #include "core/fpdfapi/render/cpdf_imageloader.h" 19 #include "core/fpdfapi/render/cpdf_rendercontext.h" 20 #include "core/fpdfapi/render/cpdf_renderoptions.h" 21 #include "core/fxge/cfx_fxgedevice.h" 22 #include "core/fxge/cfx_renderdevice.h" 23 24 class CCodec_Jbig2Context; 25 class CCodec_ScanlineDecoder; 26 class CPDF_Color; 27 class CPDF_Dictionary; 28 class CPDF_Document; 29 class CPDF_Stream; 30 31 typedef struct { 32 FX_FLOAT m_DecodeMin; 33 FX_FLOAT m_DecodeStep; 34 int m_ColorKeyMin; 35 int m_ColorKeyMax; 36 } DIB_COMP_DATA; 37 38 #define FPDF_HUGE_IMAGE_SIZE 60000000 39 40 class CPDF_DIBSource : public CFX_DIBSource { 41 public: 42 CPDF_DIBSource(); 43 ~CPDF_DIBSource() override; 44 45 bool Load(CPDF_Document* pDoc, const CPDF_Stream* pStream); 46 47 // CFX_DIBSource 48 bool SkipToScanline(int line, IFX_Pause* pPause) const override; 49 uint8_t* GetBuffer() const override; 50 const uint8_t* GetScanline(int line) const override; 51 void DownSampleScanline(int line, 52 uint8_t* dest_scan, 53 int dest_bpp, 54 int dest_width, 55 bool bFlipX, 56 int clip_left, 57 int clip_width) const override; 58 59 uint32_t GetMatteColor() const { return m_MatteColor; } 60 61 int StartLoadDIBSource(CPDF_Document* pDoc, 62 const CPDF_Stream* pStream, 63 bool bHasMask, 64 CPDF_Dictionary* pFormResources, 65 CPDF_Dictionary* pPageResources, 66 bool bStdCS = false, 67 uint32_t GroupFamily = 0, 68 bool bLoadMask = false); 69 int ContinueLoadDIBSource(IFX_Pause* pPause); 70 int StratLoadMask(); 71 int StartLoadMaskDIB(); 72 int ContinueLoadMaskDIB(IFX_Pause* pPause); 73 int ContinueToLoadMask(); 74 CPDF_DIBSource* DetachMask(); 75 76 private: 77 bool LoadColorInfo(const CPDF_Dictionary* pFormResources, 78 const CPDF_Dictionary* pPageResources); 79 DIB_COMP_DATA* GetDecodeAndMaskArray(bool& bDefaultDecode, bool& bColorKey); 80 void LoadJpxBitmap(); 81 void LoadPalette(); 82 int CreateDecoder(); 83 void TranslateScanline24bpp(uint8_t* dest_scan, 84 const uint8_t* src_scan) const; 85 void ValidateDictParam(); 86 void DownSampleScanline1Bit(int orig_Bpp, 87 int dest_Bpp, 88 uint32_t src_width, 89 const uint8_t* pSrcLine, 90 uint8_t* dest_scan, 91 int dest_width, 92 bool bFlipX, 93 int clip_left, 94 int clip_width) const; 95 void DownSampleScanline8Bit(int orig_Bpp, 96 int dest_Bpp, 97 uint32_t src_width, 98 const uint8_t* pSrcLine, 99 uint8_t* dest_scan, 100 int dest_width, 101 bool bFlipX, 102 int clip_left, 103 int clip_width) const; 104 void DownSampleScanline32Bit(int orig_Bpp, 105 int dest_Bpp, 106 uint32_t src_width, 107 const uint8_t* pSrcLine, 108 uint8_t* dest_scan, 109 int dest_width, 110 bool bFlipX, 111 int clip_left, 112 int clip_width) const; 113 bool TransMask() const; 114 115 CPDF_Document* m_pDocument; 116 const CPDF_Stream* m_pStream; 117 std::unique_ptr<CPDF_StreamAcc> m_pStreamAcc; 118 const CPDF_Dictionary* m_pDict; 119 CPDF_ColorSpace* m_pColorSpace; 120 uint32_t m_Family; 121 uint32_t m_bpc; 122 uint32_t m_bpc_orig; 123 uint32_t m_nComponents; 124 uint32_t m_GroupFamily; 125 uint32_t m_MatteColor; 126 bool m_bLoadMask; 127 bool m_bDefaultDecode; 128 bool m_bImageMask; 129 bool m_bDoBpcCheck; 130 bool m_bColorKey; 131 bool m_bHasMask; 132 bool m_bStdCS; 133 DIB_COMP_DATA* m_pCompData; 134 uint8_t* m_pLineBuf; 135 uint8_t* m_pMaskedLine; 136 std::unique_ptr<CFX_DIBitmap> m_pCachedBitmap; 137 std::unique_ptr<CCodec_ScanlineDecoder> m_pDecoder; 138 CPDF_DIBSource* m_pMask; 139 std::unique_ptr<CPDF_StreamAcc> m_pGlobalStream; 140 std::unique_ptr<CCodec_Jbig2Context> m_pJbig2Context; 141 CPDF_Stream* m_pMaskStream; 142 int m_Status; 143 }; 144 145 #endif // CORE_FPDFAPI_RENDER_CPDF_DIBSOURCE_H_ 146
