diff options
Diffstat (limited to 'core/src/fpdfapi/fpdf_parser/filters_int.h')
| -rw-r--r-- | core/src/fpdfapi/fpdf_parser/filters_int.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/core/src/fpdfapi/fpdf_parser/filters_int.h b/core/src/fpdfapi/fpdf_parser/filters_int.h new file mode 100644 index 0000000000..fa7d7db76e --- /dev/null +++ b/core/src/fpdfapi/fpdf_parser/filters_int.h @@ -0,0 +1,119 @@ +// 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
+
+class CPDF_DecryptFilter : public CFX_DataFilter
+{
+public:
+ CPDF_DecryptFilter(CPDF_CryptoHandler* pCryptoHandler, FX_DWORD objnum, FX_DWORD gennum);
+ virtual ~CPDF_DecryptFilter();
+ virtual void v_FilterIn(FX_LPCBYTE src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf);
+ virtual void v_FilterFinish(CFX_BinaryBuf& dest_buf);
+ CPDF_CryptoHandler* m_pCryptoHandler;
+ FX_LPVOID m_pContext;
+ FX_DWORD m_ObjNum, m_GenNum;
+};
+class CPDF_FlateFilter : public CFX_DataFilter
+{
+public:
+ CPDF_FlateFilter();
+ virtual ~CPDF_FlateFilter();
+ virtual void v_FilterIn(FX_LPCBYTE src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf);
+ virtual void v_FilterFinish(CFX_BinaryBuf& dest_buf) {}
+ void* m_pContext;
+ FX_BYTE m_DestBuffer[FPDF_FILTER_BUFFER_SIZE];
+};
+class CPDF_LzwFilter : public CFX_DataFilter
+{
+public:
+ CPDF_LzwFilter(FX_BOOL bEarlyChange);
+ virtual ~CPDF_LzwFilter() {}
+ virtual void v_FilterIn(FX_LPCBYTE src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf);
+ virtual void v_FilterFinish(CFX_BinaryBuf& dest_buf) {}
+ FX_BOOL m_bEarlyChange;
+ FX_DWORD m_CodeArray[5021];
+ FX_DWORD m_nCodes;
+ FX_DWORD m_CodeLen;
+ FX_DWORD m_OldCode;
+ FX_BYTE m_LastChar;
+ FX_DWORD m_nLeftBits, m_LeftBits;
+ FX_BYTE m_DecodeStack[4000];
+ FX_DWORD m_StackLen;
+ void AddCode(FX_DWORD prefix_code, FX_BYTE append_char);
+ void DecodeString(FX_DWORD code);
+};
+class CPDF_PredictorFilter : public CFX_DataFilter
+{
+public:
+ CPDF_PredictorFilter(int predictor, int colors, int bpc, int cols);
+ virtual ~CPDF_PredictorFilter();
+ virtual void v_FilterIn(FX_LPCBYTE src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf);
+ virtual void v_FilterFinish(CFX_BinaryBuf& dest_buf) {}
+ FX_BOOL m_bTiff;
+ FX_DWORD m_Pitch, m_Bpp;
+ FX_LPBYTE m_pRefLine, m_pCurLine;
+ FX_DWORD m_iLine, m_LineInSize;
+};
+class CPDF_AsciiHexFilter : public CFX_DataFilter
+{
+public:
+ CPDF_AsciiHexFilter();
+ virtual ~CPDF_AsciiHexFilter() {}
+ virtual void v_FilterIn(FX_LPCBYTE src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf);
+ virtual void v_FilterFinish(CFX_BinaryBuf& dest_buf) {}
+ int m_State;
+ int m_FirstDigit;
+};
+class CPDF_Ascii85Filter : public CFX_DataFilter
+{
+public:
+ CPDF_Ascii85Filter();
+ virtual ~CPDF_Ascii85Filter() {}
+ virtual void v_FilterIn(FX_LPCBYTE src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf);
+ virtual void v_FilterFinish(CFX_BinaryBuf& dest_buf) {}
+ int m_State;
+ int m_CharCount;
+ FX_DWORD m_CurDWord;
+};
+class CPDF_RunLenFilter : public CFX_DataFilter
+{
+public:
+ CPDF_RunLenFilter();
+ virtual ~CPDF_RunLenFilter() {}
+ virtual void v_FilterIn(FX_LPCBYTE src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf);
+ virtual void v_FilterFinish(CFX_BinaryBuf& dest_buf) {}
+ int m_State;
+ FX_DWORD m_Count;
+};
+class CPDF_JpegFilter : public CFX_DataFilter
+{
+public:
+ CPDF_JpegFilter();
+ virtual ~CPDF_JpegFilter();
+ virtual void v_FilterIn(FX_LPCBYTE src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf);
+ virtual void v_FilterFinish(CFX_BinaryBuf& dest_buf) {}
+ void* m_pContext;
+ CFX_BinaryBuf m_InputBuf;
+ FX_LPBYTE m_pScanline;
+ int m_Pitch, m_Height, m_Width, m_nComps, m_iLine;
+ FX_BOOL m_bGotHeader;
+};
+class CPDF_FaxFilter : public CFX_DataFilter
+{
+public:
+ CPDF_FaxFilter();
+ virtual ~CPDF_FaxFilter();
+ FX_BOOL Initialize(int Encoding, int bEndOfLine, int bByteAlign, int bBlack, int nRows, int nColumns);
+ virtual void v_FilterIn(FX_LPCBYTE src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf);
+ virtual void v_FilterFinish(CFX_BinaryBuf& dest_buf);
+ int m_Encoding, m_bEndOfLine, m_bByteAlign, m_bBlack;
+ int m_nRows, m_nColumns, m_Pitch, m_iRow;
+ FX_LPBYTE m_pScanlineBuf, m_pRefBuf;
+ CFX_BinaryBuf m_InputBuf;
+ int m_InputBitPos;
+ void ProcessData(FX_LPCBYTE src_buf, FX_DWORD src_size, int& bitpos, FX_BOOL bFinish,
+ CFX_BinaryBuf& dest_buf);
+ FX_BOOL ReadLine(FX_LPCBYTE src_buf, int bitsize, int& bitpos);
+};
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