1 // Copyright 2016 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_FPDF_PARSER_INCLUDE_CPDF_STREAM_H_ 8 #define CORE_FPDFAPI_FPDF_PARSER_INCLUDE_CPDF_STREAM_H_ 9 10 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h" 11 #include "core/fpdfapi/fpdf_parser/include/cpdf_object.h" 12 #include "core/fxcrt/include/fx_stream.h" 13 14 class CPDF_Stream : public CPDF_Object { 15 public: 16 CPDF_Stream(uint8_t* pData, uint32_t size, CPDF_Dictionary* pDict); 17 18 // CPDF_Object. 19 Type GetType() const override; 20 CPDF_Object* Clone(FX_BOOL bDirect = FALSE) const override; 21 CPDF_Dictionary* GetDict() const override; 22 CFX_WideString GetUnicodeText() const override; 23 bool IsStream() const override; 24 CPDF_Stream* AsStream() override; 25 const CPDF_Stream* AsStream() const override; 26 GetRawSize()27 uint32_t GetRawSize() const { return m_dwSize; } GetRawData()28 uint8_t* GetRawData() const { return m_pDataBuf; } 29 30 void SetData(const uint8_t* pData, 31 uint32_t size, 32 FX_BOOL bCompressed, 33 FX_BOOL bKeepBuf); 34 35 void InitStream(const uint8_t* pData, uint32_t size, CPDF_Dictionary* pDict); 36 void InitStreamFromFile(IFX_FileRead* pFile, CPDF_Dictionary* pDict); 37 38 FX_BOOL ReadRawData(FX_FILESIZE start_pos, 39 uint8_t* pBuf, 40 uint32_t buf_size) const; 41 IsMemoryBased()42 bool IsMemoryBased() const { return m_GenNum == kMemoryBasedGenNum; } 43 44 protected: 45 static const uint32_t kMemoryBasedGenNum = (uint32_t)-1; 46 47 ~CPDF_Stream() override; 48 49 void InitStreamInternal(CPDF_Dictionary* pDict); 50 51 CPDF_Dictionary* m_pDict; 52 uint32_t m_dwSize; 53 uint32_t m_GenNum; 54 55 union { 56 uint8_t* m_pDataBuf; 57 IFX_FileRead* m_pFile; 58 }; 59 }; 60 61 #endif // CORE_FPDFAPI_FPDF_PARSER_INCLUDE_CPDF_STREAM_H_ 62