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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_INCLUDE_FPDFAPI_CPDF_STREAM_H_ | |
8 #define CORE_INCLUDE_FPDFAPI_CPDF_STREAM_H_ | |
9 | |
10 #include "core/include/fpdfapi/cpdf_dictionary.h" | |
11 #include "core/include/fpdfapi/cpdf_object.h" | |
12 #include "core/include/fxcrt/fx_stream.h" | |
13 | |
14 class CPDF_Stream : public CPDF_Object { | |
15 public: | |
16 CPDF_Stream(uint8_t* pData, FX_DWORD 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 | |
27 FX_DWORD GetRawSize() const { return m_dwSize; } | |
28 uint8_t* GetRawData() const { return m_pDataBuf; } | |
29 | |
30 void SetData(const uint8_t* pData, | |
31 FX_DWORD size, | |
32 FX_BOOL bCompressed, | |
33 FX_BOOL bKeepBuf); | |
34 | |
35 void InitStream(uint8_t* pData, FX_DWORD 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 FX_DWORD buf_size) const; | |
41 | |
42 bool IsMemoryBased() const { return m_GenNum == kMemoryBasedGenNum; } | |
43 | |
44 protected: | |
45 static const FX_DWORD kMemoryBasedGenNum = (FX_DWORD)-1; | |
46 | |
47 ~CPDF_Stream() override; | |
48 | |
49 void InitStreamInternal(CPDF_Dictionary* pDict); | |
50 | |
51 CPDF_Dictionary* m_pDict; | |
52 FX_DWORD m_dwSize; | |
53 FX_DWORD m_GenNum; | |
54 | |
55 union { | |
56 uint8_t* m_pDataBuf; | |
57 IFX_FileRead* m_pFile; | |
58 }; | |
59 }; | |
60 | |
61 #endif // CORE_INCLUDE_FPDFAPI_CPDF_STREAM_H_ | |
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