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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_object.h" | |
11 #include "core/include/fxcrt/fx_stream.h" | |
12 | |
13 class CPDF_Stream : public CPDF_Object { | |
14 public: | |
15 CPDF_Stream(uint8_t* pData, FX_DWORD size, CPDF_Dictionary* pDict); | |
16 | |
17 // CPDF_Object. | |
18 Type GetType() const override; | |
19 CPDF_Object* Clone(FX_BOOL bDirect = FALSE) const override; | |
20 CPDF_Dictionary* GetDict() const override; | |
21 CFX_WideString GetUnicodeText() const override; | |
22 bool IsStream() const override; | |
23 CPDF_Stream* AsStream() override; | |
24 const CPDF_Stream* AsStream() const override; | |
25 | |
26 FX_DWORD GetRawSize() const { return m_dwSize; } | |
27 uint8_t* GetRawData() const { return m_pDataBuf; } | |
28 | |
29 void SetData(const uint8_t* pData, | |
30 FX_DWORD size, | |
31 FX_BOOL bCompressed, | |
32 FX_BOOL bKeepBuf); | |
33 | |
34 void InitStream(uint8_t* pData, FX_DWORD size, CPDF_Dictionary* pDict); | |
35 void InitStreamFromFile(IFX_FileRead* pFile, CPDF_Dictionary* pDict); | |
36 | |
37 FX_BOOL ReadRawData(FX_FILESIZE start_pos, | |
38 uint8_t* pBuf, | |
39 FX_DWORD buf_size) const; | |
40 | |
41 bool IsMemoryBased() const { return m_GenNum == kMemoryBasedGenNum; } | |
42 | |
43 protected: | |
44 static const FX_DWORD kMemoryBasedGenNum = (FX_DWORD)-1; | |
45 | |
46 ~CPDF_Stream() override; | |
47 | |
48 void InitStreamInternal(CPDF_Dictionary* pDict); | |
49 | |
50 CPDF_Dictionary* m_pDict; | |
51 FX_DWORD m_dwSize; | |
52 FX_DWORD m_GenNum; | |
53 | |
54 union { | |
55 uint8_t* m_pDataBuf; | |
56 IFX_FileRead* m_pFile; | |
57 }; | |
58 }; | |
59 | |
60 inline CPDF_Stream* ToStream(CPDF_Object* obj) { | |
61 return obj ? obj->AsStream() : nullptr; | |
62 } | |
63 | |
64 inline const CPDF_Stream* ToStream(const CPDF_Object* obj) { | |
65 return obj ? obj->AsStream() : nullptr; | |
66 } | |
67 | |
68 class CPDF_StreamAcc { | |
dsinclair
2016/03/10 21:23:44
Move to its own file?
Tom Sepez
2016/03/10 22:05:19
I think that long-term this is becomes a CPDF_Stre
| |
69 public: | |
70 CPDF_StreamAcc(); | |
71 ~CPDF_StreamAcc(); | |
72 | |
73 void LoadAllData(const CPDF_Stream* pStream, | |
74 FX_BOOL bRawAccess = FALSE, | |
75 FX_DWORD estimated_size = 0, | |
76 FX_BOOL bImageAcc = FALSE); | |
77 | |
78 const CPDF_Stream* GetStream() const { return m_pStream; } | |
79 CPDF_Dictionary* GetDict() const { | |
80 return m_pStream ? m_pStream->GetDict() : nullptr; | |
81 } | |
82 const uint8_t* GetData() const; | |
83 FX_DWORD GetSize() const; | |
84 const CFX_ByteString& GetImageDecoder() const { return m_ImageDecoder; } | |
85 const CPDF_Dictionary* GetImageParam() const { return m_pImageParam; } | |
86 | |
87 uint8_t* DetachData(); | |
88 | |
89 protected: | |
90 uint8_t* m_pData; | |
91 FX_DWORD m_dwSize; | |
92 FX_BOOL m_bNewBuf; | |
93 CFX_ByteString m_ImageDecoder; | |
94 CPDF_Dictionary* m_pImageParam; | |
95 const CPDF_Stream* m_pStream; | |
96 uint8_t* m_pSrcData; | |
97 }; | |
98 | |
99 #endif // CORE_INCLUDE_FPDFAPI_CPDF_STREAM_H_ | |
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