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1 // Copyright 2016 PDFium Authors. All rights reserved. | 1 // Copyright 2016 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 | 6 |
7 #ifndef CORE_FPDFAPI_PARSER_CPDF_HINT_TABLES_H_ | 7 #ifndef CORE_FPDFAPI_PARSER_CPDF_HINT_TABLES_H_ |
8 #define CORE_FPDFAPI_PARSER_CPDF_HINT_TABLES_H_ | 8 #define CORE_FPDFAPI_PARSER_CPDF_HINT_TABLES_H_ |
9 | 9 |
10 #include <vector> | 10 #include <vector> |
11 | 11 |
12 #include "core/fpdfapi/parser/cpdf_data_avail.h" | 12 #include "core/fpdfapi/parser/cpdf_data_avail.h" |
13 #include "core/fxcrt/fx_basic.h" | 13 #include "core/fxcrt/fx_basic.h" |
14 #include "core/fxcrt/fx_stream.h" | 14 #include "core/fxcrt/fx_stream.h" |
15 | 15 |
16 class CFX_BitStream; | 16 class CFX_BitStream; |
17 class CPDF_Dictionary; | 17 class CPDF_Linearized; |
18 class CPDF_Stream; | 18 class CPDF_Stream; |
19 | 19 |
20 class CPDF_HintTables { | 20 class CPDF_HintTables { |
21 public: | 21 public: |
22 CPDF_HintTables(CPDF_DataAvail* pDataAvail, CPDF_Dictionary* pLinearized); | 22 CPDF_HintTables(CPDF_DataAvail* pDataAvail, CPDF_Linearized* pLinearized); |
23 virtual ~CPDF_HintTables(); | 23 virtual ~CPDF_HintTables(); |
24 | 24 |
25 bool GetPagePos(uint32_t index, | 25 bool GetPagePos(uint32_t index, |
26 FX_FILESIZE* szPageStartPos, | 26 FX_FILESIZE* szPageStartPos, |
27 FX_FILESIZE* szPageLength, | 27 FX_FILESIZE* szPageLength, |
28 uint32_t* dwObjNum); | 28 uint32_t* dwObjNum); |
29 | 29 |
30 CPDF_DataAvail::DocAvailStatus CheckPage( | 30 CPDF_DataAvail::DocAvailStatus CheckPage( |
31 uint32_t index, | 31 uint32_t index, |
32 CPDF_DataAvail::DownloadHints* pHints); | 32 CPDF_DataAvail::DownloadHints* pHints); |
33 | 33 |
34 bool LoadHintStream(CPDF_Stream* pHintStream); | 34 bool LoadHintStream(CPDF_Stream* pHintStream); |
35 | 35 |
36 protected: | 36 protected: |
37 bool ReadPageHintTable(CFX_BitStream* hStream); | 37 bool ReadPageHintTable(CFX_BitStream* hStream); |
38 bool ReadSharedObjHintTable(CFX_BitStream* hStream, uint32_t offset); | 38 bool ReadSharedObjHintTable(CFX_BitStream* hStream, uint32_t offset); |
39 | 39 |
40 private: | 40 private: |
41 // Tests can override. | 41 // Tests can override. |
42 virtual int GetEndOfFirstPageOffset() const; | 42 virtual int GetEndOfFirstPageOffset() const; |
43 virtual int GetNumberOfPages() const; | 43 virtual int GetNumberOfPages() const; |
44 virtual int GetFirstPageObjectNumber() const; | 44 virtual int GetFirstPageObjectNumber() const; |
45 virtual int GetFirstPageNumber() const; | 45 virtual int GetFirstPageNumber() const; |
46 virtual int ReadPrimaryHintStreamOffset() const; | 46 virtual int ReadPrimaryHintStreamOffset() const; |
47 virtual int ReadPrimaryHintStreamLength() const; | 47 virtual int ReadPrimaryHintStreamLength() const; |
48 | 48 |
49 // Helper for the ReadPrimaryHintStream methods above. | |
50 int ReadPrimaryHintStream(int index) const; | |
51 | |
52 uint32_t GetItemLength(uint32_t index, | 49 uint32_t GetItemLength(uint32_t index, |
53 const std::vector<FX_FILESIZE>& szArray); | 50 const std::vector<FX_FILESIZE>& szArray); |
54 | 51 |
55 // Owner, outlives this object. | 52 // Owner, outlives this object. |
56 CPDF_DataAvail* const m_pDataAvail; | 53 CPDF_DataAvail* const m_pDataAvail; |
57 | 54 |
58 // Owned by |m_pDataAvail|. | 55 // Owned by |m_pDataAvail|. |
59 CPDF_Dictionary* const m_pLinearizedDict; | 56 CPDF_Linearized* const m_pLinearized; |
60 | 57 |
61 uint32_t m_nFirstPageSharedObjs; | 58 uint32_t m_nFirstPageSharedObjs; |
62 FX_FILESIZE m_szFirstPageObjOffset; | 59 FX_FILESIZE m_szFirstPageObjOffset; |
63 std::vector<uint32_t> m_dwDeltaNObjsArray; | 60 std::vector<uint32_t> m_dwDeltaNObjsArray; |
64 std::vector<uint32_t> m_dwNSharedObjsArray; | 61 std::vector<uint32_t> m_dwNSharedObjsArray; |
65 std::vector<uint32_t> m_dwSharedObjNumArray; | 62 std::vector<uint32_t> m_dwSharedObjNumArray; |
66 std::vector<uint32_t> m_dwIdentifierArray; | 63 std::vector<uint32_t> m_dwIdentifierArray; |
67 std::vector<FX_FILESIZE> m_szPageOffsetArray; | 64 std::vector<FX_FILESIZE> m_szPageOffsetArray; |
68 std::vector<FX_FILESIZE> m_szSharedObjOffsetArray; | 65 std::vector<FX_FILESIZE> m_szSharedObjOffsetArray; |
69 }; | 66 }; |
70 | 67 |
71 #endif // CORE_FPDFAPI_PARSER_CPDF_HINT_TABLES_H_ | 68 #endif // CORE_FPDFAPI_PARSER_CPDF_HINT_TABLES_H_ |
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