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Side by Side Diff: core/src/fpdfapi/fpdf_parser/cpdf_hint_tables.h

Issue 1800523005: Move core/src/ up to core/. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: Created 4 years, 9 months ago
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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_SRC_FPDFAPI_FPDF_PARSER_CPDF_HINT_TABLES_H_
8 #define CORE_SRC_FPDFAPI_FPDF_PARSER_CPDF_HINT_TABLES_H_
9
10 #include <vector>
11
12 #include "core/include/fpdfapi/ipdf_data_avail.h"
13 #include "core/include/fxcrt/fx_basic.h"
14 #include "core/include/fxcrt/fx_stream.h"
15
16 class CFX_BitStream;
17 class CPDF_DataAvail;
18 class CPDF_Dictionary;
19 class CPDF_Stream;
20
21 class CPDF_HintTables {
22 public:
23 CPDF_HintTables(CPDF_DataAvail* pDataAvail, CPDF_Dictionary* pLinearized)
24 : m_pLinearizedDict(pLinearized),
25 m_pDataAvail(pDataAvail),
26 m_nFirstPageSharedObjs(0),
27 m_szFirstPageObjOffset(0) {}
28 ~CPDF_HintTables();
29
30 FX_BOOL GetPagePos(int index,
31 FX_FILESIZE& szPageStartPos,
32 FX_FILESIZE& szPageLength,
33 FX_DWORD& dwObjNum);
34
35 IPDF_DataAvail::DocAvailStatus CheckPage(
36 int index,
37 IPDF_DataAvail::DownloadHints* pHints);
38
39 FX_BOOL LoadHintStream(CPDF_Stream* pHintStream);
40
41 protected:
42 FX_BOOL ReadPageHintTable(CFX_BitStream* hStream);
43 FX_BOOL ReadSharedObjHintTable(CFX_BitStream* hStream, FX_DWORD offset);
44 FX_DWORD GetItemLength(int index, const std::vector<FX_FILESIZE>& szArray);
45
46 private:
47 int ReadPrimaryHintStreamOffset() const;
48 int ReadPrimaryHintStreamLength() const;
49
50 CPDF_Dictionary* m_pLinearizedDict;
51 CPDF_DataAvail* m_pDataAvail;
52 FX_DWORD m_nFirstPageSharedObjs;
53 FX_FILESIZE m_szFirstPageObjOffset;
54 CFX_DWordArray m_dwDeltaNObjsArray;
55 CFX_DWordArray m_dwNSharedObjsArray;
56 CFX_DWordArray m_dwSharedObjNumArray;
57 CFX_DWordArray m_dwIdentifierArray;
58 std::vector<FX_FILESIZE> m_szPageOffsetArray;
59 std::vector<FX_FILESIZE> m_szSharedObjOffsetArray;
60 };
61
62 #endif // CORE_SRC_FPDFAPI_FPDF_PARSER_CPDF_HINT_TABLES_H_
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