blob: 84f48cf41f6dd256c75fe11e357b5f229f7c57a7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
// Copyright 2016 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#ifndef CORE_FPDFAPI_PARSER_CPDF_HINT_TABLES_H_
#define CORE_FPDFAPI_PARSER_CPDF_HINT_TABLES_H_
#include <vector>
#include "core/fpdfapi/parser/cpdf_data_avail.h"
#include "core/fxcrt/fx_basic.h"
#include "core/fxcrt/fx_stream.h"
class CFX_BitStream;
class CPDF_Dictionary;
class CPDF_Stream;
class CPDF_HintTables {
public:
CPDF_HintTables(CPDF_DataAvail* pDataAvail, CPDF_Dictionary* pLinearized);
virtual ~CPDF_HintTables();
bool GetPagePos(uint32_t index,
FX_FILESIZE* szPageStartPos,
FX_FILESIZE* szPageLength,
uint32_t* dwObjNum);
CPDF_DataAvail::DocAvailStatus CheckPage(
uint32_t index,
CPDF_DataAvail::DownloadHints* pHints);
bool LoadHintStream(CPDF_Stream* pHintStream);
protected:
bool ReadPageHintTable(CFX_BitStream* hStream);
bool ReadSharedObjHintTable(CFX_BitStream* hStream, uint32_t offset);
private:
// Tests can override.
virtual int GetEndOfFirstPageOffset() const;
virtual int GetNumberOfPages() const;
virtual int GetFirstPageObjectNumber() const;
virtual int GetFirstPageNumber() const;
virtual int ReadPrimaryHintStreamOffset() const;
virtual int ReadPrimaryHintStreamLength() const;
// Helper for the ReadPrimaryHintStream methods above.
int ReadPrimaryHintStream(int index) const;
uint32_t GetItemLength(uint32_t index,
const std::vector<FX_FILESIZE>& szArray);
// Owner, outlives this object.
CPDF_DataAvail* const m_pDataAvail;
// Owned by |m_pDataAvail|.
CPDF_Dictionary* const m_pLinearizedDict;
uint32_t m_nFirstPageSharedObjs;
FX_FILESIZE m_szFirstPageObjOffset;
std::vector<uint32_t> m_dwDeltaNObjsArray;
std::vector<uint32_t> m_dwNSharedObjsArray;
std::vector<uint32_t> m_dwSharedObjNumArray;
std::vector<uint32_t> m_dwIdentifierArray;
std::vector<FX_FILESIZE> m_szPageOffsetArray;
std::vector<FX_FILESIZE> m_szSharedObjOffsetArray;
};
#endif // CORE_FPDFAPI_PARSER_CPDF_HINT_TABLES_H_
|
