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1 // Copyright 2014 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 XFA_SRC_FXBARCODE_ONED_BC_ONEDIMREADER_H_ | |
8 #define XFA_SRC_FXBARCODE_ONED_BC_ONEDIMREADER_H_ | |
9 | |
10 #include "core/include/fxcrt/fx_basic.h" | |
11 #include "xfa/src/fxbarcode/oned/BC_OneDReader.h" | |
12 | |
13 class CBC_CommonBitArray; | |
14 | |
15 class CBC_OneDimReader : public CBC_OneDReader { | |
16 private: | |
17 static const int32_t MAX_AVG_VARIANCE = (int32_t)(256 * 0.48f); | |
18 static const int32_t MAX_INDIVIDUAL_VARIANCE = (int32_t)(256 * 0.7f); | |
19 | |
20 FX_BOOL CheckStandardUPCEANChecksum(CFX_ByteString& s, int32_t& e); | |
21 | |
22 public: | |
23 static const int32_t START_END_PATTERN[3]; | |
24 static const int32_t MIDDLE_PATTERN[5]; | |
25 static const int32_t L_PATTERNS[10][4]; | |
26 static const int32_t L_AND_G_PATTERNS[20][4]; | |
27 | |
28 CBC_OneDimReader(); | |
29 virtual ~CBC_OneDimReader(); | |
30 | |
31 CFX_ByteString DecodeRow(int32_t rowNumber, | |
32 CBC_CommonBitArray* row, | |
33 int32_t hints, | |
34 int32_t& e); | |
35 CFX_ByteString DecodeRow(int32_t rowNumber, | |
36 CBC_CommonBitArray* row, | |
37 CFX_Int32Array* startGuardRange, | |
38 int32_t hints, | |
39 int32_t& e); | |
40 | |
41 protected: | |
42 CFX_Int32Array* FindStartGuardPattern(CBC_CommonBitArray* row, int32_t& e); | |
43 virtual FX_BOOL CheckChecksum(CFX_ByteString& s, int32_t& e); | |
44 CFX_Int32Array* FindGuardPattern(CBC_CommonBitArray* row, | |
45 int32_t rowOffset, | |
46 FX_BOOL whiteFirst, | |
47 CFX_Int32Array* pattern, | |
48 int32_t& e); | |
49 int32_t DecodeDigit(CBC_CommonBitArray* row, | |
50 CFX_Int32Array* counters, | |
51 int32_t rowOffset, | |
52 const int32_t* patterns, | |
53 int32_t patternLength, | |
54 int32_t& e); | |
55 virtual int32_t DecodeMiddle(CBC_CommonBitArray* row, | |
56 CFX_Int32Array* startRange, | |
57 CFX_ByteString& resultResult, | |
58 int32_t& e) { | |
59 return 0; | |
60 } | |
61 virtual CFX_Int32Array* DecodeEnd(CBC_CommonBitArray* row, | |
62 int32_t endStart, | |
63 int32_t& e); | |
64 }; | |
65 | |
66 #endif // XFA_SRC_FXBARCODE_ONED_BC_ONEDIMREADER_H_ | |
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