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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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