| // Copyright 2014 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 XFA_FXBARCODE_ONED_BC_ONEDIMREADER_H_ |
| #define XFA_FXBARCODE_ONED_BC_ONEDIMREADER_H_ |
| |
| #include "core/fxcrt/include/fx_basic.h" |
| #include "xfa/fxbarcode/oned/BC_OneDReader.h" |
| |
| class CBC_CommonBitArray; |
| |
| class CBC_OneDimReader : public CBC_OneDReader { |
| private: |
| static const int32_t MAX_AVG_VARIANCE = (int32_t)(256 * 0.48f); |
| static const int32_t MAX_INDIVIDUAL_VARIANCE = (int32_t)(256 * 0.7f); |
| |
| FX_BOOL CheckStandardUPCEANChecksum(CFX_ByteString& s, int32_t& e); |
| |
| public: |
| static const int32_t START_END_PATTERN[3]; |
| static const int32_t MIDDLE_PATTERN[5]; |
| static const int32_t L_PATTERNS[10][4]; |
| static const int32_t L_AND_G_PATTERNS[20][4]; |
| |
| CBC_OneDimReader(); |
| virtual ~CBC_OneDimReader(); |
| |
| CFX_ByteString DecodeRow(int32_t rowNumber, |
| CBC_CommonBitArray* row, |
| int32_t hints, |
| int32_t& e); |
| CFX_ByteString DecodeRow(int32_t rowNumber, |
| CBC_CommonBitArray* row, |
| CFX_Int32Array* startGuardRange, |
| int32_t hints, |
| int32_t& e); |
| |
| protected: |
| CFX_Int32Array* FindStartGuardPattern(CBC_CommonBitArray* row, int32_t& e); |
| virtual FX_BOOL CheckChecksum(CFX_ByteString& s, int32_t& e); |
| CFX_Int32Array* FindGuardPattern(CBC_CommonBitArray* row, |
| int32_t rowOffset, |
| FX_BOOL whiteFirst, |
| CFX_Int32Array* pattern, |
| int32_t& e); |
| int32_t DecodeDigit(CBC_CommonBitArray* row, |
| CFX_Int32Array* counters, |
| int32_t rowOffset, |
| const int32_t* patterns, |
| int32_t patternLength, |
| int32_t& e); |
| virtual int32_t DecodeMiddle(CBC_CommonBitArray* row, |
| CFX_Int32Array* startRange, |
| CFX_ByteString& resultResult, |
| int32_t& e) { |
| return 0; |
| } |
| virtual CFX_Int32Array* DecodeEnd(CBC_CommonBitArray* row, |
| int32_t endStart, |
| int32_t& e); |
| }; |
| |
| #endif // XFA_FXBARCODE_ONED_BC_ONEDIMREADER_H_ |