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// 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/include/fxcrt/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_
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