// 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 | |
// Original code is licensed as follows: | |
/* | |
* Copyright 2008 ZXing authors | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); | |
* you may not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software | |
* distributed under the License is distributed on an "AS IS" BASIS, | |
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
* See the License for the specific language governing permissions and | |
* limitations under the License. | |
*/ | |
#include "xfa/src/fxbarcode/barcode.h" | |
#include "xfa/src/fxbarcode/BC_Reader.h" | |
#include "xfa/src/fxbarcode/common/BC_CommonBitArray.h" | |
#include "BC_OneDReader.h" | |
#include "BC_OneDimReader.h" | |
#include "BC_OnedEAN13Reader.h" | |
const int32_t CBC_OnedEAN13Reader::FIRST_DIGIT_ENCODINGS[10] = { | |
0x00, 0x0B, 0x0D, 0xE, 0x13, 0x19, 0x1C, 0x15, 0x16, 0x1A}; | |
CBC_OnedEAN13Reader::CBC_OnedEAN13Reader() {} | |
CBC_OnedEAN13Reader::~CBC_OnedEAN13Reader() {} | |
void CBC_OnedEAN13Reader::DetermineFirstDigit(CFX_ByteString& result, | |
int32_t lgPatternFound, | |
int32_t& e) { | |
for (int32_t d = 0; d < 10; d++) { | |
if (lgPatternFound == FIRST_DIGIT_ENCODINGS[d]) { | |
result.Insert(0, (FX_CHAR)('0' + d)); | |
return; | |
} | |
} | |
e = BCExceptionNotFound; | |
BC_EXCEPTION_CHECK_ReturnVoid(e); | |
} | |
int32_t CBC_OnedEAN13Reader::DecodeMiddle(CBC_CommonBitArray* row, | |
CFX_Int32Array* startRange, | |
CFX_ByteString& resultString, | |
int32_t& e) { | |
CFX_Int32Array counters; | |
counters.Add(0); | |
counters.Add(0); | |
counters.Add(0); | |
counters.Add(0); | |
int32_t end = row->GetSize(); | |
int32_t rowOffset = (*startRange)[1]; | |
int32_t lgPatternFound = 0; | |
for (int32_t x = 0; x < 6 && rowOffset < end; x++) { | |
int32_t bestMatch = | |
DecodeDigit(row, &counters, rowOffset, | |
&(CBC_OneDimReader::L_AND_G_PATTERNS[0][0]), 20, e); | |
BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
resultString += (FX_CHAR)('0' + bestMatch % 10); | |
for (int32_t i = 0; i < counters.GetSize(); i++) { | |
rowOffset += counters[i]; | |
} | |
if (bestMatch >= 10) { | |
lgPatternFound |= 1 << (5 - x); | |
} | |
} | |
DetermineFirstDigit(resultString, lgPatternFound, e); | |
BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
CFX_Int32Array result; | |
result.Add(CBC_OneDimReader::MIDDLE_PATTERN[0]); | |
result.Add(CBC_OneDimReader::MIDDLE_PATTERN[1]); | |
result.Add(CBC_OneDimReader::MIDDLE_PATTERN[2]); | |
result.Add(CBC_OneDimReader::MIDDLE_PATTERN[3]); | |
result.Add(CBC_OneDimReader::MIDDLE_PATTERN[4]); | |
CFX_Int32Array* middleRange = | |
FindGuardPattern(row, rowOffset, TRUE, &result, e); | |
BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
rowOffset = (*middleRange)[1]; | |
if (middleRange != NULL) { | |
delete middleRange; | |
middleRange = NULL; | |
} | |
for (int32_t Y = 0; Y < 6 && rowOffset < end; Y++) { | |
int32_t bestMatch = | |
DecodeDigit(row, &counters, rowOffset, | |
&(CBC_OneDimReader::L_PATTERNS[0][0]), 10, e); | |
BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
resultString += (FX_CHAR)('0' + bestMatch); | |
for (int32_t k = 0; k < counters.GetSize(); k++) { | |
rowOffset += counters[k]; | |
} | |
} | |
return rowOffset; | |
} |