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// Original code is licensed as follows: 7/* 8 * Copyright 2008 ZXing authors 9 * 10 * Licensed under the Apache License, Version 2.0 (the "License"); 11 * you may not use this file except in compliance with the License. 12 * You may obtain a copy of the License at 13 * 14 * http://www.apache.org/licenses/LICENSE-2.0 15 * 16 * Unless required by applicable law or agreed to in writing, software 17 * distributed under the License is distributed on an "AS IS" BASIS, 18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 19 * See the License for the specific language governing permissions and 20 * limitations under the License. 21 */ 22 23#include "xfa/src/fxbarcode/barcode.h" 24#include "xfa/src/fxbarcode/BC_Reader.h" 25#include "xfa/src/fxbarcode/common/BC_CommonBitArray.h" 26#include "BC_OneDReader.h" 27#include "BC_OneDimReader.h" 28#include "BC_OnedEAN13Reader.h" 29const int32_t CBC_OnedEAN13Reader::FIRST_DIGIT_ENCODINGS[10] = { 30 0x00, 0x0B, 0x0D, 0xE, 0x13, 0x19, 0x1C, 0x15, 0x16, 0x1A}; 31CBC_OnedEAN13Reader::CBC_OnedEAN13Reader() {} 32CBC_OnedEAN13Reader::~CBC_OnedEAN13Reader() {} 33void CBC_OnedEAN13Reader::DetermineFirstDigit(CFX_ByteString& result, 34 int32_t lgPatternFound, 35 int32_t& e) { 36 for (int32_t d = 0; d < 10; d++) { 37 if (lgPatternFound == FIRST_DIGIT_ENCODINGS[d]) { 38 result.Insert(0, (FX_CHAR)('0' + d)); 39 return; 40 } 41 } 42 e = BCExceptionNotFound; 43 BC_EXCEPTION_CHECK_ReturnVoid(e); 44} 45int32_t CBC_OnedEAN13Reader::DecodeMiddle(CBC_CommonBitArray* row, 46 CFX_Int32Array* startRange, 47 CFX_ByteString& resultString, 48 int32_t& e) { 49 CFX_Int32Array counters; 50 counters.Add(0); 51 counters.Add(0); 52 counters.Add(0); 53 counters.Add(0); 54 int32_t end = row->GetSize(); 55 int32_t rowOffset = (*startRange)[1]; 56 int32_t lgPatternFound = 0; 57 for (int32_t x = 0; x < 6 && rowOffset < end; x++) { 58 int32_t bestMatch = 59 DecodeDigit(row, &counters, rowOffset, 60 &(CBC_OneDimReader::L_AND_G_PATTERNS[0][0]), 20, e); 61 BC_EXCEPTION_CHECK_ReturnValue(e, 0); 62 resultString += (FX_CHAR)('0' + bestMatch % 10); 63 for (int32_t i = 0; i < counters.GetSize(); i++) { 64 rowOffset += counters[i]; 65 } 66 if (bestMatch >= 10) { 67 lgPatternFound |= 1 << (5 - x); 68 } 69 } 70 DetermineFirstDigit(resultString, lgPatternFound, e); 71 BC_EXCEPTION_CHECK_ReturnValue(e, 0); 72 CFX_Int32Array result; 73 result.Add(CBC_OneDimReader::MIDDLE_PATTERN[0]); 74 result.Add(CBC_OneDimReader::MIDDLE_PATTERN[1]); 75 result.Add(CBC_OneDimReader::MIDDLE_PATTERN[2]); 76 result.Add(CBC_OneDimReader::MIDDLE_PATTERN[3]); 77 result.Add(CBC_OneDimReader::MIDDLE_PATTERN[4]); 78 CFX_Int32Array* middleRange = 79 FindGuardPattern(row, rowOffset, TRUE, &result, e); 80 BC_EXCEPTION_CHECK_ReturnValue(e, 0); 81 rowOffset = (*middleRange)[1]; 82 if (middleRange != NULL) { 83 delete middleRange; 84 middleRange = NULL; 85 } 86 for (int32_t Y = 0; Y < 6 && rowOffset < end; Y++) { 87 int32_t bestMatch = 88 DecodeDigit(row, &counters, rowOffset, 89 &(CBC_OneDimReader::L_PATTERNS[0][0]), 10, e); 90 BC_EXCEPTION_CHECK_ReturnValue(e, 0); 91 resultString += (FX_CHAR)('0' + bestMatch); 92 for (int32_t k = 0; k < counters.GetSize(); k++) { 93 rowOffset += counters[k]; 94 } 95 } 96 return rowOffset; 97} 98