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_OnedEAN8Reader.h"
CBC_OnedEAN8Reader()29 CBC_OnedEAN8Reader::CBC_OnedEAN8Reader() {}
~CBC_OnedEAN8Reader()30 CBC_OnedEAN8Reader::~CBC_OnedEAN8Reader() {}
DecodeMiddle(CBC_CommonBitArray * row,CFX_Int32Array * startRange,CFX_ByteString & resultResult,int32_t & e)31 int32_t CBC_OnedEAN8Reader::DecodeMiddle(CBC_CommonBitArray* row,
32 CFX_Int32Array* startRange,
33 CFX_ByteString& resultResult,
34 int32_t& e) {
35 CFX_Int32Array counters;
36 counters.Add(0);
37 counters.Add(0);
38 counters.Add(0);
39 counters.Add(0);
40 int32_t end = row->GetSize();
41 int32_t rowOffset = (*startRange)[1];
42 int32_t rowOffsetLeft = rowOffset;
43 for (int32_t x = 0; x < 4 && rowOffset < end; x++) {
44 int32_t bestMatch =
45 DecodeDigit(row, &counters, rowOffset,
46 &(CBC_OneDimReader::L_PATTERNS[0][0]), 10, e);
47 BC_EXCEPTION_CHECK_ReturnValue(e, 0);
48 resultResult += (FX_CHAR)('0' + bestMatch);
49 for (int32_t i = 0; i < counters.GetSize(); i++) {
50 rowOffset += counters[i];
51 }
52 }
53 int32_t RowOffsetLen = (rowOffset - rowOffsetLeft) / 4;
54 CFX_Int32Array result;
55 result.Add(CBC_OneDimReader::MIDDLE_PATTERN[0]);
56 result.Add(CBC_OneDimReader::MIDDLE_PATTERN[1]);
57 result.Add(CBC_OneDimReader::MIDDLE_PATTERN[2]);
58 result.Add(CBC_OneDimReader::MIDDLE_PATTERN[3]);
59 result.Add(CBC_OneDimReader::MIDDLE_PATTERN[4]);
60 CFX_Int32Array* middleRange =
61 FindGuardPattern(row, rowOffset, TRUE, &result, e);
62 BC_EXCEPTION_CHECK_ReturnValue(e, 0);
63 int32_t rowOffsetMid = rowOffset;
64 rowOffset = (*middleRange)[1];
65 if ((rowOffset - rowOffsetMid) > RowOffsetLen) {
66 e = BCExceptionNotFound;
67 BC_EXCEPTION_CHECK_ReturnValue(e, 0);
68 }
69 if (middleRange != NULL) {
70 delete middleRange;
71 middleRange = NULL;
72 }
73 for (int32_t y = 0; y < 4 && rowOffset < end; y++) {
74 int32_t bestMatch =
75 DecodeDigit(row, &counters, rowOffset,
76 &(CBC_OneDimReader::L_PATTERNS[0][0]), 10, e);
77 BC_EXCEPTION_CHECK_ReturnValue(e, 0);
78 resultResult += (FX_CHAR)('0' + bestMatch);
79 for (int32_t i = 0; i < counters.GetSize(); i++) {
80 rowOffset += counters[i];
81 }
82 }
83 return rowOffset;
84 }
85