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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 "barcode.h" | |
24 #include "include/BC_Reader.h" | |
25 #include "include/BC_OneDReader.h" | |
26 #include "include/BC_OneDimReader.h" | |
27 #include "include/BC_CommonBitArray.h" | |
28 #include "include/BC_OnedEAN8Reader.h" | |
29 CBC_OnedEAN8Reader::CBC_OnedEAN8Reader() | |
30 { | |
31 } | |
32 CBC_OnedEAN8Reader::~CBC_OnedEAN8Reader() | |
33 { | |
34 } | |
35 FX_INT32 CBC_OnedEAN8Reader::DecodeMiddle(CBC_CommonBitArray *row, CFX_Int32Arra
y *startRange, CFX_ByteString &resultResult, FX_INT32 &e) | |
36 { | |
37 CFX_Int32Array counters; | |
38 counters.Add(0); | |
39 counters.Add(0); | |
40 counters.Add(0); | |
41 counters.Add(0); | |
42 FX_INT32 end = row->GetSize(); | |
43 FX_INT32 rowOffset = (*startRange)[1]; | |
44 FX_INT32 rowOffsetLeft = rowOffset; | |
45 for (FX_INT32 x = 0; x < 4 && rowOffset < end; x++) { | |
46 FX_INT32 bestMatch = DecodeDigit(row, &counters, rowOffset, &(CBC_OneDim
Reader::L_PATTERNS[0][0]), 10, e); | |
47 BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
48 resultResult += (FX_CHAR) ('0' + bestMatch); | |
49 for (FX_INT32 i = 0; i < counters.GetSize(); i++) { | |
50 rowOffset += counters[i]; | |
51 } | |
52 } | |
53 FX_INT32 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 = FindGuardPattern(row, rowOffset, TRUE, &result
, e); | |
61 BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
62 FX_INT32 rowOffsetMid = rowOffset; | |
63 rowOffset = (*middleRange)[1]; | |
64 if((rowOffset - rowOffsetMid) > RowOffsetLen) { | |
65 e = BCExceptionNotFound; | |
66 BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
67 } | |
68 if(middleRange != NULL) { | |
69 delete middleRange; | |
70 middleRange = NULL; | |
71 } | |
72 for (FX_INT32 y = 0; y < 4 && rowOffset < end; y++) { | |
73 FX_INT32 bestMatch = DecodeDigit(row, & counters, rowOffset, &(CBC_OneDi
mReader::L_PATTERNS[0][0]), 10, e); | |
74 BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
75 resultResult += (FX_CHAR) ('0' + bestMatch); | |
76 for (FX_INT32 i = 0; i < counters.GetSize(); i++) { | |
77 rowOffset += counters[i]; | |
78 } | |
79 } | |
80 return rowOffset; | |
81 } | |
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