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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 2007 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/common/BC_CommonBitMatrix.h" | |
24 #include "xfa/src/fxbarcode/qrcode/BC_QRDataMask.h" | |
25 #include "xfa/src/fxbarcode/utils.h" | |
26 | |
27 static int32_t N_DATA_MASKS = 0; | |
28 CFX_PtrArray* CBC_QRDataMask::DATA_MASKS = NULL; | |
29 | |
30 void CBC_QRDataMask::Initialize() { | |
31 DATA_MASKS = new CFX_PtrArray(); | |
32 N_DATA_MASKS = BuildDataMasks(); | |
33 } | |
34 void CBC_QRDataMask::Finalize() { | |
35 Destroy(); | |
36 delete DATA_MASKS; | |
37 } | |
38 void CBC_QRDataMask::Destroy() { | |
39 int32_t i; | |
40 for (i = 0; i < N_DATA_MASKS; i++) { | |
41 CBC_QRDataMask* p = (CBC_QRDataMask*)(*DATA_MASKS)[i]; | |
42 if (p) { | |
43 delete p; | |
44 } | |
45 } | |
46 } | |
47 void CBC_QRDataMask::UnmaskBitMatirx(CBC_CommonBitMatrix* bits, | |
48 int32_t dimension) { | |
49 for (int32_t i = 0; i < dimension; i++) { | |
50 for (int32_t j = 0; j < dimension; j++) { | |
51 if (IsMasked(i, j)) { | |
52 bits->Flip(j, i); | |
53 } | |
54 } | |
55 } | |
56 } | |
57 CBC_QRDataMask* CBC_QRDataMask::ForReference(int32_t reference, int32_t& e) { | |
58 if (reference < 0 || reference > 7) { | |
59 e = BCExceptionReferenceMustBeBetween0And7; | |
60 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
61 } | |
62 return (CBC_QRDataMask*)(*DATA_MASKS)[reference]; | |
63 } | |
64 class DataMask000 : public CBC_QRDataMask { | |
65 public: | |
66 FX_BOOL IsMasked(int32_t x, int32_t y) { return ((x + y) % 2) == 0; } | |
67 }; | |
68 class DataMask001 : public CBC_QRDataMask { | |
69 public: | |
70 FX_BOOL IsMasked(int32_t x, int32_t y) { return (x % 2) == 0; } | |
71 }; | |
72 class DataMask010 : public CBC_QRDataMask { | |
73 public: | |
74 FX_BOOL IsMasked(int32_t x, int32_t y) { return y % 3 == 0; } | |
75 }; | |
76 class DataMask011 : public CBC_QRDataMask { | |
77 public: | |
78 FX_BOOL IsMasked(int32_t x, int32_t y) { return (x + y) % 3 == 0; } | |
79 }; | |
80 class DataMask100 : public CBC_QRDataMask { | |
81 public: | |
82 FX_BOOL IsMasked(int32_t x, int32_t y) { | |
83 return (((x >> 1) + (y / 3)) % 2) == 0; | |
84 } | |
85 }; | |
86 class DataMask101 : public CBC_QRDataMask { | |
87 public: | |
88 FX_BOOL IsMasked(int32_t x, int32_t y) { | |
89 size_t temp = x * y; | |
90 return (temp % 2) + (temp % 3) == 0; | |
91 } | |
92 }; | |
93 class DataMask110 : public CBC_QRDataMask { | |
94 public: | |
95 FX_BOOL IsMasked(int32_t x, int32_t y) { | |
96 size_t temp = x * y; | |
97 return (((temp % 2) + (temp % 3)) % 2) == 0; | |
98 } | |
99 }; | |
100 class DataMask111 : public CBC_QRDataMask { | |
101 public: | |
102 FX_BOOL IsMasked(int32_t x, int32_t y) { | |
103 return ((((x + y) % 2) + ((x * y) % 3)) % 2) == 0; | |
104 } | |
105 }; | |
106 int32_t CBC_QRDataMask::BuildDataMasks() { | |
107 DATA_MASKS->Add(new DataMask000); | |
108 DATA_MASKS->Add(new DataMask001); | |
109 DATA_MASKS->Add(new DataMask010); | |
110 DATA_MASKS->Add(new DataMask011); | |
111 DATA_MASKS->Add(new DataMask100); | |
112 DATA_MASKS->Add(new DataMask101); | |
113 DATA_MASKS->Add(new DataMask110); | |
114 DATA_MASKS->Add(new DataMask111); | |
115 return DATA_MASKS->GetSize(); | |
116 } | |
117 CBC_QRDataMask::CBC_QRDataMask() {} | |
118 CBC_QRDataMask::~CBC_QRDataMask() {} | |
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