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Side by Side Diff: xfa/src/fxbarcode/qrcode/BC_QRBitMatrixParser.cpp

Issue 1803723002: Move xfa/src up to xfa/. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: Rebase to master Created 4 years, 9 months ago
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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/qrcode/BC_QRBitMatrixParser.h"
24
25 #include <memory>
26
27 #include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h"
28 #include "xfa/src/fxbarcode/qrcode/BC_QRCoderFormatInformation.h"
29 #include "xfa/src/fxbarcode/qrcode/BC_QRCoderVersion.h"
30 #include "xfa/src/fxbarcode/qrcode/BC_QRDataMask.h"
31 #include "xfa/src/fxbarcode/utils.h"
32
33 CBC_QRBitMatrixParser::CBC_QRBitMatrixParser() {}
34 void CBC_QRBitMatrixParser::Init(CBC_CommonBitMatrix* bitMatrix, int32_t& e) {
35 m_dimension = bitMatrix->GetDimension(e);
36 BC_EXCEPTION_CHECK_ReturnVoid(e);
37 m_tempBitMatrix = bitMatrix;
38 if (m_dimension < 21 || (m_dimension & 0x03) != 1) {
39 e = BCExceptionRead;
40 BC_EXCEPTION_CHECK_ReturnVoid(e);
41 }
42 m_bitMatrix = m_tempBitMatrix;
43 m_parsedFormatInfo = NULL;
44 m_version = NULL;
45 }
46 CBC_QRBitMatrixParser::~CBC_QRBitMatrixParser() {
47 delete m_parsedFormatInfo;
48 }
49 CBC_QRCoderFormatInformation* CBC_QRBitMatrixParser::ReadFormatInformation(
50 int32_t& e) {
51 if (m_parsedFormatInfo) {
52 return m_parsedFormatInfo;
53 }
54 int32_t formatInfoBits = 0;
55 int32_t j;
56 for (j = 0; j < 6; j++) {
57 formatInfoBits = CopyBit(8, j, formatInfoBits);
58 }
59 formatInfoBits = CopyBit(8, 7, formatInfoBits);
60 formatInfoBits = CopyBit(8, 8, formatInfoBits);
61 formatInfoBits = CopyBit(7, 8, formatInfoBits);
62 for (int32_t i = 5; i >= 0; i--) {
63 formatInfoBits = CopyBit(i, 8, formatInfoBits);
64 }
65 m_parsedFormatInfo =
66 CBC_QRCoderFormatInformation::DecodeFormatInformation(formatInfoBits);
67 if (m_parsedFormatInfo) {
68 return m_parsedFormatInfo;
69 }
70 int32_t dimension = m_bitMatrix->GetDimension(e);
71 BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
72 formatInfoBits = 0;
73 int32_t iMin = dimension - 8;
74 for (j = dimension - 1; j >= iMin; j--) {
75 formatInfoBits = CopyBit(j, 8, formatInfoBits);
76 }
77 for (int32_t k = dimension - 7; k < dimension; k++) {
78 formatInfoBits = CopyBit(8, k, formatInfoBits);
79 }
80 m_parsedFormatInfo =
81 CBC_QRCoderFormatInformation::DecodeFormatInformation(formatInfoBits);
82 if (m_parsedFormatInfo) {
83 return m_parsedFormatInfo;
84 }
85 e = BCExceptionRead;
86 BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
87 return NULL;
88 }
89 CBC_QRCoderVersion* CBC_QRBitMatrixParser::ReadVersion(int32_t& e) {
90 if (m_version) {
91 return m_version;
92 }
93 int32_t dimension = m_bitMatrix->GetDimension(e);
94 BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
95 int32_t provisionVersion = (dimension - 17) >> 2;
96 if (provisionVersion <= 6) {
97 CBC_QRCoderVersion* qrv =
98 CBC_QRCoderVersion::GetVersionForNumber(provisionVersion, e);
99 BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
100 return qrv;
101 }
102 int32_t versionBits = 0;
103 for (int32_t i = 5; i >= 0; i--) {
104 int32_t jMin = dimension - 11;
105 for (int32_t j = dimension - 9; j >= jMin; j--) {
106 versionBits = CopyBit(i, j, versionBits);
107 }
108 }
109 m_version = CBC_QRCoderVersion::DecodeVersionInformation(versionBits, e);
110 BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
111 if (m_version && m_version->GetDimensionForVersion() == dimension) {
112 return m_version;
113 }
114 versionBits = 0;
115 for (int32_t j = 5; j >= 0; j--) {
116 int32_t iMin = dimension - 11;
117 for (int32_t i = dimension - 9; i >= iMin; i--) {
118 versionBits = CopyBit(i, j, versionBits);
119 }
120 }
121 m_version = CBC_QRCoderVersion::DecodeVersionInformation(versionBits, e);
122 BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
123 if (m_version && m_version->GetDimensionForVersion() == dimension) {
124 return m_version;
125 }
126 e = BCExceptionRead;
127 BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
128 return NULL;
129 }
130 int32_t CBC_QRBitMatrixParser::CopyBit(int32_t i,
131 int32_t j,
132 int32_t versionBits) {
133 return m_bitMatrix->Get(j, i) ? (versionBits << 1) | 0x1 : versionBits << 1;
134 }
135 CFX_ByteArray* CBC_QRBitMatrixParser::ReadCodewords(int32_t& e) {
136 CBC_QRCoderFormatInformation* formatInfo = ReadFormatInformation(e);
137 BC_EXCEPTION_CHECK_ReturnValue(e, NULL) CBC_QRCoderVersion* version =
138 ReadVersion(e);
139 BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
140 CBC_QRDataMask* dataMask =
141 CBC_QRDataMask::ForReference((int32_t)(formatInfo->GetDataMask()), e);
142 BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
143 int32_t dimension = m_bitMatrix->GetDimension(e);
144 BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
145 dataMask->UnmaskBitMatirx(m_bitMatrix, dimension);
146 std::unique_ptr<CBC_CommonBitMatrix> functionPattern(
147 version->BuildFunctionPattern(e));
148 BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
149 FX_BOOL readingUp = TRUE;
150 std::unique_ptr<CFX_ByteArray> result(new CFX_ByteArray);
151 result->SetSize(version->GetTotalCodeWords());
152 int32_t resultOffset = 0;
153 int32_t currentByte = 0;
154 int32_t bitsRead = 0;
155 for (int32_t j = dimension - 1; j > 0; j -= 2) {
156 if (j == 6) {
157 j--;
158 }
159 for (int32_t count = 0; count < dimension; count++) {
160 int32_t i = readingUp ? dimension - 1 - count : count;
161 for (int32_t col = 0; col < 2; col++) {
162 if (!functionPattern->Get(j - col, i)) {
163 bitsRead++;
164 currentByte <<= 1;
165 if (m_bitMatrix->Get(j - col, i)) {
166 currentByte |= 1;
167 }
168 if (bitsRead == 8) {
169 (*result)[resultOffset++] = (uint8_t)currentByte;
170 bitsRead = 0;
171 currentByte = 0;
172 }
173 }
174 }
175 }
176 readingUp ^= TRUE;
177 }
178 if (resultOffset != version->GetTotalCodeWords()) {
179 e = BCExceptionRead;
180 BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
181 }
182 return result.release();
183 }
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