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 2006 Jeremias Maerki.
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 "fxbarcode/datamatrix/BC_DefaultPlacement.h"
24 #include "fxbarcode/datamatrix/BC_Encoder.h"
25
CBC_DefaultPlacement(WideString codewords,int32_t numcols,int32_t numrows)26 CBC_DefaultPlacement::CBC_DefaultPlacement(WideString codewords,
27 int32_t numcols,
28 int32_t numrows) {
29 m_codewords = codewords;
30 m_numcols = numcols;
31 m_numrows = numrows;
32 m_bits.resize(numcols * numrows);
33 for (int32_t i = 0; i < numcols * numrows; i++) {
34 m_bits[i] = (uint8_t)2;
35 }
36 }
~CBC_DefaultPlacement()37 CBC_DefaultPlacement::~CBC_DefaultPlacement() {}
38
getNumrows()39 int32_t CBC_DefaultPlacement::getNumrows() {
40 return m_numrows;
41 }
getNumcols()42 int32_t CBC_DefaultPlacement::getNumcols() {
43 return m_numcols;
44 }
getBits()45 std::vector<uint8_t>& CBC_DefaultPlacement::getBits() {
46 return m_bits;
47 }
getBit(int32_t col,int32_t row)48 bool CBC_DefaultPlacement::getBit(int32_t col, int32_t row) {
49 return m_bits[row * m_numcols + col] == 1;
50 }
setBit(int32_t col,int32_t row,bool bit)51 void CBC_DefaultPlacement::setBit(int32_t col, int32_t row, bool bit) {
52 m_bits[row * m_numcols + col] = bit ? (uint8_t)1 : (uint8_t)0;
53 }
hasBit(int32_t col,int32_t row)54 bool CBC_DefaultPlacement::hasBit(int32_t col, int32_t row) {
55 return m_bits[row * m_numcols + col] != 2;
56 }
place()57 void CBC_DefaultPlacement::place() {
58 int32_t pos = 0;
59 int32_t row = 4;
60 int32_t col = 0;
61 do {
62 if ((row == m_numrows) && (col == 0)) {
63 corner1(pos++);
64 }
65 if ((row == m_numrows - 2) && (col == 0) && ((m_numcols % 4) != 0)) {
66 corner2(pos++);
67 }
68 if ((row == m_numrows - 2) && (col == 0) && (m_numcols % 8 == 4)) {
69 corner3(pos++);
70 }
71 if ((row == m_numrows + 4) && (col == 2) && ((m_numcols % 8) == 0)) {
72 corner4(pos++);
73 }
74 do {
75 if ((row < m_numrows) && (col >= 0) && !hasBit(col, row)) {
76 utah(row, col, pos++);
77 }
78 row -= 2;
79 col += 2;
80 } while (row >= 0 && (col < m_numcols));
81 row++;
82 col += 3;
83 do {
84 if ((row >= 0) && (col < m_numcols) && !hasBit(col, row)) {
85 utah(row, col, pos++);
86 }
87 row += 2;
88 col -= 2;
89 } while ((row < m_numrows) && (col >= 0));
90 row += 3;
91 col++;
92 } while ((row < m_numrows) || (col < m_numcols));
93 if (!hasBit(m_numcols - 1, m_numrows - 1)) {
94 setBit(m_numcols - 1, m_numrows - 1, true);
95 setBit(m_numcols - 2, m_numrows - 2, true);
96 }
97 }
module(int32_t row,int32_t col,int32_t pos,int32_t bit)98 void CBC_DefaultPlacement::module(int32_t row,
99 int32_t col,
100 int32_t pos,
101 int32_t bit) {
102 if (row < 0) {
103 row += m_numrows;
104 col += 4 - ((m_numrows + 4) % 8);
105 }
106 if (col < 0) {
107 col += m_numcols;
108 row += 4 - ((m_numcols + 4) % 8);
109 }
110 int32_t v = m_codewords[pos];
111 v &= 1 << (8 - bit);
112 setBit(col, row, v != 0);
113 }
utah(int32_t row,int32_t col,int32_t pos)114 void CBC_DefaultPlacement::utah(int32_t row, int32_t col, int32_t pos) {
115 module(row - 2, col - 2, pos, 1);
116 module(row - 2, col - 1, pos, 2);
117 module(row - 1, col - 2, pos, 3);
118 module(row - 1, col - 1, pos, 4);
119 module(row - 1, col, pos, 5);
120 module(row, col - 2, pos, 6);
121 module(row, col - 1, pos, 7);
122 module(row, col, pos, 8);
123 }
corner1(int32_t pos)124 void CBC_DefaultPlacement::corner1(int32_t pos) {
125 module(m_numrows - 1, 0, pos, 1);
126 module(m_numrows - 1, 1, pos, 2);
127 module(m_numrows - 1, 2, pos, 3);
128 module(0, m_numcols - 2, pos, 4);
129 module(0, m_numcols - 1, pos, 5);
130 module(1, m_numcols - 1, pos, 6);
131 module(2, m_numcols - 1, pos, 7);
132 module(3, m_numcols - 1, pos, 8);
133 }
corner2(int32_t pos)134 void CBC_DefaultPlacement::corner2(int32_t pos) {
135 module(m_numrows - 3, 0, pos, 1);
136 module(m_numrows - 2, 0, pos, 2);
137 module(m_numrows - 1, 0, pos, 3);
138 module(0, m_numcols - 4, pos, 4);
139 module(0, m_numcols - 3, pos, 5);
140 module(0, m_numcols - 2, pos, 6);
141 module(0, m_numcols - 1, pos, 7);
142 module(1, m_numcols - 1, pos, 8);
143 }
corner3(int32_t pos)144 void CBC_DefaultPlacement::corner3(int32_t pos) {
145 module(m_numrows - 3, 0, pos, 1);
146 module(m_numrows - 2, 0, pos, 2);
147 module(m_numrows - 1, 0, pos, 3);
148 module(0, m_numcols - 2, pos, 4);
149 module(0, m_numcols - 1, pos, 5);
150 module(1, m_numcols - 1, pos, 6);
151 module(2, m_numcols - 1, pos, 7);
152 module(3, m_numcols - 1, pos, 8);
153 }
corner4(int32_t pos)154 void CBC_DefaultPlacement::corner4(int32_t pos) {
155 module(m_numrows - 1, 0, pos, 1);
156 module(m_numrows - 1, m_numcols - 1, pos, 2);
157 module(0, m_numcols - 3, pos, 3);
158 module(0, m_numcols - 2, pos, 4);
159 module(0, m_numcols - 1, pos, 5);
160 module(1, m_numcols - 3, pos, 6);
161 module(1, m_numcols - 2, pos, 7);
162 module(1, m_numcols - 1, pos, 8);
163 }
164