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/barcode.h"
24 #include "BC_CommonBitArray.h"
25 #include "BC_CommonBitMatrix.h"
CBC_CommonBitMatrix()26 CBC_CommonBitMatrix::CBC_CommonBitMatrix() {
27 m_width = 0;
28 m_height = 0;
29 m_rowSize = 0;
30 m_bits = NULL;
31 }
Init(int32_t dimension)32 void CBC_CommonBitMatrix::Init(int32_t dimension) {
33 m_width = dimension;
34 m_height = dimension;
35 int32_t rowSize = (m_height + 31) >> 5;
36 m_rowSize = rowSize;
37 m_bits = FX_Alloc2D(int32_t, m_rowSize, m_height);
38 FXSYS_memset(m_bits, 0, m_rowSize * m_height * sizeof(int32_t));
39 }
Init(int32_t width,int32_t height)40 void CBC_CommonBitMatrix::Init(int32_t width, int32_t height) {
41 m_width = width;
42 m_height = height;
43 int32_t rowSize = (width + 31) >> 5;
44 m_rowSize = rowSize;
45 m_bits = FX_Alloc2D(int32_t, m_rowSize, m_height);
46 FXSYS_memset(m_bits, 0, m_rowSize * m_height * sizeof(int32_t));
47 }
~CBC_CommonBitMatrix()48 CBC_CommonBitMatrix::~CBC_CommonBitMatrix() {
49 if (m_bits != NULL) {
50 FX_Free(m_bits);
51 }
52 m_bits = NULL;
53 m_height = m_width = m_rowSize = 0;
54 }
Get(int32_t x,int32_t y)55 FX_BOOL CBC_CommonBitMatrix::Get(int32_t x, int32_t y) {
56 int32_t offset = y * m_rowSize + (x >> 5);
57 if (offset >= m_rowSize * m_height || offset < 0) {
58 return false;
59 }
60 return ((((FX_DWORD)m_bits[offset]) >> (x & 0x1f)) & 1) != 0;
61 }
GetBits()62 int32_t* CBC_CommonBitMatrix::GetBits() {
63 return m_bits;
64 }
Set(int32_t x,int32_t y)65 void CBC_CommonBitMatrix::Set(int32_t x, int32_t y) {
66 int32_t offset = y * m_rowSize + (x >> 5);
67 if (offset >= m_rowSize * m_height || offset < 0) {
68 return;
69 }
70 m_bits[offset] |= 1 << (x & 0x1f);
71 }
Flip(int32_t x,int32_t y)72 void CBC_CommonBitMatrix::Flip(int32_t x, int32_t y) {
73 int32_t offset = y * m_rowSize + (x >> 5);
74 m_bits[offset] ^= 1 << (x & 0x1f);
75 }
Clear()76 void CBC_CommonBitMatrix::Clear() {
77 FXSYS_memset(m_bits, 0, m_rowSize * m_height * sizeof(int32_t));
78 }
SetRegion(int32_t left,int32_t top,int32_t width,int32_t height,int32_t & e)79 void CBC_CommonBitMatrix::SetRegion(int32_t left,
80 int32_t top,
81 int32_t width,
82 int32_t height,
83 int32_t& e) {
84 if (top < 0 || left < 0) {
85 e = BCExceptionLeftAndTopMustBeNonnegative;
86 return;
87 }
88 if (height < 1 || width < 1) {
89 e = BCExceptionHeightAndWidthMustBeAtLeast1;
90 return;
91 }
92 int32_t right = left + width;
93 int32_t bottom = top + height;
94 if (m_height < bottom || m_width < right) {
95 e = BCExceptionRegionMustFitInsideMatrix;
96 return;
97 }
98 int32_t y;
99 for (y = top; y < bottom; y++) {
100 int32_t offset = y * m_rowSize;
101 int32_t x;
102 for (x = left; x < right; x++) {
103 m_bits[offset + (x >> 5)] |= 1 << (x & 0x1f);
104 }
105 }
106 }
GetRow(int32_t y,CBC_CommonBitArray * row)107 CBC_CommonBitArray* CBC_CommonBitMatrix::GetRow(int32_t y,
108 CBC_CommonBitArray* row) {
109 CBC_CommonBitArray* rowArray = NULL;
110 if (row == NULL || row->GetSize() < m_width) {
111 rowArray = new CBC_CommonBitArray(m_width);
112 } else {
113 rowArray = new CBC_CommonBitArray(row);
114 }
115 int32_t offset = y * m_rowSize;
116 int32_t x;
117 for (x = 0; x < m_rowSize; x++) {
118 rowArray->SetBulk(x << 5, m_bits[offset + x]);
119 }
120 return rowArray;
121 }
SetRow(int32_t y,CBC_CommonBitArray * row)122 void CBC_CommonBitMatrix::SetRow(int32_t y, CBC_CommonBitArray* row) {
123 int32_t l = y * m_rowSize;
124 for (int32_t i = 0; i < m_rowSize; i++) {
125 m_bits[l] = row->GetBitArray()[i];
126 l++;
127 }
128 }
SetCol(int32_t y,CBC_CommonBitArray * col)129 void CBC_CommonBitMatrix::SetCol(int32_t y, CBC_CommonBitArray* col) {
130 for (int32_t i = 0; i < col->GetBits().GetSize(); i++) {
131 m_bits[i * m_rowSize + y] = col->GetBitArray()[i];
132 }
133 }
GetWidth()134 int32_t CBC_CommonBitMatrix::GetWidth() {
135 return m_width;
136 }
GetHeight()137 int32_t CBC_CommonBitMatrix::GetHeight() {
138 return m_height;
139 }
GetRowSize()140 int32_t CBC_CommonBitMatrix::GetRowSize() {
141 return m_rowSize;
142 }
GetDimension(int32_t & e)143 int32_t CBC_CommonBitMatrix::GetDimension(int32_t& e) {
144 if (m_width != m_height) {
145 e = BCExceptionCanNotCallGetDimensionOnNonSquareMatrix;
146 return 0;
147 }
148 return m_width;
149 }
150