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 "fxbarcode/common/BC_CommonBitMatrix.h"
24
25 #include <algorithm>
26 #include <iterator>
27
28 #include "third_party/base/stl_util.h"
29
CBC_CommonBitMatrix()30 CBC_CommonBitMatrix::CBC_CommonBitMatrix() {}
31
Init(int32_t width,int32_t height)32 void CBC_CommonBitMatrix::Init(int32_t width, int32_t height) {
33 m_width = width;
34 m_height = height;
35 m_rowSize = (width + 31) >> 5;
36 m_bits = pdfium::Vector2D<int32_t>(m_rowSize, m_height);
37 }
38
39 CBC_CommonBitMatrix::~CBC_CommonBitMatrix() = default;
40
Get(int32_t x,int32_t y) const41 bool CBC_CommonBitMatrix::Get(int32_t x, int32_t y) const {
42 int32_t offset = y * m_rowSize + (x >> 5);
43 if (offset >= m_rowSize * m_height || offset < 0)
44 return false;
45 return ((((uint32_t)m_bits[offset]) >> (x & 0x1f)) & 1) != 0;
46 }
47
Set(int32_t x,int32_t y)48 void CBC_CommonBitMatrix::Set(int32_t x, int32_t y) {
49 int32_t offset = y * m_rowSize + (x >> 5);
50 ASSERT(offset >= 0);
51 ASSERT(offset < m_rowSize * m_height);
52 m_bits[offset] |= 1 << (x & 0x1f);
53 }
54