Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/zxing-cpp/core/src/Matrix.h @ 32:72c1b70d4f5c

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author Franz Glasner <fzglas.hg@dom66.de>
date Sun, 21 Sep 2025 15:10:12 +0200
parents b50eed0cc0ef
children
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1 /*
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2 * Copyright 2016 Huy Cuong Nguyen
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3 * Copyright 2016 ZXing authors
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4 */
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5 // SPDX-License-Identifier: Apache-2.0
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7 #pragma once
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9 #include "Point.h"
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10 #include "ZXAlgorithms.h"
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12 #include <stdexcept>
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13 #include <algorithm>
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14 #include <cassert>
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15 #include <vector>
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17 namespace ZXing {
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19 template <class T>
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20 class Matrix
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21 {
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22 public:
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23 using value_t = T;
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25 private:
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26 int _width = 0;
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27 int _height = 0;
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28 std::vector<value_t> _data;
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30 // Nothing wrong to support it, just to make it explicit, instead of by mistake.
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31 // Use copy() below.
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32 Matrix(const Matrix &) = default;
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33 Matrix& operator=(const Matrix &) = delete;
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35 public:
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36 Matrix() = default;
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38 #if defined(__llvm__) || (defined(__GNUC__) && (__GNUC__ > 7))
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39 __attribute__((no_sanitize("signed-integer-overflow")))
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40 #endif
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41 Matrix(int width, int height, value_t val = {}) : _width(width), _height(height), _data(_width * _height, val) {
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42 if (width != 0 && Size(_data) / width != height)
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43 throw std::invalid_argument("Invalid size: width * height is too big");
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44 }
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46 Matrix(Matrix&&) noexcept = default;
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47 Matrix& operator=(Matrix&&) noexcept = default;
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49 Matrix copy() const {
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50 return *this;
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51 }
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53 int height() const {
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54 return _height;
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55 }
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57 int width() const {
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58 return _width;
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59 }
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61 int size() const {
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62 return Size(_data);
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63 }
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65 value_t& operator()(int x, int y)
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66 {
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67 assert(x >= 0 && x < _width && y >= 0 && y < _height);
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68 return _data[y * _width + x];
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69 }
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71 const T& operator()(int x, int y) const
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72 {
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73 assert(x >= 0 && x < _width && y >= 0 && y < _height);
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74 return _data[y * _width + x];
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75 }
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77 const value_t& get(int x, int y) const {
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78 return operator()(x, y);
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79 }
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81 value_t& set(int x, int y, value_t value) {
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82 return operator()(x, y) = value;
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83 }
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85 const value_t& get(PointI p) const {
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86 return operator()(p.x, p.y);
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87 }
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89 value_t& set(PointI p, value_t value) {
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90 return operator()(p.x, p.y) = value;
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91 }
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93 const value_t* data() const {
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94 return _data.data();
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95 }
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97 const value_t* begin() const {
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98 return _data.data();
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99 }
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101 const value_t* end() const {
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102 return _data.data() + _width * _height;
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103 }
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104
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105 value_t* begin() {
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106 return _data.data();
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107 }
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108
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109 value_t* end() {
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110 return _data.data() + _width * _height;
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111 }
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112
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113 void clear(value_t value = {}) {
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114 std::fill(_data.begin(), _data.end(), value);
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115 }
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116 };
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117
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118 } // ZXing