Mercurial > hgrepos > Python2 > PyMuPDF
annotate mupdf-source/thirdparty/zxing-cpp/core/src/LogMatrix.h @ 24:21c6080bc183
When building "_build.py": also handle Mercurial repositories.
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| author | Franz Glasner <fzglas.hg@dom66.de> |
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| date | Fri, 19 Sep 2025 18:19:48 +0200 |
| parents | b50eed0cc0ef |
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| rev | line source |
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1 /* |
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2 * Copyright 2020 Axel Waggershauser |
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3 */ |
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4 // SPDX-License-Identifier: Apache-2.0 |
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5 |
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6 #pragma once |
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7 |
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8 #include "BitMatrix.h" |
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9 #include "Matrix.h" |
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10 #include "Point.h" |
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11 |
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12 #include <cassert> |
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13 #include <cstdint> |
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14 #include <cstdio> |
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15 #include <string> |
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16 |
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17 namespace ZXing { |
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18 |
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19 #ifdef PRINT_DEBUG |
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20 |
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21 class LogMatrix |
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22 { |
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23 using LogBuffer = Matrix<uint8_t>; |
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24 LogBuffer _log; |
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25 const BitMatrix* _image = nullptr; |
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26 int _scale = 1; |
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27 |
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28 public: |
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29 void init(const BitMatrix* image, int scale = 1) |
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30 { |
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31 _image = image; |
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32 _scale = scale; |
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33 _log = LogBuffer(_image->width() * _scale, _image->height() * _scale); |
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34 } |
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35 |
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36 void write(const char* fn) |
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37 { |
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38 assert(_image); |
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39 FILE* f = fopen(fn, "wb"); |
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40 |
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41 // Write PPM header, P5 == grey, P6 == rgb |
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42 fprintf(f, "P6\n%d %d\n255\n", _log.width(), _log.height()); |
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43 |
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44 // Write pixels |
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45 for (int y = 0; y < _log.height(); ++y) |
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46 for (int x = 0; x < _log.width(); ++x) { |
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47 unsigned char pix[3]; |
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48 unsigned char &r = pix[0], &g = pix[1], &b = pix[2]; |
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49 r = g = b = _image->get(x / _scale, y / _scale) ? 0 : 255; |
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50 if (_scale > 1 && x % _scale == _scale / 2 && y % _scale == _scale / 2) |
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51 r = g = b = r ? 230 : 50; |
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52 switch (_log.get(x, y)) { |
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53 case 1: r = g = b = _scale > 1 ? 128 : (r ? 230 : 50); break; |
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54 case 2: r = b = 50, g = 220; break; |
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55 case 3: g = r = 100, b = 250; break; |
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56 case 4: g = b = 100, r = 250; break; |
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57 } |
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58 fwrite(&pix, 3, 1, f); |
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59 } |
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60 fclose(f); |
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61 } |
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62 |
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63 template <typename T> |
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64 void operator()(const PointT<T>& p, int color = 1) |
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65 { |
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66 if (_image && _image->isIn(p)) |
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67 _log.set(static_cast<int>(p.x * _scale), static_cast<int>(p.y * _scale), color); |
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68 } |
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69 |
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70 void operator()(const PointT<int>& p, int color) |
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71 { |
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72 operator()(centered(p), color); |
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73 } |
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74 |
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75 template <typename T> |
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76 void operator()(const std::vector<PointT<T>>& points, int color = 2) |
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77 { |
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78 for (auto p : points) |
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79 operator()(p, color); |
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80 } |
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81 }; |
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82 |
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83 extern LogMatrix log; |
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84 |
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85 class LogMatrixWriter |
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86 { |
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87 LogMatrix &log; |
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88 std::string fn; |
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89 |
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90 public: |
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91 LogMatrixWriter(LogMatrix& log, const BitMatrix& image, int scale, std::string fn) : log(log), fn(fn) |
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92 { |
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93 log.init(&image, scale); |
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94 } |
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95 ~LogMatrixWriter() { log.write(fn.c_str()); } |
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96 }; |
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97 |
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98 #else |
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99 |
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100 template<typename T> void log(PointT<T>, int = 0) {} |
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101 |
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102 #endif |
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103 |
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104 } // namespace ZXing |
