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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU Affero General Public License
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8 * as published by the Free Software Foundation, either version 3 of
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9 * the License, or (at your option) any later version.
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10 *
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11 * This program is distributed in the hope that it will be useful, but
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 * Affero General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU Affero General Public License
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17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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18 **/
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19
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20
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21 #pragma once
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22
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23 #include "../Orthanc/Plugins/Engine/SharedLibrary.h"
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24 #include "../Orthanc/Core/Images/ImageAccessor.h"
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25
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26 #include <vector>
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27
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28 namespace OrthancWSI
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29 {
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30 class OpenSlideLibrary : public boost::noncopyable
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31 {
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32 private:
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33 typedef void* (*FunctionClose) (void*);
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34 typedef int32_t (*FunctionGetLevelCount) (void*);
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35 typedef void (*FunctionGetLevelDimensions) (void*, int32_t, int64_t*, int64_t*);
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36 typedef double (*FunctionGetLevelDownsample) (void*, int32_t);
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37 typedef void* (*FunctionOpen) (const char*);
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38 typedef void (*FunctionReadRegion) (void*, uint32_t*, int64_t, int64_t, int32_t, int64_t, int64_t);
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39
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40 Orthanc::SharedLibrary library_;
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41 FunctionClose close_;
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42 FunctionGetLevelCount getLevelCount_;
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43 FunctionGetLevelDimensions getLevelDimensions_;
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44 FunctionGetLevelDownsample getLevelDownsample_;
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45 FunctionOpen open_;
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46 FunctionReadRegion readRegion_;
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47
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48 public:
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49 OpenSlideLibrary(const std::string& path);
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50
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51 static OpenSlideLibrary& GetInstance();
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52
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53 static void Initialize(const std::string& path);
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54
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55 static void Finalize();
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56
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57 class Image : public boost::noncopyable
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58 {
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59 private:
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60 struct Level
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61 {
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62 unsigned int width_;
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63 unsigned int height_;
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64 double downsample_;
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65
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66 Level();
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67
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68 Level(int64_t width,
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69 int64_t height,
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70 double downsample);
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71 };
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72
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73 OpenSlideLibrary& that_;
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74 void* handle_;
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75 std::vector<Level> levels_;
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76
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77 void Initialize(const std::string& path);
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78
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79 void Close();
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80
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81 void CheckLevel(unsigned int level) const;
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82
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83 public:
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84 Image(OpenSlideLibrary& that,
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85 const std::string& path);
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86
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87 Image(const std::string& path);
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88
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89 ~Image()
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90 {
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91 Close();
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92 }
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93
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94 unsigned int GetLevelCount() const
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95 {
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96 return levels_.size();
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97 }
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98
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99 double GetLevelDownsample(unsigned int level) const;
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100
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101 unsigned int GetLevelWidth(unsigned int level) const;
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102
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103 unsigned int GetLevelHeight(unsigned int level) const;
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104
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105 Orthanc::ImageAccessor* ReadRegion(unsigned int level,
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106 uint64_t x,
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107 uint64_t y,
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108 unsigned int width,
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109 unsigned int height);
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110 };
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111 };
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112 }
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