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annotate Framework/Loaders/OrthancSeriesVolumeProgressiveLoader.h @ 1337:b1396be5aa27 broker

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Moved the fixed loaders back from the dead
author Benjamin Golinvaux <bgo@osimis.io>
date Fri, 03 Apr 2020 16:13:06 +0200
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children 556b4bc19118
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1 /**
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2 * Stone of Orthanc
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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 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #pragma once
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23
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24 #include "../../Loaders/IFetchingItemsSorter.h"
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25 #include "../../Loaders/IFetchingStrategy.h"
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26 #include "../../Messages/IObservable.h"
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27 #include "../../Messages/ObserverBase.h"
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28 #include "../../Oracle/GetOrthancImageCommand.h"
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29 #include "../../Oracle/GetOrthancWebViewerJpegCommand.h"
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30 #include "../../Oracle/IOracle.h"
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31 #include "../../Oracle/OrthancRestApiCommand.h"
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32 #include "../../Toolbox/SlicesSorter.h"
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33 #include "../../Volumes/DicomVolumeImage.h"
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34 #include "../../Volumes/IVolumeSlicer.h"
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35
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36 #include "../Volumes/IGeometryProvider.h"
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37
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38
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39 #include <boost/shared_ptr.hpp>
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40
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41 namespace OrthancStone
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42 {
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43 /**
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44 This class is used to manage the progressive loading of a volume that
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45 is stored in a Dicom series.
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46 */
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47 class OrthancSeriesVolumeProgressiveLoader :
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48 public OrthancStone::ObserverBase<OrthancSeriesVolumeProgressiveLoader>,
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49 public OrthancStone::IObservable,
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50 public OrthancStone::IVolumeSlicer,
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51 public IGeometryProvider
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52 {
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53 private:
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54 static const unsigned int QUALITY_00 = 0;
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55 static const unsigned int QUALITY_01 = 1;
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56 static const unsigned int QUALITY_02 = 2;
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57
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58 class ExtractedSlice;
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59
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60 /** Helper class internal to OrthancSeriesVolumeProgressiveLoader */
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61 class SeriesGeometry : public boost::noncopyable
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62 {
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63 private:
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64 void CheckSlice(size_t index,
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65 const OrthancStone::DicomInstanceParameters& reference) const;
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66
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67 void CheckVolume() const;
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68
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69 void Clear();
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70
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71 void CheckSliceIndex(size_t index) const;
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72
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73 std::unique_ptr<OrthancStone::VolumeImageGeometry> geometry_;
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74 std::vector<OrthancStone::DicomInstanceParameters*> slices_;
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75 std::vector<uint64_t> slicesRevision_;
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76
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77 public:
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78 ~SeriesGeometry()
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79 {
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80 Clear();
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81 }
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82
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83 void ComputeGeometry(OrthancStone::SlicesSorter& slices);
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84
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85 virtual bool HasGeometry() const
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86 {
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87 return geometry_.get() != NULL;
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88 }
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89
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90 virtual const OrthancStone::VolumeImageGeometry& GetImageGeometry() const;
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91
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92 const OrthancStone::DicomInstanceParameters& GetSliceParameters(size_t index) const;
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93
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94 uint64_t GetSliceRevision(size_t index) const;
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95
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96 void IncrementSliceRevision(size_t index);
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97 };
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98
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99 void ScheduleNextSliceDownload();
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100
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101 void LoadGeometry(const OrthancStone::OrthancRestApiCommand::SuccessMessage& message);
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102
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103 void SetSliceContent(unsigned int sliceIndex,
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104 const Orthanc::ImageAccessor& image,
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105 unsigned int quality);
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106
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107 void LoadBestQualitySliceContent(const OrthancStone::GetOrthancImageCommand::SuccessMessage& message);
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108
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109 void LoadJpegSliceContent(const OrthancStone::GetOrthancWebViewerJpegCommand::SuccessMessage& message);
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110
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111 OrthancStone::ILoadersContext& loadersContext_;
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112 bool active_;
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113 bool progressiveQuality_;
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114 unsigned int simultaneousDownloads_;
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115 SeriesGeometry seriesGeometry_;
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116 boost::shared_ptr<OrthancStone::DicomVolumeImage> volume_;
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117 std::unique_ptr<OrthancStone::IFetchingItemsSorter::IFactory> sorter_;
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118 std::unique_ptr<OrthancStone::IFetchingStrategy> strategy_;
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119 std::vector<unsigned int> slicesQuality_;
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120 bool volumeImageReadyInHighQuality_;
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121
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122 OrthancSeriesVolumeProgressiveLoader(
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123 OrthancStone::ILoadersContext& loadersContext,
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124 boost::shared_ptr<OrthancStone::DicomVolumeImage> volume,
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125 bool progressiveQuality);
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126
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127 public:
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128 ORTHANC_STONE_DEFINE_ORIGIN_MESSAGE(__FILE__, __LINE__, VolumeImageReadyInHighQuality, OrthancSeriesVolumeProgressiveLoader);
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129
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130 /**
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131 See doc for the progressiveQuality_ field
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132 */
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133 static boost::shared_ptr<OrthancSeriesVolumeProgressiveLoader> Create(
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134 OrthancStone::ILoadersContext& context,
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135 boost::shared_ptr<OrthancStone::DicomVolumeImage> volume,
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136 bool progressiveQuality = false);
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137
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138 virtual ~OrthancSeriesVolumeProgressiveLoader();
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139
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140 void SetSimultaneousDownloads(unsigned int count);
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141
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142 bool IsVolumeImageReadyInHighQuality() const
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143 {
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144 return volumeImageReadyInHighQuality_;
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145 }
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146
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147 void LoadSeries(const std::string& seriesId);
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148
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149 /**
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150 This getter is used by clients that do not receive the geometry through
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151 subscribing, for instance if they are created or listening only AFTER the
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152 "geometry loaded" message is broadcast
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153 */
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154 bool HasGeometry() const ORTHANC_OVERRIDE
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155 {
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156 return seriesGeometry_.HasGeometry();
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157 }
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158
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159 /**
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160 Same remark as HasGeometry
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161 */
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162 const OrthancStone::VolumeImageGeometry& GetImageGeometry() const ORTHANC_OVERRIDE
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163 {
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164 return seriesGeometry_.GetImageGeometry();
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165 }
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166
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167 /**
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168 When a slice is requested, the strategy algorithm (that defines the
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169 sequence of resources to be loaded from the server) is modified to
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170 take into account this request (this is done in the ExtractedSlice ctor)
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171 */
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172 virtual IExtractedSlice*
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173 ExtractSlice(const OrthancStone::CoordinateSystem3D& cuttingPlane) ORTHANC_OVERRIDE;
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174 };
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175 }