Mercurial > hg > orthanc-stone

annotate Framework/Deprecated/SmartLoader.cpp @ 1326:55166e57a77c broker

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author Benjamin Golinvaux <bgo@osimis.io>
date Tue, 24 Mar 2020 21:32:35 +0100
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children 30deba7bc8e2
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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 #include "SmartLoader.h"
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23
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24 #include "../StoneException.h"
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25 #include "Core/Images/Image.h"
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26 #include "Core/Logging.h"
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27 #include "Layers/DicomSeriesVolumeSlicer.h"
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28 #include "Layers/FrameRenderer.h"
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29 #include "Widgets/SliceViewerWidget.h"
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30
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31 namespace Deprecated
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32 {
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33 enum CachedSliceStatus
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34 {
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35 CachedSliceStatus_ScheduledToLoad,
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36 CachedSliceStatus_GeometryLoaded,
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37 CachedSliceStatus_ImageLoaded
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38 };
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39
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40 class SmartLoader::CachedSlice : public IVolumeSlicer
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41 {
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42 public:
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43 class RendererFactory : public LayerReadyMessage::IRendererFactory
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44 {
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45 private:
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46 const CachedSlice& that_;
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47
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48 public:
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49 RendererFactory(const CachedSlice& that) :
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50 that_(that)
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51 {
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52 }
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53
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54 virtual ILayerRenderer* CreateRenderer() const
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55 {
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56 bool isFull = (that_.effectiveQuality_ == SliceImageQuality_FullPng ||
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57 that_.effectiveQuality_ == SliceImageQuality_FullPam);
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58
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59 return FrameRenderer::CreateRenderer(*that_.image_, *that_.slice_, isFull);
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60 }
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61 };
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62
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63 unsigned int sliceIndex_;
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64 std::unique_ptr<Slice> slice_;
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65 boost::shared_ptr<Orthanc::ImageAccessor> image_;
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66 SliceImageQuality effectiveQuality_;
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67 CachedSliceStatus status_;
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68
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69 public:
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70 virtual ~CachedSlice()
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71 {
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72 }
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73
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74 virtual bool GetExtent(std::vector<OrthancStone::Vector>& points,
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75 const OrthancStone::CoordinateSystem3D& viewportSlice)
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76 {
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77 // TODO: viewportSlice is not used !!!!
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78 slice_->GetExtent(points);
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79 return true;
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80 }
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81
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82 virtual void ScheduleLayerCreation(const OrthancStone::CoordinateSystem3D& viewportSlice)
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83 {
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84 // TODO: viewportSlice is not used !!!!
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85
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86 // it has already been loaded -> trigger the "layer ready" message immediately otherwise, do nothing now. The LayerReady will be triggered
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87 // once the VolumeSlicer is ready
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88 if (status_ == CachedSliceStatus_ImageLoaded)
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89 {
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90 LOG(WARNING) << "ScheduleLayerCreation for CachedSlice (image is loaded): " << slice_->GetOrthancInstanceId();
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91
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92 RendererFactory factory(*this);
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93 BroadcastMessage(IVolumeSlicer::LayerReadyMessage(*this, factory, slice_->GetGeometry()));
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94 }
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95 else
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96 {
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97 LOG(WARNING) << "ScheduleLayerCreation for CachedSlice (image is not loaded yet): " << slice_->GetOrthancInstanceId();
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98 }
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99 }
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100
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101 CachedSlice* Clone() const
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102 {
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103 CachedSlice* output = new CachedSlice;
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104 output->sliceIndex_ = sliceIndex_;
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105 output->slice_.reset(slice_->Clone());
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106 output->image_ = image_;
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107 output->effectiveQuality_ = effectiveQuality_;
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108 output->status_ = status_;
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109
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110 return output;
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111 }
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112
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113 };
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114
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115
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116 SmartLoader::SmartLoader(boost::shared_ptr<OrthancApiClient> orthancApiClient) :
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117 imageQuality_(SliceImageQuality_FullPam),
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118 orthancApiClient_(orthancApiClient)
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119 {
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120 }
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121
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122 void SmartLoader::SetFrameInWidget(SliceViewerWidget& sliceViewer,
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123 size_t layerIndex,
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124 const std::string& instanceId,
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125 unsigned int frame)
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126 {
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127 // TODO: check if this frame has already been loaded or is already being loaded.
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128 // - if already loaded: create a "clone" that will emit the GeometryReady/ImageReady messages "immediately"
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129 // (it can not be immediate because Observers needs to register first and this is done after this method returns)
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130 // - if currently loading, we need to return an object that will observe the existing VolumeSlicer and forward
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131 // the messages to its observables
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132 // in both cases, we must be carefull about objects lifecycle !!!
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133
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134 boost::shared_ptr<IVolumeSlicer> layerSource;
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135 std::string sliceKeyId = instanceId + ":" + boost::lexical_cast<std::string>(frame);
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136 SmartLoader::CachedSlice* cachedSlice = NULL;
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137
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138 if (cachedSlices_.find(sliceKeyId) != cachedSlices_.end()) // && cachedSlices_[sliceKeyId]->status_ == CachedSliceStatus_Loaded)
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139 {
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140 layerSource.reset(cachedSlices_[sliceKeyId]->Clone());
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141 cachedSlice = dynamic_cast<SmartLoader::CachedSlice*>(layerSource.get());
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142 }
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143 else
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144 {
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145 layerSource.reset(new DicomSeriesVolumeSlicer);
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146 dynamic_cast<DicomSeriesVolumeSlicer*>(layerSource.get())->Connect(orthancApiClient_);
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147 dynamic_cast<DicomSeriesVolumeSlicer*>(layerSource.get())->SetImageQuality(imageQuality_);
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148 Register<IVolumeSlicer::GeometryReadyMessage>(*layerSource, &SmartLoader::OnLayerGeometryReady);
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149 Register<DicomSeriesVolumeSlicer::FrameReadyMessage>(*layerSource, &SmartLoader::OnFrameReady);
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150 Register<IVolumeSlicer::LayerReadyMessage>(*layerSource, &SmartLoader::OnLayerReady);
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151 dynamic_cast<DicomSeriesVolumeSlicer*>(layerSource.get())->LoadFrame(instanceId, frame);
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152 }
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153
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154 // make sure that the widget registers the events before we trigger them
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155 if (sliceViewer.GetLayerCount() == layerIndex)
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156 {
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157 sliceViewer.AddLayer(layerSource);
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158 }
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159 else if (sliceViewer.GetLayerCount() > layerIndex)
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160 {
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161 sliceViewer.ReplaceLayer(layerIndex, layerSource);
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162 }
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163 else
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164 {
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165 throw OrthancStone::StoneException(OrthancStone::ErrorCode_CanOnlyAddOneLayerAtATime);
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166 }
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167
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168 if (cachedSlice != NULL)
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169 {
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170 BroadcastMessage(IVolumeSlicer::GeometryReadyMessage(*cachedSlice));
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171 }
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172
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173 }
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174
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175 void SmartLoader::PreloadSlice(const std::string instanceId,
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176 unsigned int frame)
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177 {
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178 // TODO: reactivate -> need to be able to ScheduleLayerLoading in IVolumeSlicer without calling ScheduleLayerCreation
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179 return;
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180 // TODO: check if it is already in the cache
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181
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182
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183
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184 // create the slice in the cache with "empty" data
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185 boost::shared_ptr<CachedSlice> cachedSlice(new CachedSlice);
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186 cachedSlice->slice_.reset(new Slice(instanceId, frame));
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187 cachedSlice->status_ = CachedSliceStatus_ScheduledToLoad;
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188 std::string sliceKeyId = instanceId + ":" + boost::lexical_cast<std::string>(frame);
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189
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190 LOG(WARNING) << "Will preload: " << sliceKeyId;
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191
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192 cachedSlices_[sliceKeyId] = boost::shared_ptr<CachedSlice>(cachedSlice);
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193
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194 std::unique_ptr<IVolumeSlicer> layerSource(new DicomSeriesVolumeSlicer);
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195 dynamic_cast<DicomSeriesVolumeSlicer*>(layerSource.get())->Connect(orthancApiClient_);
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196 dynamic_cast<DicomSeriesVolumeSlicer*>(layerSource.get())->SetImageQuality(imageQuality_);
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197 Register<IVolumeSlicer::GeometryReadyMessage>(*layerSource, &SmartLoader::OnLayerGeometryReady);
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198 Register<DicomSeriesVolumeSlicer::FrameReadyMessage>(*layerSource, &SmartLoader::OnFrameReady);
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199 Register<IVolumeSlicer::LayerReadyMessage>(*layerSource, &SmartLoader::OnLayerReady);
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200 dynamic_cast<DicomSeriesVolumeSlicer*>(layerSource.get())->LoadFrame(instanceId, frame);
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201
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202 // keep a ref to the VolumeSlicer until the slice is fully loaded and saved to cache
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203 preloadingInstances_[sliceKeyId] = boost::shared_ptr<IVolumeSlicer>(layerSource.release());
270
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204 }
260
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205
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206
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207 // void PreloadStudy(const std::string studyId)
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208 // {
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209 // /* TODO */
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210 // }
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211
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212 // void PreloadSeries(const std::string seriesId)
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213 // {
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214 // /* TODO */
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215 // }
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216
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217
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218 void SmartLoader::OnLayerGeometryReady(const IVolumeSlicer::GeometryReadyMessage& message)
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219 {
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220 const DicomSeriesVolumeSlicer& source =
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221 dynamic_cast<const DicomSeriesVolumeSlicer&>(message.GetOrigin());
322
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222
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223 // save/replace the slice in cache
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224 const Slice& slice = source.GetSlice(0); // TODO handle GetSliceCount()
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225 std::string sliceKeyId = (slice.GetOrthancInstanceId() + ":" +
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226 boost::lexical_cast<std::string>(slice.GetFrame()));
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227
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228 LOG(WARNING) << "Geometry ready: " << sliceKeyId;
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229
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230 boost::shared_ptr<CachedSlice> cachedSlice(new CachedSlice);
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231 cachedSlice->slice_.reset(slice.Clone());
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232 cachedSlice->effectiveQuality_ = source.GetImageQuality();
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233 cachedSlice->status_ = CachedSliceStatus_GeometryLoaded;
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234
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235 cachedSlices_[sliceKeyId] = boost::shared_ptr<CachedSlice>(cachedSlice);
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236
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237 // re-emit original Layer message to observers
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238 BroadcastMessage(message);
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239 }
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240
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241
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242 void SmartLoader::OnFrameReady(const DicomSeriesVolumeSlicer::FrameReadyMessage& message)
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243 {
322
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244 // save/replace the slice in cache
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245 const Slice& slice = message.GetSlice();
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246 std::string sliceKeyId = (slice.GetOrthancInstanceId() + ":" +
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247 boost::lexical_cast<std::string>(slice.GetFrame()));
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248
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249 LOG(WARNING) << "Image ready: " << sliceKeyId;
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250
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251 boost::shared_ptr<CachedSlice> cachedSlice(new CachedSlice);
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252 cachedSlice->image_.reset(Orthanc::Image::Clone(message.GetFrame()));
378
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253 cachedSlice->effectiveQuality_ = message.GetImageQuality();
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254 cachedSlice->slice_.reset(message.GetSlice().Clone());
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255 cachedSlice->status_ = CachedSliceStatus_ImageLoaded;
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256
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257 cachedSlices_[sliceKeyId] = cachedSlice;
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258
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259 // re-emit original Layer message to observers
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260 BroadcastMessage(message);
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261 }
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262
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263
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264 void SmartLoader::OnLayerReady(const IVolumeSlicer::LayerReadyMessage& message)
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265 {
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266 const DicomSeriesVolumeSlicer& source =
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267 dynamic_cast<const DicomSeriesVolumeSlicer&>(message.GetOrigin());
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268
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269 const Slice& slice = source.GetSlice(0); // TODO handle GetSliceCount() ?
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270 std::string sliceKeyId = (slice.GetOrthancInstanceId() + ":" +
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271 boost::lexical_cast<std::string>(slice.GetFrame()));
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272
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273 LOG(WARNING) << "Layer ready: " << sliceKeyId;
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274
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275 // remove the slice from the preloading slices now that it has been fully loaded and it is referenced in the cache
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276 if (preloadingInstances_.find(sliceKeyId) != preloadingInstances_.end())
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277 {
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278 preloadingInstances_.erase(sliceKeyId);
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279 }
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280
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281 // re-emit original Layer message to observers
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282 BroadcastMessage(message);
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283 }
260
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284 }