Mercurial > hg > orthanc-stone

annotate Framework/SmartLoader.cpp @ 322:a902a07769d4 am-2

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wip: preload slice
author am@osimis.io
date Mon, 15 Oct 2018 22:43:02 +0200
parents 3a4ca166fafa
children 7a364e44fbb4
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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) 2017-2018 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 #include "Layers/OrthancFrameLayerSource.h"
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24 #include "Messages/MessageForwarder.h"
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25 #include "Core/Images/Image.h"
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26 #include "Framework/Widgets/LayerWidget.h"
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27 #include "Framework/StoneException.h"
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28 #include "Framework/Layers/FrameRenderer.h"
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29
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30 namespace OrthancStone
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31 {
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32 enum CachedSliceStatus
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33 {
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34 CachedSliceStatus_ScheduledToLoad,
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35 CachedSliceStatus_GeometryLoaded,
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36 CachedSliceStatus_ImageLoaded
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37 };
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38
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39 class SmartLoader::CachedSlice : public LayerSourceBase
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40 {
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41 public:
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42 unsigned int sliceIndex_;
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43 std::auto_ptr<Slice> slice_;
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44 boost::shared_ptr<Orthanc::ImageAccessor> image_;
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45 SliceImageQuality effectiveQuality_;
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46 CachedSliceStatus status_;
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47
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48 public:
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49
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50 CachedSlice(MessageBroker& broker)
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51 : LayerSourceBase(broker)
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52 {}
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53
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54 virtual bool GetExtent(std::vector<Vector>& points,
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55 const CoordinateSystem3D& viewportSlice)
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56 {
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57 // TODO: viewportSlice is not used !!!!
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58 slice_->GetExtent(points);
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59 return true;
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60 }
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61
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62 virtual void ScheduleLayerCreation(const CoordinateSystem3D& viewportSlice)
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63 {
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64 // TODO: viewportSlice is not used !!!!
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65
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66 // it has already been loaded -> trigger the "layer ready" message immediately
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67 bool isFull = (effectiveQuality_ == SliceImageQuality_FullPng || effectiveQuality_ == SliceImageQuality_FullPam);
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68 std::auto_ptr<Orthanc::ImageAccessor> accessor(new Orthanc::ImageAccessor());
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69 image_->GetReadOnlyAccessor(*accessor);
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70 LayerSourceBase::NotifyLayerReady(FrameRenderer::CreateRenderer(accessor.release(), *slice_, isFull),
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71 slice_->GetGeometry(), false);
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72 }
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73
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74 CachedSlice* Clone() const
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75 {
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76 CachedSlice* output = new CachedSlice(broker_);
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77 output->sliceIndex_ = sliceIndex_;
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78 output->slice_.reset(slice_->Clone());
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79 output->image_ = image_;
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80 output->effectiveQuality_ = effectiveQuality_;
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81 output->status_ = status_;
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82
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83 return output;
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84 }
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85
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86 };
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87
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88
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89 SmartLoader::SmartLoader(MessageBroker& broker, OrthancApiClient& orthancApiClient) :
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90 IObservable(broker),
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91 IObserver(broker),
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92 imageQuality_(SliceImageQuality_FullPam),
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93 orthancApiClient_(orthancApiClient)
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94 {
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95 }
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96
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97 void SmartLoader::SetFrameInWidget(LayerWidget& layerWidget, size_t layerIndex, const std::string& instanceId, unsigned int frame)
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98 {
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99 // TODO: check if this frame has already been loaded or is already being loaded.
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100 // - if already loaded: create a "clone" that will emit the GeometryReady/ImageReady messages "immediately"
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101 // (it can not be immediate because Observers needs to register first and this is done after this method returns)
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102 // - if currently loading, we need to return an object that will observe the existing LayerSource and forward
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103 // the messages to its observables
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104 // in both cases, we must be carefull about objects lifecycle !!!
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105
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106 std::auto_ptr<ILayerSource> layerSource;
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107 std::string sliceKeyId = instanceId + ":" + std::to_string(frame);
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108
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109 if (cachedSlices_.find(sliceKeyId) != cachedSlices_.end()) // && cachedSlices_[sliceKeyId]->status_ == CachedSliceStatus_Loaded)
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110 {
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111 layerSource.reset(cachedSlices_[sliceKeyId]->Clone());
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112 }
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113 else
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114 {
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115 layerSource.reset(new OrthancFrameLayerSource(IObserver::broker_, orthancApiClient_));
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116 dynamic_cast<OrthancFrameLayerSource*>(layerSource.get())->SetImageQuality(imageQuality_);
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117 layerSource->RegisterObserverCallback(new Callable<SmartLoader, ILayerSource::GeometryReadyMessage>(*this, &SmartLoader::OnLayerGeometryReady));
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118 layerSource->RegisterObserverCallback(new Callable<SmartLoader, ILayerSource::ImageReadyMessage>(*this, &SmartLoader::OnImageReady));
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119 layerSource->RegisterObserverCallback(new Callable<SmartLoader, ILayerSource::LayerReadyMessage>(*this, &SmartLoader::OnLayerReady));
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120 dynamic_cast<OrthancFrameLayerSource*>(layerSource.get())->LoadFrame(instanceId, frame);
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121 }
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122
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123 // make sure that the widget registers the events before we trigger them
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124 if (layerWidget.GetLayerCount() == layerIndex)
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125 {
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126 layerWidget.AddLayer(layerSource.release());
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127 }
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128 else if (layerWidget.GetLayerCount() > layerIndex)
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129 {
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130 layerWidget.ReplaceLayer(layerIndex, layerSource.release());
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131 }
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132 else
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133 {
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134 throw StoneException(ErrorCode_CanOnlyAddOneLayerAtATime);
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135 }
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136
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137 SmartLoader::CachedSlice* cachedSlice = dynamic_cast<SmartLoader::CachedSlice*>(layerSource.get());
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138 if (cachedSlice != NULL)
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139 {
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140 cachedSlice->NotifyGeometryReady();
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141 }
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142
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143 }
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144
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145 void SmartLoader::PreloadSlice(const std::string instanceId, unsigned int frame)
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146 {
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147 // TODO: check if it is already in the cache
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148
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149 // create the slice in the cache with "empty" data
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150 boost::shared_ptr<CachedSlice> cachedSlice(new CachedSlice(IObserver::broker_));
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151 cachedSlice->slice_.reset(new Slice(instanceId, frame));
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152 cachedSlice->status_ = CachedSliceStatus_ScheduledToLoad;
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153 std::string sliceKeyId = instanceId + ":" + std::to_string(frame);
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154
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155 cachedSlices_[sliceKeyId] = boost::shared_ptr<CachedSlice>(cachedSlice);
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156
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157 std::auto_ptr<ILayerSource> layerSource(new OrthancFrameLayerSource(IObserver::broker_, orthancApiClient_));
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158
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159 dynamic_cast<OrthancFrameLayerSource*>(layerSource.get())->SetImageQuality(imageQuality_);
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160 layerSource->RegisterObserverCallback(new Callable<SmartLoader, ILayerSource::GeometryReadyMessage>(*this, &SmartLoader::OnLayerGeometryReady));
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161 layerSource->RegisterObserverCallback(new Callable<SmartLoader, ILayerSource::ImageReadyMessage>(*this, &SmartLoader::OnImageReady));
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162 layerSource->RegisterObserverCallback(new Callable<SmartLoader, ILayerSource::LayerReadyMessage>(*this, &SmartLoader::OnLayerReady));
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163 dynamic_cast<OrthancFrameLayerSource*>(layerSource.get())->LoadFrame(instanceId, frame);
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164
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165 // keep a ref to the LayerSource until the slice is fully loaded and saved to cache
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166 preloadingInstances_[sliceKeyId] = boost::shared_ptr<ILayerSource>(layerSource.release());
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167 }
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168
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169
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170 // void PreloadStudy(const std::string studyId)
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171 // {
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172 // /* TODO */
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173 // }
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174
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175 // void PreloadSeries(const std::string seriesId)
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176 // {
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177 // /* TODO */
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178 // }
266
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179
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180
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181 void SmartLoader::OnLayerGeometryReady(const ILayerSource::GeometryReadyMessage& message)
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182 {
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183 OrthancFrameLayerSource& source = dynamic_cast<OrthancFrameLayerSource&>(message.origin_);
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184
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185 // save/replace the slice in cache
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186 const Slice& slice = source.GetSlice(0); // TODO handle GetSliceCount()
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187 std::string sliceKeyId = slice.GetOrthancInstanceId() + ":" + std::to_string(slice.GetFrame());
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188
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189 boost::shared_ptr<CachedSlice> cachedSlice(new CachedSlice(IObserver::broker_));
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190 cachedSlice->slice_.reset(slice.Clone());
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191 cachedSlice->effectiveQuality_ = source.GetImageQuality();
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192 cachedSlice->status_ = CachedSliceStatus_GeometryLoaded;
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193
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194 cachedSlices_[sliceKeyId] = boost::shared_ptr<CachedSlice>(cachedSlice);
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195
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196 // re-emit original Layer message to observers
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197 EmitMessage(message);
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198 }
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199
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200 void SmartLoader::OnImageReady(const ILayerSource::ImageReadyMessage& message)
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201 {
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202 OrthancFrameLayerSource& source = dynamic_cast<OrthancFrameLayerSource&>(message.origin_);
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203
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204 // save/replace the slice in cache
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205 const Slice& slice = source.GetSlice(0); // TODO handle GetSliceCount() ?
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206 std::string sliceKeyId = slice.GetOrthancInstanceId() + ":" + std::to_string(slice.GetFrame());
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207
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208 boost::shared_ptr<CachedSlice> cachedSlice(new CachedSlice(IObserver::broker_));
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209 cachedSlice->image_ = message.image_;
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210 cachedSlice->effectiveQuality_ = message.imageQuality_;
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211 cachedSlice->slice_.reset(message.slice_.Clone());
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212 cachedSlice->status_ = CachedSliceStatus_ImageLoaded;
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213
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214 cachedSlices_[sliceKeyId] = cachedSlice;
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215
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216 // re-emit original Layer message to observers
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217 EmitMessage(message);
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218 }
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219
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220 void SmartLoader::OnLayerReady(const ILayerSource::LayerReadyMessage& message)
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221 {
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222 OrthancFrameLayerSource& source = dynamic_cast<OrthancFrameLayerSource&>(message.origin_);
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223 const Slice& slice = source.GetSlice(0); // TODO handle GetSliceCount() ?
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224 std::string sliceKeyId = slice.GetOrthancInstanceId() + ":" + std::to_string(slice.GetFrame());
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225
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226 // 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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227 if (preloadingInstances_.find(sliceKeyId) != preloadingInstances_.end())
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228 {
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229 preloadingInstances_.erase(sliceKeyId);
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230 }
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231
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232 // re-emit original Layer message to observers
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233 EmitMessage(message);
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234 }
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235
260
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236 }