Mercurial > hg > orthanc-stone

annotate Framework/SmartLoader.cpp @ 378:814fa32e2fcc

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refactoring
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 06 Nov 2018 14:21:02 +0100
parents 8eb4fe74000f
children ba5ad93f935a
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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 #include "Core/Logging.h"
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30
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31 namespace OrthancStone
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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 LayerSourceBase
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41 {
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42 public:
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43 unsigned int sliceIndex_;
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44 std::auto_ptr<Slice> slice_;
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45 boost::shared_ptr<Orthanc::ImageAccessor> image_;
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46 SliceImageQuality effectiveQuality_;
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47 CachedSliceStatus status_;
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48
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49 public:
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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
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55 virtual ~CachedSlice()
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56 {
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57 }
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58
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59 virtual bool GetExtent(std::vector<Vector>& points,
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60 const CoordinateSystem3D& viewportSlice)
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61 {
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62 // TODO: viewportSlice is not used !!!!
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63 slice_->GetExtent(points);
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64 return true;
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65 }
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66
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67 virtual void ScheduleLayerCreation(const CoordinateSystem3D& viewportSlice)
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68 {
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69 // TODO: viewportSlice is not used !!!!
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70
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71 // it has already been loaded -> trigger the "layer ready" message immediately otherwise, do nothing now. The LayerReady will be triggered
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72 // once the LayerSource is ready
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73 if (status_ == CachedSliceStatus_ImageLoaded)
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74 {
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75 LOG(WARNING) << "ScheduleLayerCreation for CachedSlice (image is loaded): " << slice_->GetOrthancInstanceId();
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76 bool isFull = (effectiveQuality_ == SliceImageQuality_FullPng || effectiveQuality_ == SliceImageQuality_FullPam);
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77 LayerSourceBase::NotifyLayerReady(FrameRenderer::CreateRenderer(*image_, *slice_, isFull),
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78 slice_->GetGeometry(), false);
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79 }
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80 else
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81 {
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82 LOG(WARNING) << "ScheduleLayerCreation for CachedSlice (image is not loaded yet): " << slice_->GetOrthancInstanceId();
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83 }
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84 }
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85
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86 CachedSlice* Clone() const
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87 {
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88 CachedSlice* output = new CachedSlice(broker_);
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89 output->sliceIndex_ = sliceIndex_;
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90 output->slice_.reset(slice_->Clone());
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91 output->image_ = image_;
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92 output->effectiveQuality_ = effectiveQuality_;
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93 output->status_ = status_;
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94
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95 return output;
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96 }
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97
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98 };
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99
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100
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101 SmartLoader::SmartLoader(MessageBroker& broker,
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102 OrthancApiClient& orthancApiClient) :
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103 IObservable(broker),
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104 IObserver(broker),
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105 imageQuality_(SliceImageQuality_FullPam),
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106 orthancApiClient_(orthancApiClient)
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107 {
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108 }
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109
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110 void SmartLoader::SetFrameInWidget(LayerWidget& layerWidget,
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111 size_t layerIndex,
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112 const std::string& instanceId,
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113 unsigned int frame)
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114 {
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115 // TODO: check if this frame has already been loaded or is already being loaded.
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116 // - if already loaded: create a "clone" that will emit the GeometryReady/ImageReady messages "immediately"
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117 // (it can not be immediate because Observers needs to register first and this is done after this method returns)
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118 // - if currently loading, we need to return an object that will observe the existing LayerSource and forward
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119 // the messages to its observables
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120 // in both cases, we must be carefull about objects lifecycle !!!
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121
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122 std::auto_ptr<ILayerSource> layerSource;
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123 std::string sliceKeyId = instanceId + ":" + boost::lexical_cast<std::string>(frame);
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124 SmartLoader::CachedSlice* cachedSlice = NULL;
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125
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126 if (cachedSlices_.find(sliceKeyId) != cachedSlices_.end()) // && cachedSlices_[sliceKeyId]->status_ == CachedSliceStatus_Loaded)
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127 {
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128 layerSource.reset(cachedSlices_[sliceKeyId]->Clone());
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129 cachedSlice = dynamic_cast<SmartLoader::CachedSlice*>(layerSource.get());
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130 }
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131 else
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132 {
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133 layerSource.reset(new OrthancFrameLayerSource(IObserver::broker_, orthancApiClient_));
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134 dynamic_cast<OrthancFrameLayerSource*>(layerSource.get())->SetImageQuality(imageQuality_);
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135 layerSource->RegisterObserverCallback(new Callable<SmartLoader, ILayerSource::GeometryReadyMessage>(*this, &SmartLoader::OnLayerGeometryReady));
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136 layerSource->RegisterObserverCallback(new Callable<SmartLoader, ILayerSource::ImageReadyMessage>(*this, &SmartLoader::OnImageReady));
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137 layerSource->RegisterObserverCallback(new Callable<SmartLoader, ILayerSource::LayerReadyMessage>(*this, &SmartLoader::OnLayerReady));
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138 dynamic_cast<OrthancFrameLayerSource*>(layerSource.get())->LoadFrame(instanceId, frame);
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139 }
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141 // make sure that the widget registers the events before we trigger them
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142 if (layerWidget.GetLayerCount() == layerIndex)
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143 {
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144 layerWidget.AddLayer(layerSource.release());
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145 }
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146 else if (layerWidget.GetLayerCount() > layerIndex)
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147 {
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148 layerWidget.ReplaceLayer(layerIndex, layerSource.release());
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149 }
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150 else
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151 {
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152 throw StoneException(ErrorCode_CanOnlyAddOneLayerAtATime);
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153 }
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154
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155 if (cachedSlice != NULL)
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156 {
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157 cachedSlice->NotifyGeometryReady();
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158 }
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159
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160 }
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161
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162 void SmartLoader::PreloadSlice(const std::string instanceId,
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163 unsigned int frame)
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164 {
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165 // TODO: reactivate -> need to be able to ScheduleLayerLoading in ILayerSource without calling ScheduleLayerCreation
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166 return;
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167 // TODO: check if it is already in the cache
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168
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169
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170
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171 // create the slice in the cache with "empty" data
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172 boost::shared_ptr<CachedSlice> cachedSlice(new CachedSlice(IObserver::broker_));
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173 cachedSlice->slice_.reset(new Slice(instanceId, frame));
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174 cachedSlice->status_ = CachedSliceStatus_ScheduledToLoad;
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175 std::string sliceKeyId = instanceId + ":" + boost::lexical_cast<std::string>(frame);
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176
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177 LOG(WARNING) << "Will preload: " << sliceKeyId;
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178
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179 cachedSlices_[sliceKeyId] = boost::shared_ptr<CachedSlice>(cachedSlice);
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180
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181 std::auto_ptr<ILayerSource> layerSource(new OrthancFrameLayerSource(IObserver::broker_, orthancApiClient_));
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182
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183 dynamic_cast<OrthancFrameLayerSource*>(layerSource.get())->SetImageQuality(imageQuality_);
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184 layerSource->RegisterObserverCallback(new Callable<SmartLoader, ILayerSource::GeometryReadyMessage>(*this, &SmartLoader::OnLayerGeometryReady));
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185 layerSource->RegisterObserverCallback(new Callable<SmartLoader, ILayerSource::ImageReadyMessage>(*this, &SmartLoader::OnImageReady));
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186 layerSource->RegisterObserverCallback(new Callable<SmartLoader, ILayerSource::LayerReadyMessage>(*this, &SmartLoader::OnLayerReady));
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187 dynamic_cast<OrthancFrameLayerSource*>(layerSource.get())->LoadFrame(instanceId, frame);
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188
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189 // keep a ref to the LayerSource until the slice is fully loaded and saved to cache
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190 preloadingInstances_[sliceKeyId] = boost::shared_ptr<ILayerSource>(layerSource.release());
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191 }
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192
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193
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194 // void PreloadStudy(const std::string studyId)
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195 // {
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196 // /* TODO */
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197 // }
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198
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199 // void PreloadSeries(const std::string seriesId)
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200 // {
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201 // /* TODO */
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202 // }
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203
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204
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205 void SmartLoader::OnLayerGeometryReady(const ILayerSource::GeometryReadyMessage& message)
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206 {
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207 OrthancFrameLayerSource& source = dynamic_cast<OrthancFrameLayerSource&>(message.GetOrigin());
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208
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209 // save/replace the slice in cache
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210 const Slice& slice = source.GetSlice(0); // TODO handle GetSliceCount()
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211 std::string sliceKeyId = (slice.GetOrthancInstanceId() + ":" +
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212 boost::lexical_cast<std::string>(slice.GetFrame()));
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213
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214 LOG(WARNING) << "Geometry ready: " << sliceKeyId;
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215
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216 boost::shared_ptr<CachedSlice> cachedSlice(new CachedSlice(IObserver::broker_));
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217 cachedSlice->slice_.reset(slice.Clone());
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218 cachedSlice->effectiveQuality_ = source.GetImageQuality();
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219 cachedSlice->status_ = CachedSliceStatus_GeometryLoaded;
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220
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221 cachedSlices_[sliceKeyId] = boost::shared_ptr<CachedSlice>(cachedSlice);
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222
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223 // re-emit original Layer message to observers
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224 EmitMessage(message);
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225 }
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226
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227
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228 void SmartLoader::OnImageReady(const ILayerSource::ImageReadyMessage& message)
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229 {
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230 OrthancFrameLayerSource& source = dynamic_cast<OrthancFrameLayerSource&>(message.GetOrigin());
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231
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232 // save/replace the slice in cache
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233 const Slice& slice = source.GetSlice(0); // TODO handle GetSliceCount() ?
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234 std::string sliceKeyId = (slice.GetOrthancInstanceId() + ":" +
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235 boost::lexical_cast<std::string>(slice.GetFrame()));
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236
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237 LOG(WARNING) << "Image ready: " << sliceKeyId;
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238
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239 boost::shared_ptr<CachedSlice> cachedSlice(new CachedSlice(IObserver::broker_));
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240 cachedSlice->image_.reset(Orthanc::Image::Clone(message.GetImage()));
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241 cachedSlice->effectiveQuality_ = message.GetImageQuality();
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242 cachedSlice->slice_.reset(message.GetSlice().Clone());
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243 cachedSlice->status_ = CachedSliceStatus_ImageLoaded;
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244
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245 cachedSlices_[sliceKeyId] = cachedSlice;
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246
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247 // re-emit original Layer message to observers
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248 EmitMessage(message);
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249 }
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250
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251
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252 void SmartLoader::OnLayerReady(const ILayerSource::LayerReadyMessage& message)
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253 {
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254 OrthancFrameLayerSource& source = dynamic_cast<OrthancFrameLayerSource&>(message.GetOrigin());
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255 const Slice& slice = source.GetSlice(0); // TODO handle GetSliceCount() ?
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256 std::string sliceKeyId = (slice.GetOrthancInstanceId() + ":" +
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257 boost::lexical_cast<std::string>(slice.GetFrame()));
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258
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259 LOG(WARNING) << "Layer ready: " << sliceKeyId;
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260
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261 // 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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262 if (preloadingInstances_.find(sliceKeyId) != preloadingInstances_.end())
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263 {
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264 preloadingInstances_.erase(sliceKeyId);
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265 }
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266
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267 // re-emit original Layer message to observers
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268 EmitMessage(message);
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269 }
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270 }