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annotate Framework/Layers/OrthancFrameLayerSource.cpp @ 65:885932a893de wasm

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OrthancFrameLayerSource
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 16 May 2017 22:12:41 +0200
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children 298f375dcb68
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65
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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 Osimis, 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 "OrthancFrameLayerSource.h"
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23
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24 #include "FrameRenderer.h"
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25 #include "../../Resources/Orthanc/Core/Images/PngReader.h"
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26 #include "../../Resources/Orthanc/Core/Logging.h"
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27 #include "../../Resources/Orthanc/Core/OrthancException.h"
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28 #include "../Toolbox/DicomFrameConverter.h"
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29
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30 #include <boost/lexical_cast.hpp>
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31
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32
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33 namespace OrthancStone
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34 {
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35 class OrthancFrameLayerSource::Operation : public Orthanc::IDynamicObject
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36 {
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37 private:
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38 Content content_;
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39 SliceGeometry viewportSlice_;
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40
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41 public:
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42 Operation(Content content) : content_(content)
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43 {
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44 }
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45
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46 void SetViewportSlice(const SliceGeometry& slice)
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47 {
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48 viewportSlice_ = slice;
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49 }
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50
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51 const SliceGeometry& GetViewportSlice() const
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52 {
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53 return viewportSlice_;
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54 }
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55
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56 Content GetContent() const
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57 {
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58 return content_;
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59 }
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60 };
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61
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62
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63 OrthancFrameLayerSource::OrthancFrameLayerSource(IWebService& orthanc,
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64 const std::string& instanceId,
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65 unsigned int frame) :
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66 orthanc_(orthanc),
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67 instanceId_(instanceId),
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68 frame_(frame)
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69 {
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70 orthanc_.ScheduleGetRequest(*this,
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71 "/instances/" + instanceId + "/tags",
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72 new Operation(Content_Tags));
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73 }
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74
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75
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76 void OrthancFrameLayerSource::SetObserver(IObserver& observer)
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77 {
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78 LayerSourceBase::SetObserver(observer);
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79
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80 if (dataset_.get() != NULL)
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81 {
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82 NotifySourceChange();
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83 }
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84 }
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85
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86 void OrthancFrameLayerSource::NotifyError(const std::string& uri,
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87 Orthanc::IDynamicObject* payload)
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88 {
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89 LOG(ERROR) << "Cannot download " << uri;
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90 }
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91
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92 void OrthancFrameLayerSource::NotifySuccess(const std::string& uri,
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93 const void* answer,
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94 size_t answerSize,
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95 Orthanc::IDynamicObject* payload)
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96 {
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97 std::auto_ptr<Operation> operation(reinterpret_cast<Operation*>(payload));
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98
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99 if (operation.get() == NULL)
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100 {
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101 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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102 }
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103 else if (operation->GetContent() == Content_Tags)
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104 {
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105 dataset_.reset(new OrthancPlugins::FullOrthancDataset(answer, answerSize));
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106
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107 DicomFrameConverter converter;
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108 converter.ReadParameters(*dataset_);
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109 format_ = converter.GetExpectedPixelFormat();
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110
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111 NotifySourceChange();
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112 }
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113 else if (operation->GetContent() == Content_Frame)
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114 {
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115 std::auto_ptr<Orthanc::PngReader> image(new Orthanc::PngReader);
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116 image->ReadFromMemory(answer, answerSize);
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117
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118 if (format_ == Orthanc::PixelFormat_SignedGrayscale16)
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119 {
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120 if (image->GetFormat() == Orthanc::PixelFormat_Grayscale16)
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121 {
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122 image->SetFormat(Orthanc::PixelFormat_SignedGrayscale16);
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123 }
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124 else
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125 {
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126 NotifyLayerReady(NULL, *this, operation->GetViewportSlice());
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127 }
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128 }
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129
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130 SliceGeometry frameSlice(*dataset_);
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131 NotifyLayerReady(FrameRenderer::CreateRenderer(image.release(),
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132 operation->GetViewportSlice(),
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133 frameSlice, *dataset_, 1, 1, true),
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134 *this, operation->GetViewportSlice());
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135 }
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136 else
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137 {
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138 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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139 }
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140 }
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141
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142
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143 bool OrthancFrameLayerSource::GetExtent(double& x1,
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144 double& y1,
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145 double& x2,
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146 double& y2,
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147 const SliceGeometry& viewportSlice /* ignored */)
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148 {
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149 if (dataset_.get() == NULL)
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150 {
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151 return false;
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152 }
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153 else
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154 {
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155 // Assume that PixelSpacingX == PixelSpacingY == 1
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156
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157 OrthancPlugins::DicomDatasetReader reader(*dataset_);
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158
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159 unsigned int width, height;
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160
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161 if (!reader.GetUnsignedIntegerValue(width, OrthancPlugins::DICOM_TAG_COLUMNS) ||
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162 !reader.GetUnsignedIntegerValue(height, OrthancPlugins::DICOM_TAG_ROWS))
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163 {
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164 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat);
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165 }
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166
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167 x1 = 0;
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168 y1 = 0;
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169 x2 = static_cast<double>(width);
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170 y2 = static_cast<double>(height);
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171
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172 return true;
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173 }
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174 }
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175
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176
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177 void OrthancFrameLayerSource::ScheduleLayerCreation(const SliceGeometry& viewportSlice)
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178 {
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179 if (dataset_.get() == NULL)
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180 {
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181 NotifyLayerReady(NULL, *this, viewportSlice);
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182 }
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183 else
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184 {
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185 std::string uri = ("/instances/" + instanceId_ + "/frames/" +
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186 boost::lexical_cast<std::string>(frame_));
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187
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188 std::string compressed;
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189
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190 switch (format_)
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191 {
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192 case Orthanc::PixelFormat_RGB24:
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193 uri += "/preview";
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194 break;
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195
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196 case Orthanc::PixelFormat_Grayscale16:
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197 uri += "/image-uint16";
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198 break;
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199
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200 case Orthanc::PixelFormat_SignedGrayscale16:
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201 uri += "/image-int16";
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202 break;
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203
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204 default:
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205 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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206 }
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207
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208 std::auto_ptr<Operation> operation(new Operation(Content_Frame));
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209 operation->SetViewportSlice(viewportSlice);
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210 orthanc_.ScheduleGetRequest(*this, uri, operation.release());
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211 }
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212 }
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213 }