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annotate OrthancCppClient/Instance.cpp @ 797:37adac56017a

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ImageAccessor abstraction
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 06 May 2014 12:47:26 +0200
parents d380222b4c2a
children a811bdf8b8eb
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
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4 * Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #include "Instance.h"
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34
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35 #include "OrthancConnection.h"
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36
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37 #include <boost/lexical_cast.hpp>
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38
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39 namespace OrthancClient
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40 {
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41 void Instance::DownloadImage()
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42 {
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43 if (reader_.get() == NULL)
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44 {
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45 const char* suffix;
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46 switch (mode_)
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47 {
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48 case Orthanc::ImageExtractionMode_Preview:
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49 suffix = "preview";
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50 break;
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51
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52 case Orthanc::ImageExtractionMode_UInt8:
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53 suffix = "image-uint8";
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54 break;
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55
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56 case Orthanc::ImageExtractionMode_UInt16:
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57 suffix = "image-uint16";
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58 break;
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59
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60 case Orthanc::ImageExtractionMode_Int16:
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61 suffix = "image-int16";
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62 break;
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63
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64 default:
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65 throw OrthancClientException(Orthanc::ErrorCode_NotImplemented);
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66 }
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67
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68 Orthanc::HttpClient client(connection_.GetHttpClient());
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69 client.SetUrl(std::string(connection_.GetOrthancUrl()) + "/instances/" + id_ + "/" + suffix);
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70 std::string png;
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71
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72 if (!client.Apply(png))
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73 {
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74 throw OrthancClientException(Orthanc::ErrorCode_NotImplemented);
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75 }
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76
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77 reader_.reset(new Orthanc::PngReader);
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78 reader_->ReadFromMemory(png);
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79 }
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80 }
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81
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82 void Instance::DownloadDicom()
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83 {
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84 if (dicom_.get() == NULL)
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85 {
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86 Orthanc::HttpClient client(connection_.GetHttpClient());
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87 client.SetUrl(std::string(connection_.GetOrthancUrl()) + "/instances/" + id_ + "/file");
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88
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89 dicom_.reset(new std::string);
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90
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91 if (!client.Apply(*dicom_))
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92 {
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93 throw OrthancClientException(Orthanc::ErrorCode_NetworkProtocol);
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94 }
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95 }
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96 }
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97
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98 Instance::Instance(const OrthancConnection& connection,
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99 const char* id) :
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100 connection_(connection),
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101 id_(id),
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102 mode_(Orthanc::ImageExtractionMode_Int16)
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103 {
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104 Orthanc::HttpClient client(connection_.GetHttpClient());
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105
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106 client.SetUrl(std::string(connection_.GetOrthancUrl()) + "/instances/" + id_ + "/simplified-tags");
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107 Json::Value v;
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108 if (!client.Apply(tags_))
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109 {
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110 throw OrthancClientException(Orthanc::ErrorCode_NetworkProtocol);
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111 }
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112 }
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113
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114 const char* Instance::GetTagAsString(const char* tag) const
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115 {
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116 if (tags_.isMember(tag))
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117 {
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118 return tags_[tag].asCString();
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119 }
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120 else
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121 {
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122 throw OrthancClientException(Orthanc::ErrorCode_InexistentItem);
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123 }
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124 }
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125
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126 float Instance::GetTagAsFloat(const char* tag) const
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127 {
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128 std::string value = GetTagAsString(tag);
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129
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130 try
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131 {
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132 return boost::lexical_cast<float>(value);
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133 }
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134 catch (boost::bad_lexical_cast)
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135 {
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136 throw OrthancClientException(Orthanc::ErrorCode_BadFileFormat);
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137 }
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138 }
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140 int Instance::GetTagAsInt(const char* tag) const
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141 {
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142 std::string value = GetTagAsString(tag);
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143
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144 try
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145 {
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146 return boost::lexical_cast<int>(value);
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147 }
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148 catch (boost::bad_lexical_cast)
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149 {
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150 throw OrthancClientException(Orthanc::ErrorCode_BadFileFormat);
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151 }
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152 }
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153
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154 unsigned int Instance::GetWidth()
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155 {
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156 DownloadImage();
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157 return reader_->GetWidth();
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158 }
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159
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160 unsigned int Instance::GetHeight()
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161 {
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162 DownloadImage();
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163 return reader_->GetHeight();
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164 }
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165
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166 unsigned int Instance::GetPitch()
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167 {
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168 DownloadImage();
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169 return reader_->GetPitch();
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170 }
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171
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172 Orthanc::PixelFormat Instance::GetPixelFormat()
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173 {
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174 DownloadImage();
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175 return reader_->GetFormat();
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176 }
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177
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178 const void* Instance::GetBuffer()
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179 {
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180 DownloadImage();
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181 return reader_->GetConstBuffer();
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182 }
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183
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184 const void* Instance::GetBuffer(unsigned int y)
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185 {
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186 DownloadImage();
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187 return reader_->GetConstRow(y);
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188 }
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189
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190 void Instance::DiscardImage()
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191 {
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192 reader_.reset();
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193 }
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194
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195 void Instance::DiscardDicom()
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196 {
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197 dicom_.reset();
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198 }
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199
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200
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201 void Instance::SetImageExtractionMode(Orthanc::ImageExtractionMode mode)
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202 {
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203 if (mode_ == mode)
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204 {
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205 return;
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206 }
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207
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208 DiscardImage();
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209 mode_ = mode;
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210 }
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211
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212
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213 void Instance::SplitVectorOfFloats(std::vector<float>& target,
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214 const char* tag)
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215 {
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216 const std::string value = GetTagAsString(tag);
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217
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218 target.clear();
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219
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220 try
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221 {
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222 std::string tmp;
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223 for (size_t i = 0; i < value.size(); i++)
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224 {
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225 if (value[i] == '\\')
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226 {
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227 target.push_back(boost::lexical_cast<float>(tmp));
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228 tmp.clear();
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229 }
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230 else
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231 {
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232 tmp.push_back(value[i]);
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233 }
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234 }
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235
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236 target.push_back(boost::lexical_cast<float>(tmp));
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237 }
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238 catch (boost::bad_lexical_cast)
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239 {
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240 // Unable to parse the Image Orientation Patient.
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241 throw OrthancClientException(Orthanc::ErrorCode_BadFileFormat);
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242 }
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243 }
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244
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245
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246 const uint64_t Instance::GetDicomSize()
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247 {
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248 DownloadDicom();
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249 assert(dicom_.get() != NULL);
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250 return dicom_->size();
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251 }
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252
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253 const void* Instance::GetDicom()
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254 {
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255 DownloadDicom();
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256 assert(dicom_.get() != NULL);
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257
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258 if (dicom_->size() == 0)
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259 {
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260 return NULL;
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261 }
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262 else
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263 {
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264 return &((*dicom_) [0]);
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265 }
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266 }
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267
728
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268
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269 void Instance::LoadTagContent(const char* path)
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270 {
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271 Orthanc::HttpClient client(connection_.GetHttpClient());
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272 client.SetUrl(std::string(connection_.GetOrthancUrl()) + "/instances/" + id_ + "/content/" + path);
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273
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274 if (!client.Apply(content_))
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275 {
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276 throw OrthancClientException(Orthanc::ErrorCode_UnknownResource);
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277 }
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278 }
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279
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280
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281 const char* Instance::GetLoadedTagContent() const
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282 {
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283 return content_.c_str();
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284 }
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285 }