Mercurial > hg > orthanc

annotate Plugins/Samples/GdcmDecoding/OrthancContext.cpp @ 983:80d4f1618b33 plugins

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Sample plugin to replace DCMTK by GDCM when decoding images
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 01 Jul 2014 12:01:58 +0200
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children 501880d76474
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983
80d4f1618b33 Sample plugin to replace DCMTK by GDCM when decoding images
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1 /**
80d4f1618b33 Sample plugin to replace DCMTK by GDCM when decoding images
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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 * Permission is hereby granted, free of charge, to any person
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7 * obtaining a copy of this software and associated documentation
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8 * files (the "Software"), to deal in the Software without
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9 * restriction, including without limitation the rights to use, copy,
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10 * modify, merge, publish, distribute, sublicense, and/or sell copies
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11 * of the Software, and to permit persons to whom the Software is
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12 * furnished to do so, subject to the following conditions:
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13 *
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14 * The above copyright notice and this permission notice shall be
80d4f1618b33 Sample plugin to replace DCMTK by GDCM when decoding images
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15 * included in all copies or substantial portions of the Software.
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16 *
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17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
80d4f1618b33 Sample plugin to replace DCMTK by GDCM when decoding images
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19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
80d4f1618b33 Sample plugin to replace DCMTK by GDCM when decoding images
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20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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21 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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22 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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24 * SOFTWARE.
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25 **/
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26
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27
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28 #include "OrthancContext.h"
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29
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30 #include <stdexcept>
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31
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32
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33 void OrthancContext::Check()
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34 {
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35 if (context_ == NULL)
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36 {
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37 throw std::runtime_error("The Orthanc plugin context is not initialized");
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38 }
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39 }
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40
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41
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42 OrthancContext& OrthancContext::GetInstance()
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43 {
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44 static OrthancContext instance;
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45 return instance;
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46 }
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47
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48
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49 OrthancContext::~OrthancContext()
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50 {
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51 if (context_ != NULL)
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52 {
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53 throw std::runtime_error("The Orthanc plugin was not properly finalized");
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54 }
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55 }
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56
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57
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58 void OrthancContext::ExtractGetArguments(Arguments& arguments,
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59 const OrthancPluginHttpRequest& request)
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60 {
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61 Check();
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62 arguments.clear();
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63
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64 for (uint32_t i = 0; i < request.getCount; i++)
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65 {
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66 arguments[request.getKeys[i]] = request.getValues[i];
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67 }
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68 }
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69
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70
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71 void OrthancContext::LogError(const std::string& s)
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72 {
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73 Check();
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74 OrthancPluginLogError(context_, s.c_str());
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75 }
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76
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77
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78 void OrthancContext::LogWarning(const std::string& s)
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79 {
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80 Check();
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81 OrthancPluginLogWarning(context_, s.c_str());
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82 }
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83
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84
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85 void OrthancContext::LogInfo(const std::string& s)
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86 {
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87 Check();
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88 OrthancPluginLogInfo(context_, s.c_str());
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89 }
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90
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91
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92 void OrthancContext::Register(const std::string& uri,
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93 OrthancPluginRestCallback callback)
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94 {
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95 Check();
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96 OrthancPluginRegisterRestCallback(context_, uri.c_str(), callback);
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97 }
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98
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99
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100 void OrthancContext::GetDicomForInstance(std::string& result,
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101 const std::string& instanceId)
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102 {
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103 Check();
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104 OrthancPluginMemoryBuffer buffer;
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105
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106 if (OrthancPluginGetDicomForInstance(context_, &buffer, instanceId.c_str()))
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107 {
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108 throw std::runtime_error("No DICOM instance with Orthanc ID: " + instanceId);
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109 }
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110
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111 if (buffer.size == 0)
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112 {
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113 result.clear();
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114 }
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115 else
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116 {
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117 result.assign(reinterpret_cast<char*>(buffer.data), buffer.size);
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118 }
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119
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120 OrthancPluginFreeMemoryBuffer(context_, &buffer);
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121 }
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122
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123
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124 void OrthancContext::CompressAndAnswerPngImage(OrthancPluginRestOutput* output,
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125 const Orthanc::ImageAccessor& accessor)
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126 {
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127 Check();
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128
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129 OrthancPluginPixelFormat format;
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130 switch (accessor.GetFormat())
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131 {
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132 case Orthanc::PixelFormat_Grayscale8:
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133 format = OrthancPluginPixelFormat_Grayscale8;
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134 break;
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135
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136 case Orthanc::PixelFormat_Grayscale16:
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137 format = OrthancPluginPixelFormat_Grayscale16;
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138 break;
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139
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140 case Orthanc::PixelFormat_SignedGrayscale16:
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141 format = OrthancPluginPixelFormat_SignedGrayscale16;
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142 break;
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143
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144 case Orthanc::PixelFormat_RGB24:
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145 format = OrthancPluginPixelFormat_RGB24;
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146 break;
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147
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148 case Orthanc::PixelFormat_RGBA32:
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149 format = OrthancPluginPixelFormat_RGBA32;
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150 break;
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151
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152 default:
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153 throw std::runtime_error("Unsupported pixel format");
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154 }
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155
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156 OrthancPluginCompressAndAnswerPngImage(context_, output, format, accessor.GetWidth(),
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157 accessor.GetHeight(), accessor.GetPitch(), accessor.GetConstBuffer());
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158 }