Mercurial > hg > orthanc-stone

annotate Applications/Samples/WebAssembly/SingleFrameViewer/SingleFrameViewer.cpp @ 1956:1e5ba130f041

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move to Orthanc framework 1.11.2
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 27 Oct 2022 10:52:21 +0200
parents 1cfd602de69d
children 07964689cb0b
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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) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Affero General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Affero General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Affero General Public License
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19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 **/
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21
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22
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23 #include "SingleFrameViewerApplication.h"
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24
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25 #include "../../../../OrthancStone/Sources/Platforms/WebAssembly/WebAssemblyLoadersContext.h"
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26 #include "../../../../OrthancStone/Sources/Platforms/WebAssembly/WebGLViewport.h"
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27 #include "../../../../OrthancStone/Sources/Platforms/WebAssembly/WebGLViewportsRegistry.h"
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28 #include "../../../../OrthancStone/Sources/StoneException.h"
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29 #include "../../../../OrthancStone/Sources/StoneInitialization.h"
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30
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31 #include <Compatibility.h> // For std::unique_ptr<>
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32 #include <Toolbox.h>
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33
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34 #include <emscripten.h>
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35 #include <emscripten/html5.h>
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36
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37
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38 #define DISPATCH_JAVASCRIPT_EVENT(name) \
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39 EM_ASM( \
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40 const customEvent = document.createEvent("CustomEvent"); \
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41 customEvent.initCustomEvent(name, false, false, undefined); \
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42 window.dispatchEvent(customEvent); \
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43 );
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44
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45 #define EXTERN_CATCH_EXCEPTIONS \
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46 catch (Orthanc::OrthancException& e) \
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47 { \
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48 LOG(ERROR) << "OrthancException: " << e.What(); \
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49 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \
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50 } \
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51 catch (OrthancStone::StoneException& e) \
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52 { \
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53 LOG(ERROR) << "StoneException: " << e.What(); \
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54 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \
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55 } \
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56 catch (std::exception& e) \
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57 { \
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58 LOG(ERROR) << "Runtime error: " << e.what(); \
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59 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \
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60 } \
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61 catch (...) \
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62 { \
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63 LOG(ERROR) << "Native exception"; \
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64 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \
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65 }
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66
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67
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68
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69 namespace OrthancStone
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70 {
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71 }
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72
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73 static std::unique_ptr<OrthancStone::WebAssemblyLoadersContext> context_;
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74 static boost::shared_ptr<OrthancStone::Application> application_;
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75
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76 extern "C"
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77 {
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78 int main(int argc, char const *argv[])
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79 {
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80 try
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81 {
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82 Orthanc::Logging::Initialize();
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83 Orthanc::Logging::EnableInfoLevel(true);
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84 //Orthanc::Logging::EnableTraceLevel(true);
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85 LOG(WARNING) << "Initializing native Stone";
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86
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87 LOG(WARNING) << "Compiled with Emscripten " << __EMSCRIPTEN_major__
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88 << "." << __EMSCRIPTEN_minor__
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89 << "." << __EMSCRIPTEN_tiny__;
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90
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91 LOG(INFO) << "Endianness: " << Orthanc::EnumerationToString(Orthanc::Toolbox::DetectEndianness());
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92 context_.reset(new OrthancStone::WebAssemblyLoadersContext(1, 4, 1));
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93 context_->SetLocalOrthanc("..");
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94 context_->SetDicomCacheSize(128 * 1024 * 1024); // 128MB
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95
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96 DISPATCH_JAVASCRIPT_EVENT("WasmModuleInitialized");
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97 }
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98 EXTERN_CATCH_EXCEPTIONS;
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99
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100 return 0;
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101 }
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102
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103 EMSCRIPTEN_KEEPALIVE
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104 void InitializeViewport(const char* canvasId)
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105 {
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106 try
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107 {
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108 if (context_.get() == NULL)
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109 {
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110 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls,
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111 "The loaders context is not available yet");
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112 }
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113
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114 if (application_.get() != NULL)
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115 {
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116 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls,
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117 "Only one single viewport is available for this application");
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118 }
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119
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120 boost::shared_ptr<OrthancStone::WebGLViewport> viewport(
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121 OrthancStone::WebGLViewportsRegistry::GetGlobalRegistry().Add(canvasId));
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122 application_ = OrthancStone::Application::Create(*context_, viewport);
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123
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124 {
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125 OrthancStone::WebGLViewportsRegistry::Accessor accessor(
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126 OrthancStone::WebGLViewportsRegistry::GetGlobalRegistry(), canvasId);
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127
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128 if (accessor.IsValid())
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129 {
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130 accessor.GetViewport().Invalidate();
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131 }
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132 }
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133 }
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134 EXTERN_CATCH_EXCEPTIONS;
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135 }
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138 EMSCRIPTEN_KEEPALIVE
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139 void LoadFromOrthanc(const char* instance,
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140 int frame)
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141 {
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142 try
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143 {
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144 if (application_.get() != NULL)
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145 {
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146 OrthancStone::DicomSource source;
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147 application_->LoadOrthancFrame(source, instance, frame);
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148 }
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149 }
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150 EXTERN_CATCH_EXCEPTIONS;
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151 }
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152
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153
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154 EMSCRIPTEN_KEEPALIVE
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155 void LoadFromDicomWeb(const char* server,
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156 const char* studyInstanceUid,
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157 const char* seriesInstanceUid,
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158 const char* sopInstanceUid,
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159 int frame)
1377
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160 {
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161 try
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162 {
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163 if (application_.get() != NULL)
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164 {
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165 OrthancStone::DicomSource source;
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166 source.SetDicomWebThroughOrthancSource(server);
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167 application_->LoadDicomWebFrame(source, studyInstanceUid, seriesInstanceUid,
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168 sopInstanceUid, frame);
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169 }
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170 }
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171 EXTERN_CATCH_EXCEPTIONS;
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172 }
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173 }