Mercurial > hg > orthanc-stone

annotate Applications/Samples/WebAssembly/SingleFrameViewer/SingleFrameViewer.cpp @ 1538:d1806b4e4839

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moving OrthancStone/Samples/ as Applications/Samples/
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 11 Aug 2020 13:24:38 +0200
parents OrthancStone/Samples/WebAssembly/SingleFrameViewer/SingleFrameViewer.cpp@244ad1e4e76a
children 4cfdaf4ef3fe
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rev   line source
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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) 2017-2020 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 "SingleFrameViewerApplication.h"
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23
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24 #include "../../../Sources/Loaders/WebAssemblyLoadersContext.h"
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25 #include "../../../Sources/StoneException.h"
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26 #include "../../../Sources/StoneInitialization.h"
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27
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28 #include <Compatibility.h> // For std::unique_ptr<>
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29 #include <Toolbox.h>
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30
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31 #include <emscripten.h>
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32 #include <emscripten/html5.h>
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33
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34
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35 #define DISPATCH_JAVASCRIPT_EVENT(name) \
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36 EM_ASM( \
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37 const customEvent = document.createEvent("CustomEvent"); \
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38 customEvent.initCustomEvent(name, false, false, undefined); \
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39 window.dispatchEvent(customEvent); \
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40 );
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41
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42 #define EXTERN_CATCH_EXCEPTIONS \
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43 catch (Orthanc::OrthancException& e) \
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44 { \
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45 LOG(ERROR) << "OrthancException: " << e.What(); \
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46 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \
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47 } \
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48 catch (OrthancStone::StoneException& e) \
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49 { \
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50 LOG(ERROR) << "StoneException: " << e.What(); \
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51 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \
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52 } \
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53 catch (std::exception& e) \
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54 { \
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55 LOG(ERROR) << "Runtime error: " << e.what(); \
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56 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \
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57 } \
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58 catch (...) \
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59 { \
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60 LOG(ERROR) << "Native exception"; \
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61 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \
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62 }
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63
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64
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65
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66 namespace OrthancStone
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67 {
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68 }
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69
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70 static std::unique_ptr<OrthancStone::WebAssemblyLoadersContext> context_;
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71 static boost::shared_ptr<OrthancStone::Application> application_;
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72
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73 extern "C"
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74 {
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75 int main(int argc, char const *argv[])
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76 {
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77 try
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78 {
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79 Orthanc::Logging::Initialize();
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80 Orthanc::Logging::EnableInfoLevel(true);
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81 //Orthanc::Logging::EnableTraceLevel(true);
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82 LOG(WARNING) << "Initializing native Stone";
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83
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84 LOG(WARNING) << "Compiled with Emscripten " << __EMSCRIPTEN_major__
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85 << "." << __EMSCRIPTEN_minor__
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86 << "." << __EMSCRIPTEN_tiny__;
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87
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88 LOG(INFO) << "Endianness: " << Orthanc::EnumerationToString(Orthanc::Toolbox::DetectEndianness());
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89 context_.reset(new OrthancStone::WebAssemblyLoadersContext(1, 4, 1));
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90 context_->SetLocalOrthanc("..");
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91 context_->SetDicomCacheSize(128 * 1024 * 1024); // 128MB
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92
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93 DISPATCH_JAVASCRIPT_EVENT("WasmModuleInitialized");
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94 }
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95 EXTERN_CATCH_EXCEPTIONS;
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96
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97 return 0;
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98 }
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99
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100 EMSCRIPTEN_KEEPALIVE
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101 void InitializeViewport(const char* canvasId)
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102 {
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103 try
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104 {
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105 if (context_.get() == NULL)
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106 {
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107 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls,
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108 "The loaders context is not available yet");
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109 }
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110
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111 if (application_.get() != NULL)
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112 {
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113 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls,
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114 "Only one single viewport is available for this application");
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115 }
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116
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117 boost::shared_ptr<OrthancStone::WebGLViewport> viewport(OrthancStone::GetWebGLViewportsRegistry().Add(canvasId));
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118 application_ = OrthancStone::Application::Create(*context_, viewport);
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119
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120 {
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121 OrthancStone::WebGLViewportsRegistry::Accessor accessor(
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122 OrthancStone::GetWebGLViewportsRegistry(), canvasId);
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123
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124 if (accessor.IsValid())
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125 {
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126 accessor.GetViewport().Invalidate();
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127 }
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128 }
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129 }
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130 EXTERN_CATCH_EXCEPTIONS;
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131 }
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132
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133
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134 EMSCRIPTEN_KEEPALIVE
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135 void LoadFromOrthanc(const char* instance,
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136 int frame)
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137 {
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138 try
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139 {
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140 if (application_.get() != NULL)
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141 {
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142 OrthancStone::DicomSource source;
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143 application_->LoadOrthancFrame(source, instance, frame);
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144 }
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145 }
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146 EXTERN_CATCH_EXCEPTIONS;
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147 }
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148
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149
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150 EMSCRIPTEN_KEEPALIVE
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151 void LoadFromDicomWeb(const char* server,
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152 const char* studyInstanceUid,
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153 const char* seriesInstanceUid,
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154 const char* sopInstanceUid,
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155 int frame)
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156 {
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157 try
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158 {
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159 if (application_.get() != NULL)
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160 {
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161 OrthancStone::DicomSource source;
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162 source.SetDicomWebThroughOrthancSource(server);
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163 application_->LoadDicomWebFrame(source, studyInstanceUid, seriesInstanceUid,
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164 sopInstanceUid, frame);
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165 }
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166 }
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167 EXTERN_CATCH_EXCEPTIONS;
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168 }
458ab069f313 Fixed missing file in WASM sample
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169 }