Mercurial > hg > orthanc-wsi

annotate ViewerPlugin/Plugin.cpp @ 277:ac1508b438b1 iiif

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support of "Accept" header in /wsi/tiles/{id}/{z}/{x}/{y}
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 12 Jul 2023 16:14:19 +0200
parents ef8a673b5fb9
children 7020852a8fa9
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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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) 2017-2023 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2023 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 "../Framework/PrecompiledHeadersWSI.h"
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24
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25 #include "DicomPyramidCache.h"
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26 #include "IIIF.h"
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27 #include "RawTile.h"
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28
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29 #include <Compatibility.h> // For std::unique_ptr
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30 #include <Images/Image.h>
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31 #include <Images/ImageProcessing.h>
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32 #include <Logging.h>
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33 #include <OrthancException.h>
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34 #include <SystemToolbox.h>
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35
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36 #include "../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h"
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37
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38 #include <EmbeddedResources.h>
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39
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40 #include <cassert>
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41
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42 static void AnswerSparseTile(OrthancPluginRestOutput* output,
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43 unsigned int tileWidth,
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44 unsigned int tileHeight)
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45 {
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46 Orthanc::Image tile(Orthanc::PixelFormat_RGB24, tileWidth, tileHeight, false);
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47
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48 // Black (TODO parameter)
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49 uint8_t red = 0;
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50 uint8_t green = 0;
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51 uint8_t blue = 0;
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52 Orthanc::ImageProcessing::Set(tile, red, green, blue, 255);
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53
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54 // TODO Cache the tile
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55 OrthancPluginCompressAndAnswerPngImage(OrthancPlugins::GetGlobalContext(),
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56 output, OrthancPluginPixelFormat_RGB24,
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57 tile.GetWidth(), tile.GetHeight(),
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58 tile.GetPitch(), tile.GetBuffer());
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59 }
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61
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62 static bool DisplayPerformanceWarning()
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63 {
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64 (void) DisplayPerformanceWarning; // Disable warning about unused function
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65 OrthancPluginLogWarning(OrthancPlugins::GetGlobalContext(), "Performance warning in whole-slide imaging: "
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66 "Non-release build, runtime debug assertions are turned on");
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67 return true;
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68 }
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71 void ServePyramid(OrthancPluginRestOutput* output,
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72 const char* url,
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73 const OrthancPluginHttpRequest* request)
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74 {
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75 std::string seriesId(request->groups[0]);
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76
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77 char tmp[1024];
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78 sprintf(tmp, "Accessing whole-slide pyramid of series %s", seriesId.c_str());
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79 OrthancPluginLogInfo(OrthancPlugins::GetGlobalContext(), tmp);
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81
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82 OrthancWSI::DicomPyramidCache::Locker locker(seriesId);
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83
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84 unsigned int totalWidth = locker.GetPyramid().GetLevelWidth(0);
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85 unsigned int totalHeight = locker.GetPyramid().GetLevelHeight(0);
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86
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87 Json::Value sizes = Json::arrayValue;
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88 Json::Value resolutions = Json::arrayValue;
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89 Json::Value tilesCount = Json::arrayValue;
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90 Json::Value tilesSizes = Json::arrayValue;
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91 for (unsigned int i = 0; i < locker.GetPyramid().GetLevelCount(); i++)
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92 {
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93 const unsigned int levelWidth = locker.GetPyramid().GetLevelWidth(i);
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94 const unsigned int levelHeight = locker.GetPyramid().GetLevelHeight(i);
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95 const unsigned int tileWidth = locker.GetPyramid().GetTileWidth(i);
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96 const unsigned int tileHeight = locker.GetPyramid().GetTileHeight(i);
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97
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98 resolutions.append(static_cast<float>(totalWidth) / static_cast<float>(levelWidth));
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99
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100 Json::Value s = Json::arrayValue;
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101 s.append(levelWidth);
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102 s.append(levelHeight);
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103 sizes.append(s);
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104
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105 s = Json::arrayValue;
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106 s.append(OrthancWSI::CeilingDivision(levelWidth, tileWidth));
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107 s.append(OrthancWSI::CeilingDivision(levelHeight, tileHeight));
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108 tilesCount.append(s);
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109
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110 s = Json::arrayValue;
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111 s.append(tileWidth);
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112 s.append(tileHeight);
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113 tilesSizes.append(s);
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114 }
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115
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116 Json::Value result;
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117 result["ID"] = seriesId;
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118 result["Resolutions"] = resolutions;
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119 result["Sizes"] = sizes;
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120 result["TilesCount"] = tilesCount;
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121 result["TilesSizes"] = tilesSizes;
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122 result["TotalHeight"] = totalHeight;
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123 result["TotalWidth"] = totalWidth;
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124
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125 std::string s = result.toStyledString();
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126 OrthancPluginAnswerBuffer(OrthancPlugins::GetGlobalContext(), output, s.c_str(), s.size(), "application/json");
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127 }
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128
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129
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130 void ServeTile(OrthancPluginRestOutput* output,
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131 const char* url,
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132 const OrthancPluginHttpRequest* request)
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133 {
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134 std::string seriesId(request->groups[0]);
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135 int level = boost::lexical_cast<int>(request->groups[1]);
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136 int tileY = boost::lexical_cast<int>(request->groups[3]);
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137 int tileX = boost::lexical_cast<int>(request->groups[2]);
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138
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139 char tmp[1024];
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140 sprintf(tmp, "Accessing tile in series %s: (%d,%d) at level %d", seriesId.c_str(), tileX, tileY, level);
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141 OrthancPluginLogInfo(OrthancPlugins::GetGlobalContext(), tmp);
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142
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143 if (level < 0 ||
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144 tileX < 0 ||
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145 tileY < 0)
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146 {
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147 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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148 }
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149
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150 // Retrieve the raw tile from the WSI pyramid
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151 std::unique_ptr<OrthancWSI::RawTile> rawTile;
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152
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153 {
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154 // NB: Don't call "rawTile" while the Locker is around, as
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155 // "Answer()" can be a costly operation.
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156 OrthancWSI::DicomPyramidCache::Locker locker(seriesId);
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157
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158 rawTile.reset(new OrthancWSI::RawTile(locker.GetPyramid(),
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159 static_cast<unsigned int>(level),
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160 static_cast<unsigned int>(tileX),
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161 static_cast<unsigned int>(tileY)));
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162 }
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163
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164 Orthanc::MimeType mime;
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165
276
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166 if (rawTile->GetCompression() == OrthancWSI::ImageCompression_Jpeg)
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167 {
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168 // The tile is already a JPEG image. In such a case, we can
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169 // serve it as such, because any Web browser can handle JPEG.
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170 mime = Orthanc::MimeType_Jpeg;
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171 }
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172 else
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173 {
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174 // This is a lossless frame (coming from JPEG2000 or uncompressed
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175 // DICOM instance), not a DICOM-JPEG instance. Decompress the raw
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176 // tile, then transcode it to PNG to prevent lossy compression and
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177 // to avoid JPEG2000 that is not supported by all the browsers.
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178 mime = Orthanc::MimeType_Png;
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179 }
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180
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181 // Lookup whether a "Accept" HTTP header is present, to overwrite
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182 // the default MIME type
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183 for (uint32_t i = 0; i < request->headersCount; i++)
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184 {
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185 std::string key(request->headersKeys[i]);
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186 Orthanc::Toolbox::ToLowerCase(key);
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187
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188 if (key == "accept")
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189 {
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190 std::vector<std::string> tokens;
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191 Orthanc::Toolbox::TokenizeString(tokens, request->headersValues[i], ',');
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192
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193 bool found = false;
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194
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195 for (size_t j = 0; j < tokens.size(); j++)
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196 {
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197 std::string s = Orthanc::Toolbox::StripSpaces(tokens[j]);
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198
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199 if (s == Orthanc::EnumerationToString(Orthanc::MimeType_Png))
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200 {
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201 mime = Orthanc::MimeType_Png;
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202 found = true;
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203 }
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204 else if (s == Orthanc::EnumerationToString(Orthanc::MimeType_Jpeg))
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205 {
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206 mime = Orthanc::MimeType_Jpeg;
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207 found = true;
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208 }
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209 else if (s == Orthanc::EnumerationToString(Orthanc::MimeType_Jpeg2000))
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210 {
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211 mime = Orthanc::MimeType_Jpeg2000;
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212 found = true;
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213 }
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214 else if (s == "*/*" ||
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215 s == "image/*")
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216 {
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217 found = true;
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218 }
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219 }
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220
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221 if (!found)
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222 {
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223 OrthancPluginSendHttpStatusCode(OrthancPlugins::GetGlobalContext(), output, 406 /* Not acceptable */);
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224 return;
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225 }
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226 }
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227 }
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228
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229 rawTile->Answer(output, mime);
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230 }
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231
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232
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233 OrthancPluginErrorCode OnChangeCallback(OrthancPluginChangeType changeType,
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234 OrthancPluginResourceType resourceType,
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235 const char *resourceId)
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236 {
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237 if (resourceType == OrthancPluginResourceType_Series &&
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238 changeType == OrthancPluginChangeType_NewChildInstance)
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239 {
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240 char tmp[1024];
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241 sprintf(tmp, "New instance has been added to series %s, invalidating it", resourceId);
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242 OrthancPluginLogInfo(OrthancPlugins::GetGlobalContext(), tmp);
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243
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244 OrthancWSI::DicomPyramidCache::GetInstance().Invalidate(resourceId);
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245 }
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246
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247 return OrthancPluginErrorCode_Success;
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248 }
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249
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250
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251
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252 void ServeFile(OrthancPluginRestOutput* output,
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253 const char* url,
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254 const OrthancPluginHttpRequest* request)
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255 {
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256 Orthanc::EmbeddedResources::FileResourceId resource;
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257
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258 std::string f(request->groups[0]);
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259 std::string mime;
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260
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261 if (f == "viewer.html")
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262 {
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263 resource = Orthanc::EmbeddedResources::VIEWER_HTML;
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264 mime = "text/html";
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265 }
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266 else if (f == "viewer.js")
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267 {
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268 resource = Orthanc::EmbeddedResources::VIEWER_JS;
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269 mime = "application/javascript";
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270 }
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271 else if (f == "ol.js")
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272 {
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273 resource = Orthanc::EmbeddedResources::OPENLAYERS_JS;
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274 mime = "application/javascript";
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275 }
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276 else if (f == "ol.css")
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277 {
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278 resource = Orthanc::EmbeddedResources::OPENLAYERS_CSS;
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279 mime = "text/css";
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280 }
262
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281 else if (f == "mirador.html")
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282 {
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283 resource = Orthanc::EmbeddedResources::MIRADOR_HTML;
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284 mime = "text/html";
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285 }
270
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286 else if (f == "openseadragon.html")
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287 {
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288 resource = Orthanc::EmbeddedResources::OPEN_SEADRAGON_HTML;
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289 mime = "text/html";
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290 }
0
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291 else
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292 {
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293 throw Orthanc::OrthancException(Orthanc::ErrorCode_UnknownResource);
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294 }
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295
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296 std::string content;
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297 Orthanc::EmbeddedResources::GetFileResource(content, resource);
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298
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299 OrthancPluginAnswerBuffer(OrthancPlugins::GetGlobalContext(), output, content.c_str(), content.size(), mime.c_str());
0
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300 }
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301
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302
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303 extern "C"
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304 {
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305 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* context)
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306 {
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307 OrthancPlugins::SetGlobalContext(context);
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308 assert(DisplayPerformanceWarning());
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309
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310 /* Check the version of the Orthanc core */
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311 if (OrthancPluginCheckVersion(OrthancPlugins::GetGlobalContext()) == 0)
0
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312 {
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313 char info[1024];
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314 sprintf(info, "Your version of Orthanc (%s) must be above %d.%d.%d to run this plugin",
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315 OrthancPlugins::GetGlobalContext()->orthancVersion,
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316 ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER,
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317 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER,
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318 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER);
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319 OrthancPluginLogError(OrthancPlugins::GetGlobalContext(), info);
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320 return -1;
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321 }
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322
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323 if (!OrthancPlugins::CheckMinimalOrthancVersion(1, 1, 0))
5
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324 {
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325 // We need the "/instances/.../frames/.../raw" URI that was introduced in Orthanc 1.1.0
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326 return -1;
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327 }
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328
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329 #if ORTHANC_FRAMEWORK_VERSION_IS_ABOVE(1, 7, 2)
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330 Orthanc::Logging::InitializePluginContext(context);
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331 #else
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332 Orthanc::Logging::Initialize(context);
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333 #endif
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334
0
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335 // Limit the number of PNG transcoders to the number of available
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336 // hardware threads (e.g. number of CPUs or cores or
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337 // hyperthreading units)
153
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338 unsigned int threads = Orthanc::SystemToolbox::GetHardwareConcurrency();
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339 OrthancWSI::RawTile::InitializeTranscoderSemaphore(threads);
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340
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341 char info[1024];
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342 sprintf(info, "The whole-slide imaging plugin will use at most %u threads to transcode the tiles", threads);
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343 OrthancPluginLogWarning(OrthancPlugins::GetGlobalContext(), info);
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344
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345 OrthancPluginSetDescription(context, "Provides a Web viewer of whole-slide microscopic images within Orthanc.");
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346
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347 OrthancWSI::DicomPyramidCache::InitializeInstance(10 /* Number of pyramids to be cached - TODO parameter */);
256
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348
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349 OrthancPluginRegisterOnChangeCallback(OrthancPlugins::GetGlobalContext(), OnChangeCallback);
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350
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351 OrthancPlugins::RegisterRestCallback<ServeFile>("/wsi/app/(ol.css)", true);
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352 OrthancPlugins::RegisterRestCallback<ServeFile>("/wsi/app/(ol.js)", true);
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353 OrthancPlugins::RegisterRestCallback<ServeFile>("/wsi/app/(viewer.html)", true);
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354 OrthancPlugins::RegisterRestCallback<ServeFile>("/wsi/app/(viewer.js)", true);
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355 OrthancPlugins::RegisterRestCallback<ServePyramid>("/wsi/pyramids/([0-9a-f-]+)", true);
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356 OrthancPlugins::RegisterRestCallback<ServeTile>("/wsi/tiles/([0-9a-f-]+)/([0-9-]+)/([0-9-]+)/([0-9-]+)", true);
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357
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358 OrthancPlugins::OrthancConfiguration mainConfiguration;
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359
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360 OrthancPlugins::OrthancConfiguration wsiConfiguration;
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361 mainConfiguration.GetSection(wsiConfiguration, "WholeSlideImaging");
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362
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363 const bool enableIIIF = wsiConfiguration.GetBooleanValue("EnableIIIF", true);
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364 bool serveMirador = false;
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365 bool serveOpenSeadragon = false;
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366 std::string iiifPublicUrl;
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367
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368 if (enableIIIF)
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369 {
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370 if (!wsiConfiguration.LookupStringValue(iiifPublicUrl, "OrthancPublicURL"))
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371 {
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372 unsigned int port = mainConfiguration.GetUnsignedIntegerValue("HttpPort", 8042);
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373 iiifPublicUrl = "http://localhost:" + boost::lexical_cast<std::string>(port) + "/";
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374 }
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375
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376 if (iiifPublicUrl.empty() ||
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377 iiifPublicUrl[iiifPublicUrl.size() - 1] != '/')
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378 {
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379 iiifPublicUrl += "/";
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380 }
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381
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382 iiifPublicUrl += "wsi/iiif/";
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383
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384 InitializeIIIF(iiifPublicUrl);
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385
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386 serveMirador = wsiConfiguration.GetBooleanValue("ServeMirador", false);
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387 serveOpenSeadragon = wsiConfiguration.GetBooleanValue("ServeOpenSeadragon", false);
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388
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389 bool value;
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390 if (wsiConfiguration.LookupBooleanValue(value, "ForcePowersOfTwoScaleFactors"))
263
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391 {
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392 SetIIIFForcePowersOfTwoScaleFactors(value);
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393 }
275
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394 else
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395 {
275
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396 /**
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397 * By default, compatibility mode is disabled. However, if
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398 * Mirador or OSD are enabled, compatibility mode is
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399 * automatically enabled to enhance user experience, at least
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400 * until issue 2379 of OSD is solved:
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401 * https://github.com/openseadragon/openseadragon/issues/2379
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402 **/
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403 SetIIIFForcePowersOfTwoScaleFactors(serveMirador || serveOpenSeadragon);
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404 }
263
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405 }
275
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406
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407 LOG(WARNING) << "Support of IIIF is " << (enableIIIF ? "enabled" : "disabled") << " in the whole-slide imaging plugin";
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408
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409 if (serveMirador)
263
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410 {
275
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411 OrthancPlugins::RegisterRestCallback<ServeFile>("/wsi/app/(mirador.html)", true);
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412 }
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413
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414 if (serveOpenSeadragon)
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415 {
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416 OrthancPlugins::RegisterRestCallback<ServeFile>("/wsi/app/(openseadragon.html)", true);
261
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417 }
256
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418
262
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419 {
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420 // Extend the default Orthanc Explorer with custom JavaScript for WSI
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421
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422 std::string explorer;
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423 Orthanc::EmbeddedResources::GetFileResource(explorer, Orthanc::EmbeddedResources::ORTHANC_EXPLORER);
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424
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425 std::map<std::string, std::string> dictionary;
275
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426 dictionary["ENABLE_IIIF"] = (enableIIIF ? "true" : "false");
262
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427 dictionary["SERVE_MIRADOR"] = (serveMirador ? "true" : "false");
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428 dictionary["SERVE_OPEN_SEADRAGON"] = (serveOpenSeadragon ? "true" : "false");
262
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429 explorer = Orthanc::Toolbox::SubstituteVariables(explorer, dictionary);
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430
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431 OrthancPluginExtendOrthancExplorer(OrthancPlugins::GetGlobalContext(), explorer.c_str());
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432 }
0
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433
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434 return 0;
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435 }
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436
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437
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438 ORTHANC_PLUGINS_API void OrthancPluginFinalize()
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439 {
261
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440 OrthancWSI::DicomPyramidCache::FinalizeInstance();
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441 OrthancWSI::RawTile::FinalizeTranscoderSemaphore();
0
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442 }
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443
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444
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445 ORTHANC_PLUGINS_API const char* OrthancPluginGetName()
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446 {
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447 return "wsi";
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448 }
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449
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450
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451 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion()
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452 {
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453 return ORTHANC_WSI_VERSION;
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454 }
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455 }