annotate OrthancStone/Sources/Loaders/SeriesThumbnailsLoader.h @ 1665:f62f685e0eb2

avoid loading instance metadata on RTSTRUCT to avoid JSON parsing that freezes the browser
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 19 Nov 2020 15:39:30 +0100
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children 76c590a62755
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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 Lesser 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 * Lesser 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 Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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22
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23 #pragma once
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24
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25 #include "../OrthancStone.h"
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27 #if !defined(ORTHANC_ENABLE_DCMTK)
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28 # error Macro ORTHANC_ENABLE_DCMTK must be defined
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29 #endif
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31
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32 #include "../Oracle/GetOrthancImageCommand.h"
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33 #include "../Oracle/HttpCommand.h"
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34 #include "../Oracle/OracleCommandExceptionMessage.h"
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35 #include "../Oracle/OrthancRestApiCommand.h"
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36 #include "DicomSource.h"
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37 #include "ILoaderFactory.h"
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38 #include "OracleScheduler.h"
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39
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40
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41 namespace OrthancStone
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42 {
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43 class SeriesThumbnailsLoader :
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44 public IObservable,
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45 public ObserverBase<SeriesThumbnailsLoader>
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46 {
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47 private:
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48 class Thumbnail : public boost::noncopyable
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49 {
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50 private:
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51 SeriesThumbnailType type_;
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52 std::string image_;
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53 std::string mime_;
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54
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55 public:
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56 Thumbnail(const std::string& image,
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57 const std::string& mime);
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58
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59 explicit Thumbnail(SeriesThumbnailType type);
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60
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61 SeriesThumbnailType GetType() const
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62 {
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63 return type_;
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64 }
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65
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66 const std::string& GetImage() const
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67 {
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68 return image_;
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69 }
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70
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71 const std::string& GetMime() const
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72 {
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73 return mime_;
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74 }
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75 };
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77 public:
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78 class SuccessMessage : public OriginMessage<SeriesThumbnailsLoader>
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79 {
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80 ORTHANC_STONE_MESSAGE(__FILE__, __LINE__);
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81
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82 private:
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83 const DicomSource& source_;
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84 const std::string& studyInstanceUid_;
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85 const std::string& seriesInstanceUid_;
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86 const Thumbnail& thumbnail_;
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87
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88 public:
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89 SuccessMessage(const SeriesThumbnailsLoader& origin,
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90 const DicomSource& source,
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91 const std::string& studyInstanceUid,
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92 const std::string& seriesInstanceUid,
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93 const Thumbnail& thumbnail) :
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94 OriginMessage(origin),
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95 source_(source),
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96 studyInstanceUid_(studyInstanceUid),
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97 seriesInstanceUid_(seriesInstanceUid),
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98 thumbnail_(thumbnail)
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99 {
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100 }
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101
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102 const DicomSource& GetDicomSource() const
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103 {
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104 return source_;
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105 }
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106
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107 SeriesThumbnailType GetType() const
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108 {
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109 return thumbnail_.GetType();
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110 }
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111
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112 const std::string& GetStudyInstanceUid() const
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113 {
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114 return studyInstanceUid_;
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115 }
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116
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117 const std::string& GetSeriesInstanceUid() const
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118 {
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119 return seriesInstanceUid_;
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120 }
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121
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122 const std::string& GetEncodedImage() const
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123 {
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124 return thumbnail_.GetImage();
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125 }
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126
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127 const std::string& GetMime() const
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128 {
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129 return thumbnail_.GetMime();
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130 }
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131
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132 Orthanc::ImageAccessor* DecodeImage() const;
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133 };
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134
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135 private:
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136 class Handler;
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137 class DicomWebSopClassHandler;
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138 class DicomWebThumbnailHandler;
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139 class ThumbnailInformation;
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140 class OrthancSopClassHandler;
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141 class SelectOrthancInstanceHandler;
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142
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143 #if ORTHANC_ENABLE_DCMTK == 1
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144 class SelectDicomWebInstanceHandler;
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145 #endif
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146
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147 // Maps a "Series Instance UID" to a thumbnail
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148 typedef std::map<std::string, Thumbnail*> Thumbnails;
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149
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150 ILoadersContext& context_;
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151 Thumbnails thumbnails_;
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152 int priority_;
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153 unsigned int width_;
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154 unsigned int height_;
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155 std::set<std::string> scheduledSeries_;
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156
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157 void AcquireThumbnail(const DicomSource& source,
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158 const std::string& studyInstanceUid,
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159 const std::string& seriesInstanceUid,
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160 Thumbnail* thumbnail /* takes ownership */);
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161
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162 void Schedule(IOracleCommand* command);
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163
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164 void Handle(const HttpCommand::SuccessMessage& message);
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165
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166 void Handle(const OrthancRestApiCommand::SuccessMessage& message);
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167
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168 void Handle(const GetOrthancImageCommand::SuccessMessage& message);
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169
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170 #if ORTHANC_ENABLE_DCMTK == 1
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171 void Handle(const ParseDicomSuccessMessage& message);
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172 #endif
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173
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174 void Handle(const OracleCommandExceptionMessage& message);
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175
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176 SeriesThumbnailsLoader(ILoadersContext& context,
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177 int priority);
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178
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179 public:
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180 class Factory : public ILoaderFactory
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181 {
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182 private:
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183 int priority_;
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184
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185 public:
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186 Factory() :
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187 priority_(0)
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188 {
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189 }
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190
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191 void SetPriority(int priority)
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192 {
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193 priority_ = priority;
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194 }
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195
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196 virtual boost::shared_ptr<IObserver> Create(ILoadersContext::ILock& context)
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197 {
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198 return SeriesThumbnailsLoader::Create(context, priority_);
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199 }
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200 };
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201
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202
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203 virtual ~SeriesThumbnailsLoader()
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204 {
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205 Clear();
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206 }
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207
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208
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209 static boost::shared_ptr<SeriesThumbnailsLoader> Create(const ILoadersContext::ILock& context,
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210 int priority);
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211
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212 void SetThumbnailSize(unsigned int width,
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213 unsigned int height);
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214
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215 void Clear();
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216
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217 SeriesThumbnailType GetSeriesThumbnail(std::string& image,
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218 std::string& mime,
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219 const std::string& seriesInstanceUid) const;
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220
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221 void ScheduleLoadThumbnail(const DicomSource& source,
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222 const std::string& patientId,
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223 const std::string& studyInstanceUid,
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224 const std::string& seriesInstanceUid);
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225
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226 bool IsScheduledSeries(const std::string& seriesInstanceUid) const
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227 {
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228 return scheduledSeries_.find(seriesInstanceUid) != scheduledSeries_.end();
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229 }
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230 };
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231 }