Mercurial > hg > orthanc
annotate OrthancServer/FromDcmtkBridge.cpp @ 286:727a6d766dde
merge
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 13 Dec 2012 14:52:57 +0100 |
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children | 4d7469f72a0b |
rev | line source |
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0 | 1 /** |
62 | 2 * Orthanc - A Lightweight, RESTful DICOM Store |
0 | 3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege, |
4 * Belgium | |
5 * | |
6 * This program is free software: you can redistribute it and/or | |
7 * modify it under the terms of the GNU General Public License as | |
8 * published by the Free Software Foundation, either version 3 of the | |
9 * License, or (at your option) any later version. | |
136 | 10 * |
11 * In addition, as a special exception, the copyright holders of this | |
12 * program give permission to link the code of its release with the | |
13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
14 * that use the same license as the "OpenSSL" library), and distribute | |
15 * the linked executables. You must obey the GNU General Public License | |
16 * in all respects for all of the code used other than "OpenSSL". If you | |
17 * modify file(s) with this exception, you may extend this exception to | |
18 * your version of the file(s), but you are not obligated to do so. If | |
19 * you do not wish to do so, delete this exception statement from your | |
20 * version. If you delete this exception statement from all source files | |
21 * in the program, then also delete it here. | |
0 | 22 * |
23 * This program is distributed in the hope that it will be useful, but | |
24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
26 * General Public License for more details. | |
27 * | |
28 * You should have received a copy of the GNU General Public License | |
29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
30 **/ | |
31 | |
71 | 32 #ifndef NOMINMAX |
33 #define NOMINMAX | |
34 #endif | |
0 | 35 |
36 #include "FromDcmtkBridge.h" | |
37 | |
38 #include "ToDcmtkBridge.h" | |
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39 #include "../Core/Toolbox.h" |
62 | 40 #include "../Core/OrthancException.h" |
0 | 41 #include "../Core/PngWriter.h" |
42 #include "../Core/DicomFormat/DicomString.h" | |
43 #include "../Core/DicomFormat/DicomNullValue.h" | |
79 | 44 #include "../Core/DicomFormat/DicomIntegerPixelAccessor.h" |
0 | 45 |
71 | 46 #include <limits> |
47 | |
0 | 48 #include <boost/lexical_cast.hpp> |
49 | |
50 #include <dcmtk/dcmdata/dcdicent.h> | |
51 #include <dcmtk/dcmdata/dcdict.h> | |
52 #include <dcmtk/dcmdata/dcfilefo.h> | |
53 #include <dcmtk/dcmdata/dcistrmb.h> | |
54 #include <dcmtk/dcmdata/dcvrfd.h> | |
55 #include <dcmtk/dcmdata/dcvrfl.h> | |
56 #include <dcmtk/dcmdata/dcvrsl.h> | |
57 #include <dcmtk/dcmdata/dcvrss.h> | |
58 #include <dcmtk/dcmdata/dcvrul.h> | |
59 #include <dcmtk/dcmdata/dcvrus.h> | |
176 | 60 #include <dcmtk/dcmdata/dcuid.h> |
0 | 61 |
2 | 62 #include <boost/math/special_functions/round.hpp> |
0 | 63 |
62 | 64 namespace Orthanc |
0 | 65 { |
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66 ParsedDicomFile::ParsedDicomFile(const std::string& content) |
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67 { |
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68 DcmInputBufferStream is; |
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69 if (content.size() > 0) |
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70 { |
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71 is.setBuffer(&content[0], content.size()); |
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72 } |
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73 is.setEos(); |
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74 |
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75 file_.reset(new DcmFileFormat); |
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76 if (!file_->read(is).good()) |
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77 { |
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78 throw OrthancException(ErrorCode_BadFileFormat); |
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79 } |
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80 } |
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81 |
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82 |
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83 static void SendPathValueForDictionary(RestApiOutput& output, |
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84 DcmItem& dicom) |
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85 { |
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86 Json::Value v = Json::arrayValue; |
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87 |
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88 for (unsigned long i = 0; i < dicom.card(); i++) |
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89 { |
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90 DcmElement* element = dicom.getElement(i); |
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91 if (element) |
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92 { |
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93 char buf[16]; |
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94 sprintf(buf, "%04x-%04x", element->getTag().getGTag(), element->getTag().getETag()); |
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95 v.append(buf); |
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96 } |
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97 } |
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98 |
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99 output.AnswerJson(v); |
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100 } |
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101 |
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102 static inline uint16_t GetCharValue(char c) |
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103 { |
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104 if (c >= '0' && c <= '9') |
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105 return c - '0'; |
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106 else if (c >= 'a' && c <= 'f') |
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107 return c - 'a' + 10; |
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108 else if (c >= 'A' && c <= 'F') |
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109 return c - 'A' + 10; |
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110 else |
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111 return 0; |
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112 } |
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113 |
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114 static inline uint16_t GetTagValue(const char* c) |
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115 { |
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116 return ((GetCharValue(c[0]) << 12) + |
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117 (GetCharValue(c[1]) << 8) + |
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118 (GetCharValue(c[2]) << 4) + |
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119 GetCharValue(c[3])); |
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120 } |
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121 |
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122 static bool ParseTagAndGroup(DcmTagKey& key, |
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123 const std::string& tag) |
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124 { |
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125 if (tag.size() != 9 || |
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126 !isxdigit(tag[0]) || |
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127 !isxdigit(tag[1]) || |
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128 !isxdigit(tag[2]) || |
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129 !isxdigit(tag[3]) || |
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130 tag[4] != '-' || |
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131 !isxdigit(tag[5]) || |
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132 !isxdigit(tag[6]) || |
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133 !isxdigit(tag[7]) || |
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134 !isxdigit(tag[8])) |
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135 { |
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136 return false; |
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137 } |
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138 |
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139 uint16_t group = GetTagValue(tag.c_str()); |
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140 uint16_t element = GetTagValue(tag.c_str() + 5); |
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141 |
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142 key = DcmTagKey(group, element); |
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143 |
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144 return true; |
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145 } |
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146 |
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147 static void SendPathValueForLeaf(RestApiOutput& output, |
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148 const std::string& tag, |
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149 DcmItem& dicom) |
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150 { |
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151 DcmTagKey k; |
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152 if (!ParseTagAndGroup(k, tag)) |
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153 { |
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154 return; |
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155 } |
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156 |
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157 DcmElement* element = NULL; |
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158 if (dicom.findAndGetElement(k, element).good() && element != NULL) |
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159 { |
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160 if (element->getVR() == EVR_SQ) |
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161 { |
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162 // This element is a sequence |
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163 Json::Value v = Json::arrayValue; |
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164 DcmSequenceOfItems& sequence = dynamic_cast<DcmSequenceOfItems&>(*element); |
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165 |
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166 for (unsigned long i = 0; i < sequence.card(); i++) |
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167 { |
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168 v.append(boost::lexical_cast<std::string>(i)); |
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169 } |
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170 |
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171 output.AnswerJson(v); |
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172 } |
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173 else |
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174 { |
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175 // This element is not a sequence |
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176 std::string buffer; |
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177 buffer.resize(65536); |
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178 Uint32 length = element->getLength(); |
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179 Uint32 offset = 0; |
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180 |
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181 output.GetLowLevelOutput().SendOkHeader("application/octet-stream", true, length, NULL); |
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182 |
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183 while (offset < length) |
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184 { |
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185 Uint32 nbytes; |
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186 if (length - offset < buffer.size()) |
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187 { |
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188 nbytes = length - offset; |
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189 } |
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190 else |
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191 { |
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192 nbytes = buffer.size(); |
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193 } |
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194 |
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195 if (element->getPartialValue(&buffer[0], offset, nbytes).good()) |
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196 { |
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197 output.GetLowLevelOutput().Send(&buffer[0], nbytes); |
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198 offset += nbytes; |
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199 } |
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200 else |
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201 { |
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202 return; |
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203 } |
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204 } |
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205 |
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206 output.MarkLowLevelOutputDone(); |
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207 } |
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208 } |
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209 } |
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210 |
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211 void ParsedDicomFile::SendPathValue(RestApiOutput& output, |
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212 const UriComponents& uri) |
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213 { |
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214 DcmItem* dicom = file_->getDataset(); |
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215 |
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216 // Go down in the tag hierarchy according to the URI |
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217 for (size_t pos = 0; pos < uri.size() / 2; pos++) |
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218 { |
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219 size_t index; |
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220 try |
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221 { |
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222 index = boost::lexical_cast<size_t>(uri[2 * pos + 1]); |
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223 } |
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224 catch (boost::bad_lexical_cast&) |
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225 { |
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226 return; |
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227 } |
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228 |
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229 DcmTagKey k; |
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230 DcmItem *child = NULL; |
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231 if (!ParseTagAndGroup(k, uri[2 * pos]) || |
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232 !dicom->findAndGetSequenceItem(k, child, index).good() || |
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233 child == NULL) |
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234 { |
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235 return; |
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236 } |
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237 |
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238 dicom = child; |
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239 } |
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240 |
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241 // We have reached the end of the URI |
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242 if (uri.size() % 2 == 0) |
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243 { |
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244 SendPathValueForDictionary(output, *dicom); |
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245 } |
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246 else |
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247 { |
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248 SendPathValueForLeaf(output, uri.back(), *dicom); |
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249 } |
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250 } |
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251 |
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252 |
0 | 253 void FromDcmtkBridge::Convert(DicomMap& target, DcmDataset& dataset) |
254 { | |
255 target.Clear(); | |
256 for (unsigned long i = 0; i < dataset.card(); i++) | |
257 { | |
258 DcmElement* element = dataset.getElement(i); | |
259 if (element && element->isLeaf()) | |
260 { | |
261 target.SetValue(element->getTag().getGTag(), | |
262 element->getTag().getETag(), | |
263 ConvertLeafElement(*element)); | |
264 } | |
265 } | |
266 } | |
267 | |
268 | |
269 DicomTag FromDcmtkBridge::GetTag(const DcmElement& element) | |
270 { | |
271 return DicomTag(element.getGTag(), element.getETag()); | |
272 } | |
273 | |
274 | |
275 DicomValue* FromDcmtkBridge::ConvertLeafElement(DcmElement& element) | |
276 { | |
277 if (!element.isLeaf()) | |
278 { | |
62 | 279 throw OrthancException("Only applicable to leaf elements"); |
0 | 280 } |
281 | |
282 if (element.isaString()) | |
283 { | |
284 char *c; | |
285 if (element.getString(c).good() && | |
286 c != NULL) | |
287 { | |
288 std::string s(c); | |
107
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289 std::string utf8 = Toolbox::ConvertToUtf8(s, "ISO-8859-1"); // TODO Parameter? |
0 | 290 return new DicomString(utf8); |
291 } | |
292 else | |
293 { | |
294 return new DicomNullValue; | |
295 } | |
296 } | |
297 | |
298 try | |
299 { | |
300 // http://support.dcmtk.org/docs/dcvr_8h-source.html | |
301 switch (element.getVR()) | |
302 { | |
303 | |
304 /** | |
305 * TODO. | |
306 **/ | |
307 | |
308 case EVR_DS: // decimal string | |
309 case EVR_IS: // integer string | |
310 case EVR_OB: // other byte | |
311 case EVR_OF: // other float | |
312 case EVR_OW: // other word | |
313 case EVR_AS: // age string | |
314 case EVR_AT: // attribute tag | |
315 case EVR_DA: // date string | |
316 case EVR_DT: // date time string | |
317 case EVR_TM: // time string | |
318 case EVR_UN: // unknown value representation | |
319 return new DicomNullValue(); | |
320 | |
321 | |
322 /** | |
323 * String types, should never happen at this point because of | |
324 * "element.isaString()". | |
325 **/ | |
326 | |
327 case EVR_AE: // application entity title | |
328 case EVR_CS: // code string | |
329 case EVR_SH: // short string | |
330 case EVR_LO: // long string | |
331 case EVR_ST: // short text | |
332 case EVR_LT: // long text | |
333 case EVR_UT: // unlimited text | |
334 case EVR_PN: // person name | |
335 case EVR_UI: // unique identifier | |
336 return new DicomNullValue(); | |
337 | |
338 | |
339 /** | |
340 * Numerical types | |
341 **/ | |
342 | |
343 case EVR_SL: // signed long | |
344 { | |
345 Sint32 f; | |
346 if (dynamic_cast<DcmSignedLong&>(element).getSint32(f).good()) | |
347 { | |
348 return new DicomString(boost::lexical_cast<std::string>(f)); | |
349 } | |
350 else | |
351 { | |
352 return new DicomNullValue(); | |
353 } | |
354 } | |
355 | |
356 case EVR_SS: // signed short | |
357 { | |
358 Sint16 f; | |
359 if (dynamic_cast<DcmSignedShort&>(element).getSint16(f).good()) | |
360 { | |
361 return new DicomString(boost::lexical_cast<std::string>(f)); | |
362 } | |
363 else | |
364 { | |
365 return new DicomNullValue(); | |
366 } | |
367 } | |
368 | |
369 case EVR_UL: // unsigned long | |
370 { | |
371 Uint32 f; | |
372 if (dynamic_cast<DcmUnsignedLong&>(element).getUint32(f).good()) | |
373 { | |
374 return new DicomString(boost::lexical_cast<std::string>(f)); | |
375 } | |
376 else | |
377 { | |
378 return new DicomNullValue(); | |
379 } | |
380 } | |
381 | |
382 case EVR_US: // unsigned short | |
383 { | |
384 Uint16 f; | |
385 if (dynamic_cast<DcmUnsignedShort&>(element).getUint16(f).good()) | |
386 { | |
387 return new DicomString(boost::lexical_cast<std::string>(f)); | |
388 } | |
389 else | |
390 { | |
391 return new DicomNullValue(); | |
392 } | |
393 } | |
394 | |
395 case EVR_FL: // float single-precision | |
396 { | |
397 Float32 f; | |
398 if (dynamic_cast<DcmFloatingPointSingle&>(element).getFloat32(f).good()) | |
399 { | |
400 return new DicomString(boost::lexical_cast<std::string>(f)); | |
401 } | |
402 else | |
403 { | |
404 return new DicomNullValue(); | |
405 } | |
406 } | |
407 | |
408 case EVR_FD: // float double-precision | |
409 { | |
410 Float64 f; | |
411 if (dynamic_cast<DcmFloatingPointDouble&>(element).getFloat64(f).good()) | |
412 { | |
413 return new DicomString(boost::lexical_cast<std::string>(f)); | |
414 } | |
415 else | |
416 { | |
417 return new DicomNullValue(); | |
418 } | |
419 } | |
420 | |
421 | |
422 /** | |
423 * Sequence types, should never occur at this point because of | |
424 * "element.isLeaf()". | |
425 **/ | |
426 | |
427 case EVR_SQ: // sequence of items | |
428 return new DicomNullValue; | |
429 | |
430 | |
431 /** | |
432 * Internal to DCMTK. | |
433 **/ | |
434 | |
435 case EVR_ox: // OB or OW depending on context | |
436 case EVR_xs: // SS or US depending on context | |
437 case EVR_lt: // US, SS or OW depending on context, used for LUT Data (thus the name) | |
438 case EVR_na: // na="not applicable", for data which has no VR | |
439 case EVR_up: // up="unsigned pointer", used internally for DICOMDIR suppor | |
440 case EVR_item: // used internally for items | |
441 case EVR_metainfo: // used internally for meta info datasets | |
442 case EVR_dataset: // used internally for datasets | |
443 case EVR_fileFormat: // used internally for DICOM files | |
444 case EVR_dicomDir: // used internally for DICOMDIR objects | |
445 case EVR_dirRecord: // used internally for DICOMDIR records | |
446 case EVR_pixelSQ: // used internally for pixel sequences in a compressed image | |
447 case EVR_pixelItem: // used internally for pixel items in a compressed image | |
448 case EVR_UNKNOWN: // used internally for elements with unknown VR (encoded with 4-byte length field in explicit VR) | |
449 case EVR_PixelData: // used internally for uncompressed pixeld data | |
450 case EVR_OverlayData: // used internally for overlay data | |
451 case EVR_UNKNOWN2B: // used internally for elements with unknown VR with 2-byte length field in explicit VR | |
452 return new DicomNullValue; | |
453 | |
454 | |
455 /** | |
456 * Default case. | |
457 **/ | |
458 | |
459 default: | |
460 return new DicomNullValue; | |
461 } | |
462 } | |
463 catch (boost::bad_lexical_cast) | |
464 { | |
465 return new DicomNullValue; | |
466 } | |
467 } | |
468 | |
469 | |
470 static void StoreElement(Json::Value& target, | |
471 DcmElement& element, | |
472 unsigned int maxStringLength); | |
473 | |
474 static void StoreItem(Json::Value& target, | |
475 DcmItem& item, | |
476 unsigned int maxStringLength) | |
477 { | |
478 target = Json::Value(Json::objectValue); | |
479 | |
480 for (unsigned long i = 0; i < item.card(); i++) | |
481 { | |
482 DcmElement* element = item.getElement(i); | |
483 StoreElement(target, *element, maxStringLength); | |
484 } | |
485 } | |
486 | |
487 | |
488 static void StoreElement(Json::Value& target, | |
489 DcmElement& element, | |
490 unsigned int maxStringLength) | |
491 { | |
492 assert(target.type() == Json::objectValue); | |
493 | |
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494 DicomTag tag(FromDcmtkBridge::GetTag(element)); |
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495 const std::string tagName = FromDcmtkBridge::GetName(tag); |
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496 const std::string formattedTag = tag.Format(); |
0 | 497 |
498 if (element.isLeaf()) | |
499 { | |
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500 Json::Value value(Json::objectValue); |
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501 value["Name"] = tagName; |
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502 |
0 | 503 std::auto_ptr<DicomValue> v(FromDcmtkBridge::ConvertLeafElement(element)); |
504 if (v->IsNull()) | |
505 { | |
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506 value["Type"] = "Null"; |
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507 value["Value"] = Json::nullValue; |
0 | 508 } |
509 else | |
510 { | |
511 std::string s = v->AsString(); | |
512 if (maxStringLength == 0 || | |
513 s.size() <= maxStringLength) | |
514 { | |
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515 value["Type"] = "String"; |
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516 value["Value"] = s; |
0 | 517 } |
518 else | |
519 { | |
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520 value["Type"] = "TooLong"; |
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521 value["Value"] = Json::nullValue; |
0 | 522 } |
523 } | |
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524 |
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525 target[formattedTag] = value; |
0 | 526 } |
527 else | |
528 { | |
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529 Json::Value children(Json::arrayValue); |
0 | 530 |
531 // "All subclasses of DcmElement except for DcmSequenceOfItems | |
532 // are leaf nodes, while DcmSequenceOfItems, DcmItem, DcmDataset | |
533 // etc. are not." The following cast is thus OK. | |
534 DcmSequenceOfItems& sequence = dynamic_cast<DcmSequenceOfItems&>(element); | |
535 | |
536 for (unsigned long i = 0; i < sequence.card(); i++) | |
537 { | |
538 DcmItem* child = sequence.getItem(i); | |
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539 Json::Value& v = children.append(Json::objectValue); |
0 | 540 StoreItem(v, *child, maxStringLength); |
541 } | |
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542 |
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543 target[formattedTag]["Name"] = tagName; |
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544 target[formattedTag]["Type"] = "Sequence"; |
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545 target[formattedTag]["Value"] = children; |
0 | 546 } |
547 } | |
548 | |
549 | |
550 void FromDcmtkBridge::ToJson(Json::Value& root, | |
551 DcmDataset& dataset, | |
552 unsigned int maxStringLength) | |
553 { | |
554 StoreItem(root, dataset, maxStringLength); | |
555 } | |
556 | |
557 | |
558 | |
559 void FromDcmtkBridge::ToJson(Json::Value& target, | |
560 const std::string& path, | |
561 unsigned int maxStringLength) | |
562 { | |
563 DcmFileFormat dicom; | |
564 if (!dicom.loadFile(path.c_str()).good()) | |
565 { | |
62 | 566 throw OrthancException(ErrorCode_BadFileFormat); |
0 | 567 } |
568 else | |
569 { | |
570 FromDcmtkBridge::ToJson(target, *dicom.getDataset(), maxStringLength); | |
571 } | |
572 } | |
573 | |
574 | |
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575 static void ExtractPngImagePreview(std::string& result, |
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576 DicomIntegerPixelAccessor& accessor) |
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577 { |
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578 PngWriter w; |
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579 |
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580 int32_t min, max; |
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581 accessor.GetExtremeValues(min, max); |
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582 |
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583 std::vector<uint8_t> image(accessor.GetWidth() * accessor.GetHeight(), 0); |
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584 if (min != max) |
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585 { |
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586 uint8_t* pixel = &image[0]; |
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587 for (unsigned int y = 0; y < accessor.GetHeight(); y++) |
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588 { |
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589 for (unsigned int x = 0; x < accessor.GetWidth(); x++, pixel++) |
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590 { |
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591 int32_t v = accessor.GetValue(x, y); |
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592 *pixel = static_cast<uint8_t>( |
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593 boost::math::lround(static_cast<float>(v - min) / |
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594 static_cast<float>(max - min) * 255.0f)); |
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595 } |
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596 } |
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597 } |
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598 |
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599 w.WriteToMemory(result, accessor.GetWidth(), accessor.GetHeight(), |
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600 accessor.GetWidth(), PixelFormat_Grayscale8, &image[0]); |
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601 } |
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602 |
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603 |
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604 template <typename T> |
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605 static void ExtractPngImageTruncate(std::string& result, |
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606 DicomIntegerPixelAccessor& accessor, |
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607 PixelFormat format) |
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608 { |
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609 PngWriter w; |
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610 |
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611 std::vector<T> image(accessor.GetWidth() * accessor.GetHeight(), 0); |
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612 T* pixel = &image[0]; |
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613 for (unsigned int y = 0; y < accessor.GetHeight(); y++) |
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614 { |
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615 for (unsigned int x = 0; x < accessor.GetWidth(); x++, pixel++) |
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616 { |
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617 int32_t v = accessor.GetValue(x, y); |
73 | 618 if (v < std::numeric_limits<T>::min()) |
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619 *pixel = std::numeric_limits<T>::min(); |
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620 else if (v > std::numeric_limits<T>::max()) |
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621 *pixel = std::numeric_limits<T>::max(); |
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622 else |
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623 *pixel = static_cast<T>(v); |
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624 } |
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625 } |
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626 |
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627 w.WriteToMemory(result, accessor.GetWidth(), accessor.GetHeight(), |
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628 accessor.GetWidth() * sizeof(T), format, &image[0]); |
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629 } |
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630 |
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631 |
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632 void FromDcmtkBridge::ExtractPngImage(std::string& result, |
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633 DcmDataset& dataset, |
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634 unsigned int frame, |
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635 ImageExtractionMode mode) |
0 | 636 { |
637 // See also: http://support.dcmtk.org/wiki/dcmtk/howto/accessing-compressed-data | |
638 | |
639 std::auto_ptr<DicomIntegerPixelAccessor> accessor; | |
640 | |
641 DicomMap m; | |
642 FromDcmtkBridge::Convert(m, dataset); | |
643 | |
644 DcmElement* e; | |
80 | 645 if (dataset.findAndGetElement(ToDcmtkBridge::Convert(DICOM_TAG_PIXEL_DATA), e).good() && |
0 | 646 e != NULL) |
647 { | |
648 Uint8* pixData = NULL; | |
649 if (e->getUint8Array(pixData) == EC_Normal) | |
650 { | |
651 accessor.reset(new DicomIntegerPixelAccessor(m, pixData, e->getLength())); | |
53
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652 accessor->SetCurrentFrame(frame); |
0 | 653 } |
654 } | |
655 | |
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656 PixelFormat format; |
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657 switch (mode) |
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658 { |
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659 case ImageExtractionMode_Preview: |
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660 case ImageExtractionMode_UInt8: |
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661 format = PixelFormat_Grayscale8; |
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662 break; |
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663 |
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664 case ImageExtractionMode_UInt16: |
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665 format = PixelFormat_Grayscale16; |
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666 break; |
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667 |
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668 default: |
62 | 669 throw OrthancException(ErrorCode_NotImplemented); |
42
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670 } |
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671 |
0 | 672 if (accessor.get() == NULL || |
673 accessor->GetWidth() == 0 || | |
674 accessor->GetHeight() == 0) | |
675 { | |
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676 PngWriter w; |
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677 w.WriteToMemory(result, 0, 0, 0, format, NULL); |
0 | 678 } |
679 else | |
680 { | |
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681 switch (mode) |
0 | 682 { |
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683 case ImageExtractionMode_Preview: |
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684 ExtractPngImagePreview(result, *accessor); |
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685 break; |
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686 |
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687 case ImageExtractionMode_UInt8: |
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688 ExtractPngImageTruncate<uint8_t>(result, *accessor, format); |
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689 break; |
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690 |
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691 case ImageExtractionMode_UInt16: |
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692 ExtractPngImageTruncate<uint16_t>(result, *accessor, format); |
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693 break; |
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694 |
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695 default: |
62 | 696 throw OrthancException(ErrorCode_NotImplemented); |
0 | 697 } |
698 } | |
699 } | |
700 | |
701 | |
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702 void FromDcmtkBridge::ExtractPngImage(std::string& result, |
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703 const std::string& dicomContent, |
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704 unsigned int frame, |
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705 ImageExtractionMode mode) |
0 | 706 { |
707 DcmInputBufferStream is; | |
708 if (dicomContent.size() > 0) | |
709 { | |
710 is.setBuffer(&dicomContent[0], dicomContent.size()); | |
711 } | |
712 is.setEos(); | |
713 | |
714 DcmFileFormat dicom; | |
715 if (dicom.read(is).good()) | |
716 { | |
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717 ExtractPngImage(result, *dicom.getDataset(), frame, mode); |
0 | 718 } |
719 else | |
720 { | |
62 | 721 throw OrthancException(ErrorCode_BadFileFormat); |
0 | 722 } |
723 } | |
724 | |
725 | |
726 | |
727 std::string FromDcmtkBridge::GetName(const DicomTag& t) | |
728 { | |
106 | 729 // Some patches for important tags because of different DICOM |
730 // dictionaries between DCMTK versions | |
731 if (t == DICOM_TAG_PATIENT_NAME) | |
732 return "PatientName"; | |
733 | |
734 if (t == DicomTag(0x0010, 0x0030)) | |
735 return "PatientBirthDate"; | |
736 | |
737 if (t == DicomTag(0x0010, 0x0040)) | |
738 return "PatientSex"; | |
739 | |
740 // End of patches | |
741 | |
0 | 742 DcmTagKey tag(t.GetGroup(), t.GetElement()); |
743 const DcmDataDictionary& dict = dcmDataDict.rdlock(); | |
744 const DcmDictEntry* entry = dict.findEntry(tag, NULL); | |
745 | |
746 std::string s("Unknown"); | |
747 if (entry != NULL) | |
748 { | |
749 s = std::string(entry->getTagName()); | |
750 } | |
751 | |
752 dcmDataDict.unlock(); | |
753 return s; | |
754 } | |
755 | |
756 | |
757 DicomTag FromDcmtkBridge::FindTag(const char* name) | |
758 { | |
759 const DcmDataDictionary& dict = dcmDataDict.rdlock(); | |
760 const DcmDictEntry* entry = dict.findEntry(name); | |
761 | |
762 if (entry == NULL) | |
763 { | |
764 dcmDataDict.unlock(); | |
62 | 765 throw OrthancException("Unknown DICOM tag"); |
0 | 766 } |
767 else | |
768 { | |
769 DcmTagKey key = entry->getKey(); | |
770 DicomTag tag(key.getGroup(), key.getElement()); | |
771 dcmDataDict.unlock(); | |
772 return tag; | |
773 } | |
774 } | |
775 | |
776 | |
777 void FromDcmtkBridge::Print(FILE* fp, const DicomMap& m) | |
778 { | |
779 for (DicomMap::Map::const_iterator | |
780 it = m.map_.begin(); it != m.map_.end(); it++) | |
781 { | |
782 DicomTag t = it->first; | |
783 std::string s = it->second->AsString(); | |
784 printf("0x%04x 0x%04x (%s) [%s]\n", t.GetGroup(), t.GetElement(), GetName(t).c_str(), s.c_str()); | |
785 } | |
786 } | |
787 | |
788 | |
789 void FromDcmtkBridge::ToJson(Json::Value& result, | |
790 const DicomMap& values) | |
791 { | |
792 if (result.type() != Json::objectValue) | |
793 { | |
62 | 794 throw OrthancException(ErrorCode_BadParameterType); |
0 | 795 } |
796 | |
797 result.clear(); | |
798 | |
799 for (DicomMap::Map::const_iterator | |
800 it = values.map_.begin(); it != values.map_.end(); it++) | |
801 { | |
802 result[GetName(it->first)] = it->second->AsString(); | |
803 } | |
804 } | |
176 | 805 |
806 | |
807 std::string FromDcmtkBridge::GenerateUniqueIdentifier(DicomRootLevel level) | |
808 { | |
809 char uid[100]; | |
810 | |
811 switch (level) | |
812 { | |
813 case DicomRootLevel_Instance: | |
814 return dcmGenerateUniqueIdentifier(uid, SITE_INSTANCE_UID_ROOT); | |
815 | |
816 case DicomRootLevel_Series: | |
817 return dcmGenerateUniqueIdentifier(uid, SITE_SERIES_UID_ROOT); | |
818 | |
819 case DicomRootLevel_Study: | |
820 return dcmGenerateUniqueIdentifier(uid, SITE_STUDY_UID_ROOT); | |
821 | |
822 default: | |
823 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
824 } | |
825 } | |
826 | |
0 | 827 } |