Mercurial > hg > orthanc
annotate Core/DicomParsing/IDicomTranscoder.cpp @ 3945:0b3256c3ee14 transcoding
simplified IDicomTranscoder
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 19 May 2020 11:24:00 +0200 |
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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) 2017-2020 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 General Public License as |
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9 * published by the Free Software Foundation, either version 3 of the |
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10 * License, or (at your option) any later version. |
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11 * |
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12 * In addition, as a special exception, the copyright holders of this |
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13 * program give permission to link the code of its release with the |
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it |
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15 * that use the same license as the "OpenSSL" library), and distribute |
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16 * the linked executables. You must obey the GNU General Public License |
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17 * in all respects for all of the code used other than "OpenSSL". If you |
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18 * modify file(s) with this exception, you may extend this exception to |
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19 * your version of the file(s), but you are not obligated to do so. If |
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20 * you do not wish to do so, delete this exception statement from your |
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21 * version. If you delete this exception statement from all source files |
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22 * in the program, then also delete it here. |
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23 * |
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24 * This program is distributed in the hope that it will be useful, but |
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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27 * General Public License for more details. |
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28 * |
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29 * You should have received a copy of the GNU General Public License |
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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31 **/ |
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32 |
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33 |
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34 #include "../PrecompiledHeaders.h" |
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35 #include "IDicomTranscoder.h" |
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36 |
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37 #include "../OrthancException.h" |
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38 #include "FromDcmtkBridge.h" |
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39 #include "ParsedDicomFile.h" |
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40 |
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41 #include <dcmtk/dcmdata/dcfilefo.h> |
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42 |
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43 namespace Orthanc |
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44 { |
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45 void IDicomTranscoder::DicomImage::Parse() |
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46 { |
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47 if (parsed_.get() != NULL) |
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48 { |
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49 // Already parsed |
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50 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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51 } |
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52 else if (buffer_.get() != NULL) |
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53 { |
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54 if (isExternalBuffer_) |
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55 { |
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56 throw OrthancException(ErrorCode_InternalError); |
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57 } |
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58 else |
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59 { |
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60 parsed_.reset(FromDcmtkBridge::LoadFromMemoryBuffer( |
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61 buffer_->empty() ? NULL : buffer_->c_str(), buffer_->size())); |
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62 |
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63 if (parsed_.get() == NULL) |
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64 { |
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65 throw OrthancException(ErrorCode_BadFileFormat); |
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66 } |
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67 } |
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68 } |
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69 else if (isExternalBuffer_) |
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70 { |
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71 parsed_.reset(FromDcmtkBridge::LoadFromMemoryBuffer(externalBuffer_, externalSize_)); |
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72 |
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73 if (parsed_.get() == NULL) |
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74 { |
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75 throw OrthancException(ErrorCode_BadFileFormat); |
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76 } |
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77 } |
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78 else |
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79 { |
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80 // No buffer is available |
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81 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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82 } |
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83 } |
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84 |
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85 |
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86 void IDicomTranscoder::DicomImage::Serialize() |
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87 { |
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88 if (parsed_.get() == NULL || |
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89 buffer_.get() != NULL || |
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90 isExternalBuffer_) |
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91 { |
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92 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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93 } |
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94 else if (parsed_->getDataset() == NULL) |
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95 { |
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96 throw OrthancException(ErrorCode_InternalError); |
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97 } |
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98 else |
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99 { |
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100 buffer_.reset(new std::string); |
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101 FromDcmtkBridge::SaveToMemoryBuffer(*buffer_, *parsed_->getDataset()); |
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102 } |
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103 } |
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104 |
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105 |
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106 IDicomTranscoder::DicomImage::DicomImage() : |
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107 isExternalBuffer_(false) |
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108 { |
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109 } |
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110 |
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111 |
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112 void IDicomTranscoder::DicomImage::Clear() |
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113 { |
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114 parsed_.reset(NULL); |
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115 buffer_.reset(NULL); |
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116 isExternalBuffer_ = false; |
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117 } |
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118 |
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119 |
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120 void IDicomTranscoder::DicomImage::AcquireParsed(ParsedDicomFile& parsed) |
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121 { |
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122 AcquireParsed(parsed.ReleaseDcmtkObject()); |
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123 } |
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124 |
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125 |
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126 void IDicomTranscoder::DicomImage::AcquireParsed(DcmFileFormat* parsed) |
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127 { |
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128 if (parsed == NULL) |
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129 { |
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130 throw OrthancException(ErrorCode_NullPointer); |
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131 } |
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132 else if (parsed->getDataset() == NULL) |
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133 { |
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134 throw OrthancException(ErrorCode_InternalError); |
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135 } |
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136 else if (parsed_.get() != NULL) |
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137 { |
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138 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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139 } |
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140 else |
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141 { |
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142 parsed_.reset(parsed); |
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143 } |
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144 } |
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145 |
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146 |
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147 void IDicomTranscoder::DicomImage::AcquireParsed(DicomImage& other) |
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148 { |
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149 AcquireParsed(other.ReleaseParsed()); |
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150 } |
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151 |
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152 |
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153 void IDicomTranscoder::DicomImage::AcquireBuffer(std::string& buffer /* will be swapped */) |
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154 { |
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155 if (buffer_.get() != NULL || |
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156 isExternalBuffer_) |
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157 { |
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158 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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159 } |
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160 else |
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161 { |
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162 buffer_.reset(new std::string); |
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163 buffer_->swap(buffer); |
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164 } |
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165 } |
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166 |
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167 |
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168 void IDicomTranscoder::DicomImage::AcquireBuffer(DicomImage& other) |
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169 { |
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170 if (buffer_.get() != NULL || |
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171 isExternalBuffer_) |
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172 { |
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173 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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174 } |
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175 else if (other.isExternalBuffer_) |
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176 { |
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177 assert(other.buffer_.get() == NULL); |
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178 isExternalBuffer_ = true; |
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179 externalBuffer_ = other.externalBuffer_; |
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180 externalSize_ = other.externalSize_; |
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181 } |
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182 else if (other.buffer_.get() != NULL) |
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183 { |
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184 buffer_.reset(other.buffer_.release()); |
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185 } |
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186 else |
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187 { |
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188 buffer_.reset(NULL); |
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189 } |
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190 } |
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191 |
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192 |
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193 void IDicomTranscoder::DicomImage::SetExternalBuffer(const void* buffer, |
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194 size_t size) |
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195 { |
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196 if (buffer_.get() != NULL || |
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197 isExternalBuffer_) |
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198 { |
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199 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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200 } |
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201 else |
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202 { |
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203 isExternalBuffer_ = true; |
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204 externalBuffer_ = buffer; |
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205 externalSize_ = size; |
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206 } |
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207 } |
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208 |
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209 |
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210 void IDicomTranscoder::DicomImage::SetExternalBuffer(const std::string& buffer) |
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211 { |
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212 SetExternalBuffer(buffer.empty() ? NULL : buffer.c_str(), buffer.size()); |
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213 } |
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214 |
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215 |
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216 DcmFileFormat& IDicomTranscoder::DicomImage::GetParsed() |
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217 { |
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218 if (parsed_.get() != NULL) |
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219 { |
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220 return *parsed_; |
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221 } |
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222 else if (buffer_.get() != NULL || |
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223 isExternalBuffer_) |
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224 { |
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225 Parse(); |
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226 return *parsed_; |
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227 } |
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228 else |
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229 { |
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230 throw OrthancException( |
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231 ErrorCode_BadSequenceOfCalls, |
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232 "AcquireParsed(), AcquireBuffer() or SetExternalBuffer() should have been called"); |
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233 } |
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234 } |
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235 |
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236 |
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237 DcmFileFormat* IDicomTranscoder::DicomImage::ReleaseParsed() |
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238 { |
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239 if (parsed_.get() != NULL) |
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240 { |
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241 buffer_.reset(NULL); |
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242 return parsed_.release(); |
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243 } |
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244 else if (buffer_.get() != NULL || |
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245 isExternalBuffer_) |
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246 { |
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247 Parse(); |
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248 buffer_.reset(NULL); |
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249 return parsed_.release(); |
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250 } |
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251 else |
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252 { |
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253 throw OrthancException( |
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254 ErrorCode_BadSequenceOfCalls, |
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255 "AcquireParsed(), AcquireBuffer() or SetExternalBuffer() should have been called"); |
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256 } |
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257 } |
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258 |
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259 |
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260 ParsedDicomFile* IDicomTranscoder::DicomImage::ReleaseAsParsedDicomFile() |
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261 { |
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262 return ParsedDicomFile::AcquireDcmtkObject(ReleaseParsed()); |
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263 } |
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264 |
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265 |
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266 const void* IDicomTranscoder::DicomImage::GetBufferData() |
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267 { |
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268 if (isExternalBuffer_) |
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269 { |
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270 assert(buffer_.get() == NULL); |
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271 return externalBuffer_; |
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272 } |
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273 else |
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274 { |
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275 if (buffer_.get() == NULL) |
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276 { |
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277 Serialize(); |
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278 } |
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279 |
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280 assert(buffer_.get() != NULL); |
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281 return buffer_->empty() ? NULL : buffer_->c_str(); |
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282 } |
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283 } |
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284 |
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285 |
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286 size_t IDicomTranscoder::DicomImage::GetBufferSize() |
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287 { |
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288 if (isExternalBuffer_) |
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289 { |
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290 assert(buffer_.get() == NULL); |
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291 return externalSize_; |
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292 } |
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293 else |
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294 { |
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295 if (buffer_.get() == NULL) |
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296 { |
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297 Serialize(); |
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298 } |
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299 |
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300 assert(buffer_.get() != NULL); |
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301 return buffer_->size(); |
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302 } |
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303 } |
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304 } |