Mercurial > hg > orthanc

annotate Core/DicomParsing/MemoryBufferTranscoder.cpp @ 3906:f0dd5ded8927 transcoding

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refactoring using IDicomTranscoder::TranscodedDicom
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 08 May 2020 11:16:16 +0200
parents 061f3d031b5d
children 1555feda39e2
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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 "MemoryBufferTranscoder.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
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40 namespace Orthanc
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41 {
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42 MemoryBufferTranscoder::MemoryBufferTranscoder()
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43 {
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44 #if ORTHANC_ENABLE_DCMTK_TRANSCODING == 1
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45 useDcmtk_ = true;
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46 #else
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47 useDcmtk_ = false;
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48 #endif
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49 }
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50
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51
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52 void MemoryBufferTranscoder::SetDcmtkUsed(bool used)
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53 {
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54 #if ORTHANC_ENABLE_DCMTK_TRANSCODING != 1
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55 if (useDcmtk)
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56 {
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57 throw OrthancException(ErrorCode_NotImplemented,
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58 "Orthanc was built without support for DMCTK transcoding");
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59 }
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60 #endif
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61
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62 useDcmtk_ = used;
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63 }
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64
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65
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66 bool MemoryBufferTranscoder::TranscodeToBuffer(std::string& target,
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67 bool& hasSopInstanceUidChanged,
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68 const void* buffer,
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69 size_t size,
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70 const std::set<DicomTransferSyntax>& allowedSyntaxes,
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71 bool allowNewSopInstanceUid)
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72 {
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73 #if ORTHANC_ENABLE_DCMTK_TRANSCODING == 1
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74 if (useDcmtk_)
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75 {
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76 if (dcmtk_.TranscodeToBuffer(target, hasSopInstanceUidChanged, buffer,
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77 size, allowedSyntaxes, allowNewSopInstanceUid))
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78 {
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79 return true;
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80 }
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81 }
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82 #endif
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83
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84 DicomTransferSyntax sourceSyntax, targetSyntax;
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85 return Transcode(target, sourceSyntax, targetSyntax, hasSopInstanceUidChanged, buffer, size,
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86 allowedSyntaxes, allowNewSopInstanceUid);
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87 }
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88
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89
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90 DcmFileFormat* MemoryBufferTranscoder::TranscodeToParsed(bool& hasSopInstanceUidChanged,
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91 const void* buffer,
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92 size_t size,
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93 const std::set<DicomTransferSyntax>& allowedSyntaxes,
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94 bool allowNewSopInstanceUid)
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95 {
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96 #if ORTHANC_ENABLE_DCMTK_TRANSCODING == 1
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97 if (useDcmtk_)
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98 {
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99 std::unique_ptr<DcmFileFormat> transcoded(
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100 dcmtk_.TranscodeToParsed(hasSopInstanceUidChanged, buffer, size,
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101 allowedSyntaxes, allowNewSopInstanceUid));
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102 if (transcoded.get() != NULL)
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103 {
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104 return transcoded.release();
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105 }
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106 }
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107 #endif
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108
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109 std::string transcoded;
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110 DicomTransferSyntax sourceSyntax, targetSyntax;
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111 if (Transcode(transcoded, sourceSyntax, targetSyntax, hasSopInstanceUidChanged,
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112 buffer, size, allowedSyntaxes, allowNewSopInstanceUid))
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113 {
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114 return FromDcmtkBridge::LoadFromMemoryBuffer(
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115 transcoded.empty() ? NULL : transcoded.c_str(), transcoded.size());
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116 }
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117 else
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118 {
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119 return NULL;
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120 }
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121 }
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122
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123
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124 bool MemoryBufferTranscoder::HasInplaceTranscode(
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125 DicomTransferSyntax inputSyntax,
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126 const std::set<DicomTransferSyntax>& outputSyntaxes) const
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127 {
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128 /**
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129 * Inplace transcoding is only possible if DCMTK is enabled, and
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130 * if DCMTK supports all the requested transfer
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131 * syntaxes. Otherwise, one has to call the "buffer-to-buffer"
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132 * transcoder.
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133 **/
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134
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135 #if ORTHANC_ENABLE_DCMTK_TRANSCODING == 1
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136 if (useDcmtk_)
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137 {
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138 if (!DcmtkTranscoder::IsSupported(inputSyntax))
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139 {
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140 return false;
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141 }
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142
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143 for (std::set<DicomTransferSyntax>::const_iterator
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144 it = outputSyntaxes.begin(); it != outputSyntaxes.end(); ++it)
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145 {
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146 if (!DcmtkTranscoder::IsSupported(*it))
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147 {
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148 return false;
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149 }
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150 }
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151
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152 return true;
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153 }
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154 else
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155 #endif
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156 {
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157 return false;
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158 }
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159 }
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160
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161
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162 bool MemoryBufferTranscoder::InplaceTranscode(bool& hasSopInstanceUidChanged,
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163 DcmFileFormat& dicom,
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164 const std::set<DicomTransferSyntax>& allowedSyntaxes,
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165 bool allowNewSopInstanceUid)
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166 {
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167 #if ORTHANC_ENABLE_DCMTK_TRANSCODING == 1
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168 DicomTransferSyntax inputSyntax;
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169 if (useDcmtk_ &&
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170 FromDcmtkBridge::LookupOrthancTransferSyntax(inputSyntax, dicom) &&
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171 HasInplaceTranscode(inputSyntax, allowedSyntaxes))
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172 {
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173 return dcmtk_.InplaceTranscode(hasSopInstanceUidChanged, dicom, allowedSyntaxes, allowNewSopInstanceUid);
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174 }
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175 else
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176 #endif
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177 {
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178 // "HasInplaceTranscode()" should have been called
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179 throw OrthancException(ErrorCode_BadSequenceOfCalls);
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180 }
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181 }
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182
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183
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184
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185
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186 bool MemoryBufferTranscoder::TranscodeParsedToBuffer(
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187 std::string& target /* out */,
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188 DicomTransferSyntax& sourceSyntax /* out */,
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189 DicomTransferSyntax& targetSyntax /* out */,
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190 bool& hasSopInstanceUidChanged /* out */,
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191 DcmFileFormat& dicom /* in, possibly modified */,
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192 const std::set<DicomTransferSyntax>& allowedSyntaxes,
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193 bool allowNewSopInstanceUid)
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194 {
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195 if (dicom.getDataset() == NULL)
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196 {
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197 throw OrthancException(ErrorCode_InternalError);
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198 }
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199
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200 std::string source;
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201 FromDcmtkBridge::SaveToMemoryBuffer(source, *dicom.getDataset());
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202
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203 const void* data = source.empty() ? NULL : source.c_str();
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204
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205 bool success = Transcode(target, sourceSyntax, targetSyntax, hasSopInstanceUidChanged,
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206 data, source.size(), allowedSyntaxes, allowNewSopInstanceUid);
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207
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208 #if ORTHANC_ENABLE_DCMTK_TRANSCODING == 1
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209 if (useDcmtk_ &&
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210 dcmtk_.TranscodeParsedToBuffer(
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211 target, sourceSyntax, targetSyntax,hasSopInstanceUidChanged,
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212 dicom, allowedSyntaxes, allowNewSopInstanceUid))
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213 {
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214 success = true;
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215 }
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216 #endif
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217
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218 return success;
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219 }
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220
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221
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222 IDicomTranscoder::TranscodedDicom* MemoryBufferTranscoder::TranscodeToParsed2(
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223 DcmFileFormat& dicom /* in, possibly modified */,
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224 const void* buffer /* in, same DICOM file as "dicom" */,
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225 size_t size,
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226 const std::set<DicomTransferSyntax>& allowedSyntaxes,
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227 bool allowNewSopInstanceUid)
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228 {
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229 DicomTransferSyntax sourceSyntax, targetSyntax;
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230 bool hasSopInstanceUidChanged;
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231
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232 std::string target;
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233 if (Transcode(target, sourceSyntax, targetSyntax, hasSopInstanceUidChanged,
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234 buffer, size, allowedSyntaxes, allowNewSopInstanceUid))
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235 {
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236 const void* data = target.empty() ? NULL : target.c_str();
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237 return IDicomTranscoder::TranscodedDicom::CreateFromInternal(
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238 FromDcmtkBridge::LoadFromMemoryBuffer(data, target.size()), hasSopInstanceUidChanged);
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239 }
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240 #if ORTHANC_ENABLE_DCMTK_TRANSCODING == 1
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241 else if (useDcmtk_)
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242 {
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243 return dcmtk_.TranscodeToParsed2(dicom, buffer, size, allowedSyntaxes, allowNewSopInstanceUid);
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244 }
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245 #endif
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246 else
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247 {
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248 return NULL;
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249 }
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250 }
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251 }