Mercurial > hg > orthanc
annotate OrthancFramework/Sources/DicomParsing/IDicomTranscoder.cpp @ 4302:4c91fbede7d2
missing macro CIVETWEB_KEEP_ALIVE_TIMEOUT_SECONDS
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 06 Nov 2020 10:00:05 +0100 |
parents | b30a8de92ad9 |
children | 44b53a2c0a13 |
rev | line source |
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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 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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21 |
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22 |
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23 #include "../PrecompiledHeaders.h" |
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24 #include "IDicomTranscoder.h" |
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25 |
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26 #include "../OrthancException.h" |
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27 #include "FromDcmtkBridge.h" |
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28 #include "ParsedDicomFile.h" |
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29 |
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30 #include <dcmtk/dcmdata/dcfilefo.h> |
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31 #include <dcmtk/dcmdata/dcdeftag.h> |
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32 |
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33 namespace Orthanc |
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34 { |
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35 IDicomTranscoder::TranscodingType IDicomTranscoder::GetTranscodingType(DicomTransferSyntax target, |
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36 DicomTransferSyntax source) |
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37 { |
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38 if (target == source) |
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39 { |
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40 return TranscodingType_Lossless; |
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41 } |
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42 else if (target == DicomTransferSyntax_LittleEndianImplicit || |
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43 target == DicomTransferSyntax_LittleEndianExplicit || |
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44 target == DicomTransferSyntax_BigEndianExplicit || |
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45 target == DicomTransferSyntax_DeflatedLittleEndianExplicit || |
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46 target == DicomTransferSyntax_JPEGProcess14 || |
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47 target == DicomTransferSyntax_JPEGProcess14SV1 || |
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48 target == DicomTransferSyntax_JPEGLSLossless || |
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49 target == DicomTransferSyntax_JPEG2000LosslessOnly || |
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50 target == DicomTransferSyntax_JPEG2000MulticomponentLosslessOnly) |
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51 { |
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52 return TranscodingType_Lossless; |
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53 } |
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54 else if (target == DicomTransferSyntax_JPEGProcess1 || |
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55 target == DicomTransferSyntax_JPEGProcess2_4 || |
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56 target == DicomTransferSyntax_JPEGLSLossy || |
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57 target == DicomTransferSyntax_JPEG2000 || |
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58 target == DicomTransferSyntax_JPEG2000Multicomponent) |
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59 { |
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60 return TranscodingType_Lossy; |
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61 } |
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62 else |
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63 { |
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64 return TranscodingType_Unknown; |
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65 } |
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66 } |
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67 |
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68 |
4300 | 69 IDicomTranscoder::~IDicomTranscoder() |
70 { | |
71 } | |
72 | |
73 | |
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74 std::string IDicomTranscoder::GetSopInstanceUid(DcmFileFormat& dicom) |
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75 { |
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76 if (dicom.getDataset() == NULL) |
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77 { |
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78 throw OrthancException(ErrorCode_InternalError); |
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79 } |
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80 |
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81 DcmDataset& dataset = *dicom.getDataset(); |
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82 |
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83 const char* v = NULL; |
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84 |
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85 if (dataset.findAndGetString(DCM_SOPInstanceUID, v).good() && |
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86 v != NULL) |
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87 { |
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88 return std::string(v); |
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89 } |
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90 else |
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91 { |
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92 throw OrthancException(ErrorCode_BadFileFormat, "File without SOP instance UID"); |
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93 } |
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94 } |
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95 |
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96 |
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97 void IDicomTranscoder::CheckTranscoding(IDicomTranscoder::DicomImage& transcoded, |
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98 DicomTransferSyntax sourceSyntax, |
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99 const std::string& sourceSopInstanceUid, |
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100 const std::set<DicomTransferSyntax>& allowedSyntaxes, |
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101 bool allowNewSopInstanceUid) |
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102 { |
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103 DcmFileFormat& parsed = transcoded.GetParsed(); |
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104 |
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105 if (parsed.getDataset() == NULL) |
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106 { |
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107 throw OrthancException(ErrorCode_InternalError); |
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108 } |
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109 |
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110 std::string targetSopInstanceUid = GetSopInstanceUid(parsed); |
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111 |
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112 if (parsed.getDataset()->tagExists(DCM_PixelData)) |
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113 { |
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114 if (!allowNewSopInstanceUid && (targetSopInstanceUid != sourceSopInstanceUid)) |
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115 { |
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116 throw OrthancException(ErrorCode_InternalError); |
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117 } |
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118 } |
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119 else |
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120 { |
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121 if (targetSopInstanceUid != sourceSopInstanceUid) |
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122 { |
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123 throw OrthancException(ErrorCode_InternalError, |
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124 "No pixel data: Transcoding must not change the SOP instance UID"); |
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125 } |
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126 } |
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127 |
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128 DicomTransferSyntax targetSyntax; |
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129 if (!FromDcmtkBridge::LookupOrthancTransferSyntax(targetSyntax, parsed)) |
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130 { |
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131 return; // Unknown transfer syntax, cannot do further test |
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132 } |
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133 |
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134 if (allowedSyntaxes.find(sourceSyntax) != allowedSyntaxes.end()) |
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135 { |
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136 // No transcoding should have happened |
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137 if (targetSopInstanceUid != sourceSopInstanceUid) |
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138 { |
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139 throw OrthancException(ErrorCode_InternalError); |
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140 } |
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141 } |
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142 |
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143 if (allowedSyntaxes.find(targetSyntax) == allowedSyntaxes.end()) |
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144 { |
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145 throw OrthancException(ErrorCode_InternalError, "An incorrect output transfer syntax was chosen"); |
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146 } |
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147 |
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148 if (parsed.getDataset()->tagExists(DCM_PixelData)) |
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149 { |
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150 switch (GetTranscodingType(targetSyntax, sourceSyntax)) |
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151 { |
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152 case TranscodingType_Lossy: |
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153 if (targetSopInstanceUid == sourceSopInstanceUid) |
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154 { |
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155 throw OrthancException(ErrorCode_InternalError); |
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156 } |
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157 break; |
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158 |
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159 case TranscodingType_Lossless: |
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160 if (targetSopInstanceUid != sourceSopInstanceUid) |
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161 { |
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162 throw OrthancException(ErrorCode_InternalError); |
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163 } |
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164 break; |
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165 |
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166 default: |
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167 break; |
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168 } |
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169 } |
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170 } |
4300 | 171 |
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172 |
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173 void IDicomTranscoder::DicomImage::Parse() |
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174 { |
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175 if (parsed_.get() != NULL) |
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176 { |
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177 // Already parsed |
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178 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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179 } |
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180 else if (buffer_.get() != NULL) |
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181 { |
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182 if (isExternalBuffer_) |
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183 { |
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184 throw OrthancException(ErrorCode_InternalError); |
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185 } |
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186 else |
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187 { |
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188 parsed_.reset(FromDcmtkBridge::LoadFromMemoryBuffer( |
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189 buffer_->empty() ? NULL : buffer_->c_str(), buffer_->size())); |
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190 |
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191 if (parsed_.get() == NULL) |
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192 { |
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193 throw OrthancException(ErrorCode_BadFileFormat); |
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194 } |
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195 } |
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196 } |
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197 else if (isExternalBuffer_) |
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198 { |
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199 parsed_.reset(FromDcmtkBridge::LoadFromMemoryBuffer(externalBuffer_, externalSize_)); |
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200 |
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201 if (parsed_.get() == NULL) |
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202 { |
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203 throw OrthancException(ErrorCode_BadFileFormat); |
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204 } |
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205 } |
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206 else |
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207 { |
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208 // No buffer is available |
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209 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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210 } |
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211 } |
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212 |
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213 |
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214 void IDicomTranscoder::DicomImage::Serialize() |
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215 { |
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216 if (parsed_.get() == NULL || |
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217 buffer_.get() != NULL || |
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218 isExternalBuffer_) |
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219 { |
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220 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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221 } |
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222 else if (parsed_->getDataset() == NULL) |
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223 { |
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224 throw OrthancException(ErrorCode_InternalError); |
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225 } |
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226 else |
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227 { |
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228 buffer_.reset(new std::string); |
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229 FromDcmtkBridge::SaveToMemoryBuffer(*buffer_, *parsed_->getDataset()); |
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230 } |
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231 } |
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232 |
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233 |
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234 IDicomTranscoder::DicomImage::DicomImage() : |
4200 | 235 isExternalBuffer_(false), |
236 externalBuffer_(NULL), | |
237 externalSize_(0) | |
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238 { |
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239 } |
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240 |
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241 |
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242 void IDicomTranscoder::DicomImage::Clear() |
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243 { |
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244 parsed_.reset(NULL); |
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245 buffer_.reset(NULL); |
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246 isExternalBuffer_ = false; |
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247 } |
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248 |
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249 |
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250 void IDicomTranscoder::DicomImage::AcquireParsed(ParsedDicomFile& parsed) |
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251 { |
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252 AcquireParsed(parsed.ReleaseDcmtkObject()); |
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253 } |
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254 |
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255 |
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256 void IDicomTranscoder::DicomImage::AcquireParsed(DcmFileFormat* parsed) |
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257 { |
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258 if (parsed == NULL) |
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259 { |
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260 throw OrthancException(ErrorCode_NullPointer); |
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261 } |
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262 else if (parsed->getDataset() == NULL) |
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263 { |
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264 throw OrthancException(ErrorCode_InternalError); |
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265 } |
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266 else if (parsed_.get() != NULL) |
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267 { |
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268 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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269 } |
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270 else |
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271 { |
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272 parsed_.reset(parsed); |
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273 } |
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274 } |
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275 |
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276 |
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277 void IDicomTranscoder::DicomImage::AcquireParsed(DicomImage& other) |
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278 { |
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279 AcquireParsed(other.ReleaseParsed()); |
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280 } |
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281 |
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282 |
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283 void IDicomTranscoder::DicomImage::AcquireBuffer(std::string& buffer /* will be swapped */) |
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284 { |
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285 if (buffer_.get() != NULL || |
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286 isExternalBuffer_) |
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287 { |
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288 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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289 } |
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290 else |
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291 { |
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292 buffer_.reset(new std::string); |
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293 buffer_->swap(buffer); |
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294 } |
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295 } |
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296 |
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297 |
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298 void IDicomTranscoder::DicomImage::AcquireBuffer(DicomImage& other) |
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299 { |
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300 if (buffer_.get() != NULL || |
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301 isExternalBuffer_) |
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302 { |
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303 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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304 } |
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305 else if (other.isExternalBuffer_) |
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306 { |
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307 assert(other.buffer_.get() == NULL); |
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308 isExternalBuffer_ = true; |
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309 externalBuffer_ = other.externalBuffer_; |
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310 externalSize_ = other.externalSize_; |
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311 } |
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312 else if (other.buffer_.get() != NULL) |
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313 { |
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314 buffer_.reset(other.buffer_.release()); |
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315 } |
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316 else |
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317 { |
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318 buffer_.reset(NULL); |
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319 } |
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320 } |
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321 |
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322 |
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323 void IDicomTranscoder::DicomImage::SetExternalBuffer(const void* buffer, |
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324 size_t size) |
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325 { |
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326 if (buffer_.get() != NULL || |
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327 isExternalBuffer_) |
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328 { |
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329 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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330 } |
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331 else |
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332 { |
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333 isExternalBuffer_ = true; |
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334 externalBuffer_ = buffer; |
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335 externalSize_ = size; |
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336 } |
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337 } |
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338 |
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339 |
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340 void IDicomTranscoder::DicomImage::SetExternalBuffer(const std::string& buffer) |
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341 { |
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342 SetExternalBuffer(buffer.empty() ? NULL : buffer.c_str(), buffer.size()); |
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343 } |
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344 |
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345 |
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346 DcmFileFormat& IDicomTranscoder::DicomImage::GetParsed() |
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347 { |
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348 if (parsed_.get() != NULL) |
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349 { |
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350 return *parsed_; |
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351 } |
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352 else if (buffer_.get() != NULL || |
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353 isExternalBuffer_) |
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354 { |
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355 Parse(); |
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356 return *parsed_; |
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357 } |
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358 else |
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359 { |
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360 throw OrthancException( |
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361 ErrorCode_BadSequenceOfCalls, |
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362 "AcquireParsed(), AcquireBuffer() or SetExternalBuffer() should have been called"); |
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363 } |
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364 } |
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365 |
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366 |
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367 DcmFileFormat* IDicomTranscoder::DicomImage::ReleaseParsed() |
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368 { |
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369 if (parsed_.get() != NULL) |
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370 { |
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371 buffer_.reset(NULL); |
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372 return parsed_.release(); |
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373 } |
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374 else if (buffer_.get() != NULL || |
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375 isExternalBuffer_) |
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376 { |
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377 Parse(); |
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378 buffer_.reset(NULL); |
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379 return parsed_.release(); |
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380 } |
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381 else |
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382 { |
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383 throw OrthancException( |
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384 ErrorCode_BadSequenceOfCalls, |
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385 "AcquireParsed(), AcquireBuffer() or SetExternalBuffer() should have been called"); |
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386 } |
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387 } |
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388 |
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389 |
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390 ParsedDicomFile* IDicomTranscoder::DicomImage::ReleaseAsParsedDicomFile() |
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391 { |
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392 return ParsedDicomFile::AcquireDcmtkObject(ReleaseParsed()); |
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393 } |
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394 |
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395 |
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396 const void* IDicomTranscoder::DicomImage::GetBufferData() |
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397 { |
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398 if (isExternalBuffer_) |
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399 { |
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400 assert(buffer_.get() == NULL); |
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401 return externalBuffer_; |
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402 } |
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403 else |
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404 { |
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405 if (buffer_.get() == NULL) |
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406 { |
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407 Serialize(); |
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408 } |
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409 |
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410 assert(buffer_.get() != NULL); |
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411 return buffer_->empty() ? NULL : buffer_->c_str(); |
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412 } |
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413 } |
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414 |
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415 |
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416 size_t IDicomTranscoder::DicomImage::GetBufferSize() |
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417 { |
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418 if (isExternalBuffer_) |
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419 { |
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420 assert(buffer_.get() == NULL); |
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421 return externalSize_; |
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422 } |
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423 else |
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424 { |
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425 if (buffer_.get() == NULL) |
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426 { |
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427 Serialize(); |
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428 } |
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429 |
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430 assert(buffer_.get() != NULL); |
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431 return buffer_->size(); |
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432 } |
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433 } |
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434 } |