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annotate OrthancFramework/Sources/DicomParsing/MemoryBufferTranscoder.cpp @ 5649:4a2bfda999c6

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author Alain Mazy <am@orthanc.team>
date Mon, 03 Jun 2024 14:30:30 +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) 2017-2023 Osimis S.A., Belgium
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6 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium
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7 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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8 *
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9 * This program is free software: you can redistribute it and/or
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10 * modify it under the terms of the GNU Lesser General Public License
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11 * as published by the Free Software Foundation, either version 3 of
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12 * the License, or (at your option) any later version.
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13 *
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14 * This program is distributed in the hope that it will be useful, but
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15 * WITHOUT ANY WARRANTY; without even the implied warranty of
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 * Lesser General Public License for more details.
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18 *
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19 * You should have received a copy of the GNU Lesser General Public
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20 * License along with this program. If not, see
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21 * <http://www.gnu.org/licenses/>.
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22 **/
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23
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24
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25 #include "../PrecompiledHeaders.h"
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26 #include "MemoryBufferTranscoder.h"
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27
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28 #include "../Logging.h"
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29 #include "../OrthancException.h"
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30 #include "FromDcmtkBridge.h"
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31
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32 #if !defined(NDEBUG) // For debugging
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33 # include "ParsedDicomFile.h"
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34 #endif
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35
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36
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37 namespace Orthanc
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38 {
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39 static void CheckTargetSyntax(const std::string& transcoded,
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40 const std::set<DicomTransferSyntax>& allowedSyntaxes)
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41 {
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42 #if !defined(NDEBUG)
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43 // Debug mode
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44 ParsedDicomFile parsed(transcoded);
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45
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46 DicomTransferSyntax a, b;
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47 if (!const_cast<const ParsedDicomFile&>(parsed).LookupTransferSyntax(b) ||
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48 !FromDcmtkBridge::LookupOrthancTransferSyntax(a, parsed.GetDcmtkObject()) ||
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49 a != b ||
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50 allowedSyntaxes.find(a) == allowedSyntaxes.end())
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51 {
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52 throw OrthancException(
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53 ErrorCode_Plugin,
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54 "DEBUG - The transcoding plugin has not written to one of the allowed transfer syntaxes");
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55 }
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56 #endif
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57 }
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58
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59
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60 bool MemoryBufferTranscoder::Transcode(DicomImage& target,
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61 DicomImage& source,
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62 const std::set<DicomTransferSyntax>& allowedSyntaxes,
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63 bool allowNewSopInstanceUid)
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64 {
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65 target.Clear();
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66
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67 #if !defined(NDEBUG)
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68 // Don't run this code in release mode, as it implies parsing the DICOM file
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69 DicomTransferSyntax sourceSyntax;
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70 if (!FromDcmtkBridge::LookupOrthancTransferSyntax(sourceSyntax, source.GetParsed()))
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71 {
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72 LOG(ERROR) << "Unsupport transfer syntax for transcoding";
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73 return false;
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74 }
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75
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76 const std::string sourceSopInstanceUid = GetSopInstanceUid(source.GetParsed());
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77 #endif
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78
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79 std::string buffer;
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80 if (TranscodeBuffer(buffer, source.GetBufferData(), source.GetBufferSize(),
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81 allowedSyntaxes, allowNewSopInstanceUid))
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82 {
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83 CheckTargetSyntax(buffer, allowedSyntaxes); // For debug only
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84
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85 target.AcquireBuffer(buffer);
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86
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87 #if !defined(NDEBUG)
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88 // Only run the sanity check in debug mode
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89 CheckTranscoding(target, sourceSyntax, sourceSopInstanceUid,
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90 allowedSyntaxes, allowNewSopInstanceUid);
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91 #endif
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92
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93 return true;
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94 }
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95 else
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96 {
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97 return false;
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98 }
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99 }
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100 }