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annotate OrthancFramework/Sources/DicomParsing/MemoryBufferTranscoder.cpp @ 4596:2b64cc3cea99

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added OrthancPluginContentType_DicomUntilPixelData
author Alain Mazy <am@osimis.io>
date Wed, 17 Mar 2021 15:31:26 +0100
parents a3c6678aa7b1
children 7053502fbf97
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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) 2017-2021 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 "MemoryBufferTranscoder.h"
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25
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26 #include "../Logging.h"
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27 #include "../OrthancException.h"
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28 #include "FromDcmtkBridge.h"
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29
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30 #if !defined(NDEBUG) // For debugging
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31 # include "ParsedDicomFile.h"
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32 #endif
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33
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34
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35 namespace Orthanc
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36 {
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37 static void CheckTargetSyntax(const std::string& transcoded,
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38 const std::set<DicomTransferSyntax>& allowedSyntaxes)
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39 {
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40 #if !defined(NDEBUG)
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41 // Debug mode
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42 ParsedDicomFile parsed(transcoded);
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43
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44 DicomTransferSyntax a, b;
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45 if (!const_cast<const ParsedDicomFile&>(parsed).LookupTransferSyntax(b) ||
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46 !FromDcmtkBridge::LookupOrthancTransferSyntax(a, parsed.GetDcmtkObject()) ||
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47 a != b ||
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48 allowedSyntaxes.find(a) == allowedSyntaxes.end())
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49 {
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50 throw OrthancException(
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51 ErrorCode_Plugin,
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52 "DEBUG - The transcoding plugin has not written to one of the allowed transfer syntaxes");
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53 }
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54 #endif
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55 }
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56
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57
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58 bool MemoryBufferTranscoder::Transcode(DicomImage& target,
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59 DicomImage& source,
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60 const std::set<DicomTransferSyntax>& allowedSyntaxes,
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61 bool allowNewSopInstanceUid)
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62 {
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63 target.Clear();
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64
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65 #if !defined(NDEBUG)
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66 // Don't run this code in release mode, as it implies parsing the DICOM file
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67 DicomTransferSyntax sourceSyntax;
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68 if (!FromDcmtkBridge::LookupOrthancTransferSyntax(sourceSyntax, source.GetParsed()))
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69 {
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70 LOG(ERROR) << "Unsupport transfer syntax for transcoding";
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71 return false;
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72 }
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73
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74 const std::string sourceSopInstanceUid = GetSopInstanceUid(source.GetParsed());
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75 #endif
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76
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77 std::string buffer;
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78 if (TranscodeBuffer(buffer, source.GetBufferData(), source.GetBufferSize(),
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79 allowedSyntaxes, allowNewSopInstanceUid))
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80 {
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81 CheckTargetSyntax(buffer, allowedSyntaxes); // For debug only
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82
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83 target.AcquireBuffer(buffer);
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84
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85 #if !defined(NDEBUG)
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86 // Only run the sanity check in debug mode
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87 CheckTranscoding(target, sourceSyntax, sourceSopInstanceUid,
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88 allowedSyntaxes, allowNewSopInstanceUid);
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89 #endif
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90
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91 return true;
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92 }
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93 else
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94 {
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95 return false;
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96 }
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97 }
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98 }