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annotate OrthancFramework/Sources/DicomParsing/IDicomTranscoder.h @ 4706:dbee8bd8ee1f

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 22 Jun 2021 09:13:03 +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) 2017-2021 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 #pragma once
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24
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25 #include "../Compatibility.h"
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26 #include "../Enumerations.h"
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27
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28 #include <boost/noncopyable.hpp>
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29 #include <set>
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30
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31 class DcmFileFormat;
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32
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33 namespace Orthanc
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34 {
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35 class ParsedDicomFile;
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36
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37 /**
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38 * WARNING: This class might be called from several threads at
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39 * once. Make sure to implement proper locking.
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40 **/
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41 class ORTHANC_PUBLIC IDicomTranscoder : public boost::noncopyable
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42 {
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43 public:
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44 class ORTHANC_PUBLIC DicomImage : public boost::noncopyable
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45 {
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46 private:
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47 std::unique_ptr<DcmFileFormat> parsed_;
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48 std::unique_ptr<std::string> buffer_;
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49 bool isExternalBuffer_;
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50 const void* externalBuffer_;
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51 size_t externalSize_;
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52
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53 void Parse();
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54
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55 void Serialize();
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56
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57 DcmFileFormat* ReleaseParsed();
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58
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59 public:
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60 DicomImage();
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61
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62 void Clear();
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63
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64 // Calling this method will invalidate the "ParsedDicomFile" object
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65 void AcquireParsed(ParsedDicomFile& parsed);
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66
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67 void AcquireParsed(DcmFileFormat* parsed);
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68
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69 void AcquireParsed(DicomImage& other);
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70
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71 void AcquireBuffer(std::string& buffer /* will be swapped */);
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72
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73 void AcquireBuffer(DicomImage& other);
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74
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75 void SetExternalBuffer(const void* buffer,
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76 size_t size);
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77
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78 void SetExternalBuffer(const std::string& buffer);
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79
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80 DcmFileFormat& GetParsed();
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81
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82 ParsedDicomFile* ReleaseAsParsedDicomFile();
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83
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84 const void* GetBufferData();
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85
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86 size_t GetBufferSize();
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87 };
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88
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89
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90 protected:
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91 enum TranscodingType
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92 {
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93 TranscodingType_Lossy,
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94 TranscodingType_Lossless,
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95 TranscodingType_Unknown
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96 };
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97
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98 static TranscodingType GetTranscodingType(DicomTransferSyntax target,
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99 DicomTransferSyntax source);
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100
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101 static void CheckTranscoding(DicomImage& transcoded,
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102 DicomTransferSyntax sourceSyntax,
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103 const std::string& sourceSopInstanceUid,
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104 const std::set<DicomTransferSyntax>& allowedSyntaxes,
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105 bool allowNewSopInstanceUid);
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106
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107 public:
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108 virtual ~IDicomTranscoder()
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109 {
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110 }
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111
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112 virtual bool Transcode(DicomImage& target,
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113 DicomImage& source /* in, "GetParsed()" possibly modified */,
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114 const std::set<DicomTransferSyntax>& allowedSyntaxes,
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115 bool allowNewSopInstanceUid) = 0;
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116
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117 static std::string GetSopInstanceUid(DcmFileFormat& dicom);
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118 };
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119 }