Mercurial > hg > orthanc

annotate Core/DicomParsing/IDicomTranscoder.h @ 4064:7176ebf08765

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Semaphore: allow acquiring/releasing multiple resources
author Alain Mazy
date Thu, 11 Jun 2020 16:42:27 +0200
parents f9863630ec7f
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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 #pragma once
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35
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36 #include "../Compatibility.h"
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37 #include "../Enumerations.h"
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38
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39 #include <boost/noncopyable.hpp>
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40 #include <set>
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41
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42 class DcmFileFormat;
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43
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44 namespace Orthanc
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45 {
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46 class ParsedDicomFile;
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47
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48 /**
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49 * WARNING: This class might be called from several threads at
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50 * once. Make sure to implement proper locking.
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51 **/
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52 class ORTHANC_PUBLIC IDicomTranscoder : public boost::noncopyable
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53 {
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54 public:
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55 class DicomImage : public boost::noncopyable
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56 {
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57 private:
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58 std::unique_ptr<DcmFileFormat> parsed_;
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59 std::unique_ptr<std::string> buffer_;
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60 bool isExternalBuffer_;
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61 const void* externalBuffer_;
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62 size_t externalSize_;
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63
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64 void Parse();
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65
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66 void Serialize();
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67
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68 DcmFileFormat* ReleaseParsed();
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69
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70 public:
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71 DicomImage();
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72
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73 void Clear();
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74
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75 // Calling this method will invalidate the "ParsedDicomFile" object
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76 void AcquireParsed(ParsedDicomFile& parsed);
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77
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78 void AcquireParsed(DcmFileFormat* parsed);
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79
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80 void AcquireParsed(DicomImage& other);
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81
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82 void AcquireBuffer(std::string& buffer /* will be swapped */);
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83
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84 void AcquireBuffer(DicomImage& other);
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85
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86 void SetExternalBuffer(const void* buffer,
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87 size_t size);
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88
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89 void SetExternalBuffer(const std::string& buffer);
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90
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91 DcmFileFormat& GetParsed();
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92
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93 ParsedDicomFile* ReleaseAsParsedDicomFile();
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94
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95 const void* GetBufferData();
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96
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97 size_t GetBufferSize();
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98 };
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99
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100
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101 protected:
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102 enum TranscodingType
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103 {
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104 TranscodingType_Lossy,
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105 TranscodingType_Lossless,
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106 TranscodingType_Unknown
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107 };
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108
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109 static TranscodingType GetTranscodingType(DicomTransferSyntax target,
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110 DicomTransferSyntax source);
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111
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112 static void CheckTranscoding(DicomImage& transcoded,
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113 DicomTransferSyntax sourceSyntax,
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114 const std::string& sourceSopInstanceUid,
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115 const std::set<DicomTransferSyntax>& allowedSyntaxes,
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116 bool allowNewSopInstanceUid);
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117
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118 public:
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119 virtual ~IDicomTranscoder()
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120 {
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121 }
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122
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123 virtual bool Transcode(DicomImage& target,
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124 DicomImage& source /* in, "GetParsed()" possibly modified */,
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125 const std::set<DicomTransferSyntax>& allowedSyntaxes,
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126 bool allowNewSopInstanceUid) = 0;
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127
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128 static std::string GetSopInstanceUid(DcmFileFormat& dicom);
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129 };
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130 }