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annotate OrthancFramework/Sources/DicomFormat/DicomStreamReader.cpp @ 4694:da1edb7d6332

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 16 Jun 2021 17:37:47 +0200
parents 39192eb9b43d
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 "DicomStreamReader.h"
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25
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26 #include "../OrthancException.h"
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27
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28 #include <cassert>
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29 #include <sstream>
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30 #include <boost/iostreams/device/array.hpp>
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31 #include <boost/iostreams/stream.hpp>
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32
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33
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34 #include <iostream>
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35
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36 namespace Orthanc
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37 {
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38 static bool IsNormalizationNeeded(const std::string& source,
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39 ValueRepresentation vr)
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40 {
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41 return (!source.empty() &&
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42 (source[source.size() - 1] == ' ' ||
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43 source[source.size() - 1] == '\0') &&
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44 // Normalization only applies to string-based VR
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45 (vr == ValueRepresentation_ApplicationEntity ||
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46 vr == ValueRepresentation_AgeString ||
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47 vr == ValueRepresentation_CodeString ||
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48 vr == ValueRepresentation_DecimalString ||
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49 vr == ValueRepresentation_IntegerString ||
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50 vr == ValueRepresentation_LongString ||
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51 vr == ValueRepresentation_LongText ||
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52 vr == ValueRepresentation_PersonName ||
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53 vr == ValueRepresentation_ShortString ||
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54 vr == ValueRepresentation_ShortText ||
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55 vr == ValueRepresentation_UniqueIdentifier ||
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56 vr == ValueRepresentation_UnlimitedText));
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57 }
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58
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59
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60 static void NormalizeValue(std::string& inplace,
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61 ValueRepresentation vr)
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62 {
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63 if (IsNormalizationNeeded(inplace, vr))
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64 {
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65 assert(!inplace.empty());
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66 inplace.resize(inplace.size() - 1);
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67 }
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68 }
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69
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70
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71 static uint16_t ReadUnsignedInteger16(const char* dicom,
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72 bool littleEndian)
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73 {
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74 const uint8_t* p = reinterpret_cast<const uint8_t*>(dicom);
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75
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76 if (littleEndian)
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77 {
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78 return (static_cast<uint16_t>(p[0]) |
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79 (static_cast<uint16_t>(p[1]) << 8));
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80 }
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81 else
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82 {
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83 return (static_cast<uint16_t>(p[1]) |
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84 (static_cast<uint16_t>(p[0]) << 8));
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85 }
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86 }
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87
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88
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89 static uint32_t ReadUnsignedInteger32(const char* dicom,
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90 bool littleEndian)
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91 {
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92 const uint8_t* p = reinterpret_cast<const uint8_t*>(dicom);
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93
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94 if (littleEndian)
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95 {
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96 return (static_cast<uint32_t>(p[0]) |
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97 (static_cast<uint32_t>(p[1]) << 8) |
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98 (static_cast<uint32_t>(p[2]) << 16) |
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99 (static_cast<uint32_t>(p[3]) << 24));
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100 }
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101 else
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102 {
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103 return (static_cast<uint32_t>(p[3]) |
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104 (static_cast<uint32_t>(p[2]) << 8) |
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105 (static_cast<uint32_t>(p[1]) << 16) |
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106 (static_cast<uint32_t>(p[0]) << 24));
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107 }
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108 }
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109
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110
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111 static DicomTag ReadTag(const char* dicom,
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112 bool littleEndian)
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113 {
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114 return DicomTag(ReadUnsignedInteger16(dicom, littleEndian),
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115 ReadUnsignedInteger16(dicom + 2, littleEndian));
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116 }
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117
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118
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119 static bool IsShortExplicitTag(ValueRepresentation vr)
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120 {
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121 /**
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122 * Are we in the case of Table 7.1-2? "Data Element with
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123 * Explicit VR of AE, AS, AT, CS, DA, DS, DT, FL, FD, IS, LO,
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124 * LT, PN, SH, SL, SS, ST, TM, UI, UL and US"
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125 * http://dicom.nema.org/medical/dicom/current/output/chtml/part05/chapter_7.html#sect_7.1.2
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126 **/
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127 return (vr == ValueRepresentation_ApplicationEntity /* AE */ ||
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128 vr == ValueRepresentation_AgeString /* AS */ ||
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129 vr == ValueRepresentation_AttributeTag /* AT */ ||
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130 vr == ValueRepresentation_CodeString /* CS */ ||
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131 vr == ValueRepresentation_Date /* DA */ ||
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132 vr == ValueRepresentation_DecimalString /* DS */ ||
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133 vr == ValueRepresentation_DateTime /* DT */ ||
92a21efa5c96 reorganization of DicomStreamReader
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diff changeset
134 vr == ValueRepresentation_FloatingPointSingle /* FL */ ||
92a21efa5c96 reorganization of DicomStreamReader
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diff changeset
135 vr == ValueRepresentation_FloatingPointDouble /* FD */ ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
136 vr == ValueRepresentation_IntegerString /* IS */ ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
137 vr == ValueRepresentation_LongString /* LO */ ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
138 vr == ValueRepresentation_LongText /* LT */ ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
139 vr == ValueRepresentation_PersonName /* PN */ ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
140 vr == ValueRepresentation_ShortString /* SH */ ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
141 vr == ValueRepresentation_SignedLong /* SL */ ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
142 vr == ValueRepresentation_SignedShort /* SS */ ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
143 vr == ValueRepresentation_ShortText /* ST */ ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
144 vr == ValueRepresentation_Time /* TM */ ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
145 vr == ValueRepresentation_UniqueIdentifier /* UI */ ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
146 vr == ValueRepresentation_UnsignedLong /* UL */ ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
147 vr == ValueRepresentation_UnsignedShort /* US */);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
148 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
149
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
150
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
151 bool DicomStreamReader::IsLittleEndian() const
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
152 {
92a21efa5c96 reorganization of DicomStreamReader
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diff changeset
153 return (transferSyntax_ != DicomTransferSyntax_BigEndianExplicit);
92a21efa5c96 reorganization of DicomStreamReader
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diff changeset
154 }
92a21efa5c96 reorganization of DicomStreamReader
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parents:
diff changeset
155
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
156
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
157 void DicomStreamReader::HandlePreamble(IVisitor& visitor,
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
158 const std::string& block)
92a21efa5c96 reorganization of DicomStreamReader
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diff changeset
159 {
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
160 assert(block.size() == 144u);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
161 assert(reader_.GetProcessedBytes() == 144u);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
162
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
163 /**
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164 * The "DICOM file meta information" is always encoded using
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diff changeset
165 * "Explicit VR Little Endian Transfer Syntax"
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
166 * http://dicom.nema.org/medical/dicom/current/output/chtml/part10/chapter_7.html
92a21efa5c96 reorganization of DicomStreamReader
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parents:
diff changeset
167 **/
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
168 if (block[128] != 'D' ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
169 block[129] != 'I' ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
170 block[130] != 'C' ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
171 block[131] != 'M' ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
172 ReadTag(block.c_str() + 132, true) != DicomTag(0x0002, 0x0000) ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
173 block[136] != 'U' ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
174 block[137] != 'L' ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
175 ReadUnsignedInteger16(block.c_str() + 138, true) != 4)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
176 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
177 throw OrthancException(ErrorCode_BadFileFormat);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
178 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
179
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
180 uint32_t length = ReadUnsignedInteger32(block.c_str() + 140, true);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
181
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
182 reader_.Schedule(length);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
183 state_ = State_MetaHeader;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
184 }
92a21efa5c96 reorganization of DicomStreamReader
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diff changeset
185
4221
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parents: 4220
diff changeset
186
4220
92a21efa5c96 reorganization of DicomStreamReader
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parents:
diff changeset
187 void DicomStreamReader::HandleMetaHeader(IVisitor& visitor,
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
188 const std::string& block)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
189 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
190 size_t pos = 0;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
191 const char* p = block.c_str();
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
192
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
193 bool hasTransferSyntax = false;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
194
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
195 while (pos + 8 <= block.size())
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
196 {
92a21efa5c96 reorganization of DicomStreamReader
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parents:
diff changeset
197 DicomTag tag = ReadTag(p + pos, true);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
198
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
199 ValueRepresentation vr = StringToValueRepresentation(std::string(p + pos + 4, 2), true);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
200
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
201 if (IsShortExplicitTag(vr))
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
202 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
203 uint16_t length = ReadUnsignedInteger16(p + pos + 6, true);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
204
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
205 std::string value;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
206 value.assign(p + pos + 8, length);
4221
e4c0218b6b23 better normalization in stream reader
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parents: 4220
diff changeset
207 NormalizeValue(value, vr);
4220
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
208
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
209 if (tag.GetGroup() == 0x0002)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
210 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
211 visitor.VisitMetaHeaderTag(tag, vr, value);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
212 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
213
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
214 if (tag == DICOM_TAG_TRANSFER_SYNTAX_UID)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
215 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
216 if (LookupTransferSyntax(transferSyntax_, value))
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
217 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
218 hasTransferSyntax = true;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
219 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
220 else
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
221 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
222 throw OrthancException(ErrorCode_NotImplemented, "Unsupported transfer syntax: " + value);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
223 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
224 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
225
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
226 pos += length + 8;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
227 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
228 else if (pos + 12 <= block.size())
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
229 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
230 uint16_t reserved = ReadUnsignedInteger16(p + pos + 6, true);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
231 if (reserved != 0)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
232 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
233 break;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
234 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
235
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
236 uint32_t length = ReadUnsignedInteger32(p + pos + 8, true);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
237
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
238 if (tag.GetGroup() == 0x0002)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
239 {
4221
e4c0218b6b23 better normalization in stream reader
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4220
diff changeset
240 std::string value;
e4c0218b6b23 better normalization in stream reader
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4220
diff changeset
241 value.assign(p + pos + 12, length);
e4c0218b6b23 better normalization in stream reader
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4220
diff changeset
242 NormalizeValue(value, vr);
4220
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
243 visitor.VisitMetaHeaderTag(tag, vr, value);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
244 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
245
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
246 pos += length + 12;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
247 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
248 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
249
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
250 if (pos != block.size())
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
251 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
252 throw OrthancException(ErrorCode_BadFileFormat);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
253 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
254
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
255 if (!hasTransferSyntax)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
256 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
257 throw OrthancException(ErrorCode_BadFileFormat, "DICOM file meta-header without transfer syntax UID");
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
258 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
259
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
260 visitor.VisitTransferSyntax(transferSyntax_);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
261
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
262 reader_.Schedule(8);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
263 state_ = State_DatasetTag;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
264 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
265
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
266
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
267 void DicomStreamReader::HandleDatasetTag(const std::string& block,
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
268 const DicomTag& untilTag)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
269 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
270 static const DicomTag DICOM_TAG_SEQUENCE_ITEM(0xfffe, 0xe000);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
271 static const DicomTag DICOM_TAG_SEQUENCE_DELIMITATION_ITEM(0xfffe, 0xe00d);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
272 static const DicomTag DICOM_TAG_SEQUENCE_DELIMITATION_SEQUENCE(0xfffe, 0xe0dd);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
273
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
274 assert(block.size() == 8u);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
275
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
276 const bool littleEndian = IsLittleEndian();
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
277 DicomTag tag = ReadTag(block.c_str(), littleEndian);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
278
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
279 if (sequenceDepth_ == 0 &&
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
280 tag >= untilTag)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
281 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
282 state_ = State_Done;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
283 return;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
284 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
285
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
286 if (tag == DICOM_TAG_SEQUENCE_ITEM ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
287 tag == DICOM_TAG_SEQUENCE_DELIMITATION_ITEM ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
288 tag == DICOM_TAG_SEQUENCE_DELIMITATION_SEQUENCE)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
289 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
290 // The special sequence items are encoded like "Implicit VR"
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
291 uint32_t length = ReadUnsignedInteger32(block.c_str() + 4, littleEndian);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
292
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
293 if (tag == DICOM_TAG_SEQUENCE_ITEM)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
294 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
295 if (length == 0xffffffffu)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
296 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
297 // Undefined length: Need to loop over the tags of the nested dataset
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
298 reader_.Schedule(8);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
299 state_ = State_DatasetTag;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
300 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
301 else
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
302 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
303 // Explicit length: Can skip the full sequence at once
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
304 reader_.Schedule(length);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
305 state_ = State_DatasetValue;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
306 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
307 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
308 else if (tag == DICOM_TAG_SEQUENCE_DELIMITATION_ITEM ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
309 tag == DICOM_TAG_SEQUENCE_DELIMITATION_SEQUENCE)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
310 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
311 if (length != 0 ||
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
312 sequenceDepth_ == 0)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
313 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
314 throw OrthancException(ErrorCode_BadFileFormat);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
315 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
316
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
317 if (tag == DICOM_TAG_SEQUENCE_DELIMITATION_SEQUENCE)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
318 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
319 sequenceDepth_ --;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
320 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
321
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
322 reader_.Schedule(8);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
323 state_ = State_DatasetTag;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
324 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
325 else
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
326 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
327 throw OrthancException(ErrorCode_InternalError);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
328 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
329 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
330 else
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
331 {
4493
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
332 assert(reader_.GetProcessedBytes() >= block.size());
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
333 const uint64_t tagOffset = reader_.GetProcessedBytes() - block.size();
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
334
4220
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
335 ValueRepresentation vr = ValueRepresentation_Unknown;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
336
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
337 if (transferSyntax_ == DicomTransferSyntax_LittleEndianImplicit)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
338 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
339 if (sequenceDepth_ == 0)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
340 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
341 danglingTag_ = tag;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
342 danglingVR_ = vr;
4493
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
343 danglingOffset_ = tagOffset;
4220
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
344 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
345
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
346 uint32_t length = ReadUnsignedInteger32(block.c_str() + 4, true /* little endian */);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
347 HandleDatasetExplicitLength(length);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
348 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
349 else
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
350 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
351 // This in an explicit transfer syntax
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
352
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
353 vr = StringToValueRepresentation(
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
354 std::string(block.c_str() + 4, 2), false /* ignore unknown VR */);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
355
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
356 if (vr == ValueRepresentation_Sequence)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
357 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
358 sequenceDepth_ ++;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
359 reader_.Schedule(4);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
360 state_ = State_SequenceExplicitLength;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
361 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
362 else if (IsShortExplicitTag(vr))
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
363 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
364 uint16_t length = ReadUnsignedInteger16(block.c_str() + 6, littleEndian);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
365
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
366 reader_.Schedule(length);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
367 state_ = State_DatasetValue;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
368 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
369 else
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
370 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
371 uint16_t reserved = ReadUnsignedInteger16(block.c_str() + 6, littleEndian);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
372 if (reserved != 0)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
373 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
374 throw OrthancException(ErrorCode_BadFileFormat);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
375 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
376
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
377 reader_.Schedule(4);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
378 state_ = State_DatasetExplicitLength;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
379 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
380
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
381 if (sequenceDepth_ == 0)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
382 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
383 danglingTag_ = tag;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
384 danglingVR_ = vr;
4493
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
385 danglingOffset_ = tagOffset;
4220
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
386 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
387 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
388 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
389 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
390
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
391
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
392 void DicomStreamReader::HandleDatasetExplicitLength(uint32_t length)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
393 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
394 if (length == 0xffffffffu)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
395 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
396 /**
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
397 * This is the case of pixel data with compressed transfer
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
398 * syntaxes. Schedule the reading of the first tag of the
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
399 * nested dataset.
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
400 * http://dicom.nema.org/medical/dicom/current/output/chtml/part05/sect_7.5.html
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
401 **/
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
402 state_ = State_DatasetTag;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
403 reader_.Schedule(8);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
404 sequenceDepth_ ++;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
405 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
406 else
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
407 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
408 reader_.Schedule(length);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
409 state_ = State_DatasetValue;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
410 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
411 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
412
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
413
4493
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
414 void DicomStreamReader::HandleDatasetExplicitLength(IVisitor& visitor,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
415 const std::string& block)
4220
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
416 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
417 assert(block.size() == 4);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
418
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
419 uint32_t length = ReadUnsignedInteger32(block.c_str(), IsLittleEndian());
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
420 HandleDatasetExplicitLength(length);
4493
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
421
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
422 std::string empty;
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
423 if (!visitor.VisitDatasetTag(danglingTag_, danglingVR_, empty, IsLittleEndian(), danglingOffset_))
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
424 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
425 state_ = State_Done;
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
426 }
4220
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
427 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
428
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
429
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
430 void DicomStreamReader::HandleSequenceExplicitLength(const std::string& block)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
431 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
432 assert(block.size() == 4);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
433
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
434 uint32_t length = ReadUnsignedInteger32(block.c_str(), IsLittleEndian());
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
435 if (length == 0xffffffffu)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
436 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
437 state_ = State_DatasetTag;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
438 reader_.Schedule(8);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
439 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
440 else
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
441 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
442 reader_.Schedule(length);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
443 state_ = State_SequenceExplicitValue;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
444 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
445 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
446
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
447
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
448 void DicomStreamReader::HandleSequenceExplicitValue()
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
449 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
450 if (sequenceDepth_ == 0)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
451 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
452 throw OrthancException(ErrorCode_InternalError);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
453 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
454
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
455 sequenceDepth_ --;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
456
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
457 state_ = State_DatasetTag;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
458 reader_.Schedule(8);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
459 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
460
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
461
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
462 void DicomStreamReader::HandleDatasetValue(IVisitor& visitor,
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
463 const std::string& block)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
464 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
465 if (sequenceDepth_ == 0)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
466 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
467 bool c;
4221
e4c0218b6b23 better normalization in stream reader
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4220
diff changeset
468
e4c0218b6b23 better normalization in stream reader
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4220
diff changeset
469 if (IsNormalizationNeeded(block, danglingVR_))
4220
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
470 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
471 std::string s(block.begin(), block.end() - 1);
4493
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
472 c = visitor.VisitDatasetTag(danglingTag_, danglingVR_, s, IsLittleEndian(), danglingOffset_);
4220
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
473 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
474 else
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
475 {
4493
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
476 c = visitor.VisitDatasetTag(danglingTag_, danglingVR_, block, IsLittleEndian(), danglingOffset_);
4220
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
477 }
4493
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
478
4220
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
479 if (!c)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
480 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
481 state_ = State_Done;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
482 return;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
483 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
484 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
485
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
486 reader_.Schedule(8);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
487 state_ = State_DatasetTag;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
488 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
489
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
490
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
491 DicomStreamReader::DicomStreamReader(std::istream& stream) :
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
492 reader_(stream),
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
493 state_(State_Preamble),
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
494 transferSyntax_(DicomTransferSyntax_LittleEndianImplicit), // Dummy
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
495 danglingTag_(0x0000, 0x0000), // Dummy
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
496 danglingVR_(ValueRepresentation_Unknown), // Dummy
4493
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
497 danglingOffset_(0), // Dummy
4220
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
498 sequenceDepth_(0)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
499 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
500 reader_.Schedule(128 /* empty header */ +
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
501 4 /* "DICM" magic value */ +
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
502 4 /* (0x0002, 0x0000) tag */ +
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
503 2 /* value representation of (0x0002, 0x0000) == "UL" */ +
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
504 2 /* length of "UL" value == 4 */ +
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
505 4 /* actual length of the meta-header */);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
506 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
507
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
508
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
509 void DicomStreamReader::Consume(IVisitor& visitor,
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
510 const DicomTag& untilTag)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
511 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
512 while (state_ != State_Done)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
513 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
514 std::string block;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
515 if (reader_.Read(block))
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
516 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
517 switch (state_)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
518 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
519 case State_Preamble:
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
520 HandlePreamble(visitor, block);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
521 break;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
522
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
523 case State_MetaHeader:
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
524 HandleMetaHeader(visitor, block);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
525 break;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
526
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
527 case State_DatasetTag:
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
528 HandleDatasetTag(block, untilTag);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
529 break;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
530
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
531 case State_DatasetExplicitLength:
4493
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
532 HandleDatasetExplicitLength(visitor, block);
4220
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
533 break;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
534
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
535 case State_SequenceExplicitLength:
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
536 HandleSequenceExplicitLength(block);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
537 break;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
538
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
539 case State_SequenceExplicitValue:
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
540 HandleSequenceExplicitValue();
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
541 break;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
542
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
543 case State_DatasetValue:
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
544 HandleDatasetValue(visitor, block);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
545 break;
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
546
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
547 default:
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
548 throw OrthancException(ErrorCode_InternalError);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
549 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
550 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
551 else
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
552 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
553 return; // No more data in the stream
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
554 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
555 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
556 }
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
557
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
558
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
559 void DicomStreamReader::Consume(IVisitor& visitor)
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
560 {
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
561 DicomTag untilTag(0xffff, 0xffff);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
562 Consume(visitor, untilTag);
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
563 }
4277
c5ca798b158a CheckOrthancFrameworkSymbols.py
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4222
diff changeset
564
c5ca798b158a CheckOrthancFrameworkSymbols.py
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4222
diff changeset
565
c5ca798b158a CheckOrthancFrameworkSymbols.py
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4222
diff changeset
566 bool DicomStreamReader::IsDone() const
c5ca798b158a CheckOrthancFrameworkSymbols.py
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4222
diff changeset
567 {
c5ca798b158a CheckOrthancFrameworkSymbols.py
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4222
diff changeset
568 return (state_ == State_Done);
c5ca798b158a CheckOrthancFrameworkSymbols.py
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4222
diff changeset
569 }
c5ca798b158a CheckOrthancFrameworkSymbols.py
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4222
diff changeset
570
c5ca798b158a CheckOrthancFrameworkSymbols.py
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4222
diff changeset
571
c5ca798b158a CheckOrthancFrameworkSymbols.py
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4222
diff changeset
572 uint64_t DicomStreamReader::GetProcessedBytes() const
c5ca798b158a CheckOrthancFrameworkSymbols.py
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4222
diff changeset
573 {
c5ca798b158a CheckOrthancFrameworkSymbols.py
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4222
diff changeset
574 return reader_.GetProcessedBytes();
c5ca798b158a CheckOrthancFrameworkSymbols.py
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4222
diff changeset
575 }
4493
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
576
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
577
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
578 class DicomStreamReader::PixelDataVisitor : public DicomStreamReader::IVisitor
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
579 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
580 private:
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
581 bool hasPixelData_;
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
582 uint64_t pixelDataOffset_;
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
583
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
584 public:
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
585 PixelDataVisitor() :
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
586 hasPixelData_(false),
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
587 pixelDataOffset_(0)
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
588 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
589 }
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
590
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
591 virtual void VisitMetaHeaderTag(const DicomTag& tag,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
592 const ValueRepresentation& vr,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
593 const std::string& value) ORTHANC_OVERRIDE
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
594 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
595 }
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
596
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
597 virtual void VisitTransferSyntax(DicomTransferSyntax transferSyntax) ORTHANC_OVERRIDE
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
598 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
599 }
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
600
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
601 virtual bool VisitDatasetTag(const DicomTag& tag,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
602 const ValueRepresentation& vr,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
603 const std::string& value,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
604 bool isLittleEndian,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
605 uint64_t fileOffset) ORTHANC_OVERRIDE
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
606 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
607 if (tag == DICOM_TAG_PIXEL_DATA)
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
608 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
609 hasPixelData_ = true;
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
610 pixelDataOffset_ = fileOffset;
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
611 }
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
612
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
613 // Stop processing once pixel data has been passed
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
614 return (tag < DICOM_TAG_PIXEL_DATA);
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
615 }
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
616
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
617 bool HasPixelData() const
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
618 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
619 return hasPixelData_;
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
620 }
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
621
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
622 uint64_t GetPixelDataOffset() const
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
623 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
624 return pixelDataOffset_;
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
625 }
4494
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
626
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
627 static bool LookupPixelDataOffset(uint64_t& offset,
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
628 std::istream& stream)
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
629 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
630 PixelDataVisitor visitor;
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
631 bool isLittleEndian;
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
632
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
633 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
634 DicomStreamReader reader(stream);
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
635
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
636 try
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
637 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
638 reader.Consume(visitor);
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
639 isLittleEndian = reader.IsLittleEndian();
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
640 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
641 catch (OrthancException& e)
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
642 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
643 // Invalid DICOM file
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
644 return false;
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
645 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
646 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
647
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
648 if (visitor.HasPixelData())
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
649 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
650 // Sanity check if we face an unsupported DICOM file: Make
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
651 // sure that we can read DICOM_TAG_PIXEL_DATA at the reported
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
652 // position in the stream
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
653 stream.seekg(visitor.GetPixelDataOffset(), stream.beg);
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
654
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
655 std::string s;
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
656 s.resize(4);
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
657 stream.read(&s[0], s.size());
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
658
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
659 if (!isLittleEndian)
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
660 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
661 // Byte swapping if reading a file whose transfer syntax is
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
662 // 1.2.840.10008.1.2.2 (big endian explicit)
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
663 std::swap(s[0], s[1]);
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
664 std::swap(s[2], s[3]);
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
665 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
666
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
667 if (stream.gcount() == static_cast<std::streamsize>(s.size()) &&
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
668 s[0] == char(0xe0) &&
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
669 s[1] == char(0x7f) &&
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
670 s[2] == char(0x10) &&
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
671 s[3] == char(0x00))
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
672 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
673 offset = visitor.GetPixelDataOffset();
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
674 return true;
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
675 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
676 else
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
677 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
678 return false;
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
679 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
680 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
681 else
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
682 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
683 return false;
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
684 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
685 }
4493
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
686 };
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
687
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
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688
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
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689 bool DicomStreamReader::LookupPixelDataOffset(uint64_t& offset,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
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690 const std::string& dicom)
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
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691 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
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692 std::stringstream stream(dicom);
4494
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Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
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693 return PixelDataVisitor::LookupPixelDataOffset(offset, stream);
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
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694 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
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695
4493
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
diff changeset
696
4494
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
697 bool DicomStreamReader::LookupPixelDataOffset(uint64_t& offset,
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
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698 const void* buffer,
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
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699 size_t size)
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
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700 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
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701 boost::iostreams::array_source source(reinterpret_cast<const char*>(buffer), size);
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
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702 boost::iostreams::stream<boost::iostreams::array_source> stream(source);
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
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703 return PixelDataVisitor::LookupPixelDataOffset(offset, stream);
4493
b57ca702a430 DicomStreamReader::LookupPixelDataOffset()
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4437
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704 }
4220
92a21efa5c96 reorganization of DicomStreamReader
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
705 }
4494
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset"
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 4493
diff changeset
706