orthanc: OrthancFramework/Sources/DicomFormat/DicomStreamReader.cpp annotate

annotate OrthancFramework/Sources/DicomFormat/DicomStreamReader.cpp @ 4819:70d2a97ca8cb openssl-3.x

integration mainline->openssl-3.x

author	Sebastien Jodogne <s.jodogne@gmail.com>
date	Thu, 25 Nov 2021 13:12:32 +0100
parents	39192eb9b43d
children	7053502fbf97

rev	line source
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	1 /**
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	2 * Orthanc - A Lightweight, RESTful DICOM Store
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	4 * Department, University Hospital of Liege, Belgium
4437 d9473bd5ed43 upgrade to year 2021 Sebastien Jodogne <s.jodogne@gmail.com> parents: 4304 diff changeset	5 * Copyright (C) 2017-2021 Osimis S.A., Belgium
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	6 *
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	7 * This program is free software: you can redistribute it and/or
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	8 * modify it under the terms of the GNU Lesser General Public License
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	9 * as published by the Free Software Foundation, either version 3 of
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	10 * the License, or (at your option) any later version.
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	11 *
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	12 * This program is distributed in the hope that it will be useful, but
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	13 * WITHOUT ANY WARRANTY; without even the implied warranty of
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	15 * Lesser General Public License for more details.
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	16 *
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	17 * You should have received a copy of the GNU Lesser General Public
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	18 * License along with this program. If not, see
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	19 * <http://www.gnu.org/licenses/>.
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	20 **/
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	21
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	22
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	23 #include "../PrecompiledHeaders.h"
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	24 #include "DicomStreamReader.h"
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	25
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	26 #include "../OrthancException.h"
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	27
4304 50b0c69b653a continued abi Sebastien Jodogne <s.jodogne@gmail.com> parents: 4277 diff changeset	28 #include <cassert>
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	29 #include <sstream>
4494 39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	30 #include <boost/iostreams/device/array.hpp>
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	31 #include <boost/iostreams/stream.hpp>
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	32
4304 50b0c69b653a continued abi Sebastien Jodogne <s.jodogne@gmail.com> parents: 4277 diff changeset	33
4494 39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	34 #include <iostream>
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	35
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	36 namespace Orthanc
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	37 {
4221 e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	38 static bool IsNormalizationNeeded(const std::string& source,
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	39 ValueRepresentation vr)
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	40 {
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	41 return (!source.empty() &&
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	42 (source[source.size() - 1] == ' ' \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	43 source[source.size() - 1] == '\0') &&
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	44 // Normalization only applies to string-based VR
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	45 (vr == ValueRepresentation_ApplicationEntity \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	46 vr == ValueRepresentation_AgeString \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	47 vr == ValueRepresentation_CodeString \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	48 vr == ValueRepresentation_DecimalString \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	49 vr == ValueRepresentation_IntegerString \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	50 vr == ValueRepresentation_LongString \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	51 vr == ValueRepresentation_LongText \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	52 vr == ValueRepresentation_PersonName \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	53 vr == ValueRepresentation_ShortString \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	54 vr == ValueRepresentation_ShortText \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	55 vr == ValueRepresentation_UniqueIdentifier \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	56 vr == ValueRepresentation_UnlimitedText));
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	57 }
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	58
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	59
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	60 static void NormalizeValue(std::string& inplace,
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	61 ValueRepresentation vr)
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	62 {
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	63 if (IsNormalizationNeeded(inplace, vr))
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	64 {
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	65 assert(!inplace.empty());
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	66 inplace.resize(inplace.size() - 1);
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	67 }
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	68 }
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	69
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	70
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	71 static uint16_t ReadUnsignedInteger16(const char* dicom,
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	72 bool littleEndian)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	73 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	74 const uint8_t* p = reinterpret_cast<const uint8_t*>(dicom);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	75
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	76 if (littleEndian)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	77 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	78 return (static_cast<uint16_t>(p[0]) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	79 (static_cast<uint16_t>(p[1]) << 8));
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	80 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	81 else
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	82 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	83 return (static_cast<uint16_t>(p[1]) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	84 (static_cast<uint16_t>(p[0]) << 8));
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	85 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	86 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	87
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	88
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	89 static uint32_t ReadUnsignedInteger32(const char* dicom,
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	90 bool littleEndian)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	91 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	92 const uint8_t* p = reinterpret_cast<const uint8_t*>(dicom);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	93
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	94 if (littleEndian)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	95 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	96 return (static_cast<uint32_t>(p[0]) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	97 (static_cast<uint32_t>(p[1]) << 8) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	98 (static_cast<uint32_t>(p[2]) << 16) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	99 (static_cast<uint32_t>(p[3]) << 24));
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	100 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	101 else
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	102 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	103 return (static_cast<uint32_t>(p[3]) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	104 (static_cast<uint32_t>(p[2]) << 8) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	105 (static_cast<uint32_t>(p[1]) << 16) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	106 (static_cast<uint32_t>(p[0]) << 24));
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	107 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	108 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	109
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	110
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	111 static DicomTag ReadTag(const char* dicom,
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	112 bool littleEndian)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	113 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	114 return DicomTag(ReadUnsignedInteger16(dicom, littleEndian),
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	115 ReadUnsignedInteger16(dicom + 2, littleEndian));
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	116 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	117
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	118
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	119 static bool IsShortExplicitTag(ValueRepresentation vr)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	120 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	121 /**
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	122 * Are we in the case of Table 7.1-2? "Data Element with
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	123 * Explicit VR of AE, AS, AT, CS, DA, DS, DT, FL, FD, IS, LO,
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	124 * LT, PN, SH, SL, SS, ST, TM, UI, UL and US"
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	125 * http://dicom.nema.org/medical/dicom/current/output/chtml/part05/chapter_7.html#sect_7.1.2
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	126 **/
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	127 return (vr == ValueRepresentation_ApplicationEntity /* AE */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	128 vr == ValueRepresentation_AgeString /* AS */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	129 vr == ValueRepresentation_AttributeTag /* AT */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	130 vr == ValueRepresentation_CodeString /* CS */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	131 vr == ValueRepresentation_Date /* DA */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	132 vr == ValueRepresentation_DecimalString /* DS */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	133 vr == ValueRepresentation_DateTime /* DT */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	134 vr == ValueRepresentation_FloatingPointSingle /* FL */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: 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 Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	153 return (transferSyntax_ != DicomTransferSyntax_BigEndianExplicit);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	154 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	155
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	156
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	157 void DicomStreamReader::HandlePreamble(IVisitor& visitor,
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	158 const std::string& block)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	159 {
92a21efa5c96 reorganization of DicomStreamReader 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> parents: diff changeset	163 /**
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	164 * The "DICOM file meta information" is always encoded using
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: 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 Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	167 **/
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: 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> parents: 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 Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	185
4221 e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	186
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> 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 Sebastien Jodogne <s.jodogne@gmail.com> 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 Sebastien Jodogne <s.jodogne@gmail.com> 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 diff changeset	688
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	689 bool DicomStreamReader::LookupPixelDataOffset(uint64_t& offset,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	690 const std::string& dicom)
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	691 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	692 std::stringstream stream(dicom);
4494 39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	693 return PixelDataVisitor::LookupPixelDataOffset(offset, stream);
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	694 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	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 diff changeset	698 const void* buffer,
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	699 size_t size)
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	700 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	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 diff changeset	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 diff changeset	703 return PixelDataVisitor::LookupPixelDataOffset(offset, stream);
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	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

Mercurial > hg > orthanc

annotate OrthancFramework/Sources/DicomFormat/DicomStreamReader.cpp @ 4819:70d2a97ca8cb openssl-3.x