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

annotate OrthancFramework/Sources/DicomFormat/DicomStreamReader.cpp @ 5520:d7c24c9c9448 pg-transactions

removed useless try/catch

author	Sebastien Jodogne <s.jodogne@gmail.com>
date	Tue, 30 Jan 2024 09:24:55 +0100
parents	48b8dae6dc77
children	f7adfb22e20e

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
5485 48b8dae6dc77 upgrade to year 2024 Sebastien Jodogne <s.jodogne@gmail.com> parents: 5324 diff changeset	5 * Copyright (C) 2017-2024 Osimis S.A., Belgium
48b8dae6dc77 upgrade to year 2024 Sebastien Jodogne <s.jodogne@gmail.com> parents: 5324 diff changeset	6 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	7 *
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	8 * This program is free software: you can redistribute it and/or
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	9 * 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	10 * as published by the Free Software Foundation, either version 3 of
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	11 * the License, or (at your option) any later version.
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	12 *
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	13 * 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	14 * WITHOUT ANY WARRANTY; without even the implied warranty of
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	16 * Lesser General Public License for more details.
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	17 *
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	18 * 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	19 * License along with this program. If not, see
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	20 * <http://www.gnu.org/licenses/>.
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	24 #include "../PrecompiledHeaders.h"
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	25 #include "DicomStreamReader.h"
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	26
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	27 #include "../OrthancException.h"
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	28
4304 50b0c69b653a continued abi Sebastien Jodogne <s.jodogne@gmail.com> parents: 4277 diff changeset	29 #include <cassert>
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	30 #include <sstream>
4494 39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	31 #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	32 #include <boost/iostreams/stream.hpp>
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	33
4304 50b0c69b653a continued abi Sebastien Jodogne <s.jodogne@gmail.com> parents: 4277 diff changeset	34
4494 39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	35 #include <iostream>
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	36
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	37 namespace Orthanc
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	38 {
4221 e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	39 static bool IsNormalizationNeeded(const std::string& source,
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	40 ValueRepresentation vr)
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	41 {
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	42 return (!source.empty() &&
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	43 (source[source.size() - 1] == ' ' \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	44 source[source.size() - 1] == '\0') &&
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	45 // Normalization only applies to string-based VR
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	46 (vr == ValueRepresentation_ApplicationEntity \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	47 vr == ValueRepresentation_AgeString \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	48 vr == ValueRepresentation_CodeString \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	49 vr == ValueRepresentation_DecimalString \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	50 vr == ValueRepresentation_IntegerString \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	51 vr == ValueRepresentation_LongString \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	52 vr == ValueRepresentation_LongText \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	53 vr == ValueRepresentation_PersonName \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	54 vr == ValueRepresentation_ShortString \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	55 vr == ValueRepresentation_ShortText \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	56 vr == ValueRepresentation_UniqueIdentifier \|\|
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	57 vr == ValueRepresentation_UnlimitedText));
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
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	61 static void NormalizeValue(std::string& inplace,
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	62 ValueRepresentation vr)
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	63 {
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	64 if (IsNormalizationNeeded(inplace, vr))
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	65 {
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	66 assert(!inplace.empty());
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	67 inplace.resize(inplace.size() - 1);
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
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	71
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	72 static uint16_t ReadUnsignedInteger16(const char* dicom,
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	73 bool littleEndian)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	74 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	75 const uint8_t* p = reinterpret_cast<const uint8_t*>(dicom);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	76
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	77 if (littleEndian)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	78 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	79 return (static_cast<uint16_t>(p[0]) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	80 (static_cast<uint16_t>(p[1]) << 8));
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	81 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	82 else
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	83 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	84 return (static_cast<uint16_t>(p[1]) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	85 (static_cast<uint16_t>(p[0]) << 8));
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	90 static uint32_t ReadUnsignedInteger32(const char* dicom,
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	91 bool littleEndian)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	92 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	93 const uint8_t* p = reinterpret_cast<const uint8_t*>(dicom);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	94
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	95 if (littleEndian)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	96 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	97 return (static_cast<uint32_t>(p[0]) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	98 (static_cast<uint32_t>(p[1]) << 8) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	99 (static_cast<uint32_t>(p[2]) << 16) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	100 (static_cast<uint32_t>(p[3]) << 24));
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	101 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	102 else
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	103 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	104 return (static_cast<uint32_t>(p[3]) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	105 (static_cast<uint32_t>(p[2]) << 8) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	106 (static_cast<uint32_t>(p[1]) << 16) \|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	107 (static_cast<uint32_t>(p[0]) << 24));
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	112 static DicomTag ReadTag(const char* dicom,
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	113 bool littleEndian)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	114 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	115 return DicomTag(ReadUnsignedInteger16(dicom, littleEndian),
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	116 ReadUnsignedInteger16(dicom + 2, littleEndian));
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	120 static bool IsShortExplicitTag(ValueRepresentation vr)
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 /**
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	123 * 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	124 * 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	125 * LT, PN, SH, SL, SS, ST, TM, UI, UL and US"
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	126 * 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	127 **/
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	128 return (vr == ValueRepresentation_ApplicationEntity /* AE */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	129 vr == ValueRepresentation_AgeString /* AS */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	130 vr == ValueRepresentation_AttributeTag /* AT */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	131 vr == ValueRepresentation_CodeString /* CS */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	132 vr == ValueRepresentation_Date /* DA */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	133 vr == ValueRepresentation_DecimalString /* DS */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	134 vr == ValueRepresentation_DateTime /* DT */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	135 vr == ValueRepresentation_FloatingPointSingle /* FL */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	136 vr == ValueRepresentation_FloatingPointDouble /* FD */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	137 vr == ValueRepresentation_IntegerString /* IS */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	138 vr == ValueRepresentation_LongString /* LO */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	139 vr == ValueRepresentation_LongText /* LT */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	140 vr == ValueRepresentation_PersonName /* PN */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	141 vr == ValueRepresentation_ShortString /* SH */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	142 vr == ValueRepresentation_SignedLong /* SL */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	143 vr == ValueRepresentation_SignedShort /* SS */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	144 vr == ValueRepresentation_ShortText /* ST */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	145 vr == ValueRepresentation_Time /* TM */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	146 vr == ValueRepresentation_UniqueIdentifier /* UI */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	147 vr == ValueRepresentation_UnsignedLong /* UL */ \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	148 vr == ValueRepresentation_UnsignedShort /* US */);
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	152 bool DicomStreamReader::IsLittleEndian() const
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	153 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	154 return (transferSyntax_ != DicomTransferSyntax_BigEndianExplicit);
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	158 void DicomStreamReader::HandlePreamble(IVisitor& visitor,
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	159 const std::string& block)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	160 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	161 assert(block.size() == 144u);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	162 assert(reader_.GetProcessedBytes() == 144u);
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 /**
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	165 * The "DICOM file meta information" is always encoded using
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	166 * "Explicit VR Little Endian Transfer Syntax"
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	167 * 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	168 **/
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	169 if (block[128] != 'D' \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	170 block[129] != 'I' \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	171 block[130] != 'C' \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	172 block[131] != 'M' \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	173 ReadTag(block.c_str() + 132, true) != DicomTag(0x0002, 0x0000) \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	174 block[136] != 'U' \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	175 block[137] != 'L' \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	176 ReadUnsignedInteger16(block.c_str() + 138, true) != 4)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	177 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	178 throw OrthancException(ErrorCode_BadFileFormat);
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	181 uint32_t length = ReadUnsignedInteger32(block.c_str() + 140, true);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	182
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	183 reader_.Schedule(length);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	184 state_ = State_MetaHeader;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	185 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	186
4221 e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	187
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	188 void DicomStreamReader::HandleMetaHeader(IVisitor& visitor,
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	189 const std::string& block)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	190 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	191 size_t pos = 0;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	192 const char* p = block.c_str();
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	193
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	194 bool hasTransferSyntax = false;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	195
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	196 while (pos + 8 <= block.size())
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	197 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	198 DicomTag tag = ReadTag(p + pos, true);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	199
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	200 ValueRepresentation vr = StringToValueRepresentation(std::string(p + pos + 4, 2), true);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	201
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	202 if (IsShortExplicitTag(vr))
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	203 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	204 uint16_t length = ReadUnsignedInteger16(p + pos + 6, true);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	205
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	206 std::string value;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	207 value.assign(p + pos + 8, length);
4221 e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	208 NormalizeValue(value, vr);
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	209
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	210 if (tag.GetGroup() == 0x0002)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	211 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	212 visitor.VisitMetaHeaderTag(tag, vr, value);
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	215 if (tag == DICOM_TAG_TRANSFER_SYNTAX_UID)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	216 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	217 if (LookupTransferSyntax(transferSyntax_, value))
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	218 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	219 hasTransferSyntax = true;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	220 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	221 else
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	222 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	223 throw OrthancException(ErrorCode_NotImplemented, "Unsupported transfer syntax: " + value);
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	227 pos += length + 8;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	228 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	229 else if (pos + 12 <= block.size())
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	230 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	231 uint16_t reserved = ReadUnsignedInteger16(p + pos + 6, true);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	232 if (reserved != 0)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	233 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	234 break;
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	237 uint32_t length = ReadUnsignedInteger32(p + pos + 8, true);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	238
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	239 if (tag.GetGroup() == 0x0002)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	240 {
4221 e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	241 std::string value;
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	242 value.assign(p + pos + 12, length);
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	243 NormalizeValue(value, vr);
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	244 visitor.VisitMetaHeaderTag(tag, vr, value);
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	247 pos += length + 12;
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	251 if (pos != block.size())
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	252 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	253 throw OrthancException(ErrorCode_BadFileFormat);
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	256 if (!hasTransferSyntax)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	257 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	258 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	259 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	260
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	261 visitor.VisitTransferSyntax(transferSyntax_);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	262
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	263 reader_.Schedule(8);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	264 state_ = State_DatasetTag;
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	268 void DicomStreamReader::HandleDatasetTag(const std::string& block,
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	269 const DicomTag& untilTag)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	270 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	271 static const DicomTag DICOM_TAG_SEQUENCE_ITEM(0xfffe, 0xe000);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	272 static const DicomTag DICOM_TAG_SEQUENCE_DELIMITATION_ITEM(0xfffe, 0xe00d);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	273 static const DicomTag DICOM_TAG_SEQUENCE_DELIMITATION_SEQUENCE(0xfffe, 0xe0dd);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	274
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	275 assert(block.size() == 8u);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	276
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	277 const bool littleEndian = IsLittleEndian();
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	278 DicomTag tag = ReadTag(block.c_str(), littleEndian);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	279
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	280 if (sequenceDepth_ == 0 &&
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	281 tag >= untilTag)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	282 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	283 state_ = State_Done;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	284 return;
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	287 if (tag == DICOM_TAG_SEQUENCE_ITEM \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	288 tag == DICOM_TAG_SEQUENCE_DELIMITATION_ITEM \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	289 tag == DICOM_TAG_SEQUENCE_DELIMITATION_SEQUENCE)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	290 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	291 // The special sequence items are encoded like "Implicit VR"
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	292 uint32_t length = ReadUnsignedInteger32(block.c_str() + 4, littleEndian);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	293
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	294 if (tag == DICOM_TAG_SEQUENCE_ITEM)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	295 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	296 if (length == 0xffffffffu)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	297 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	298 // 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	299 reader_.Schedule(8);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	300 state_ = State_DatasetTag;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	301 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	302 else
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	303 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	304 // Explicit length: Can skip the full sequence at once
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	305 reader_.Schedule(length);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	306 state_ = State_DatasetValue;
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 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	309 else if (tag == DICOM_TAG_SEQUENCE_DELIMITATION_ITEM \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	310 tag == DICOM_TAG_SEQUENCE_DELIMITATION_SEQUENCE)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	311 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	312 if (length != 0 \|\|
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	313 sequenceDepth_ == 0)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	314 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	315 throw OrthancException(ErrorCode_BadFileFormat);
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	318 if (tag == DICOM_TAG_SEQUENCE_DELIMITATION_SEQUENCE)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	319 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	320 sequenceDepth_ --;
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	323 reader_.Schedule(8);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	324 state_ = State_DatasetTag;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	325 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	326 else
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	327 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	328 throw OrthancException(ErrorCode_InternalError);
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 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	331 else
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	332 {
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	333 assert(reader_.GetProcessedBytes() >= block.size());
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	334 const uint64_t tagOffset = reader_.GetProcessedBytes() - block.size();
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	335
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	336 ValueRepresentation vr = ValueRepresentation_Unknown;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	337
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	338 if (transferSyntax_ == DicomTransferSyntax_LittleEndianImplicit)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	339 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	340 if (sequenceDepth_ == 0)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	341 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	342 danglingTag_ = tag;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	343 danglingVR_ = vr;
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	344 danglingOffset_ = tagOffset;
4220 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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	347 uint32_t length = ReadUnsignedInteger32(block.c_str() + 4, true /* little endian */);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	348 HandleDatasetExplicitLength(length);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	349 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	350 else
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	351 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	352 // This in an explicit transfer syntax
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	353
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	354 vr = StringToValueRepresentation(
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	355 std::string(block.c_str() + 4, 2), false /* ignore unknown VR */);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	356
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	357 if (vr == ValueRepresentation_Sequence)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	358 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	359 sequenceDepth_ ++;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	360 reader_.Schedule(4);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	361 state_ = State_SequenceExplicitLength;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	362 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	363 else if (IsShortExplicitTag(vr))
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	364 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	365 uint16_t length = ReadUnsignedInteger16(block.c_str() + 6, littleEndian);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	366
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	367 reader_.Schedule(length);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	368 state_ = State_DatasetValue;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	369 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	370 else
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	371 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	372 uint16_t reserved = ReadUnsignedInteger16(block.c_str() + 6, littleEndian);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	373 if (reserved != 0)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	374 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	375 throw OrthancException(ErrorCode_BadFileFormat);
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	378 reader_.Schedule(4);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	379 state_ = State_DatasetExplicitLength;
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	382 if (sequenceDepth_ == 0)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	383 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	384 danglingTag_ = tag;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	385 danglingVR_ = vr;
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	386 danglingOffset_ = tagOffset;
4220 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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	393 void DicomStreamReader::HandleDatasetExplicitLength(uint32_t length)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	394 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	395 if (length == 0xffffffffu)
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 /**
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	398 * This is the case of pixel data with compressed transfer
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	399 * syntaxes. Schedule the reading of the first tag of the
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	400 * nested dataset.
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	401 * 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	402 **/
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	403 state_ = State_DatasetTag;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	404 reader_.Schedule(8);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	405 sequenceDepth_ ++;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	406 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	407 else
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	408 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	409 reader_.Schedule(length);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	410 state_ = State_DatasetValue;
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	414
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	415 void DicomStreamReader::HandleDatasetExplicitLength(IVisitor& visitor,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	416 const std::string& block)
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	417 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	418 assert(block.size() == 4);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	419
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	420 uint32_t length = ReadUnsignedInteger32(block.c_str(), IsLittleEndian());
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	421 HandleDatasetExplicitLength(length);
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	422
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	423 std::string empty;
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	424 if (!visitor.VisitDatasetTag(danglingTag_, danglingVR_, empty, IsLittleEndian(), danglingOffset_))
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	425 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	426 state_ = State_Done;
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	427 }
4220 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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	431 void DicomStreamReader::HandleSequenceExplicitLength(const std::string& block)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	432 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	433 assert(block.size() == 4);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	434
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	435 uint32_t length = ReadUnsignedInteger32(block.c_str(), IsLittleEndian());
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	436 if (length == 0xffffffffu)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	437 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	438 state_ = State_DatasetTag;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	439 reader_.Schedule(8);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	440 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	441 else
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	442 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	443 reader_.Schedule(length);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	444 state_ = State_SequenceExplicitValue;
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	449 void DicomStreamReader::HandleSequenceExplicitValue()
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	450 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	451 if (sequenceDepth_ == 0)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	452 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	453 throw OrthancException(ErrorCode_InternalError);
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	456 sequenceDepth_ --;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	457
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	458 state_ = State_DatasetTag;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	459 reader_.Schedule(8);
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	463 void DicomStreamReader::HandleDatasetValue(IVisitor& visitor,
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	464 const std::string& block)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	465 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	466 if (sequenceDepth_ == 0)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	467 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	468 bool c;
4221 e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	469
e4c0218b6b23 better normalization in stream reader Sebastien Jodogne <s.jodogne@gmail.com> parents: 4220 diff changeset	470 if (IsNormalizationNeeded(block, danglingVR_))
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	471 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	472 std::string s(block.begin(), block.end() - 1);
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	473 c = visitor.VisitDatasetTag(danglingTag_, danglingVR_, s, IsLittleEndian(), danglingOffset_);
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	474 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	475 else
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	476 {
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	477 c = visitor.VisitDatasetTag(danglingTag_, danglingVR_, block, IsLittleEndian(), danglingOffset_);
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	478 }
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	479
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	480 if (!c)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	481 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	482 state_ = State_Done;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	483 return;
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	487 reader_.Schedule(8);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	488 state_ = State_DatasetTag;
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	492 DicomStreamReader::DicomStreamReader(std::istream& stream) :
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	493 reader_(stream),
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	494 state_(State_Preamble),
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	495 transferSyntax_(DicomTransferSyntax_LittleEndianImplicit), // Dummy
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	496 danglingTag_(0x0000, 0x0000), // Dummy
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	497 danglingVR_(ValueRepresentation_Unknown), // Dummy
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	498 danglingOffset_(0), // Dummy
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	499 sequenceDepth_(0)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	500 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	501 reader_.Schedule(128 /* empty header */ +
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	502 4 /* "DICM" magic value */ +
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	503 4 /* (0x0002, 0x0000) tag */ +
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	504 2 /* value representation of (0x0002, 0x0000) == "UL" */ +
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	505 2 /* length of "UL" value == 4 */ +
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	506 4 /* actual length of the meta-header */);
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	510 void DicomStreamReader::Consume(IVisitor& visitor,
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	511 const DicomTag& untilTag)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	512 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	513 while (state_ != State_Done)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	514 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	515 std::string block;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	516 if (reader_.Read(block))
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	517 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	518 switch (state_)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	519 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	520 case State_Preamble:
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	521 HandlePreamble(visitor, block);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	522 break;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	523
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	524 case State_MetaHeader:
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	525 HandleMetaHeader(visitor, block);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	526 break;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	527
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	528 case State_DatasetTag:
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	529 HandleDatasetTag(block, untilTag);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	530 break;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	531
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	532 case State_DatasetExplicitLength:
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	533 HandleDatasetExplicitLength(visitor, block);
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	534 break;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	535
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	536 case State_SequenceExplicitLength:
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	537 HandleSequenceExplicitLength(block);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	538 break;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	539
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	540 case State_SequenceExplicitValue:
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	541 HandleSequenceExplicitValue();
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	542 break;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	543
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	544 case State_DatasetValue:
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	545 HandleDatasetValue(visitor, block);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	546 break;
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	547
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	548 default:
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	549 throw OrthancException(ErrorCode_InternalError);
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 }
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	552 else
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	553 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	554 return; // No more data in the stream
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
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	560 void DicomStreamReader::Consume(IVisitor& visitor)
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	561 {
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	562 DicomTag untilTag(0xffff, 0xffff);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	563 Consume(visitor, untilTag);
92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	564 }
4277 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
c5ca798b158a CheckOrthancFrameworkSymbols.py Sebastien Jodogne <s.jodogne@gmail.com> parents: 4222 diff changeset	567 bool DicomStreamReader::IsDone() const
c5ca798b158a CheckOrthancFrameworkSymbols.py Sebastien Jodogne <s.jodogne@gmail.com> parents: 4222 diff changeset	568 {
c5ca798b158a CheckOrthancFrameworkSymbols.py Sebastien Jodogne <s.jodogne@gmail.com> parents: 4222 diff changeset	569 return (state_ == State_Done);
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
c5ca798b158a CheckOrthancFrameworkSymbols.py Sebastien Jodogne <s.jodogne@gmail.com> parents: 4222 diff changeset	573 uint64_t DicomStreamReader::GetProcessedBytes() const
c5ca798b158a CheckOrthancFrameworkSymbols.py Sebastien Jodogne <s.jodogne@gmail.com> parents: 4222 diff changeset	574 {
c5ca798b158a CheckOrthancFrameworkSymbols.py Sebastien Jodogne <s.jodogne@gmail.com> parents: 4222 diff changeset	575 return reader_.GetProcessedBytes();
c5ca798b158a CheckOrthancFrameworkSymbols.py Sebastien Jodogne <s.jodogne@gmail.com> parents: 4222 diff changeset	576 }
4493 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
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	579 class DicomStreamReader::PixelDataVisitor : public DicomStreamReader::IVisitor
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	580 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	581 private:
5316 03501a258d9e added instance metadata "PixelDataVR" Sebastien Jodogne <s.jodogne@gmail.com> parents: 5185 diff changeset	582 bool hasPixelData_;
03501a258d9e added instance metadata "PixelDataVR" Sebastien Jodogne <s.jodogne@gmail.com> parents: 5185 diff changeset	583 uint64_t pixelDataOffset_;
03501a258d9e added instance metadata "PixelDataVR" Sebastien Jodogne <s.jodogne@gmail.com> parents: 5185 diff changeset	584 ValueRepresentation pixelDataVR_;
5324 e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	585 DicomTransferSyntax transferSyntax_;
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	586
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	587 public:
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	588 PixelDataVisitor() :
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	589 hasPixelData_(false),
5316 03501a258d9e added instance metadata "PixelDataVR" Sebastien Jodogne <s.jodogne@gmail.com> parents: 5185 diff changeset	590 pixelDataOffset_(0),
5324 e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	591 pixelDataVR_(ValueRepresentation_Unknown),
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	592 transferSyntax_(DicomTransferSyntax_LittleEndianImplicit) // Default DICOM transfer syntax
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	593 {
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 virtual void VisitMetaHeaderTag(const DicomTag& tag,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	597 const ValueRepresentation& vr,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	598 const std::string& value) ORTHANC_OVERRIDE
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
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	602 virtual void VisitTransferSyntax(DicomTransferSyntax transferSyntax) ORTHANC_OVERRIDE
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	603 {
5324 e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	604 transferSyntax_ = transferSyntax;
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	605 }
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 virtual bool VisitDatasetTag(const DicomTag& tag,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	608 const ValueRepresentation& vr,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	609 const std::string& value,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	610 bool isLittleEndian,
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	611 uint64_t fileOffset) ORTHANC_OVERRIDE
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 if (tag == DICOM_TAG_PIXEL_DATA)
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	614 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	615 hasPixelData_ = true;
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	616 pixelDataOffset_ = fileOffset;
5324 e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	617
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	618 if (transferSyntax_ == DicomTransferSyntax_LittleEndianImplicit)
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	619 {
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	620 // Implicit Little Endian has always "OW" VR for pixel data
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	621 // https://dicom.nema.org/medical/dicom/current/output/chtml/part05/chapter_A.html
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	622 pixelDataVR_ = ValueRepresentation_OtherWord;
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	623 }
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	624 else if (transferSyntax_ == DicomTransferSyntax_LittleEndianExplicit \|\|
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	625 transferSyntax_ == DicomTransferSyntax_BigEndianExplicit)
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	626 {
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	627 pixelDataVR_ = vr;
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	628 }
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	629 else
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	630 {
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	631 // Compressed transfer syntaxes must always be OB
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	632 pixelDataVR_ = ValueRepresentation_OtherByte;
e95caa87fed8 only store PixelDataVR metadata if needed Sebastien Jodogne <s.jodogne@gmail.com> parents: 5316 diff changeset	633 }
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	634 }
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	635
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	636 // Stop processing once pixel data has been passed
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	637 return (tag < DICOM_TAG_PIXEL_DATA);
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	638 }
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	639
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	640 bool HasPixelData() const
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	641 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	642 return hasPixelData_;
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	643 }
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	644
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	645 uint64_t GetPixelDataOffset() const
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	646 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	647 return pixelDataOffset_;
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	648 }
4494 39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	649
5316 03501a258d9e added instance metadata "PixelDataVR" Sebastien Jodogne <s.jodogne@gmail.com> parents: 5185 diff changeset	650 ValueRepresentation GetPixelDataVR() const
03501a258d9e added instance metadata "PixelDataVR" Sebastien Jodogne <s.jodogne@gmail.com> parents: 5185 diff changeset	651 {
03501a258d9e added instance metadata "PixelDataVR" Sebastien Jodogne <s.jodogne@gmail.com> parents: 5185 diff changeset	652 return pixelDataVR_;
03501a258d9e added instance metadata "PixelDataVR" Sebastien Jodogne <s.jodogne@gmail.com> parents: 5185 diff changeset	653 }
03501a258d9e added instance metadata "PixelDataVR" Sebastien Jodogne <s.jodogne@gmail.com> parents: 5185 diff changeset	654
4494 39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	655 static bool LookupPixelDataOffset(uint64_t& offset,
5316 03501a258d9e added instance metadata "PixelDataVR" Sebastien Jodogne <s.jodogne@gmail.com> parents: 5185 diff changeset	656 ValueRepresentation& vr,
4494 39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	657 std::istream& stream)
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 PixelDataVisitor visitor;
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	660 bool isLittleEndian;
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	661
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	662 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	663 DicomStreamReader reader(stream);
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	664
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	665 try
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 reader.Consume(visitor);
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	668 isLittleEndian = reader.IsLittleEndian();
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	669 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	670 catch (OrthancException& e)
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	671 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	672 // Invalid DICOM file
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	673 return false;
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	674 }
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
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	677 if (visitor.HasPixelData())
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	678 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	679 // 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	680 // 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	681 // position in the stream
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	682 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	683
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	684 std::string s;
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	685 s.resize(4);
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	686 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	687
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	688 if (!isLittleEndian)
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	689 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	690 // 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	691 // 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	692 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	693 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	694 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	695
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	696 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	697 s[0] == char(0xe0) &&
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	698 s[1] == char(0x7f) &&
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	699 s[2] == char(0x10) &&
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	700 s[3] == char(0x00))
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	701 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	702 offset = visitor.GetPixelDataOffset();
5316 03501a258d9e added instance metadata "PixelDataVR" Sebastien Jodogne <s.jodogne@gmail.com> parents: 5185 diff changeset	703 vr = visitor.GetPixelDataVR();
4494 39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	704 return true;
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	705 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	706 else
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	707 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	708 return false;
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	709 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	710 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	711 else
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	712 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	713 return false;
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	714 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	715 }
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	716 };
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	717
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	718
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	719 bool DicomStreamReader::LookupPixelDataOffset(uint64_t& offset,
5316 03501a258d9e added instance metadata "PixelDataVR" Sebastien Jodogne <s.jodogne@gmail.com> parents: 5185 diff changeset	720 ValueRepresentation& vr,
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	721 const std::string& dicom)
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	722 {
b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	723 std::stringstream stream(dicom);
5316 03501a258d9e added instance metadata "PixelDataVR" Sebastien Jodogne <s.jodogne@gmail.com> parents: 5185 diff changeset	724 return PixelDataVisitor::LookupPixelDataOffset(offset, vr, stream);
4494 39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	725 }
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	726
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	727
4494 39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	728 bool DicomStreamReader::LookupPixelDataOffset(uint64_t& offset,
5316 03501a258d9e added instance metadata "PixelDataVR" Sebastien Jodogne <s.jodogne@gmail.com> parents: 5185 diff changeset	729 ValueRepresentation& vr,
4494 39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	730 const void* buffer,
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	731 size_t size)
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	732 {
39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	733 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	734 boost::iostreams::stream<boost::iostreams::array_source> stream(source);
5316 03501a258d9e added instance metadata "PixelDataVR" Sebastien Jodogne <s.jodogne@gmail.com> parents: 5185 diff changeset	735 return PixelDataVisitor::LookupPixelDataOffset(offset, vr, stream);
4493 b57ca702a430 DicomStreamReader::LookupPixelDataOffset() Sebastien Jodogne <s.jodogne@gmail.com> parents: 4437 diff changeset	736 }
4220 92a21efa5c96 reorganization of DicomStreamReader Sebastien Jodogne <s.jodogne@gmail.com> parents: diff changeset	737 }
4494 39192eb9b43d New metadata automatically computed at the instance level: "PixelDataOffset" Sebastien Jodogne <s.jodogne@gmail.com> parents: 4493 diff changeset	738

Mercurial > hg > orthanc

annotate OrthancFramework/Sources/DicomFormat/DicomStreamReader.cpp @ 5520:d7c24c9c9448 pg-transactions