1 /*=========================================================================
4 Module: $RCSfile: gdcmFile.cxx,v $
6 Date: $Date: 2005/05/29 21:56:36 $
7 Version: $Revision: 1.239 $
9 Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
10 l'Image). All rights reserved. See Doc/License.txt or
11 http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
13 This software is distributed WITHOUT ANY WARRANTY; without even
14 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 PURPOSE. See the above copyright notices for more information.
17 =========================================================================*/
20 // -------------- Remember ! ----------------------------------
22 // Image Position Patient (0020,0032):
23 // If not found (ACR_NEMA) we try Image Position (0020,0030)
24 // If not found (ACR-NEMA), we consider Slice Location (0020,1041)
25 // or Location (0020,0050)
26 // as the Z coordinate,
27 // 0. for all the coordinates if nothing is found
29 // ---------------------------------------------------------------
32 #include "gdcmGlobal.h"
34 #include "gdcmDebug.h"
36 #include "gdcmValEntry.h"
37 #include "gdcmBinEntry.h"
38 #include "gdcmSeqEntry.h"
39 #include "gdcmRLEFramesInfo.h"
40 #include "gdcmJPEGFragmentsInfo.h"
42 #include <stdio.h> //sscanf
47 //-----------------------------------------------------------------------------
48 // Constructor / Destructor
51 * \brief Constructor used when we want to generate dicom files from scratch
56 RLEInfo = new RLEFramesInfo;
57 JPEGInfo = new JPEGFragmentsInfo;
64 * @param filename name of the file whose header we want to analyze
66 File::File( std::string const &filename )
69 RLEInfo = new RLEFramesInfo;
70 JPEGInfo = new JPEGFragmentsInfo;
72 // for some ACR-NEMA images GrPixel, NumPixel is *not* 7fe0,0010
73 // We may encounter the 'RETired' (0x0028, 0x0200) tag
74 // (Image Location") . This entry contains the number of
75 // the group that contains the pixel data (hence the "Pixel Data"
76 // is found by indirection through the "Image Location").
77 // Inside the group pointed by "Image Location" the searched element
78 // is conventionally the element 0x0010 (when the norm is respected).
79 // When the "Image Location" is missing we default to group 0x7fe0.
80 // Note: this IS the right place for the code
83 const std::string &imgLocation = GetEntryValue(0x0028, 0x0200);
84 if ( imgLocation == GDCM_UNFOUND )
91 GrPixel = (uint16_t) atoi( imgLocation.c_str() );
94 // sometimes Image Location value doesn't follow
95 // the supposed processor endianness.
96 // see gdcmData/cr172241.dcm
97 if ( GrPixel == 0xe07f )
102 if ( GrPixel != 0x7fe0 )
104 // This is a kludge for old dirty Philips imager.
112 // Now, we know GrPixel and NumPixel.
113 // Let's create a VirtualDictEntry to allow a further VR modification
114 // and force VR to match with BitsAllocated.
115 DocEntry *entry = GetDocEntry(GrPixel, NumPixel);
118 // Compute the RLE or JPEG info
120 const std::string &ts = GetTransferSyntax();
121 Fp->seekg( entry->GetOffset(), std::ios::beg );
122 if ( Global::GetTS()->IsRLELossless(ts) )
124 else if ( Global::GetTS()->IsJPEG(ts) )
125 ComputeJPEGFragmentInfo();
128 // Create a new BinEntry to change the the DictEntry
129 // The changed DictEntry will have
130 // - a correct PixelVR OB or OW)
131 // - the name to "Pixel Data"
132 BinEntry *oldEntry = dynamic_cast<BinEntry *>(entry);
136 // 8 bits allocated is a 'O Bytes' , as well as 24 (old ACR-NEMA RGB)
137 // more than 8 (i.e 12, 16) is a 'O Words'
138 if ( GetBitsAllocated() == 8 || GetBitsAllocated() == 24 )
143 // Change only made if usefull
144 if( PixelVR != oldEntry->GetVR() )
146 DictEntry* newDict = NewVirtualDictEntry(GrPixel,NumPixel,
147 PixelVR,"1","Pixel Data");
149 BinEntry *newEntry = new BinEntry(newDict);
150 newEntry->Copy(entry);
151 newEntry->SetBinArea(oldEntry->GetBinArea(),oldEntry->IsSelfArea());
152 oldEntry->SetSelfArea(false);
154 RemoveEntry(oldEntry);
163 * \brief Canonical destructor.
173 //-----------------------------------------------------------------------------
178 * \brief This predicate, based on hopefully reasonable heuristics,
179 * decides whether or not the current File was properly parsed
180 * and contains the mandatory information for being considered as
181 * a well formed and usable Dicom/Acr File.
182 * @return true when File is the one of a reasonable Dicom/Acr file,
185 bool File::IsReadable()
187 if( !Document::IsReadable() )
192 const std::string &res = GetEntryValue(0x0028, 0x0005);
193 if ( res != GDCM_UNFOUND && atoi(res.c_str()) > 4 )
195 return false; // Image Dimensions
197 if ( !GetDocEntry(0x0028, 0x0100) )
199 return false; // "Bits Allocated"
201 if ( !GetDocEntry(0x0028, 0x0101) )
203 return false; // "Bits Stored"
205 if ( !GetDocEntry(0x0028, 0x0102) )
207 return false; // "High Bit"
209 if ( !GetDocEntry(0x0028, 0x0103) )
211 return false; // "Pixel Representation" i.e. 'Sign'
218 * \brief gets the info from 0020,0013 : Image Number else 0.
219 * @return image number
221 int File::GetImageNumber()
223 //0020 0013 : Image Number
224 std::string strImNumber = GetEntryValue(0x0020,0x0013);
225 if ( strImNumber != GDCM_UNFOUND )
227 return atoi( strImNumber.c_str() );
233 * \brief gets the info from 0008,0060 : Modality
234 * @return Modality Type
236 ModalityType File::GetModality()
238 // 0008 0060 : Modality
239 std::string strModality = GetEntryValue(0x0008,0x0060);
240 if ( strModality != GDCM_UNFOUND )
242 if ( strModality.find("AU") < strModality.length()) return AU;
243 else if ( strModality.find("AS") < strModality.length()) return AS;
244 else if ( strModality.find("BI") < strModality.length()) return BI;
245 else if ( strModality.find("CF") < strModality.length()) return CF;
246 else if ( strModality.find("CP") < strModality.length()) return CP;
247 else if ( strModality.find("CR") < strModality.length()) return CR;
248 else if ( strModality.find("CT") < strModality.length()) return CT;
249 else if ( strModality.find("CS") < strModality.length()) return CS;
250 else if ( strModality.find("DD") < strModality.length()) return DD;
251 else if ( strModality.find("DF") < strModality.length()) return DF;
252 else if ( strModality.find("DG") < strModality.length()) return DG;
253 else if ( strModality.find("DM") < strModality.length()) return DM;
254 else if ( strModality.find("DS") < strModality.length()) return DS;
255 else if ( strModality.find("DX") < strModality.length()) return DX;
256 else if ( strModality.find("ECG") < strModality.length()) return ECG;
257 else if ( strModality.find("EPS") < strModality.length()) return EPS;
258 else if ( strModality.find("FA") < strModality.length()) return FA;
259 else if ( strModality.find("FS") < strModality.length()) return FS;
260 else if ( strModality.find("HC") < strModality.length()) return HC;
261 else if ( strModality.find("HD") < strModality.length()) return HD;
262 else if ( strModality.find("LP") < strModality.length()) return LP;
263 else if ( strModality.find("LS") < strModality.length()) return LS;
264 else if ( strModality.find("MA") < strModality.length()) return MA;
265 else if ( strModality.find("MR") < strModality.length()) return MR;
266 else if ( strModality.find("NM") < strModality.length()) return NM;
267 else if ( strModality.find("OT") < strModality.length()) return OT;
268 else if ( strModality.find("PT") < strModality.length()) return PT;
269 else if ( strModality.find("RF") < strModality.length()) return RF;
270 else if ( strModality.find("RG") < strModality.length()) return RG;
271 else if ( strModality.find("RTDOSE")
272 < strModality.length()) return RTDOSE;
273 else if ( strModality.find("RTIMAGE")
274 < strModality.length()) return RTIMAGE;
275 else if ( strModality.find("RTPLAN")
276 < strModality.length()) return RTPLAN;
277 else if ( strModality.find("RTSTRUCT")
278 < strModality.length()) return RTSTRUCT;
279 else if ( strModality.find("SM") < strModality.length()) return SM;
280 else if ( strModality.find("ST") < strModality.length()) return ST;
281 else if ( strModality.find("TG") < strModality.length()) return TG;
282 else if ( strModality.find("US") < strModality.length()) return US;
283 else if ( strModality.find("VF") < strModality.length()) return VF;
284 else if ( strModality.find("XA") < strModality.length()) return XA;
285 else if ( strModality.find("XC") < strModality.length()) return XC;
289 /// \todo throw error return value ???
290 /// specified <> unknown in our database
299 * \brief Retrieve the number of columns of image.
300 * @return The encountered size when found, 0 by default.
301 * 0 means the file is NOT USABLE. The caller will have to check
305 const std::string &strSize = GetEntryValue(0x0028,0x0011);
306 if ( strSize == GDCM_UNFOUND )
311 return atoi( strSize.c_str() );
315 * \brief Retrieve the number of lines of image.
316 * \warning The defaulted value is 1 as opposed to File::GetXSize()
317 * @return The encountered size when found, 1 by default
318 * (The ACR-NEMA file contains a Signal, not an Image).
322 const std::string &strSize = GetEntryValue(0x0028,0x0010);
323 if ( strSize != GDCM_UNFOUND )
325 return atoi( strSize.c_str() );
332 // The Rows (0028,0010) entry was optional for ACR/NEMA. It might
333 // hence be a signal (1D image). So we default to 1:
338 * \brief Retrieve the number of planes of volume or the number
339 * of frames of a multiframe.
340 * \warning When present we consider the "Number of Frames" as the third
341 * dimension. When Missing we consider the third dimension as
342 * being the ACR-NEMA "Planes" tag content.
343 * @return The encountered size when found, 1 by default (single image).
347 // Both DicomV3 and ACR/Nema consider the "Number of Frames"
348 // as the third dimension.
349 const std::string &strSize = GetEntryValue(0x0028,0x0008);
350 if ( strSize != GDCM_UNFOUND )
352 return atoi( strSize.c_str() );
355 // We then consider the "Planes" entry as the third dimension
356 const std::string &strSize2 = GetEntryValue(0x0028,0x0012);
357 if ( strSize2 != GDCM_UNFOUND )
359 return atoi( strSize2.c_str() );
366 * \brief gets the info from 0028,0030 : Pixel Spacing
367 * (first in 0018,1164 : ImagerPixelSpacing)
369 * @return X dimension of a pixel
371 float File::GetXSpacing()
373 float xspacing = 1.0;
374 float yspacing = 1.0;
377 // To follow David Clunie's advice, we first check ImagerPixelSpacing
378 // (never saw any image with that field :-(
380 const std::string &strImagerPixelSpacing = GetEntryValue(0x0018,0x1164);
381 if( strImagerPixelSpacing != GDCM_UNFOUND )
383 if( ( nbValues = sscanf( strImagerPixelSpacing.c_str(),
384 "%f\\%f", &yspacing, &xspacing)) != 2 )
386 // if no values, xspacing is set to 1.0
389 // if single value is found, xspacing is defaulted to yspacing
393 if ( xspacing == 0.0 )
401 const std::string &strSpacing = GetEntryValue(0x0028,0x0030);
403 if( strSpacing == GDCM_UNFOUND )
405 gdcmWarningMacro( "Unfound Pixel Spacing (0028,0030)" );
409 if( ( nbValues = sscanf( strSpacing.c_str(),
410 "%f \\%f ", &yspacing, &xspacing)) != 2 )
412 // if no values, xspacing is set to 1.0
415 // if single value is found, xspacing is defaulted to yspacing
419 if ( xspacing == 0.0 )
426 // to avoid troubles with David Clunie's-like images
427 if ( xspacing == 0. && yspacing == 0.)
432 gdcmWarningMacro("gdcmData/CT-MONO2-8-abdo.dcm-like problem");
433 // seems to be a bug in the header ...
434 nbValues = sscanf( strSpacing.c_str(), "%f \\0\\%f ", &yspacing, &xspacing);
435 gdcmAssertMacro( nbValues == 2 );
442 * \brief gets the info from 0028,0030 : Pixel Spacing
443 * (first in 0018,1164 : ImagerPixelSpacing)
445 * @return Y dimension of a pixel
447 float File::GetYSpacing()
451 // To follow David Clunie's advice, we first check ImagerPixelSpacing
452 // (never saw any image with that field :-(
454 const std::string &strImagerPixelSpacing = GetEntryValue(0x0018,0x1164);
455 if( strImagerPixelSpacing != GDCM_UNFOUND )
457 nbValues = sscanf( strImagerPixelSpacing.c_str(), "%f", &yspacing);
459 // if sscanf cannot read any float value, it won't affect yspacing
463 if ( yspacing == 0.0 )
469 std::string strSpacing = GetEntryValue(0x0028,0x0030);
470 if ( strSpacing == GDCM_UNFOUND )
472 gdcmWarningMacro("Unfound Pixel Spacing (0028,0030)");
476 // if sscanf cannot read any float value, it won't affect yspacing
477 nbValues = sscanf( strSpacing.c_str(), "%f", &yspacing);
479 // if no values, yspacing is set to 1.0
483 if ( yspacing == 0.0 )
490 * \brief gets the info from 0018,0088 : Space Between Slices
491 * else from 0018,0050 : Slice Thickness
493 * @return Z dimension of a voxel-to be
495 float File::GetZSpacing()
497 // Spacing Between Slices : distance between the middle of 2 slices
499 // jointives (Spacing between Slices = Slice Thickness)
500 // overlapping (Spacing between Slices < Slice Thickness)
501 // disjointes (Spacing between Slices > Slice Thickness)
502 // Slice Thickness : epaisseur de tissus sur laquelle est acquis le signal
503 // It only concerns the MRI guys, not people wanting to visualize volmues
504 // If Spacing Between Slices is Missing,
505 // we suppose slices joint together
507 const std::string &strSpacingBSlices = GetEntryValue(0x0018,0x0088);
509 if ( strSpacingBSlices == GDCM_UNFOUND )
511 gdcmWarningMacro("Unfound Spacing Between Slices (0018,0088)");
512 const std::string &strSliceThickness = GetEntryValue(0x0018,0x0050);
513 if ( strSliceThickness == GDCM_UNFOUND )
515 gdcmWarningMacro("Unfound Slice Thickness (0018,0050)");
520 // if no 'Spacing Between Slices' is found,
521 // we assume slices join together
522 // (no overlapping, no interslice gap)
523 // if they don't, we're fucked up
524 return (float)atof( strSliceThickness.c_str() );
528 return (float)atof( strSpacingBSlices.c_str() );
532 * \brief gets the info from 0020,0032 : Image Position Patient
533 * else from 0020,0030 : Image Position (RET)
535 * @return up-left image corner X position
537 float File::GetXOrigin()
539 float xImPos, yImPos, zImPos;
540 std::string strImPos = GetEntryValue(0x0020,0x0032);
542 if ( strImPos == GDCM_UNFOUND )
544 gdcmWarningMacro( "Unfound Image Position Patient (0020,0032)");
545 strImPos = GetEntryValue(0x0020,0x0030); // For ACR-NEMA images
546 if ( strImPos == GDCM_UNFOUND )
548 gdcmWarningMacro( "Unfound Image Position (RET) (0020,0030)");
553 if( sscanf( strImPos.c_str(), "%f \\%f \\%f ", &xImPos, &yImPos, &zImPos) != 3 )
562 * \brief gets the info from 0020,0032 : Image Position Patient
563 * else from 0020,0030 : Image Position (RET)
565 * @return up-left image corner Y position
567 float File::GetYOrigin()
569 float xImPos, yImPos, zImPos;
570 std::string strImPos = GetEntryValue(0x0020,0x0032);
572 if ( strImPos == GDCM_UNFOUND)
574 gdcmWarningMacro( "Unfound Image Position Patient (0020,0032)");
575 strImPos = GetEntryValue(0x0020,0x0030); // For ACR-NEMA images
576 if ( strImPos == GDCM_UNFOUND )
578 gdcmWarningMacro( "Unfound Image Position (RET) (0020,0030)");
583 if( sscanf( strImPos.c_str(), "%f \\%f \\%f ", &xImPos, &yImPos, &zImPos) != 3 )
592 * \brief gets the info from 0020,0032 : Image Position Patient
593 * else from 0020,0030 : Image Position (RET)
594 * else from 0020,1041 : Slice Location
595 * else from 0020,0050 : Location
597 * @return up-left image corner Z position
599 float File::GetZOrigin()
601 float xImPos, yImPos, zImPos;
602 std::string strImPos = GetEntryValue(0x0020,0x0032);
604 if ( strImPos != GDCM_UNFOUND )
606 if( sscanf( strImPos.c_str(), "%f \\%f \\%f ", &xImPos, &yImPos, &zImPos) != 3)
608 gdcmWarningMacro( "Wrong Image Position Patient (0020,0032)");
609 return 0.; // bug in the element 0x0020,0x0032
617 strImPos = GetEntryValue(0x0020,0x0030); // For ACR-NEMA images
618 if ( strImPos != GDCM_UNFOUND )
620 if( sscanf( strImPos.c_str(),
621 "%f \\%f \\%f ", &xImPos, &yImPos, &zImPos ) != 3 )
623 gdcmWarningMacro( "Wrong Image Position (RET) (0020,0030)");
624 return 0.; // bug in the element 0x0020,0x0032
632 std::string strSliceLocation = GetEntryValue(0x0020,0x1041); // for *very* old ACR-NEMA images
633 if ( strSliceLocation != GDCM_UNFOUND )
635 if( sscanf( strSliceLocation.c_str(), "%f ", &zImPos) != 1)
637 gdcmWarningMacro( "Wrong Slice Location (0020,1041)");
638 return 0.; // bug in the element 0x0020,0x1041
645 gdcmWarningMacro( "Unfound Slice Location (0020,1041)");
647 std::string strLocation = GetEntryValue(0x0020,0x0050);
648 if ( strLocation != GDCM_UNFOUND )
650 if( sscanf( strLocation.c_str(), "%f ", &zImPos) != 1)
652 gdcmWarningMacro( "Wrong Location (0020,0050)");
653 return 0.; // bug in the element 0x0020,0x0050
660 gdcmWarningMacro( "Unfound Location (0020,0050)");
662 return 0.; // Hopeless
666 * \brief gets the info from 0020,0037 : Image Orientation Patient
667 * (needed to organize DICOM files based on their x,y,z position)
668 * @param iop adress of the (6)float aray to receive values
669 * @return cosines of image orientation patient
671 void File::GetImageOrientationPatient( float iop[6] )
673 std::string strImOriPat;
674 //iop is supposed to be float[6]
675 iop[0] = iop[1] = iop[2] = iop[3] = iop[4] = iop[5] = 0.;
677 // 0020 0037 DS REL Image Orientation (Patient)
678 if ( (strImOriPat = GetEntryValue(0x0020,0x0037)) != GDCM_UNFOUND )
680 if( sscanf( strImOriPat.c_str(), "%f \\ %f \\%f \\%f \\%f \\%f ",
681 &iop[0], &iop[1], &iop[2], &iop[3], &iop[4], &iop[5]) != 6 )
683 gdcmWarningMacro( "Wrong Image Orientation Patient (0020,0037). Less than 6 values were found." );
687 // 0020 0035 DS REL Image Orientation (RET)
688 else if ( (strImOriPat = GetEntryValue(0x0020,0x0035)) != GDCM_UNFOUND )
690 if( sscanf( strImOriPat.c_str(), "%f \\ %f \\%f \\%f \\%f \\%f ",
691 &iop[0], &iop[1], &iop[2], &iop[3], &iop[4], &iop[5]) != 6 )
693 gdcmWarningMacro( "wrong Image Orientation Patient (0020,0035). Less than 6 values were found." );
699 * \brief Retrieve the number of Bits Stored (actually used)
700 * (as opposed to number of Bits Allocated)
701 * @return The encountered number of Bits Stored, 0 by default.
702 * 0 means the file is NOT USABLE. The caller has to check it !
704 int File::GetBitsStored()
706 std::string strSize = GetEntryValue( 0x0028, 0x0101 );
707 if ( strSize == GDCM_UNFOUND )
709 gdcmWarningMacro("(0028,0101) is supposed to be mandatory");
710 return 0; // It's supposed to be mandatory
711 // the caller will have to check
713 return atoi( strSize.c_str() );
717 * \brief Retrieve the number of Bits Allocated
718 * (8, 12 -compacted ACR-NEMA files, 16, ...)
719 * @return The encountered number of Bits Allocated, 0 by default.
720 * 0 means the file is NOT USABLE. The caller has to check it !
722 int File::GetBitsAllocated()
724 std::string strSize = GetEntryValue(0x0028,0x0100);
725 if ( strSize == GDCM_UNFOUND )
727 gdcmWarningMacro( "(0028,0100) is supposed to be mandatory");
728 return 0; // It's supposed to be mandatory
729 // the caller will have to check
731 return atoi( strSize.c_str() );
735 * \brief Retrieve the high bit position.
736 * \warning The method defaults to 0 when information is Missing.
737 * The responsability of checking this value is left to the caller.
738 * @return The high bit positin when present. 0 when Missing.
740 int File::GetHighBitPosition()
742 std::string strSize = GetEntryValue( 0x0028, 0x0102 );
743 if ( strSize == GDCM_UNFOUND )
745 gdcmWarningMacro( "(0028,0102) is supposed to be mandatory");
748 return atoi( strSize.c_str() );
752 * \brief Retrieve the number of Samples Per Pixel
753 * (1 : gray level, 3 : RGB -1 or 3 Planes-)
754 * @return The encountered number of Samples Per Pixel, 1 by default.
755 * (Gray level Pixels)
757 int File::GetSamplesPerPixel()
759 const std::string &strSize = GetEntryValue(0x0028,0x0002);
760 if ( strSize == GDCM_UNFOUND )
762 gdcmWarningMacro( "(0028,0002) is supposed to be mandatory");
763 return 1; // Well, it's supposed to be mandatory ...
764 // but sometimes it's missing : *we* assume Gray pixels
766 return atoi( strSize.c_str() );
770 * \brief Retrieve the Planar Configuration for RGB images
771 * (0 : RGB Pixels , 1 : R Plane + G Plane + B Plane)
772 * @return The encountered Planar Configuration, 0 by default.
774 int File::GetPlanarConfiguration()
776 std::string strSize = GetEntryValue(0x0028,0x0006);
777 if ( strSize == GDCM_UNFOUND )
779 gdcmWarningMacro( "Not found : Planar Configuration (0028,0006)");
782 return atoi( strSize.c_str() );
786 * \brief Return the size (in bytes) of a single pixel of data.
787 * @return The size in bytes of a single pixel of data; 0 by default
788 * 0 means the file is NOT USABLE; the caller will have to check
790 int File::GetPixelSize()
792 // 0028 0100 US IMG Bits Allocated
793 // (in order no to be messed up by old RGB images)
794 // if (File::GetEntryValue(0x0028,0x0100) == "24")
797 std::string pixelType = GetPixelType();
798 if ( pixelType == "8U" || pixelType == "8S" )
802 if ( pixelType == "16U" || pixelType == "16S")
806 if ( pixelType == "32U" || pixelType == "32S")
810 if ( pixelType == "FD" )
814 gdcmWarningMacro( "Unknown pixel type");
819 * \brief Build the Pixel Type of the image.
820 * Possible values are:
821 * - 8U unsigned 8 bit,
823 * - 16U unsigned 16 bit,
824 * - 16S signed 16 bit,
825 * - 32U unsigned 32 bit,
826 * - 32S signed 32 bit,
827 * - FD floating double 64 bits (Not kosher DICOM, but so usefull!)
828 * \warning 12 bit images appear as 16 bit.
829 * 24 bit images appear as 8 bit + photochromatic interp ="RGB "
830 * @return 0S if nothing found. NOT USABLE file. The caller has to check
832 std::string File::GetPixelType()
834 std::string bitsAlloc = GetEntryValue(0x0028, 0x0100); // Bits Allocated
835 if ( bitsAlloc == GDCM_UNFOUND )
837 gdcmWarningMacro( "Missing Bits Allocated (0028,0100)");
838 bitsAlloc = "16"; // default and arbitrary value, not to polute the output
841 if ( bitsAlloc == "64" )
845 else if ( bitsAlloc == "12" )
847 // It will be unpacked
850 else if ( bitsAlloc == "24" )
852 // (in order no to be messed up
853 bitsAlloc = "8"; // by old RGB images)
856 std::string sign = GetEntryValue(0x0028, 0x0103);//"Pixel Representation"
858 if (sign == GDCM_UNFOUND )
860 gdcmWarningMacro( "Missing Pixel Representation (0028,0103)");
861 sign = "U"; // default and arbitrary value, not to polute the output
863 else if ( sign == "0" )
871 return bitsAlloc + sign;
875 * \brief Check whether the pixels are signed (1) or UNsigned (0) data.
876 * \warning The method defaults to false (UNsigned) when tag 0028|0103
878 * The responsability of checking this value is left to the caller.
879 * @return True when signed, false when UNsigned
881 bool File::IsSignedPixelData()
883 std::string strSign = GetEntryValue( 0x0028, 0x0103 );
884 if ( strSign == GDCM_UNFOUND )
886 gdcmWarningMacro( "(0028,0103) is supposed to be mandatory");
889 int sign = atoi( strSign.c_str() );
898 * \brief Check whether this a monochrome picture (gray levels) or not,
899 * using "Photometric Interpretation" tag (0x0028,0x0004).
900 * @return true when "MONOCHROME1" or "MONOCHROME2". False otherwise.
902 bool File::IsMonochrome()
904 const std::string &PhotometricInterp = GetEntryValue( 0x0028, 0x0004 );
905 if ( Util::DicomStringEqual(PhotometricInterp, "MONOCHROME1")
906 || Util::DicomStringEqual(PhotometricInterp, "MONOCHROME2") )
910 if ( PhotometricInterp == GDCM_UNFOUND )
912 gdcmWarningMacro( "Not found : Photometric Interpretation (0028,0004)");
918 * \brief Check whether this a MONOCHROME1 picture (high values = dark)
919 * or not using "Photometric Interpretation" tag (0x0028,0x0004).
920 * @return true when "MONOCHROME1" . False otherwise.
922 bool File::IsMonochrome1()
924 const std::string &PhotometricInterp = GetEntryValue( 0x0028, 0x0004 );
925 if ( Util::DicomStringEqual(PhotometricInterp, "MONOCHROME1") )
929 if ( PhotometricInterp == GDCM_UNFOUND )
931 gdcmWarningMacro( "Not found : Photometric Interpretation (0028,0004)");
937 * \brief Check whether this a "PALETTE COLOR" picture or not by accessing
938 * the "Photometric Interpretation" tag ( 0x0028, 0x0004 ).
939 * @return true when "PALETTE COLOR". False otherwise.
941 bool File::IsPaletteColor()
943 std::string PhotometricInterp = GetEntryValue( 0x0028, 0x0004 );
944 if ( PhotometricInterp == "PALETTE COLOR " )
948 if ( PhotometricInterp == GDCM_UNFOUND )
950 gdcmWarningMacro( "Not found : Palette color (0028,0004)");
956 * \brief Check whether this a "YBR_FULL" color picture or not by accessing
957 * the "Photometric Interpretation" tag ( 0x0028, 0x0004 ).
958 * @return true when "YBR_FULL". False otherwise.
960 bool File::IsYBRFull()
962 std::string PhotometricInterp = GetEntryValue( 0x0028, 0x0004 );
963 if ( PhotometricInterp == "YBR_FULL" )
967 if ( PhotometricInterp == GDCM_UNFOUND )
969 gdcmWarningMacro( "Not found : YBR Full (0028,0004)");
975 * \brief tells us if LUT are used
976 * \warning Right now, 'Segmented xxx Palette Color Lookup Table Data'
977 * are NOT considered as LUT, since nobody knows
978 * how to deal with them
979 * Please warn me if you know sbdy that *does* know ... jprx
980 * @return true if LUT Descriptors and LUT Tables were found
984 // Check the presence of the LUT Descriptors, and LUT Tables
986 if ( !GetDocEntry(0x0028,0x1101) )
990 // LutDescriptorGreen
991 if ( !GetDocEntry(0x0028,0x1102) )
996 if ( !GetDocEntry(0x0028,0x1103) )
1000 // Red Palette Color Lookup Table Data
1001 if ( !GetDocEntry(0x0028,0x1201) )
1005 // Green Palette Color Lookup Table Data
1006 if ( !GetDocEntry(0x0028,0x1202) )
1010 // Blue Palette Color Lookup Table Data
1011 if ( !GetDocEntry(0x0028,0x1203) )
1016 // FIXME : (0x0028,0x3006) : LUT Data (CTX dependent)
1017 // NOT taken into account, but we don't know how to use it ...
1022 * \brief gets the info from 0028,1101 : Lookup Table Desc-Red
1024 * @return Lookup Table number of Bits , 0 by default
1025 * when (0028,0004),Photometric Interpretation = [PALETTE COLOR ]
1026 * @ return bit number of each LUT item
1028 int File::GetLUTNbits()
1030 std::vector<std::string> tokens;
1033 //Just hope Lookup Table Desc-Red = Lookup Table Desc-Red
1034 // = Lookup Table Desc-Blue
1035 // Consistency already checked in GetLUTLength
1036 std::string lutDescription = GetEntryValue(0x0028,0x1101);
1037 if ( lutDescription == GDCM_UNFOUND )
1042 tokens.clear(); // clean any previous value
1043 Util::Tokenize ( lutDescription, tokens, "\\" );
1044 //LutLength=atoi(tokens[0].c_str());
1045 //LutDepth=atoi(tokens[1].c_str());
1047 lutNbits = atoi( tokens[2].c_str() );
1054 *\brief gets the info from 0028,1052 : Rescale Intercept
1055 * @return Rescale Intercept
1057 float File::GetRescaleIntercept()
1059 float resInter = 0.;
1060 /// 0028 1052 DS IMG Rescale Intercept
1061 const std::string &strRescInter = GetEntryValue(0x0028,0x1052);
1062 if ( strRescInter != GDCM_UNFOUND )
1064 if( sscanf( strRescInter.c_str(), "%f ", &resInter) != 1 )
1066 // bug in the element 0x0028,0x1052
1067 gdcmWarningMacro( "Rescale Intercept (0028,1052) is empty." );
1075 *\brief gets the info from 0028,1053 : Rescale Slope
1076 * @return Rescale Slope
1078 float File::GetRescaleSlope()
1080 float resSlope = 1.;
1081 //0028 1053 DS IMG Rescale Slope
1082 std::string strRescSlope = GetEntryValue(0x0028,0x1053);
1083 if ( strRescSlope != GDCM_UNFOUND )
1085 if( sscanf( strRescSlope.c_str(), "%f ", &resSlope) != 1)
1087 // bug in the element 0x0028,0x1053
1088 gdcmWarningMacro( "Rescale Slope (0028,1053) is empty.");
1096 * \brief This function is intended to user who doesn't want
1097 * to have to manage a LUT and expects to get an RBG Pixel image
1098 * (or a monochrome one ...)
1099 * \warning to be used with GetImagePixels()
1100 * @return 1 if Gray level, 3 if Color (RGB, YBR or PALETTE COLOR)
1102 int File::GetNumberOfScalarComponents()
1104 if ( GetSamplesPerPixel() == 3 )
1109 // 0028 0100 US IMG Bits Allocated
1110 // (in order no to be messed up by old RGB images)
1111 if ( GetEntryValue(0x0028,0x0100) == "24" )
1116 std::string strPhotometricInterpretation = GetEntryValue(0x0028,0x0004);
1118 if ( ( strPhotometricInterpretation == "PALETTE COLOR ") )
1120 if ( HasLUT() )// PALETTE COLOR is NOT enough
1130 // beware of trailing space at end of string
1131 // DICOM tags are never of odd length
1132 if ( strPhotometricInterpretation == GDCM_UNFOUND ||
1133 Util::DicomStringEqual(strPhotometricInterpretation, "MONOCHROME1") ||
1134 Util::DicomStringEqual(strPhotometricInterpretation, "MONOCHROME2") )
1140 // we assume that *all* kinds of YBR are dealt with
1146 * \brief This function is intended to user that DOESN'T want
1147 * to get RGB pixels image when it's stored as a PALETTE COLOR image
1148 * - the (vtk) user is supposed to know how deal with LUTs -
1149 * \warning to be used with GetImagePixelsRaw()
1150 * @return 1 if Gray level, 3 if Color (RGB or YBR - NOT 'PALETTE COLOR' -)
1152 int File::GetNumberOfScalarComponentsRaw()
1154 // 0028 0100 US IMG Bits Allocated
1155 // (in order no to be messed up by old RGB images)
1156 if ( File::GetEntryValue(0x0028,0x0100) == "24" )
1161 // we assume that *all* kinds of YBR are dealt with
1162 return GetSamplesPerPixel();
1166 * \brief Recover the offset (from the beginning of the file)
1167 * of *image* pixels (not *icone image* pixels, if any !)
1168 * @return Pixel Offset
1170 size_t File::GetPixelOffset()
1172 DocEntry *pxlElement = GetDocEntry(GrPixel, NumPixel);
1175 return pxlElement->GetOffset();
1179 gdcmDebugMacro( "Big trouble : Pixel Element ("
1180 << std::hex << GrPixel<<","<< NumPixel<< ") NOT found" );
1186 * \brief Recover the pixel area length (in Bytes)
1187 * @return Pixel Element Length, as stored in the header
1188 * (NOT the memory space necessary to hold the Pixels
1189 * -in case of embeded compressed image-)
1190 * 0 : NOT USABLE file. The caller has to check.
1192 size_t File::GetPixelAreaLength()
1194 DocEntry *pxlElement = GetDocEntry(GrPixel, NumPixel);
1197 return pxlElement->GetLength();
1201 gdcmDebugMacro( "Big trouble : Pixel Element ("
1202 << std::hex << GrPixel<<","<< NumPixel<< ") NOT found" );
1208 * \brief Adds the characteristics of a new element we want to anonymize
1211 void File::AddAnonymizeElement (uint16_t group, uint16_t elem,
1212 std::string const &value)
1219 AnonymizeList.push_back(el);
1223 * \brief Overwrites in the file the values of the DicomElements
1226 void File::AnonymizeNoLoad()
1228 std::fstream *fp = new std::fstream(Filename.c_str(),
1229 std::ios::in | std::ios::out | std::ios::binary);
1233 uint32_t valLgth = 0;
1234 std::string *spaces;
1235 for (ListElements::iterator it = AnonymizeList.begin();
1236 it != AnonymizeList.end();
1239 d = GetDocEntry( (*it).Group, (*it).Elem);
1244 if ( dynamic_cast<BinEntry *>(d)
1245 || dynamic_cast<SeqEntry *>(d) )
1248 offset = d->GetOffset();
1249 lgth = d->GetLength();
1252 spaces = new std::string( lgth-valLgth, ' ');
1253 (*it).Value = (*it).Value + *spaces;
1256 fp->seekp( offset, std::ios::beg );
1257 fp->write( (*it).Value.c_str(), lgth );
1265 * \brief anonymize a File (removes Patient's personal info passed with
1266 * AddAnonymizeElement()
1268 bool File::AnonymizeFile()
1270 // If Anonymisation list is empty, let's perform some basic anonymization
1271 if ( AnonymizeList.begin() == AnonymizeList.end() )
1273 // If exist, replace by spaces
1274 SetValEntry (" ",0x0010, 0x2154); // Telephone
1275 SetValEntry (" ",0x0010, 0x1040); // Adress
1276 SetValEntry (" ",0x0010, 0x0020); // Patient ID
1278 DocEntry* patientNameHE = GetDocEntry (0x0010, 0x0010);
1280 if ( patientNameHE ) // we replace it by Study Instance UID (why not ?)
1282 std::string studyInstanceUID = GetEntryValue (0x0020, 0x000d);
1283 if ( studyInstanceUID != GDCM_UNFOUND )
1285 SetValEntry(studyInstanceUID, 0x0010, 0x0010);
1289 SetValEntry("anonymised", 0x0010, 0x0010);
1296 for (ListElements::iterator it = AnonymizeList.begin();
1297 it != AnonymizeList.end();
1300 d = GetDocEntry( (*it).Group, (*it).Elem);
1305 if ( dynamic_cast<BinEntry *>(d)
1306 || dynamic_cast<SeqEntry *>(d) )
1309 SetValEntry ((*it).Value, (*it).Group, (*it).Elem);
1313 // In order to make definitively impossible any further identification
1314 // remove or replace all the stuff that contains a Date
1316 //0008 0012 DA ID Instance Creation Date
1317 //0008 0020 DA ID Study Date
1318 //0008 0021 DA ID Series Date
1319 //0008 0022 DA ID Acquisition Date
1320 //0008 0023 DA ID Content Date
1321 //0008 0024 DA ID Overlay Date
1322 //0008 0025 DA ID Curve Date
1323 //0008 002a DT ID Acquisition Datetime
1324 //0018 9074 DT ACQ Frame Acquisition Datetime
1325 //0018 9151 DT ACQ Frame Reference Datetime
1326 //0018 a002 DT ACQ Contribution Date Time
1327 //0020 3403 SH REL Modified Image Date (RET)
1328 //0032 0032 DA SDY Study Verified Date
1329 //0032 0034 DA SDY Study Read Date
1330 //0032 1000 DA SDY Scheduled Study Start Date
1331 //0032 1010 DA SDY Scheduled Study Stop Date
1332 //0032 1040 DA SDY Study Arrival Date
1333 //0032 1050 DA SDY Study Completion Date
1334 //0038 001a DA VIS Scheduled Admission Date
1335 //0038 001c DA VIS Scheduled Discharge Date
1336 //0038 0020 DA VIS Admitting Date
1337 //0038 0030 DA VIS Discharge Date
1338 //0040 0002 DA PRC Scheduled Procedure Step Start Date
1339 //0040 0004 DA PRC Scheduled Procedure Step End Date
1340 //0040 0244 DA PRC Performed Procedure Step Start Date
1341 //0040 0250 DA PRC Performed Procedure Step End Date
1342 //0040 2004 DA PRC Issue Date of Imaging Service Request
1343 //0040 4005 DT PRC Scheduled Procedure Step Start Date and Time
1344 //0040 4011 DT PRC Expected Completion Date and Time
1345 //0040 a030 DT PRC Verification Date Time
1346 //0040 a032 DT PRC Observation Date Time
1347 //0040 a120 DT PRC DateTime
1348 //0040 a121 DA PRC Date
1349 //0040 a13a DT PRC Referenced Datetime
1350 //0070 0082 DA ??? Presentation Creation Date
1351 //0100 0420 DT ??? SOP Autorization Date and Time
1352 //0400 0105 DT ??? Digital Signature DateTime
1353 //2100 0040 DA PJ Creation Date
1354 //3006 0008 DA SSET Structure Set Date
1355 //3008 0024 DA ??? Treatment Control Point Date
1356 //3008 0054 DA ??? First Treatment Date
1357 //3008 0056 DA ??? Most Recent Treatment Date
1358 //3008 0162 DA ??? Safe Position Exit Date
1359 //3008 0166 DA ??? Safe Position Return Date
1360 //3008 0250 DA ??? Treatment Date
1361 //300a 0006 DA RT RT Plan Date
1362 //300a 022c DA RT Air Kerma Rate Reference Date
1363 //300e 0004 DA RT Review Date
1369 * \brief Performs some consistency checking on various 'File related'
1370 * (as opposed to 'DicomDir related') entries
1371 * then writes in a file all the (Dicom Elements) included the Pixels
1372 * @param fileName file name to write to
1373 * @param writetype Type of the File to be written
1374 * (ACR, ExplicitVR, ImplicitVR)
1376 bool File::Write(std::string fileName, FileType writetype)
1378 std::ofstream *fp = new std::ofstream(fileName.c_str(),
1379 std::ios::out | std::ios::binary);
1382 gdcmWarningMacro("Failed to open (write) File: " << fileName.c_str());
1386 // Entry : 0002|0000 = group length -> recalculated
1387 ValEntry*e0000 = GetValEntry(0x0002,0x0000);
1390 std::ostringstream sLen;
1391 sLen << ComputeGroup0002Length(writetype);
1392 e0000->SetValue(sLen.str());
1395 int i_lgPix = GetEntryLength(GrPixel, NumPixel);
1398 // no (GrPixel, NumPixel) element
1399 std::string s_lgPix = Util::Format("%d", i_lgPix+12);
1400 s_lgPix = Util::DicomString( s_lgPix.c_str() );
1401 InsertValEntry(s_lgPix,GrPixel, 0x0000);
1404 Document::WriteContent(fp, writetype);
1412 //-----------------------------------------------------------------------------
1416 //-----------------------------------------------------------------------------
1419 * \brief Parse pixel data from disk of [multi-]fragment RLE encoding.
1420 * Compute the RLE extra information and store it in \ref RLEInfo
1421 * for later pixel retrieval usage.
1423 void File::ComputeRLEInfo()
1425 std::string ts = GetTransferSyntax();
1426 if ( !Global::GetTS()->IsRLELossless(ts) )
1431 // Encoded pixel data: for the time being we are only concerned with
1432 // Jpeg or RLE Pixel data encodings.
1433 // As stated in PS 3.5-2003, section 8.2 p44:
1434 // "If sent in Encapsulated Format (i.e. other than the Native Format) the
1435 // value representation OB is used".
1436 // Hence we expect an OB value representation. Concerning OB VR,
1437 // the section PS 3.5-2003, section A.4.c p 58-59, states:
1438 // "For the Value Representations OB and OW, the encoding shall meet the
1439 // following specifications depending on the Data element tag:"
1441 // - the first item in the sequence of items before the encoded pixel
1442 // data stream shall be basic offset table item. The basic offset table
1443 // item value, however, is not required to be present"
1444 ReadAndSkipEncapsulatedBasicOffsetTable();
1446 // Encapsulated RLE Compressed Images (see PS 3.5-2003, Annex G)
1447 // Loop on the individual frame[s] and store the information
1448 // on the RLE fragments in a RLEFramesInfo.
1449 // Note: - when only a single frame is present, this is a
1451 // - when more than one frame are present, then we are in
1452 // the case of a multi-frame image.
1454 while ( (frameLength = ReadTagLength(0xfffe, 0xe000)) != 0 )
1456 // Parse the RLE Header and store the corresponding RLE Segment
1457 // Offset Table information on fragments of this current Frame.
1458 // Note that the fragment pixels themselves are not loaded
1459 // (but just skipped).
1460 long frameOffset = Fp->tellg();
1462 uint32_t nbRleSegments = ReadInt32();
1463 if ( nbRleSegments > 16 )
1465 // There should be at most 15 segments (refer to RLEFrame class)
1466 gdcmWarningMacro( "Too many segments.");
1469 uint32_t rleSegmentOffsetTable[16];
1470 for( int k = 1; k <= 15; k++ )
1472 rleSegmentOffsetTable[k] = ReadInt32();
1475 // Deduce from both the RLE Header and the frameLength the
1476 // fragment length, and again store this info in a
1478 long rleSegmentLength[15];
1479 // skipping (not reading) RLE Segments
1480 if ( nbRleSegments > 1)
1482 for(unsigned int k = 1; k <= nbRleSegments-1; k++)
1484 rleSegmentLength[k] = rleSegmentOffsetTable[k+1]
1485 - rleSegmentOffsetTable[k];
1486 SkipBytes(rleSegmentLength[k]);
1490 rleSegmentLength[nbRleSegments] = frameLength
1491 - rleSegmentOffsetTable[nbRleSegments];
1492 SkipBytes(rleSegmentLength[nbRleSegments]);
1494 // Store the collected info
1495 RLEFrame *newFrame = new RLEFrame;
1496 newFrame->SetNumberOfFragments(nbRleSegments);
1497 for( unsigned int uk = 1; uk <= nbRleSegments; uk++ )
1499 newFrame->SetOffset(uk,frameOffset + rleSegmentOffsetTable[uk]);
1500 newFrame->SetLength(uk,rleSegmentLength[uk]);
1502 RLEInfo->AddFrame(newFrame);
1505 // Make sure that at the end of the item we encounter a 'Sequence
1507 if ( !ReadTag(0xfffe, 0xe0dd) )
1509 gdcmWarningMacro( "No sequence delimiter item at end of RLE item sequence");
1514 * \brief Parse pixel data from disk of [multi-]fragment Jpeg encoding.
1515 * Compute the jpeg extra information (fragment[s] offset[s] and
1516 * length) and store it[them] in \ref JPEGInfo for later pixel
1519 void File::ComputeJPEGFragmentInfo()
1521 // If you need to, look for comments of ComputeRLEInfo().
1522 std::string ts = GetTransferSyntax();
1523 if ( ! Global::GetTS()->IsJPEG(ts) )
1528 ReadAndSkipEncapsulatedBasicOffsetTable();
1530 // Loop on the fragments[s] and store the parsed information in a
1532 long fragmentLength;
1533 while ( (fragmentLength = ReadTagLength(0xfffe, 0xe000)) != 0 )
1535 long fragmentOffset = Fp->tellg();
1537 // Store the collected info
1538 JPEGFragment *newFragment = new JPEGFragment;
1539 newFragment->SetOffset(fragmentOffset);
1540 newFragment->SetLength(fragmentLength);
1541 JPEGInfo->AddFragment(newFragment);
1543 SkipBytes(fragmentLength);
1546 // Make sure that at the end of the item we encounter a 'Sequence
1548 if ( !ReadTag(0xfffe, 0xe0dd) )
1550 gdcmWarningMacro( "No sequence delimiter item at end of JPEG item sequence");
1555 * \brief Assuming the internal file pointer \ref Document::Fp
1556 * is placed at the beginning of a tag check whether this
1557 * tag is (TestGroup, TestElement).
1558 * \warning On success the internal file pointer \ref Document::Fp
1559 * is modified to point after the tag.
1560 * On failure (i.e. when the tag wasn't the expected tag
1561 * (TestGroup, TestElement) the internal file pointer
1562 * \ref Document::Fp is restored to it's original position.
1563 * @param testGroup The expected group of the tag.
1564 * @param testElement The expected Element of the tag.
1565 * @return True on success, false otherwise.
1567 bool File::ReadTag(uint16_t testGroup, uint16_t testElement)
1569 long positionOnEntry = Fp->tellg();
1570 long currentPosition = Fp->tellg(); // On debugging purposes
1572 // Read the Item Tag group and element, and make
1573 // sure they are what we expected:
1574 uint16_t itemTagGroup;
1575 uint16_t itemTagElement;
1578 itemTagGroup = ReadInt16();
1579 itemTagElement = ReadInt16();
1581 catch ( FormatError e )
1583 //std::cerr << e << std::endl;
1586 if ( itemTagGroup != testGroup || itemTagElement != testElement )
1588 gdcmWarningMacro( "Wrong Item Tag found:"
1589 << " We should have found tag ("
1590 << std::hex << testGroup << "," << testElement << ")" << std::endl
1591 << " but instead we encountered tag ("
1592 << std::hex << itemTagGroup << "," << itemTagElement << ")"
1593 << " at address: " << " 0x(" << (unsigned int)currentPosition << ")"
1595 Fp->seekg(positionOnEntry, std::ios::beg);
1603 * \brief Assuming the internal file pointer \ref Document::Fp
1604 * is placed at the beginning of a tag (TestGroup, TestElement),
1605 * read the length associated to the Tag.
1606 * \warning On success the internal file pointer \ref Document::Fp
1607 * is modified to point after the tag and it's length.
1608 * On failure (i.e. when the tag wasn't the expected tag
1609 * (TestGroup, TestElement) the internal file pointer
1610 * \ref Document::Fp is restored to it's original position.
1611 * @param testGroup The expected group of the tag.
1612 * @param testElement The expected Element of the tag.
1613 * @return On success returns the length associated to the tag. On failure
1616 uint32_t File::ReadTagLength(uint16_t testGroup, uint16_t testElement)
1619 if ( !ReadTag(testGroup, testElement) )
1624 //// Then read the associated Item Length
1625 long currentPosition = Fp->tellg();
1626 uint32_t itemLength = ReadInt32();
1628 gdcmWarningMacro( "Basic Item Length is: "
1629 << itemLength << std::endl
1630 << " at address: " << std::hex << (unsigned int)currentPosition);
1636 * \brief When parsing the Pixel Data of an encapsulated file, read
1637 * the basic offset table (when present, and BTW dump it).
1639 void File::ReadAndSkipEncapsulatedBasicOffsetTable()
1641 //// Read the Basic Offset Table Item Tag length...
1642 uint32_t itemLength = ReadTagLength(0xfffe, 0xe000);
1644 // When present, read the basic offset table itself.
1645 // Notes: - since the presence of this basic offset table is optional
1646 // we can't rely on it for the implementation, and we will simply
1647 // trash it's content (when present).
1648 // - still, when present, we could add some further checks on the
1649 // lengths, but we won't bother with such fuses for the time being.
1650 if ( itemLength != 0 )
1652 char *basicOffsetTableItemValue = new char[itemLength + 1];
1653 Fp->read(basicOffsetTableItemValue, itemLength);
1656 for (unsigned int i=0; i < itemLength; i += 4 )
1658 uint32_t individualLength = str2num( &basicOffsetTableItemValue[i],
1660 gdcmWarningMacro( "Read one length: " <<
1661 std::hex << individualLength );
1665 delete[] basicOffsetTableItemValue;
1669 //-----------------------------------------------------------------------------
1672 //-----------------------------------------------------------------------------
1673 } // end namespace gdcm