-// gdcmHeader.cxx
+// $Header: /cvs/public/gdcm/src/Attic/gdcmHeader.cxx,v 1.69 2003/06/17 17:44:48 jpr Exp $
#include <stdio.h>
#include <cerrno>
#include <sstream>
#include "gdcmUtil.h"
#include "gdcmHeader.h"
+using namespace std;
+
+
+// TODO : remove DEBUG
+#define DEBUG 0
// Refer to gdcmHeader::CheckSwap()
#define HEADER_LENGTH_TO_READ 256
void gdcmHeader::Initialise(void) {
dicom_vr = gdcmGlobal::GetVR();
- Dicts = gdcmGlobal::GetDicts();
+ dicom_ts = gdcmGlobal::GetTS();
+ Dicts = gdcmGlobal::GetDicts();
RefPubDict = Dicts->GetDefaultPubDict();
RefShaDict = (gdcmDict*)0;
}
SetMaxSizeLoadElementValue(_MaxSizeLoadElementValue_);
filename = InFilename;
Initialise();
- OpenFile(exception_on_error);
+ if ( !OpenFile(exception_on_error))
+ return;
ParseHeader();
LoadElements();
CloseFile();
}
+gdcmHeader::gdcmHeader(bool exception_on_error) {
+ SetMaxSizeLoadElementValue(_MaxSizeLoadElementValue_);
+ Initialise();
+}
+
bool gdcmHeader::OpenFile(bool exception_on_error)
throw(gdcmFileError) {
fp=fopen(filename.c_str(),"rb");
if(!fp)
throw gdcmFileError("gdcmHeader::gdcmHeader(const char *, bool)");
}
- else
- dbg.Error(!fp, "gdcmHeader::gdcmHeader cannot open file", filename.c_str());
if ( fp )
return true;
+ dbg.Verbose(0, "gdcmHeader::gdcmHeader cannot open file", filename.c_str());
return false;
}
}
gdcmHeader::~gdcmHeader (void) {
- dicom_vr = (gdcmVR*)0;
- Dicts = (gdcmDictSet*)0;
+ dicom_vr = (gdcmVR*)0;
+ Dicts = (gdcmDictSet*)0;
RefPubDict = (gdcmDict*)0;
RefShaDict = (gdcmDict*)0;
return;
char VR[3];
string vr;
int lgrLue;
+ char msg[100]; // for sprintf. Sorry
+
long PositionOnEntry = ftell(fp);
// Warning: we believe this is explicit VR (Value Representation) because
// we used a heuristic that found "UL" in the first tag. Alas this
}
// We thought this was explicit VR, but we end up with an
- // implicit VR tag. Let's backtrack.
- dbg.Verbose(1, "gdcmHeader::FindVR:", "Falsely explicit vr file");
+ // implicit VR tag. Let's backtrack.
+
+ sprintf(msg,"Falsely explicit vr file (%04x,%04x)\n", ElVal->GetGroup(),ElVal->GetElement());
+ dbg.Verbose(1, "gdcmHeader::FindVR: ",msg);
+
fseek(fp, PositionOnEntry, SEEK_SET);
// When this element is known in the dictionary we shall use, e.g. for
// the semantics (see the usage of IsAnInteger), the vr proposed by the
return false;
}
-// faire qq chose d'intelligent a la place de ça
-
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ *
+ * @return
+ */
bool gdcmHeader::IsJPEGLossless(void) {
gdcmElValue* Element = PubElValSet.GetElementByNumber(0x0002, 0x0010);
+ // faire qq chose d'intelligent a la place de ça
if ( !Element )
return false;
LoadElementValueSafe(Element);
const char * Transfert = Element->GetValue().c_str();
- printf("TransfertSyntx %s\n",Transfert);
if ( memcmp(Transfert+strlen(Transfert)-2 ,"70",2)==0) return true;
if ( memcmp(Transfert+strlen(Transfert)-2 ,"55",2)==0) return true;
return false;
return true;
return false;
}
+
/**
* \ingroup gdcmHeader
* \brief Predicate for dicom version 3 file.
ElVal->SetLength(FoundLength);
}
-guint32 gdcmHeader::FindLengthOB(void) {
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ *
+ * @return
+ */
+ guint32 gdcmHeader::FindLengthOB(void) {
// See PS 3.5-2001, section A.4 p. 49 on encapsulation of encoded pixel data.
guint16 g;
guint16 n;
while ( ! FoundSequenceDelimiter) {
g = ReadInt16();
n = ReadInt16();
+
+ if (DEBUG) printf ("dans FindLengthOB (%04x,%04x)\n",g,n);
+ long l = ftell(fp);
+ if (DEBUG) printf("en %d o(%o) x(%x)\n",l,l,l);
+
if (errno == 1)
return 0;
TotalLength += 4; // We even have to decount the group and element
- if ( g != 0xfffe ) {
- dbg.Verbose(1, "gdcmHeader::FindLengthOB: ",
- "wrong group for an item sequence.");
+
+ if ( g != 0xfffe && g!=0xb00c ) /*for bogus headerJPR */ {
+ char msg[100]; // for sprintf. Sorry
+ sprintf(msg,"wrong group (%04x) for an item sequence (%04x,%04x)\n",g, g,n);
+ dbg.Verbose(1, "gdcmHeader::FindLengthOB: ",msg);
+ long l = ftell(fp);
+ if (DEBUG) printf("en %d o(%o) x(%x)\n",l,l,l);
errno = 1;
return 0;
}
- if ( n == 0xe0dd )
+
+ if ( n == 0xe0dd || ( g==0xb00c && n==0x0eb6 ) ) /* for bogus header JPR */
FoundSequenceDelimiter = true;
- else if ( n != 0xe000) {
- dbg.Verbose(1, "gdcmHeader::FindLengthOB: ",
- "wrong element for an item sequence.");
+ else if ( n != 0xe000 ){
+ char msg[100]; // for sprintf. Sorry
+ sprintf(msg,"wrong element (%04x) for an item sequence (%04x,%04x)\n",n, g,n);
+ dbg.Verbose(1, "gdcmHeader::FindLengthOB: ",msg);
+ if (DEBUG) printf("wrong element (%04x) for an item sequence (%04x,%04x)\n",n, g,n);
errno = 1;
return 0;
}
ItemLength = ReadInt32();
TotalLength += ItemLength + 4; // We add 4 bytes since we just read
// the ItemLength with ReadInt32
+
+ if (DEBUG) printf("TotalLength %d\n",TotalLength);
SkipBytes(ItemLength);
}
fseek(fp, PositionOnEntry, SEEK_SET);
return TotalLength;
}
-void gdcmHeader::FindLength(gdcmElValue * ElVal) {
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ *
+ * @return
+ */
+ void gdcmHeader::FindLength (gdcmElValue * ElVal) {
guint16 element = ElVal->GetElement();
+ guint16 group = ElVal->GetGroup(); // JPR a virer
string vr = ElVal->GetVR();
guint16 length16;
+ if( (element == 0x0010) && (group == 0x7fe0) ) {// JPR
+
+ dbg.SetDebug(1);
+ dbg.Verbose(2, "gdcmHeader::FindLength: ", // JPR
+ "on est sur 7fe0 0010");
+ }
if ( (filetype == ExplicitVR) && ! ElVal->IsImplicitVr() ) {
-
if ( (vr=="OB") || (vr=="OW") || (vr=="SQ") || (vr=="UN") ) {
+
// The following reserved two bytes (see PS 3.5-2001, section
// 7.1.2 Data element structure with explicit vr p27) must be
// skipped before proceeding on reading the length on 4 bytes.
fseek(fp, 2L, SEEK_CUR);
+
guint32 length32 = ReadInt32();
if ( (vr == "OB") && (length32 == 0xffffffff) ) {
ElVal->SetLength(FindLengthOB());
return;
}
- FixFoundLength(ElVal, length32);
+ FixFoundLength(ElVal, length32);
return;
}
// endian encoding". When this is the case, chances are we have got our
// hands on a big endian encoded file: we switch the swap code to
// big endian and proceed...
- if ( (element == 0x000) && (length16 == 0x0400) ) {
+ if ( (element == 0x0000) && (length16 == 0x0400) ) {
if ( ! IsExplicitVRBigEndianTransferSyntax() ) {
dbg.Verbose(0, "gdcmHeader::FindLength", "not explicit VR");
errno = 1;
return (a);
}
-void gdcmHeader::SkipBytes(guint32 NBytes) {
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ *
+ * @return
+ */
+ void gdcmHeader::SkipBytes(guint32 NBytes) {
//FIXME don't dump the returned value
(void)fseek(fp, (long)NBytes, SEEK_CUR);
}
-void gdcmHeader::SkipElementValue(gdcmElValue * ElVal) {
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ *
+ * @return
+ */
+ void gdcmHeader::SkipElementValue(gdcmElValue * ElVal) {
SkipBytes(ElVal->GetLength());
}
-void gdcmHeader::SetMaxSizeLoadElementValue(long NewSize) {
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ *
+ * @return
+ */
+ void gdcmHeader::SetMaxSizeLoadElementValue(long NewSize) {
if (NewSize < 0)
return;
if ((guint32)NewSize >= (guint32)0xffffffff) {
void gdcmHeader::LoadElementValue(gdcmElValue * ElVal) {
size_t item_read;
guint16 group = ElVal->GetGroup();
- guint16 elem = ElVal->GetElement();
string vr = ElVal->GetVR();
guint32 length = ElVal->GetLength();
bool SkipLoad = false;
// on devrait pouvoir faire + compact (?)
- if ( IsAnInteger(ElVal) ) {
- guint32 NewInt;
- ostringstream s;
- int nbInt;
- if (vr == "US" || vr == "SS") {
- nbInt = length / 2;
- NewInt = ReadInt16();
- s << NewInt;
- if (nbInt > 1) {
- for (int i=1; i < nbInt; i++) {
- s << '\\';
- NewInt = ReadInt16();
- s << NewInt;
- }
- }
+ if ( IsAnInteger(ElVal) ) {
+ guint32 NewInt;
+ ostringstream s;
+ int nbInt;
+ if (vr == "US" || vr == "SS") {
+ nbInt = length / 2;
+ NewInt = ReadInt16();
+ s << NewInt;
+ if (nbInt > 1) {
+ for (int i=1; i < nbInt; i++) {
+ s << '\\';
+ NewInt = ReadInt16();
+ s << NewInt;
+ }
+ }
- } else if (vr == "UL" || vr == "SL") {
- nbInt = length / 4;
- NewInt = ReadInt32();
- s << NewInt;
- if (nbInt > 1) {
- for (int i=1; i < nbInt; i++) {
- s << '\\';
- NewInt = ReadInt32();
- s << NewInt;
- }
- }
- }
- ElVal->SetValue(s.str());
- return;
- }
+ } else if (vr == "UL" || vr == "SL") {
+ nbInt = length / 4;
+ NewInt = ReadInt32();
+ s << NewInt;
+ if (nbInt > 1) {
+ for (int i=1; i < nbInt; i++) {
+ s << '\\';
+ NewInt = ReadInt32();
+ s << NewInt;
+ }
+ }
+ }
+ ElVal->SetValue(s.str());
+ return;
+ }
// We need an additional byte for storing \0 that is not on disk
char* NewValue = (char*)malloc(length+1);
fseek(fp, PositionOnEntry, SEEK_SET);
}
-
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ *
+ * @return
+ */
guint16 gdcmHeader::ReadInt16(void) {
guint16 g;
size_t item_read;
item_read = fread (&g, (size_t)2,(size_t)1, fp);
- errno = 0;
if ( item_read != 1 ) {
- dbg.Verbose(1, "gdcmHeader::ReadInt16", " File read error");
+ dbg.Verbose(1, "gdcmHeader::ReadInt16", " Failed to read :");
+ if(feof(fp))
+ dbg.Verbose(1, "gdcmHeader::ReadInt16", " End of File encountered");
+ if(ferror(fp))
+ dbg.Verbose(1, "gdcmHeader::ReadInt16", " File Error");
errno = 1;
return 0;
}
+ errno = 0;
g = SwapShort(g);
return g;
}
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ *
+ * @return
+ */
guint32 gdcmHeader::ReadInt32(void) {
guint32 g;
size_t item_read;
item_read = fread (&g, (size_t)4,(size_t)1, fp);
- errno = 0;
if ( item_read != 1 ) {
- dbg.Verbose(1, "gdcmHeader::ReadInt32", " File read error");
+
+ dbg.Verbose(1, "gdcmHeader::ReadInt32", " Failed to read :");
+ if(feof(fp))
+ dbg.Verbose(1, "gdcmHeader::ReadInt32", " End of File encountered");
+ if(ferror(fp))
+ dbg.Verbose(1, "gdcmHeader::ReadInt32", " File Error");
errno = 1;
return 0;
}
+ errno = 0;
g = SwapLong(g);
return g;
}
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ *
+ * @return
+ */
+ gdcmElValue* gdcmHeader::GetElValueByNumber(guint16 Group, guint16 Elem) {
+
+ gdcmElValue* elValue = PubElValSet.GetElementByNumber(Group, Elem);
+ if (!elValue) {
+ dbg.Verbose(1, "gdcmHeader::GetElValueByNumber",
+ "failed to Locate gdcmElValue");
+ return (gdcmElValue*)0;
+ }
+ return elValue;
+}
+
/**
* \ingroup gdcmHeader
* \brief Build a new Element Value from all the low level arguments.
return(1);
}
-
/**
* \ingroup gdcmHeader
* \brief Build a new Element Value from all the low level arguments.
g = ReadInt16();
n = ReadInt16();
+
+ if ( (g==0x7fe0) && (n==0x0010) )
+ if (DEBUG)
+ printf("in gdcmHeader::ReadNextElement try to read 7fe0 0010 \n");
+
if (errno == 1)
// We reached the EOF (or an error occured) and header parsing
// has to be considered as finished.
NewElVal = NewElValueByNumber(g, n);
FindVR(NewElVal);
FindLength(NewElVal);
- if (errno == 1)
+ if (errno == 1) {
// Call it quits
+ if (DEBUG) printf("in gdcmHeader::ReadNextElement : g %04x n %04x errno %d\n",g, n, errno);
return (gdcmElValue *)0;
- NewElVal->SetOffset(ftell(fp));
+ }
+ NewElVal->SetOffset(ftell(fp));
+ if ( (g==0x7fe0) && (n==0x0010) )
+ if (DEBUG)
+ printf("sortie de gdcmHeader::ReadNextElement 7fe0 0010 \n");
return NewElVal;
}
if (length == 4)
return true;
else {
- printf("Erroneous Group Length element length (%04x , %04x) : %d\n",
+ if (DEBUG) printf("Erroneous Group Length element length (%04x , %04x) : %d\n",
group, element,length);
dbg.Error("gdcmHeader::IsAnInteger",
"Erroneous Group Length element length.");
}
}
-
if ( (vr == "UL") || (vr == "US") || (vr == "SL") || (vr == "SS") )
return true;
numPixel = 0x1010;
else
numPixel = 0x0010;
+
gdcmElValue* PixelElement = PubElValSet.GetElementByNumber(grPixel,
numPixel);
if (PixelElement)
*/
int gdcmHeader::SetPubElValByNumber(string content, guint16 group,
guint16 element)
+
+//TODO : homogeneiser les noms : SetPubElValByNumber qui appelle PubElValSet.SetElValueByNumber
+// pourquoi pas SetPubElValueByNumber ??
{
+
return ( PubElValSet.SetElValueByNumber (content, group, element) );
}
}
}
+
+//
+// TODO : JPR
+// des que les element values sont chargees, stocker,
+// en une seule fois, dans des entiers
+// NX, NY, NZ, Bits allocated, Bits Stored, High Bit, Samples Per Pixel
+// (TODO : preciser les autres)
+// et refaire ceux des accesseurs qui renvoient les entiers correspondants
+//
+// --> peut etre dangereux ?
+// si l'utilisateur modifie 'manuellement' l'un des paramètres
+// l'entier de sera pas modifié ...
+// (pb de la mise à jour en cas de redondance :-(
+
/**
* \ingroup gdcmHeader
* \brief Retrieve the number of columns of image.
return 1;
}
+
+/**
+ * \ingroup gdcmHeader
+ * \brief Retrieve the number of Bits Stored
+ * (as opposite to number of Bits Allocated)
+ *
+ * @return The encountered number of Bits Stored, 0 by default.
+ */
+int gdcmHeader::GetBitsStored(void) {
+ string StrSize = GetPubElValByNumber(0x0028,0x0101);
+ if (StrSize == "gdcm::Unfound")
+ return 1;
+ return atoi(StrSize.c_str());
+}
+
+
+/**
+ * \ingroup gdcmHeader
+ * \brief Retrieve the number of Samples Per Pixel
+ * (1 : gray level, 3 : RGB)
+ *
+ * @return The encountered number of Samples Per Pixel, 1 by default.
+ */
+int gdcmHeader::GetSamplesPerPixel(void) {
+ string StrSize = GetPubElValByNumber(0x0028,0x0002);
+ if (StrSize == "gdcm::Unfound")
+ return 1; // Well, it's supposed to be mandatory ...
+ return atoi(StrSize.c_str());
+}
+/**
+ * \ingroup gdcmHeader
+ * \brief Return the size (in bytes) of a single pixel of data.
+ * @return The size in bytes of a single pixel of data.
+ *
+ */
+int gdcmHeader::GetPixelSize(void) {
+ string PixelType = GetPixelType();
+ if (PixelType == "8U" || PixelType == "8S")
+ return 1;
+ if (PixelType == "16U" || PixelType == "16S")
+ return 2;
+ if (PixelType == "32U" || PixelType == "32S")
+ return 4;
+ dbg.Verbose(0, "gdcmHeader::GetPixelSize: Unknown pixel type");
+ return 0;
+}
+
/**
* \ingroup gdcmHeader
* \brief Build the Pixel Type of the image.
* Possible values are:
- * - U8 unsigned 8 bit,
- * - S8 signed 8 bit,
- * - U16 unsigned 16 bit,
- * - S16 signed 16 bit,
- * - U32 unsigned 32 bit,
- * - S32 signed 32 bit,
+ * - 8U unsigned 8 bit,
+ * - 8S signed 8 bit,
+ * - 16U unsigned 16 bit,
+ * - 16S signed 16 bit,
+ * - 32U unsigned 32 bit,
+ * - 32S signed 32 bit,
* \warning 12 bit images appear as 16 bit.
- * @return
+ * @return
*/
string gdcmHeader::GetPixelType(void) {
string BitsAlloc;
return( BitsAlloc + Signed);
}
+
/**
* \ingroup gdcmHeader
* \brief This predicate, based on hopefully reasonnable heuristics,
&& atoi(GetElValByName("Image Dimensions").c_str()) > 4 ) {
return false;
}
- if ( GetElValByName("Bits Allocated") == "gdcm::Unfound" )
+ if ( GetElValByName("Bits Allocated") == "gdcm::Unfound" )
return false;
- if ( GetElValByName("Bits Stored") == "gdcm::Unfound" )
+ if ( GetElValByName("Bits Stored") == "gdcm::Unfound" )
return false;
- if ( GetElValByName("High Bit") == "gdcm::Unfound" )
+ if ( GetElValByName("High Bit") == "gdcm::Unfound" )
return false;
- if ( GetElValByName("Pixel Representation") == "gdcm::Unfound" )
+ if ( GetElValByName("Pixel Representation") == "gdcm::Unfound" )
return false;
return true;
}
NewElVal = new gdcmElValue(NewEntry);
PubElValSet.Add(NewElVal);
return NewElVal;
-
}
/**
TagElValueHT ht = PubElValSet.GetTagHt();
for (TagElValueHT::iterator tag = ht.begin(); tag != ht.end(); ++tag) {
LoadElementValue(tag->second);
- }
+ }
}
-void gdcmHeader::PrintPubElVal(ostream & os) {
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ * @return
+ */
+void gdcmHeader::PrintPubElVal(std::ostream & os) {
PubElValSet.Print(os);
}
-void gdcmHeader::PrintPubDict(ostream & os) {
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ * @return
+ */
+void gdcmHeader::PrintPubDict(std::ostream & os) {
RefPubDict->Print(os);
}
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ * @return
+ */
+
int gdcmHeader::Write(FILE * fp, FileType type) {
return PubElValSet.Write(fp, type);
}
+
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ * @return
+ */
+float gdcmHeader::GetXSpacing(void) {
+ float xspacing, yspacing;
+ string StrSpacing = GetPubElValByNumber(0x0028,0x0030);
+
+ if (StrSpacing == "gdcm::Unfound") {
+ dbg.Verbose(0, "gdcmHeader::GetXSpacing: unfound Pixel Spacing");
+ return 1.;
+ }
+ if( sscanf( StrSpacing.c_str(), "%f\\%f", &xspacing, &yspacing) != 2)
+ return 0.;
+ //else
+ return xspacing;
+}
+
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ * @return
+ */
+float gdcmHeader::GetYSpacing(void) {
+ float xspacing, yspacing;
+ string StrSpacing = GetPubElValByNumber(0x0028,0x0030);
+
+ if (StrSpacing == "gdcm::Unfound") {
+ dbg.Verbose(0, "gdcmHeader::GetYSpacing: unfound Pixel Spacing");
+ return 1.;
+ }
+
+ if( sscanf( StrSpacing.c_str(), "%f\\%f", &xspacing, &yspacing) != 2)
+ return 0.;
+
+ if (yspacing == 0.)
+ {
+ dbg.Verbose(0, "gdcmHeader::GetYSpacing: gdcmData/CT-MONO2-8-abdo.dcm problem");
+ // seems to be a bug in the header ...
+ sscanf( StrSpacing.c_str(), "%f\\0\\%f", &xspacing, &yspacing);
+ }
+ return yspacing;
+}
+
+
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ * @return
+ */
+float gdcmHeader::GetZSpacing(void) {
+ // TODO : translate into English
+ // Spacing Between Slices : distance entre le milieu de chaque coupe
+ // Les coupes peuvent etre :
+ // jointives (Spacing between Slices = Slice Thickness)
+ // chevauchantes (Spacing between Slices < Slice Thickness)
+ // disjointes (Spacing between Slices > Slice Thickness)
+ // Slice Thickness : epaisseur de tissus sur laquelle est acquis le signal
+ // ca interesse le physicien de l'IRM, pas le visualisateur de volumes ...
+ // Si le Spacing Between Slices est absent,
+ // on suppose que les coupes sont jointives
+
+ string StrSpacingBSlices = GetPubElValByNumber(0x0018,0x0088);
+
+ if (StrSpacingBSlices == "gdcm::Unfound") {
+ dbg.Verbose(0, "gdcmHeader::GetZSpacing: unfound StrSpacingBSlices");
+ string StrSliceThickness = GetPubElValByNumber(0x0018,0x0050);
+ if (StrSliceThickness == "gdcm::Unfound")
+ return 1.;
+ else
+ return atof(StrSliceThickness.c_str());
+ } else {
+ return atof(StrSpacingBSlices.c_str());
+ }
+}
+
+//
+// Image Position Patient :
+// If not found (AVR-NEMA), we consider Slice Location (20,1041)
+// or Location (20,50) as the Z coordinate,
+// 0. for all the coordinates if Slice Location not found
+// TODO : find a way to inform the caller nothing was found
+// TODO : How to tell the caller a wrong number of values was found?
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ * @return
+ */
+float gdcmHeader::GetXImagePosition(void) {
+ float xImPos, yImPos, zImPos;
+ // 0020,0032 : Image Position Patient
+ // 0020,1041 : Slice Location
+ string StrImPos = GetPubElValByNumber(0x0020,0x0032);
+
+ if (StrImPos == "gdcm::Unfound") {
+ dbg.Verbose(0, "gdcmHeader::GetXImagePosition: unfound Image Position Patient");
+ string StrSliceLoc = GetPubElValByNumber(0x0020,0x1041);
+ if (StrSliceLoc == "gdcm::Unfound") {
+ dbg.Verbose(0, "gdcmHeader::GetXImagePosition: unfound Slice Location");
+ // How to tell the caller nothing was found?
+ }
+ return 0.;
+ }
+ if( sscanf( StrImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3)
+ // How to tell the caller a wrong number of values was found?
+ return 0.;
+ //else
+ return xImPos;
+}
+
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ * @return
+ */
+float gdcmHeader::GetYImagePosition(void) {
+ float xImPos, yImPos, zImPos;
+ // 0020,0032 : Image Position Patient
+ // 0020,1041 : Slice Location
+ // 0020,0050 : Location
+ string StrImPos = GetPubElValByNumber(0x0020,0x0032);
+
+ if (StrImPos == "gdcm::Unfound") {
+ dbg.Verbose(0, "gdcmHeader::GetYImagePosition: unfound Image Position Patient");
+ string StrSliceLoc = GetPubElValByNumber(0x0020,0x1041);
+ if (StrSliceLoc == "gdcm::Unfound") {
+ dbg.Verbose(0, "gdcmHeader::GetYImagePosition: unfound Slice Location");
+ // How to tell the caller nothing was found?
+ string StrLocation = GetPubElValByNumber(0x0020,0x0050);
+ if (StrSliceLoc == "gdcm::Unfound") {
+ dbg.Verbose(0, "gdcmHeader::GetYImagePosition: unfound Slice Location");
+ }
+ }
+ return 0.;
+ }
+ if( sscanf( StrImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3)
+ // How to tell the caller a wrong number of values was found?
+ return 0.;
+ //else
+ return yImPos;
+}
+
+/**
+ * \ingroup gdcmHeader
+ * \brief
+ * @return
+ */
+float gdcmHeader::GetZImagePosition(void) {
+ float xImPos, yImPos, zImPos;
+ // 0020,0032 : Image Position Patient
+ // 0020,1041 : Slice Location
+ // 0020,0050 : Location
+
+ // TODO : How to tell the caller nothing was found?
+ // TODO : How to tell the caller a wrong number of values was found?
+
+ string StrImPos = GetPubElValByNumber(0x0020,0x0032);
+ if (StrImPos != "gdcm::Unfound") {
+ if( sscanf( StrImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3) {
+ dbg.Verbose(0, "gdcmHeader::GetZImagePosition: wrong Image Position Patient");
+ return 0.; // bug in the element 0x0020,0x0032
+ } else {
+ return zImPos;
+ }
+ }
+ dbg.Verbose(0, "gdcmHeader::GetYImagePosition: unfound Image Position Patient");
+
+ string StrSliceLocation = GetPubElValByNumber(0x0020,0x1041);
+ if (StrSliceLocation != "gdcm::Unfound") {
+ if( sscanf( StrSliceLocation.c_str(), "%f", &zImPos) !=1) {
+ dbg.Verbose(0, "gdcmHeader::GetZImagePosition: wrong Slice Location");
+ return 0.; // bug in the element 0x0020,0x1041
+ } else {
+ return zImPos;
+ }
+ }
+ dbg.Verbose(0, "gdcmHeader::GetYImagePosition: unfound Slice Location");
+
+ string StrLocation = GetPubElValByNumber(0x0020,0x0050);
+ if (StrLocation != "gdcm::Unfound") {
+ if( sscanf( StrLocation.c_str(), "%f", &zImPos) !=1) {
+ dbg.Verbose(0, "gdcmHeader::GetZImagePosition: wrong Location");
+ return 0.; // bug in the element 0x0020,0x0050
+ } else {
+ return zImPos;
+ }
+ }
+ dbg.Verbose(0, "gdcmHeader::GetYImagePosition: unfound Slice Location");
+
+ return 0.; // Hopeless
+}
+
+
+
git://git.creatis.insa-lyon.fr / gdcm.git / blobdiff