+//-----------------------------------------------------------------------------
+// Constructor / Destructor
+/**
+ * \brief Constructor
+ * @param filename name of the file whose header we want to analyze
+ */
+File::File( std::string const &filename )
+ :Document( filename )
+{
+ RLEInfo = new RLEFramesInfo;
+ JPEGInfo = new JPEGFragmentsInfo;
+
+ // for some ACR-NEMA images GrPixel, NumPixel is *not* 7fe0,0010
+ // We may encounter the 'RETired' (0x0028, 0x0200) tag
+ // (Image Location") . This entry contains the number of
+ // the group that contains the pixel data (hence the "Pixel Data"
+ // is found by indirection through the "Image Location").
+ // Inside the group pointed by "Image Location" the searched element
+ // is conventionally the element 0x0010 (when the norm is respected).
+ // When the "Image Location" is missing we default to group 0x7fe0.
+ // Note: this IS the right place for the code
+
+ // Image Location
+ const std::string &imgLocation = GetEntryValue(0x0028, 0x0200);
+ if ( imgLocation == GDCM_UNFOUND )
+ {
+ // default value
+ GrPixel = 0x7fe0;
+ }
+ else
+ {
+ GrPixel = (uint16_t) atoi( imgLocation.c_str() );
+ }
+
+ // sometimes Image Location value doesn't follow
+ // the supposed processor endianness.
+ // see gdcmData/cr172241.dcm
+ if ( GrPixel == 0xe07f )
+ {
+ GrPixel = 0x7fe0;
+ }
+
+ if ( GrPixel != 0x7fe0 )
+ {
+ // This is a kludge for old dirty Philips imager.
+ NumPixel = 0x1010;
+ }
+ else
+ {
+ NumPixel = 0x0010;
+ }
+
+ // Now, we know GrPixel and NumPixel.
+ // Let's create a VirtualDictEntry to allow a further VR modification
+ // and force VR to match with BitsAllocated.
+ DocEntry *entry = GetDocEntry(GrPixel, NumPixel);
+ if ( entry != 0 )
+ {
+ // Compute the RLE or JPEG info
+ OpenFile();
+ std::string ts = GetTransferSyntax();
+ Fp->seekg( entry->GetOffset(), std::ios::beg );
+ if ( Global::GetTS()->IsRLELossless(ts) )
+ ComputeRLEInfo();
+ else if ( Global::GetTS()->IsJPEG(ts) )
+ ComputeJPEGFragmentInfo();
+ CloseFile();
+
+ // Create a new BinEntry to change the the DictEntry
+ // The changed DictEntry will have
+ // - a correct PixelVR OB or OW)
+ // - a VM to "PXL"
+ // - the name to "Pixel Data"
+ BinEntry *oldEntry = dynamic_cast<BinEntry *>(entry);
+ if(oldEntry)
+ {
+ std::string PixelVR;
+ // 8 bits allocated is a 'O Bytes' , as well as 24 (old ACR-NEMA RGB)
+ // more than 8 (i.e 12, 16) is a 'O Words'
+ if ( GetBitsAllocated() == 8 || GetBitsAllocated() == 24 )
+ PixelVR = "OB";
+ else
+ PixelVR = "OW";
+
+ // Change only made if usefull
+ if( PixelVR != oldEntry->GetVR() )
+ {
+ DictEntry* newDict = NewVirtualDictEntry(GrPixel,NumPixel,
+ PixelVR,"1","Pixel Data");
+
+ BinEntry *newEntry = new BinEntry(newDict);
+ newEntry->Copy(entry);
+ newEntry->SetBinArea(oldEntry->GetBinArea(),oldEntry->IsSelfArea());
+ oldEntry->SetSelfArea(false);
+
+ RemoveEntry(oldEntry);
+ AddEntry(newEntry);
+ }
+ }
+ }
+}
+
+/**
+ * \brief Constructor used when we want to generate dicom files from scratch
+ */
+File::File():
+ Document()
+{
+ RLEInfo = new RLEFramesInfo;
+ JPEGInfo = new JPEGFragmentsInfo;
+ InitializeDefaultFile();
+}
+
+/**
+ * \brief Canonical destructor.
+ */
+File::~File ()
+{
+ if( RLEInfo )
+ delete RLEInfo;
+ if( JPEGInfo )
+ delete JPEGInfo;
+}
+
+//-----------------------------------------------------------------------------
+// Public
+/**
+ * \brief This predicate, based on hopefully reasonable heuristics,
+ * decides whether or not the current File was properly parsed
+ * and contains the mandatory information for being considered as
+ * a well formed and usable Dicom/Acr File.
+ * @return true when File is the one of a reasonable Dicom/Acr file,
+ * false otherwise.
+ */
+bool File::IsReadable()
+{
+ if( !Document::IsReadable() )
+ {
+ return false;
+ }
+
+ const std::string &res = GetEntryValue(0x0028, 0x0005);
+ if ( res != GDCM_UNFOUND && atoi(res.c_str()) > 4 )
+ {
+ return false; // Image Dimensions
+ }
+ if ( !GetDocEntry(0x0028, 0x0100) )
+ {
+ return false; // "Bits Allocated"
+ }
+ if ( !GetDocEntry(0x0028, 0x0101) )
+ {
+ return false; // "Bits Stored"
+ }
+ if ( !GetDocEntry(0x0028, 0x0102) )
+ {
+ return false; // "High Bit"
+ }
+ if ( !GetDocEntry(0x0028, 0x0103) )
+ {
+ return false; // "Pixel Representation" i.e. 'Sign'
+ }
+
+ return true;
+}
+
+/**
+ * \brief gets the info from 0020,0013 : Image Number else 0.
+ * @return image number
+ */
+int File::GetImageNumber()
+{
+ // The function i atoi() takes the address of an area of memory as
+ // parameter and converts the string stored at that location to an integer
+ // using the external decimal to internal binary conversion rules. This may
+ // be preferable to sscanf() since atoi() is a much smaller, simpler and
+ // faster function. sscanf() can do all possible conversions whereas
+ // atoi() can only do single decimal integer conversions.
+ //0020 0013 IS REL Image Number
+ std::string strImNumber = GetEntryValue(0x0020,0x0013);
+ if ( strImNumber != GDCM_UNFOUND )
+ {
+ return atoi( strImNumber.c_str() );
+ }
+ return 0; //Hopeless
+}
+
+/**
+ * \brief gets the info from 0008,0060 : Modality
+ * @return Modality Type
+ */
+ModalityType File::GetModality()
+{
+ // 0008 0060 CS ID Modality
+ std::string strModality = GetEntryValue(0x0008,0x0060);
+ if ( strModality != GDCM_UNFOUND )
+ {
+ if ( strModality.find("AU") < strModality.length()) return AU;
+ else if ( strModality.find("AS") < strModality.length()) return AS;
+ else if ( strModality.find("BI") < strModality.length()) return BI;
+ else if ( strModality.find("CF") < strModality.length()) return CF;
+ else if ( strModality.find("CP") < strModality.length()) return CP;
+ else if ( strModality.find("CR") < strModality.length()) return CR;
+ else if ( strModality.find("CT") < strModality.length()) return CT;
+ else if ( strModality.find("CS") < strModality.length()) return CS;
+ else if ( strModality.find("DD") < strModality.length()) return DD;
+ else if ( strModality.find("DF") < strModality.length()) return DF;
+ else if ( strModality.find("DG") < strModality.length()) return DG;
+ else if ( strModality.find("DM") < strModality.length()) return DM;
+ else if ( strModality.find("DS") < strModality.length()) return DS;
+ else if ( strModality.find("DX") < strModality.length()) return DX;
+ else if ( strModality.find("ECG") < strModality.length()) return ECG;
+ else if ( strModality.find("EPS") < strModality.length()) return EPS;
+ else if ( strModality.find("FA") < strModality.length()) return FA;
+ else if ( strModality.find("FS") < strModality.length()) return FS;
+ else if ( strModality.find("HC") < strModality.length()) return HC;
+ else if ( strModality.find("HD") < strModality.length()) return HD;
+ else if ( strModality.find("LP") < strModality.length()) return LP;
+ else if ( strModality.find("LS") < strModality.length()) return LS;
+ else if ( strModality.find("MA") < strModality.length()) return MA;
+ else if ( strModality.find("MR") < strModality.length()) return MR;
+ else if ( strModality.find("NM") < strModality.length()) return NM;
+ else if ( strModality.find("OT") < strModality.length()) return OT;
+ else if ( strModality.find("PT") < strModality.length()) return PT;
+ else if ( strModality.find("RF") < strModality.length()) return RF;
+ else if ( strModality.find("RG") < strModality.length()) return RG;
+ else if ( strModality.find("RTDOSE") < strModality.length()) return RTDOSE;
+ else if ( strModality.find("RTIMAGE") < strModality.length()) return RTIMAGE;
+ else if ( strModality.find("RTPLAN") < strModality.length()) return RTPLAN;
+ else if ( strModality.find("RTSTRUCT") < strModality.length()) return RTSTRUCT;
+ else if ( strModality.find("SM") < strModality.length()) return SM;
+ else if ( strModality.find("ST") < strModality.length()) return ST;
+ else if ( strModality.find("TG") < strModality.length()) return TG;
+ else if ( strModality.find("US") < strModality.length()) return US;
+ else if ( strModality.find("VF") < strModality.length()) return VF;
+ else if ( strModality.find("XA") < strModality.length()) return XA;
+ else if ( strModality.find("XC") < strModality.length()) return XC;
+
+ else
+ {
+ /// \todo throw error return value ???
+ /// specified <> unknown in our database
+ return Unknow;
+ }
+ }
+
+ return Unknow;
+}
+
+/**
+ * \brief Retrieve the number of columns of image.
+ * @return The encountered size when found, 0 by default.
+ * 0 means the file is NOT USABLE. The caller will have to check
+ */
+int File::GetXSize()
+{
+ const std::string &strSize = GetEntryValue(0x0028,0x0011);
+ if ( strSize == GDCM_UNFOUND )
+ {
+ return 0;
+ }
+
+ return atoi( strSize.c_str() );
+}
+
+/**
+ * \brief Retrieve the number of lines of image.
+ * \warning The defaulted value is 1 as opposed to File::GetXSize()
+ * @return The encountered size when found, 1 by default
+ * (The ACR-NEMA file contains a Signal, not an Image).
+ */
+int File::GetYSize()
+{
+ const std::string &strSize = GetEntryValue(0x0028,0x0010);
+ if ( strSize != GDCM_UNFOUND )
+ {
+ return atoi( strSize.c_str() );
+ }
+ if ( IsDicomV3() )
+ {
+ return 0;
+ }
+
+ // The Rows (0028,0010) entry was optional for ACR/NEMA. It might
+ // hence be a signal (1D image). So we default to 1:
+ return 1;
+}
+
+/**
+ * \brief Retrieve the number of planes of volume or the number
+ * of frames of a multiframe.
+ * \warning When present we consider the "Number of Frames" as the third
+ * dimension. When Missing we consider the third dimension as
+ * being the ACR-NEMA "Planes" tag content.
+ * @return The encountered size when found, 1 by default (single image).
+ */
+int File::GetZSize()
+{
+ // Both DicomV3 and ACR/Nema consider the "Number of Frames"
+ // as the third dimension.
+ const std::string &strSize = GetEntryValue(0x0028,0x0008);
+ if ( strSize != GDCM_UNFOUND )
+ {
+ return atoi( strSize.c_str() );
+ }
+
+ // We then consider the "Planes" entry as the third dimension
+ const std::string &strSize2 = GetEntryValue(0x0028,0x0012);
+ if ( strSize2 != GDCM_UNFOUND )
+ {
+ return atoi( strSize2.c_str() );
+ }
+
+ return 1;
+}
+
+/**
+ * \brief gets the info from 0028,0030 : Pixel Spacing
+ * else 1.0
+ * @return X dimension of a pixel
+ */
+float File::GetXSpacing()
+{
+ float xspacing, yspacing;
+ const std::string &strSpacing = GetEntryValue(0x0028,0x0030);
+
+ if( strSpacing == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro( "Unfound Pixel Spacing (0028,0030)" );
+ return 1.;
+ }
+
+ int nbValues;
+ if( ( nbValues = sscanf( strSpacing.c_str(),
+ "%f\\%f", &yspacing, &xspacing)) != 2 )
+ {
+ // if no values, xspacing is set to 1.0
+ if( nbValues == 0 )
+ xspacing = 1.0;
+ // if single value is found, xspacing is defaulted to yspacing
+ if( nbValues == 1 )
+ xspacing = yspacing;
+
+ if ( xspacing == 0.0 )
+ xspacing = 1.0;
+
+ return xspacing;
+
+ }
+
+ // to avoid troubles with David Clunie's-like images
+ if ( xspacing == 0. && yspacing == 0.)
+ return 1.;
+
+ if ( xspacing == 0.)
+ {
+ gdcmWarningMacro("gdcmData/CT-MONO2-8-abdo.dcm problem");
+ // seems to be a bug in the header ...
+ nbValues = sscanf( strSpacing.c_str(), "%f\\0\\%f", &yspacing, &xspacing);
+ gdcmAssertMacro( nbValues == 2 );
+ }
+
+ return xspacing;
+}
+
+/**
+ * \brief gets the info from 0028,0030 : Pixel Spacing
+ * else 1.0
+ * @return Y dimension of a pixel
+ */
+float File::GetYSpacing()
+{
+ float yspacing = 1.;
+ std::string strSpacing = GetEntryValue(0x0028,0x0030);
+
+ if ( strSpacing == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro("Unfound Pixel Spacing (0028,0030)");
+ return 1.;
+ }
+
+ // if sscanf cannot read any float value, it won't affect yspacing
+ int nbValues = sscanf( strSpacing.c_str(), "%f", &yspacing);
+
+ // if no values, xspacing is set to 1.0
+ if( nbValues == 0 )
+ yspacing = 1.0;
+
+ if ( yspacing == 0.0 )
+ yspacing = 1.0;
+
+ return yspacing;
+}
+
+/**
+ * \brief gets the info from 0018,0088 : Space Between Slices
+ * else from 0018,0050 : Slice Thickness
+ * else 1.0
+ * @return Z dimension of a voxel-to be
+ */
+float File::GetZSpacing()
+{
+ // 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 Missing,
+ // on suppose que les coupes sont jointives
+
+ const std::string &strSpacingBSlices = GetEntryValue(0x0018,0x0088);
+
+ if ( strSpacingBSlices == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro("Unfound Spacing Between Slices (0018,0088)");
+ const std::string &strSliceThickness = GetEntryValue(0x0018,0x0050);
+ if ( strSliceThickness == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro("Unfound Slice Thickness (0018,0050)");
+ return 1.;
+ }
+ else
+ {
+ // if no 'Spacing Between Slices' is found,
+ // we assume slices join together
+ // (no overlapping, no interslice gap)
+ // if they don't, we're fucked up
+ return (float)atof( strSliceThickness.c_str() );
+ }
+ }
+ //else
+ return (float)atof( strSpacingBSlices.c_str() );
+}
+
+/**
+ * \brief gets the info from 0020,0032 : Image Position Patient
+ * else from 0020,0030 : Image Position (RET)
+ * else 0.
+ * @return up-left image corner X position
+ */
+float File::GetXOrigin()
+{
+ float xImPos, yImPos, zImPos;
+ std::string strImPos = GetEntryValue(0x0020,0x0032);
+
+ if ( strImPos == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro( "Unfound Image Position Patient (0020,0032)");
+ strImPos = GetEntryValue(0x0020,0x0030); // For ACR-NEMA images
+ if ( strImPos == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro( "Unfound Image Position (RET) (0020,0030)");
+ return 0.;
+ }
+ }
+
+ if( sscanf( strImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3 )
+ {
+ return 0.;
+ }
+
+ return xImPos;
+}
+
+/**
+ * \brief gets the info from 0020,0032 : Image Position Patient
+ * else from 0020,0030 : Image Position (RET)
+ * else 0.
+ * @return up-left image corner Y position
+ */
+float File::GetYOrigin()
+{
+ float xImPos, yImPos, zImPos;
+ std::string strImPos = GetEntryValue(0x0020,0x0032);
+
+ if ( strImPos == GDCM_UNFOUND)
+ {
+ gdcmWarningMacro( "Unfound Image Position Patient (0020,0032)");
+ strImPos = GetEntryValue(0x0020,0x0030); // For ACR-NEMA images
+ if ( strImPos == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro( "Unfound Image Position (RET) (0020,0030)");
+ return 0.;
+ }
+ }
+
+ if( sscanf( strImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3 )
+ {
+ return 0.;
+ }
+
+ return yImPos;
+}
+
+/**
+ * \brief gets the info from 0020,0032 : Image Position Patient
+ * else from 0020,0030 : Image Position (RET)
+ * else from 0020,1041 : Slice Location
+ * else from 0020,0050 : Location
+ * else 0.
+ * @return up-left image corner Z position
+ */
+float File::GetZOrigin()
+{
+ float xImPos, yImPos, zImPos;
+ std::string strImPos = GetEntryValue(0x0020,0x0032);
+
+ if ( strImPos != GDCM_UNFOUND )
+ {
+ if( sscanf( strImPos.c_str(), "%f\\%f\\%f", &xImPos, &yImPos, &zImPos) != 3)
+ {
+ gdcmWarningMacro( "Wrong Image Position Patient (0020,0032)");
+ return 0.; // bug in the element 0x0020,0x0032
+ }
+ else
+ {
+ return zImPos;
+ }
+ }
+
+ strImPos = GetEntryValue(0x0020,0x0030); // For ACR-NEMA images
+ if ( strImPos != GDCM_UNFOUND )
+ {
+ if( sscanf( strImPos.c_str(),
+ "%f\\%f\\%f", &xImPos, &yImPos, &zImPos ) != 3 )
+ {
+ gdcmWarningMacro( "Wrong Image Position (RET) (0020,0030)");
+ return 0.; // bug in the element 0x0020,0x0032
+ }
+ else
+ {
+ return zImPos;
+ }
+ }
+
+ std::string strSliceLocation = GetEntryValue(0x0020,0x1041); // for *very* old ACR-NEMA images
+ if ( strSliceLocation != GDCM_UNFOUND )
+ {
+ if( sscanf( strSliceLocation.c_str(), "%f", &zImPos) != 1)
+ {
+ gdcmWarningMacro( "Wrong Slice Location (0020,1041)");
+ return 0.; // bug in the element 0x0020,0x1041
+ }
+ else
+ {
+ return zImPos;
+ }
+ }
+ gdcmWarningMacro( "Unfound Slice Location (0020,1041)");
+
+ std::string strLocation = GetEntryValue(0x0020,0x0050);
+ if ( strLocation != GDCM_UNFOUND )
+ {
+ if( sscanf( strLocation.c_str(), "%f", &zImPos) != 1)
+ {
+ gdcmWarningMacro( "Wrong Location (0020,0050)");
+ return 0.; // bug in the element 0x0020,0x0050
+ }
+ else
+ {
+ return zImPos;
+ }
+ }
+ gdcmWarningMacro( "Unfound Location (0020,0050)");
+
+ return 0.; // Hopeless
+}
+
+/**
+ * \brief gets the info from 0020,0037 : Image Orientation Patient
+ * (needed to organize DICOM files based on their x,y,z position)
+ * @param iop adress of the (6)float aray to receive values
+ * @return cosines of image orientation patient
+ */
+void File::GetImageOrientationPatient( float iop[6] )
+{
+ std::string strImOriPat;
+ //iop is supposed to be float[6]
+ iop[0] = iop[1] = iop[2] = iop[3] = iop[4] = iop[5] = 0.;
+
+ // 0020 0037 DS REL Image Orientation (Patient)
+ if ( (strImOriPat = GetEntryValue(0x0020,0x0037)) != GDCM_UNFOUND )
+ {
+ if( sscanf( strImOriPat.c_str(), "%f\\%f\\%f\\%f\\%f\\%f",
+ &iop[0], &iop[1], &iop[2], &iop[3], &iop[4], &iop[5]) != 6 )
+ {
+ gdcmWarningMacro( "Wrong Image Orientation Patient (0020,0037). Less than 6 values were found." );
+ }
+ }
+ //For ACR-NEMA
+ // 0020 0035 DS REL Image Orientation (RET)
+ else if ( (strImOriPat = GetEntryValue(0x0020,0x0035)) != GDCM_UNFOUND )
+ {
+ if( sscanf( strImOriPat.c_str(), "%f\\%f\\%f\\%f\\%f\\%f",
+ &iop[0], &iop[1], &iop[2], &iop[3], &iop[4], &iop[5]) != 6 )
+ {
+ gdcmWarningMacro( "wrong Image Orientation Patient (0020,0035). Less than 6 values were found." );
+ }
+ }
+}
+
+/**
+ * \brief Retrieve the number of Bits Stored (actually used)
+ * (as opposed to number of Bits Allocated)
+ * @return The encountered number of Bits Stored, 0 by default.
+ * 0 means the file is NOT USABLE. The caller has to check it !
+ */
+int File::GetBitsStored()
+{
+ std::string strSize = GetEntryValue( 0x0028, 0x0101 );
+ if ( strSize == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro("(0028,0101) is supposed to be mandatory");
+ return 0; // It's supposed to be mandatory
+ // the caller will have to check
+ }
+ return atoi( strSize.c_str() );
+}
+
+/**
+ * \brief Retrieve the number of Bits Allocated
+ * (8, 12 -compacted ACR-NEMA files, 16, ...)
+ * @return The encountered number of Bits Allocated, 0 by default.
+ * 0 means the file is NOT USABLE. The caller has to check it !
+ */
+int File::GetBitsAllocated()
+{
+ std::string strSize = GetEntryValue(0x0028,0x0100);
+ if ( strSize == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro( "(0028,0100) is supposed to be mandatory");
+ return 0; // It's supposed to be mandatory
+ // the caller will have to check
+ }
+ return atoi( strSize.c_str() );
+}
+
+/**
+ * \brief Retrieve the high bit position.
+ * \warning The method defaults to 0 when information is Missing.
+ * The responsability of checking this value is left to the caller.
+ * @return The high bit positin when present. 0 when Missing.
+ */
+int File::GetHighBitPosition()
+{
+ std::string strSize = GetEntryValue( 0x0028, 0x0102 );
+ if ( strSize == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro( "(0028,0102) is supposed to be mandatory");
+ return 0;
+ }
+ return atoi( strSize.c_str() );
+}
+
+/**
+ * \brief Retrieve the number of Samples Per Pixel
+ * (1 : gray level, 3 : RGB -1 or 3 Planes-)
+ * @return The encountered number of Samples Per Pixel, 1 by default.
+ * (Gray level Pixels)
+ */
+int File::GetSamplesPerPixel()
+{
+ const std::string &strSize = GetEntryValue(0x0028,0x0002);
+ if ( strSize == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro( "(0028,0002) is supposed to be mandatory");
+ return 1; // Well, it's supposed to be mandatory ...
+ // but sometimes it's missing : *we* assume Gray pixels
+ }
+ return atoi( strSize.c_str() );
+}
+
+/**
+ * \brief Retrieve the Planar Configuration for RGB images
+ * (0 : RGB Pixels , 1 : R Plane + G Plane + B Plane)
+ * @return The encountered Planar Configuration, 0 by default.
+ */
+int File::GetPlanarConfiguration()
+{
+ std::string strSize = GetEntryValue(0x0028,0x0006);
+ if ( strSize == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro( "Not found : Planar Configuration (0028,0006)");
+ return 0;
+ }
+ return atoi( strSize.c_str() );
+}
+
+/**
+ * \brief Return the size (in bytes) of a single pixel of data.
+ * @return The size in bytes of a single pixel of data; 0 by default
+ * 0 means the file is NOT USABLE; the caller will have to check
+ */
+int File::GetPixelSize()
+{
+ // 0028 0100 US IMG Bits Allocated
+ // (in order no to be messed up by old RGB images)
+ // if (File::GetEntryValue(0x0028,0x0100) == "24")
+ // return 3;
+
+ std::string pixelType = GetPixelType();
+ if ( pixelType == "8U" || pixelType == "8S" )
+ {
+ return 1;
+ }
+ if ( pixelType == "16U" || pixelType == "16S")
+ {
+ return 2;
+ }
+ if ( pixelType == "32U" || pixelType == "32S")
+ {
+ return 4;
+ }
+ if ( pixelType == "FD" )
+ {
+ return 8;
+ }
+ gdcmWarningMacro( "Unknown pixel type");
+ return 0;
+}
+
+/**
+ * \brief Build the Pixel Type of the image.
+ * Possible values are:
+ * - 8U unsigned 8 bit,
+ * - 8S signed 8 bit,
+ * - 16U unsigned 16 bit,
+ * - 16S signed 16 bit,
+ * - 32U unsigned 32 bit,
+ * - 32S signed 32 bit,
+ * - FD floating double 64 bits (Not kosher DICOM, but so usefull!)
+ * \warning 12 bit images appear as 16 bit.
+ * 24 bit images appear as 8 bit
+ * @return 0S if nothing found. NOT USABLE file. The caller has to check
+ */
+std::string File::GetPixelType()
+{
+ std::string bitsAlloc = GetEntryValue(0x0028, 0x0100); // Bits Allocated
+ if ( bitsAlloc == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro( "Missing Bits Allocated (0028,0100)");
+ bitsAlloc = "16"; // default and arbitrary value, not to polute the output
+ }
+
+ if ( bitsAlloc == "64" )
+ {
+ return "FD";
+ }
+ else if ( bitsAlloc == "12" )
+ {
+ // It will be unpacked
+ bitsAlloc = "16";
+ }
+ else if ( bitsAlloc == "24" )
+ {
+ // (in order no to be messed up
+ bitsAlloc = "8"; // by old RGB images)
+ }
+
+ std::string sign = GetEntryValue(0x0028, 0x0103);//"Pixel Representation"
+
+ if (sign == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro( "Missing Pixel Representation (0028,0103)");
+ sign = "U"; // default and arbitrary value, not to polute the output
+ }
+ else if ( sign == "0" )
+ {
+ sign = "U";
+ }
+ else
+ {
+ sign = "S";
+ }
+ return bitsAlloc + sign;
+}
+
+/**
+ * \brief Check whether the pixels are signed or UNsigned data.
+ * \warning The method defaults to false (UNsigned) when information is Missing.
+ * The responsability of checking this value is left to the caller.
+ * @return True when signed, false when UNsigned
+ */
+bool File::IsSignedPixelData()
+{
+ std::string strSize = GetEntryValue( 0x0028, 0x0103 );
+ if ( strSize == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro( "(0028,0103) is supposed to be mandatory");
+ return false;
+ }
+ int sign = atoi( strSize.c_str() );
+ if ( sign == 0 )
+ {
+ return false;
+ }
+ return true;
+}
+
+/**
+ * \brief Check whether this a monochrome picture or not by accessing
+ * the "Photometric Interpretation" tag ( 0x0028, 0x0004 ).
+ * @return true when "MONOCHROME1" or "MONOCHROME2". False otherwise.
+ */
+bool File::IsMonochrome()
+{
+ const std::string &PhotometricInterp = GetEntryValue( 0x0028, 0x0004 );
+ if ( Util::DicomStringEqual(PhotometricInterp, "MONOCHROME1")
+ || Util::DicomStringEqual(PhotometricInterp, "MONOCHROME2") )
+ {
+ return true;
+ }
+ if ( PhotometricInterp == GDCM_UNFOUND )
+ {
+ gdcmWarningMacro( "Not found : Photometric Interpretation (0028,0004)");
+ }
+ return false;
+}