Program: gdcm
Module: $RCSfile: gdcmDocument.cxx,v $
Language: C++
- Date: $Date: 2004/10/22 03:05:41 $
- Version: $Revision: 1.108 $
+ Date: $Date: 2004/10/22 04:13:25 $
+ Version: $Revision: 1.109 $
Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
l'Image). All rights reserved. See Doc/License.txt or
namespace gdcm
{
-
-// Implicit VR Little Endian
-#define UI1_2_840_10008_1_2 "1.2.840.10008.1.2"
-// Explicit VR Little Endian
-#define UI1_2_840_10008_1_2_1 "1.2.840.10008.1.2.1"
-// Deflated Explicit VR Little Endian
-#define UI1_2_840_10008_1_2_1_99 "1.2.840.10008.1.2.1.99"
-// Explicit VR Big Endian
-#define UI1_2_840_10008_1_2_2 "1.2.840.10008.1.2.2"
-// JPEG Baseline (Process 1)
-#define UI1_2_840_10008_1_2_4_50 "1.2.840.10008.1.2.4.50"
-// JPEG Extended (Process 2 & 4)
-#define UI1_2_840_10008_1_2_4_51 "1.2.840.10008.1.2.4.51"
-// JPEG Extended (Process 3 & 5)
-#define UI1_2_840_10008_1_2_4_52 "1.2.840.10008.1.2.4.52"
-// JPEG Spectral Selection, Non-Hierarchical (Process 6 & 8)
-#define UI1_2_840_10008_1_2_4_53 "1.2.840.10008.1.2.4.53"
-// JPEG Full Progression, Non-Hierarchical (Process 10 & 12)
-#define UI1_2_840_10008_1_2_4_55 "1.2.840.10008.1.2.4.55"
-// JPEG Lossless, Non-Hierarchical (Process 14)
-#define UI1_2_840_10008_1_2_4_57 "1.2.840.10008.1.2.4.57"
-// JPEG Lossless, Hierarchical, First-Order Prediction (Process 14,
-// [Selection Value 1])
-#define UI1_2_840_10008_1_2_4_70 "1.2.840.10008.1.2.4.70"
-// JPEG 2000 Lossless
-#define UI1_2_840_10008_1_2_4_90 "1.2.840.10008.1.2.4.90"
-// JPEG 2000
-#define UI1_2_840_10008_1_2_4_91 "1.2.840.10008.1.2.4.91"
-// RLE Lossless
-#define UI1_2_840_10008_1_2_5 "1.2.840.10008.1.2.5"
-// UI1_1_2_840_10008_1_2_5
-#define str2num(str, typeNum) *((typeNum *)(str))
+static const char *TransferSyntaxStrings[] = {
+ // Implicit VR Little Endian
+ "1.2.840.10008.1.2",
+ // Explicit VR Little Endian
+ "1.2.840.10008.1.2.1",
+ // Deflated Explicit VR Little Endian
+ "1.2.840.10008.1.2.1.99",
+ // Explicit VR Big Endian
+ "1.2.840.10008.1.2.2",
+ // JPEG Baseline (Process 1)
+ "1.2.840.10008.1.2.4.50",
+ // JPEG Extended (Process 2 & 4)
+ "1.2.840.10008.1.2.4.51",
+ // JPEG Extended (Process 3 & 5)
+ "1.2.840.10008.1.2.4.52",
+ // JPEG Spectral Selection, Non-Hierarchical (Process 6 & 8)
+ "1.2.840.10008.1.2.4.53",
+ // JPEG Full Progression, Non-Hierarchical (Process 10 & 12)
+ "1.2.840.10008.1.2.4.55",
+ // JPEG Lossless, Non-Hierarchical (Process 14)
+ "1.2.840.10008.1.2.4.57",
+ // JPEG Lossless, Hierarchical, First-Order Prediction (Process 14, [Selection Value 1])
+ "1.2.840.10008.1.2.4.70",
+ // JPEG 2000 Lossless
+ "1.2.840.10008.1.2.4.90",
+ // JPEG 2000
+ "1.2.840.10008.1.2.4.91",
+ // RLE Lossless
+ "1.2.840.10008.1.2.5",
+ // Unknown
+ "Unknown Transfer Syntax"
+};
//-----------------------------------------------------------------------------
// Refer to Document::CheckSwap()
* the current document. False either when the document contains
* no Transfer Syntax, or when the Tranfer Syntaxes doesn't match.
*/
-bool Document::IsGivenTransferSyntax(std::string const & syntaxToCheck)
+TransferSyntaxType Document::GetTransferSyntax()
{
DocEntry *entry = GetDocEntryByNumber(0x0002, 0x0010);
if ( !entry )
{
- return false;
+ return UnknownTS;
}
// The entry might be present but not loaded (parsing and loading
// The actual transfer (as read from disk) might be padded. We
// first need to remove the potential padding. We can make the
// weak assumption that padding was not executed with digits...
- if ( transfer.length() == 0 ) { // for brain damaged headers
- return false;
+ if ( transfer.length() == 0 )
+ {
+ // for brain damaged headers
+ return UnknownTS;
}
- while ( ! isdigit(transfer[transfer.length()-1]) )
+ while ( !isdigit(transfer[transfer.length()-1]) )
{
transfer.erase(transfer.length()-1, 1);
}
- if ( transfer == syntaxToCheck )
+ for (int i = 0; TransferSyntaxStrings[i] != NULL; i++)
{
- return true;
+ if ( TransferSyntaxStrings[i] == transfer )
+ {
+ return TransferSyntaxType(i);
+ }
}
}
- return false;
-}
-
-/**
- * \brief Determines if the Transfer Syntax of the present document
- * corresponds to a Implicit Value Representation of
- * Little Endian.
- * \sa \ref Document::IsGivenTransferSyntax.
- * @return True when ImplicitVRLittleEndian found. False in all other cases.
- */
-bool Document::IsImplicitVRLittleEndianTransferSyntax()
-{
- return IsGivenTransferSyntax(UI1_2_840_10008_1_2);
-}
-
-/**
- * \brief Determines if the Transfer Syntax was already encountered
- * and if it corresponds to a ExplicitVRLittleEndian one.
- * @return True when ExplicitVRLittleEndian found. False in all other cases.
- */
-bool Document::IsExplicitVRLittleEndianTransferSyntax()
-{
- return IsGivenTransferSyntax(UI1_2_840_10008_1_2_1);
-}
-
-/**
- * \brief Determines if the Transfer Syntax was already encountered
- * and if it corresponds to a DeflatedExplicitVRLittleEndian one.
- * @return True when DeflatedExplicitVRLittleEndian found. False in all other cases.
- */
-bool Document::IsDeflatedExplicitVRLittleEndianTransferSyntax()
-{
- return IsGivenTransferSyntax(UI1_2_840_10008_1_2_1_99);
-}
-
-/**
- * \brief Determines if the Transfer Syntax was already encountered
- * and if it corresponds to a Explicit VR Big Endian one.
- * @return True when big endian found. False in all other cases.
- */
-bool Document::IsExplicitVRBigEndianTransferSyntax()
-{
- return IsGivenTransferSyntax(UI1_2_840_10008_1_2_2);
-}
-
-/**
- * \brief Determines if the Transfer Syntax was already encountered
- * and if it corresponds to a JPEGBaseLineProcess1 one.
- * @return True when JPEGBaseLineProcess1found. False in all other cases.
- */
-bool Document::IsJPEGBaseLineProcess1TransferSyntax()
-{
- return IsGivenTransferSyntax(UI1_2_840_10008_1_2_4_50);
-}
-
-/**
- * \brief Determines if the Transfer Syntax was already encountered
- * and if it corresponds to a JPEGExtendedProcess2-4 one.
- * @return True when JPEGExtendedProcess2-4 found. False in all other cases.
- */
-bool Document::IsJPEGExtendedProcess2_4TransferSyntax()
-{
- return IsGivenTransferSyntax(UI1_2_840_10008_1_2_4_51);
-}
-
-/**
- * \brief Determines if the Transfer Syntax was already encountered
- * and if it corresponds to a JPEGExtendeProcess3-5 one.
- * @return True when JPEGExtendedProcess3-5 found. False in all other cases.
- */
-bool Document::IsJPEGExtendedProcess3_5TransferSyntax()
-{
- return IsGivenTransferSyntax(UI1_2_840_10008_1_2_4_52);
-}
-
-/**
- * \brief Determines if the Transfer Syntax was already encountered
- * and if it corresponds to a JPEGSpectralSelectionProcess6-8 one.
- * @return True when JPEGSpectralSelectionProcess6-8 found. False in all
- * other cases.
- */
-bool Document::IsJPEGSpectralSelectionProcess6_8TransferSyntax()
-{
- return IsGivenTransferSyntax(UI1_2_840_10008_1_2_4_53);
+ return UnknownTS;
}
-/**
- * \brief Determines if the Transfer Syntax was already encountered
- * and if it corresponds to a RLE Lossless one.
- * @return True when RLE Lossless found. False in all
- * other cases.
- */
-bool Document::IsRLELossLessTransferSyntax()
-{
- return IsGivenTransferSyntax(UI1_2_840_10008_1_2_5);
-}
-
-/**
- * \brief Determines if Transfer Syntax was already encountered
- * and if it corresponds to a JPEG Lossless one.
- * @return True when RLE Lossless found. False in all
- * other cases.
- */
-
bool Document::IsJPEGLossless()
{
- return ( IsGivenTransferSyntax(UI1_2_840_10008_1_2_4_55)
- || IsGivenTransferSyntax(UI1_2_840_10008_1_2_4_57)
- || IsGivenTransferSyntax(UI1_2_840_10008_1_2_4_70) );
+ TransferSyntaxType r = GetTransferSyntax();
+ return r == JPEGFullProgressionProcess10_12
+ || r == JPEGLosslessProcess14
+ || r == JPEGLosslessProcess14_1;
}
/**
*/
bool Document::IsJPEG2000()
{
- return ( IsGivenTransferSyntax(UI1_2_840_10008_1_2_4_90)
- || IsGivenTransferSyntax(UI1_2_840_10008_1_2_4_91) );
+ TransferSyntaxType r = GetTransferSyntax();
+ return r == JPEG2000Lossless || r == JPEG2000;
}
/**
* of Jpeg encoded Pixel data.
* @return True when any form of JPEG found. False otherwise.
*/
-bool Document::IsJPEGTransferSyntax()
+bool Document::IsJPEG()
{
- return ( IsJPEGBaseLineProcess1TransferSyntax()
- || IsJPEGExtendedProcess2_4TransferSyntax()
- || IsJPEGExtendedProcess3_5TransferSyntax()
- || IsJPEGSpectralSelectionProcess6_8TransferSyntax()
- || IsJPEGLossless()
- || IsJPEG2000() );
+ TransferSyntaxType r = GetTransferSyntax();
+ return r == JPEGBaselineProcess1
+ || r == JPEGExtendedProcess2_4
+ || r == JPEGExtendedProcess3_5
+ || r == JPEGSpectralSelectionProcess6_8
+ || IsJPEGLossless()
+ || IsJPEG2000();
}
-
/**
* \brief Determines if the Transfer Syntax corresponds to encapsulated
* of encoded Pixel Data (as opposed to native).
* @return True when encapsulated. False when native.
*/
-bool Document::IsEncapsulateTransferSyntax()
+bool Document::IsEncapsulate()
{
- return ( IsJPEGTransferSyntax()
- || IsRLELossLessTransferSyntax() );
+ TransferSyntaxType r = GetTransferSyntax();
+ return IsJPEG() || r == RLELossless;
}
/**
if (filetype == ImplicitVR)
{
- std::string implicitVRTransfertSyntax = UI1_2_840_10008_1_2;
- ReplaceOrCreateByNumber(implicitVRTransfertSyntax,0x0002, 0x0010);
+ std::string ts = TransferSyntaxStrings[ImplicitVRLittleEndian];
+ ReplaceOrCreateByNumber(ts, 0x0002, 0x0010);
/// \todo Refer to standards on page 21, chapter 6.2
/// "Value representation": values with a VR of UI shall be
if (filetype == ExplicitVR)
{
- std::string explicitVRTransfertSyntax = UI1_2_840_10008_1_2_1;
- ReplaceOrCreateByNumber(explicitVRTransfertSyntax,0x0002, 0x0010);
+ std::string ts = TransferSyntaxStrings[ExplicitVRLittleEndian];
+ ReplaceOrCreateByNumber(ts, 0x0002, 0x0010);
/// \todo Refer to standards on page 21, chapter 6.2
/// "Value representation": values with a VR of UI shall be
if ( ( newDocEntry->GetGroup() == 0x7fe0 )
&& ( newDocEntry->GetElement() == 0x0010 ) )
{
- if ( IsRLELossLessTransferSyntax() )
+ TransferSyntaxType ts = GetTransferSyntax();
+ if ( ts == RLELossless )
{
long PositionOnEntry = Fp->tellg();
Fp->seekg( newDocEntry->GetOffset(), std::ios_base::beg );
ComputeRLEInfo();
Fp->seekg( PositionOnEntry, std::ios_base::beg );
}
- else
- if ( IsJPEGTransferSyntax() )
+ else if ( IsJPEG() )
{
long PositionOnEntry = Fp->tellg();
Fp->seekg( newDocEntry->GetOffset(), std::ios_base::beg );
// big endian and proceed...
if ( element == 0x0000 && length16 == 0x0400 )
{
- if ( !IsExplicitVRBigEndianTransferSyntax() )
+ TransferSyntaxType ts = GetTransferSyntax();
+ if ( ts != ExplicitVRBigEndian )
{
throw FormatError( "Document::FindDocEntryLength()",
" not explicit VR." );
*/
void Document::ComputeRLEInfo()
{
- if ( ! IsRLELossLessTransferSyntax() )
+ TransferSyntaxType ts = GetTransferSyntax();
+ if ( ts != RLELossless )
{
return;
}
void Document::ComputeJPEGFragmentInfo()
{
// If you need to, look for comments of ComputeRLEInfo().
- if ( ! IsJPEGTransferSyntax() )
+ if ( ! IsJPEG() )
{
return;
}
Program: gdcm
Module: $RCSfile: gdcmDocument.h,v $
Language: C++
- Date: $Date: 2004/10/22 03:05:41 $
- Version: $Revision: 1.53 $
+ Date: $Date: 2004/10/22 04:13:25 $
+ Version: $Revision: 1.54 $
Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
l'Image). All rights reserved. See Doc/License.txt or
namespace gdcm
{
+enum TransferSyntaxType {
+ ImplicitVRLittleEndian = 0,
+ ExplicitVRLittleEndian,
+ DeflatedExplicitVRLittleEndian,
+ ExplicitVRBigEndian,
+ JPEGBaselineProcess1,
+ JPEGExtendedProcess2_4,
+ JPEGExtendedProcess3_5,
+ JPEGSpectralSelectionProcess6_8,
+ JPEGFullProgressionProcess10_12,
+ JPEGLosslessProcess14,
+ JPEGLosslessProcess14_1,
+ JPEG2000Lossless,
+ JPEG2000,
+ RLELossless,
+ UnknownTS
+};
+
//-----------------------------------------------------------------------------
/**
* \brief Derived by both Header and DicomDir
// Informations contained in the parser
virtual bool IsReadable();
- bool IsGivenTransferSyntax(std::string const & syntaxToCheck);
- bool IsImplicitVRLittleEndianTransferSyntax();
- bool IsExplicitVRLittleEndianTransferSyntax();
- bool IsDeflatedExplicitVRLittleEndianTransferSyntax();
- bool IsExplicitVRBigEndianTransferSyntax();
- bool IsRLELossLessTransferSyntax();
- bool IsJPEGBaseLineProcess1TransferSyntax();
- bool IsJPEGExtendedProcess2_4TransferSyntax();
- bool IsJPEGExtendedProcess3_5TransferSyntax();
- bool IsJPEGSpectralSelectionProcess6_8TransferSyntax();
+ TransferSyntaxType GetTransferSyntax();
bool IsJPEGLossless();
bool IsJPEG2000();
- bool IsJPEGTransferSyntax();
- bool IsEncapsulateTransferSyntax();
+ bool IsJPEG();
+ bool IsEncapsulate();
bool IsDicomV3();
FileType GetFileType();
void Write( std::ofstream* fp, FileType type );
ValEntry* ReplaceOrCreateByNumber(std::string const & value,
- uint16_t group, uint16_t elem,
- std::string const & VR ="unkn");
+ uint16_t group, uint16_t elem,
+ std::string const & VR ="unkn");
BinEntry* ReplaceOrCreateByNumber(uint8_t* binArea, int lgth,
- uint16_t group, uint16_t elem,
- std::string const & VR="unkn");
+ uint16_t group, uint16_t elem,
+ std::string const & VR="unkn");
SeqEntry* ReplaceOrCreateByNumber(uint16_t group, uint16_t elem);
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