dcitem.h

转化为DIB位图再显示出来的dicom文件C++代码

//
// SUPPORT FUNCTIONS
//


// Function: newDicomElement
// creates a new DicomElement from a Tag.
//
// Input:
//   tag    : Tag of the new element
//   length : length of the element value
//
// Output:
//   newElement: point of a heap allocated new element. If the tag does not
//               describe a dicom element or has ambigious VR (e.g. EVR_ox)
//               a NULL pointer is returned.
//
// Result:
//   EC_Normal:     tag describes an element (possibly with ambiguous VR)
//   EC_InvalidTag: tag describes an item begin or an unknown element
//   EC_SequEnd:    tag describes a sequence delimitation element
//   EC_ItemEnd:    tag describes an item delmitation element
//   other: an error
OFCondition newDicomElement(DcmElement *&newElement,
                            DcmTag &tag,
                            const Uint32 length,
                            DcmPrivateTagCache *privateCreatorCache,
                            OFBool& readAsUN);

OFCondition newDicomElement(DcmElement *&newElement,
                            const DcmTag &tag,
                            const Uint32 length = 0);

// Functions: newDicomElement
// creates a new DicomElement from a Tag. They differ from the above functions
// in not returning a condition.
DcmElement *newDicomElement(const DcmTag &tag,
                            const Uint32 length = 0);

// Function: nextUp
// pop Object from stack and get next Object in top of stack
OFCondition nextUp(DcmStack &st);


#endif // DCITEM_H


/*
** CVS/RCS Log:
** $Log: dcitem.h,v $
** Revision 1.53  2005/12/08 16:28:19  meichel
** Changed include path schema for all DCMTK header files
**
** Revision 1.52  2005/11/15 18:28:02  meichel
** Added new global flag dcmEnableUnknownVRConversion that enables the automatic
**   re-conversion of defined length UN elements read in an explicit VR transfer
**   syntax, if the real VR is defined in the data dictionary. Default is OFFalse,
**   i.e. to retain the previous behavior.
**
** Revision 1.51  2005/06/24 10:03:14  joergr
** Added support for internal VR "xs" to putAndInsertXXX() helper methods.
**
** Revision 1.50  2004/07/01 12:28:25  meichel
** Introduced virtual clone method for DcmObject and derived classes.
**
** Revision 1.49  2004/02/04 16:02:08  joergr
** Removed pointer declaration from parameter "resultStack" in method
** findAndGetElements().
**
** Revision 1.48  2003/10/08 10:24:40  joergr
** Added support for AT, OB, OF, OW, SL, SS, UL, US to putAndInsertString().
**
** Revision 1.47  2003/07/16 14:34:05  joergr
** Added new function findAndGetSequence().
**
** Revision 1.46  2003/06/26 09:17:25  onken
** Added commandline-application dcmodify.
**
** Revision 1.45  2003/06/12 13:33:46  joergr
** Fixed inconsistent API documentation reported by Doxygen.
**
** Revision 1.44  2003/06/02 17:16:23  joergr
** Added new helper function DcmItem::findAndCopyElement().
**
** Revision 1.43  2003/06/02 16:58:12  meichel
** Renamed local variables to avoid name clashes with STL
**
** Revision 1.42  2003/05/20 09:01:58  joergr
** Added new helper methods: findAndGetElement(), findAndGetUint32Array(),
** FindAndGetSint32Array(), findAndGetFloat64Array(), findAndDeleteElement().
** Enhanced findAndGetSequenceItem() and findOrCreateSequenceItem() by checking
** the return value of ident() - avoids crashes when applied to non-sequence
** elements.
**
** Revision 1.41  2002/12/09 09:31:15  wilkens
** Modified/Added doc++ documentation.
**
** Revision 1.40  2002/12/06 12:49:10  joergr
** Enhanced "print()" function by re-working the implementation and replacing
** the boolean "showFullData" parameter by a more general integer flag.
** Added doc++ documentation.
** Made source code formatting more consistent with other modules/files.
**
** Revision 1.39  2002/08/27 16:55:34  meichel
** Initial release of new DICOM I/O stream classes that add support for stream
**   compression (deflated little endian explicit VR transfer syntax)
**
** Revision 1.38  2002/08/02 08:42:44  joergr
** Added optional 'pos' parameter to the putAndInsertXXX() methods.
**
** Revision 1.37  2002/07/23 14:21:26  meichel
** Added support for private tag data dictionaries to dcmdata
**
** Revision 1.36  2002/06/26 15:47:40  joergr
** Added support for polymorp OB/OW value representation (e.g. pixel data) to
** putAndInsertUint8/16Array() methods.
**
** Revision 1.35  2002/05/17 09:58:14  meichel
** fixed bug in DcmItem which caused the parser to fail if the same attribute
**   tag appeared twice within one dataset (which is illegal in DICOM anyway).
**   Added console warning if the attributes read are not in ascending order.
**
** Revision 1.34  2002/04/25 10:06:46  joergr
** Added support for XML output of DICOM objects.
**
** Revision 1.33  2001/12/18 11:37:24  joergr
** Added helper method allowing to create and insert empty elements into an
** item/dataset.
**
** Revision 1.32  2001/11/16 15:54:38  meichel
** Adapted digital signature code to final text of supplement 41.
**
** Revision 1.31  2001/11/09 15:51:59  joergr
** Added new helper routines for managing sequences and items.
**
** Revision 1.30  2001/10/10 15:14:04  joergr
** Changed parameter DcmTagKey to DcmTag in DcmItem::putAndInsert... methods
** to support elements which are not in the data dictionary (e.g. private
** extensions).
**
** Revision 1.29  2001/10/02 11:46:45  joergr
** Added functions to get/put 8 bit values/arrays from/to an item/dataset.
**
** Revision 1.28  2001/10/01 15:01:14  joergr
** Introduced new general purpose functions to get/put DICOM element values
** from/to an item/dataset - removed some old and rarely used functions.
**
** Revision 1.27  2001/09/25 17:19:26  meichel
** Adapted dcmdata to class OFCondition
**
** Revision 1.26  2001/06/01 15:48:40  meichel
** Updated copyright header
**
** Revision 1.25  2000/11/07 16:56:06  meichel
** Initial release of dcmsign module for DICOM Digital Signatures
**
** Revision 1.24  2000/04/14 15:31:32  meichel
** Removed default value from output stream passed to print() method.
**   Required for use in multi-thread environments.
**
** Revision 1.23  2000/03/08 16:26:15  meichel
** Updated copyright header.
**
** Revision 1.22  2000/03/03 14:05:24  meichel
** Implemented library support for redirecting error messages into memory
**   instead of printing them to stdout/stderr for GUI applications.
**
** Revision 1.21  2000/02/10 10:50:51  joergr
** Added new feature to dcmdump (enhanced print method of dcmdata): write
** pixel data/item value fields to raw files.
**
** Revision 1.20  1999/03/31 09:24:40  meichel
** Updated copyright header in module dcmdata
**
** Revision 1.19  1998/07/15 15:48:48  joergr
** Removed several compiler warnings reported by gcc 2.8.1 with
** additional options, e.g. missing copy constructors and assignment
** operators, initialization of member variables in the body of a
** constructor instead of the member initialization list, hiding of
** methods by use of identical names, uninitialized member variables,
** missing const declaration of char pointers. Replaced tabs by spaces.
**
** Revision 1.18  1997/09/22 14:50:43  hewett
** - Added 2 simple methods to test for the existance of an attribute
**   to DcmItem class (tagExists and tagExistsWithValue).  This code
**   was part of dcmgpdir.cc but is more generally useful.
** - Added 2 methods to find an attribute and retrieve numeric values
**   to DcmItem class (findIntegerNumber and findRealNumber).  The old
**   method findLong is now marked as obsolete and reimplemented using
**   findIntegerNumber.
**
** Revision 1.17  1997/09/11 15:13:11  hewett
** Modified getOFString method arguments by removing a default value
** for the pos argument.  By requiring the pos argument to be provided
** ensures that callers realise getOFString only gets one component of
** a multi-valued string.
**
** Revision 1.16  1997/08/29 08:32:39  andreas
** - Added methods getOFString and getOFStringArray for all
**   string VRs. These methods are able to normalise the value, i. e.
**   to remove leading and trailing spaces. This will be done only if
**   it is described in the standard that these spaces are not relevant.
**   These methods do not test the strings for conformance, this means
**   especially that they do not delete spaces where they are not allowed!
**   getOFStringArray returns the string with all its parts separated by \
**   and getOFString returns only one value of the string.
**   CAUTION: Currently getString returns a string with trailing
**   spaces removed (if dcmEnableAutomaticInputDataCorrection == OFTrue) and
**   truncates the original string (since it is not copied!). If you rely on this
**   behaviour please change your application now.
**   Future changes will ensure that getString returns the original
**   string from the DICOM object (NULL terminated) inclusive padding.
**   Currently, if you call getOF... before calling getString without
**   normalisation, you can get the original string read from the DICOM object.
**
** Revision 1.15  1997/07/21 08:25:08  andreas
** - Replace all boolean types (BOOLEAN, CTNBOOLEAN, DICOM_BOOL, BOOL)
**   with one unique boolean type OFBool.
**
** Revision 1.14  1997/07/07 07:42:03  andreas
** - Changed parameter type DcmTag & to DcmTagKey & in all search functions
**   in DcmItem, DcmSequenceOfItems, DcmDirectoryRecord and DcmObject
**
** Revision 1.13  1997/05/30 06:45:42  andreas
** - fixed problem of inconsistent interfaces and implementation that the
**   syntax check of GNU C++ does not find.
**
** Revision 1.12  1997/05/27 13:48:28  andreas
** - Add method canWriteXfer to class DcmObject and all derived classes.
**   This method checks whether it is possible to convert the original
**   transfer syntax to an new transfer syntax. The check is used in the
**   dcmconv utility to prohibit the change of a compressed transfer
**   syntax to a uncompressed.
**
** Revision 1.11  1997/05/16 08:13:43  andreas
** - Revised handling of GroupLength elements and support of
**   DataSetTrailingPadding elements. The enumeratio E_GrpLenEncoding
**   got additional enumeration values (for a description see dctypes.h).
**   addGroupLength and removeGroupLength methods are replaced by
**   computeGroupLengthAndPadding. To support Padding, the parameters of
**   element and sequence write functions changed.
** - Added a new method calcElementLength to calculate the length of an
**   element, item or sequence. For elements it returns the length of
**   tag, length field, vr field, and value length, for item and
**   sequences it returns the length of the whole item. sequence including
**   the Delimitation tag (if appropriate).  It can never return
**   UndefinedLength.
** - Deleted obsolete method DcmItem::calcHeaderLength because the
**   samce functionality is performed by DcmXfer::sizeofTagHeader
**
** Revision 1.10  1996/08/05 08:45:23  andreas
** new print routine with additional parameters:
**         - print into files
**         - fix output length for elements
** corrected error in search routine with parameter ESM_fromStackTop
**
** Revision 1.9  1996/07/17 12:38:58  andreas
** new nextObject to iterate a DicomDataset, DicomFileFormat, Item, ...
**
** Revision 1.8  1996/04/29 15:08:53  hewett
** Replaced DcmItem::findInt(...) with the more general DcmItem::findLong(...).
**
** Revision 1.7  1996/04/16 16:00:05  andreas
** - added const for Tag in newDicomElement
**
** Revision 1.6  1996/03/28 18:52:30  hewett
** Added 2 simple find&get methods (findString & findInt).
**
** Revision 1.5  1996/01/29 13:38:12  andreas
** - new put method for every VR to put value as a string
** - better and unique print methods
**
** Revision 1.4  1996/01/09 11:06:15  andreas
** New Support for Visual C++
** Correct problems with inconsistent const declarations
**
** Revision 1.3  1996/01/05 13:22:56  andreas
** - changed to support new streaming facilities
** - more cleanups
** - merged read / write methods for block and file transfer
**
*/