dcmdata/include/dcmtk/dcmdata/dcvr.h

/*
 *
 *  Copyright (C) 1994-2010, OFFIS e.V.
 *  All rights reserved.  See COPYRIGHT file for details.
 *
 *  This software and supporting documentation were developed by
 *
 *    OFFIS e.V.
 *    R&D Division Health
 *    Escherweg 2
 *    D-26121 Oldenburg, Germany
 *
 *
 *  Module:  dcmdata
 *
 *  Author:  Gerd Ehlers, Andreas Barth, Andrew Hewett
 *
 *  Purpose: Definition of the DcmVR class for Value Representation
 *
 *  Last Update:      $Author: joergr $
 *  Update Date:      $Date: 2010-10-14 13:15:42 $
 *  CVS/RCS Revision: $Revision: 1.28 $
 *  Status:           $State: Exp $
 *
 *  CVS/RCS Log at end of file
 *
 */

#ifndef DCMVR_H
#define DCMVR_H 1

#include "dcmtk/config/osconfig.h"    /* make sure OS specific configuration is included first */
#include "dcmtk/ofstd/ofglobal.h"

extern OFGlobal<OFBool> dcmEnableUnknownVRGeneration; /* default OFTrue */

extern OFGlobal<OFBool> dcmEnableUnlimitedTextVRGeneration; /* default OFTrue */

extern OFGlobal<OFBool> dcmEnableUnknownVRConversion; /* default OFFalse */

/*
** VR Enumerations.
** NB: The order of entries has to conform to the order in DcmVRDict (see dcmvr.cc)!
**     If not an error message is reported and the program aborts (only in DEBUG mode).
*/
enum DcmEVR
{

    EVR_AE,

    EVR_AS,

    EVR_AT,

    EVR_CS,

    EVR_DA,

    EVR_DS,

    EVR_DT,

    EVR_FL,

    EVR_FD,

    EVR_IS,

    EVR_LO,

    EVR_LT,

    EVR_OB,

    EVR_OF,

    EVR_OW,

    EVR_PN,

    EVR_SH,

    EVR_SL,

    EVR_SQ,

    EVR_SS,

    EVR_ST,

    EVR_TM,

    EVR_UI,

    EVR_UL,

    EVR_US,

    EVR_UT,

    EVR_ox,

    EVR_xs,

    EVR_lt,

    EVR_na,

    EVR_up,

    EVR_item,

    EVR_metainfo,

    EVR_dataset,

    EVR_fileFormat,

    EVR_dicomDir,

    EVR_dirRecord,

    EVR_pixelSQ,

    EVR_pixelItem,

    EVR_UNKNOWN,

    EVR_UN,

    EVR_PixelData,

    EVR_OverlayData,

    EVR_UNKNOWN2B
};


class DcmVR
{
public:

    DcmVR()
    : vr(EVR_UNKNOWN)
    {
    }

    DcmVR(DcmEVR evr)
    : vr(EVR_UNKNOWN)
    {
      // the set method is safeguarded against incorrect passing of integer values
      setVR(evr);
    }

    DcmVR(const char* vrName)
    : vr(EVR_UNKNOWN)
    {
      setVR(vrName);
    }

    DcmVR(const DcmVR& avr)
    : vr(avr.vr)
    {
    }

    void setVR(DcmEVR evr);

    void setVR(const char* vrName);

    void setVR(const DcmVR& avr) { vr = avr.vr; }

    DcmVR& operator=(const DcmVR& arg)
    {
      vr = arg.vr;
      return *this;
    }

    DcmEVR getEVR() const { return vr; }

    DcmEVR getValidEVR() const;

    const char* getVRName() const ;

    const char* getValidVRName() const;

    size_t getValueWidth() const;

    OFBool isStandard() const;

    OFBool isForInternalUseOnly() const;

    OFBool isaString() const;

    OFBool usesExtendedLengthEncoding() const;

    OFBool isEquivalent(const DcmVR& avr) const;

    /* minimum and maximum length of a value with this VR
    ** (in bytes assuming single byte characters)
    */

    Uint32 getMinValueLength() const;

    Uint32 getMaxValueLength() const;

private:
    DcmEVR vr;
};


#endif /* !DCMVR_H */


/*
 * CVS/RCS Log:
 * $Log: dcvr.h,v $
 * Revision 1.28  2010-10-14 13:15:42  joergr
 * Updated copyright header. Added reference to COPYRIGHT file.
 *
 * Revision 1.27  2010-03-01 09:08:45  uli
 * Removed some unnecessary include directives in the headers.
 *
 * Revision 1.26  2008-06-23 12:09:13  joergr
 * Fixed inconsistencies in Doxygen API documentation.
 *
 * Revision 1.25  2007/11/29 14:30:35  meichel
 * Updated doxygen API documentation
 *
 * Revision 1.24  2005/12/08 16:28:50  meichel
 * Changed include path schema for all DCMTK header files
 *
 * Revision 1.23  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 1.22  2005/11/15 16:59:24  meichel
 * Added new pseudo VR type EVR_lt that is used for LUT Data when read in
 *   implicit VR, which may be US, SS or OW. DCMTK always treats EVR_lt like OW.
 *
 * Revision 1.21  2003/06/12 13:31:46  joergr
 * Fixed inconsistent API documentation reported by Doxygen.
 *
 * Revision 1.20  2003/03/21 13:06:46  meichel
 * Minor code purifications for warnings reported by MSVC in Level 4
 *
 * Revision 1.19  2002/12/06 12:20:19  joergr
 * Added support for new value representation Other Float String (OF).
 *
 * Revision 1.18  2002/11/27 12:07:24  meichel
 * Adapted module dcmdata to use of new header file ofstdinc.h
 *
 * Revision 1.17  2001/06/01 15:48:47  meichel
 * Updated copyright header
 *
 * Revision 1.16  2000/04/14 15:42:56  meichel
 * Global VR generation flags are now derived from OFGlobal and, thus,
 *   safe for use in multi-thread applications.
 *
 * Revision 1.15  2000/03/08 16:26:21  meichel
 * Updated copyright header.
 *
 * Revision 1.14  2000/02/29 11:48:38  meichel
 * Removed support for VS value representation. This was proposed in CP 101
 *   but never became part of the standard.
 *
 * Revision 1.13  2000/02/23 15:11:42  meichel
 * Corrected macro for Borland C++ Builder 4 workaround.
 *
 * Revision 1.12  2000/02/01 10:12:03  meichel
 * Avoiding to include <stdlib.h> as extern "C" on Borland C++ Builder 4,
 *   workaround for bug in compiler header files.
 *
 * Revision 1.11  1999/06/10 10:44:51  meichel
 * Replaced some #if statements by more robust #ifdef
 *
 * Revision 1.10  1999/03/31 09:24:54  meichel
 * Updated copyright header in module dcmdata
 *
 *
 */

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