dcvrobow.h

转化为DIB位图再显示出来的dicom文件C++代码

/*
 *
 *  Copyright (C) 1994-2005, OFFIS
 *
 *  This software and supporting documentation were developed by
 *
 *    Kuratorium OFFIS e.V.
 *    Healthcare Information and Communication Systems
 *    Escherweg 2
 *    D-26121 Oldenburg, Germany
 *
 *  THIS SOFTWARE IS MADE AVAILABLE,  AS IS,  AND OFFIS MAKES NO  WARRANTY
 *  REGARDING  THE  SOFTWARE,  ITS  PERFORMANCE,  ITS  MERCHANTABILITY  OR
 *  FITNESS FOR ANY PARTICULAR USE, FREEDOM FROM ANY COMPUTER DISEASES  OR
 *  ITS CONFORMITY TO ANY SPECIFICATION. THE ENTIRE RISK AS TO QUALITY AND
 *  PERFORMANCE OF THE SOFTWARE IS WITH THE USER.
 *
 *  Module:  dcmdata
 *
 *  Author:  Gerd Ehlers
 *
 *  Purpose: Interface of class DcmOtherByteOtherWord
 *
 *  Last Update:      $Author: meichel $
 *  Update Date:      $Date: 2005/12/08 16:29:03 $
 *  Source File:      $Source: /share/dicom/cvs-depot/dcmtk/dcmdata/include/dcmtk/dcmdata/dcvrobow.h,v $
 *  CVS/RCS Revision: $Revision: 1.26 $
 *  Status:           $State: Exp $
 *
 *  CVS/RCS Log at end of file
 *
 */


#ifndef DCVROBOW_H
#define DCVROBOW_H

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


/** a class representing the DICOM value representations 'Other Byte String' (OB)
 *  and 'Other Word String' (OW)
 */
class DcmOtherByteOtherWord
  : public DcmElement
{

 public:

    /** constructor.
     *  Create new element from given tag and length.
     *  @param tag DICOM tag for the new element
     *  @param len value length for the new element
     */
    DcmOtherByteOtherWord(const DcmTag &tag,
                          const Uint32 len = 0);

    /** copy constructor
     *  @param old element to be copied
     */
    DcmOtherByteOtherWord(const DcmOtherByteOtherWord &old);

    /** destructor
     */
    virtual ~DcmOtherByteOtherWord();

    /** assignment operator
     *  @param obj element to be assigned/copied
     *  @return reference to this object
     */
    DcmOtherByteOtherWord &operator=(const DcmOtherByteOtherWord &obj);

    /** clone method
     *  @return deep copy of this object
     */
    virtual DcmObject *clone() const
    {
      return new DcmOtherByteOtherWord(*this);
    }

    /** get element type identifier
     *  @return type identifier of this class
     */
    virtual DcmEVR ident() const;

    /** get value multiplicity
     *  @return always returns 1 (according to the DICOM standard)
     */
    virtual unsigned long getVM();

    /** set/change the current value representation
     *  @param vr new value representation to be set.  All VRs except for OW (Other
     *    Word String) are treated as 8 bit data (OB).  This is particularily useful
     *    for unknown (UN) or unsupported VRs.
     *  @return status status, EC_Normal if successful, an error code otherwise
     */
    virtual OFCondition setVR(DcmEVR vr);

    /** print the current value to a stream.
     *  The output format of the binary value is a backslash separated sequence of
     *  2- or 4-digit hex numbers, e.g. "00\01\dd" or "0000\7777\aaaa\ffff".
     *  @param out output stream
     *  @param flags optional flag used to customize the output (see DCMTypes::PF_xxx)
     *  @param level current level of nested items. Used for indentation.
     *  @param pixelFileName not used
     *  @param pixelCounter not used
     */
    virtual void print(ostream &out,
                       const size_t flags = 0,
                       const int level = 0,
                       const char *pixelFileName = NULL,
                       size_t *pixelCounter = NULL);

    /** check whether the transfer syntax can be changed as specified
     *  @param newXfer transfer syntax to be checked
     *  @param oldXfer not used
     *  @return OFTrue if transfer syntax can be changed to the new one, OFFalse otherwise
     */
    virtual OFBool canWriteXfer(const E_TransferSyntax newXfer,
                                const E_TransferSyntax oldXfer);

    /** write object to a stream
     *  @param outStream DICOM output stream
     *  @param oxfer output transfer syntax
     *  @param enctype encoding types (undefined or explicit length)
     *  @return status, EC_Normal if successful, an error code otherwise
     */
    virtual OFCondition write(DcmOutputStream &outStream,
                              const E_TransferSyntax oxfer,
                              const E_EncodingType enctype = EET_UndefinedLength);

    /** write object in XML format to a stream
     *  @param out output stream to which the XML document is written
     *  @param flags optional flag used to customize the output (see DCMTypes::XF_xxx)
     *  @return status, EC_Normal if successful, an error code otherwise
     */
    virtual OFCondition writeXML(ostream &out,
                                 const size_t flags = 0);

    /** special write method for creation of digital signatures
     *  @param outStream DICOM output stream
     *  @param oxfer output transfer syntax
     *  @param enctype encoding types (undefined or explicit length)
     *  @return status, EC_Normal if successful, an error code otherwise
     */
    virtual OFCondition writeSignatureFormat(DcmOutputStream &outStream,
                                             const E_TransferSyntax oxfer,
                                             const E_EncodingType enctype = EET_UndefinedLength);

    /** get particular 8 bit value.
     *  This method is only applicable to non-OW data, e.g. OB.
     *  @param byteVal reference to result variable (cleared in case of error)
     *  @param pos index of the value to be retrieved (0..vm-1)
     *  @return status, EC_Normal if successful, an error code otherwise
     */
    virtual OFCondition getUint8(Uint8 &byteVal,
                                 const unsigned long pos = 0);

    /** get particular 16 bit value.
     *  This method is only applicable to OW data.
     *  @param wordVal reference to result variable (cleared in case of error)
     *  @param pos index of the value to be retrieved (0..vm-1)
     *  @return status status, EC_Normal if successful, an error code otherwise
     */
    virtual OFCondition getUint16(Uint16 &wordVal,
                                  const unsigned long pos = 0);

    /** get reference to stored 8 bit data.
     *  This method is only applicable to non-OW data, e.g. OB.
     *  @param byteVals reference to result variable
     *  @return status status, EC_Normal if successful, an error code otherwise
     */
    virtual OFCondition getUint8Array(Uint8 *&byteVals);

    /** get reference to stored 16 bit data.
     *  This method is only applicable to OW data.
     *  @param wordVals reference to result variable
     *  @return status status, EC_Normal if successful, an error code otherwise
     */
    virtual OFCondition getUint16Array(Uint16 *&wordVals);

    /** get a particular value as a character string.
     *  The numeric value is converted to hex mode, i.e. an 8 bit value is
     *  represented by 2 characters (00..ff) and a 16 bit value by 4 characters
     *  (0000..ffff).
     *  @param stringVal variable in which the result value is stored
     *  @param pos index of the value in case of multi-valued elements (0..vm-1)
     *  @param normalize not used
     *  @return status, EC_Normal if successful, an error code otherwise
     */
    virtual OFCondition getOFString(OFString &stringVal,
                                    const unsigned long pos,