dcmdata/include/dcmtk/dcmdata/dcswap.h

00001 /*
00002  *
00003  *  Copyright (C) 1994-2010, OFFIS e.V.
00004  *  All rights reserved.  See COPYRIGHT file for details.
00005  *
00006  *  This software and supporting documentation were developed by
00007  *
00008  *    OFFIS e.V.
00009  *    R&D Division Health
00010  *    Escherweg 2
00011  *    D-26121 Oldenburg, Germany
00012  *
00013  *
00014  *  Module:  dcmdata
00015  *
00016  *  Author:  Andreas Barth
00017  *
00018  *  Purpose: byte order functions
00019  *
00020  *  Last Update:      $Author: joergr $
00021  *  Update Date:      $Date: 2010-10-14 13:15:42 $
00022  *  CVS/RCS Revision: $Revision: 1.19 $
00023  *  Status:           $State: Exp $
00024  *
00025  *  CVS/RCS Log at end of file
00026  *
00027  */
00028 
00029 #ifndef DCSWAP_H
00030 #define DCSWAP_H
00031 
00032 #include "dcmtk/config/osconfig.h"    /* make sure OS specific configuration is included first */
00033 #include "dcmtk/dcmdata/dcerror.h"
00034 #include "dcmtk/dcmdata/dcxfer.h"     /* for E_ByteOrder */
00035 
00044 OFCondition swapIfNecessary(
00045   const E_ByteOrder newByteOrder, 
00046   const E_ByteOrder oldByteOrder,
00047   void * value, 
00048   const Uint32 byteLength,
00049   const size_t valWidth);
00050 
00056 void swapBytes(
00057   void * value, 
00058   const Uint32 byteLength, 
00059   const size_t valWidth);
00060 
00065 Uint16 swapShort(const Uint16 toSwap);
00066 
00070 inline void swap2Bytes(Uint8 * toSwap)
00071 // swaps [byte0][byte1] to [byte1][byte0]
00072 {
00073     Uint8 tmp = toSwap[0];
00074     toSwap[0] = toSwap[1];
00075     toSwap[1] = tmp;
00076 }
00077 
00081 inline void swap4Bytes(Uint8 * toSwap)
00082 // swaps [byte0][byte1][byte2][byte3] to [byte3][byte2][byte1][byte0]
00083 {
00084     Uint8 tmp = toSwap[0];
00085     toSwap[0] = toSwap[3];
00086     toSwap[3] = tmp;
00087     tmp = toSwap[1];
00088     toSwap[1] = toSwap[2];
00089     toSwap[2] = tmp;
00090 }
00091 
00092 #endif // DCSWAP_H
00093 
00094 /*
00095  * CVS/RCS Log:
00096  * $Log: dcswap.h,v $
00097  * Revision 1.19  2010-10-14 13:15:42  joergr
00098  * Updated copyright header. Added reference to COPYRIGHT file.
00099  *
00100  * Revision 1.18  2010-03-01 09:08:44  uli
00101  * Removed some unnecessary include directives in the headers.
00102  *
00103  * Revision 1.17  2009-11-04 09:58:07  uli
00104  * Switched to logging mechanism provided by the "new" oflog module
00105  *
00106  * Revision 1.16  2007-11-29 14:30:35  meichel
00107  * Updated doxygen API documentation
00108  *
00109  * Revision 1.15  2005/12/08 16:28:43  meichel
00110  * Changed include path schema for all DCMTK header files
00111  *
00112  * Revision 1.14  2002/11/27 12:07:23  meichel
00113  * Adapted module dcmdata to use of new header file ofstdinc.h
00114  *
00115  * Revision 1.13  2001/11/01 14:41:43  wilkens
00116  * Added lots of comments.
00117  *
00118  * Revision 1.12  2001/09/25 17:19:29  meichel
00119  * Adapted dcmdata to class OFCondition
00120  *
00121  * Revision 1.11  2001/06/01 15:48:44  meichel
00122  * Updated copyright header
00123  *
00124  * Revision 1.10  2000/03/08 16:26:18  meichel
00125  * Updated copyright header.
00126  *
00127  * Revision 1.9  2000/02/23 15:11:39  meichel
00128  * Corrected macro for Borland C++ Builder 4 workaround.
00129  *
00130  * Revision 1.8  2000/02/01 10:12:02  meichel
00131  * Avoiding to include <stdlib.h> as extern "C" on Borland C++ Builder 4,
00132  *   workaround for bug in compiler header files.
00133  *
00134  * Revision 1.7  1999/06/10 10:44:50  meichel
00135  * Replaced some #if statements by more robust #ifdef
00136  *
00137  * Revision 1.6  1999/03/31 09:24:48  meichel
00138  * Updated copyright header in module dcmdata
00139  *
00140  *
00141  */


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