1 /*=========================================================================
4 Module: $RCSfile: gdcmBinEntry.cxx,v $
6 Date: $Date: 2005/02/02 10:02:16 $
7 Version: $Revision: 1.61 $
9 Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
10 l'Image). All rights reserved. See Doc/License.txt or
11 http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
13 This software is distributed WITHOUT ANY WARRANTY; without even
14 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 PURPOSE. See the above copyright notices for more information.
17 =========================================================================*/
19 #include "gdcmBinEntry.h"
20 #include "gdcmContentEntry.h"
22 #include "gdcmDebug.h"
26 #include <iostream> // for std::ios_base, since <ios> does not exist on gcc/Solaris
30 //-----------------------------------------------------------------------------
31 // Constructor / Destructor
33 * \brief Constructor from a given BinEntry
35 BinEntry::BinEntry(DictEntry *e)
43 * \brief Constructor from a given BinEntry
44 * @param e Pointer to existing Doc entry
46 BinEntry::BinEntry(DocEntry *e)
47 : ContentEntry(e->GetDictEntry())
51 BinArea = 0; // let's be carefull !
56 * \brief Canonical destructor.
60 if (BinArea && SelfArea)
63 BinArea = 0; // let's be carefull !
67 //-----------------------------------------------------------------------------
70 * \brief canonical Writer
71 * @param fp already open file pointer
72 * @param filetype type of the file (ACR, ImplicitVR, ExplicitVR, ...)
74 void BinEntry::WriteContent(std::ofstream *fp, FileType filetype)
76 #define BUFFER_SIZE 4096
77 DocEntry::WriteContent(fp, filetype);
78 void* binArea = GetBinArea();
79 int lgr = GetLength();
80 if (binArea) // the binArea was *actually* loaded
84 // Probabely, the same operation will have to be done when we want
85 // to write image with Big Endian Transfert Syntax,
86 // and we are working on Little Endian Processor
88 #ifdef GDCM_WORDS_BIGENDIAN
89 // Be carefull with *any* 16 bits words 'binEntries !'
90 // if ( GetVR() == "OW") // to be used later
92 // TODO FIXME Right now, we only care of Pixels element
94 // 8 Bits Pixels *are* OB, 16 Bits Pixels *are* OW
95 // -value forced while Reading process-
96 if (GetGroup() == 0x7fe0 && GetVR() == "OW")
98 uint16_t *currPosition = (uint16_t *)binArea;
100 // TODO FIXME : Maybe we should allocate somewhere a static buffer,
101 // in order not to have to alloc/delete for almost every BinEntry ...
102 uint16_t *buffer = new uint16_t[BUFFER_SIZE];
104 // how many BUFFER_SIZE long pieces in binArea ?
105 int nbPieces = lgr/BUFFER_SIZE/2; //(16 bits = 2 Bytes)
106 uint16_t *binArea16 = (uint16_t*)binArea;
107 for (int j=0;j<nbPieces;j++)
109 for (int i = 0; i < BUFFER_SIZE/2; i++)
111 buffer[i] = (binArea16[i] >> 8) | (binArea16[i] << 8);
113 fp->write ( (char*)currPosition, BUFFER_SIZE );
114 currPosition += BUFFER_SIZE/2;
116 int remainingSize = lgr%BUFFER_SIZE;
117 if ( remainingSize != 0)
119 fp->write ( (char*)currPosition, remainingSize );
125 // For any other VR, BinEntry is re-written as-is
126 fp->write ( (char*)binArea, lgr );
129 fp->write ( (char*)binArea, lgr ); // Elem value
130 #endif //GDCM_WORDS_BIGENDIAN
135 // nothing was loaded, but we need to skip space on disc
136 fp->seekp(lgr, std::ios::cur);
141 * \brief Sets the value (non string) of the current Dicom Header Entry
143 void BinEntry::SetBinArea( uint8_t *area, bool self )
145 if (BinArea && SelfArea)
152 //-----------------------------------------------------------------------------
155 //-----------------------------------------------------------------------------
158 //-----------------------------------------------------------------------------
161 * \brief Prints a BinEntry (Dicom entry)
162 * @param os ostream we want to print in
163 * @param indent Indentation string to be prepended during printing
165 void BinEntry::Print(std::ostream &os, std::string const & )
169 std::ostringstream s;
170 void* binArea = GetBinArea();
173 s << " [" << GetValue()
174 << "; length = " << GetLength() << "]";
178 if ( GetLength() == 0 )
184 s << " [" <<GetValue() << "]";
190 //-----------------------------------------------------------------------------
191 } // end namespace gdcm