dcmdata/include/dcmtk/dcmdata/dcostrmb.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:  Marco Eichelberg
00017  *
00018  *  Purpose: DcmOutputBufferStream and related classes,
00019  *    implements output to blocks of memory as needed in the dcmnet module.
00020  *
00021  *  Last Update:      $Author: joergr $
00022  *  Update Date:      $Date: 2010-10-14 13:15:41 $
00023  *  CVS/RCS Revision: $Revision: 1.5 $
00024  *  Status:           $State: Exp $
00025  *
00026  *  CVS/RCS Log at end of file
00027  *
00028  */
00029 
00030 #ifndef DCOSTRMB_H
00031 #define DCOSTRMB_H
00032 
00033 #include "dcmtk/config/osconfig.h"
00034 #include "dcmtk/dcmdata/dcostrma.h"
00035 
00039 class DcmBufferConsumer: public DcmConsumer
00040 {
00041 public:
00042 
00048   DcmBufferConsumer(void *buf, offile_off_t bufLen);
00049 
00051   virtual ~DcmBufferConsumer();
00052 
00057   virtual OFBool good() const;
00058 
00063   virtual OFCondition status() const;
00064 
00070   virtual OFBool isFlushed() const;
00071 
00079   virtual offile_off_t avail() const;
00080 
00086   virtual offile_off_t write(const void *buf, offile_off_t buflen);
00087 
00093   virtual void flush();
00094 
00102   virtual void flushBuffer(void *& buffer, offile_off_t& length);
00103 
00104 private:
00105 
00107   DcmBufferConsumer(const DcmBufferConsumer&);
00108 
00110   DcmBufferConsumer& operator=(const DcmBufferConsumer&);
00111 
00113   unsigned char *buffer_;
00114 
00116   offile_off_t bufSize_;
00117 
00119   offile_off_t filled_;
00120 
00122   OFCondition status_;
00123 };
00124 
00125 
00129 class DcmOutputBufferStream: public DcmOutputStream
00130 {
00131 public:
00137   DcmOutputBufferStream(void *buf, offile_off_t bufLen);
00138 
00140   virtual ~DcmOutputBufferStream();
00141 
00149   virtual void flushBuffer(void *& buffer, offile_off_t& length);
00150 
00151 private:
00152 
00154   DcmOutputBufferStream(const DcmOutputBufferStream&);
00155 
00157   DcmOutputBufferStream& operator=(const DcmOutputBufferStream&);
00158 
00160   DcmBufferConsumer consumer_;
00161 
00162 };
00163 
00164 
00165 #endif
00166 
00167 /*
00168  * CVS/RCS Log:
00169  * $Log: dcostrmb.h,v $
00170  * Revision 1.5  2010-10-14 13:15:41  joergr
00171  * Updated copyright header. Added reference to COPYRIGHT file.
00172  *
00173  * Revision 1.4  2009-11-04 09:58:07  uli
00174  * Switched to logging mechanism provided by the "new" oflog module
00175  *
00176  * Revision 1.3  2007-02-19 16:06:09  meichel
00177  * Class DcmOutputStream and related classes are now safe for use with
00178  *   large files (2 GBytes or more) if supported by compiler and operating system.
00179  *
00180  * Revision 1.2  2005/12/08 16:28:25  meichel
00181  * Changed include path schema for all DCMTK header files
00182  *
00183  * Revision 1.1  2002/08/27 16:55:36  meichel
00184  * Initial release of new DICOM I/O stream classes that add support for stream
00185  *   compression (deflated little endian explicit VR transfer syntax)
00186  *
00187  *
00188  */


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