/usr/include/casacore/casa/IO/ConversionIO.h is in casacore-dev 2.2.0-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 | //# ConversionIO.h: Class for IO in a converted format
//# Copyright (C) 1996,1999,2001
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//#
//# $Id$
#ifndef CASA_CONVERSIONIO_H
#define CASA_CONVERSIONIO_H
#include <casacore/casa/aips.h>
#include <casacore/casa/IO/TypeIO.h>
#include <casacore/casa/Utilities/CountedPtr.h>
//# The following should be a declaration. But our Complex & DComplex classes
//# are a typedef hence this does not work. Replace the following with
//# forward declarations when Complex and DComplex are no longer typedefs.
#include <casacore/casa/BasicSL/Complex.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
class DataConversion;
class ByteIO;
class String;
// <summary>Class for IO in a converted format.</summary>
// <use visibility=export>
// <reviewed reviewer="Friso Olnon" date="1996/11/06" tests="tTypeIO" demos="">
// </reviewed>
// <prerequisite>
// <li> <linkto class=ByteIO>ByteIO</linkto> class and derived classes
// <li> <linkto class=TypeIO>TypeIO</linkto>class
// <li> <linkto class=DataConversion>DataConversion</linkto>
// </prerequisite>
// <synopsis>
// ConversionIO is a specialization of class TypeIO to store
// data in a converted format.
// <p>
// The class converts the data to/from external data and reads/writes
// them from/into the ByteIO object given at construction time.
// Conversion is only done when really needed. If not needed, the
// data is directly read or written.
// <p>
// This class is useful when data can be stored in one of multiple formats.
// Only at construction time the correct <linkto class=DataConversion>
// DataConversion</linkto> class has to be given. Thereafter polymorphism
// ensures that the correct conversion is done when reading or writing.
// </synopsis>
class ConversionIO: public TypeIO
{
public:
// Constructor.
// The read/write functions will use the given <src>ByteIO</src> object
// as the data store and the given <src>DataConversion</src> object
// as the conversion engine.
// <p>
// The read and write functions use an intermediate buffer to hold the data
// in canonical format. For small arrays it uses a fixed buffer with
// length <src>bufferLength</src>. For arrays not fitting in this buffer,
// it uses a temporary buffer allocated on the heap.
// <p>
// If takeOver is True this this class will be responsible for deleting the
// DataConversion and ByteIO pointers. Otherwise it is the callers
// responsibility.
ConversionIO (DataConversion* dataConversion, ByteIO* byteIO,
uInt bufferLength=4096, Bool takeOver=False);
// The copy constructor uses reference semantics
ConversionIO (const ConversionIO& conversionIO);
// The assignment operator uses reference semantics
ConversionIO& operator= (const ConversionIO& conversionIO);
// Destructor, deletes allocated memory.
~ConversionIO();
// Convert the values and write them to the ByteIO object.
// Bool, complex and String values are handled by the base class.
// <group>
virtual size_t write (size_t nvalues, const Bool* value);
virtual size_t write (size_t nvalues, const Char* data);
virtual size_t write (size_t nvalues, const uChar* data);
virtual size_t write (size_t nvalues, const Short* data);
virtual size_t write (size_t nvalues, const uShort* data);
virtual size_t write (size_t nvalues, const Int* data);
virtual size_t write (size_t nvalues, const uInt* data);
virtual size_t write (size_t nvalues, const Int64* data);
virtual size_t write (size_t nvalues, const uInt64* data);
virtual size_t write (size_t nvalues, const Float* data);
virtual size_t write (size_t nvalues, const Double* data);
virtual size_t write (size_t nvalues, const Complex* value);
virtual size_t write (size_t nvalues, const DComplex* value);
virtual size_t write (size_t nvalues, const String* value);
// </group>
// Read the values from the ByteIO object and convert them.
// Bool, complex and String values are handled by the base class.
// <group>
virtual size_t read (size_t nvalues, Bool* value);
virtual size_t read (size_t nvalues, Char* data);
virtual size_t read (size_t nvalues, uChar* data);
virtual size_t read (size_t nvalues, Short* data);
virtual size_t read (size_t nvalues, uShort* data);
virtual size_t read (size_t nvalues, Int* data);
virtual size_t read (size_t nvalues, uInt* data);
virtual size_t read (size_t nvalues, Int64* data);
virtual size_t read (size_t nvalues, uInt64* data);
virtual size_t read (size_t nvalues, Float* data);
virtual size_t read (size_t nvalues, Double* data);
virtual size_t read (size_t nvalues, Complex* value);
virtual size_t read (size_t nvalues, DComplex* value);
virtual size_t read (size_t nvalues, String* value);
// </group>
private:
// Initialize the <src>itsSize</src> and <src>itsCopy</src> variables.
void init();
//# The data.
CountedPtr<DataConversion> itsConversion;
uInt itsSizeChar;
uInt itsSizeuChar;
uInt itsSizeShort;
uInt itsSizeuShort;
uInt itsSizeInt;
uInt itsSizeuInt;
uInt itsSizeInt64;
uInt itsSizeuInt64;
uInt itsSizeFloat;
uInt itsSizeDouble;
Bool itsCopyChar;
Bool itsCopyuChar;
Bool itsCopyShort;
Bool itsCopyuShort;
Bool itsCopyInt;
Bool itsCopyuInt;
Bool itsCopyInt64;
Bool itsCopyuInt64;
Bool itsCopyFloat;
Bool itsCopyDouble;
//# The buffer
char* itsBuffer;
uInt itsBufferLength;
};
} //# NAMESPACE CASACORE - END
#endif
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