GFitsTableBitCol.hpp
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/***************************************************************************
* GFitsTableBitCol.hpp - FITS table bit column class *
* ----------------------------------------------------------------------- *
* copyright (C) 2008-2013 by Juergen Knoedlseder *
* ----------------------------------------------------------------------- *
* *
* This program is free software: you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* This program 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 General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
* *
***************************************************************************/
/**
* @file GFitsTableBitCol.hpp
* @brief FITS table bit column class interface definition
* @author Juergen Knoedlseder
*/
#ifndef GFITSTABLEBITCOL_HPP
#define GFITSTABLEBITCOL_HPP
/* __ Includes ___________________________________________________________ */
#include <string>
#include "GFitsTableCol.hpp"
/***********************************************************************//**
* @class GFitsTableBitCol
*
* @brief FITS table Bit column
*
* This class implements a FITS table Bit column. Bits are stored internally
* in an array of type char and is transferred to the file in junks of
* 8 Bits (using the CFITSIO type TBYTE).
***************************************************************************/
class GFitsTableBitCol : public GFitsTableCol {
public:
// Constructors and destructors
GFitsTableBitCol(void);
GFitsTableBitCol(const std::string& name, const int& length,
const int& size = 1);
GFitsTableBitCol(const GFitsTableBitCol& column);
virtual ~GFitsTableBitCol(void);
// Operators
GFitsTableBitCol& operator=(const GFitsTableBitCol& column);
bool& operator()(const int& row, const int& inx = 0);
const bool& operator()(const int& row, const int& inx = 0) const;
// Implemented virtual methods
virtual void clear(void);
virtual GFitsTableBitCol* clone(void) const;
virtual std::string string(const int& row, const int& col = 0) const;
virtual double real(const int& row, const int& col = 0) const;
virtual int integer(const int& row, const int& col = 0) const;
virtual void insert(const int& row, const int& nrows);
virtual void remove(const int& row, const int& nrows);
virtual bool is_loaded(void) const;
// Other methods
unsigned char* data(void);
unsigned char* nulval(void);
void nulval(const unsigned char* value);
private:
// Private methods
void init_members(void);
void copy_members(const GFitsTableBitCol& column);
void free_members(void);
void alloc_nulval(const unsigned char* value);
void get_bit(const int& row, const int& inx);
void set_pending(void);
// Implemented virtual base class methods
virtual void alloc_data(void);
virtual void init_data(void);
virtual void fetch_data(void) const;
virtual void resize_data(const int& index, const int& number);
virtual void release_data(void);
virtual void* ptr_data(const int& index = 0);
virtual void* ptr_nulval(void);
virtual std::string ascii_format(void) const;
// Overloaded virtual methods
virtual void load_column(void);
virtual void save_column(void);
// Private data area
int m_bits; //!< Total number of Bits in column
int m_bytes_per_row; //!< Number of Bytes per row
int m_bits_per_row; //!< Number of Bits per row
unsigned char* m_data; //!< Data area
unsigned char* m_nulval; //!< NULL value
// Bit access data area
bool m_bit_pending; //!< Bit value has to be written back
bool m_bit_value; //!< Actual bit to be accessed
int m_bit_byte; //!< Row of actual bit to be accessed
int m_bit_mask; //!< Index of actual bit to be accessed
};
/***********************************************************************//**
* @brief Checks if column has been loaded
*
* @return True if column has been loaded, false otherwise
***************************************************************************/
inline
bool GFitsTableBitCol::is_loaded(void) const
{
return (m_data != NULL);
}
/***********************************************************************//**
* @brief Returns pointer to column data
*
* @return Pointer to column data.
***************************************************************************/
inline
unsigned char* GFitsTableBitCol::data(void)
{
return m_data;
}
/***********************************************************************//**
* @brief Returns pointer to nul value
*
* @return Pointer to nul value.
***************************************************************************/
inline
unsigned char* GFitsTableBitCol::nulval(void)
{
return m_nulval;
}
/***********************************************************************//**
* @brief Returns void pointer to column data
*
* @return Void pointer to column data.
***************************************************************************/
inline
void* GFitsTableBitCol::ptr_data(const int& index)
{
return (m_data+index);
}
/***********************************************************************//**
* @brief Returns void pointer to nul value
*
* @return Void pointer to nul value.
***************************************************************************/
inline
void* GFitsTableBitCol::ptr_nulval(void)
{
return m_nulval;
}
#endif /* GFITSTABLEBITCOL_HPP */