/*
 * steghide 0.5.1 - a steganography program
 * Copyright (C) 1999-2003 Stefan Hetzl <shetzl@chello.at>
 *
 * 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#ifndef SH_BMPSAMPLE_H
#define SH_BMPSAMPLE_H

#include "SampleValue.h"
#include "common.h"

/**
 * \class BmpSampleValue
 * \brief an (abstract) sample value in a bmp file
 **/
class BmpSampleValue : public SampleValue {
	public:
	BmpSampleValue (void) : SampleValue() {} ;

	virtual UWORD32 calcDistance (const SampleValue *s) const ;

	/**
	 * get the red color component
	 **/
	virtual unsigned char getRed (void) const = 0 ;
	
	/**
	 * get the green color component
	 **/
	virtual unsigned char getGreen (void) const = 0 ;
	
	/**
	 * get the blue color component
	 **/
	virtual unsigned char getBlue (void) const = 0 ;
} ;


#endif // ndef SH_BMPSAMPLE_H