steghide  0.5.1
BmpSampleValue.h
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1 /*
2  * steghide 0.5.1 - a steganography program
3  * Copyright (C) 1999-2003 Stefan Hetzl <shetzl@chello.at>
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU General Public License
7  * as published by the Free Software Foundation; either version 2
8  * of the License, or (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18  *
19  */
20 
21 #ifndef SH_BMPSAMPLE_H
22 #define SH_BMPSAMPLE_H
23 
24 #include "SampleValue.h"
25 #include "common.h"
26 
31 class BmpSampleValue : public SampleValue {
32  public:
33  BmpSampleValue (void) : SampleValue() {} ;
34 
35  virtual UWORD32 calcDistance (const SampleValue *s) const ;
36 
40  virtual unsigned char getRed (void) const = 0 ;
41 
45  virtual unsigned char getGreen (void) const = 0 ;
46 
50  virtual unsigned char getBlue (void) const = 0 ;
51 } ;
52 
53 
54 #endif // ndef SH_BMPSAMPLE_H
virtual unsigned char getRed(void) const =0
an (abstract) sample value in a bmp file
Definition: BmpSampleValue.h:31
virtual UWORD32 calcDistance(const SampleValue *s) const
Definition: BmpSampleValue.cc:24
the value of a sample in a CvrStgFile
Definition: SampleValue.h:61
BmpSampleValue(void)
Definition: BmpSampleValue.h:33
virtual unsigned char getGreen(void) const =0
unsigned long UWORD32
Definition: common.h:45
virtual unsigned char getBlue(void) const =0