steghide  0.5.1
BmpPaletteSampleValue.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_BMPPALETTESAMPLEVALUE_H
22 #define SH_BMPPALETTESAMPLEVALUE_H
23 
24 #include "BmpSampleValue.h"
25 #include "CvrStgFile.h"
26 #include "ColorPalette.h"
27 #include "common.h"
28 
34  public:
36 
38  std::string getName (void) const ;
39 
40  BYTE getIndex (void) const { return Index ; } ;
41  BYTE getRed (void) const { return (*Palette)[Index].Red ; } ;
42  BYTE getGreen (void) const { return (*Palette)[Index].Green ; } ;
43  BYTE getBlue (void) const { return (*Palette)[Index].Blue ; } ;
44 
45  private:
48 
49  EmbValue calcEValue (BYTE idx) const
50  { return (idx % Globs.TheCvrStgFile->getEmbValueModulus()) ; } ;
51 } ;
52 
53 #endif // ndef SH_BMPPALETTESAMPLEVALUE_H
a sample in a bmp palette (i.e. in a 1-,4- or 8-bit) file
Definition: BmpPaletteSampleValue.h:33
EmbValue getEmbValueModulus(void) const
Definition: CvrStgFile.h:130
Globals Globs
Definition: Embedder.cc:41
an (abstract) sample value in a bmp file
Definition: BmpSampleValue.h:31
the value of a sample in a CvrStgFile
Definition: SampleValue.h:61
ColorPalette * Palette
Definition: BmpPaletteSampleValue.h:43
BYTE Index
Definition: BmpPaletteSampleValue.h:47
a color palette
Definition: ColorPalette.h:36
unsigned char BYTE
Definition: common.h:47
BYTE getIndex(void) const
Definition: BmpPaletteSampleValue.h:40
EmbValue calcEValue(BYTE idx) const
Definition: BmpPaletteSampleValue.h:49
BmpPaletteSampleValue(BYTE i)
Definition: BmpPaletteSampleValue.cc:25
CvrStgFile * TheCvrStgFile
the cover-/stego- file that is operated on (set in CvrStgFile::CvrStgFile)
Definition: Globals.h:55
std::string getName(void) const
Definition: BmpPaletteSampleValue.cc:58
BYTE getGreen(void) const
Definition: BmpPaletteSampleValue.h:42
BYTE getBlue(void) const
Definition: BmpPaletteSampleValue.h:43
BYTE EmbValue
Definition: common.h:66
SampleValue * getNearestTargetSampleValue(EmbValue t) const
Definition: BmpPaletteSampleValue.cc:36
BYTE getRed(void) const
Definition: BmpPaletteSampleValue.h:41