JpegSampleValue.h
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/*
* 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_JPEGSAMPLE_H
#define SH_JPEGSAMPLE_H
#include "SampleValue.h"
class JpegSampleValue : public SampleValue {
public:
JpegSampleValue (int c) ;
SampleValue* getNearestTargetSampleValue (EmbValue t) const ;
UWORD32 calcDistance (const SampleValue *s) const ;
std::string getName (void) const ;
SWORD16 getDctCoeff (void) const
{ return DctCoeff ; } ;
static EmbValue calcEValue (SWORD16 dctc)
{ return (((dctc >= 0) ? dctc : -dctc) % 2) ; } ;
private:
SWORD16 DctCoeff ;
} ;
#endif // ndef SH_JPEGSAMPLE_H
JpegSampleValue::JpegSampleValue
JpegSampleValue(int c)
Definition: JpegSampleValue.cc:27
JpegSampleValue::DctCoeff
SWORD16 DctCoeff
Definition: JpegSampleValue.h:38
JpegSampleValue::calcDistance
UWORD32 calcDistance(const SampleValue *s) const
Definition: JpegSampleValue.cc:82
JpegSampleValue::getDctCoeff
SWORD16 getDctCoeff(void) const
Definition: JpegSampleValue.h:34
SWORD16
short SWORD16
Definition: common.h:49
SampleValue
the value of a sample in a CvrStgFile
Definition: SampleValue.h:61
JpegSampleValue
Definition: JpegSampleValue.h:26
UWORD32
unsigned long UWORD32
Definition: common.h:45
JpegSampleValue::getNearestTargetSampleValue
SampleValue * getNearestTargetSampleValue(EmbValue t) const
Definition: JpegSampleValue.cc:34
SampleValue.h
EmbValue
BYTE EmbValue
Definition: common.h:66
JpegSampleValue::calcEValue
static EmbValue calcEValue(SWORD16 dctc)
Definition: JpegSampleValue.h:37
JpegSampleValue::getName
std::string getName(void) const
Definition: JpegSampleValue.cc:93