CvrStgObject.h

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00001 /*
00002  * steghide 0.5.1 - a steganography program
00003  * Copyright (C) 1999-2003 Stefan Hetzl <shetzl@chello.at>
00004  *
00005  * This program is free software; you can redistribute it and/or
00006  * modify it under the terms of the GNU General Public License
00007  * as published by the Free Software Foundation; either version 2
00008  * of the License, or (at your option) any later version.
00009  *
00010  * This program is distributed in the hope that it will be useful,
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013  * GNU General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU General Public License
00016  * along with this program; if not, write to the Free Software
00017  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00018  *
00019  */
00020 
00021 #ifndef SH_CVRSTGOBJECT_H
00022 #define SH_CVRSTGOBJECT_H
00023 
00024 #include "common.h"
00025 
00026 class SampleValue ;
00027 
00040 class CvrStgObject {
00041         public:
00045         virtual unsigned long getNumSamples (void) const = 0 ;
00046 
00055         virtual SampleValue* getSampleValue (const SamplePos pos) const = 0 ;
00056 
00064         virtual void replaceSample (const SamplePos pos, const SampleValue* s) = 0 ;
00065 } ;
00066 
00067 #endif //ndef SH_CVRSTGOBJECT_H

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