WavPCMSampleValue.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_WAVSAMPLE_H
00022 #define SH_WAVSAMPLE_H
00023 
00024 #include <functional>
00025 
00026 #include "SampleValue.h"
00027 
00028 class CvrStgFile ;
00029 
00030 class WavPCMSampleValue : public SampleValue {
00031         public:
00032         WavPCMSampleValue (int v) ;
00033 
00034         SampleValue* getNearestTargetSampleValue (EmbValue t) const ;
00035         UWORD32 calcDistance (const SampleValue *s) const ;
00036         std::string getName (void) const ;
00037 
00038         int getValue (void) const
00039                 { return Value ; } ;
00040 
00041         private:
00042         int Value ;
00043         int MaxValue ;
00044         int MinValue ;
00045 
00046         EmbValue calcEValue (int v) const
00047                 { return (v & 1) ; }
00048 } ;
00049 
00050 class WavPCMSmaller : public std::binary_function<WavPCMSampleValue*,WavPCMSampleValue*,bool> {
00051         public:
00052         bool operator() (const WavPCMSampleValue *v, const WavPCMSampleValue *w) { return v->getValue() < w->getValue() ; } ;
00053 } ;
00054 
00055 #endif // ndef SH_WAVSAMPLE_H

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