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BmpPaletteSampleValue.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_BMPPALETTESAMPLEVALUE_H 00022 #define SH_BMPPALETTESAMPLEVALUE_H 00023 00024 #include "BmpSampleValue.h" 00025 #include "CvrStgFile.h" 00026 #include "ColorPalette.h" 00027 #include "common.h" 00028 00033 class BmpPaletteSampleValue : public BmpSampleValue { 00034 public: 00035 BmpPaletteSampleValue (BYTE i) ; 00036 00037 SampleValue* getNearestTargetSampleValue (EmbValue t) const ; 00038 std::string getName (void) const ; 00039 00040 BYTE getIndex (void) const { return Index ; } ; 00041 BYTE getRed (void) const { return (*Palette)[Index].Red ; } ; 00042 BYTE getGreen (void) const { return (*Palette)[Index].Green ; } ; 00043 BYTE getBlue (void) const { return (*Palette)[Index].Blue ; } ; 00044 00045 private: 00046 ColorPalette* Palette ; 00047 BYTE Index ; 00048 00049 EmbValue calcEValue (BYTE idx) const 00050 { return (idx % Globs.TheCvrStgFile->getEmbValueModulus()) ; } ; 00051 } ; 00052 00053 #endif // ndef SH_BMPPALETTESAMPLEVALUE_H

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