steghide 0.5.1
EdgeIterator.h
Go to the documentation of this file.
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_EDGEITERATOR_H
22#define SH_EDGEITERATOR_H
23
24#include <list>
25
26#include "Edge.h"
27class Graph ;
28#include "SampleOccurence.h"
29class SampleValue ;
30class Vertex ;
31
52 public:
54 SAMPLEOCCURENCE, // incrementing increments to next sample occurence (possibly of the same sample value) thus using every edge of the source vertex
55 SAMPLEVALUE // incrementing increments to the next sample value thus not using all edges in general
56 } ;
57
61 EdgeIterator (void) ;
62
67
71 EdgeIterator (const EdgeIterator& eit) ;
72
73 ~EdgeIterator (void) ;
74
79 const Edge* operator* (void) const
80 { return ((Finished) ? NULL : &CurrentEdge) ; }
81
85 void operator++ (void) ;
86
92
97
101 bool isFinished (void) const
102 { return Finished ; } ;
103
109 { return SampleOccurenceIt->getVertex()->getLabel() ; } ;
110
112 { return MaxNumEdges ; } ;
113
114 static void setMaxNumEdges (UWORD32 mne)
115 { MaxNumEdges = mne ; } ;
116
117 void print (unsigned short spc = 0) const ;
118
119 private:
122
125
127 unsigned long* SVALIndices ;
128
131
134
136 bool Finished ;
137
142 std::list<SampleOccurence>::const_iterator SampleOccurenceIt ;
143
150 void findNextEdge (void) ;
151
156} ;
157
158#endif // ndef SH_EDGEITERATOR_H
allows an iteration trough all edges of a vertex
Definition EdgeIterator.h:51
const Edge * operator*(void) const
Definition EdgeIterator.h:79
bool Finished
is true iff there are no more edges for this source vertex
Definition EdgeIterator.h:136
static void setMaxNumEdges(UWORD32 mne)
Definition EdgeIterator.h:114
unsigned long * SVALIndices
contains (for every sample value) an index to the current opposite neighbour
Definition EdgeIterator.h:127
~EdgeIterator(void)
Definition EdgeIterator.cc:52
ITERATIONMODE
Definition EdgeIterator.h:53
@ SAMPLEVALUE
Definition EdgeIterator.h:55
@ SAMPLEOCCURENCE
Definition EdgeIterator.h:54
void print(unsigned short spc=0) const
void operator++(void)
Definition EdgeIterator.cc:57
bool isFinished(void) const
Definition EdgeIterator.h:101
bool isDestSampleValueOK(const SampleValue *sv)
Edge CurrentEdge
the current edge (is returned by operator*)
Definition EdgeIterator.h:121
static UWORD32 getMaxNumEdges(void)
Definition EdgeIterator.h:111
static UWORD32 MaxNumEdges
the maximum number of edges the EdgeIterator should iterate through
Definition EdgeIterator.h:130
UWORD32 EdgeIndex
the index/number of the edge that is currently returned by operator*
Definition EdgeIterator.h:133
EdgeIterator(void)
Definition EdgeIterator.cc:28
void reset(Vertex *v, ITERATIONMODE m=SAMPLEOCCURENCE)
Definition EdgeIterator.cc:121
std::list< SampleOccurence >::const_iterator SampleOccurenceIt
Definition EdgeIterator.h:142
ITERATIONMODE Mode
mode of iteration
Definition EdgeIterator.h:124
void findNextEdge(void)
Definition EdgeIterator.cc:127
VertexLabel getPartnerVertexLabel(void) const
Definition EdgeIterator.h:108
Definition Edge.h:28
a graph constructed from a cover file and a message to be embedded
Definition Graph.h:51
the value of a sample in a CvrStgFile
Definition SampleValue.h:61
a vertex in a graph
Definition Vertex.h:43
unsigned long UWORD32
Definition common.h:45
UWORD32 VertexLabel
Definition common.h:68