streamclone.h

00001 /*
00002  * libopenraw - streamclone.h
00003  *
00004  * Copyright (C) 2006 Hubert Figuière
00005  *
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * This library is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with this library; if not, write to the Free Software
00018  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00019  */
00020 
00021 
00022 #ifndef __IO_STREAMCLONE_H__
00023 #define __IO_STREAMCLONE_H__
00024 
00025 #include <sys/types.h>
00026 #include <unistd.h>
00027 
00028 #include "stream.h"
00029 
00030 namespace OpenRaw {
00031     namespace IO {
00032 
00035         class StreamClone
00036             : public Stream
00037         {
00038         public:
00039             StreamClone(Stream *clone, off_t offset);
00040             virtual ~StreamClone();
00041             
00042             virtual Error open();
00043             virtual int close();
00044             virtual int seek(off_t offset, int whence);
00045             virtual int read(void *buf, size_t count);
00046             virtual off_t filesize();
00047 
00048 
00049         private:
00051             StreamClone(const StreamClone& f);
00053             StreamClone & operator=(const StreamClone&);
00054 
00055             Stream *m_cloned;
00056             off_t m_offset;
00057         };
00058 
00059     }
00060 }
00061 
00062 #endif

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