/*
 *  PSX-Tools Bundle Pack
 *  Copyright (C) 2002-2003 Nicolas "Pixel" Noble
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/* $Id: cdreader.h,v 1.12 2004-11-27 21:47:53 pixel Exp $ */

#ifndef __CDREADER_H__
#define __CDREADER_H__

#include <sys/types.h>
#include <time.h>
#include <BString.h>
#include <Handle.h>
#include "cdabstract.h"

class cdreader : public Handle {
  public:
      cdreader(const String &) throw (GeneralException);
      cdreader(const cdreader &);
      virtual ~cdreader();
    virtual bool CanWrite() const;
    virtual bool CanRead() const;
    virtual bool CanSeek() const;
#if defined (_MSC_VER) || defined (__MINGW32__)
    virtual void close() throw (GeneralException);
#endif
    virtual ssize_t read(void *buf, size_t count) throw (GeneralException);                                                     
    virtual off_t seek(off_t, int = SEEK_SET) throw (GeneralException);
    virtual String GetName() const;
    virtual ssize_t GetSize() const;
    void fetchsector(void *, int = -1);
    void getsector(void *, int = -1, int = 1) throw (GeneralException);
    void sectorseek(int);

  private:
    struct cachedsector {
        Byte sector[2352];
        cachedsector * next, * prev;
        int n;
    };
    String n;
    int sector;
    cachedsector * head, * tail, * sectors[400000];
    int nsectors;

    void removetail();
    void actualize(cachedsector * s);
    void introduce(Byte * datas, int n);
};

#endif