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#ifndef _SD_SDIOCMPT_HXX
#define _SD_SDIOCMPT_HXX

#include <tools/stream.hxx>

//////////////////////////////////////////////////////////////////////////////
class SvStream;

class old_SdrDownCompat
{
protected:
    SvStream&                   rStream;
    UINT32                      nSubRecSiz;
    UINT32                      nSubRecPos;
    UINT16                      nMode;
    BOOL                        bOpen;

protected:
    void Read();
    void Write();

public:
    old_SdrDownCompat(SvStream& rNewStream, UINT16 nNewMode);
    ~old_SdrDownCompat();
    void  OpenSubRecord();
    void  CloseSubRecord();
};
//////////////////////////////////////////////////////////////////////////////
#include "sddllapi.h"

#define SDIOCOMPAT_VERSIONDONTKNOW (UINT16)0xffff

class SD_DLLPUBLIC SdIOCompat : public old_SdrDownCompat
{
private:
    UINT16 nVersion;

public:
                // nNewMode: STREAM_READ oder STREAM_WRITE
                // nVer:     nur beim Schreiben angeben
            SdIOCompat(SvStream& rNewStream, USHORT nNewMode,
                       UINT16 nVer = SDIOCOMPAT_VERSIONDONTKNOW);
            ~SdIOCompat();
    UINT16  GetVersion() const { return nVersion; }
};

#endif      // _SD_SDIOCMPT_HXX