109 lines
2.2 KiB
C++
109 lines
2.2 KiB
C++
#ifndef __DEVICEREADER_H__
|
|
#define __DEVICEREADER_H__
|
|
|
|
#include <Device/TrackSector.h>
|
|
|
|
namespace Device {
|
|
|
|
|
|
class DeviceReader {
|
|
public:
|
|
|
|
virtual ~DeviceReader();
|
|
|
|
virtual void read(unsigned block, void *bp) = 0;
|
|
virtual void read(TrackSector ts, void *bp) = 0;
|
|
|
|
virtual void write(unsigned block, const void *bp) = 0;
|
|
virtual void write(TrackSector ts, const void *bp) = 0;
|
|
|
|
// direct access -- not always available.
|
|
|
|
virtual void *read(unsigned block);
|
|
virtual void *read(TrackSector ts);
|
|
|
|
virtual bool readOnly() = 0;
|
|
virtual bool mapped();
|
|
|
|
};
|
|
|
|
class FileDeviceReader : public DeviceReader {
|
|
|
|
// does not assume ownership of fd.
|
|
FileDeviceReader(int fd, unsigned blocks, bool readOnly);
|
|
//virtual ~FileDeviceReader();
|
|
|
|
public:
|
|
|
|
virtual bool readOnly();
|
|
|
|
|
|
virtual void read(unsigned block, void *bp);
|
|
virtual void read(TrackSector ts, void *bp);
|
|
|
|
virtual void write(unsigned block, const void *bp);
|
|
virtual void write(TrackSector ts, const void *bp);
|
|
|
|
private:
|
|
|
|
int _fd;
|
|
unsigned _blocks;
|
|
bool _readOnly;
|
|
}
|
|
|
|
class MappedFileDeviceReader : public DeviceReader {
|
|
|
|
protected:
|
|
|
|
MappedFileDeviceReader(MappedFile *f, unsigned offset);
|
|
|
|
void *_data;
|
|
|
|
private:
|
|
MappedFile *_file
|
|
};
|
|
|
|
class ProDOSOrderDeviceReader : public MappedFileDeviceReader {
|
|
public:
|
|
|
|
virtual void read(unsigned block, void *bp);
|
|
virtual void read(TrackSector ts, void *bp);
|
|
|
|
virtual void write(unsigned block, const void *bp);
|
|
virtual void write(TrackSector ts, const void *bp);
|
|
|
|
virtual void *read(unsigned block);
|
|
virtual void *read(TrackSector ts);
|
|
|
|
private:
|
|
unsigned blocks;
|
|
};
|
|
|
|
// 16 sectors only.
|
|
class DOSOrderDeviceReader : public MappedFileDeviceReader {
|
|
public:
|
|
|
|
virtual void read(unsigned block, void *bp);
|
|
virtual void read(TrackSector ts, void *bp);
|
|
|
|
virtual void write(unsigned block, const void *bp);
|
|
virtual void write(TrackSector ts, const void *bp);
|
|
|
|
virtual void *read(TrackSector ts);
|
|
|
|
private:
|
|
unsigned _tracks;
|
|
};
|
|
|
|
|
|
|
|
class NibbleDeviceReader : public MappedFileDeviceReader {
|
|
|
|
private:
|
|
|
|
std::vector<unsigned> _map;
|
|
};
|
|
|
|
}
|
|
|
|
#endif |