mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-15 14:18:37 +00:00
109 lines
3.2 KiB
C++
109 lines
3.2 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
*/
|
|
|
|
#include "common/ptr.h"
|
|
#include "common/file.h"
|
|
|
|
#ifndef ADL_DISK_H
|
|
#define ADL_DISK_H
|
|
|
|
namespace Common {
|
|
class SeekableReadStream;
|
|
class String;
|
|
}
|
|
|
|
namespace Adl {
|
|
|
|
class DataBlock {
|
|
public:
|
|
virtual ~DataBlock() { }
|
|
|
|
virtual bool isValid() const = 0;
|
|
virtual Common::SeekableReadStream *createReadStream() const = 0;
|
|
};
|
|
|
|
typedef Common::SharedPtr<DataBlock> DataBlockPtr;
|
|
|
|
class Files {
|
|
public:
|
|
virtual ~Files() { }
|
|
|
|
virtual const DataBlockPtr getDataBlock(const Common::String &filename, uint offset) const = 0;
|
|
virtual Common::SeekableReadStream *createReadStream(const Common::String &filename, uint offset) const = 0;
|
|
};
|
|
|
|
class FilesDataBlock : public DataBlock {
|
|
public:
|
|
FilesDataBlock(const Files *files, const Common::String &filename, uint offset) : _files(files), _filename(filename), _offset(offset) { }
|
|
|
|
bool isValid() const { return true; }
|
|
Common::SeekableReadStream *createReadStream() const;
|
|
|
|
private:
|
|
const Common::String _filename;
|
|
uint _offset;
|
|
const Files *_files;
|
|
};
|
|
|
|
class PlainFiles : public Files {
|
|
public:
|
|
const DataBlockPtr getDataBlock(const Common::String &filename, uint offset = 0) const;
|
|
Common::SeekableReadStream *createReadStream(const Common::String &filename, uint offset = 0) const;
|
|
};
|
|
|
|
class DiskImage {
|
|
public:
|
|
DiskImage();
|
|
virtual ~DiskImage();
|
|
|
|
virtual bool open(const Common::String &filename) = 0;
|
|
virtual const DataBlockPtr getDataBlock(uint track, uint sector, uint offset, uint size) const = 0;
|
|
virtual Common::SeekableReadStream *createReadStream(uint track, uint sector, uint offset, uint size) const = 0;
|
|
|
|
protected:
|
|
Common::File *_f;
|
|
uint _tracks, _sectorsPerTrack, _bytesPerSector;
|
|
};
|
|
|
|
class DiskImageDataBlock : public DataBlock {
|
|
public:
|
|
DiskImageDataBlock(const DiskImage *disk, uint track, uint sector, uint offset, uint size);
|
|
|
|
bool isValid() const;
|
|
Common::SeekableReadStream *createReadStream() const;
|
|
|
|
private:
|
|
uint _track, _sector, _offset, _size;
|
|
const DiskImage *_disk;
|
|
};
|
|
|
|
class DiskImage_DSK : public DiskImage {
|
|
public:
|
|
bool open(const Common::String &filename);
|
|
const DataBlockPtr getDataBlock(uint track, uint sector, uint offset, uint size) const;
|
|
Common::SeekableReadStream *createReadStream(uint track, uint sector, uint offset = 0, uint size = 0) const;
|
|
};
|
|
|
|
} // End of namespace Adl
|
|
|
|
#endif
|