/* ScummVM - Scumm Interpreter
 * Copyright (C) 2003-2004 The ScummVM project
 *
 * 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.
 *
 * $Header: /cvsroot/scummvm/scummvm/sky/disk.h,v 1.15 2004/01/06 12:45:32 fingolfin Exp $
 *
 */

#ifndef SKYDISK_H
#define SKYDISK_H

#include "stdafx.h"
#include "common/scummsys.h"
#include "common/str.h"

class File;

namespace Sky {

#define MAX_FILES_IN_LIST 60

struct PrefFile {
	uint8 *data;
	uint16 fileNr;
	uint32 fileSize;
	PrefFile *next;
};

class Disk {
public:
	Disk(const Common::String &gameDataPath);
	~Disk(void);

	uint8 *loadFile(uint16 fileNr, uint8 *dest);
	bool fileExists(uint16 fileNr);

	void prefetchFile(uint16 fileNr);
	void flushPrefetched(void);

	uint32 determineGameVersion();

	uint32 _lastLoadedFileSize;

	void fnMiniLoad(uint16 fileNum);
	void fnCacheFast(uint32 list);
	void fnCacheChip(uint32 list);
	void fnCacheFiles(void);
	void fnFlushBuffers(void);
	uint32 *giveLoadedFilesList(void) { return _loadedFilesList; };
	void refreshFilesList(uint32 *list);

protected:

	PrefFile *_prefRoot;
	uint8 *givePrefetched(uint16 fileNr, uint32 *fSize);

	uint8 *getFileInfo(uint16 fileNr);
	void dumpFile(uint16 fileNr);

	uint32 _dinnerTableEntries;

	uint8 *_dinnerTableArea, *_fixedDest, *_fileDest, *_compDest;
	uint32 _fileFlags, _fileOffset, _fileSize, _decompSize, _compFile;
	uint16 _buildList[MAX_FILES_IN_LIST];
	uint32 _loadedFilesList[MAX_FILES_IN_LIST];
	File *_dataDiskHandle;
	File *_dnrHandle;
};

} // End of namespace Sky

#endif
