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resource.h

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2003-2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL: https://svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-9-1/engines/queen/resource.h $
 * $Id: resource.h 20516 2006-02-11 10:07:12Z fingolfin $
 *
 */

#ifndef QUEENRESOURCE_H
#define QUEENRESOURCE_H

#include "common/file.h"
#include "common/util.h"
#include "queen/defs.h"

namespace Queen {

struct ResourceEntry {
      char filename[13];
      uint8 bundle;
      uint32 offset;
      uint32 size;
};

struct GameVersion {
      char versionString[6];
      uint32 tableOffset;
      uint32 dataFileSize;
};

class LineReader {
public:

      LineReader(char *buffer, uint32 bufsize);
      ~LineReader();
      char *nextLine();

private:

      char *_buffer;
      uint32 _bufSize;
      int _current;
};

class Resource {
public:

      Resource();
      ~Resource();

      //! loads the specified from the resource file
      uint8 *loadFile(const char *filename, uint32 skipBytes = 0, uint32 *size = NULL, bool useMalloc = false);

      //! returns true if the file is present in the resource
      bool fileExists(const char *filename) const { return resourceEntry(filename) != NULL; }

      //! returns a reference to a sound file
      Common::File *giveCompressedSound(const char *filename, uint32 *size);

      bool isDemo() const { return !strcmp(_versionString, "PE100"); }
      bool isInterview() const { return !strcmp(_versionString, "PEint"); }
      bool isFloppy() const { return _versionString[0] == 'P'; }
      bool isCD() const { return _versionString[0] == 'C'; }

      //! returns compression type for audio files
      uint8 compression() const { return _compression; }

      //! returns JAS version string (contains language, platform and version information)
      const char *JASVersion() const { return _versionString; }

      //! returns language of the game
      Language getLanguage() const;

      enum Version {
            VER_ENG_FLOPPY   = 0,
            VER_ENG_TALKIE   = 1,
            VER_FRE_FLOPPY   = 2,
            VER_FRE_TALKIE   = 3,
            VER_GER_FLOPPY   = 4,
            VER_GER_TALKIE   = 5,
            VER_ITA_FLOPPY   = 6,
            VER_ITA_TALKIE   = 7,
            VER_SPA_TALKIE   = 8,
            VER_HEB_TALKIE     = 9,
            VER_DEMO_PCGAMES = 10,
            VER_DEMO         = 11,
            VER_INTERVIEW    = 12,

            VER_COUNT        = 13
      };

      enum {
            CURRENT_TBL_VERSION = 1
      };

      enum {
            JAS_VERSION_OFFSET_DEMO = 0x119A8,
            JAS_VERSION_OFFSET_INTV = 0xCF8,
            JAS_VERSION_OFFSET_PC   = 0x12484
      };

protected:

      Common::File *_resourceFile;

      //! compression type for audio files
      uint8 _compression;

      //! JAS version string of the game
      char _versionString[6];

      //! number of entries in resource table
      uint32 _resourceEntries;

      ResourceEntry *_resourceTable;

      //! look for a normal queen version (ie. queen.1)
      bool findNormalVersion();

      //! look for a compressed/rebuilt queen version (ie. queen.1c)
      bool findCompressedVersion();

      //! verify the version of the selected game
      void checkJASVersion();

      //! returns a reference to the ReseourceEntry for the specified filename
      ResourceEntry *resourceEntry(const char *filename) const;

      //! extarct the resource table for the specified game version
      bool readTableFile(const GameVersion *gameVersion);

      //! reads the resource table from a rebuilt datafile (ie. queen.1c)
      void readTableCompResource();

      //! read the resource table from the specified file
      void readTableEntries(Common::File *file);

      //! detect game version based on queen.1 datafile size
      const GameVersion *detectGameVersion(uint32 size) const;

      //! resource table filename (queen.tbl)
      static const char *_tableFilename;

      //! known FOTAQ versions
      static const GameVersion _gameVersions[];

#ifndef PALMOS_68K
      //! resource table for english floppy version
      static ResourceEntry _resourceTablePEM10[];
#endif
};

} // End of namespace Queen

#endif

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