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disk.h

/* 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.
 *
 * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-11-1/engines/parallaction/disk.h $
 * $Id: disk.h 30944 2008-02-23 22:50:18Z sev $
 *
 */

#ifndef PARALLACTION_DISK_H
#define PARALLACTION_DISK_H

#include "parallaction/defs.h"
#include "common/file.h"
#include "graphics/surface.h"

namespace Parallaction {

class Table;
class Parallaction;
class Gfx;
class Script;
class Font;

struct Frames;
struct Cnv;
struct Sprites;
struct BackgroundInfo;

class Disk {

public:
      Disk() { }
      virtual ~Disk() { }

      virtual Common::String selectArchive(const Common::String &name) = 0;
      virtual void setLanguage(uint16 language) = 0;

      virtual Script* loadLocation(const char *name) = 0;
      virtual Script* loadScript(const char* name) = 0;
      virtual Frames* loadTalk(const char *name) = 0;
      virtual Frames* loadObjects(const char *name) = 0;
      virtual Frames* loadPointer(const char *name) = 0;
      virtual Frames* loadHead(const char* name) = 0;
      virtual Font* loadFont(const char* name) = 0;
      virtual Frames* loadStatic(const char* name) = 0;
      virtual Frames* loadFrames(const char* name) = 0;
      virtual void loadSlide(BackgroundInfo& info, const char *filename) = 0;
      virtual void loadScenery(BackgroundInfo& info, const char* background, const char* mask, const char* path) = 0;
      virtual Table* loadTable(const char* name) = 0;
      virtual Common::SeekableReadStream* loadMusic(const char* name) = 0;
      virtual Common::ReadStream* loadSound(const char* name) = 0;
};




#define MAX_ARCHIVE_ENTRIES         384

class Archive : public Common::SeekableReadStream {

protected:
      bool                    _file;
      uint32                  _fileOffset;
      uint32                  _fileCursor;
      uint32                  _fileEndOffset;
      Common::String    _archiveName;
      char              _archiveDir[MAX_ARCHIVE_ENTRIES][32];
      uint32                  _archiveLenghts[MAX_ARCHIVE_ENTRIES];
      uint32                  _archiveOffsets[MAX_ARCHIVE_ENTRIES];
      Common::File      _archive;
      uint32                  _numFiles;

protected:
      void resetArchivedFile();

public:
      Archive();

      void open(const char* file);
      void close();
      Common::String name() const;
      bool openArchivedFile(const char *name);
      void closeArchivedFile();
      uint32 size() const;
      uint32 pos() const;
      bool eos() const;
      void seek(int32 offs, int whence = SEEK_SET);
      uint32 read(void *dataPtr, uint32 dataSize);
};

class Disk_ns : public Disk {

protected:
      Archive                 _resArchive;
      Archive                 _locArchive;
      char              _languageDir[3];
      Parallaction      *_vm;

protected:
      void errorFileNotFound(const char *s);

public:
      Disk_ns(Parallaction *vm);
      virtual ~Disk_ns();

      Common::String selectArchive(const Common::String &name);
      void setLanguage(uint16 language);
};

class DosDisk_ns : public Disk_ns {

private:
      void unpackBackground(Common::ReadStream *stream, byte *screen, byte *mask, byte *path);
      Cnv* loadExternalCnv(const char *filename);
      Cnv* loadCnv(const char *filename);
      Frames* loadExternalStaticCnv(const char *filename);
      void loadBackground(BackgroundInfo& info, const char *filename);
      void loadMaskAndPath(BackgroundInfo& info, const char *name);
      void parseDepths(Common::SeekableReadStream &stream);
      void parseBackground(BackgroundInfo& info, Common::SeekableReadStream &stream);
      Font *createFont(const char *name, Cnv* cnv);

protected:
      Gfx    *_gfx;

public:
      DosDisk_ns(Parallaction *vm);
      virtual ~DosDisk_ns();

      Script* loadLocation(const char *name);
      Script* loadScript(const char* name);
      Frames* loadTalk(const char *name);
      Frames* loadObjects(const char *name);
      Frames* loadPointer(const char *name);
      Frames* loadHead(const char* name);
      Font* loadFont(const char* name);
      Frames* loadStatic(const char* name);
      Frames* loadFrames(const char* name);
      void loadSlide(BackgroundInfo& info, const char *filename);
      void loadScenery(BackgroundInfo& info, const char* background, const char* mask, const char* path);
      Table* loadTable(const char* name);
      Common::SeekableReadStream* loadMusic(const char* name);
      Common::ReadStream* loadSound(const char* name);
};

class AmigaDisk_ns : public Disk_ns {

protected:
      Cnv* makeCnv(Common::SeekableReadStream &stream);
      Frames* makeStaticCnv(Common::SeekableReadStream &stream);
      void patchFrame(byte *dst, byte *dlta, uint16 bytesPerPlane, uint16 height);
      void unpackFrame(byte *dst, byte *src, uint16 planeSize);
      void unpackBitmap(byte *dst, byte *src, uint16 numFrames, uint16 bytesPerPlane, uint16 height);
      Common::SeekableReadStream *openArchivedFile(const char* name, bool errorOnFileNotFound = false);
      Font *createFont(const char *name, Common::SeekableReadStream &stream);
      void loadMask(BackgroundInfo& info, const char *name);
      void loadPath(BackgroundInfo& info, const char *name);
      void loadBackground(BackgroundInfo& info, const char *name);

public:
      AmigaDisk_ns(Parallaction *vm);
      virtual ~AmigaDisk_ns();

      Script* loadLocation(const char *name);
      Script* loadScript(const char* name);
      Frames* loadTalk(const char *name);
      Frames* loadObjects(const char *name);
      Frames* loadPointer(const char *name);
      Frames* loadHead(const char* name);
      Font* loadFont(const char* name);
      Frames* loadStatic(const char* name);
      Frames* loadFrames(const char* name);
      void loadSlide(BackgroundInfo& info, const char *filename);
      void loadScenery(BackgroundInfo& info, const char* background, const char* mask, const char* path);
      Table* loadTable(const char* name);
      Common::SeekableReadStream* loadMusic(const char* name);
      Common::ReadStream* loadSound(const char* name);
};


//    for the moment DosDisk_br subclasses Disk. When Amiga support will
//  be taken into consideration, it might be useful to add another level
//  like we did for Nippon Safes.
class DosDisk_br : public Disk {

protected:
      Parallaction      *_vm;
      char              _partPath[PATH_LEN];
      char              _languageDir[2];

protected:
      void errorFileNotFound(const char *s);
      Font *createFont(const char *name, Common::ReadStream &stream);
      Sprites*    createSprites(const char *name);

public:
      DosDisk_br(Parallaction *vm);
      virtual ~DosDisk_br();

      Common::String selectArchive(const Common::String &name);
      void setLanguage(uint16 language);
      Script* loadLocation(const char *name);
      Script* loadScript(const char* name);
      Frames* loadTalk(const char *name);
      Frames* loadObjects(const char *name);
      Frames* loadPointer(const char *name);
      Frames* loadHead(const char* name);
      Font* loadFont(const char* name);
      Frames* loadStatic(const char* name);
      Frames* loadFrames(const char* name);
      void loadSlide(BackgroundInfo& info, const char *filename);
      void loadScenery(BackgroundInfo& info, const char* background, const char* mask, const char* path);
      Table* loadTable(const char* name);
      Common::SeekableReadStream* loadMusic(const char* name);
      Common::ReadStream* loadSound(const char* name);
};


} // namespace Parallaction



#endif

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