DataLoader.h

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/*  Project nGenEx
        Destroyer Studios LLC
        Copyright © 1997-2004. All Rights Reserved.

        SUBSYSTEM:    nGenEx.lib
        FILE:         DataLoader.h
        AUTHOR:       John DiCamillo

*/

#ifndef DataLoader_h
#define DataLoader_h

#include "Types.h"
#include "List.h"
#include "Text.h"

// +--------------------------------------------------------------------+

class Bitmap;
class Sound;
class Video;

// +--------------------------------------------------------------------+

class DataLoader
{
public:
        static const char* TYPENAME() { return "DataLoader"; }

        enum { DATAFILE_OK, DATAFILE_INVALID, DATAFILE_NOTEXIST };

        DataLoader();

        static DataLoader*   GetLoader() { return loader; }
        static void          Initialize();
        static void          Close();

        void        Reset();
        void        UseFileSystem(bool use=true);
        void        UseVideo(Video* v);
        void        EnableMedia(bool enable=true);

        int         EnableDatafile(const char* name);
        int         DisableDatafile(const char* name);

        void        SetDataPath(const char* path);
        const char* GetDataPath() const { return datapath; }

        bool  IsFileSystemEnabled() const { return use_file_system; }
        bool  IsMediaLoadEnabled()  const { return enable_media;   }

        bool  FindFile(const char* fname);
        int   ListFiles(const char* filter, List<Text>& list, bool recurse=false);
        int   ListArchiveFiles(const char* archive, const char* filter, List<Text>& list);
        int   LoadBuffer(const char* name, BYTE*&  buf, bool null_terminate=false, bool optional=false);
        int   LoadBitmap(const char* name, Bitmap& bmp, int type=0, bool optional=false);
        int   CacheBitmap(const char* name, Bitmap*& bmp, int type=0, bool optional=false);
        int   LoadTexture(const char* name, Bitmap*& bmp, int type=0, bool preload_cache=false, bool optional=false);
        int   LoadSound(const char* fname, Sound*& snd, DWORD flags=0, bool optional=false);
        int   LoadStream(const char* fname, Sound*& snd, bool optional=false);

        void  ReleaseBuffer(BYTE*& buf);
        int   fread(void* buffer, size_t size, size_t count, BYTE*& stream);

private:
        int   LoadIndexed(const char* name, Bitmap& bmp, int type);
        int   LoadHiColor(const char* name, Bitmap& bmp, int type);
        int   LoadAlpha(  const char* name, Bitmap& bmp, int type);

        void  ListFileSystem(const char* filter, List<Text>& list, Text base_path, bool recurse);
        int   LoadPartialFile(const char* fname, BYTE*& buf, int max_load, bool optional=false);
        int   LoadOggStream(const char* fname, Sound*& snd);

        Text        datapath;
        Video*      video;
        bool        use_file_system;
        bool        enable_media;

        static DataLoader* loader;
};

// +--------------------------------------------------------------------+

#endif DataLoader_h