/**
 * Mupen64 - romcache.h
 * Copyright (C) 2008 okaygo
 *
 * Mupen64Plus homepage: http://code.google.com/p/mupen64plus/
 * 
 *
 * This program is free software; you can redistribute it and/
 * or modify it under the terms of the GNU General Public Li-
 * cence as published by the Free Software Foundation; either
 * version 2 of the Licence, or any later version.
 *
 * This program is distributed in the hope that it will be use-
 * ful, but WITHOUT ANY WARRANTY; without even the implied war-
 * ranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public Licence for more details.
 *
 * You should have received a copy of the GNU General Public
 * Licence along with this program; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
 * USA.
 *
**/
#include <limits.h> //PATH_MAX
#define COMMENT_MAXLENGTH 256
#include "md5.h"

typedef struct
{
   char* goodname;
   md5_byte_t md5[16];
   md5_byte_t* refmd5;
   unsigned int crc1;
   unsigned int crc2;
   unsigned char status;
   unsigned char savetype;
   unsigned char players;
   unsigned char rumble;
} romdatabase_entry;

typedef struct _cache_entry
{
    md5_byte_t md5[16];
    time_t timestamp;
    char filename[PATH_MAX];
    char usercomments[COMMENT_MAXLENGTH]; 
    char internalname[81]; //Needs to be 4 times +1 (for '\0') the stored value for UTF8 conversion. 
    unsigned char compressiontype;
    unsigned char imagetype;
    unsigned char cic;
    unsigned short countrycode;
    unsigned int archivefile;
    unsigned int crc1;
    unsigned int crc2;
    int romsize;
    romdatabase_entry* inientry;
    struct _cache_entry* next;
} cache_entry;

enum
{
    RCS_INIT = 1,
    RCS_RESCAN,
    RCS_SLEEP,
    RCS_BUSY,
    RCS_SHUTDOWN,
    RCS_WRITE_CACHE //For quickly saving user comments from the frontend.
};

typedef struct
{
    unsigned int length; 
    unsigned char rcstask; //enum for what rcs thread should do.
    unsigned char rcspause; //bool for pause after last file, toggled by starting and stopping emulation.
    cache_entry* top;
    cache_entry* last;
} rom_cache;

typedef struct _romdatabase_search
{
    romdatabase_entry entry;
    struct _romdatabase_search* next_entry;
    struct _romdatabase_search* next_crc;
    struct _romdatabase_search* next_md5;
} romdatabase_search;

typedef struct
{
    char* comment;
    romdatabase_search* crc_lists[256];
    romdatabase_search* md5_lists[256];
    romdatabase_search* list;
} _romdatabase;

extern romdatabase_entry empty_entry;
extern rom_cache g_romcache;

void* rom_cache_system(void* _arg);
romdatabase_entry* ini_search_by_md5(md5_byte_t* md5);
void romdatabase_open();
void romdatabase_close();

//Should be used by current cheat system (isn't), when cheat system is 
//migrated to md5s, will be fully depreciated.
romdatabase_entry* ini_search_by_crc(unsigned int crc1, unsigned int crc2);