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/*****************************************************************************\
fat.h - FAT12/FAT16 file system
(c) 2004 Copyright Hewlett-Packard Development Company, LP
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 USALP
\*****************************************************************************/
#ifndef _FAT_H
#define _FAT_H
#define FAT_HARDSECT 512 /* sector size in bytes */
/* Block size is set to the lowest common denominator. The ps325 reads 3 sectors max per command (LP?). While the ps130, ps 245,
* and ?? can do 8 sector reads.
*/
#define FAT_BLKSIZE 3 /* block size in sectors */
typedef struct
{
char Name[16];
char Attr;
int Size;
} FILE_ATTRIBUTES;
typedef struct
{
char OEMID[8];
int BytesPerSector;
int SectorsPerCluster;
int ReservedSectors;
int RootEntries;
int SectorsPerFat;
char VolumeLabel[11];
char SystemID[8];
int WriteProtect;
} PHOTO_CARD_ATTRIBUTES;
/* APIs */
int FatInit(void);
int FatListDir(void);
int FatReadFile(char *name, int fd);
int FatReadFileExt(char *name, int offset, int len, void *outbuf);
int FatSetCWD(char *dir);
int FatDeleteFile(char *name);
int FatFreeSpace(void);
int FatDirBegin(FILE_ATTRIBUTES * a);
int FatDirNext(FILE_ATTRIBUTES * a);
int FatDiskAttributes(PHOTO_CARD_ATTRIBUTES * pa);
/* System dependent external functions */
extern int ReadSector(int sector, int nsector, void *buf, int size);
extern int WriteSector(int sector, int nsector, void *buf, int size);
extern int verbose;
#if defined(WORDS_BIGENDIAN)
#define h2lits(A) ((((uint16_t)(A) & 0xff00) >> 8) | (((uint16_t)(A) & 0x00ff) << 8)) /* host to little-endian 16-bit value */
#define lit2hs h2lits /* little-endian to host 16-bit value */
#else
#define h2lits(A) (A)
#define lit2hs(A) (A)
#endif
#endif // _FAT_H
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