fileio.h

e1c0df5d-c8bc-48a5-bc02-a2b7c51c0dbf是做mp3的源代码

#ifndef _FILEIO_H

#define _FILEIO_H

#include <avr/io.h>
#include <avr/interrupt.h>
#include <inttypes.h>
#include <string.h>
#include <stdlib.h>
#include <avr/pgmspace.h>
#include <avr/wdt.h>
#include "const.h"
#include "compact.h"
#include "lcd.h"


extern unsigned long fatstart, rootdir, data, maxsect, dirfilesize, playlistlength;
extern unsigned char secpercluster, attrib;
extern unsigned int heads, sectors_per_track, dircluster, filecluster, playtime;
extern unsigned int playlistptr, playlistcl;
extern unsigned char filename[50];
extern unsigned char artalb[50];
extern unsigned char dirname[16];
extern unsigned char lcd_upd, file_bitrate;
extern char artalbpos, titlepos, artalbdir, titledir, scrolltimer;

static unsigned char bitrate[] __attribute__ ((progmem)) =
 {4, 4, 4, 4, 4, 1,
  8, 6, 5, 8, 6, 2,
  12, 7, 6, 12, 7, 3,
  16, 8, 7, 16, 8, 4,
  20, 10, 8, 20, 10, 8,
  24, 12, 10, 24, 12, 10,
  28, 14, 12, 28, 14, 7,
  32, 16, 14, 32, 16, 8,
  36, 20, 16, 36, 20, 16,
  40, 24, 20, 40, 24, 20,
  44, 28, 24, 44, 28, 14,
  48, 32, 28, 48, 32, 16,
  52, 40, 32, 52, 40, 32,
  56, 48, 40, 56, 48, 40};
  

int get_cf_parms();				// fetch cf parameter & fat
unsigned int get_next_cluster(unsigned int lastcl);		// locates next file cluster
unsigned int get_next_direntry(unsigned int dircluster, unsigned int num, char dir, unsigned char type, unsigned char get_id3);
unsigned char get_next_playlist_entry(unsigned char playlistid, char dir);
unsigned char get_lfn(unsigned int dirid);
void get_id3_info(unsigned int startcl);
char parse_tag(unsigned long * offs, unsigned char * buffer);

#endif