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Talk:Private/ds/app/484E94*/pit.bin (view source)
Revision as of 01:48, 31 January 2011
, 01:48, 31 January 2011Blanked the page
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−== pit.bin file reader ==
−<source lang="c">
−/*
− * pitread.c -- pit.bin file reader by Ludo6431 <ludolacost_gm@il_com>
− */
−#include <stdlib.h>
−#include <stdio.h>
−#include <stdarg.h>
−#include <string.h>
−#include <time.h>
−typedef unsigned char u8;
−typedef unsigned short u16;
−typedef unsigned int u32;
−#ifndef BIT
−# define BIT(b) (1<<(b))
−#endif
−void mexit(int ret, char *format, ...) {
− if(format) {
− va_list ap;
− va_start(ap, format);
− vfprintf(stderr, format, ap);
− fprintf(stderr, "\n");
− va_end(ap);
− }
− exit(ret);
−}
−typedef struct PIT_HDR sPIT_HDR;
−struct PIT_HDR {
− u32 magic;
− u32 dunno1; // "00_1"
− u16 slotsnum; // 3000 slots in the file
− u16 msbfolderctr;
− u16 lsbfolderctr; // next folder's number will be ++folderctr
− u16 photoctr; // next photo's number will be ++photoctr
− u16 dunno2; // 0x0000
− u16 framectr; // next frame's number will be ++framectr
− u16 checksum; // crc16 of whole file
− u16 hdrsize; // 0x18
−};
−#define F_DIRNUM(f) (((f)&0x1)*100 + ((f)>>1)&0x7f) // 8bits (100-129)
−#define F_ENTNUM(f) ((((f)>>11)&0x7f)+1) // 7bits (0-99)
−#define F_STICKER(f) (((f)>>18)&0x3)
−#define F_TYPE(f) (((f)>>20)&0x1)
−typedef struct PIT_ENTRY sPIT_ENTRY;
−struct PIT_ENTRY {
− u32 date;
− u8 dunno[8];
− u32 flags; // (bit0: hundreds' digit of folder num; bit1-7: tens' digits of folder num; bit8-10: UNKNOWN (0); bit11-17: photo's number minus 1; bit18-19: sticker 0: None, 1: Star, 2: Clover, 3: Heart; bit20: type 0:photo, 1:frame; bit21-31: UNKNOWN (0))
−};
−int main(int argc, char *argv[]) {
− if(argc!=2) mexit(1, "Usage:\n\t%s <pit.bin>", argv[0]);
− char *fname = argv[1];
− FILE *fd = fopen(fname, "rb+");
− if(!fd) mexit(1, "Can't open file \"%s\"!", fname);
− fseek(fd, 0, SEEK_END);
− unsigned fsize = ftell(fd);
− rewind(fd);
− sPIT_HDR hdr;
− if(fread((void *)&hdr, 1, sizeof(sPIT_HDR), fd)!=sizeof(sPIT_HDR)) {
− fclose(fd);
− mexit(1, "Can't read file \"%s\"!", fname);
− }
− printf("magic : \"%c%c%c%c\"\n", hdr.magic>>24, (hdr.magic>>16)&0xFF, (hdr.magic>>8)&0xFF, hdr.magic&0xFF);
− printf("dunno1 : \"%c%c%c%c\"\n", hdr.dunno1&0xFF, (hdr.dunno1>>8)&0xFF, (hdr.dunno1>>16)&0xFF, hdr.dunno1>>24);
− printf("slotsnum : %d\n", hdr.slotsnum);
− printf("folderctr : %d%02d\n", hdr.msbfolderctr, hdr.lsbfolderctr);
− printf("photoctr : %d\n", hdr.photoctr);
− printf("framectr : %d\n", hdr.framectr);
− printf("checksum : 0x%02x\n", hdr.checksum);
− printf("headersize : %d\n", hdr.hdrsize);
− // jump after the header
− fseek(fd, hdr.hdrsize, SEEK_SET);
− u32 i, photocnt=0, framecnt=0, offset;
− sPIT_ENTRY entry;
− for(i=0; i<hdr.slotsnum; i++) {
− offset = ftell(fd);
− if(fread((void *)&entry, 1, sizeof(sPIT_ENTRY), fd)!=sizeof(sPIT_ENTRY)) {
− fclose(fd);
− mexit(1, "Can't read file \"%s\" (after %d+%d valid entries)!", fname, photocnt, framecnt);
− }
− if(!entry.date) continue;
− switch(F_TYPE(entry.flags)) {
− case 0: // photo
− photocnt++;
− printf("-- photo%04d -- (slot%d in file)\n", photocnt, (offset-hdr.hdrsize)>>4);
− break;
− case 1: // frame
− framecnt++;
− printf("-- frame%04d -- (slot%d in file)\n", framecnt, (offset-hdr.hdrsize)>>4);
− break;
− default:
− break;
− }
− struct tm ttm;
− time_t stm;
− bzero(&ttm, sizeof(ttm));
− ttm.tm_year = 2000 - 1900; // 2000
− ttm.tm_mon = 0; // january
− ttm.tm_mday = 1; // 1st
− stm = mktime(&ttm);
− stm += entry.date;
− printf(" date(UTC) : %s", asctime(gmtime(&stm)));
− printf(" folder : %d\n", F_DIRNUM(entry.flags));
− printf(" number : %d\n", F_ENTNUM(entry.flags));
− char fname[128];
− switch(F_TYPE(entry.flags)) {
− case 0:
− printf(" sticker : %d\n", F_STICKER(entry.flags));
− sprintf(fname, "/DCIM/%03dNIN02/HNI_%04d.JPG", F_DIRNUM(entry.flags), F_ENTNUM(entry.flags));
− break;
− case 1:
− sprintf(fname, "/private/ds/app/484E494A/DCIM/%03dNIN02/HNI_%04d.JPG", F_DIRNUM(entry.flags), F_ENTNUM(entry.flags));
− break;
− default:
− break;
− }
− printf(" filename : %s\n", fname);
− }
− printf("The file contains %d photos and %d frames.\n", photocnt, framecnt);
− fclose(fd);
−}
−</source>