mtkmenu.c

不知如何使用,哪个会用的指教一下,谢谢QQ547873739

/*  mtkmenu, 6/sep/03
    (c)copyright 2003, av_pete
    a tool to display contents of a mtkosd menu string block. 

    note: this tool does *not* correlate menu items to code functions.

    mtkosd menu string block overview:
    the menu block has a header which points to an index (see mtk_header_t). 
    the index points to numerous menu sets. there is typically a menu set for
    each language supported by the firmware. within each menu set there are 
    numerous records. each records stores some basic fields (see mtk_record_t)
    and the string text.
*/


#include <stdlib.h>
#include <stdio.h>

typedef struct {
    unsigned char magic[12];          /* "MTKOSD 0.1\0\0" */
    int index;
} mtk_header_t;


typedef struct {
    char length1;
    char length2;
    char zero;      /* often zero; possibly a "flags" field */
} mtk_record_t;


/* ------------------------ */

#define SANITIZE(X)   ( ((X)<32||(X)>127) ? '.' : (X) )
void print_raw(unsigned char *buf, int length)
{
    int i;
    for(i=0;i<length;i++)
        printf("%c", SANITIZE(buf[i]));
}

void dump_menu(int start_address, int table_offset, int data_offset, FILE *f)
{
   mtk_record_t rec;
   int num_records, i;

   fseek(f, start_address + table_offset, SEEK_SET);
   fread(&num_records, sizeof(long), 1, f);

   for (i=0; i < num_records ; i++) {
      int offset;
	  unsigned char buf[1024];

      fseek(f, start_address + table_offset + 4 + i*4, SEEK_SET);
      fread(&offset, sizeof(long), 1, f);

      fseek(f, start_address + data_offset + offset, SEEK_SET);
      fread(&rec, sizeof(mtk_record_t), 1, f);
	  fread(buf, rec.length1, 1, f);
      printf("%3i: 0x%x\t : %2i %2i %2i : ", i, offset, rec.length1, rec.length2, rec.zero);
	  print_raw(buf, rec.length1);
	  printf("\n");
	  if (rec.length1 != rec.length2) printf("warning: length1 != length2\n");
	  if (rec.zero != 0) printf("warning: zero != 0\n");
    }
}


#define MAX_NUM_MENUS  1024

int main(int argc, char **argv)
{
    FILE * f;
    mtk_header_t hdr;
    unsigned int start_address;
    int i;
    int num_menus;
    int menu[MAX_NUM_MENUS][2];

    if (argc<2||argc>4) {
        printf("usage: %s filename.bin [start_address]\n", argv[0]);
	printf("\nstart_address=location in file where MTKOSD 0.1 magic header appears\n");
	return 0;
    }


    f = fopen(argv[1], "rb");
    if (f==NULL) {
       printf("fopen failed\n");
       return EXIT_FAILURE;
    }

    if (argc==3) {
	if (sscanf(argv[2],"0x%x", &start_address)!=1 &&
	    sscanf(argv[2],"%u", &start_address)!=1) {
            printf("invalid start_address\n");
            fclose(f);
            return EXIT_FAILURE;
        }
    }else{
        start_address = 0;
    }

    printf("[header]\n");
    fseek(f, start_address, SEEK_SET);
    fread(&hdr, sizeof(mtk_header_t), 1, f);
    printf("magic   "); print_raw(hdr.magic, 12); printf("\n");
    printf("index   %i (0x%x)\n", hdr.index, hdr.index);

    printf("\n[menu index]\n");
    fseek(f, start_address + hdr.index, SEEK_SET);
    fread(&num_menus, sizeof(long), 1, f);
    printf("num_menus   %i (0x%x)\n", num_menus, num_menus);
    if (num_menus > MAX_NUM_MENUS) {
        printf("warning: insufficient menus[] array; increase MAX_NUM_MENUS\n");
    }

    /* read menu index offsets */
    for (i=0; i < num_menus ; i++) {
        fread(&menu[i][0], sizeof(long), 1, f);
    }

    /* read menu data offsets */
    printf("num : index\t : data\n");
    printf("--------------------------\n");
    for (i=0; i < num_menus ; i++) {
        fread(&menu[i][1], sizeof(long), 1, f);
	    printf("%03i : 0x%x\t : 0x%x\n", i, menu[i][0], menu[i][1]);
    }
    printf("\n");

    for (i=0; i < num_menus ; i++) {
        printf("\n[menu %i]\n", i);
        dump_menu(start_address, menu[i][0], menu[i][1], f);
    }

    fclose(f);

    return EXIT_SUCCESS;
}