Anri-chan/Source/diminit.cpp

/*

  gets dimensions from IFO file, plugs them into diminit.vob to be used for indexing with anri-chan

  author: DJ Grenola & ballofsnow
  date: 30 July 2007
  license: none (public domain)
  target: win32 (MINGW), recommend using the free IDE from bloodshed.net
  version: beta 0.3

*/

#define LARGE_FILE_SUPPORT

#ifdef LARGE_FILE_SUPPORT
  /* not necessary for mingw/win32 but will probably become so if we start
     trying to compile it on linux and friends */
  #define _FILE_OFFSET_BITS 64
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <bitset>
using namespace std;

/* #define VERBOSE */

#define CHECKIFO_LEN   12   /* DVDVIDEO-VTS */
#define CHECKIFO       { 0x44, 0x56, 0x44, 0x56, 0x49, 0x44, 0x45, 0x4F, 0x2D, 0x56, 0x54, 0x53 } 
#define BUFSIZE        1024*1024

#ifdef LARGE_FILE_SUPPORT
  #define FOPEN fopen64
  #define FSEEK fseeko64
  #define FTELL ftello64
  #define OFF_T off64_t
#else
  #define FOPEN fopen
  #define FSEEK fseek
  #define FTELL ftell
  #define OFF_T int
#endif

void usage(char *argv0);

unsigned char checkifo[CHECKIFO_LEN]=CHECKIFO;
unsigned char buffer[BUFSIZE];

int main (int argc, char **argv) {
  FILE *ifo;
  FILE *vob;  
  char *ifoname=NULL;
  char *vobname=NULL;  
  unsigned char repbytes[4];
    
  printf ("VOB dimensions corrector\n");
  printf ("beta 0.3, DJ Grenola & ballofsnow\n\n");
  printf ("This software comes with no warranty.\n\n");
  
  if (argc!=3) {
    usage(argv[0]);
    return 0;
  }
  
  /* LOAD THE IFO */
  ifoname=argv[1];
  if ((ifo=FOPEN(ifoname,"rb"))==NULL) {
    printf ("[-] Failed to open IFO file \"%s\".\n", ifoname);
    return 1;
  } 
  // Source res is at offset 0x0200, or 512 decimal, 2 bytes.
  fread(buffer,1,520,ifo);
  if (memcmp(checkifo,buffer,12) != 0) {
     printf ("This isn't an IFO file.\n");
     free(buffer);
     fclose(ifo);
     usage(argv[0]);
     return 1;
  }
  bitset<CHAR_BIT> ntscorpal (buffer[512]); 
  ntscorpal  &= 0x10;
  bitset<CHAR_BIT> dimensions (buffer[513]); 
  dimensions &= 0x18; 
    
  if (ntscorpal == 0x00) {
     /* Potential bug if we want to support widescreen. The 2 in byte 4 represents 4:3. */
     printf ("NTSC\n");
     repbytes[3] = 0x24;
     if (dimensions == 0x00) {
       printf ("720x480\n");       
       repbytes[0] = 0x2D;
       repbytes[1] = 0x01;
       repbytes[2] = 0xE0;
     }
     else if (dimensions == 0x08) {
       printf ("704x480\n");
       repbytes[0] = 0x2C;
       repbytes[1] = 0x01;
       repbytes[2] = 0xE0;
     }
     else if (dimensions == 0x10) {
       printf ("352x480\n");
       repbytes[0] = 0x16;
       repbytes[1] = 0x01;
       repbytes[2] = 0xE0;
     }
     else if (dimensions == 0x18) {
       printf ("352x240\n");
       repbytes[0] = 0x16;
       repbytes[1] = 0x00;
       repbytes[2] = 0xF0;
     }
  }
  else if (ntscorpal == 0x10) {
     printf ("PAL\n");
     repbytes[3] = 0x23;
     if (dimensions == 0x00) {
       printf ("720x576\n");
       repbytes[0] = 0x2D;
       repbytes[1] = 0x02;
       repbytes[2] = 0x40;
     }
     else if (dimensions == 0x08) {
       printf ("704x576\n");
       repbytes[0] = 0x2C;
       repbytes[1] = 0x02;
       repbytes[2] = 0x40;
     }
     else if (dimensions == 0x10) {
       printf ("352x576\n");
       repbytes[0] = 0x16;
       repbytes[1] = 0x02;
       repbytes[2] = 0x40;
     }
     else if (dimensions == 0x18) {
       printf ("352x288\n");
       repbytes[0] = 0x16;
       repbytes[1] = 0x01;
       repbytes[2] = 0x20;
     }
  } 
  free(buffer); // ifo buffer
  fclose(ifo);
  /* Finished with IFO */
  
  /* LOAD DIMINIT.VOB */

  vobname=argv[2];
  if ((vob=FOPEN(vobname,"r+b"))==NULL) {
    printf ("[-] Failed to open VOB file \"%s\".\n", vobname);
    return 1;
  } 
  // Offset 828, or 2088 decimal.
  fread(buffer,1,2093,vob);
  fseek ( vob , 2088 , SEEK_SET );
  fwrite (repbytes , 1 , 4 , vob );
  printf ("File has been modified.\n");

  free(buffer); // vob buffer
  fclose(vob);
  return 0;
 }

void usage(char *argv0) {
  printf ("Usage: %s <VTS IFO file> DIMINIT.VOB\n\n", argv0);
}