__int64 __fastcall encode(const char *input_file, const char **argv)
{
  rgb *col; // ST28_8@3
  signed int y; // [sp+8h] [bp-138h]@1
  signed int x; // [sp+Ch] [bp-134h]@2
  signed int i; // [sp+10h] [bp-130h]@5
  int bit; // [sp+14h] [bp-12Ch]@6
  rgb *row; // [sp+18h] [bp-128h]@2
  rgb *selected_col; // [sp+20h] [bp-120h]@6
  char message[256]; // [sp+30h] [bp-110h]@1
  __int64 v11; // [sp+138h] [bp-8h]@1

  v11 = *MK_FP(__FS__, 40LL);
  memset(message, 0, sizeof(message));
  printf("message (less than 256 bytes): ", argv, message);
  fgets(message, 256, _bss_start);
  for ( y = 0; y <= 255; ++y )
  {
    row = input_rows[y];
    for ( x = 0; x <= 255; ++x )
    {
      col = &row[x];
      col->red ^= rand() & 1;
      col->green ^= rand() & 1;
      col->blue ^= rand() & 1;
    }
    for ( i = 0; i <= 7; ++i )
    {
      selected_col = &row[32 * i];
      bit = (message[y] >> i) & 1;
      if ( selected_col->blue & 1 )
        selected_col->blue ^= 1u;
      selected_col->blue |= (selected_col->red ^ selected_col->green) & 1 ^ (unsigned __int8)bit;
    }
  }
  return *MK_FP(__FS__, 40LL) ^ v11;
}