int __fastcall BitmapGetColorsUsed(unsigned int n3, int n26, int a3)
{
  int result; // eax

  result = 0;
  if ( n3 <= 3 )
  {
    if ( n26 > 9 )
    {
      LOBYTE(result) = n26 > 26;
      ++result;
    }
    return *(_DWORD *)(a3 + 4 * (result + 3 * n3) + 128);
  }
  return result;
}