如何检测我的显示器现在设置的源？

Now my monitor is set to DVI-D and i know it's my pc. But for example my playstation 4 is connected to HDMI 1 What i want to do is when i change my monitor source to HDMI 1 detect it and when i change it back to DVI-D detect it to so i can then know when my monitor source is on the pc or on the ps4.Now my monitor is set to DVI-D and i know it's