Is it possible to change the screen resolution with a decrease in the working area on android?

Question

Android

To test the applications on my android phone, the resolution is full hd, through the root I set the resolution to hd to change. Only the image is smeared.
How can I make black bars around the edges and put hd. not stretching was hd on a full hd screen, but pixel to pixel was the same as on Windows.
So it looks like black stripes on the sides on the PC and the pixel resolution is the same, on android it’s necessary.