Function compress 

pub fn compress(img: &PhotonImage, quality: u8) -> PhotonImage

Compression

Arguments

• img - A PhotonImage.
• quality - The Quality of the returned PhotonImage.

Example

use photon_rs::native::open_image;
use photon_rs::transform::compress;

let image = open_image("img.jpg").expect("File should open");

let compressed_image = compress(&image, 50);

Adds a constant to a select R, G, or B channel’s value.