ambilight-provider/index.js

Ambilight-provider is a module, which when running, is generating a RGB integer array, representing the dominant color of the screen. The color is calculated every given Millisecond, based on the value given in the 'interval' parameter, in the start func

var screenshot = require('desktop-screenshot');
var color = require('dominant-color')
var fs = require('fs');

var timer
var isRunning = false

exports.start = (interval, callback) => {
    isRunning = true
    timer = setInterval(() => {
        screenshot("screenshot.png", function (error, complete) {
          color("screenshot.png", { format: 'rgb' }, (err, color) => {
            if (err) {
                console.log("Computer cant keep up with interval. Try increasing by 25ms")
                return
            }
            callback(color)
          })
        })
      }, interval)
}

exports.stop = () => {
    if (timer != null && isRunning) {
        clearInterval(timer)
        isRunning = false
        try {
            fs.unlinkSync("screenshot.png")
        } catch (err) {
            console.log("Couldn't delete screenshot\n" + err)
        }
        
    }     
}

exports.isRunning = () => {
    return isRunning
}