cobalt/modules/stream/select-quality.js
2022-07-09 00:17:56 +06:00

32 lines
No EOL
884 B
JavaScript

import { services, quality as mq } from "../config.js";
function closest(goal, array) {
return array.sort().reduce(function(prev, curr) {
return (Math.abs(curr - goal) < Math.abs(prev - goal) ? curr : prev);
});
}
export default function(service, quality, maxQuality) {
if (quality == "max") {
return maxQuality
}
quality = parseInt(mq[quality])
maxQuality = parseInt(maxQuality)
if (quality >= maxQuality || quality == maxQuality) {
return maxQuality
}
if (quality < maxQuality) {
if (services[service]["quality"][quality]) {
return quality
} else {
let s = Object.keys(services[service]["quality_match"]).filter((q) => {
if (q <= quality) {
return true
}
})
return closest(quality, s)
}
}
}