jellyfin-web/src/bower_components/emby-webcomponents/playback/autoplaydetect.js

define([], function() {
    "use strict";

    function supportsHtmlMediaAutoplay() {
        return new Promise(function(resolve, reject) {
            var timeout, elem = document.createElement("video"),
                elemStyle = elem.style;
            if (!("autoplay" in elem)) return void reject();
            elemStyle.position = "absolute", elemStyle.height = 0, elemStyle.width = 0, elem.setAttribute("autoplay", "autoplay"), elem.style.display = "none", document.body.appendChild(elem);
            var testAutoplay = function(arg) {
                clearTimeout(timeout), elem.removeEventListener("playing", testAutoplay), elem.removeEventListener("play", testAutoplay);
                var supported = arg && "playing" === arg.type || arg && "play" === arg.type || 0 !== elem.currentTime;
                elem.parentNode.removeChild(elem), supported ? resolve() : reject()
            };
            elem.addEventListener("play", testAutoplay), elem.addEventListener("playing", testAutoplay);
            try {
                elem.src = "data:video/mp4;base64,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";
                var promise = elem.play();
                promise && promise.catch && promise.catch(reject), timeout = setTimeout(testAutoplay, 500)
            } catch (e) {
                return void reject()
            }
        })
    }
    return {
        supportsHtmlMediaAutoplay: supportsHtmlMediaAutoplay
    }
});