https://codex.online/assets/js/can-autoplay.3.0.2.js

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20
21/* global URL */
22function setupDefaultValues(options) {
23  return Object.assign({
24    muted: false,
25    timeout: 250,
26    inline: false
27  }, options);
28}
29
30function startPlayback(_ref, elementCallback) {
31  var muted = _ref.muted,
32      timeout = _ref.timeout,
33      inline = _ref.inline;
34
35  var _elementCallback = elementCallback(),
36      element = _elementCallback.element,
37      source = _elementCallback.source;
38
39  var playResult = void 0;
40  var timeoutId = void 0;
41  var sendOutput = void 0;
42
43  element.muted = muted;
44  if (muted === true) {
45    element.setAttribute('muted', 'muted');
46  }
47  // indicates that the video is to be played "inline",
48  // that is within the element's playback area.
49  if (inline === true) {
50    element.setAttribute('playsinline', 'playsinline');
51  }
52
53  element.src = source;
54
55  return new Promise(function (resolve) {
56    playResult = element.play();
57    timeoutId = setTimeout(function () {
58      sendOutput(false, new Error('Timeout ' + timeout + ' ms has been reached'));
59    }, timeout);
60    sendOutput = function sendOutput(result) {
61      var error = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;
62
63      // Clean up to avoid MediaElementLeak
64      element.remove();
65      element.srcObject = null;
66
67      clearTimeout(timeoutId);
68      resolve({ result: result, error: error });
69    };
70
71    if (playResult !== undefined) {
72      playResult.then(function () {
73        return sendOutput(true);
74      }).catch(function (playError) {
75        return sendOutput(false, playError);
76      });
77    } else {
78      sendOutput(true);
79    }
80  });
81}
82
83//
84// API
85//
86
87function video(options) {
88  options = setupDefaultValues(options);
89  return startPlayback(options, function () {
90    return {
91      element: document.createElement('video'),
92      source: URL.createObjectURL(VIDEO)
93    };
94  });
95}
96
97function audio(options) {
98  options = setupDefaultValues(options);
99  return startPlayback(options, function () {
100    return {
101      element: document.createElement('audio'),
102      source: URL.createObjectURL(AUDIO)
103    };
104  });
105}
106
107var index = { audio: audio, video: video };
108
109return index;
110
111})));