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45 lines
967 B
JavaScript
45 lines
967 B
JavaScript
"use strict";
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const Promise = require("bluebird");
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const awaitVideoElementLoad = require("../await-video-element-load");
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function trySetSrcObject(element, file) {
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if ("srcObject" in element) {
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try {
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element.srcObject = file;
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return true;
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} catch (error) {
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if (error.name === "TypeError") {
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return false;
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} else {
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throw error;
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}
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}
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} else {
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return false;
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}
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}
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module.exports = function loadVideoFile(file) {
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// FIXME: Validation
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let cleanupFunction;
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let element = document.createElement("video");
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if (!trySetSrcObject(element, file)) {
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let objectURL = URL.createObjectURL(file);
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element.src = objectURL;
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// FIXME: Verify that this works correctly, and doesn't prematurely kill the video!
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cleanupFunction = () => URL.revokeObjectURL(objectURL);
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}
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return Promise.try(() => {
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return awaitVideoElementLoad(element);
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}).then(() => {
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if (cleanupFunction != null) {
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cleanupFunction();
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}
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return element;
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});
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};
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