mirror of
https://github.com/SoPat712/videospeed.git
synced 2025-08-21 18:08:46 -04:00
371 lines
13 KiB
JavaScript
371 lines
13 KiB
JavaScript
chrome.extension.sendMessage({}, function(response) {
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var tc = {
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settings: {
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speed: 1.0, // default 1x
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resetSpeed: 1.0, // default 1x
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speedStep: 0.1, // default 0.1x
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rewindTime: 10, // default 10s
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advanceTime: 10, // default 10s
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resetKeyCode: 82, // default: R
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slowerKeyCode: 83, // default: S
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fasterKeyCode: 68, // default: D
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rewindKeyCode: 90, // default: Z
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advanceKeyCode: 88, // default: X
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displayKeyCode: 86, // default: V
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rememberSpeed: false, // default: false
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startHidden: false, // default: false
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blacklist: `
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www.instagram.com
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twitter.com
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vine.co
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imgur.com
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`.replace(/^\s+|\s+$/gm,'')
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}
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};
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chrome.storage.sync.get(tc.settings, function(storage) {
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tc.settings.speed = Number(storage.speed);
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tc.settings.resetSpeed = Number(storage.resetSpeed);
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tc.settings.speedStep = Number(storage.speedStep);
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tc.settings.rewindTime = Number(storage.rewindTime);
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tc.settings.advanceTime = Number(storage.advanceTime);
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tc.settings.resetKeyCode = Number(storage.resetKeyCode);
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tc.settings.rewindKeyCode = Number(storage.rewindKeyCode);
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tc.settings.slowerKeyCode = Number(storage.slowerKeyCode);
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tc.settings.fasterKeyCode = Number(storage.fasterKeyCode);
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tc.settings.displayKeyCode = Number(storage.displayKeyCode);
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tc.settings.advanceKeyCode = Number(storage.advanceKeyCode);
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tc.settings.rememberSpeed = Boolean(storage.rememberSpeed);
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tc.settings.startHidden = Boolean(storage.startHidden);
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tc.settings.blacklist = String(storage.blacklist);
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initializeWhenReady(document);
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});
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var forEach = Array.prototype.forEach;
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function defineVideoController() {
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tc.videoController = function(target, parent) {
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this.video = target;
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this.parent = target.parentElement || parent;
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this.document = target.ownerDocument;
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this.id = Math.random().toString(36).substr(2, 9);
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if (!tc.settings.rememberSpeed) {
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tc.settings.speed = 1.0;
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tc.settings.resetSpeed = 1.0;
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}
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this.initializeControls();
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target.addEventListener('play', function(event) {
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target.playbackRate = tc.settings.speed;
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});
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target.addEventListener('ratechange', function(event) {
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if (target.readyState === 0) {
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return;
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}
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var speed = this.getSpeed();
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this.speedIndicator.textContent = speed;
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tc.settings.speed = speed;
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chrome.storage.sync.set({'speed': speed});
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}.bind(this));
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target.playbackRate = tc.settings.speed;
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};
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tc.videoController.prototype.getSpeed = function() {
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return parseFloat(this.video.playbackRate).toFixed(2);
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}
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tc.videoController.prototype.remove = function() {
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this.parentElement.removeChild(this);
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}
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tc.videoController.prototype.initializeControls = function() {
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var document = this.document;
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var speed = parseFloat(tc.settings.speed).toFixed(2),
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top = Math.max(this.video.offsetTop, 0) + "px",
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left = Math.max(this.video.offsetLeft, 0) + "px";
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var prevent = function(e) {
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e.preventDefault();
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e.stopPropagation();
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}
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var wrapper = document.createElement('div');
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wrapper.classList.add('vsc-controller');
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wrapper.dataset['vscid'] = this.id;
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wrapper.addEventListener('dblclick', prevent, true);
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wrapper.addEventListener('mousedown', prevent, true);
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wrapper.addEventListener('click', prevent, true);
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if (tc.settings.startHidden) {
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wrapper.classList.add('vsc-hidden');
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}
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var shadow = wrapper.createShadowRoot();
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var shadowTemplate = `
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<style>
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@import "${chrome.extension.getURL('shadow.css')}";
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</style>
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<div id="controller" style="top:${top}; left:${left}">
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<span data-action="drag" class="draggable">${speed}</span>
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<span id="controls">
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<button data-action="rewind" class="rw">«</button>
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<button data-action="slower">-</button>
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<button data-action="faster">+</button>
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<button data-action="advance" class="rw">»</button>
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<button data-action="close" class="hideButton">x</button>
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</span>
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</div>
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`;
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shadow.innerHTML = shadowTemplate;
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shadow.querySelector('.draggable').addEventListener('mousedown', (e) => {
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runAction(e.target.dataset['action'], document);
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});
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forEach.call(shadow.querySelectorAll('button'), function(button) {
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button.onclick = (e) => {
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runAction(e.target.dataset['action'], document);
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}
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});
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this.speedIndicator = shadow.querySelector('span');
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var fragment = document.createDocumentFragment();
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fragment.appendChild(wrapper);
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// Note: when triggered via a MutationRecord, it's possible that the
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// target is not the immediate parent. This appends the controller as
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// the first element of the target, which may not be the parent.
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this.parent.insertBefore(fragment, this.parent.firstChild);
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this.video.classList.add('vsc-initialized');
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this.video.dataset['vscid'] = this.id;
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}
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}
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function initializeWhenReady(document) {
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escapeStringRegExp.matchOperatorsRe = /[|\\{}()[\]^$+*?.]/g;
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function escapeStringRegExp(str) {
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return str.replace(escapeStringRegExp.matchOperatorsRe, '\\$&');
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}
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var blacklisted = false;
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tc.settings.blacklist.split("\n").forEach(match => {
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match = match.replace(/^\s+|\s+$/g,'')
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if (match.length == 0) {
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return;
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}
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var regexp = new RegExp(escapeStringRegExp(match));
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if (regexp.test(location.href)) {
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blacklisted = true;
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return;
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}
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})
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if (blacklisted)
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return;
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var readyStateCheckInterval = setInterval(function() {
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if (document && document.readyState === 'complete') {
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clearInterval(readyStateCheckInterval);
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initializeNow(document);
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}
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}, 10);
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}
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function initializeNow(document) {
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if (document === window.document) {
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defineVideoController();
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} else {
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var link = document.createElement('link');
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link.href = chrome.extension.getURL('inject.css');
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link.type = 'text/css';
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link.rel = 'stylesheet';
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document.head.appendChild(link);
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}
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document.addEventListener('keydown', function(event) {
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var keyCode = event.keyCode;
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// Ignore if following modifier is active.
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if (event.getModifierState("Alt")
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|| event.getModifierState("Control")
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|| event.getModifierState("Fn")
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|| event.getModifierState("Meta")
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|| event.getModifierState("Hyper")
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|| event.getModifierState("OS")) {
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return;
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}
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// Ignore keydown event if typing in an input box
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if ((document.activeElement.nodeName === 'INPUT'
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&& document.activeElement.getAttribute('type') === 'text')
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|| document.activeElement.nodeName === 'TEXTAREA'
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|| document.activeElement.isContentEditable) {
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return false;
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}
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if (keyCode == tc.settings.rewindKeyCode) {
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runAction('rewind', document, true)
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} else if (keyCode == tc.settings.advanceKeyCode) {
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runAction('advance', document, true)
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} else if (keyCode == tc.settings.fasterKeyCode) {
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runAction('faster', document, true)
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} else if (keyCode == tc.settings.slowerKeyCode) {
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runAction('slower', document, true)
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} else if (keyCode == tc.settings.resetKeyCode) {
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runAction('reset', document, true)
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} else if (keyCode == tc.settings.displayKeyCode) {
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runAction('display', document, true)
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}
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return false;
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}, true);
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function checkForVideo(node, parent, added) {
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if (node.nodeName === 'VIDEO') {
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if (added) {
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if (!node.dataset['vscid']) {
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new tc.videoController(node, parent);
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}
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} else {
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if (node.classList.contains('vsc-initialized')) {
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let id = node.dataset['vscid'];
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let ctrl = document.querySelector(`div[data-vscid="${id}"]`)
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if (ctrl) {
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node.classList.remove('vsc-initialized');
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delete node.dataset['vscid'];
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ctrl.remove();
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}
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}
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}
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} else if (node.children != undefined) {
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for (var i = 0; i < node.children.length; i++) {
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checkForVideo(node.children[i],
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node.children[i].parentNode || parent,
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added);
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}
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}
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}
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var observer = new MutationObserver(function(mutations) {
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mutations.forEach(function(mutation) {
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forEach.call(mutation.addedNodes, function(node) {
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if (typeof node === "function")
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return;
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checkForVideo(node, node.parentNode || mutation.target, true);
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})
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forEach.call(mutation.removedNodes, function(node) {
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if (typeof node === "function")
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return;
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checkForVideo(node, node.parentNode || mutation.target, false);
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})
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});
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});
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observer.observe(document, { childList: true, subtree: true });
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var videoTags = document.getElementsByTagName('video');
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forEach.call(videoTags, function(video) {
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new tc.videoController(video);
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});
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var frameTags = document.getElementsByTagName('iframe');
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forEach.call(frameTags, function(frame) {
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// Ignore frames we don't have permission to access (different origin).
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try { var childDocument = frame.contentDocument } catch (e) { return }
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initializeWhenReady(childDocument);
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});
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}
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function runAction(action, document, keyboard) {
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var videoTags = document.getElementsByTagName('video');
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videoTags.forEach = Array.prototype.forEach;
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videoTags.forEach(function(v) {
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var id = v.dataset['vscid'];
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var controller = document.querySelector(`div[data-vscid="${id}"]`);
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showController(controller);
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if (!v.classList.contains('vsc-cancelled')) {
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if (action === 'rewind') {
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v.currentTime -= tc.settings.rewindTime;
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} else if (action === 'advance') {
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v.currentTime += tc.settings.advanceTime;
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} else if (action === 'faster') {
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// Maximum playback speed in Chrome is set to 16:
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// https://cs.chromium.org/chromium/src/media/blink/webmediaplayer_impl.cc?l=103
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var s = Math.min(v.playbackRate + tc.settings.speedStep, 16);
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v.playbackRate = Number(s.toFixed(2));
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} else if (action === 'slower') {
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// Audio playback is cut at 0.05:
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// https://cs.chromium.org/chromium/src/media/filters/audio_renderer_algorithm.cc?l=49
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// Video min rate is 0.0625:
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// https://cs.chromium.org/chromium/src/media/blink/webmediaplayer_impl.cc?l=102
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var s = Math.max(v.playbackRate - tc.settings.speedStep, 0.0625);
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v.playbackRate = Number(s.toFixed(2));
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} else if (action === 'reset') {
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if(v.playbackRate === 1.0) {
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v.playbackRate = tc.settings.resetSpeed;
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} else {
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tc.settings.resetSpeed = v.playbackRate;
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chrome.storage.sync.set({'resetSpeed': v.playbackRate});
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v.playbackRate = 1.0;
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}
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} else if (action === 'close') {
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v.classList.add('vsc-cancelled');
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controller.remove();
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} else if (action === 'display') {
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controller.classList.add('vsc-manual');
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controller.classList.toggle('vsc-hidden');
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} else if (action === 'drag') {
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handleDrag(v, controller);
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}
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}
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});
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}
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function handleDrag(video, controller) {
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const parentElement = controller.parentElement,
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shadowController = controller.shadowRoot.querySelector('#controller');
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video.classList.add('vcs-dragging');
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shadowController.classList.add('dragging');
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const startDragging = (e) => {
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let style = shadowController.style;
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style.left = parseInt(style.left) + e.movementX + 'px';
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style.top = parseInt(style.top) + e.movementY + 'px';
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}
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const stopDragging = () => {
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parentElement.removeEventListener('mousemove', startDragging);
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parentElement.removeEventListener('mouseup', stopDragging);
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parentElement.removeEventListener('mouseleave', stopDragging);
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shadowController.classList.remove('dragging');
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video.classList.remove('vcs-dragging');
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}
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parentElement.addEventListener('mouseup',stopDragging);
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parentElement.addEventListener('mouseleave',stopDragging);
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parentElement.addEventListener('mousemove', startDragging);
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}
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var timer;
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var animation = false;
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function showController(controller) {
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controller.classList.add('vcs-show');
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if (animation)
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clearTimeout(timer);
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animation = true;
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timer = setTimeout(function() {
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controller.classList.remove('vcs-show');
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animation = false;
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}, 2000);
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}
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});
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