478 lines
14 KiB
JavaScript
478 lines
14 KiB
JavaScript
// @flow
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import React, { useEffect, useRef, useState } from 'react';
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import Button from 'component/button';
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import * as ICONS from 'constants/icons';
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import classnames from 'classnames';
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import videojs from 'video.js/dist/video.min.js';
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import 'video.js/dist/alt/video-js-cdn.min.css';
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import eventTracking from 'videojs-event-tracking';
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import * as OVERLAY from './overlays';
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import './plugins/videojs-mobile-ui/plugin';
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import qualitySelector from 'videojs-hls-quality-selector';
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import qualityLevels from 'videojs-contrib-quality-levels';
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import isUserTyping from 'util/detect-typing';
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const isDev = process.env.NODE_ENV !== 'production';
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export type Player = {
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on: (string, (any) => void) => void,
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one: (string, (any) => void) => void,
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isFullscreen: () => boolean,
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exitFullscreen: () => boolean,
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requestFullscreen: () => boolean,
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play: () => Promise<any>,
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volume: (?number) => number,
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muted: (?boolean) => boolean,
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dispose: () => void,
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currentTime: (?number) => number,
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ended: () => boolean,
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error: () => any,
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loadingSpinner: any,
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getChild: string => any,
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playbackRate: (?number) => number,
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userActive: (?boolean) => boolean,
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overlay: any => void,
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mobileUi: any => void,
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controlBar: {
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addChild: (string, any) => void,
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},
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};
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type Props = {
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source: string,
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sourceType: string,
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poster: ?string,
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onPlayerReady: Player => void,
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isAudio: boolean,
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startMuted: boolean,
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toggleVideoTheaterMode: () => void,
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};
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type VideoJSOptions = {
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controls: boolean,
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preload: string,
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playbackRates: Array<number>,
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responsive: boolean,
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poster?: string,
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muted?: boolean,
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};
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const videoPlaybackRates = [0.25, 0.5, 0.75, 1, 1.1, 1.25, 1.5, 1.75, 2];
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const IS_IOS =
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(/iPad|iPhone|iPod/.test(navigator.platform) ||
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(navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1)) &&
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!window.MSStream;
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const VIDEO_JS_OPTIONS: VideoJSOptions = {
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preload: 'auto',
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playbackRates: videoPlaybackRates,
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responsive: true,
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controls: true,
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html5: {
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nativeControlsForTouch: IS_IOS,
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hls: {
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overrideNative: !videojs.browser.IS_ANY_SAFARI,
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},
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},
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};
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const F11_KEYCODE = 122;
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const SPACE_BAR_KEYCODE = 32;
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const SMALL_F_KEYCODE = 70;
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const SMALL_M_KEYCODE = 77;
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const SMALL_T_KEYCODE = 84;
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const ARROW_LEFT_KEYCODE = 37;
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const ARROW_RIGHT_KEYCODE = 39;
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const COMMA_KEYCODE = 188;
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const PERIOD_KEYCODE = 190;
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const FULLSCREEN_KEYCODE = SMALL_F_KEYCODE;
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const MUTE_KEYCODE = SMALL_M_KEYCODE;
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const THEATER_MODE_KEYCODE = SMALL_T_KEYCODE;
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const SEEK_FORWARD_KEYCODE = ARROW_RIGHT_KEYCODE;
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const SEEK_BACKWARD_KEYCODE = ARROW_LEFT_KEYCODE;
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const SEEK_STEP = 10; // time to seek in seconds
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if (!Object.keys(videojs.getPlugins()).includes('eventTracking')) {
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videojs.registerPlugin('eventTracking', eventTracking);
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}
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if (!Object.keys(videojs.getPlugins()).includes('hlsQualitySelector')) {
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videojs.registerPlugin('hlsQualitySelector', qualitySelector);
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}
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if (!Object.keys(videojs.getPlugins()).includes('qualityLevels')) {
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videojs.registerPlugin('qualityLevels', qualityLevels);
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}
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// ****************************************************************************
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// LbryVolumeBarClass
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// ****************************************************************************
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const VIDEOJS_CONTROL_BAR_CLASS = 'ControlBar';
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const VIDEOJS_VOLUME_PANEL_CLASS = 'VolumePanel';
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const VIDEOJS_VOLUME_CONTROL_CLASS = 'VolumeControl';
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const VIDEOJS_VOLUME_BAR_CLASS = 'VolumeBar';
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class LbryVolumeBarClass extends videojs.getComponent(VIDEOJS_VOLUME_BAR_CLASS) {
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constructor(player, options = {}) {
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super(player, options);
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}
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static replaceExisting(player) {
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try {
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const volumeControl = player
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.getChild(VIDEOJS_CONTROL_BAR_CLASS)
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.getChild(VIDEOJS_VOLUME_PANEL_CLASS)
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.getChild(VIDEOJS_VOLUME_CONTROL_CLASS);
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const volumeBar = volumeControl.getChild(VIDEOJS_VOLUME_BAR_CLASS);
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volumeControl.removeChild(volumeBar);
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volumeControl.addChild(new LbryVolumeBarClass(player));
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} catch (error) {
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// In case it slips in 'Production', the original volume bar will be used and the site should still be working
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// (just not exactly the way we want).
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if (isDev) throw Error('\n\nvideojs.jsx: Volume Panel hierarchy changed?\n\n' + error);
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}
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}
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handleMouseDown(event) {
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super.handleMouseDown(event);
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event.stopPropagation();
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}
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handleMouseMove(event) {
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super.handleMouseMove(event);
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event.stopPropagation();
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}
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}
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// ****************************************************************************
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// VideoJs
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// ****************************************************************************
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/*
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properties for this component should be kept to ONLY those that if changed should REQUIRE an entirely new videojs element
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*/
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export default React.memo<Props>(function VideoJs(props: Props) {
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const { startMuted, source, sourceType, poster, isAudio, onPlayerReady, toggleVideoTheaterMode } = props;
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const [reload, setReload] = useState('initial');
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let player: ?Player;
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const containerRef = useRef();
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const videoJsOptions = {
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...VIDEO_JS_OPTIONS,
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sources: [
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{
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src: source,
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type: sourceType,
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},
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],
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autoplay: true,
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poster: poster, // thumb looks bad in app, and if autoplay, flashing poster is annoying
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plugins: {
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eventTracking: true,
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overlay: OVERLAY.OVERLAY_DATA,
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},
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};
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videoJsOptions.muted = startMuted;
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const tapToUnmuteRef = useRef();
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const tapToRetryRef = useRef();
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const TAP = {
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NONE: 'NONE',
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UNMUTE: 'UNMUTE',
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RETRY: 'RETRY',
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};
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function showTapButton(tapButton) {
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const setButtonVisibility = (theRef, newState) => {
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// Use the DOM to control the state of the button to prevent re-renders.
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if (theRef.current) {
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const curState = theRef.current.style.visibility === 'visible';
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if (newState !== curState) {
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theRef.current.style.visibility = newState ? 'visible' : 'hidden';
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}
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}
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};
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switch (tapButton) {
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case TAP.NONE:
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setButtonVisibility(tapToUnmuteRef, false);
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setButtonVisibility(tapToRetryRef, false);
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break;
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case TAP.UNMUTE:
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setButtonVisibility(tapToUnmuteRef, true);
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setButtonVisibility(tapToRetryRef, false);
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break;
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case TAP.RETRY:
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setButtonVisibility(tapToUnmuteRef, false);
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setButtonVisibility(tapToRetryRef, true);
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break;
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default:
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if (isDev) throw new Error('showTapButton: unexpected ref');
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break;
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}
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}
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function unmuteAndHideHint() {
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if (player) {
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player.muted(false);
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if (player.volume() === 0) {
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player.volume(1.0);
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}
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}
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showTapButton(TAP.NONE);
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}
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function retryVideoAfterFailure() {
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if (player) {
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setReload(Date.now());
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showTapButton(TAP.NONE);
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}
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}
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function onInitialPlay() {
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if (player && (player.muted() || player.volume() === 0)) {
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// The css starts as "hidden". We make it visible here without
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// re-rendering the whole thing.
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showTapButton(TAP.UNMUTE);
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}
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}
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function onVolumeChange() {
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if (player && !player.muted()) {
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showTapButton(TAP.NONE);
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}
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}
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function onError() {
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showTapButton(TAP.RETRY);
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if (player && player.loadingSpinner) {
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player.loadingSpinner.hide();
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}
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}
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function onEnded() {
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showTapButton(TAP.NONE);
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}
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function handleKeyDown(e: KeyboardEvent) {
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const videoNode: ?HTMLVideoElement = containerRef.current && containerRef.current.querySelector('video, audio');
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if (!videoNode || !player || isUserTyping()) {
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return;
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}
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if (e.keyCode === SPACE_BAR_KEYCODE) {
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videoNode.paused ? videoNode.play() : videoNode.pause();
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}
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// Fullscreen toggle shortcuts
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if (e.keyCode === FULLSCREEN_KEYCODE || e.keyCode === F11_KEYCODE) {
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if (!player.isFullscreen()) {
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player.requestFullscreen();
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} else {
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player.exitFullscreen();
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}
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}
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// Mute/Unmute Shortcuts
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if (e.keyCode === MUTE_KEYCODE) {
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videoNode.muted = !videoNode.muted;
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}
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// Seeking Shortcuts
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if (!e.altKey) {
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const duration = videoNode.duration;
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const currentTime = videoNode.currentTime;
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if (e.keyCode === SEEK_FORWARD_KEYCODE) {
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const newDuration = currentTime + SEEK_STEP;
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videoNode.currentTime = newDuration > duration ? duration : newDuration;
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OVERLAY.showSeekedOverlay(player, SEEK_STEP, true);
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player.userActive(true);
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} else if (e.keyCode === SEEK_BACKWARD_KEYCODE) {
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const newDuration = currentTime - SEEK_STEP;
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videoNode.currentTime = newDuration < 0 ? 0 : newDuration;
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OVERLAY.showSeekedOverlay(player, SEEK_STEP, false);
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player.userActive(true);
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}
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}
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// Playback-Rate Shortcuts ('>' = speed up, '<' = speed down)
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if (e.shiftKey && (e.keyCode === PERIOD_KEYCODE || e.keyCode === COMMA_KEYCODE)) {
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const isSpeedUp = e.keyCode === PERIOD_KEYCODE;
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const rate = player.playbackRate();
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let rateIndex = videoPlaybackRates.findIndex(x => x === rate);
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if (rateIndex >= 0) {
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rateIndex = isSpeedUp ? Math.min(rateIndex + 1, videoPlaybackRates.length - 1) : Math.max(rateIndex - 1, 0);
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const nextRate = videoPlaybackRates[rateIndex];
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OVERLAY.showPlaybackRateOverlay(player, nextRate, isSpeedUp);
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player.userActive(true);
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player.playbackRate(nextRate);
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}
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}
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// Theater Mode shortcut
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if (e.keyCode === THEATER_MODE_KEYCODE) {
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toggleVideoTheaterMode();
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}
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}
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// Create the video DOM element and wrapper
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function createVideoPlayerDOM(container) {
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if (!container) {
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console.error(`VideoPlayer Error: missing ref to container!`);
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return;
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}
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// This seems like a poor way to generate the DOM for video.js
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const wrapper = document.createElement('div');
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wrapper.setAttribute('data-vjs-player', 'true');
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const el = document.createElement(isAudio ? 'audio' : 'video');
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el.className = 'video-js';
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wrapper.appendChild(el);
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container.appendChild(wrapper);
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return el;
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}
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// Initialize video.js
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function initializeVideoPlayer(el) {
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if (!el) {
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console.error(`Failed to initialize video player: Missing element to attach to`);
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return;
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}
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player = videojs(el, videoJsOptions, () => {
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// this seems like a weird thing to have to check for here
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if (!player) {
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console.error(`Failed to create videojs player!`);
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return;
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}
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// Add various event listeners to player
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player.one('play', onInitialPlay);
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player.on('volumechange', onVolumeChange);
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player.on('error', onError);
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player.on('ended', onEnded);
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// Replace volume bar with custom LBRY volume bar
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LbryVolumeBarClass.replaceExisting(player);
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// initialize mobile UI
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player.mobileUi(); // Inits mobile version. No-op if Desktop.
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// I think this is a callback function
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onPlayerReady(player);
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});
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// Add quality selector to player
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player.hlsQualitySelector({
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displayCurrentQuality: true,
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});
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// Add reference to player to global scope
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window.player = player;
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// fixes #3498 (https://github.com/lbryio/lbry-desktop/issues/3498)
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// summary: on firefox the focus would stick to the fullscreen button which caused buggy behavior with spacebar
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player.on('fullscreenchange', () => document.activeElement && document.activeElement.blur());
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return player;
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}
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// This lifecycle hook is only called once (on mount)
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useEffect(() => {
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const vjsElement = createVideoPlayerDOM(containerRef.current);
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const vjsPlayer = initializeVideoPlayer(vjsElement);
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// Add event listener for keyboard shortcuts
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window.addEventListener('keydown', handleKeyDown);
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// Cleanup
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return () => {
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window.removeEventListener('keydown', handleKeyDown);
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if (player) {
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player.dispose();
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window.player = undefined;
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console.log(`Disposed of video.js instance (unmounted)`);
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}
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}
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}, []);
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// Update video player and reload when source URL changes
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useEffect(() => {
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// For some reason the video player is responsible for detecting content type this way
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fetch(source, { method: 'HEAD' }).then(response => {
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const player = window.player;
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if (!player) {
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console.log(`Our player was disposed, we should disregard the fetch result.`);
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return;
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}
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let type = sourceType;
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// override type if we receive an .m3u8 (transcoded mp4)
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if (
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response &&
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response.redirected &&
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response.url &&
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response.url.endsWith('m3u8')
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) {
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type = 'application/x-mpegURL';
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}
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// Update player poster
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// note: the poster prop seems to return null usually.
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if ( poster ) player.poster(poster);
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// Update player source
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player.src({
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src: source,
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type: type,
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});
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console.log(`Updated Player: ${source} (${type}) Poster: ${poster}`);
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});
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return () => {
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console.log('Cleanup after source update.');
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}
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}, [source]);
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return (
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reload && (
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// $FlowFixMe
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<div className={classnames('video-js-parent', { 'video-js-parent--ios': IS_IOS })} ref={containerRef}>
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<Button
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label={__('Tap to unmute')}
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button="link"
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icon={ICONS.VOLUME_MUTED}
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className="video-js--tap-to-unmute"
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onClick={unmuteAndHideHint}
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ref={tapToUnmuteRef}
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/>
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<Button
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label={__('Retry')}
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button="link"
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icon={ICONS.REFRESH}
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className="video-js--tap-to-unmute"
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onClick={retryVideoAfterFailure}
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ref={tapToRetryRef}
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/>
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</div>
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)
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);
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});
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