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import Button from '@material-ui/core/Button';
import Ajv from 'ajv';
import { useEffect, useState } from 'react';
import timeline, { slide } from '../timeline';
import * as timelineSchema from '../timeline.schema.json';
import ExitToAppRoundedIcon from '@material-ui/icons/ExitToAppRounded';
import PlayArrowRoundedIcon from '@material-ui/icons/PlayArrowRounded';
import SettingsRemoteRoundedIcon from '@material-ui/icons/SettingsRemoteRounded';
import SettingsRoundedIcon from '@material-ui/icons/SettingsRounded';
import CodeRoundedIcon from '@material-ui/icons/CodeRounded';
import MovieRoundedIcon from '@material-ui/icons/MovieRounded';
class TimedVideoPlayer {
slide: number;
timeline: timeline;
precision: number;
player: HTMLVideoElement;
video: string;
constructor(public framerate: number) {
this.slide = -1;
this.precision = 3;
}
timestampToFrame(timestamp: number): number {
return Math.round((timestamp * 1e3) / (1e3 / this.framerate));
}
frameToTimestamp(frame: number): number {
return frame / this.framerate;
}
registerPlayer(player: HTMLVideoElement) {
this.player = player;
if (this.video) this.player.src = this.video;
this.registerEventListeners();
}
jumpToFrame(frame: number) {
this.player.currentTime = this.frameToTimestamp(frame);
}
handleSlide(slide: slide) {
this.jumpToFrame(slide.frame);
this.player.pause();
}
registerEventListeners() {
if (
!this.video
|| !this.player
|| !this.timeline
) {
return;
}
setInterval(() => {
if (this.player.paused) return;
var frame = this.timestampToFrame(this.player.currentTime);
// debug
document.getElementById('frame').innerText = frame.toString();
var slide = this.timeline.slides[this.slide];
if (!slide) return;
if (frame >= slide.frame) {
this.handleSlide(slide);
}
}, 1e3 / (this.precision * this.framerate));
}
loadVideo(base64Video: string) {
this.video = base64Video;
if (this.player) this.player.src = this.video;
this.registerEventListeners();
}
loadSlides(jsonString: string) {
try {
var timeline = JSON.parse(jsonString);
} catch (e) {
console.log('invalid json object!' + e);
return;
}
var ajv = new Ajv({ allErrors: true });
var validate = ajv.compile(timelineSchema);
if (!validate(timeline)) {
console.log('schema not passed!');
return;
}
this.timeline = timeline as timeline;
this.registerEventListeners();
}
next() {
this.slide++;
this.player.play();
}
previous() {
console.log('previous slide');
}
}
export default function Present() {
useEffect(() => {
setInterval(() => {
document.getElementById('time').innerText = new Date().toLocaleTimeString();
}, 500);
}, []);
var player = new TimedVideoPlayer(60);
useEffect(() => {
var videoEL = document.getElementById('player') as HTMLVideoElement;
player.registerPlayer(videoEL);
/* videoEL.addEventListener('loadeddata', () => { */
/* console.log('initial load'); */
/* }); */
/* videoEL.addEventListener('canplaythrough', () => { */
/* console.log('full load') */
/* }); */
}, []);
return <div className='presentation posfix a0 h100vh'>
<div className='slideWrapper abscenterv posrel'>
<div className='slide posrel'>
<div className='innner posabs a0'>
<video id='player' className='fullwidth' />
</div>
</div>
</div>
<div className='fullscreenControls posabs a0'>
<div className='control previous' onClick={player.previous}>
<span id='frame'>0</span>
</div>
<div
className='control menu'
onClick={() => {
document.getElementById('menu').classList.add('active');
}}
/>
<div className='control next' onClick={() => player.next()} />
</div>
<div className='menu posabs a0' id='menu'>
<div
className='background posabs a0'
onClick={() => {
document.getElementById('menu').classList.remove('active');
}}
/>
<div className='info sidebyside posabs h0 b0'>
<div className='timetitle floatb'>
<h3 className='time numbers nobr' id='time'>14:00:41</h3>
<h1 className='title nobr'>PWS Presentatie</h1>
</div>
<div className='buttons floatb'>
<div className='inner center'>
{false && <Button
variant='contained'
color='default'
className='bg-err'
startIcon={<ExitToAppRoundedIcon />}
children='Stop presentation'
/>}
<Button
variant='contained'
color='default'
startIcon={<PlayArrowRoundedIcon />}
children='Resume presentation'
onClick={() => {
document.getElementById('menu').classList.remove('active');
}}
/>
<input
type='file'
id='vidUpload'
accept='video/*'
className='dispnone'
onChange={event => {
var file = event.target.files[0];
console.log(event.target.files);
if (!file) return;
console.log('new fileReader!');
var reader = new FileReader();
reader.addEventListener('error', () => {
console.log('reader error');
});
reader.addEventListener('abort', () => {
console.log('reader abortus');
});
reader.addEventListener('load', ev => {
console.log('reader done!');
player.loadVideo(ev.target.result as string);
});
reader.addEventListener('progress', (progEv) => {
console.log(progEv.loaded);
});
reader.readAsDataURL(file);
}}
/>
<input
type='file'
id='jsonUpload'
accept='application/json'
className='dispnone'
onChange={event => {
var file = event.target.files[0];
console.log(event.target.files);
if (!file) return;
console.log('new fileReader!');
var reader = new FileReader();
reader.addEventListener('error', () => {
console.log('reader error');
});
reader.addEventListener('abort', () => {
console.log('reader abortus');
});
reader.addEventListener('load', ev => {
console.log('reader done!');
player.loadSlides(ev.target.result as string);
});
reader.addEventListener('progress', (progEv) => {
console.log(progEv.loaded);
});
reader.readAsText(file);
}}
/>
<Button
variant='contained'
color='default'
children='Load video'
startIcon={<MovieRoundedIcon />}
onClick={() => document.getElementById('vidUpload').click()}
/>
<Button
variant='contained'
color='default'
children='Load json'
startIcon={<CodeRoundedIcon />}
onClick={() => document.getElementById('jsonUpload').click()}
/>
{false && <Button
variant='contained'
color='default'
startIcon={<SettingsRemoteRoundedIcon />}
children='Connect remote'
/>}
{false && <Button
variant='contained'
color='default'
startIcon={<SettingsRoundedIcon />}
children='Settings'
/>}
</div>
</div>
<div className='slide posrel floatb'>
<h3 className='time numbers nobr posrel'>slide 1/15</h3>
</div>
</div>
</div>
</div>;
}
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