Stupid CORS, stupid non-indexed audio files!
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music/
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<!DOCTYPE html>
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<!-- HTML5 Playlist by Neale Pickett -->
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<!-- https://github.com/nealey/playlist -->
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<html>
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<head>
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<title>ROF 2023-A</title>
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<meta name="viewport" content="width=device-width">
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<link href="playlist.css" rel="stylesheet">
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<script src="playlist.mjs" type="module"></script>
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</head>
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<body>
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<audio preload id="audio">
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Your browser does not support HTML5 Audio!
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</audio>
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<input type="range" min="0.0" max="1.0" list="audiopos" step="any" id="pos">
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<datalist id="audiopos">
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<option value="0.1"></option>
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<option value="0.2"></option>
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<option value="0.3"></option>
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<option value="0.4"></option>
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<option value="0.5"></option>
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<option value="0.6"></option>
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<option value="0.7"></option>
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<option value="0.8"></option>
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<option value="0.9"></option>
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</datalist>
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<div id="currentTime"></div>
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<div id="duration"></div>
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<div id="controls">
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<a id="prev">⏮</a>
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<a id="next">⏭</a>
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<input type="range" min="0.0" max="1.0" list="tickmarks" step="any" id="vol">
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<datalist id="tickmarks">
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<option value="0.0" label="0%">
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<option value="0.5" label="50%">
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<option value="1.0" label="100%">
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</datalist>
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</div>
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<ol id="playlist">
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<li value=0>0-0 God.mp3</li>
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<li>01 Drums of Belfast.m4a</li>
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<li>04 The Jura Wedding Reels.m4a</li>
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<li>07 Geantraí.mp3</li>
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<li>15 The Sweets of May (Ceili).mp3</li>
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<li>Ni Liom Fein - 121.mp3</li>
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<li>--- Maria ---</li>
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<li>--- St Patrick's Day---</li>
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<li>2-05 Wellerman – Sea Shanty.m4a</li>
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<li>01 Boogie Woogie Bugle Boy.m4a</li>
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<li>Amsterdam Blues Extra A Original.mp3</li>
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<li value=0>----- Intermission -----</li>
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<li value=1>2 - 1 - Adventure of a Lifetime.m4a</li>
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<li>2 - 2 - El Portorico de los Machetes.mp3</li>
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<li>2 - 3 - Orange Rouge.wav</li>
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<li>2 - 4 - Live Set</li>
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<li>2 - 5 - Live Set</li>
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<li>2 - 6 - Pink Panther.mp3</li>
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<li>2 - 7 - Alegrias.wav</li>
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<li>2 - 8 - Rock n Rince.mp3</li>
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<li>2 - 9 - Finale 1.m4a</li>
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<li>2 - 9 - Finale 2.mp3</li>
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</ol>
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</body>
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</html>
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// jshint asi:true
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let ctx = new AudioContext()
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// HTML5 Playlist by Neale Pickett
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// https://github.com/nealey/playlst
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const Millisecond = 1
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const Second = 1000 * Millisecond
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const Minute = 60 * Second
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class Track {
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constructor() {
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this.startedAt = 0
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this.pausedAt = 0
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console.log(this)
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window.track = this
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}
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var base = "."
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async load(url) {
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this.filename = url.split("/").pop()
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let resp = await fetch(url)
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let buf = await resp.arrayBuffer()
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this.abuf = await ctx.decodeAudioData(buf)
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}
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function loadTrack(e) {
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Duration() {
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if (this.abuf) {
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return this.abuf.duration * Second
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}
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return 0
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}
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}
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class Playlist {
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constructor(base="./music") {
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this.base = base
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this.list = {}
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this.current = null
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this.startedAt = 0
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this.pausedAt = 0
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}
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async add(filename) {
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let track = new Track()
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this.list[filename] = track
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await track.load(`${this.base}/${filename}`)
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return track
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}
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async load(filename) {
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this.stop()
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this.current = this.list[filename]
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if (!this.current) {
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this.current = await this.add(filename)
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}
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}
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play(pos=null) {
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let offset = this.pausedAt / Second
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if (pos) {
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offset = this.current.abuf.duration * pos
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}
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if (this.startedAt) {
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this.stop()
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}
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console.log(offset)
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this.source = new AudioBufferSourceNode(ctx)
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this.source.buffer = this.current.abuf
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this.source.connect(ctx.destination)
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this.source.start(0, offset)
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this.startedAt = (ctx.currentTime - offset) * Second
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this.pausedAt = 0
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}
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pause() {
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let pos = this.CurrentTime()
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this.stop()
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this.pausedAt = pos
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}
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stop() {
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if (this.source) {
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this.source.disconnect()
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this.source.stop()
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}
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this.pausedAt = 0
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this.startedAt = 0
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}
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PlayPause() {
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console.log("Play/Pause")
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if (this.startedAt) {
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this.pause()
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} else {
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this.play()
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}
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}
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Seek(pos) {
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if (this.startedAt) {
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this.play(pos)
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} else {
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this.pausedAt = this.Duration() * pos
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}
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}
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CurrentTime() {
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if (this.startedAt) {
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return ctx.currentTime*Second - this.startedAt
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}
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if (this.pausedAt) {
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return this.pausedAt
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}
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return 0
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}
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Duration() {
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return this.current.Duration()
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}
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}
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let playlist = new Playlist()
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window.playlist = playlist
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async function loadTrack(e) {
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let li = e.target
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let audio = document.querySelector("#audio")
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audio.src = base + "/" + li.textContent
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audio.load()
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playlist.load(li.textContent)
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// Update "current"
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for (let cur of document.querySelectorAll(".current")) {
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@ -50,9 +161,9 @@ function ended() {
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next()
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}
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function mmss(s) {
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let mm = Math.floor(s / 60)
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let ss = Math.floor(s % 60)
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function mmss(duration) {
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let mm = Math.floor(duration / Minute)
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let ss = Math.floor((duration / Second) % 60)
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if (ss < 10) {
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ss = "0" + ss
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@ -60,28 +171,21 @@ function mmss(s) {
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return mm + ":" + ss
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}
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function durationchange(e) {
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let duration = e.target.duration
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document.querySelector("#duration").textContent = mmss(duration)
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timeupdate(e)
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}
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function volumechange(e) {
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document.querySelector("#vol").value = e.target.volume
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}
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function timeupdate(e) {
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let currentTime = e.target.currentTime
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let duration = e.target.duration || 1
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function timeupdate() {
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let currentTime = playlist.CurrentTime()
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let duration = playlist.Duration()
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let tgt = document.querySelector("#currentTime")
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let pos = document.querySelector("#pos")
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pos.value = currentTime / duration
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tgt.textContent = mmss(currentTime)
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if (duration - currentTime < 20) {
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if (duration - currentTime < 20 * Second) {
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tgt.classList.add("fin")
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} else {
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tgt.classList.remove("fin")
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@ -90,9 +194,7 @@ function timeupdate(e) {
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function setPos(e) {
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let val = e.target.value
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let audio = document.querySelector("#audio")
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audio.currentTime = audio.duration * val
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playlist.Seek(val)
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}
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function setGain(e) {
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function keydown(e) {
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let audio = document.querySelector("#audio")
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switch (event.key) {
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switch (e.key) {
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case " ": // space bar
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if (audio.paused) {
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audio.play()
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} else {
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audio.pause()
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}
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playlist.PlayPause()
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break
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case "ArrowDown": // Next track
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@ -189,12 +287,13 @@ function run() {
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document.querySelector("#pos").addEventListener("input", setPos)
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document.querySelector("#vol").addEventListener("input", setGain)
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audio.addEventListener("ended", ended)
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audio.addEventListener("timeupdate", timeupdate)
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audio.addEventListener("durationchange", durationchange)
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audio.addEventListener("volumechange", volumechange)
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for (let li of document.querySelectorAll("#playlist li")) {
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playlist.add(li.textContent)
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li.addEventListener("click", loadTrack)
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}
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setInterval(() => timeupdate(), 250 * Millisecond)
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document.querySelector("#vol").value = audio.volume
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