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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>{{ title }}</title>
<meta name="viewport" content="width=device-width, initial-scale=1" />
<style>
:root {
--bg: #0f1220;
--card: #0b0d14;
--muted: #9aa0c7;
--accent: #cfe0ff;
--btn-bg: #141826;
}
html, body {
height: 100%;
margin: 0;
font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
background: var(--bg);
color: #e8eaf6;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
.center {
min-height: 100%;
display: grid;
place-items: center;
padding: 18px;
box-sizing: border-box;
padding-bottom: 84px;
}
.player {
width: 100%;
max-width: 720px;
padding: 12px;
}
img.cover {
width: 300px;
height: 300px;
object-fit: cover;
display: block;
margin: 0 auto 12px;
border-radius: 6px;
background: var(--card);
}
h1 { margin: 0 0 6px 0; font-size: clamp(1.5rem, 4vw, 2rem); font-weight: 500; text-align:center; }
.artist { margin-top: 6px; color: var(--muted); font-size: 0.95rem; text-align:center; }
/* visualizer */
.viz-wrap { position: relative; width: 100%; margin-bottom: 6px; }
canvas#visualizer {
width: 100%;
height: 84px;
display: block;
margin: 12px auto 8px;
border-radius: 6px;
background: rgba(255,255,255,0.02);
}
/* overlays */
.viz-overlay {
position: absolute;
top: 8px;
padding: 6px 10px;
border-radius: 6px;
background: rgba(0,0,0,0.12);
color: #e8eaf6;
font-weight: 600;
font-size: 0.9rem;
display: flex;
align-items: center;
gap: 8px;
}
.viz-top-left { left: 8px; }
.viz-top-right { right: 8px; }
/* hide native audio element */
audio#radio-audio { display: none; }
/* controls
Updated layout:
- left-aligned latency + resync grouped
- status on the right
- responsive spacing so items remain aligned and don't overlap
*/
.controls-row {
display: flex;
gap: 12px;
justify-content: space-between;
align-items: center;
margin-top: 12px;
width: 100%;
box-sizing: border-box;
padding: 0 6px;
}
/* compact group for latency + resync */
.control-group {
display: flex;
gap: 10px;
align-items: center;
}
/* allow stacking when narrow */
.control-stack {
display: flex;
flex-direction: column;
align-items: flex-start;
gap: 6px;
}
.btn {
background: var(--btn-bg);
color: #e8eaf6;
border: 1px solid rgba(255,255,255,0.04);
padding: 8px 12px;
border-radius: 6px;
cursor: pointer;
font-weight: 600;
}
.btn:active { transform: translateY(1px); }
/* volume range */
input[type="range"] {
appearance: none;
width: 120px;
height: 6px;
background: rgba(255,255,255,0.06);
border-radius: 6px;
outline: none;
}
input[type="range"]::-webkit-slider-thumb {
-webkit-appearance: none;
width: 12px;
height: 12px;
border-radius: 50%;
background: #e8eaf6;
border: 2px solid var(--bg);
cursor: pointer;
}
.small-muted { color: var(--muted); font-size: 0.9rem; }
/* latency fixed width, monospace (avoid shift)
reduced min-width and left-aligned for better alignment with Resync button
*/
.latency-display {
color: var(--accent);
font-weight: 700;
font-size: 0.9rem;
display: inline-block;
min-width: 84px;
text-align: left;
font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, 'Roboto Mono', monospace;
}
/* status area */
.status-space {
min-width: 100px;
text-align: right;
color: var(--muted);
font-weight: 600;
font-size: 0.9rem;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
/* responsive breakpoint: stack controls on narrow screens */
@media (max-width: 520px) {
.controls-row { flex-direction: column; align-items: stretch; gap: 8px; margin-top: 10px; }
/* stack latency + resync vertically on narrow screens for better touch targets */
.control-group { flex-direction: column; align-items: center; gap: 8px; }
.status-space { text-align: center; min-width: 0; }
}
/* fixed footer */
footer.fixed-footer {
position: fixed;
left: 0; right: 0; bottom: 0;
height: 64px;
display: flex;
align-items: center;
justify-content: center;
gap: 12px;
background: linear-gradient(to top, rgba(6,8,12,0.80), rgba(6,8,12,0.10));
backdrop-filter: blur(6px);
-webkit-backdrop-filter: blur(6px);
box-sizing: border-box;
padding: 10px 14px;
z-index: 60;
}
.route-code {
display: inline-block;
background: rgba(255,255,255,0.03);
padding: 6px 10px;
border-radius: 6px;
font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, 'Roboto Mono', monospace;
font-size: 0.9rem;
color: var(--accent);
border: 1px solid rgba(255,255,255,0.03);
margin: 0 6px;
}
/* tiny status space */
.status-space { min-width: 90px; text-align:center; color: var(--muted); font-weight:600; font-size:0.9rem; }
/* make canvas sharper on some displays */
canvas#visualizer { image-rendering: -webkit-optimize-contrast; }
</style>
</head>
<body>
<main class="center">
<div class="player" role="application" aria-label="YouTube radio player">
<img id="cover" class="cover" src="{{ image_url }}" alt="Cover">
<div id="meta" style="margin-bottom:6px;">
<h1 id="title">Nothing</h1>
<div id="artist" class="artist">Unknown</div>
</div>
<!-- visualizer -->
<div class="viz-wrap" aria-hidden="false">
<canvas id="visualizer" width="900" height="84" aria-hidden="true"></canvas>
<!-- listened time (top-left) -->
<div class="viz-overlay viz-top-left" id="viz-left">
Listened: <strong style="margin-left:6px"><span id="time-listened">0:00</span></strong>
</div>
<!-- volume overlay (top-right) -->
<div class="viz-overlay viz-top-right" id="viz-right" aria-label="volume control">
Vol
<input id="vol-slider" type="range" min="0" max="100" value="100" aria-label="volume" />
</div>
</div>
<!-- hidden audio element -->
<audio id="radio-audio" crossorigin="anonymous" preload="none"></audio>
<!-- Controls: latency and resync displayed inline on wide screens, stacked on narrow screens -->
<div class="controls-row" aria-label="player controls">
<div class="control-group">
<button id="resync-btn" class="btn" title="Attempt to resync to live">Resync</button>
<div class="latency-display" id="latency-display" aria-live="polite">Latency: —</div>
</div>
<div id="status-space" class="status-space" aria-live="polite"></div>
</div>
</div>
</main>
<!-- footer fixed at page bottom with routes -->
<footer class="fixed-footer" role="contentinfo" aria-label="routes footer">
<div class="route-code"><code>/stream</code></div>
<div class="route-code"><code>/playlist.m3u</code></div>
</footer>
<script>
(function(){
const audio = document.getElementById('radio-audio');
const canvas = document.getElementById('visualizer');
const ctx = canvas.getContext('2d');
const cover = document.getElementById('cover');
const titleEl = document.getElementById('title');
const artistEl = document.getElementById('artist');
const timeListenedEl = document.getElementById('time-listened');
const resyncBtn = document.getElementById('resync-btn');
const volSlider = document.getElementById('vol-slider');
const statusSpace = document.getElementById('status-space');
const latencyEl = document.getElementById('latency-display');
// set stream
statusSpace.textContent = '';
audio.src = '/stream';
audio.autoplay = true;
// persisted volume
const VOLUME_KEY = 'yt_radio_volume';
function loadVolume() {
try {
const saved = localStorage.getItem(VOLUME_KEY);
const v = (saved !== null) ? Number(saved) : 100;
const vol = Math.min(100, Math.max(0, Number(v)));
volSlider.value = String(vol);
audio.volume = vol / 100;
audio.muted = (vol === 0);
} catch (e) {
volSlider.value = '100';
audio.volume = 1;
audio.muted = false;
}
}
function saveVolume(n) {
try { localStorage.setItem(VOLUME_KEY, String(n)); } catch(e) {}
}
loadVolume();
// listened timer
let listenedSeconds = 0;
let lastPlayTimestamp = null;
function formatTime(s) {
const m = Math.floor(s/60);
const sec = Math.floor(s%60).toString().padStart(2,'0');
return `${m}:${sec}`;
}
audio.addEventListener('play', () => { lastPlayTimestamp = Date.now(); });
audio.addEventListener('pause', () => {
if (lastPlayTimestamp) {
listenedSeconds += (Date.now() - lastPlayTimestamp)/1000;
lastPlayTimestamp = null;
timeListenedEl.textContent = formatTime(listenedSeconds);
}
});
audio.addEventListener('ended', () => {
if (lastPlayTimestamp) {
listenedSeconds += (Date.now() - lastPlayTimestamp)/1000;
lastPlayTimestamp = null;
timeListenedEl.textContent = formatTime(listenedSeconds);
}
});
setInterval(() => {
if (lastPlayTimestamp) {
const extra = (Date.now() - lastPlayTimestamp)/1000;
timeListenedEl.textContent = formatTime(listenedSeconds + extra);
}
}, 1000);
// volume handler
volSlider.addEventListener('input', (e) => {
const v = Math.round(Number(e.target.value));
audio.volume = v / 100;
audio.muted = (v === 0);
saveVolume(v);
});
// resync logic
const TARGET_DELAY = 1.5;
resyncBtn.addEventListener('click', () => {
try {
const buf = audio.buffered;
if (buf && buf.length) {
const end = buf.end(buf.length - 1);
const target = Math.max(0, end - TARGET_DELAY);
try {
audio.currentTime = target;
audio.play().catch(()=>{});
setTimeout(()=>statusSpace.textContent='', 2000);
return;
} catch(e){}
}
} catch(e){}
audio.src = '/stream?rs=' + Date.now();
audio.load();
audio.play().catch(()=>{});
setTimeout(()=>statusSpace.textContent='', 2000);
});
// latency: always display ms
function formatLatencyMs(s) {
if (s === null || s === undefined || Number.isNaN(s)) return '—';
return `${Math.round(s * 1000)}ms`;
}
function updateLatency(){
let lat = null;
try {
const buf = audio.buffered;
if (buf && buf.length) {
const end = buf.end(buf.length - 1);
lat = Math.max(0, end - audio.currentTime);
} else if (audio.seekable && audio.seekable.length) {
const end = audio.seekable.end(audio.seekable.length - 1);
lat = Math.max(0, end - audio.currentTime);
}
} catch(e){}
latencyEl.textContent = 'Latency: ' + formatLatencyMs(lat);
}
setInterval(updateLatency, 500);
updateLatency();
// now-playing poll
async function updateNowPlaying(){
try {
const res = await fetch('/now_playing', { headers: { 'Accept': 'application/json' } });
if (!res.ok) return;
const json = await res.json();
titleEl.textContent = json.title || 'Nothing';
artistEl.textContent = json.artist || 'Unknown';
if (json.id) cover.src = `https://img.youtube.com/vi/${json.id}/maxresdefault.jpg`;
} catch(e){}
}
updateNowPlaying();
setInterval(updateNowPlaying, 8000);
// resume audio context on gesture
document.addEventListener('click', function once(){
try { if (window.AudioContext && window.AudioContext.prototype.resume) window.AudioContext.prototype.resume(); } catch(_) {}
document.removeEventListener('click', once);
});
// visualizer - purple palette
(function(){
const AudioCtx = window.AudioContext || window.webkitAudioContext;
if (!AudioCtx) { canvas.style.display='none'; return; }
const actx = new AudioCtx();
let src;
try { src = actx.createMediaElementSource(audio); }
catch(e) { canvas.style.display='none'; return; }
const analyser = actx.createAnalyser(); analyser.fftSize = 2048;
src.connect(analyser); analyser.connect(actx.destination);
const bufferLen = analyser.frequencyBinCount;
const data = new Uint8Array(bufferLen);
// handle high-DPI canvas scaling
function resizeCanvas() {
const ratio = window.devicePixelRatio || 1;
const w = canvas.clientWidth;
const h = canvas.clientHeight;
canvas.width = Math.floor(w * ratio);
canvas.height = Math.floor(h * ratio);
ctx.setTransform(ratio, 0, 0, ratio, 0, 0);
}
resizeCanvas();
window.addEventListener('resize', resizeCanvas);
function draw(){
requestAnimationFrame(draw);
analyser.getByteFrequencyData(data);
ctx.clearRect(0,0,canvas.width,canvas.height);
const bars = 64;
const step = Math.max(1, Math.floor(bufferLen / bars));
const barWidth = canvas.width / (bars * (window.devicePixelRatio || 1));
let x = 0;
for (let i = 0; i < bufferLen; i += step) {
const v = data[i];
const h = (v / 255) * canvas.clientHeight;
ctx.fillStyle = `hsl(270,78%,${28 + (v/255) * 52}%)`;
ctx.fillRect(x, canvas.clientHeight - h, barWidth * 0.9, h);
x += barWidth;
}
}
draw();
})();
})();
</script>
</body>
</html>
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