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dc5fc4b a1df431 dc5fc4b 48834e0 a1df431 dc5fc4b a1df431 dc5fc4b a1df431 ade0af5 a1df431 dc5fc4b 48834e0 08e9d45 689aadf 08e9d45 48834e0 08e9d45 48834e0 08e9d45 48834e0 08e9d45 48834e0 08e9d45 689aadf 08e9d45 48834e0 08e9d45 48834e0 08e9d45 48834e0 08e9d45 48834e0 a1df431 dc5fc4b a1df431 dc5fc4b a1df431 a6d1165 dc5fc4b a1df431 dc5fc4b a1df431 dc5fc4b a1df431 48834e0 dc5fc4b a6d1165 a1df431 dc5fc4b a1df431 dc5fc4b a1df431 ade0af5 a1df431 dc5fc4b a1df431 dc5fc4b a1df431 ade0af5 a1df431 ade0af5 a1df431 ade0af5 a1df431 dc5fc4b a1df431 dc5fc4b a1df431 0a5169b a1df431 ade0af5 a1df431 48834e0 a1df431 48834e0 a1df431 dc5fc4b a1df431 dc5fc4b a1df431 dc5fc4b a1df431 48834e0 a1df431 dc5fc4b a1df431 dc5fc4b a1df431 dc5fc4b a1df431 dc5fc4b a1df431 dc5fc4b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 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839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 | <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>ace-step-jam</title>
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link href="https://fonts.googleapis.com/css2?family=Hanken+Grotesk:wght@300;400;500;600;700&display=swap" rel="stylesheet" />
<script src="https://cdn.jsdelivr.net/npm/mp4-muxer@5.1.3/build/mp4-muxer.min.js"></script>
<style>
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
--bg: oklch(0.13 0.006 260);
--surface: rgba(255, 255, 255, 0.04);
--surface-2: rgba(255, 255, 255, 0.06);
--surface-3: rgba(255, 255, 255, 0.09);
--border: rgba(255, 255, 255, 0.08);
--accent: oklch(0.90 0.005 260);
--accent-dim: oklch(0.40 0.005 260);
--accent-glow: rgba(255, 255, 255, 0.08);
--progress: oklch(0.72 0.14 155);
--text: rgba(255, 255, 255, 0.87);
--text-muted: rgba(255, 255, 255, 0.40);
--text-faint: rgba(255, 255, 255, 0.25);
--error: oklch(0.68 0.19 22);
--success: oklch(0.72 0.14 155);
--radius: 8px;
--radius-lg: 10px;
--font: 'Hanken Grotesk', system-ui, sans-serif;
}
html, body {
height: 100%; background: var(--bg); color: var(--text);
font-family: var(--font); font-size: 13.5px; line-height: 1.5;
-webkit-font-smoothing: antialiased;
}
body { display: flex; flex-direction: column; min-height: 100vh; }
/* ── Layout ───────────────────────────────────────────────────────────── */
.page { display: flex; flex: 1; max-width: 1100px; width: 100%; margin: 0 auto; padding: 28px 20px 0; gap: 20px; align-items: flex-start; }
.col-left { flex: 1; min-width: 0; max-width: 480px; position: sticky; top: 0; background: var(--bg); }
.col-right { flex: 1; min-width: 0; }
/* ── Header ───────────────────────────────────────────────────────────── */
header { padding: 0 0 20px; text-align: left; }
.wordmark { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 4px; }
.wordmark-logo {
height: 21px; width: auto; color: var(--text); flex-shrink: 0;
}
.version {
font-family: ui-monospace, 'SF Mono', monospace;
font-size: 10px; font-weight: 500; letter-spacing: 0.03em;
color: var(--text); border: 1px solid var(--border);
border-radius: 4px; padding: 1px 5px;
text-decoration: none; transition: border-color 0.15s, color 0.15s;
}
.version:hover { color: var(--text); border-color: rgba(255, 255, 255, 0.15); }
header p { font-size: 14px; color: var(--text-muted); }
/* ── Compose box ─────────────────────────────────────────────────────── */
.compose-box {
background: var(--surface); border: 1px solid var(--border);
border-radius: var(--radius-lg); margin-bottom: 10px;
transition: border-color 0.15s;
}
.compose-box:focus-within { border-color: rgba(255, 255, 255, 0.14); }
.compose-box #description-input {
background: transparent; border: none; border-radius: var(--radius-lg) var(--radius-lg) 0 0;
padding: 14px 14px 6px; height: 80px;
}
.compose-box #description-input:focus,
.compose-box #description-input:focus-visible { border: none; outline: none; }
.compose-controls {
display: flex; gap: 4px; padding: 4px 10px 10px;
align-items: center; flex-wrap: wrap;
}
.compose-controls .pill {
background: transparent; border: none; padding: 4px 8px;
font-size: 11px; border-radius: 6px;
}
.compose-controls .pill:hover { background: var(--surface-2); }
.compose-controls .pill select { font-size: 11px; min-width: 44px; background: transparent; border: none; }
.compose-controls .pill input[type="checkbox"] { width: 11px; height: 11px; }
.compose-controls .seed-input {
width: 48px !important; font-size: 11px !important; padding: 3px 6px !important;
background: transparent !important; border-radius: 6px !important;
}
.compose-controls .generate-btn {
width: auto; padding: 5px 14px; font-size: 12px;
border-radius: 6px; letter-spacing: 0;
}
/* ── Inputs ───────────────────────────────────────────────────────────── */
textarea, input[type="text"], input[type="number"], select {
width: 100%; background: var(--surface-2); border: 1px solid var(--border);
border-radius: var(--radius); color: var(--text); font-family: var(--font);
font-size: 13.5px; padding: 9px 11px; outline: none; transition: border-color 0.15s;
}
textarea:focus, input:focus, select:focus { border-color: rgba(255, 255, 255, 0.18); }
textarea:focus-visible, input:focus-visible, select:focus-visible { outline: 1px solid rgba(255, 255, 255, 0.08); outline-offset: 1px; }
textarea::placeholder, input::placeholder { color: var(--text-faint); }
textarea { resize: none; }
#description-input { height: 76px; font-size: 14px; }
.prompt-hint { margin-top: 6px; font-size: 11px; color: var(--text-faint); }
/* ── Controls row ─────────────────────────────────────────────────────── */
.controls-row { display: flex; gap: 6px; margin-bottom: 10px; align-items: center; flex-wrap: wrap; }
.pill {
display: inline-flex; align-items: center; gap: 5px;
font-size: 12px; color: var(--text-muted); cursor: pointer; user-select: none;
background: var(--surface); border: 1px solid var(--border);
border-radius: var(--radius); padding: 6px 10px; white-space: nowrap;
transition: border-color 0.15s;
}
.pill:hover { border-color: rgba(255, 255, 255, 0.12); }
.pill input[type="checkbox"] { width: 12px; height: 12px; accent-color: var(--accent); cursor: pointer; }
.pill:has(input:checked) span { color: var(--text); }
.pill select { background: transparent; border: none; color: var(--text); font-size: 12px; padding: 0; min-width: 56px; }
.seed-input { width: 72px !important; font-size: 12px !important; padding: 6px 8px !important; }
.spacer { flex: 1; }
/* ── Generate button ──────────────────────────────────────────────────── */
.generate-btn {
width: 100%; background: var(--accent); border: none;
border-radius: var(--radius); color: oklch(0.13 0.006 260); font-family: var(--font);
font-size: 14px; font-weight: 600; padding: 11px; cursor: pointer;
transition: opacity 0.15s, transform 0.1s; letter-spacing: -0.01em;
}
.generate-btn:hover:not(:disabled) { opacity: 0.88; }
.generate-btn:active:not(:disabled) { transform: scale(0.99); }
.generate-btn:disabled { background: var(--accent-dim); cursor: not-allowed; opacity: 0.5; }
.generate-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.generate-btn.loading { animation: btn-pulse 2s ease-in-out infinite; }
@keyframes btn-pulse {
0%, 100% { opacity: 1; }
50% { opacity: 0.7; }
}
/* ── Status ───────────────────────────────────────────────────────────── */
.status-bar { font-size: 11.5px; color: var(--text-muted); text-align: center; padding: 0; min-height: 0; display: none; }
.status-bar.error { display: block; color: var(--error); padding: 6px 0; }
.status-bar.success { display: none; }
/* ── Output card ──────────────────────────────────────────────────────── */
.output-card {
background: var(--surface); border: 1px solid var(--border);
border-radius: var(--radius-lg); padding: 14px; margin-bottom: 10px;
animation: fade-in 0.25s ease;
}
@keyframes fade-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
#waveform {
display: flex; align-items: end; gap: 1px; height: 56px;
background: var(--surface-2); border-radius: var(--radius);
padding: 8px 10px; cursor: pointer; margin-bottom: 10px;
}
#waveform .bar {
flex: 1; background: var(--text-faint); border-radius: 1px;
transition: background 0.15s;
}
.playback-controls { display: flex; align-items: center; gap: 10px; }
.play-btn {
width: 30px; height: 30px; background: var(--accent); border: none;
border-radius: 50%; color: oklch(0.13 0.006 260); font-size: 12px; cursor: pointer;
display: flex; align-items: center; justify-content: center; flex-shrink: 0;
transition: opacity 0.15s;
}
.play-btn:hover { opacity: 0.85; }
.play-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.time-display { font-size: 11.5px; color: var(--text-muted); font-variant-numeric: tabular-nums; flex: 1; }
.download-btn {
display: inline-flex; align-items: center; gap: 4px; background: #fff;
border: none; border-radius: 6px; color: #111;
font-family: var(--font); font-size: 11px;
font-weight: 600; padding: 5px 10px; cursor: pointer;
transition: opacity 0.15s;
}
.download-btn:hover { opacity: 0.85; }
.download-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.download-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.share-icon-btn {
display: inline-flex; align-items: center; justify-content: center;
width: 16px; height: 16px; background: #fff; border: none; border-radius: 3px;
color: #111; font-size: 10px; cursor: pointer; flex-shrink: 0; margin-left: 4px;
transition: opacity 0.15s;
}
.share-icon-btn:hover { opacity: 0.85; }
.share-icon-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.share-icon-btn svg { width: 9px; height: 9px; }
/* Video generation overlay */
.video-overlay {
position: fixed; inset: 0; background: rgba(0,0,0,0.85);
display: flex; flex-direction: column; align-items: center; justify-content: center;
z-index: 100; gap: 12px;
}
.video-overlay .label { font-size: 13px; color: var(--text-muted); }
.video-overlay .pct { font-size: 28px; font-weight: 600; color: var(--text); font-variant-numeric: tabular-nums; }
.video-overlay .bar-track { width: 200px; height: 3px; background: rgba(255,255,255,0.1); border-radius: 2px; overflow: hidden; }
.video-overlay .bar-fill { height: 100%; background: #fff; border-radius: 2px; transition: width 0.3s; }
/* ── Community feed ───────────────────────────────────────────────────── */
.feed-header {
font-size: 11px; font-weight: 600; color: var(--text-muted);
text-transform: uppercase; letter-spacing: 0.06em;
margin-bottom: 10px;
}
.feed-empty { font-size: 12px; color: var(--text-faint); text-align: center; padding: 32px 0; }
.song-card {
background: transparent; border: 1px solid transparent;
border-radius: var(--radius); padding: 8px 10px; margin-bottom: 6px;
cursor: pointer; transition: background 0.15s;
}
.song-card:hover { background: var(--surface); }
.song-card.playing { background: var(--surface); }
.song-card-top { display: flex; align-items: center; gap: 8px; margin-bottom: 3px; }
.song-play-btn {
width: 26px; height: 26px; background: var(--surface-3); border: 1px solid var(--border);
border-radius: 50%; color: var(--text-muted); font-size: 10px; cursor: pointer;
display: flex; align-items: center; justify-content: center; flex-shrink: 0;
transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.song-play-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.song-card:hover .song-play-btn { background: rgba(255, 255, 255, 0.08); color: var(--text); border-color: rgba(255, 255, 255, 0.12); }
.song-card.playing .song-play-btn { background: var(--accent); color: oklch(0.13 0.006 260); border-color: var(--accent); }
.song-title { font-size: 13px; font-weight: 500; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.song-tags { font-size: 11px; color: var(--text-muted); flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; text-align: right; }
.song-duration { font-size: 11px; color: var(--text-muted); flex-shrink: 0; font-variant-numeric: tabular-nums; margin-left: 8px; }
/* ── Placeholder (loading state) ──────────────────────────────────────── */
.placeholder-card {
background: var(--surface); border: 1px solid rgba(255, 255, 255, 0.12);
border-radius: var(--radius-lg); padding: 14px;
margin-bottom: 10px; animation: fade-in 0.25s ease;
}
.placeholder-title { font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 3px; }
.placeholder-sub { font-size: 11px; color: var(--text-muted); margin-bottom: 10px; }
.fake-waveform {
display: flex; align-items: end; gap: 2px; height: 44px;
background: var(--surface-2); border-radius: var(--radius); padding: 8px 10px;
}
.fake-waveform .bar {
flex: 1; background: var(--accent); border-radius: 1px; opacity: 0.3;
animation: wave-pulse 1.2s ease-in-out infinite;
}
@keyframes wave-pulse {
0%, 100% { transform: scaleY(0.3); opacity: 0.15; }
50% { transform: scaleY(1); opacity: 0.4; }
}
/* ── Mini waveform ────────────────────────────────────────────────────── */
.mini-waveform {
display: flex; align-items: end; gap: 1px; height: 22px; margin-top: 5px;
cursor: pointer;
}
.mini-waveform .bar {
flex: 1; background: var(--text-faint); border-radius: 1px;
transition: background 0.2s;
}
.song-card.playing .mini-waveform .bar { background: var(--accent); }
.song-card:hover .mini-waveform .bar { background: rgba(255, 255, 255, 0.22); }
/* ── Spinner ──────────────────────────────────────────────────────────── */
.spinner {
display: inline-block; width: 12px; height: 12px;
border: 2px solid rgba(0, 0, 0, 0.12); border-top-color: oklch(0.13 0.006 260);
border-radius: 50%; animation: spin 0.7s linear infinite; vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }
/* ── Footer ───────────────────────────────────────────────────────────── */
footer { padding: 20px; text-align: center; font-size: 11px; color: var(--text-faint); }
footer a { color: var(--text-muted); text-decoration: none; }
footer a:hover { color: var(--text); }
/* ── Upsell ───────────────────────────────────────────────────────────── */
.upsell {
font-size: 11px; color: var(--text-faint); text-align: center;
margin: 6px 0 2px; padding: 0;
}
.upsell a { color: var(--text-muted); text-decoration: none; border-bottom: 1px dotted var(--border); }
.upsell a:hover { color: var(--text); border-bottom-color: var(--text-muted); }
.upsell.hidden { display: none; }
/* ── Mobile ───────────────────────────────────────────────────────────── */
.share-label-short { display: none; }
@media (max-width: 800px) {
.page { flex-direction: column; padding: 20px 16px 0; gap: 16px; }
.col-left, .col-right { max-width: none; width: 100%; }
.song-card-top .song-tags { display: none; }
.controls-row { gap: 5px; }
.seed-input { width: 60px !important; }
.share-label-full { display: none; }
.share-label-short { display: inline; }
}
</style>
</head>
<body>
<div class="page">
<!-- ════ LEFT: Create ════ -->
<div class="col-left">
<header>
<div class="wordmark">
<svg class="wordmark-logo" viewBox="0 0 1357 390" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" d="M429.554 121.056c25.685-2.701 56.59 8.361 65.05 35.015 6.4 20.237-1.839 45.271-23.479 51.909-10.535 3.243-26.295 1.729-29.56-10.892-1.465-7.657 4.81-15.286 7.43-22.246 2.915-7.759 2.54-20.084-5.83-24.234-12.865-6.234-25.751 10.698-30.446 20.741-11.515 24.623-18.194 66.318-9.654 92.045 15.96 48.099 79.485 21.441 93.715-13.469 1.85-4.537.905-13.069 1.885-18.054 4.24-45.958 30.43-90.954 75.74-106.514 34.455-11.835 78.87-.084 91.26 37.146 4.43 13.542 2.515 29.945-3.84 42.61-14.065 26.676-46.055 36.676-72.945 45.039-6.48 2.225-18.736 5.131-24.076 7.796q.107 1.334.326 2.656c5.275 31.502 38.935 36.362 64.115 25.899 23.91-9.935 38.415-24.933 53.5-45.365 5.055-5.088 11.455-3.266 11.695 4.253.285 5.284-2.34 10.701-4.915 15.32-17.715 31.762-47.551 61.527-83.131 71.447-37.425 10.435-79.034-3.97-97.779-38.678-1.09-2.018-3.645-8.147-5.085-9.36-3.25 2.494-10.835 11.736-14.61 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<a href="https://huggingface.co/ACE-Step/acestep-v15-xl-turbo" target="_blank" class="version">ACE-Step v1.5</a>
</div>
<p>Describe any song. AI writes & produces it.</p>
</header>
<div class="compose-box">
<textarea id="description-input"
placeholder="A chill lo-fi track for studying, ninja battle anthem, love song about AI..."
></textarea>
<div class="compose-controls">
<label class="pill">
<select id="duration-select">
<option value="30">30s</option>
<option value="60" selected>1 min</option>
<option value="120">2 min</option>
</select>
</label>
<label class="pill"><input type="checkbox" id="instrumental-check" /><span>Instrumental</span></label>
<label class="pill"><input type="checkbox" id="community-check" checked /><span class="share-label-full">Share in community</span><span class="share-label-short">Share</span></label>
<span class="spacer"></span>
<button class="generate-btn" id="generate-btn">Generate</button>
</div>
</div>
<p class="upsell" id="upsell-ace-studio">
Want more control & longer songs?
<a href="https://acestudio.ai/" target="_blank" rel="noopener">Try ACE Studio →</a>
</p>
<div class="status-bar" id="status-bar"></div>
<!-- Output -->
<div id="output-section" style="display:none">
<div class="output-card">
<div style="display:flex;gap:10px;margin-bottom:8px;">
<img id="song-thumb" style="width:48px;height:48px;border-radius:6px;object-fit:cover;display:none;" />
<div style="min-width:0;flex:1;">
<div id="song-title" style="font-size:13px;font-weight:600;margin-bottom:3px;"></div>
<div id="song-tags" style="font-size:11px;color:var(--text-muted);"></div>
</div>
</div>
<div id="waveform"></div>
<div class="playback-controls">
<button class="play-btn" id="play-btn" title="Play / Pause"><svg width="10" height="12" viewBox="0 0 10 12" fill="currentColor"><path d="M0 0l10 6-10 6z"/></svg></button>
<span class="time-display" id="time-display">0:00 / 0:00</span>
<button class="download-btn" id="download-btn">⬇ Download</button>
</div>
</div>
</div>
</div>
<!-- ════ RIGHT: Community feed ════ -->
<div class="col-right">
<div class="feed-header">Community Songs</div>
<div id="feed"></div>
</div>
</div>
<footer>
Powered by <a href="https://github.com/ace-step/ACE-Step" target="_blank">ACE-Step</a> ·
<a href="https://huggingface.co/ACE-Step/acestep-v15-xl-turbo" target="_blank">Model card</a>
</footer>
<script type="module">
// ── ZeroGPU auth ──────────────────────────────────────────────────────────
const ZEROGPU_HEADERS_MSG = "supports-zerogpu-headers";
window.addEventListener("message", (e) => { if (e.data === ZEROGPU_HEADERS_MSG) window.supports_zerogpu_headers = true; });
const _hn = window.location.hostname;
if (_hn.endsWith(".hf.space") || _hn.includes(".dev.")) {
const _o = _hn.includes(".dev.") ? `https://moon-${_hn.split(".")[1]}.dev.spaces.huggingface.tech` : "https://huggingface.co";
window.parent.postMessage(ZEROGPU_HEADERS_MSG, _o);
}
import { Client } from "https://cdn.jsdelivr.net/npm/@gradio/client@1.15.2/dist/index.min.js";
// WaveSurfer removed — using lightweight bar waveform with real audio peaks
// ── DOM ──────────────────────────────────────────────────────────────────
const descInput = document.getElementById("description-input");
const durationSelect = document.getElementById("duration-select");
const instrumentalChk = document.getElementById("instrumental-check");
const communityChk = document.getElementById("community-check");
const generateBtn = document.getElementById("generate-btn");
const statusBar = document.getElementById("status-bar");
const outputSection = document.getElementById("output-section");
const songTitleEl = document.getElementById("song-title");
const songTagsEl = document.getElementById("song-tags");
const playBtn = document.getElementById("play-btn");
const timeDisplay = document.getElementById("time-display");
const downloadBtn = document.getElementById("download-btn");
const feedEl = document.getElementById("feed");
downloadBtn.addEventListener("click", () => {
if (currentSong) generateShareVideo(currentSong, downloadBtn);
});
// ── Main player (plain Audio + bar waveform) ─────────────────────────────
const mainAudio = new Audio();
const waveformEl = document.getElementById("waveform");
function fmt(s) { return `${Math.floor(s/60)}:${Math.floor(s%60).toString().padStart(2,"0")}`; }
function updateTime() {
const c = mainAudio.currentTime || 0, d = mainAudio.duration || 0;
timeDisplay.textContent = `${fmt(c)} / ${fmt(d)}`;
}
function updateMainProgress() {
if (mainAudio.paused && mainAudio.currentTime === 0) return;
const pct = mainAudio.duration ? mainAudio.currentTime / mainAudio.duration : 0;
waveformEl.querySelectorAll(".bar").forEach((b, i, arr) => {
b.style.background = (i / arr.length) <= pct ? "var(--accent)" : "";
});
updateTime();
if (!mainAudio.paused) requestAnimationFrame(updateMainProgress);
}
const playIcon = '<svg width="10" height="12" viewBox="0 0 10 12" fill="currentColor"><path d="M0 0l10 6-10 6z"/></svg>';
const pauseIcon = '<svg width="10" height="12" viewBox="0 0 10 12" fill="currentColor"><rect x="0" y="0" width="3" height="12"/><rect x="7" y="0" width="3" height="12"/></svg>';
mainAudio.addEventListener("play", () => { playBtn.innerHTML = pauseIcon; requestAnimationFrame(updateMainProgress); });
mainAudio.addEventListener("pause", () => { playBtn.innerHTML = playIcon; });
mainAudio.addEventListener("ended", () => { playBtn.innerHTML = playIcon; waveformEl.querySelectorAll(".bar").forEach(b => b.style.background = ""); });
mainAudio.addEventListener("timeupdate", updateTime);
playBtn.addEventListener("click", () => { stopFeedAudio(); mainAudio.paused ? mainAudio.play() : mainAudio.pause(); });
waveformEl.addEventListener("click", (e) => {
const rect = waveformEl.getBoundingClientRect();
const ratio = Math.max(0, Math.min(1, (e.clientX - rect.left) / rect.width));
if (mainAudio.duration) {
stopFeedAudio();
mainAudio.currentTime = mainAudio.duration * ratio;
if (mainAudio.paused) mainAudio.play();
requestAnimationFrame(updateMainProgress);
}
});
// ── Current song state (for video generation) ────────────────────────────
let currentSong = null;
// ── Fast video generation (WebCodecs + MP4 muxer) ─────────────────────
const { Muxer: Mp4MuxerClass, ArrayBufferTarget } = Mp4Muxer;
async function generateShareVideo(song, btn) {
const origHTML = btn.innerHTML;
btn.disabled = true;
btn.textContent = "…";
stopFeedAudio();
mainAudio.pause();
const overlay = document.createElement("div");
overlay.className = "video-overlay";
overlay.innerHTML = `
<div class="label">Generating video…</div>
<div class="pct" id="vid-pct">0%</div>
<div class="bar-track"><div class="bar-fill" id="vid-bar" style="width:0%"></div></div>
`;
document.body.appendChild(overlay);
const pctEl = overlay.querySelector("#vid-pct");
const barEl = overlay.querySelector("#vid-bar");
try {
await document.fonts.ready;
const audioResp = await fetch(song.audio_url);
const audioArrayBuf = await audioResp.arrayBuffer();
const offCtx = new OfflineAudioContext(2, 1, 44100);
const decoded = await offCtx.decodeAudioData(audioArrayBuf);
const sampleRate = decoded.sampleRate;
const numChannels = decoded.numberOfChannels;
const audioLength = decoded.length;
const raw = decoded.getChannelData(0);
const numBars = 60;
const blockSize = Math.floor(raw.length / numBars);
const peaks = [];
for (let i = 0; i < numBars; i++) {
let sum = 0;
for (let j = 0; j < blockSize; j++) sum += Math.abs(raw[i * blockSize + j]);
peaks.push(sum / blockSize);
}
const mx = Math.max(...peaks);
const normPeaks = peaks.map(p => mx > 0 ? p / mx : 0.5);
let thumbImg = null;
if (song.thumb_url) {
thumbImg = new Image();
thumbImg.crossOrigin = "anonymous";
await new Promise(r => { thumbImg.onload = r; thumbImg.onerror = r; thumbImg.src = song.thumb_url; });
}
const W = 1080, H = 1080;
const canvas = document.createElement("canvas");
canvas.width = W; canvas.height = H;
const ctx = canvas.getContext("2d", { willReadFrequently: true });
const duration = decoded.duration;
const FPS = 15;
const totalFrames = Math.ceil(duration * FPS);
function drawFrame(progress) {
ctx.fillStyle = "#111111";
ctx.fillRect(0, 0, W, H);
const topY = 120;
if (thumbImg && thumbImg.naturalWidth > 0) {
ctx.save();
ctx.beginPath();
ctx.roundRect(90, topY, 120, 120, 14);
ctx.clip();
ctx.drawImage(thumbImg, 90, topY, 120, 120);
ctx.restore();
}
const textX = thumbImg && thumbImg.naturalWidth > 0 ? 230 : 90;
ctx.fillStyle = "#ffffff";
ctx.font = "600 36px 'Hanken Grotesk', sans-serif";
ctx.textAlign = "left";
ctx.textBaseline = "middle";
let title = song.title || "Untitled";
while (ctx.measureText(title).width > W - textX - 90 && title.length > 3) title = title.slice(0, -1);
if (title !== song.title) title += "…";
ctx.fillText(title, textX, topY + 45);
ctx.fillStyle = "rgba(255,255,255,0.45)";
ctx.font = "400 22px 'Hanken Grotesk', sans-serif";
let tags = song.tags || "";
while (ctx.measureText(tags).width > W - textX - 90 && tags.length > 3) tags = tags.slice(0, -1);
if (tags !== song.tags) tags += "…";
ctx.fillText(tags, textX, topY + 90);
const waveY = 440, waveH = 220, pad = 80;
const totalW = W - pad * 2;
const gap = 3;
const barW = (totalW - (numBars - 1) * gap) / numBars;
for (let i = 0; i < numBars; i++) {
const x = pad + i * (barW + gap);
const h = Math.max(4, normPeaks[i] * waveH);
ctx.fillStyle = (i / numBars) <= progress ? "rgba(255,255,255,0.92)" : "rgba(255,255,255,0.15)";
ctx.beginPath();
ctx.roundRect(x, waveY + (waveH - h) / 2, barW, h, Math.min(barW / 2, 3));
ctx.fill();
}
ctx.textAlign = "center";
ctx.fillStyle = "rgba(255,255,255,0.40)";
ctx.font = "400 36px 'Hanken Grotesk', sans-serif";
ctx.fillText("Create your own song:", W / 2, 880);
ctx.fillStyle = "rgba(255,255,255,0.55)";
ctx.font = "500 33px 'Hanken Grotesk', sans-serif";
ctx.fillText("hf.co/spaces/victor/ace-step-jam", W / 2, 930);
ctx.textAlign = "left";
}
// ── Encode with WebCodecs + MP4 muxer ──
const target = new ArrayBufferTarget();
const muxer = new Mp4MuxerClass({
target,
video: { codec: "avc", width: W, height: H },
audio: { codec: "aac", sampleRate, numberOfChannels: numChannels },
firstTimestampBehavior: "offset",
fastStart: "in-memory",
});
const audioEncoder = new AudioEncoder({
output: (chunk, meta) => muxer.addAudioChunk(chunk, meta),
error: e => console.error("AudioEncoder error:", e),
});
audioEncoder.configure({ codec: "mp4a.40.2", sampleRate, numberOfChannels: numChannels, bitrate: 128_000 });
const audioChunkSize = 4096;
for (let offset = 0; offset < audioLength; offset += audioChunkSize) {
const len = Math.min(audioChunkSize, audioLength - offset);
const audioData = new AudioData({
format: "f32-planar", sampleRate, numberOfFrames: len, numberOfChannels: numChannels,
timestamp: (offset / sampleRate) * 1_000_000,
data: (() => {
const buf = new Float32Array(len * numChannels);
for (let ch = 0; ch < numChannels; ch++) {
buf.set(decoded.getChannelData(ch).subarray(offset, offset + len), ch * len);
}
return buf;
})(),
});
audioEncoder.encode(audioData);
audioData.close();
}
await audioEncoder.flush();
const videoEncoder = new VideoEncoder({
output: (chunk, meta) => muxer.addVideoChunk(chunk, meta),
error: e => console.error("VideoEncoder error:", e),
});
videoEncoder.configure({ codec: "avc1.640028", width: W, height: H, bitrate: 2_000_000, framerate: FPS });
let frameIdx = 0;
const batchSize = 5;
await new Promise((resolve) => {
function processBatch() {
const end = Math.min(frameIdx + batchSize, totalFrames);
for (; frameIdx < end; frameIdx++) {
const progress = frameIdx / totalFrames;
drawFrame(progress);
const frame = new VideoFrame(canvas, { timestamp: (frameIdx / FPS) * 1_000_000 });
videoEncoder.encode(frame, { keyFrame: frameIdx % (FPS * 2) === 0 });
frame.close();
}
pctEl.textContent = `${Math.round((frameIdx / totalFrames) * 100)}%`;
barEl.style.width = `${Math.round((frameIdx / totalFrames) * 100)}%`;
if (frameIdx < totalFrames) setTimeout(processBatch, 0);
else {
videoEncoder.flush().then(() => {
muxer.finalize();
const blob = new Blob([target.buffer], { type: "video/mp4" });
const url = URL.createObjectURL(blob);
const a = document.createElement("a");
a.href = url;
const safeName = (song.title || "song").replace(/[^a-zA-Z0-9 -]/g, "").trim().replace(/\s+/g, "-") || "song";
a.download = `${safeName}.mp4`;
a.click();
URL.revokeObjectURL(url);
resolve();
});
}
}
processBatch();
});
} catch (e) {
console.error("Video generation failed:", e);
} finally {
overlay.remove();
btn.disabled = false;
btn.innerHTML = origHTML;
}
}
// ── Gradio client ───────────────────────────────────────────────────────
let gradioClient = null;
async function getClient() {
if (!gradioClient) gradioClient = await Client.connect(window.location.origin);
return gradioClient;
}
// ── UI helpers ──────────────────────────────────────────────────────────
function setLoading(on) {
generateBtn.disabled = on;
if (on) { generateBtn.innerHTML = '<span class="spinner"></span> Creating…'; generateBtn.classList.add("loading"); }
else { generateBtn.textContent = "Generate"; generateBtn.classList.remove("loading"); }
if (on) document.getElementById("upsell-ace-studio")?.classList.add("hidden");
}
function setStatus(msg, type = "") {
statusBar.textContent = msg;
statusBar.className = "status-bar" + (type ? ` ${type}` : "");
}
async function loadAudio(dataUrl) {
const res = await fetch(dataUrl);
const blob = await res.blob();
const url = URL.createObjectURL(blob);
// Extract real peaks for bar waveform
const numBars = 80;
try {
const buf = await blob.arrayBuffer();
const ctx = new (window.AudioContext || window.webkitAudioContext)();
const decoded = await ctx.decodeAudioData(buf);
const raw = decoded.getChannelData(0);
const block = Math.floor(raw.length / numBars);
const peaks = [];
for (let i = 0; i < numBars; i++) {
let sum = 0;
for (let j = 0; j < block; j++) sum += Math.abs(raw[i * block + j]);
peaks.push(sum / block);
}
const mx = Math.max(...peaks);
waveformEl.innerHTML = peaks.map(p => {
const h = mx > 0 ? 15 + (p / mx) * 85 : 50;
return `<div class="bar" style="height:${h}%"></div>`;
}).join("");
} catch {
waveformEl.innerHTML = Array.from({length: numBars}, () =>
`<div class="bar" style="height:${15 + Math.random() * 85}%"></div>`
).join("");
}
mainAudio.src = url;
currentSong = { ...currentSong, audio_url: url };
outputSection.style.display = "block";
document.getElementById("upsell-ace-studio")?.classList.add("hidden");
stopFeedAudio();
mainAudio.play();
}
// ── Community feed player ───────────────────────────────────────────────
let feedAudio = null;
let playingCard = null;
function stopFeedAudio() {
if (feedAudio) { feedAudio.pause(); feedAudio = null; }
if (playingCard) {
playingCard.querySelectorAll(".mini-waveform .bar").forEach(b => b.style.background = "");
playingCard.classList.remove("playing");
playingCard.querySelector(".song-play-btn").innerHTML = '<svg width="8" height="10" viewBox="0 0 10 12" fill="currentColor"><path d="M0 0l10 6-10 6z"/></svg>';
playingCard = null;
}
}
function playFeedSong(card, audioUrl, seekRatio) {
// If same card and already playing, just seek (or pause if clicking play btn)
if (playingCard === card && feedAudio) {
if (seekRatio != null) {
feedAudio.currentTime = feedAudio.duration * seekRatio;
if (feedAudio.paused) feedAudio.play();
} else {
// Toggle play/pause (clicked the play button)
if (feedAudio.paused) { feedAudio.play(); }
else { feedAudio.pause(); }
}
return;
}
stopFeedAudio();
mainAudio.pause();
feedAudio = new Audio(audioUrl);
playingCard = card;
card.classList.add("playing");
card.querySelector(".song-play-btn").innerHTML = '<svg width="8" height="10" viewBox="0 0 10 12" fill="currentColor"><rect x="0" y="0" width="3" height="12"/><rect x="7" y="0" width="3" height="12"/></svg>';
feedAudio.play();
if (seekRatio != null) {
feedAudio.addEventListener("loadedmetadata", () => {
feedAudio.currentTime = feedAudio.duration * seekRatio;
}, { once: true });
}
// Update waveform progress during playback
const waveEl = card.querySelector(".mini-waveform");
const bars = waveEl ? waveEl.querySelectorAll(".bar") : [];
function updateProgress() {
if (playingCard !== card || !feedAudio || feedAudio.paused) return;
const pct = feedAudio.currentTime / feedAudio.duration;
bars.forEach((b, i) => {
b.style.background = (i / bars.length) <= pct ? "var(--accent)" : "var(--text-faint)";
});
requestAnimationFrame(updateProgress);
}
if (bars.length) requestAnimationFrame(updateProgress);
feedAudio.addEventListener("ended", () => {
bars.forEach(b => b.style.background = "");
stopFeedAudio();
});
feedAudio.addEventListener("error", () => stopFeedAudio());
feedAudio.addEventListener("pause", () => {
if (playingCard === card) card.querySelector(".song-play-btn").innerHTML = '<svg width="8" height="10" viewBox="0 0 10 12" fill="currentColor"><path d="M0 0l10 6-10 6z"/></svg>';
});
feedAudio.addEventListener("play", () => {
if (playingCard === card) {
card.querySelector(".song-play-btn").innerHTML = '<svg width="8" height="10" viewBox="0 0 10 12" fill="currentColor"><rect x="0" y="0" width="3" height="12"/><rect x="7" y="0" width="3" height="12"/></svg>';
requestAnimationFrame(updateProgress);
}
});
}
// ── Load community feed ─────────────────────────────────────────────────
async function loadFeed() {
try {
const client = await getClient();
const res = await client.predict("/community");
// Gradio JS client may return {data: [...]} or the value directly
const raw = res?.data?.[0] ?? res?.data ?? res;
const songs = JSON.parse(typeof raw === "string" ? raw : JSON.stringify(raw) || "[]");
if (songs.length === 0) {
feedEl.innerHTML = '<div class="feed-empty">No community songs yet.<br>Be the first — check "Share" and generate!</div>';
return;
}
feedEl.innerHTML = "";
for (const song of songs) {
const card = document.createElement("div");
card.className = "song-card";
const dur = song.duration ? `${Math.round(song.duration)}s` : "";
// Generate random mini waveform bars (seeded from title for consistency)
const miniBars = Array.from({length: 80}, () =>
`<div class="bar" style="height:${15 + Math.random() * 85}%"></div>`
).join("");
const thumbHtml = song.thumb_url
? `<img src="${esc(song.thumb_url)}" style="width:24px;height:24px;border-radius:4px;object-fit:cover;flex-shrink:0;" loading="lazy" onerror="this.style.display='none'" />`
: '';
card.innerHTML = `
<div class="song-card-top">
<button class="song-play-btn"><svg width="8" height="10" viewBox="0 0 10 12" fill="currentColor"><path d="M0 0l10 6-10 6z"/></svg></button>
${thumbHtml}
<div class="song-title">${esc(song.title || "Untitled")}</div>
<div class="song-tags">${esc(song.tags || "")}</div>
<div class="song-duration">${dur}</div>
<button class="share-icon-btn" title="Download video"><svg viewBox="0 0 16 16" fill="currentColor"><path d="M3.5 13V8.5h1V12h7V8.5h1V13a.5.5 0 01-.5.5H4a.5.5 0 01-.5-.5zM8 10.25L4.75 7h2V2.5h2.5V7h2L8 10.25z"/></svg></button>
</div>
<div class="mini-waveform">${miniBars}</div>
`;
card.querySelector(".song-play-btn").addEventListener("click", (e) => {
e.stopPropagation();
playFeedSong(card, song.audio_url);
});
card.querySelector(".mini-waveform").addEventListener("click", (e) => {
e.stopPropagation();
const rect = e.currentTarget.getBoundingClientRect();
const ratio = Math.max(0, Math.min(1, (e.clientX - rect.left) / rect.width));
playFeedSong(card, song.audio_url, ratio);
});
card.querySelector(".share-icon-btn").addEventListener("click", (e) => {
e.stopPropagation();
generateShareVideo(song, e.currentTarget);
});
feedEl.appendChild(card);
}
} catch (e) {
console.error("Feed load error:", e);
feedEl.innerHTML = '<div class="feed-empty">Could not load community songs</div>';
}
}
function esc(s) { const d = document.createElement("div"); d.textContent = s; return d.innerHTML; }
// ── Generate ─────────────────────────────────────────────────────────────
generateBtn.addEventListener("click", async () => {
let desc = descInput.value.trim();
if (!desc) { setStatus("Describe the song you want to create", "error"); descInput.focus(); return; }
if (instrumentalChk.checked) desc += " (instrumental, no vocals)";
stopFeedAudio();
setLoading(true);
setStatus("");
// Show animated placeholder on the left, above output
outputSection.style.display = "none";
const placeholder = document.createElement("div");
placeholder.className = "placeholder-card";
placeholder.id = "gen-placeholder";
const bars = Array.from({length: 40}, (_, i) =>
`<div class="bar" style="height:100%;animation-delay:${(i * 0.06).toFixed(2)}s"></div>`
).join("");
placeholder.innerHTML = `
<div class="placeholder-title">${esc(desc.slice(0, 80))}</div>
<div class="placeholder-sub">Composing & generating…</div>
<div class="fake-waveform">${bars}</div>
`;
outputSection.parentNode.insertBefore(placeholder, outputSection);
try {
const client = await getClient();
const job = client.submit("/create", {
description: desc,
audio_duration: parseFloat(durationSelect.value),
seed: -1,
community: communityChk.checked,
});
for await (const msg of job) {
if (msg.type === "status") {
if (msg.queue_size > 0) {
const eta = msg.eta != null ? ` · ~${Math.round(msg.eta)}s` : "";
setStatus(`Queue ${msg.position}/${msg.queue_size}${eta}`);
}
} else if (msg.type === "data") {
const raw = msg.data?.[0];
if (!raw) throw new Error("No data returned");
const result = JSON.parse(raw);
songTitleEl.textContent = result.title || "";
songTagsEl.textContent = result.tags || "";
const thumbEl = document.getElementById("song-thumb");
if (result.thumbnail) { thumbEl.src = result.thumbnail; thumbEl.style.display = "block"; }
else { thumbEl.style.display = "none"; }
currentSong = {
title: result.title || "Untitled",
tags: result.tags || "",
thumb_url: result.thumbnail || null,
};
await loadAudio(result.audio);
// Refresh feed if shared
if (communityChk.checked) loadFeed();
}
}
} catch (err) {
console.error(err);
setStatus(`Error: ${err.message}`, "error");
} finally {
placeholder.remove();
setLoading(false);
}
});
descInput.addEventListener("keydown", (e) => {
if ((e.metaKey || e.ctrlKey) && e.key === "Enter") { e.preventDefault(); generateBtn.click(); }
});
// ── Init ─────────────────────────────────────────────────────────────────
getClient().then(() => loadFeed()).catch(console.error);
</script>
</body>
</html>
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