ace-step-jam / index.html
victor's picture
victor HF Staff
feat: add small ACE Studio upsell link under compose box
a6d1165
<!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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31.855-1.169 47.79l-.324 68.059c-.121 34.375 1.189 67.59-24.984 94.135-36.711 37.23-117.356 35.785-141.56-15.145-4.124-8.675-4.715-18.09-4.655-27.495a47.1 47.1 0 0 1 10.969-26.95c12.532-14.62 37.444-18.11 52.064-4.965a27.12 27.12 0 0 1 8.988 19.43c.401 14.01-6.404 17.145-14.45 25.775-12.126 13.465 3.685 27.82 18.108 25.8 34.753-4.875 30.803-53.81 30.832-79.675l.022-51.27-.083-45.14c-.062-14.645 1.538-35.665-6.982-47.905-2.659-3.745-10.142-8.515-10.314-13.345m195.843-9.245c12.179.095 24.785 2.39 33.048 12.225 8.54 10.165 15.095 43.36 18.885 57.315a4784 4784 0 0 0 33.182 114.901c4.95 16.344 9.74 35.189 16.79 50.634 2.01 4.405 6.36 8.5 10.52 11.01 10.66-9.845 9.61-34.86 9.84-48.38.27-16.265.11-32.69.37-48.98.38-21.295.57-42.59.58-63.89.14-16.01 1.85-34.3-1.62-50.005-1.39-6.29-3.63-11.715-8.4-16.22-1.79-1.68-3.86-3.26-5.09-5.405-.93-1.605-1.16-3.165-.56-4.955.73-2.195 2.16-3.65 4.24-4.62 2.31-1.075 4.81-1.395 7.32-1.61 9.48-.82 64.09-1.63 70.82 1.13 3.59 1.476 7.11 3.465 9.04 6.985 4.07 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6.31 8.04 2.11 11.404-22.14 8.28-29.52 8.205l-35.05-.27-61.452-.04c-7.77.02-15.615.57-23.372.37-2.238-.06-6.194.01-8.107-1.214-1.381-.885-2.384-2.471-2.7-4.071-.959-4.86 5.28-9.225 7.673-12.98 6.088-9.545.193-28.165-2.33-38.38-.971-3.935-2.246-9.53-6.087-11.63-6.617-3.62-51.072-4.499-59.105-2.185-2.513.725-3.717 2.395-4.872 4.63-4.31 8.35-10.534 31.55-9.323 40.77.252 1.92 1.094 3.74 2.121 5.365 2.362 3.735 7.774 6.501 8.939 10.775.49 1.8.036 3.635-.991 5.16-1.309 1.939-2.962 2.64-5.191 3.11-7.781 1.635-27.562.18-36.554.245-6.542.045-13.637 1.1-20.092.515-2.462-.225-5.183-.915-7.202-2.4-1.51-1.11-2.693-2.71-2.759-4.645-.174-5.1 6.625-9.225 9.585-12.93 3.854-4.82 6.477-10.545 8.774-16.23 13.148-32.555 23.034-66.76 34.557-99.94l20.711-60.995c3.423-10.25 7.955-21.985 9.888-32.605 3.471-8.28-9.124-18.955-9.128-22.945-.009-9.225 38.877-11.295 43.682-11.575m-9.769 79.41c-2.886 3.83-24.901 73.496-24.944 78.31 3.007 2.44 15.374 1.64 19.785 1.575 4.813 0 21.568 1.005 24.674-1.604.802-.676.618-3.005.565-3.965-.305-5.51-15.823-71.054-17.593-72.785-.732-.715-1.577-1.106-2.487-1.531"/></svg>
<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 &amp; 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 &amp; longer songs?
<a href="https://acestudio.ai/" target="_blank" rel="noopener">Try ACE Studio β†’</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> Β·
<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-${_hn.split(".")[1]}.dev.spaces.huggingface.tech` : "https://huggingface.co";
window.parent.postMessage(ZEROGPU_HEADERS_MSG, _o);
}
import { Client } from "https://cdn.jsdelivr.net/npm/@gradio/client@1.15.2/dist/index.min.js";
// WaveSurfer removed β€” using lightweight bar waveform with real audio peaks
// ── DOM ──────────────────────────────────────────────────────────────────
const descInput = document.getElementById("description-input");
const durationSelect = document.getElementById("duration-select");
const instrumentalChk = document.getElementById("instrumental-check");
const communityChk = document.getElementById("community-check");
const generateBtn = document.getElementById("generate-btn");
const statusBar = document.getElementById("status-bar");
const outputSection = document.getElementById("output-section");
const songTitleEl = document.getElementById("song-title");
const songTagsEl = document.getElementById("song-tags");
const playBtn = document.getElementById("play-btn");
const timeDisplay = document.getElementById("time-display");
const downloadBtn = document.getElementById("download-btn");
const feedEl = document.getElementById("feed");
downloadBtn.addEventListener("click", () => {
if (currentSong) generateShareVideo(currentSong, downloadBtn);
});
// ── Main player (plain Audio + bar waveform) ─────────────────────────────
const mainAudio = new Audio();
const waveformEl = document.getElementById("waveform");
function fmt(s) { return `${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 β€” 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">${esc(desc.slice(0, 80))}</div>
<div class="placeholder-sub">Composing &amp; generating…</div>
<div class="fake-waveform">${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 ? ` Β· ~${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>