save(); renderTracks(); toast(track.charAt(0).toUpperCase() + track.slice(1) + ' regenerated.'); })
.catch(function (e) { toast(e.message, 5000); busy(btn, false); });
}
// ---------------------------------------------------------------- VOICE
function lyricLines() {
return String(S.lyrics || '').split(/\r?\n/).map(function (l) { return l.trim(); })
.filter(function (l) { return l && !/^\[[^\]]*\]$/.test(l) && !/^\(.*\)$/.test(l); }).slice(0, 24)
.map(function (l) { return l.slice(0, 160); });
}
function barSec() { return 4 * 60 / S.bpm; }
function renderLines() {
var lines = lyricLines(), bpl = +$('#ss-bpl').value, slot = bpl * barSec();
var stale = S.voxClips && S.voxLines && S.voxLines.join('\n') !== lines.join('\n');
$('#ss-lines').innerHTML = lines.length ? lines.map(function (l, i) {
var c = S.voxClips && !stale ? S.voxClips[i] : null;
var cls = c ? (c.dur > slot ? 'warn' : 'ok') : '';
return '' + esc(l) + (c ? '' + c.dur.toFixed(1) + 's' + (c.dur > slot ? ' — longer than ' + bpl + ' bar' + (bpl > 1 ? 's' : '') + ', try speed up' : '') + '' : '') + '';
}).join('') : 'No lyrics yet — write a song on the Write tab (or type lyrics there).';
if (stale) $('#ss-vstatus').textContent = 'Lyrics changed since the last render — render again.';
}
$('#ss-vspeed').addEventListener('input', function () { $('#ss-vspeed-v').textContent = (+this.value).toFixed(2); });
$('#ss-bpl').addEventListener('change', renderLines);
$('#ss-vvol').addEventListener('input', function () { if (E) E.voxBus.volume.value = +this.value; });
function b64ToBuf(b64) { var bin = atob(b64), u = new Uint8Array(bin.length); for (var i = 0; i < bin.length; i++) u[i] = bin.charCodeAt(i); return u.buffer; }
$('#ss-render').addEventListener('click', function () {
var btn = this, lines = lyricLines();
if (!lines.length) { toast('No lyric lines to voice yet.'); return; }
var st = $('#ss-vstatus');
busy(btn, true); st.textContent = 'Rendering ' + lines.length + ' lines with ' + $('#ss-voice').value + '… this takes about ' + Math.max(15, Math.round(lines.length * 5 + 6)) + 's.';
unlock().catch(function () {}).then(function () {
return api('POST', '/api/ss/voice', { lines: lines, voice: $('#ss-voice').value, speed: +$('#ss-vspeed').value });
}).then(function (start) {
// Poll the background job (about 5s per line on the server).
return new Promise(function (resolve, reject) {
var tries = 0;
(function poll() {
if (++tries > 200) return reject(new Error('Voice took too long. Try fewer lines.'));
api('GET', '/api/ss/voice/' + encodeURIComponent(start.job)).then(function (j) {
if (j.status === 'done') return resolve(j);
st.textContent = 'Voicing line ' + Math.min(j.total, j.done + 1) + ' of ' + j.total + '…';
setTimeout(poll, 2000);
}, reject);
})();
});
}).then(function (j) {
buildEngine();
var ctx = Tone.getContext().rawContext;
var clips = [];
return Promise.all((j.clips || []).map(function (c) {
return new Promise(function (res) {
ctx.decodeAudioData(b64ToBuf(c.b64), function (buf) { clips[c.i] = { dur: buf.duration, buf: new Tone.ToneAudioBuffer(buf) }; res(); }, function () { res(); });
});
})).then(function () {
S.voxClips = clips; S.voxLines = lines;
var n = clips.filter(Boolean).length;
st.textContent = n + ' of ' + lines.length + ' lines voiced. Press Play with beat.';
renderLines();
});
}).catch(function (e) { st.textContent = e.message; })
.then(function () { busy(btn, false); });
});
function voxPlan() {
var intro = +$('#ss-intro').value, bpl = +$('#ss-bpl').value, out = [];
(S.voxClips || []).forEach(function (c, i) { if (c) out.push({ bar: intro + i * bpl, clip: c }); });
return out;
}
function scheduleVox() {
(E.players || []).forEach(function (p) { try { p.unsync(); p.dispose(); } catch (e) {} });
E.players = [];
if (!$('#ss-vox-on').checked) return;
voxPlan().forEach(function (v) {
var p = new Tone.Player(v.clip.buf).connect(E.voxBus);
p.sync().start(v.bar + ':0:0');
E.players.push(p);
});
}
function autoBars() {
var plan = voxPlan();
if (!plan.length || !$('#ss-vox-on').checked) return 8;
var last = plan[plan.length - 1], bs = barSec();
return Math.min(64, last.bar + Math.ceil(last.clip.dur / bs) + 1);
}
// ---------------------------------------------------------------- RECORD + SAVE
var recBlob = null, recUrl = null;
$('#ss-rec').addEventListener('click', function () {
var btn = this;
unlock().then(function () {
if (!E.recorder) { toast('This browser cannot record audio. Try Safari 14.5+ or Chrome.'); retu