71 lines
2.2 KiB
JavaScript
71 lines
2.2 KiB
JavaScript
// ---------- Слоги ----------
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function syllabifyIT(w) {
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const isV = c => 'aeiouàèéìíòóùú'.includes(c.toLowerCase());
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const onset = s => /^(str|scr|spr|spl|bl|br|cl|cr|dr|fl|fr|gl|gn|gr|pl|pr|sc|sk|sl|sm|sn|sp|sq|sr|st|sv|tr|ch|gh)/i.test(s);
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let out = [], syl = '', i = 0;
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while (i < w.length) {
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syl += w[i];
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if (isV(w[i])) {
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let j = i + 1, cons = '';
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while (j < w.length && !isV(w[j])) cons += w[j++];
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if (j < w.length && cons.length > 0) {
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const k = cons.length === 1 ? 0 : onset(cons.slice(1)) ? 1 : Math.floor(cons.length / 2);
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syl += cons.slice(0, k);
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out.push(syl); syl = '';
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i += k;
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}
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}
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i++;
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}
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if (syl) out.push(syl);
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return out.join('-');
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}
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function syllabifyPhrase(text) {
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return text.split(/\s+/).map(syllabifyIT).join(' ');
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}
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// ---------- AudioContext для проигрывания слогов ----------
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let _audioCtx = null;
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async function getAudioCtx() {
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if (!_audioCtx) _audioCtx = new (window.AudioContext || window.webkitAudioContext)();
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if (_audioCtx.state === 'suspended') await _audioCtx.resume();
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return _audioCtx;
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}
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let _currentBlob = null;
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let _currentSylBuf = null;
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async function playSyllable(sylIdx, total) {
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if (!_currentBlob) return;
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try {
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const ctx = await getAudioCtx();
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if (!_currentSylBuf) {
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const ab = await _currentBlob.arrayBuffer();
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_currentSylBuf = await ctx.decodeAudioData(ab);
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}
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const dur = _currentSylBuf.duration;
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const start = (dur / total) * sylIdx;
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const len = dur / total;
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const src = ctx.createBufferSource();
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src.buffer = _currentSylBuf;
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src.connect(ctx.destination);
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src.start(0, start, len);
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} catch(e) {}
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}
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// Проигрывание слога из истории (загрузка blob из IndexedDB)
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async function playHistorySyl(recId, sylIdx, total) {
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try {
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const db = await openRecDB();
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const tx = db.transaction('recs', 'readonly');
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const store = tx.objectStore('recs');
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const rec = await new Promise(r => { const req = store.get(recId); req.onsuccess = () => r(req.result); });
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if (!rec?.blob) return;
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_currentBlob = rec.blob;
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_currentSylBuf = null;
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await playSyllable(sylIdx, total);
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} catch(e) {}
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}
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