74 lines
1.9 KiB
JavaScript
74 lines
1.9 KiB
JavaScript
var speechVoices = [];
|
|
var speechVoicesLoaded = false;
|
|
|
|
function refreshSpeechVoices() {
|
|
if (!window.speechSynthesis) return;
|
|
var voices = window.speechSynthesis.getVoices();
|
|
if (voices && voices.length) {
|
|
speechVoices = voices;
|
|
speechVoicesLoaded = true;
|
|
}
|
|
return speechVoices;
|
|
}
|
|
|
|
function pickSpeechVoice(lang) {
|
|
refreshSpeechVoices();
|
|
var target = lang.toLowerCase();
|
|
var exact = speechVoices.find(function(voice) {
|
|
return String(voice.lang || '').toLowerCase() === target;
|
|
});
|
|
if (exact) return exact;
|
|
var prefix = target.split('-')[0];
|
|
return speechVoices.find(function(voice) {
|
|
return String(voice.lang || '').toLowerCase().split('-')[0] === prefix;
|
|
}) || null;
|
|
}
|
|
|
|
function buildSpeechUtterance(text, lang) {
|
|
var utterance = new SpeechSynthesisUtterance(text);
|
|
var langMap = { 'es': 'es-ES', 'en': 'en-US', 'zh': 'zh-CN' };
|
|
utterance.lang = langMap[lang] || lang;
|
|
var voice = pickSpeechVoice(utterance.lang);
|
|
if (voice) utterance.voice = voice;
|
|
utterance.rate = 0.9;
|
|
utterance.pitch = 1;
|
|
return utterance;
|
|
}
|
|
|
|
function doSpeak(text, lang) {
|
|
if (!window.speechSynthesis || !text) return;
|
|
window.speechSynthesis.cancel();
|
|
window.speechSynthesis.speak(buildSpeechUtterance(text, lang));
|
|
}
|
|
|
|
function speakText(text, lang) {
|
|
if (!text || !window.speechSynthesis) return;
|
|
refreshSpeechVoices();
|
|
if (speechVoicesLoaded) {
|
|
doSpeak(text, lang);
|
|
return;
|
|
}
|
|
|
|
var attempts = 0;
|
|
var timer = setInterval(function() {
|
|
attempts++;
|
|
refreshSpeechVoices();
|
|
if (speechVoicesLoaded || attempts >= 8) {
|
|
clearInterval(timer);
|
|
doSpeak(text, lang);
|
|
}
|
|
}, 80);
|
|
window.speechSynthesis.getVoices();
|
|
}
|
|
|
|
function initSpeech() {
|
|
if (!window.speechSynthesis) return;
|
|
refreshSpeechVoices();
|
|
window.speechSynthesis.onvoiceschanged = function() {
|
|
refreshSpeechVoices();
|
|
};
|
|
}
|
|
|
|
if (document.readyState === 'complete') initSpeech();
|
|
else document.addEventListener('DOMContentLoaded', initSpeech);
|