ttsreader
Version:
Text to Speech wrapper, player and helpers for the web-speech-api speech synthesis
177 lines (161 loc) • 6.8 kB
HTML
<html lang="en">
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta charset="UTF-8">
<title>Test TTSReader Engine</title>
<style>
.highlight {
background-color: yellow;
}
</style>
</head>
<body>
<input type="text" placeholder="server token" id="tokenInput"/>
<br/>
<select id="voice_selector"></select>
<div>
<button id="toggle_speech_btn" onclick="toggleSpeak()">Speak</button>
</div>
<br/><br/>
<ul id="voicesList"></ul>
<main>
<p>1. Some text to read. </p>
<p>2. Hello!</p>
<p>3. Ronen. </p>
<p>3.1 some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. some very long text to test google termination bug. </p>
<p>4. Some more text to read. </p>
<p>5. Some text to read. </p>
<p>6. Some text to read. </p>
<p>7. Some text to read. </p>
<p>8. Some text to read. </p>
<p>9. Some text to read. </p>
<p>10. Some text to read. </p>
</main>
<!--<script src="https://unpkg.com/ttsreader@1.0.27/build/bundle.min.js"></script>-->
<script src="build/bundle.js"></script>
<script>
function populateVoices(voices) {
console.log('init tts with voices: ', voices);
let el = document.querySelector('#voice_selector');
if (el) {
for (const voice of voices) {
let option = document.createElement("option");
option.innerHTML = voice.name + ", " + voice.lang + ", " + voice.voiceURI;
option.value = voice.voiceURI;
el.append(option);
}
}
document.getElementById('voice_selector').value = tts.getVoiceURI();
}
function onStart (ev) {
console.log('tts started, at: ', new Date());
updateUiByState();
}
function onEnd(ev) {
console.log('tts done, with ev = ', ev);
if (shouldSpeak) {
caretProgress();
if (currentEl) {
let txt = currentEl.innerText;
let bufferArray = [];
let savedCurrentEl = currentEl;
// We'll populate the next 5 elements in the buffer, then we'll set currentElement to the current one.
for (let i = 0; i < 5; i++) {
caretProgress();
if (currentEl) {
bufferArray.push(currentEl.innerText);
}
}
currentEl = savedCurrentEl;
speakOutText(txt, bufferArray);
} else {
speak(); // ie start from beginning
}
}
}
function speakOutText(txt, bufferArray) {
// Previously: tts.speakOut(txt);
// New - try the server approach:
let bufferUtts = [];
for (let i = 0; i < bufferArray.length; i++) {
bufferUtts.push({text: bufferArray[i], voiceURI: document.getElementById("voice_selector").value, rate: 1.0});
}
tts.speakAndBuffer({text: txt, voiceURI: document.getElementById("voice_selector").value, rate: 1.0},
bufferUtts,
document.querySelector("#tokenInput").value);
}
let tts = wsGlobals.TtsEngine;
let shouldSpeak = false;
let currentEl;
//console.log(tts);
tts.init({
onInit: (voices) => {
populateVoices(voices);
},
onStart: () => {
onStart();
},
onDone: () => {
onEnd();
}
}, true);
function speak() {
shouldSpeak = true;
if (!currentEl) {
caretProgress();
}
tts.setVoiceByUri(document.getElementById("voice_selector").value);
let txt = currentEl.innerText;
let bufferArray = [];
let savedCurrentEl = currentEl;
// We'll populate the next 5 elements in the buffer, then we'll set currentElement to the current one.
for (let i = 0; i < 5; i++) {
caretProgress();
if (currentEl) {
bufferArray.push(currentEl.innerText);
}
}
currentEl = savedCurrentEl;
speakOutText(txt, bufferArray);
document.getElementById('toggle_speech_btn').innerHTML = "Stop";
}
function stop() {
shouldSpeak = false;
tts.stop();
updateUiByState();
document.getElementById('toggle_speech_btn').innerHTML = "Speak";
}
function toggleSpeak() {
if (shouldSpeak) {
stop();
} else {
speak();
}
}
function caretProgress() {
if (!currentEl) {
currentEl = document.querySelector('main');
currentEl = currentEl.firstElementChild;
} else {
if (currentEl instanceof Element)
currentEl = currentEl.nextElementSibling;
}
}
function updateUiByState() {
if (shouldSpeak) {
if (currentEl) {
document.querySelectorAll("p").forEach((el) => {
if (el!=currentEl) {
el.classList.remove("highlight");
} else {
currentEl.classList.add("highlight");
}
});
currentEl.scrollIntoView();
}
}
}
</script>
</body>
</html>