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speaker-helper.js
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speaker-helper.js
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let speaker;
let spokenResponseLength = 0;
let speakerOpenTime = 0;
let speakerTimer;
const init = (spkr) => {
speaker = spkr;
};
const open = () => {
clearTimeout(speakerTimer);
spokenResponseLength = 0;
speakerOpenTime = new Date().getTime();
};
const update = (data) => {
if (!speaker) return;
const now = new Date().getTime();
speaker.write(data);
// kill the speaker after enough data has been sent to it and then let it flush out
spokenResponseLength += data.length;
const audioTime = spokenResponseLength / (24000 * 16 / 8) * 1000;
clearTimeout(speakerTimer);
speakerTimer = setTimeout(() => {
speaker.end();
}, audioTime - Math.max(0, now - speakerOpenTime));
};
module.exports = {
init,
open,
update,
};