42 lines
1.3 KiB
JavaScript
42 lines
1.3 KiB
JavaScript
import {TtsSession} from '@mintplex-labs/piper-tts-web';
|
|
|
|
const VOICE_ID = 'sv_SE-nst-medium';
|
|
const ASSET_ROOT = '/tts/piper-wasm-v1';
|
|
let sessionPromise;
|
|
let inferenceQueue = Promise.resolve();
|
|
|
|
async function getSession(onProgress) {
|
|
if (!sessionPromise) {
|
|
sessionPromise = TtsSession.create({
|
|
voiceId: VOICE_ID,
|
|
progress: onProgress,
|
|
wasmPaths: {
|
|
onnxWasm: `${ASSET_ROOT}/onnx/`,
|
|
piperData: `${ASSET_ROOT}/piper/piper_phonemize.data`,
|
|
piperWasm: `${ASSET_ROOT}/piper/piper_phonemize.wasm`,
|
|
},
|
|
}).catch(error => {
|
|
sessionPromise = null;
|
|
throw error;
|
|
});
|
|
}
|
|
return sessionPromise;
|
|
}
|
|
|
|
async function synthesizeMessage(event) {
|
|
const {id, text} = event.data || {};
|
|
if (!Number.isSafeInteger(id) || typeof text !== 'string') return;
|
|
try {
|
|
const session = await getSession(progress => self.postMessage({id, type: 'progress', progress}));
|
|
const blob = await session.predict(text);
|
|
const audio = await blob.arrayBuffer();
|
|
self.postMessage({id, type: 'audio', audio}, [audio]);
|
|
} catch (error) {
|
|
self.postMessage({id, type: 'error', error: String(error?.message || error)});
|
|
}
|
|
}
|
|
|
|
self.addEventListener('message', event => {
|
|
inferenceQueue = inferenceQueue.then(() => synthesizeMessage(event));
|
|
});
|