js-tts-wrapper
Version:
A JavaScript/TypeScript library that provides a unified API for working with multiple cloud-based Text-to-Speech (TTS) services
232 lines (231 loc) • 8.01 kB
JavaScript
import { AbstractTTSClient } from "../core/abstract-tts.js";
import * as SSMLUtils from "../core/ssml-utils.js";
import * as SpeechMarkdown from "../markdown/converter.js";
import { getFetch } from "../utils/fetch-utils.js";
import { toIso639_3, toLanguageDisplay } from "../utils/language-utils.js";
const fetch = getFetch();
const AUDIO_TAG_MODELS = ["s2-pro"];
const AUDIO_TAG_REGEX = /\[[^\]]+\]/g;
export class FishAudioTTSClient extends AbstractTTSClient {
constructor(credentials = {}) {
super(credentials);
Object.defineProperty(this, "apiKey", {
enumerable: true,
configurable: true,
writable: true,
value: void 0
});
Object.defineProperty(this, "baseUrl", {
enumerable: true,
configurable: true,
writable: true,
value: void 0
});
Object.defineProperty(this, "model", {
enumerable: true,
configurable: true,
writable: true,
value: void 0
});
this.apiKey = credentials.apiKey || process.env.FISH_AUDIO_API_KEY || "";
this.baseUrl = credentials.baseURL || "https://api.fish.audio";
this.model = credentials.model || "s2-pro";
this.voiceId = "";
this._models = [
{ id: "s2-pro", features: ["streaming", "audio-tags", "inline-voice-cloning"] },
];
this.sampleRate = 44100;
this.applyCredentialProperties(credentials);
}
applyCredentialProperties(credentials) {
const rawProps = credentials.properties ??
credentials.propertiesJson ??
credentials.propertiesJSON;
if (rawProps) {
let parsed = null;
if (typeof rawProps === "string") {
try {
parsed = JSON.parse(rawProps);
}
catch {
/* ignore */
}
}
else if (typeof rawProps === "object") {
parsed = rawProps;
}
if (parsed) {
for (const [key, value] of Object.entries(parsed)) {
this.setProperty(key, value);
}
}
}
}
processAudioTags(text) {
if (AUDIO_TAG_MODELS.includes(this.model)) {
return text;
}
if (!AUDIO_TAG_REGEX.test(text))
return text;
return text.replace(AUDIO_TAG_REGEX, "").replace(/\s+/g, " ").trim();
}
async prepareText(text, options) {
let processedText = text;
if (options?.useSpeechMarkdown && SpeechMarkdown.isSpeechMarkdown(processedText)) {
const ssml = await SpeechMarkdown.toSSML(processedText, "w3c");
processedText = SSMLUtils.stripSSML(ssml);
}
if (SSMLUtils.isSSML(processedText)) {
processedText = SSMLUtils.stripSSML(processedText);
}
processedText = this.processAudioTags(processedText);
return processedText;
}
setModel(model) {
this.model = model;
}
setVoice(voiceId) {
this.voiceId = voiceId;
}
getProperty(property) {
switch (property) {
case "model":
return this.model;
case "voice":
return this.voiceId;
default:
return super.getProperty(property);
}
}
setProperty(property, value) {
switch (property) {
case "model":
this.setModel(value);
break;
case "voice":
this.setVoice(value);
break;
default:
super.setProperty(property, value);
break;
}
}
async checkCredentials() {
if (!this.apiKey)
return false;
try {
const response = await fetch(`${this.baseUrl}/v1/model`, {
method: "GET",
headers: {
Authorization: `Bearer ${this.apiKey}`,
},
});
return response.ok;
}
catch {
return false;
}
}
getRequiredCredentials() {
return ["apiKey"];
}
async _getVoices() {
try {
const response = await fetch(`${this.baseUrl}/v1/model`, {
method: "GET",
headers: {
Authorization: `Bearer ${this.apiKey}`,
},
});
if (!response.ok)
return [];
const data = await response.json();
return Array.isArray(data) ? data : [];
}
catch {
return [];
}
}
async _mapVoicesToUnified(rawVoices) {
return rawVoices
.filter((v) => v.type === "tts" || v.task === "tts")
.map((voice) => ({
id: voice._id || voice.id,
name: voice.title || voice.name || "Unknown",
gender: (voice.gender || "Unknown"),
languageCodes: voice.languages
? voice.languages.map((lang) => ({
bcp47: lang,
iso639_3: toIso639_3(lang),
display: toLanguageDisplay(lang),
}))
: [{ bcp47: "en-US", iso639_3: "eng", display: "English (US)" }],
provider: "fishaudio",
}));
}
async synthToBytes(text, options = {}) {
const preparedText = await this.prepareText(text, options);
const modelId = options.model || this.model;
const voiceId = options.voice || this.voiceId;
const body = {
...options.providerOptions,
text: preparedText,
};
if (voiceId) {
body.reference_id = voiceId;
}
const response = await fetch(`${this.baseUrl}/v1/tts`, {
method: "POST",
headers: {
"Content-Type": "application/json",
Authorization: `Bearer ${this.apiKey}`,
model: modelId,
},
body: JSON.stringify(body),
});
if (!response.ok) {
const errorText = await response.text();
throw new Error(`Fish Audio API error: ${response.status} ${response.statusText} - ${errorText}`);
}
const arrayBuffer = await response.arrayBuffer();
this._createEstimatedWordTimings(preparedText);
return new Uint8Array(arrayBuffer);
}
async synthToBytestream(text, options = {}) {
const preparedText = await this.prepareText(text, options);
const modelId = options.model || this.model;
const voiceId = options.voice || this.voiceId;
const body = {
...options.providerOptions,
text: preparedText,
};
if (voiceId) {
body.reference_id = voiceId;
}
const response = await fetch(`${this.baseUrl}/v1/tts`, {
method: "POST",
headers: {
"Content-Type": "application/json",
Authorization: `Bearer ${this.apiKey}`,
model: modelId,
},
body: JSON.stringify(body),
});
if (!response.ok) {
const errorText = await response.text();
throw new Error(`Fish Audio API error: ${response.status} ${response.statusText} - ${errorText}`);
}
if (!response.body) {
const arrayBuffer = await response.arrayBuffer();
const audioData = new Uint8Array(arrayBuffer);
const readableStream = new ReadableStream({
start(controller) {
controller.enqueue(audioData);
controller.close();
},
});
return { audioStream: readableStream, wordBoundaries: [] };
}
return { audioStream: response.body, wordBoundaries: [] };
}
}