export default async function main(args) {
const { VoiceID: inputVoiceID, Text, ElevenLabsAPIKey } = args.inputVars
let VoiceID = inputVoiceID;
try {
if (!ElevenLabsAPIKey) {
return {
outputVars: {
error: `Need an ElevenLabs API Key`
},
next: {
path: 'error'
},
trace: [
{
type: 'debug',
payload: {
message: `Need an ElevenLabs API Key`
}
}
],
}
}
if (!Text) {
return {
outputVars: {
error: `Need a text to convert`
},
next: {
path: 'error'
},
trace: [
{
type: 'debug',
payload: {
message: `Need a text to convert`
}
}
],
}
}
if (!VoiceID) {
VoiceID = '21m00Tcm4TlvDq8ikWAM'
}
const response = await fetch(`https://api.elevenlabs.io/v1/text-to-speech/${VoiceID}`,
{
method: 'POST',
headers: {
'Content-Type': 'application/json',
accept: 'audio/mpeg',
'xi-api-key': `${ElevenLabsAPIKey}`
},
body: JSON.stringify({
text: Text,
model_id: 'eleven_multilingual_v2'
})
},
{ parseType: 'arrayBuffer' }
);
if (!response.ok) {
return {
next: {
path: 'error'
},
trace: [
{
type: 'debug',
payload: {
message: `Error with ElevenLabs API`
}
}
],
}
}
let uint8Array = new Uint8Array(response.arrayBuffer);
let binaryString = Array.prototype.map.call(uint8Array, function (byte) {
return String.fromCharCode(byte);
}).join('');
function toBase64(input) {
const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
let str = '';
let padding = (input.length % 3);
for (let i = 0; i < input.length; i += 3) {
let a = input.charCodeAt(i);
let b = input.charCodeAt(i + 1);
let c = input.charCodeAt(i + 2);
str += chars[a >> 2];
str += chars[((a & 3) << 4) | (b >> 4)];
str += chars[((b & 15) << 2) | (c >> 6)];
str += chars[c & 63];
}
return padding ? str.slice(0, padding - 3) + '==='.substring(padding) : str;
}
let base64Audio = toBase64(binaryString);
const audioData = `data:audio/mpeg;base64,${base64Audio}`
return {
outputVars: {
audioDataURI: audioData
},
next: {
path: 'success'
},
trace: [
{
type: 'debug',
payload: {
message: `Successfully converted the text`
}
},
{
type: 'audio',
payload: {
src: audioData
}
}
],
}
} catch (error) {
return {
outputVars: {
error: error
},
next: {
path: 'error'
},
trace: [
{
type: 'debug',
payload: {
message: error
}
}
],
}
}
}
