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polly.js
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polly.js
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// License MIT, Author Special Agent Squeaky (specialagentsqueaky.com), Last updated 2020-11-25
const AWS = require("aws-sdk");
// Add your AWS IAM user credentials here
const AWS_IAM_ID = "";
const AWS_IAM_SECRET = "";
function getQueryParameter(event, key) {
const value = event["queryStringParameters"] && event["queryStringParameters"][key];
if (!value) {
throw new Error("Could not get the query parameter \"" + key + "\".");
}
return value;
}
async function createAudioData(voiceID, text) {
return new Promise((resolve, reject) => {
const credentials = new AWS.Credentials(AWS_IAM_ID, AWS_IAM_SECRET);
AWS.config.update({
credentials,
});
const pollyParams = {
OutputFormat: "mp3",
Text: text,
VoiceId: voiceID,
};
let polly = new AWS.Polly();
polly.synthesizeSpeech(pollyParams, function(error, data) {
if (error) {
reject(error);
return;
}
let audioStream = data.AudioStream;
resolve(audioStream);
});
});
}
exports.handler = async(event) => {
try {
const qpVoiceID = getQueryParameter(event, "voice");
const qpText = getQueryParameter(event, "text");
const audioData = await createAudioData(qpVoiceID, qpText);
const response = {
statusCode: 200,
headers: {
"content-type": "audio/mpeg",
},
body: audioData.toString("base64"),
isBase64Encoded: true,
};
return response;
} catch (error) {
console.error("error", error);
const response = {
statusCode: 500,
body: error.toString(),
};
return response;
}
};