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index.js
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index.js
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// Path to google app credentials
process.env.GOOGLE_APPLICATION_CREDENTIALS = __dirname+"/google-credentials.json";
// Default Lang
// Available Snips language: en, fr, it, es, de, ja, ko
var defaultLang = "fr";
// pico2wave Voice Config
// Available Voices: en-US, en-GB, de-DE, es-ES, fr-FR, it-IT
var voicePico = [];
voicePico['en'] = "en-GB";
voicePico['fr'] = "fr-FR";
voicePico['it'] = "it-IT";
voicePico['es'] = "es-ES";
voicePico['de'] = "de-DE";
voicePico['ja'] = "en-US";
voicePico['ko'] = "en-US";
// Google Voice Config
// Available Voices: node listVoices.js
var voiceGoogle = [];
voiceGoogle['en'] = {voiceName: "en-US-Standard-B", voiceType: "MALE"};
voiceGoogle['fr'] = {voiceName: "fr-CA-Standard-D", voiceType: "MALE"};
voiceGoogle['it'] = {voiceName: "it-IT-Standard-A", voiceType: "FEMALE"};
voiceGoogle['es'] = {voiceName: "es-ES-Standard-A", voiceType: "FEMALE"};
voiceGoogle['de'] = {voiceName: "de-DE-Standard-B", voiceType: "MALE"};
voiceGoogle['ja'] = {voiceName: "ja-JP-Standard-A", voiceType: "FEMALE"};
voiceGoogle['ko'] = {voiceName: "ko-KR-Standard-C", voiceType: "MALE"};
// Timeout before offline Speak for Cloud TTS call (in ms)
var timeoutCloudTTS = 2500;
const mqtt = require('mqtt');
const Lame = require("node-lame").Lame;
const textToSpeech = require('@google-cloud/text-to-speech');
const fs = require('fs');
const toml = require('toml');
const snipsConfig = toml.parse(fs.readFileSync('/etc/snips.toml', 'utf-8'));
const exec = require('child_process').exec;
var mqttHostname = "mqtt://localhost";
var mqttOptions = {};
if( snipsConfig['snips-common']['mqtt'] ) mqttHostname = "mqtt://"+snipsConfig['snips-common']['mqtt'];
if( snipsConfig['snips-common']['mqtt_username'] ) mqttOptions['username'] = snipsConfig['snips-common']['mqtt_username'];
if( snipsConfig['snips-common']['mqtt_password'] ) mqttOptions['password'] = snipsConfig['snips-common']['mqtt_password'];
var clientMQTT = mqtt.connect(mqttHostname, mqttOptions);
var audioEncoding = 'MP3';
exec('lame --help', (error, stdout, stderr) => {
if(error) {
console.log('[Bobby Snips TTS Log] LAME not found');
audioEncoding = 'LINEAR16';
}
});
clientMQTT.on('connect', function () {
console.log("[Bobby Snips TTS Log] Connected to MQTT broker " + mqttHostname);
clientMQTT.subscribe('hermes/tts/say');
clientMQTT.subscribe('hermes/audioServer/+/playFinished');
});
clientMQTT.on('message', function (topic, message) {
var regExpFinished = /hermes\/audioServer\/.*\/playFinished/g;
if( topic == 'hermes/tts/say' ){
speakGoogle( JSON.parse(message) );
}
else if( regExpFinished.test(topic) ){
sayFinished( JSON.parse(message) );
}
});
var waitFinished = [];
function sayFinished( jsonMsg ) {
if( waitFinished[jsonMsg.id] ){
clientMQTT.publish("hermes/tts/sayFinished", '{"id":"'+waitFinished[jsonMsg.id].id+'", "sessionId":"'+waitFinished[jsonMsg.id].sessionId+'"}');
waitFinished.splice(jsonMsg.id, 1);
}
}
function speakGoogle( jsonMsg ) {
var debut = Date.now();
var hash = Math.random().toString(36).substr(2);
if( jsonMsg.lang ){
var voiceName = voiceGoogle[jsonMsg.lang.substr(0,2)].voiceName;
var voiceType = voiceGoogle[jsonMsg.lang.substr(0,2)].voiceType;
}
else{
var voiceName = voiceGoogle[defaultLang].voiceName;
var voiceType = voiceGoogle[defaultLang].voiceType;
}
var client = new textToSpeech.TextToSpeechClient();
var request = {
input: {text: jsonMsg.text},
voice: {languageCode: jsonMsg.lang, ssmlGender: voiceType, name: voiceName},
audioConfig: {audioEncoding: audioEncoding},
};
var cancelSpeakGoogle = false;
var timeOfflineSpeak = setTimeout( function(){
cancelSpeakGoogle = true;
speakOffline( jsonMsg );
}, timeoutCloudTTS );
client.synthesizeSpeech(request, (err, response) => {
if (err) {
console.error('[Bobby Snips TTS Log] ERROR ', err);
if( !cancelSpeakGoogle ){
clearTimeout(timeOfflineSpeak);
speakOffline( jsonMsg );
}
return;
}
else{
if( audioEncoding == 'MP3' ){
console.log('[Bobby Snips TTS Log] '+hash+' / MP3 Time '+(Date.now()-debut)+'ms');
// fs.writeFile('output.mp3', response.audioContent, 'binary');
var decoder = new Lame({"output": "buffer"}).setBuffer(response.audioContent);
decoder.decode().then(() => {
clearTimeout(timeOfflineSpeak);
if( !cancelSpeakGoogle ){
waitFinished[hash] = { id: jsonMsg.id, sessionId: jsonMsg.sessionId };
clientMQTT.publish("hermes/audioServer/"+jsonMsg.siteId+"/playBytes/"+hash, decoder.getBuffer());
// fs.writeFile('output.wav', decoder.getBuffer(), 'binary');
console.log('[Bobby Snips TTS Log] '+hash+' / WAV Time '+(Date.now()-debut)+'ms');
}
}).catch((error) => {
console.error('[Bobby Snips TTS Log] ERROR ', error);
if( !cancelSpeakGoogle ){
clearTimeout(timeOfflineSpeak);
speakOffline( jsonMsg );
}
});
}
else{
clearTimeout(timeOfflineSpeak);
if( !cancelSpeakGoogle ){
waitFinished[hash] = { id: jsonMsg.id, sessionId: jsonMsg.sessionId };
clientMQTT.publish("hermes/audioServer/"+jsonMsg.siteId+"/playBytes/"+hash, response.audioContent);
console.log('[Bobby Snips TTS Log] '+hash+' / WAV Time '+(Date.now()-debut)+'ms');
}
}
}
});
}
function speakOffline( jsonMsg ) {
var debut = Date.now();
var hash = Math.random().toString(36).substr(2);
if( jsonMsg.lang ){
var voiceLang = voicePico[jsonMsg.lang.substr(0,2)];
}
else{
var voiceLang = voicePico[defaultLang];
}
exec('pico2wave -l ' + voiceLang + ' -w /tmp/' + hash + '.wav " ' + jsonMsg.text + '"', (error, stdout, stderr) => {
if(error) {
console.error('[Bobby Snips TTS Log] ERROR ', error);
return;
}
else{
fs.readFile('/tmp/' + hash + '.wav', function (err, data ) {
waitFinished[hash] = { id: jsonMsg.id, sessionId: jsonMsg.sessionId };
clientMQTT.publish("hermes/audioServer/"+jsonMsg.siteId+"/playBytes/"+hash, data);
console.log('[Bobby Snips TTS Log] '+hash+' / WAV Time '+(Date.now()-debut)+'ms');
exec('rm -f /tmp/' + hash + '.wav');
});
}
});
}