support tts deepgram (#277)

lib/routes/api/speech-credentials.js

@@ -5,7 +5,7 @@ const SpeechCredential = require('../../models/speech-credential');
 const sysError = require('../error');
 const {decrypt, encrypt} = require('../../utils/encrypt-decrypt');
 const {parseAccountSid, parseServiceProviderSid, parseSpeechCredentialSid} = require('./utils');
-const {decryptCredential, testWhisper} = require('../../utils/speech-utils');
+const {decryptCredential, testWhisper, testDeepgramTTS} = require('../../utils/speech-utils');
 const {DbErrorUnprocessableRequest, DbErrorForbidden} = require('../../utils/errors');
 const {
   testGoogleTts,
@@ -637,6 +637,16 @@ router.get('/:sid/test', async(req, res) => {
     }
     else if (cred.vendor === 'deepgram') {
       const {api_key} = credential;
+      if (cred.use_for_tts) {
+        try {
+          await testDeepgramTTS(logger, synthAudio, credential);
+          results.tts.status = 'ok';
+          SpeechCredential.ttsTestResult(sid, true);
+        } catch (err) {
+          results.tts = {status: 'fail', reason: err.message};
+          SpeechCredential.ttsTestResult(sid, false);
+        }
+      }
       if (cred.use_for_stt) {
         try {
           await testDeepgramStt(logger, {api_key});

lib/utils/speech-utils.js

@@ -233,6 +233,24 @@ const testWhisper = async(logger, synthAudio, credentials) => {
   }
 };
 
+const testDeepgramTTS = async(logger, synthAudio, credentials) => {
+  try {
+    await synthAudio({increment: () => {}, histogram: () => {}},
+      {
+        vendor: 'deepgram',
+        credentials,
+        language: 'en-US',
+        voice: 'alpha-aurora-en-v2',
+        model: 'alpha-aurora-en-v2',
+        text: 'Hi there and welcome to jambones!'
+      }
+    );
+  } catch (err) {
+    logger.info({err}, 'testDeepgramTTS returned error');
+    throw err;
+  }
+};
+
 const testIbmTts = async(logger, getTtsVoices, credentials) => {
   const {tts_api_key, tts_region} = credentials;
   const voices = await getTtsVoices({vendor: 'ibm', credentials: {tts_api_key, tts_region}});
@@ -418,6 +436,7 @@ module.exports = {
   testSonioxStt,
   testElevenlabs,
   testAssemblyStt,
+  testDeepgramTTS,
   getSpeechCredential,
   decryptCredential,
   testWhisper

package.json

@@ -29,7 +29,7 @@
     "@jambonz/lamejs": "^1.2.2",
     "@jambonz/mw-registrar": "^0.2.7",
     "@jambonz/realtimedb-helpers": "^0.8.7",
-    "@jambonz/speech-utils": "^0.0.32",
+    "@jambonz/speech-utils": "^0.0.33",
     "@jambonz/time-series": "^0.2.8",
     "@jambonz/verb-specifications": "^0.0.45",
     "@soniox/soniox-node": "^1.1.1",