support self hosted microsoft

lib/synth-audio.js

@@ -14,7 +14,7 @@ const {
   CancellationDetails,
   SpeechSynthesisOutputFormat
 } = sdk;
-const {makeSynthKey, createNuanceClient, createKryptonClient, createRivaClient, noopLogger} = require('./utils');
+const {makeSynthKey, createNuanceClient, createKryptonClient, createRivaClient, noopLogger, isValidHttpOrWsUrl} = require('./utils');
 const getNuanceAccessToken = require('./get-nuance-access-token');
 const {
   SynthesisRequest,
@@ -309,10 +309,19 @@ const synthMicrosoft = async(logger, {
     const {api_key: apiKey, region, use_custom_tts, custom_tts_endpoint} = credentials;
     const trimSilence = filePath.endsWith('.r8');
     let content = text;
-    const speechConfig = SpeechConfig.fromSubscription(apiKey, region);
+    let speechConfig;
+    if (use_custom_tts && isValidHttpOrWsUrl(custom_tts_endpoint)) {
+      if (apiKey) {
+        speechConfig = SpeechConfig.fromEndpoint(custom_tts_endpoint, apiKey);
+      } else {
+        speechConfig = SpeechConfig.fromEndpoint(custom_tts_endpoint);
+      }
+    } else {
+      speechConfig = SpeechConfig.fromSubscription(apiKey, region);
+    }
     speechConfig.speechSynthesisLanguage = language;
     speechConfig.speechSynthesisVoiceName = voice;
-    if (use_custom_tts && custom_tts_endpoint) {
+    if (use_custom_tts && !isValidHttpOrWsUrl(custom_tts_endpoint)) {
       speechConfig.endpointId = custom_tts_endpoint;
 
       /**

lib/utils.js

@@ -106,6 +106,11 @@ const createRivaClient = async(rivaUri) => {
   return client;
 };
 
+const isValidHttpOrWsUrl = (url) => {
+  const pattern = new RegExp('^(https?:\/\/|wss?:\/\/)');
+  return !!url.match(pattern);
+}
+
 
 module.exports = {
   makeSynthKey,
@@ -117,5 +122,6 @@ module.exports = {
   createRivaClient,
   makeBasicAuthHeader,
   NUANCE_AUTH_ENDPOINT,
-  noopLogger
+  noopLogger,
+  isValidHttpOrWsUrl
 };