support gladia stt (#1397)

* support gladia stt

* wip

* wip

* update verb specification

lib/utils/constants.json

@@ -103,6 +103,12 @@
     "Connect": "deepgramflux_transcribe::connect",
     "Error": "deepgramflux_transcribe::error"
   },
+  "GladiaTranscriptionEvents": {
+    "Transcription": "gladia_transcribe::transcription",
+    "ConnectFailure": "gladia_transcribe::connect_failed",
+    "Connect": "gladia_transcribe::connect",
+    "Error": "gladia_transcribe::error"
+  },
   "SonioxTranscriptionEvents": {
     "Transcription": "soniox_transcribe::transcription",
     "Error": "soniox_transcribe::error"

lib/utils/db-utils.js

@@ -81,6 +81,11 @@ const speechMapper = (cred) => {
       obj.deepgram_tts_uri = o.deepgram_tts_uri;
       obj.deepgram_stt_use_tls = o.deepgram_stt_use_tls;
     }
+    else if ('gladia' === obj.vendor) {
+      const o = JSON.parse(decrypt(credential));
+      obj.api_key = o.api_key;
+      obj.region = o.region;
+    }
     else if ('deepgramflux' === obj.vendor) {
       const o = JSON.parse(decrypt(credential));
       obj.api_key = o.api_key;

lib/utils/transcription-utils.js

@@ -376,6 +376,30 @@ const normalizeDeepgram = (evt, channel, language, shortUtterance) => {
   };
 };
 
+const normalizeGladia = (evt, channel, language, shortUtterance) => {
+  const copy = JSON.parse(JSON.stringify(evt));
+
+  // Handle Gladia transcript format
+  if (evt.type === 'transcript' && evt.data && evt.data.utterance) {
+    const utterance = evt.data.utterance;
+    const alternatives = [{
+      confidence: utterance.confidence || 0,
+      transcript: utterance.text || '',
+    }];
+
+    return {
+      language_code: utterance.language || language,
+      channel_tag: channel,
+      is_final: evt.data.is_final || false,
+      alternatives,
+      vendor: {
+        name: 'gladia',
+        evt: copy
+      }
+    };
+  }
+};
+
 const normalizeDeepgramFlux = (evt, channel, language) => {
   const copy = JSON.parse(JSON.stringify(evt));
 
@@ -742,6 +766,8 @@ module.exports = (logger) => {
     switch (vendor) {
       case 'deepgram':
         return normalizeDeepgram(evt, channel, language, shortUtterance);
+      case 'gladia':
+        return normalizeGladia(evt, channel, language, shortUtterance);
       case 'deepgramflux':
         return normalizeDeepgramFlux(evt, channel, language, shortUtterance);
       case 'microsoft':
@@ -1059,6 +1085,13 @@ module.exports = (logger) => {
         ...(keyterms && keyterms.length > 0 && {DEEPGRAMFLUX_SPEECH_KEYTERMS: keyterms.join(',')}),
       };
     }
+    else if ('gladia' === vendor) {
+      const {host, path} = sttCredentials;
+      opts = {
+        GLADIA_SPEECH_HOST: host,
+        GLADIA_SPEECH_PATH: path,
+      };
+    }
     else if ('soniox' === vendor) {
       const {sonioxOptions = {}} = rOpts;
       const {storage = {}} = sonioxOptions;