services(deepgram): add url to DeepgramSTTService

CHANGELOG.md

@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Allow specifying a `DeepgramSTTService` url which allows using on-prem
+  Deepgram.
+
 - Added new `FastAPIWebsocketTransport`. This is a new websocket transport that
   can be integrated with FastAPI websockets.
 

src/pipecat/services/deepgram.py

@@ -89,6 +89,7 @@ class DeepgramTTSService(TTSService):
 class DeepgramSTTService(AIService):
     def __init__(self,
                  api_key: str,
+                 url: str = "",
                  live_options: LiveOptions = LiveOptions(
                      encoding="linear16",
                      language="en-US",
@@ -104,7 +105,7 @@ class DeepgramSTTService(AIService):
         self._live_options = live_options
 
         self._client = DeepgramClient(
-            api_key, config=DeepgramClientOptions(options={"keepalive": "true"}))
+            api_key, config=DeepgramClientOptions(url=url, options={"keepalive": "true"}))
         self._connection = self._client.listen.asynclive.v("1")
         self._connection.on(LiveTranscriptionEvents.Transcript, self._on_message)