Add a new generic server to client message and frame type

src/pipecat/processors/frameworks/rtvi.py

@@ -38,6 +38,7 @@ from pipecat.frames.frames import (
     LLMFullResponseStartFrame,
     LLMTextFrame,
     MetricsFrame,
+    ServerMessageFrame,
     StartFrame,
     SystemFrame,
     TranscriptionFrame,
@@ -375,6 +376,12 @@ class RTVIMetricsMessage(BaseModel):
     data: Mapping[str, Any]
 
 
+class RTVIServerMessage(BaseModel):
+    label: RTVIMessageLiteral = RTVI_MESSAGE_LABEL
+    type: Literal["server-message"] = "server-message"
+    data: Any
+
+
 class RTVIFrameProcessor(FrameProcessor):
     def __init__(self, direction: FrameDirection = FrameDirection.DOWNSTREAM, **kwargs):
         super().__init__(**kwargs)
@@ -710,6 +717,9 @@ class RTVIObserver(BaseObserver):
                 mark_as_seen = False
         elif isinstance(frame, MetricsFrame):
             await self._handle_metrics(frame)
+        elif isinstance(frame, ServerMessageFrame):
+            message = RTVIServerMessage(data=frame.data)
+            await self.push_transport_message_urgent(message)
 
         if mark_as_seen:
             self._frames_seen.add(frame.id)
@@ -895,6 +905,11 @@ class RTVIProcessor(FrameProcessor):
     async def handle_message(self, message: RTVIMessage):
         await self._message_queue.put(message)
 
+    async def _handle_server_message(self, frame: ServerMessageFrame):
+        """Handle server message frame by converting it to a transport message."""
+        message = RTVIServerMessage(data=frame.data)
+        await self._push_transport_message(message)
+
     async def handle_function_call(
         self,
         function_name: str,
@@ -934,6 +949,9 @@ class RTVIProcessor(FrameProcessor):
             await self.push_frame(frame, direction)
         elif isinstance(frame, TransportMessageUrgentFrame):
             await self._handle_transport_message(frame)
+        elif isinstance(frame, ServerMessageFrame):
+            await self._handle_server_message(frame)
+            await self.push_frame(frame, direction)
         # All other system frames
         elif isinstance(frame, SystemFrame):
             await self.push_frame(frame, direction)