gemini(multimodal live): connect on StartFrame

examples/foundational/26-gemini-multimodal-live.py

@@ -15,6 +15,7 @@ from runner import configure
 
 from pipecat.audio.vad.silero import SileroVADAnalyzer
 from pipecat.audio.vad.vad_analyzer import VADParams
+from pipecat.frames.frames import LLMMessagesAppendFrame
 from pipecat.pipeline.pipeline import Pipeline
 from pipecat.pipeline.runner import PipelineRunner
 from pipecat.pipeline.task import PipelineParams, PipelineTask
@@ -71,6 +72,21 @@ async def main():
             ),
         )
 
+        @transport.event_handler("on_first_participant_joined")
+        async def on_first_participant_joined(transport, participant):
+            await task.queue_frames(
+                [
+                    LLMMessagesAppendFrame(
+                        messages=[
+                            {
+                                "role": "assistant",
+                                "content": "Greet the user.",
+                            }
+                        ]
+                    )
+                ]
+            )
+
         runner = PipelineRunner()
 
         await runner.run(task)