examples(foundational): support multiple transports

examples/foundational/03-still-frame.py

@@ -16,25 +16,31 @@ from pipecat.pipeline.pipeline import Pipeline
 from pipecat.pipeline.runner import PipelineRunner
 from pipecat.pipeline.task import PipelineTask
 from pipecat.services.fal.image import FalImageGenService
-from pipecat.transports.base_transport import TransportParams
-from pipecat.transports.network.small_webrtc import SmallWebRTCTransport
-from pipecat.transports.network.webrtc_connection import SmallWebRTCConnection
+from pipecat.transports.base_transport import BaseTransport, TransportParams
+from pipecat.transports.services.daily import DailyParams
 
 load_dotenv(override=True)
 
 
-async def run_bot(webrtc_connection: SmallWebRTCConnection, _: argparse.Namespace):
-    logger.info(f"Starting bot")
+# We store functions so objects (e.g. SileroVADAnalyzer) don't get
+# instantiated. The function will be called when the desired transport gets
+# selected.
+transport_params = {
+    "daily": lambda: DailyParams(
+        video_out_enabled=True,
+        video_out_width=1024,
+        video_out_height=1024,
+    ),
+    "webrtc": lambda: TransportParams(
+        video_out_enabled=True,
+        video_out_width=1024,
+        video_out_height=1024,
+    ),
+}
 
-    # Create a transport using the WebRTC connection
-    transport = SmallWebRTCTransport(
-        webrtc_connection=webrtc_connection,
-        params=TransportParams(
-            video_out_enabled=True,
-            video_out_width=1024,
-            video_out_height=1024,
-        ),
-    )
+
+async def run_example(transport: BaseTransport, _: argparse.Namespace):
+    logger.info(f"Starting bot")
 
     # Create an HTTP session
     async with aiohttp.ClientSession() as session:
@@ -54,6 +60,7 @@ async def run_bot(webrtc_connection: SmallWebRTCConnection, _: argparse.Namespac
         @transport.event_handler("on_client_disconnected")
         async def on_client_disconnected(transport, client):
             logger.info(f"Client disconnected")
+            await task.cancel()
 
         @transport.event_handler("on_client_closed")
         async def on_client_closed(transport, client):
@@ -68,4 +75,4 @@ async def run_bot(webrtc_connection: SmallWebRTCConnection, _: argparse.Namespac
 if __name__ == "__main__":
     from run import main
 
-    main()
+    main(run_example, transport_params=transport_params)