examples(foundational): support multiple transports

examples/foundational/18a-gstreamer-videotestsrc.py

@@ -13,27 +13,33 @@ from pipecat.pipeline.pipeline import Pipeline
 from pipecat.pipeline.runner import PipelineRunner
 from pipecat.pipeline.task import PipelineTask
 from pipecat.processors.gstreamer.pipeline_source import GStreamerPipelineSource
-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)
 
+# 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_is_live=True,
+        video_out_width=1280,
+        video_out_height=720,
+    ),
+    "webrtc": lambda: TransportParams(
+        video_out_enabled=True,
+        video_out_is_live=True,
+        video_out_width=1280,
+        video_out_height=720,
+    ),
+}
 
-async def run_bot(webrtc_connection: SmallWebRTCConnection, _: argparse.Namespace):
+
+async def run_example(transport: BaseTransport, _: argparse.Namespace):
     logger.info(f"Starting bot with video test source")
 
-    transport = SmallWebRTCTransport(
-        webrtc_connection=webrtc_connection,
-        params=TransportParams(
-            audio_in_enabled=True,
-            video_out_enabled=True,
-            video_out_is_live=True,
-            video_out_width=1280,
-            video_out_height=720,
-        ),
-    )
-
     gst = GStreamerPipelineSource(
         pipeline='videotestsrc ! capsfilter caps="video/x-raw,width=1280,height=720,framerate=30/1"',
         out_params=GStreamerPipelineSource.OutputParams(
@@ -58,4 +64,4 @@ async def run_bot(webrtc_connection: SmallWebRTCConnection, _: argparse.Namespac
 if __name__ == "__main__":
     from run import main
 
-    main()
+    main(run_example, transport_params=transport_params)