Add xfyun asr service

engine/transcript_stream.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+from pipecat.frames.frames import (
+    Frame,
+    InterimTranscriptionFrame,
+    OutputTransportMessageUrgentFrame,
+)
+from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
+
+
+class ProductTranscriptStreamProcessor(FrameProcessor):
+    """Mirrors interim STT frames to the product websocket protocol."""
+
+    async def process_frame(self, frame: Frame, direction: FrameDirection) -> None:
+        await super().process_frame(frame, direction)
+
+        if isinstance(frame, InterimTranscriptionFrame):
+            await self.push_frame(
+                OutputTransportMessageUrgentFrame(
+                    message={
+                        "type": "input.transcript.interim",
+                        "text": frame.text,
+                        "user_id": frame.user_id,
+                        "timestamp": frame.timestamp,
+                    }
+                ),
+                FrameDirection.DOWNSTREAM,
+            )
+
+        await self.push_frame(frame, direction)