#
# Copyright (c) 2024-2026, Daily
#
# SPDX-License-Identifier: BSD 2-Clause License
#
"""User turn start strategy based on VAD events."""
from pipecat.frames.frames import Frame, VADUserStartedSpeakingFrame
from pipecat.turns.types import ProcessFrameResult
from pipecat.turns.user_start.base_user_turn_start_strategy import BaseUserTurnStartStrategy
[docs]
class VADUserTurnStartStrategy(BaseUserTurnStartStrategy):
"""User turn start strategy based on VAD (Voice Activity Detection).
This strategy assumes the user turn starts as soon as a VAD frame indicates
that the user has started speaking.
"""
[docs]
async def process_frame(self, frame: Frame) -> ProcessFrameResult:
"""Process an incoming frame to detect user turn start.
Args:
frame: The frame to be analyzed.
Returns:
STOP if the user started speaking, CONTINUE otherwise.
"""
if isinstance(frame, VADUserStartedSpeakingFrame):
await self.trigger_user_turn_started()
return ProcessFrameResult.STOP
return ProcessFrameResult.CONTINUE