Transport

Base class for transport implementations that handle audio/video I/O streams.

Name identifier for the input stream

Name identifier for the output stream

Event loop to use for async operations. Defaults to the current running loop.

Returns the input frame processor. Must be implemented by subclasses.

@abstractmethod def input(self) -> FrameProcessor

Returns the output frame processor. Must be implemented by subclasses.

@abstractmethod def output(self) -> FrameProcessor

Decorator to register an event handler for the specified event. python def event_handler(self, event_name: str)

Adds an event handler function for the specified event.

def add_event_handler(self, event_name: str, handler)

Configuration parameters for transport audio/video capabilities.

Enable camera output

Whether camera output is live streaming

Camera output width in pixels

Camera output height in pixels

Camera output bitrate in bits/second

Camera output framerate

Camera output color format

Enable audio output

Audio output sample rate in Hz

Number of audio output channels

Audio output bitrate in bits/second

Audio output chunk size in 10ms intervals. Default is 4, resulting in 40ms chunks.

Audio mixer for output processing

Enable audio input

When enabled, incoming audio frames are pushed downstream

Audio input sample rate in Hz

Number of audio input channels

Audio filter for input processing

Voice Activity Detection analyzer. You can set this to either SileroVADAnalyzer() or WebRTCVADAnalyzer().

End of turn analyzer for advanced end-of-turn detection. You can set this to either SmartTurnAnalyzer() for remote inference or LocalCoreMLSmartTurnAnalyzer() for local inference.

Requirements:

• Audio input must be enabled (audio_in_enabled=True)
• VAD should be configured with a short pause detection (e.g., stop_secs=0.2)

# Example configuration
params=TransportParams(
    audio_in_enabled=True,
    vad_analyzer=SileroVADAnalyzer(params=VADParams(stop_secs=0.2)),
    turn_analyzer=SmartTurnAnalyzer(url=remote_smart_turn_url)
)

See Smart Turn Detection for more details.