null_filter

Null filter processor for blocking frame transmission.

This module provides a frame processor that blocks all frames except system and end frames, useful for testing or temporarily stopping frame flow in a pipeline.

class pipecat.processors.filters.null_filter.NullFilter(**kwargs)

Bases: FrameProcessor

A filter that blocks all frames except system and end frames.

This processor acts as a null filter, preventing frames from passing through the pipeline while still allowing essential system and end frames to maintain proper pipeline operation.

__init__(**kwargs)

Initialize the null filter.

Parameters:

**kwargs – Additional arguments passed to parent FrameProcessor.

async process_frame(frame: Frame, direction: FrameDirection)

Process incoming frames, only allowing system and end frames through.

Parameters:

• frame – The frame to process.

• direction – The direction of frame flow in the pipeline.