mp.tasks.vision.drawing_styles.face_landmarker.serial_dispatcher.SerialDispatcher

A wrapper class for a ctypes.CDLL object that serializes all calls.

mp.tasks.vision.drawing_styles.face_landmarker.serial_dispatcher.SerialDispatcher(
    lib: ctypes.CDLL,
    signatures: Sequence[mp.tasks.vision.drawing_styles.face_landmarker.mediapipe_c_utils.CFunction]
)

This ensures that functions from a non-thread-safe C library are called sequentially from a single dedicated thread, preventing race conditions and segmentation faults.

If a function is a CStatusFunction, the dispatcher will raise a Python exception if the returned MpStatus code is not kMpOk.

lib The ctypes.CDLL object to wrap.
signatures the CFunction objects specifying the functions to wrap.

Methods

close

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close()

Shuts down the dispatcher and waits for pending tasks to complete.

__enter__

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__enter__()

__exit__

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__exit__(
    exc_type, exc_val, exc_tb
)