.. _examples_vpu/multi_configure:

Example: vpu/multi_configure.py
===============================

.. code-block:: python

	# Copyright (c) 2024 Justin Davis (davisjustin302@gmail.com)
	#
	# MIT License
	"""Example showcasing how to reconfigure the VPU on the fly."""
	
	from __future__ import annotations
	
	import time
	from collections import deque
	
	import numpy as np
	from oakutils import VPU
	from oakutils.blobs.models.shave6 import GAUSSIAN_15X15, LAPLACIAN_15X15
	
	SWAP_TIME = 10
	
	
	def get_model(current_model: str) -> str:
	    """Get the next model to use."""
	    if current_model == GAUSSIAN_15X15:
	        current_model = LAPLACIAN_15X15
	    else:
	        current_model = GAUSSIAN_15X15
	    return current_model
	
	
	vpu = VPU()
	current_model = GAUSSIAN_15X15
	vpu.reconfigure(current_model)
	rng = np.random.Generator(np.random.PCG64())
	fps_buffer = deque(maxlen=SWAP_TIME)
	counter = 0
	while True:
	    # reconfigure every 10 frames
	    if counter == SWAP_TIME - 1:
	        current_model = get_model(current_model)
	        vpu.reconfigure(current_model)
	        counter = 0
	        fps_buffer.clear()
	    # generate some random data, then send to camera and wait for the result
	    data = np.array(rng.integers(0, 255, (640, 480, 3)), dtype=np.uint8)
	    t0 = time.perf_counter()
	    vpu.run(data)
	    t1 = time.perf_counter()
	    fps_buffer.append(1.0 / (t1 - t0))
	    print(f"FPS: {np.mean(fps_buffer):.2f}")
	    counter += 1