XLink Bridge

1#!/usr/bin/env python3
2
3import argparse
4import cv2
5import depthai as dai
6
7
8parser = argparse.ArgumentParser()
9parser.add_argument(
10    "--fps_limit", type=float, default=3.0, help="Limit output FPS (float, optional)"
11)
12args = parser.parse_args()
13
14# Create pipeline
15with dai.Pipeline() as pipeline:
16    # Define source and output
17    cam = pipeline.create(dai.node.Camera).build()
18    videoOutput = cam.requestOutput((640, 400), fps=30)
19    videoQueue = videoOutput.createOutputQueue()
20
21    pipeline.build()
22
23    # Optionally update internal settings
24    # Note: xlink bridges are only generated after pipeline.build() is called
25    xlinkBridge = videoOutput.getXLinkBridge()
26    assert xlinkBridge is not None
27    assert isinstance(xlinkBridge, dai.node.internal.XLinkOutBridge)
28    xlinkBridge.xLinkOut.setFpsLimit(args.fps_limit)
29
30    # Connect to device and start pipeline
31    pipeline.start()
32    while pipeline.isRunning():
33        videoIn = videoQueue.get()
34        assert isinstance(videoIn, dai.ImgFrame)
35        cv2.imshow("video", videoIn.getCvFrame())
36
37        if cv2.waitKey(1) == ord("q"):
38            break