Depthai V3 new practice for 'XLinkOut'

YWei

Hi everyone,

Our project just changed all the cameras to the latest OAK 4S, so I am pretty much refactoring my codelines by following the V3 practice.

For this part:
xout = pipeline.create(dai.node.XLinkOut)

xout.setStreamName('end')

script.outputs['end'].link(xout.input)

It points out an error:
xout = pipeline.create(dai.node.XLinkOut)

^^^^^^^^^^^^^^^^^

AttributeError: module 'depthai.node' has no attribute 'XLinkOut'

I tried to go through the official docs as much as I can but didn't really find a solution for this (maybe I was not careful enough when digging through these new knowledge 🫣), but this page didn't show a new way to create a XLinkOut

I feel I am going very slow for this now so would like some help from you guys!

Cheers,

Austin

MatevzMorato

Hi @YWei !

We've removed explicit XLink nodes in DepthAI v3 - you can check out the porting guide we prepared here:
luxonis/depthai-coreblob/main/V2V3PortinGuide.md

We've had decent success feeding it to a LLM (ChatGPT, Claude) and have it do the initial port of the code by itself.

Let us know how it goes!

Matevz

VihaanShah

I guess I have a follow up question here. The porting guide says the "XLink bridges are made automatically". Is there a lower level of the API so I can do the connection handling myself without having to build the whole source code.

I am trying to use the OAK camera for a real-time application that is more latency sensitive and am trying to see if I can shave off some milliseconds directly. Also, do you have a latency testing script like this one for luxonis/oak-examplesblob/master/random-scripts/oak_latency_test.py for depthai v3?

jakaskerl

VihaanShah
You can't, but the logic that was available for the xlink queues is still exposed so tweaks can be made (setting queue sizes and such).

VihaanShah I am trying to use the OAK camera for a real-time application that is more latency sensitive and am trying to see if I can shave off some milliseconds directly. Also, do you have a latency testing script like this one for luxonis/oak-examplesblob/master/random-scripts/oak_latency_test.py for depthai v3?

Will update it this week.

Thanks,
Jaka