# Streaming an OAK-D using Xlink

## Streaming from an [OAK-D](https://store.opencv.ai/products/oak-d) PoE using Xlink and Using OpenVINO for inference

Currently the OAK-D Xlink build is dependent on OpenVINO library for functionality. Even if you decide to not use OpenVINO the library still requires OpenVINO to be installed to function properly.

### 1.0 Build Sensor Stream Pipe for OAK-D Xlink

1.1 Ensure that OpenVINO environment variables are set in the command terminal

Linux: `source /opt/intel/openvino_2021/bin/setupvars.sh`

Windows: `C:\Program Files (x86)\Intel\openvino_<version>/bin/setupvars.sh`

1.1 Follow the instructions: [windows](https://sensor-stream-pipe.moetsi.com/windows "mention") or [linux](https://sensor-stream-pipe.moetsi.com/linux "mention") and use the `-DXLINK_ENABLED=TRUE` flag when building

### 2.0 Use Sensor Stream Pipe to Stream OAK-D frames using Xlink

{% hint style="info" %}
**You will likely need to edit** **oakd\_xlink\_reader.cc to grab the exact frames and run the model you want on those frames**

Currently oakd\_xlink\_reader.cc does the following:

* requests a 300x300 RGB image and streams it
* runs inference on the 300x300 image [using the model from the OpenVINO HelloClassification example](https://docs.openvino.ai/latest/openvino_inference_engine_samples_hello_classification_README.html)
  * running inference on the model in /models

**Why run inference and output the results in Sensor Stream Pipe?**

We wanted to use an example that you can follow from OpenVINO documentation so you can upload different models to /models. You can extend SSP to support additional frames such as inference results from an OpenVINO model.
{% endhint %}

**2.1** Run SSP client to show the color frames

`./ssp_client_opencv 9999`

**2.2** Update serve\_xlink\_raw\.yaml to use the IP address of your OAK-D PoE (line 8)

**2.3 (only if Linux)** Create USB rules for PoE

`echo 'SUBSYSTEM=="usb", ATTRS{idVendor}=="03e7", MODE="0666"' | sudo tee /etc/udev/rules.d/80-movidius.rules`

This creates that /etc/udev/rules.d/80-movidius.rules . It's required when using the DepthAI USB interface, for regular users (non root)

**2.4 Trigger OAK-D to send SSP reader frames through Xlink**

`./ssp_server ../../configs/serve_xlink_raw.yaml`