GStreamer Nvidia V4L2 ROI support

We’ve made some changes to the publicly released nvidia fork of the v4l2 plugins to add support for changing the quantization parameters for a specific region of interest. This can be found at v4l2: add support for nvidia-specific roi information · ystreet/gst-nvidia-v4l2@64d88ae · GitHub if you are interested. This change was made on top of L4T R32.6.1 tarball but should relatively easily apply to many other L4T versions.

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Hi, Firstly thank you for providing your source code. I had combined into plugin and built it. But, It’s NOT operated as I expect. Is there any method of input option? So, I’d like to have a question about that. To adapt the ROI regions, I assume that gst_video_region_of_interest_meta_add_param() may be called prior to set operation (gst_video_region_of_interest_meta_get_param(). But I did NOT find in you source code for it. Please, give a guidance and comments for it. Thank you in advance.

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