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V4L2_MEMORY_USERPTR Support #146

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cnalley opened this issue Sep 4, 2017 · 4 comments
Open

V4L2_MEMORY_USERPTR Support #146

cnalley opened this issue Sep 4, 2017 · 4 comments
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accepting PRs it's unlikely that this issue will be fixed by us, but PRs are welcome. (btw PRs are always welcome) kind:feature request

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@cnalley
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cnalley commented Sep 4, 2017

Are there any plans in the future to add support for streaming I/O with user pointers? I have a device that I need to mimic that uses user pointer I/O so I may try to work on this functionality in the future. Is there a reason user pointer support was not included and has there been any work or discussion towards adding this feature?
@umlaeute
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umlaeute commented Sep 5, 2017

patches welcome

@umlaeute umlaeute added the accepting PRs it's unlikely that this issue will be fixed by us, but PRs are welcome. (btw PRs are always welcome) label Apr 12, 2023
@Liza1444
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Liza1444 commented Aug 22, 2023 •
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Hello,

I have and app that works with v4l2 and user ptr .
i need a simulator to stream the video to my code .
using gstreamer\v4l2sink to write to v4l2loopback fails since v4l2loopback does not support userptr mode.

Questions:

  1. is there any plan supporting userptr mode with v4l2loopback ?
  2. can you tell what are the main challanges adding userptr support to v4l2 ?
    any reference is wellcome .
    3.any other suggestion ?

@movepointsolutions
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https://github.com/movepointsolutions/v4l2loopback
I'm starting doing userptr support,
examples and particular gst-launch-1.0 pipelines welcome

@umlaeute
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looking forward to your PR

This was referenced Aug 30, 2023
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@umlaeute @cnalley @movepointsolutions @Liza1444