Re: IMX frame interval monitor (FIM) available on ipu{1,2}_ic_prp{enc,vf} capture nodes?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sat, Jan 2, 2021 at 9:55 AM Steve Longerbeam <slongerbeam@xxxxxxxxx> wrote:
>
> Hi Tim,
>
> I gave this a shot a while ago, but I recall struggling with some
> locking problems. I haven't been able to return to it. I've updated the
> imx/add-fim-to-prpencvf branch to latest media-tree master branch
> (5.11.0-rc1), in my github fork [1]. The patches against master are:
>
> 0001-media-imx.rst-update-doc-to-reflect-FIM-changes.patch
> 0002-media-imx-prpencvf-attach-FIM.patch
> 0003-WIP.patch
>
> The last patch was my first attempts to debug the locking problems.
>
> I don't have access to imx6 hardware any longer, so I can't progress any
> further on it at this point.
>
> Steve
>
> [1] git@xxxxxxxxxx:slongerbeam/mediatree.git

Steve,

Thanks for the patches!

I have found via experimentation that if you are using the VDIC to
de-interlace and you loose/regain the signal to the adv7180 it will
roll endlesslessly. However if you are doing raw capture the video
will sync up within a few seconds (240 lines * 16.6ms-per-frame =
3.8secs max I suspect). Thus the simplest solution for users who
suffer from this may just be to capture raw and upscale.

Best regards,

Tim



[Index of Archives]     [Linux Input]     [Video for Linux]     [Gstreamer Embedded]     [Mplayer Users]     [Linux USB Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [Yosemite Backpacking]

  Powered by Linux