Re: [fixed+RESEND v8 0/4] usb: gadget: uvc: use configfs entries for negotiation and v4l2 VIDIOCS

[Michael Grzeschik <mgr@pengutronix.de>]

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On Wed, Sep 07, 2022 at 05:11:41PM +0200, Greg KH wrote:
>On Wed, Sep 07, 2022 at 05:04:53PM +0200, Michael Grzeschik wrote:
>> This series improves the uvc video gadget by parsing the configfs
>> entries. With the configfs data, the driver now is able to negotiate the
>> format with the usb host in the kernel and also exports the supported
>> frames/formats/intervals via the v4l2 VIDIOC interface.
>>
>> The uvc userspace stack is also under development. One example is an generic
>> v4l2uvcsink gstreamer elemnt, which is currently under discussion. [1]
>>
>> [1] https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304
>>
>> With the libusbgx library [1] used by the gadget-tool [2] it is now also
>> possible to fully describe the configfs layout of the uvc gadget with scheme
>> files.
>>
>> [2] https://github.com/linux-usb-gadgets/libusbgx/pull/61/commits/53231c76f9d512f59fdc23b65cd5c46b7fb09eb4
>>
>> [3] https://github.com/linux-usb-gadgets/gt/tree/master/examples/systemd
>>
>> The bigger picture of these patches is to provide a more versatile interface to
>> the uvc gadget. The goal is to simply start a uvc-gadget with the following
>> commands:
>>
>> $ gt load uvc.scheme
>> $ gst-launch v4l2src ! v4l2uvcsink
>
>This really is a "v9", the use of RESEND and "fixed+" will play havoc
>with our tools.
>
>Please fix up and try a real v10.

So everyday I learn more how I can spoil your workflow though. ;)

I will send v10 then.

Thanks,
Michael

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