Linux Media Controller development
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From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: linux-media@vger.kernel.org, Hans Verkuil <hverkuil@xs4all.nl>
Subject: Re: [PATCH 3/3 v7] uvcvideo: add a metadata device node
Date: Wed, 6 Dec 2017 16:08:14 +0100 (CET)	[thread overview]
Message-ID: <alpine.DEB.2.20.1712061503060.26640@axis700.grange> (raw)
In-Reply-To: <alpine.DEB.2.20.1712051454460.22421@axis700.grange>

Hi Laurent,

While testing the new patch version, we did introduce a couple of 
differences:

1. We cannot (easily) reuse .vidioc_querycap() - the metadata node uses 
v4l2_fh_open() directly, so, it has a different struct file::private_data 
pointer.

2. After your video device unification, the order has swapped: now 
/dev/video0 is a metadata node and /dev/video1 is a video node. Is that 
how you wanted to have this or you don't mind or shall I swap them back? 
For now I've swapped them back, I think that would be more appropriate.

Thanks
Guennadi

  reply	other threads:[~2017-12-06 15:08 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-08 16:00 [PATCH 0/3 v7] uvcvideo: metadata nodes Guennadi Liakhovetski
2017-11-08 16:00 ` [PATCH 1/3 v7] V4L: Add a UVC Metadata format Guennadi Liakhovetski
2017-11-28 15:20   ` Laurent Pinchart
2017-11-28 15:26     ` Guennadi Liakhovetski
2017-11-08 16:00 ` [PATCH 2/3 v7] uvcvideo: add extensible device information Guennadi Liakhovetski
2017-11-28 15:55   ` Laurent Pinchart
2017-11-28 16:20     ` Guennadi Liakhovetski
2017-11-08 16:00 ` [PATCH 3/3 v7] uvcvideo: add a metadata device node Guennadi Liakhovetski
2017-12-05  0:24   ` Laurent Pinchart
2017-12-05  1:03     ` Laurent Pinchart
2017-12-05  8:06       ` Guennadi Liakhovetski
2017-12-05  9:44         ` Laurent Pinchart
2017-12-05 10:56     ` Guennadi Liakhovetski
2017-12-05 13:35       ` Laurent Pinchart
2017-12-05 13:44         ` Guennadi Liakhovetski
2017-12-05 13:49           ` Laurent Pinchart
2017-12-05 14:00             ` Guennadi Liakhovetski
2017-12-06 15:08               ` Guennadi Liakhovetski [this message]
2017-12-11 19:53                 ` Laurent Pinchart
2017-12-06 15:15             ` [PATCH v8] uvcvideo: Add " Guennadi Liakhovetski
2017-12-11 20:16               ` Laurent Pinchart
2017-12-11 21:15                 ` Laurent Pinchart
2017-12-11 21:44                   ` Guennadi Liakhovetski
2017-12-11 21:53                     ` Laurent Pinchart
2017-12-12  8:30                       ` Guennadi Liakhovetski
2017-12-13  9:41                         ` Laurent Pinchart
2017-12-13  9:51                           ` Guennadi Liakhovetski

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