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Groups > linux.kernel > #1602151
| From | Philipp Zabel <p.zabel@pengutronix.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline) |
| Date | 2017-03-16 11:10 +0100 |
| Message-ID | <tlAw2-59w-15@gated-at.bofh.it> (permalink) |
| References | (6 earlier) <tl5se-8fK-13@gated-at.bofh.it> <tleYy-6NF-13@gated-at.bofh.it> <tlmjo-3g1-19@gated-at.bofh.it> <tlzTj-4Bt-1@gated-at.bofh.it> <tlAmn-4QJ-23@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, 2017-03-16 at 10:47 +0100, Philippe De Muyter wrote: > On Thu, Mar 16, 2017 at 10:26:00AM +0100, Philipp Zabel wrote: > > On Wed, 2017-03-15 at 14:55 -0400, Nicolas Dufresne wrote: > > > Le mercredi 15 mars 2017 à 11:50 +0100, Philippe De Muyter a écrit : > > > > > I would say: camorama, xawtv3, zbar, google talk, skype. If it runs > > > > > with those, it will likely run with any other application. > > > > > > > > > > > > > I would like to add the 'v4l2src' plugin of gstreamer, and on the > > > > imx6 its > > > > > > While it would be nice if somehow you would get v4l2src to work (in > > > some legacy/emulation mode through libv4l2), > > > > v4l2src works just fine, provided the pipeline is configured manually in > > advance via media-ctl. > > Including choosing the framerate ? Sorry, I have no time these days > to test it myself. No, the framerate is set with media-ctl on the CSI output pad. To really choose the framerate, the element would indeed need a deeper understanding of the pipeline, as the resulting framerate depends on at least the source v4l2_subdevice (sensor) framerate and the CSI frame skipping. > And I cited imxv4l2videosrc for its ability to provide the physical address > of the image buffers for further processing by other (not necessarily next > in gstreamer pipeline, or for all frames) hardware-accelerated plugins likes > the h.264 video encoder. As I am stuck with fsl/nxp kernel and driver on that > matter, I don't know how the interfaces have evolved in current linux kernels. The physical address of the image buffers is hidden from userspace by dma-buf objects, but those can be passed around to the next driver without copying the image data. regards Philipp
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Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-14 04:50 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Hans Verkuil <hverkuil@xs4all.nl> - 2017-03-14 09:00 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-14 11:30 +0100
media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline) Pavel Machek <pavel@ucw.cz> - 2017-03-14 23:40 +0100
Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline) Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-15 02:00 +0100
Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline) Philippe De Muyter <phdm@macq.eu> - 2017-03-15 12:10 +0100
Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline) Nicolas Dufresne <nicolas@ndufresne.ca> - 2017-03-15 20:00 +0100
Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline) Philipp Zabel <p.zabel@pengutronix.de> - 2017-03-16 10:30 +0100
Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline) Philippe De Muyter <phdm@macq.eu> - 2017-03-16 11:00 +0100
Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline) Philipp Zabel <p.zabel@pengutronix.de> - 2017-03-16 11:10 +0100
Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline) Philippe De Muyter <phdm@macq.eu> - 2017-03-16 11:30 +0100
Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline) Pavel Machek <pavel@ucw.cz> - 2017-03-15 19:10 +0100
Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline) Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-15 21:30 +0100
Re: media / v4l2-mc: wishlist for complex cameras (was Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline) Pavel Machek <pavel@ucw.cz> - 2017-03-16 23:20 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Hans Verkuil <hverkuil@xs4all.nl> - 2017-03-20 14:30 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-20 16:50 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-03-20 17:20 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-20 18:40 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-03-17 12:50 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Sakari Ailus <sakari.ailus@linux.intel.com> - 2017-03-17 13:00 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Philipp Zabel <p.zabel@pengutronix.de> - 2017-03-17 15:00 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-03-17 15:50 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Hans Verkuil <hverkuil@xs4all.nl> - 2017-03-20 14:20 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-20 16:20 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-17 15:10 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Pavel Machek <pavel@ucw.cz> - 2017-03-21 12:20 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Hans Verkuil <hverkuil@xs4all.nl> - 2017-03-20 12:20 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Philipp Zabel <p.zabel@pengutronix.de> - 2017-03-17 13:10 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-03-17 13:30 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-03-17 19:00 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Pavel Machek <pavel@ucw.cz> - 2017-03-19 14:30 +0100
Re: [PATCH v4 14/36] [media] v4l2-mc: add a function to inherit controls from a pipeline Laurent Pinchart <laurent.pinchart@ideasonboard.com> - 2017-03-26 18:50 +0200
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