From: "Pali Rohár" <pali.rohar@gmail.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>,
sre@kernel.org, kernel list <linux-kernel@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
linux-omap@vger.kernel.org, tony@atomide.com, khilman@kernel.org,
aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com,
patrikbachan@gmail.com, serge@hallyn.com, abcloriens@gmail.com,
Sakari Ailus <sakari.ailus@iki.fi>,
Sakari Ailus <sakari.ailus@linux.intel.com>,
linux-media@vger.kernel.org
Subject: Re: support autofocus / autogain in libv4l2
Date: Tue, 25 Apr 2017 10:08:15 +0200 [thread overview]
Message-ID: <20170425080815.GD30553@pali> (raw)
In-Reply-To: <20170425080538.GA30380@amd>
On Tuesday 25 April 2017 10:05:38 Pavel Machek wrote:
> > > It would be nice if more than one application could be accessing the
> > > camera at the same time... (I.e. something graphical running preview
> > > then using command line tool to grab a picture.) This one is
> > > definitely not solveable inside a library...
> >
> > Someone once suggested to have something like pulseaudio for V4L.
> > For such usage, a server would be interesting. Yet, I would code it
> > in a way that applications using libv4l will talk with such daemon
> > in a transparent way.
>
> Yes, we need something like pulseaudio for V4L. And yes, we should
> make it transparent for applications using libv4l.
IIRC there is already some effort in writing such "video" server which
would support accessing more application into webcam video, like
pulseaudio server for accessing more applications to microphone input.
--
Pali Rohár
pali.rohar@gmail.com
next prev parent reply other threads:[~2017-04-25 8:08 UTC|newest]
Thread overview: 111+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-14 12:20 [PATCH v3 0/2] v4l: Add camera voice coil lens control class, current control Sakari Ailus
2017-02-14 12:20 ` [PATCH v3 1/2] " Sakari Ailus
2017-02-14 22:47 ` Pavel Machek
2017-02-15 7:15 ` Sakari Ailus
2017-02-15 8:09 ` Pavel Machek
2017-02-20 22:26 ` Sakari Ailus
2017-02-20 22:48 ` Pavel Machek
2017-04-15 2:23 ` Mauro Carvalho Chehab
2017-04-15 7:12 ` Pavel Machek
2017-04-16 9:12 ` Sakari Ailus
2017-04-19 13:51 ` Mauro Carvalho Chehab
2017-04-24 9:30 ` support autofocus / autogain in libv4l2 Pavel Machek
2017-04-24 13:38 ` Mauro Carvalho Chehab
2017-04-24 21:29 ` Pavel Machek
2017-04-25 1:47 ` Mauro Carvalho Chehab
2017-04-25 8:05 ` Pavel Machek
2017-04-25 8:08 ` Pali Rohár [this message]
2017-04-25 11:23 ` Pavel Machek
2017-04-25 11:30 ` Pali Rohár
2017-04-25 12:28 ` Pavel Machek
2017-04-25 12:51 ` Pali Rohár
2017-04-25 16:55 ` Nicolas Dufresne
2017-04-25 16:51 ` Nicolas Dufresne
2017-04-25 16:53 ` Nicolas Dufresne
2017-04-26 10:53 ` Pavel Machek
2017-04-26 10:53 ` [patch] propagating controls in libv4l2 was " Pavel Machek
2017-04-26 11:13 ` Mauro Carvalho Chehab
2017-04-26 13:23 ` [patch] autogain support for bayer10 format (was Re: [patch] propagating controls in libv4l2) Pavel Machek
2017-04-26 15:43 ` Ivaylo Dimitrov
2017-04-26 22:51 ` Pavel Machek
2017-04-27 5:52 ` Ivaylo Dimitrov
2017-07-13 7:57 ` Pavel Machek
2017-05-03 19:05 ` Russell King - ARM Linux
2017-05-03 19:58 ` Pavel Machek
2017-05-08 22:28 ` [patch, libv4l]: fix integer overflow Pavel Machek
2017-05-09 6:29 ` Hans Verkuil
2017-05-09 6:32 ` Hans Verkuil
2017-05-09 8:02 ` Pavel Machek
2017-05-09 10:59 ` [patch, libv4l]: fix typos Pavel Machek
2017-05-09 11:01 ` [patch, libv4l]: Add support for GRBG10 format conversion Pavel Machek
2017-05-09 11:04 ` [patch, libv4l]: Introduce define for lookup table size Pavel Machek
2017-05-16 11:17 ` Hans Verkuil
2017-05-16 12:45 ` Pavel Machek
2017-05-16 12:56 ` Hans Verkuil
2017-05-16 23:23 ` Pavel Machek
2017-05-19 9:13 ` [libv4l]: How to do 10-bit support? Stand-alone conversions? Pavel Machek
2018-03-16 20:55 ` [RFC, libv4l]: Make libv4l2 usable on devices with complex pipeline Pavel Machek
2018-03-19 9:47 ` Hans Verkuil
2018-03-19 10:23 ` Pavel Machek
2018-03-19 10:47 ` Mauro Carvalho Chehab
2018-03-19 11:11 ` Hans Verkuil
2018-03-19 12:00 ` Pavel Machek
2018-03-19 12:15 ` Hans Verkuil
2018-03-19 12:48 ` Pavel Machek
2018-03-19 13:29 ` Hans Verkuil
2018-03-19 22:18 ` Pavel Machek
2018-03-19 13:45 ` Mauro Carvalho Chehab
2018-03-19 13:26 ` Mauro Carvalho Chehab
2018-03-20 7:50 ` Pavel Machek
2018-05-15 20:01 ` Pavel Machek
2018-05-15 22:03 ` Mauro Carvalho Chehab
2018-05-16 20:53 ` Pavel Machek
2018-06-02 21:01 ` Pavel Machek
2018-06-06 6:18 ` Tomasz Figa
2018-06-06 8:46 ` Pavel Machek
2018-06-06 8:53 ` Tomasz Figa
2018-06-06 10:01 ` Pavel Machek
2018-06-06 16:57 ` Mauro Carvalho Chehab
2018-06-06 21:27 ` Pavel Machek
2018-06-07 12:22 ` [PATCH, " Pavel Machek
2018-06-06 10:51 ` [RFC, " Pavel Machek
2018-06-06 11:16 ` Tomasz Figa
2018-06-06 20:37 ` Pavel Machek
2018-06-06 17:13 ` Mauro Carvalho Chehab
2018-06-06 10:23 ` Pavel Machek
2018-06-07 7:25 ` Pavel Machek
2017-05-09 11:10 ` [patch, libv4l]: fix integer overflow Pavel Machek
2017-05-16 10:42 ` Pavel Machek
2017-05-21 10:33 ` [patch, libv4l]: add sdlcam example for testing digital still camera functionality Pavel Machek
2017-05-26 20:41 ` Pavel Machek
2017-05-27 9:27 ` Hans Verkuil
2017-05-29 6:13 ` Hans Verkuil
2017-05-29 7:32 ` Pavel Machek
2017-05-29 8:02 ` Hans Verkuil
2017-06-14 11:16 ` Sakari Ailus
2017-06-14 20:41 ` Pavel Machek
2017-07-13 8:36 ` Pavel Machek
2017-05-09 8:07 ` [patch, libv4l]: fix integer overflow Pavel Machek
2017-04-30 22:48 ` [patch] autogain support for bayer10 format (was Re: [patch] propagating controls in libv4l2) Pavel Machek
2017-07-13 9:49 ` [patch] propagating controls in libv4l2 was Re: support autofocus / autogain in libv4l2 Pavel Machek
2017-04-26 11:26 ` Mauro Carvalho Chehab
2017-04-29 9:19 ` Pavel Machek
2017-10-21 22:00 ` Camera support, Prague next week, sdlcam Pavel Machek
2017-10-22 7:36 ` Hans Verkuil
2017-10-22 8:31 ` Pavel Machek
2017-10-23 18:54 ` Pavel Machek
2017-10-23 19:24 ` Hans Verkuil
2017-10-23 20:15 ` Sakari Ailus
2017-10-23 21:02 ` Mauro Carvalho Chehab
2017-10-31 21:28 ` Nokia N9: fun with camera Pavel Machek
2017-11-01 6:36 ` Pavel Machek
2017-11-01 15:32 ` Pavel Machek
2017-04-24 22:07 ` support autofocus / autogain in libv4l2 Pavel Machek
2017-04-25 1:57 ` Mauro Carvalho Chehab
2017-04-25 8:20 ` Pavel Machek
2017-04-25 11:23 ` Pavel Machek
2017-04-28 22:00 ` [PATCH v3 1/2] v4l: Add camera voice coil lens control class, current control Pavel Machek
2017-04-29 1:46 ` Mauro Carvalho Chehab
2017-05-12 10:49 ` Sakari Ailus
2017-05-13 11:08 ` Pavel Machek
2017-02-14 12:20 ` [PATCH v3 2/2] ad5820: Use VOICE_COIL_CURRENT control Sakari Ailus
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