From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1947004AbdDYLaV (ORCPT ); Tue, 25 Apr 2017 07:30:21 -0400 Received: from mail-wr0-f195.google.com ([209.85.128.195]:32955 "EHLO mail-wr0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1946892AbdDYLaN (ORCPT ); Tue, 25 Apr 2017 07:30:13 -0400 Date: Tue, 25 Apr 2017 13:30:09 +0200 From: Pali =?utf-8?B?Um9ow6Fy?= To: Pavel Machek Cc: Mauro Carvalho Chehab , sre@kernel.org, kernel list , linux-arm-kernel , 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 , linux-media@vger.kernel.org Subject: Re: support autofocus / autogain in libv4l2 Message-ID: <20170425113009.GH30553@pali> References: <20170414232332.63850d7b@vento.lan> <20170416091209.GB7456@valkosipuli.retiisi.org.uk> <20170419105118.72b8e284@vento.lan> <20170424093059.GA20427@amd> <20170424103802.00d3b554@vento.lan> <20170424212914.GA20780@amd> <20170424224724.5bb52382@vento.lan> <20170425080538.GA30380@amd> <20170425080815.GD30553@pali> <20170425112330.GB7926@amd> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20170425112330.GB7926@amd> User-Agent: Mutt/1.5.23.1 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tuesday 25 April 2017 13:23:30 Pavel Machek wrote: > Hi! > On Tue 2017-04-25 10:08:15, Pali Rohár wrote: > > 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. > > Do you have project name / url / something? Pinos (renamed from PulseVideo) https://blogs.gnome.org/uraeus/2015/06/30/introducing-pulse-video/ https://cgit.freedesktop.org/~wtay/pinos/ But from git history it looks like it is probably dead now... -- Pali Rohár pali.rohar@gmail.com