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Re: need a video function in wheezy




On Friday 17 November 2017 10:49:20 David Christensen wrote:

> On 11/17/17 01:33, Gene Heskett wrote:
> > On Thursday 16 November 2017 23:33:43 David Christensen wrote:
> >> On 11/16/17 18:21, Gene Heskett wrote:
> >>> I have a machine vision utility for use on a CNC machine, that
> >>> uses gladevcp.
> >>>
> >>> But the launching script, in xml, is looking for a specific lib:
> >>>
> >>>    <requires lib="gtk+" version="2.24"/>
> >>>
> >>> which if it ever did exist in wheezy, was since removed.
> >>>
> >>> This script is of course editable, so are the functions that were
> >>> in this lib, now available in a different package? If so, likely
> >>> suspects please?
> >>
> >> What about libgtk-3-0?
> >>
> >> https://packages.debian.org/stretch/libgtk-3-0
> >
> > I have that, but this is wheezy, and the application has not yet
> > been built on stretch. Something about being incompatible with rtai
> > kernels newer than:
> >
> > gene@GO704:~/linuxcnc/configs/GO704fast$ uname -v
> > #1 SMP PREEMPT Debian 3.4.55-4linuxcnc
> >
> > as the app needs decent realtime performance.  It is running heavy
> > machinery.
> >
> > It also changes the error message by changing "gtk+" and "2.24" to
> > "gtk" and "3.0.0" which I have in /usr/lib/i386-linux-gnu. But the
> > video still doesn't work. It does work when using qv4l2 to view the
> > camera output. But an lsof while its running says it is not using
> > that particular library.
> >
> > This library overlays aiming target patterns like circles and
> > crosshairs on the video I believe.
> >
> > And a couple months back, it worked most of the time. It would fail
> > if the parent apps window for its display was drag expanded to more
> > than 480 pixels high.
> >
> > So how do I change this line in the xml launcher, so it works with
> > the newer version that I do have.
> >
> >    <requires lib="gtk+" version="2.24"/>
> >
> > This is what I have:
> > gene@GO704:~/linuxcnc/configs$ ls -laR /usr/lib/i386-linux-gnu|grep
> > libgtk drwxr-xr-x   2 root root     4096 Oct  5  2015 libgtk2.0-0
> > drwxr-xr-x   2 root root     4096 Jun  5  2016 libgtk-3-0
> > lrwxrwxrwx   1 root root       19 Oct 28 12:12 libgtk-3.so ->
> > libgtk-3.so.0.400.2 lrwxrwxrwx   1 root root       19 Oct 28 12:12
> > libgtk-3.so.0 -> libgtk-3.so.0.400.2 -rw-r--r--   1 root root 
> > 4990504 Apr 17  2016 libgtk-3.so.0.400.2 lrwxrwxrwx   1 root root   
> >    29 Oct 28 12:12 libgtksourceview-3.0.so.0 ->
> > libgtksourceview-3.0.so.0.0.0 -rw-r--r--   1 root root   492616 May
> > 15  2012 libgtksourceview-3.0.so.0.0.0 -rw-r--r--   1 root root 
> > 7216108 Aug  6  2012 libgtk-x11-2.0.a lrwxrwxrwx   1 root root      
> > 27 Oct 28 12:12 libgtk-x11-2.0.so -> libgtk-x11-2.0.so.0.2400.10
> > lrwxrwxrwx   1 root root       27 Oct 28 12:12 libgtk-x11-2.0.so.0
> > -> libgtk-x11-2.0.so.0.2400.10 -rw-r--r--   1 root root  4656508 Aug
> >  6  2012 libgtk-x11-2.0.so.0.2400.10
> > /usr/lib/i386-linux-gnu/libgtk2.0-0:
> > /usr/lib/i386-linux-gnu/libgtk-3-0:
> >
> > Note that the first 2 subdirs are empty, however there are
> > libgtk-this and that packages that are not installed. Perhaps one of
> > them is the "magic twanger" needed?
> >
> > Thanks David
>
> Re: need a video function in wheezy
>
> D'oh!  When replying to a post, I'm looking at the body of a message
> and tend to forget requirements stated solely in the subject line.
>
While I think the problem ought to be described in the subject of the 
OP. :)
>
> Have you searched through the releases of Wheezy to see if any have
> the specific version of the library you need?  If found, air-wall the
> machine, put in a new system drive, install that release, install the
> software, get it working, and never update.

That is not how my network is configured.  The app is itself under 
continuous development, with an average of 2 updates a week.

> Does anybody know if any hypervisors support real-time virtual
> machines?
>
>
> Otherwise, it's a matter of finding the software maintainer and
> convincing them to bring the software up to date.

That is beginning to sound like a worthwhile effort. But difficult when 
the names are all thats available in the README. Which I'll quote from 
here in case the publicity helps.

"Many Thanks from  Jacob Bogenschutz (bogie6040)  to the following:

Norbert Schechner (newbynobi)
Fernand Veilleux (FernV)
Slavko Kocjancic (eslavko)

They deserve all the credit, I just tweeked on they're stuff and put it 
together."

Just in case one of them is reading this list.. :)

> David

Thanks David.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>