gmane.comp.multimedia.libavg.user

Re: Libavg - Archicteture ARM

Richard Klemm — 2013-04-25T14:14:17

There is a wiki page https://www.libavg.de/site/projects/libavg/wiki/RPI for the raspberry pi. 
Other arm systems should be similar. 

Also, there is this thread https://www.libavg.de/site/boards/1/topics/49?r=88#message-88 with so me information.

Feel free to ask if you run into trouble


Alfred <andree.tago-Re5JQEeQqe8AvxtiuMwx3w< at >public.gmane.org> wrote:

Re: Libavg - Archicteture ARM

Alfred — 2013-04-25T13:15:20

have you any tutorial about cross-compilation of libavg for ARM Architecture ??
Please Help

Moving to Forums

Ulrich von Zadow — 2012-06-10T21:15:11

Hi everyone,

we're shutting down the libavg mailing lists and moving to forums and a development blog. This should give us a bit more exposure. Forums have a lower barrier to entry than mailing lists, since you don't need to subscribe to a list anymore. A blog is way better than the occasional 'new release' mail anyway :-). I'll be blogging about the development progress irregularly so you can keep up-to-date. 

Here are the forums: https://www.libavg.de/site/projects/libavg/boards
And this is the blog: https://www.libavg.de/blog/

Enjoy!

Cheers,

  Uli

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Re: libavg and GUI

Ulrich von Zadow — 2012-05-07T09:12:41

On May 6, 2012, at 7:46 AM, marco-JBTa0uP8wUjJXUHYzB81Bw< at >public.gmane.org wrote:



Currently, libavg always renders into it's own window. You'd need to modify libavg itself to make it render into a wvPanel.

You could try to rig something using a hidden/offscreen libavg window and regular screenshots, but that's bound to be messy. Or you can just write the whole thing in libavg ;-).

Cheers,

  Uli

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libavg and GUI

2012-05-06T05:46:42

You can place a canvas, with the node and players, in a wxPanel?
Perhaps you can tell how a parent wxPanel?
I would like to create a GUI in which display different video-monitors.

thanks

Re: libavg + 3D OpenGL rendering

Ulrich von Zadow — 2012-04-15T20:47:07

Hi Tomek,

you can write plugins in C++ that have full access to OpenGL and a python interface:

  http://www.libavg.de/site/projects/libavg/wiki/Plugins

Regards,

  Uli

On Apr 15, 2012, at 7:35 PM, Tomasz Koziara wrote:


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libavg + 3D OpenGL rendering

Tomasz Koziara — 2012-04-15T17:35:36

Dear libavg Users/Developers

I would like to use libavg multitouch capablilites in a research code  
that needs to display large 3D scenes (meshes, points, vectors, etc.).  
After reading the "Programmer's Guid" I am a bit confused:

It seems like only 2D drawing is supported and only through a small  
subset of provided functions. My question is then:

I would like to use libavg in my own application that already extends  
python with a subset of commands. I would like to implement rendering  
of my 3D objects in C and provide an interface for it in Python. Then  
I would like to use this Python interface in LIBAVG to render the 3D  
data.

Can the above be easily done?

Best regards,
Tomek

Re: Player v1.5 crashes randomly on Ubuntu 10.04

Max Jiang — 2012-02-09T10:07:16

Hi Uli,
Thanks for the reply. I forgot to mention that I am running a project called Xibo of which the python client (v1.2) is based on libavg v1.5. It runs fine for a few hours or so before hitting the errors.
Cheers,Max

From: uzadow-tTRsYrX9OW+zQB+pC5nmwQ< at >public.gmane.org
Date: Thu, 9 Feb 2012 10:22:03 +0100
To: libavg-users-GL87kEHHolVn68oJJulU0Q< at >public.gmane.org
Subject: Re: [libavg-users] Player v1.5 crashes randomly on Ubuntu 10.04

Hello Max,
you're running old versions of libavg and Ubuntu and you're not saying what code you're running, which makes it pretty much impossible to actually find the error. Do the testcases run? From my experience, the graphics drivers for Atom on-board graphics weren't very stable at the time of Ubuntu 10.04. Try upgrading libavg and Ubuntu and see what happens.
In general, Ubuntu on Atom should be a supported plattform.
Cheers,
  Uli
On Feb 9, 2012, at 6:17 AM, Max Jiang wrote:Hello,
I have experienced random crashes which sometimes give "segmentation faults" and oth

Re: Player v1.5 crashes randomly on Ubuntu 10.04

Ulrich von Zadow — 2012-02-09T09:22:03

Hello Max,

you're running old versions of libavg and Ubuntu and you're not saying what code you're running, which makes it pretty much impossible to actually find the error. Do the testcases run? From my experience, the graphics drivers for Atom on-board graphics weren't very stable at the time of Ubuntu 10.04. Try upgrading libavg and Ubuntu and see what happens.

In general, Ubuntu on Atom should be a supported plattform.

Cheers,

  Uli

On Feb 9, 2012, at 6:17 AM, Max Jiang wrote:


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Any technology distinguishable from magic is insufficiently advanced.

Ulrich von Zadow | +49-172-7872715
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Player v1.5 crashes randomly on Ubuntu 10.04

Max Jiang — 2012-02-09T05:17:33

Hello,
I have experienced random crashes which sometimes give "segmentation faults" and other times list backtraces and memory maps before quitting the player. The errors appear to be different each time.
I have libavg v1.5 installed on 3 machines (Intel Atom D525, 2G DDR3) all running Ubuntu 10.04 and they all have experienced the same problem.
I tried running using gdb and please find the stack trace file attached.
With all the tests I have run so far, I can conclude there are 3 types of errors:
1. *** glibc detected *** /usr/bin/python: malloc(): memory corruption:  ***
2. *** glibc detected *** /usr/bin/python: free(): invalid pointer:  ***
3. *** glibc detected *** /usr/bin/python: corrupted double-linked list:  ***


Any idea? Any suggestions/thoughts are very much appreciated. Thank you in advance.
Cheers,
Max
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Re: Issue about References to Derived Nodes

Ulrich von Zadow — 2012-02-01T20:16:19

Hi Tao,

python variables are always references. So, in the code example you copied, textRect and textRect.rect.getParent() are both references to the same actual node, the issue being that the reference you get from getParent() is broken. So, 'keep a reference around' basically means: Don't use getParent() or similar functions to get at nodes if you've subclassed them. Have your own variables arount that point at the nodes.

Cheers,

  Uli

On Feb 1, 2012, at 2:03 PM, tao ira wrote:


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Issue about References to Derived Nodes

tao ira — 2012-02-01T13:03:18

Hi,

I have got a question while reading article Subclassing in Programming
Guide. In some cases, libavg forgets the class of a derived node and
returns an object of the base class. Like this:

<class 'subclass.TextRect'>
<class 'libavg.avg.DivNode'>


One of the provided solution in this article is to Keep a reference to the
derived node around in python. What does it mean by saying "Keep a
reference to"? Because after several times' trying, I still couldn't do it
right, maybe it is because I am new to python and failed to get the basic
idea of this sentence. Can anyone help and explain more about it?

Thank you very much!

libavg 1.7.1

Ulrich von Zadow — 2012-01-28T18:27:01

Hi,

we've released libavg 1.7.1. This is mostly a bugfix release, but it's also the first UI library to support the new Linux multitouch standard XInput 2.2. The release will be distributed with Ubuntu 12.04.

http://www.libavg.de/wiki/DownLoad

Cheers,

  Uli

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Re: Libavg - Archicteture ARM

Ulrich von Zadow — 2012-01-26T11:13:11

On Jan 26, 2012, at 11:01 AM, Francesco D'Aluisio wrote:


We've done the first bit of work for this by switching to a real matrix library (glm) in the background. The next steps are:

- Replace all coordinate transforms (glRotate etc.) by glm matrix calculations.
- Switch to a minimal vertex shader for the vertex stage.
- Go through the rest of the OpenGL calls and replace where necessary. This is probably not very hard.

Sorry, no roadmap with deadlines. I don't want to promise things I might not keep.

Cheers,

  Uli

--
Any technology distinguishable from magic is insufficiently advanced.

Ulrich von Zadow | +49-172-7872715
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Libavg - Archicteture ARM

Francesco D'Aluisio — 2012-01-26T10:01:10


there is a chance to see this soon?
there is a roadmap for supporting OpenGL ES?

Thanks

Lion compatibility

Ulrich von Zadow — 2012-01-24T11:30:14

Hi,

I've just uploaded a new Mac installer (version 1.7.1) that fixes some issues under Lion.

libavg does not build yet under Lion. Is there anyone that depends on this? If so, I'll try to get it to work soon.

Cheers,

  Uli

--
Any technology distinguishable from magic is insufficiently advanced.

Ulrich von Zadow | +49-172-7872715
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Re: libavg 1.7

Ulrich von Zadow — 2012-01-15T12:29:07

Fixed :-).

On Jan 7, 2012, at 9:15 AM, Ulrich von Zadow wrote:


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Re: libavg 1.7

Ulrich von Zadow — 2012-01-07T08:15:26

Thanks for the heads-up.

This is a bug in the installer - I'll probably have time to fix it next week.

Cheers,

  Uli

On Jan 2, 2012, at 5:01 PM, Sergej Forat wrote:


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Re: libavg 1.7

Ulrich von Zadow — 2012-01-07T08:15:26

Thanks for the heads-up.

This is a bug in the installer - I'll probably have time to fix it next week.

Cheers,

  Uli

On Jan 2, 2012, at 5:01 PM, Sergej Forat wrote:


--
Any technology distinguishable from magic is insufficiently advanced.

Ulrich von Zadow | +49-172-7872715
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Skype: uzadow



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Re: libavg 1.7

Ulrich von Zadow — 2012-01-07T08:15:26

Thanks for the heads-up.

This is a bug in the installer - I'll probably have time to fix it next week.

Cheers,

  Uli

On Jan 2, 2012, at 5:01 PM, Sergej Forat wrote:


--
Any technology distinguishable from magic is insufficiently advanced.

Ulrich von Zadow | +49-172-7872715
Jabber: coder-BnlerGaajfUdnm+yROfE0A< at >public.gmane.org
Skype: uzadow



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Re: libavg 1.7

Sergej Forat — 2012-01-02T16:01:08

The CMU 1394 Digital Camera Driver 
<http://www.cs.cmu.edu/%7Eiwan/1394/download.html> is also required for 
the 1.7 binary (release installer).

It is listed in http://www.libavg.de/wiki/WinSourceInstall but not in 
http://www.libavg.de/wiki/ReleaseInstall.

Without the driver all you'll see is:

C:\Python27\Lib\site-packages\libavg\test>Test.py
Traceback (most recent call last):
   File "C:\Python27\Lib\site-packages\libavg\test\Test.py", line 99, in 
<module>

     import testapp
   File "C:\Python27\Lib\site-packages\libavg\test\testapp.py", line 28, 
in <modu
le>
     import libavg
   File "C:\Python27\lib\site-packages\libavg\__init__.py", line 9, in 
<module>
     from avg import *
ImportError: DLL load failed: Das angegebene Modul wurde nicht gefunden.

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