The adventures of Foo » Programmieren

Rygel XBox support update

Jens — Sun, 14 Mar 2010 19:05:50 +0000

XBox support still has not landed in rygel master, though the branch gets more stable currently. I put together a wiki page to describe the necessary quirks together with a helper script.

Fake rpm database in ubuntu

Jens — Mon, 11 Jan 2010 11:17:12 +0000

At work I’m currently developing software which is supposed to run on openSUSE. I need to query the package database at some point which of course does not exist on my ubuntu machine. Here’s a quick setup how to create a fake local RPM database:

echo "%_dbpath /home/user/rpmdb" >> ~/.rpmmacros
mkdir /home/user/rpmdb
rpm -i --nodeps --justdb --force-debian *.rpm

And that’s it.

(Gnu-)Tar option of the day

Jens — Mon, 11 Jan 2010 10:54:09 +0000

--exclude-vcs

pmp 0.1 released

Jens — Sun, 27 Dec 2009 13:25:49 +0000

I just uploaded pmp 0.1 – Poor man’s prism desktop web application creator to github: http://github.com/phako/pmp

A release tarball can be found here: pmp-0.1.tar.gz

What is pmp?

pmp shares some similarities to Mozilla’s Prism. It creates a “standalone” app from a web application. Pmp uses Webkit as its rendering backend.

How do I use it?

To create an edge (that is pmp’s terminus for a captured app), run
pmp-create --url= --name=
You can also create a desktop icon by passing it the --desktop parameter. If you want to use the site’s favicon, use --icon=:favicon

To run the edge, call pmp-run --name=

Known limitations:
It does not work properly with Google’s apps. Google does some weird URL redirects. I’m working on that. Apps known to work are WordPress and TT RSS.

Location-dependant IGMP

Jens — Fri, 04 Sep 2009 19:28:20 +0000

Could someone please enlighten me?

I spent a third of my work today wondering why

a modified QUdpSocket only leads to IGMPv1 membership reports
a self-written plain old socket multicast client only leads to IGMPv2 joins, but very seldom leaves

Now being at home, I tried both programs and both reliably send IGMPv3 joins and leaves…

Smart pointers…

Jens — Mon, 17 Aug 2009 10:08:35 +0000

Can someone explain me the following behaviour:

I have the following smart pointer:

class AlsaHwParams
{
public:
    AlsaHwParams() : m_params(0) 
    { snd_pcm_hw_params_alloca (&m_params); }
 
    ~AlsaHwParams() 
    { if (m_params != 0) snd_pcm_hw_params_free (m_params); }
 
    operator snd_pcm_hw_params_t*() { return m_params; }
private:
    snd_pcm_hw_params_t *m_params;
};

Thing is: It doesn’t work. Alsa behaves very strange if I use it. Even if I make the m_params member public and access it directly. The only way it works is to not allocate from inside the class but outside like

snd_pcm_hw_params_alloca (&(hwparams.m_params));

Update: Seems replacing _alloca with _malloc fixes it.
Update: Duh, that is because alloca allocates on stack and not on heap.

Mono vs. COM

Jens — Tue, 04 Aug 2009 10:05:41 +0000

Please. I have nothing against C# in general or Mono. But please, please do not encourage the use of something as broken as COM, even if it’s to ease the bridging between C# and C++.

Thank you for your attention.

Concerning gnupg…

Jens — Wed, 29 Jul 2009 09:17:07 +0000

I wrote earlier about compiling libgpgme for use with Visual Studio. Forgot to mention that this is an useless effort because the filedescriptor passing does not work and as such you can only encrypt decrypt from or to memory.

Butter

Jens — Mon, 29 Jun 2009 10:48:57 +0000

While developing with Vala I found myself writing some stuff over and over again. So I decided to make a library out of it: Libbutter. Currently only available via git on http://github.com/phako/butter

GUPnP on windows howto

Jens — Fri, 15 May 2009 12:35:25 +0000

I threw together some instructions on how to build the GUPnP stack on windows: