Planet SoC

This is another post about collection backends in Amarok. The others posts explained the switch to MySQL embedded and tried to address some of the concerns. Jefferai also wrote a few things about Nepomuk in Amarok (and why it will not fully replace the sql based collections) which I want to comment on and add to.

This is another post about collection backends in Amarok. The others posts explained the switch to MySQL embedded and tried to address some of the concerns. Jefferai also wrote a few things about Nepomuk in Amarok (and why it will not fully replace the sql based collections) which I want to comment on and add to.

There was quite a lot of interest in my gas measuring project using a mobile phone. Thanks for that. For all who requested the source: I packed it together and wrote a small readme. You can download it now.
There were doubts about the accuracy and if it will work at all. It is running for over a week now without any crash or other problems. It measured a gas usage of 14.81 m³ while the gas meter is showing 13.85 m³. That is a difference of 6.9%. Not perfect, but i can live with that and can try to reset the “burning duration -> volume” factor to reflect the difference.
I also have first usage graphs:

The last two weeks I haven’t done anything on KDE/Nepomuk/Amarok (Does that statement qualify for posting this on planetkde? ), but for a good reason: It’s getting cold outside.
So time to get back to an old project of me: I wanted to measure the gas usage of my gas heating in real-time and come up with the idea to use a mobile phone with a camera for that. The plan was to have the camera of a mobile phone looking on the burner and recognize if the flame is there or not. That should work under the assumption, that the burning duration is directly related to the used gas volume.
So I picked my old Nokia 6680 (Symbian S60 2nd FP2) (oh I am glad that you can now program it in Python using PyS60) and started work on a proof of concept.

If there was a blogger award for “Most likely to make timely posts”, then in no possible world would I even be considered for the award. I could list some excuses that sound legit in my head, but the real reason I don’t feel motivated to post often (or on time) is because I’d rather spend that time in Google Reader reading everyone else’s exciting content (that was not sarcastic).
So, lets see… last time I posted I was en route to Akademy 2008 (the KDE developers conference). That was July 30th, now, a month and a half later I am back from Europe (which was amazing), GSoC is over (sad), and class has started (jury’s still out).
Current Status of the MP3tunes Amarok Service
The Good (Works)

Here is the statistics made with sloccount.
wc -l result I like more (~8500) :D
lcp script shows 8904 contributed lines (for generated patch).

Lines:
SLOC Directory SLOC-by-Language (Sorted)
1752 dvcs cpp=1751,sh=1
1220 git cpp=1219,sh=1
610 bazaar cpp=513,ansic=97
416 mercurial cpp=415,sh=1

Totals grouped by language (dominant language first):
cpp: 3898 (97.50%)
ansic: 97 (2.43%)
sh: 3 (0.08%)

FileCount:
#Files Directory #Files-by-Language (Sorted)
23 dvcs cpp=22,sh=1
13 git cpp=12,sh=1
11 bazaar cpp=10,ansic=1
10 mercurial cpp=9,sh=1

Unfortunately GSoC has finished. It was a wonderful adventure: I got new friends, wrote some code (~8350 lines) and learnt new interesting things. I can say that after today’s commit to my git repo (with a lot of changes to yesterday’s commit, which is evaluted) I implemented all things I promised. But some things still require a lot of love.
I want to thank all people helped me during this summer:
Alexander Dymo(adymo, KDevelop) — My mentor who is strong both in GUI and Git.
Andreas Pakulat(apaku, KDevelop) — The man who can help with any part of KDevelop(or maybe even ith whole KDE && Qt).
Shawn O. Pearce (spearce, Git) — A man who is not in KDE, but who contacted my mentor and me to suggest his help.
Marco Costalba — QGit author, explained a lot of code from QGit.
Paul Mackerras — Gitk author, explained some basic algorithm (building rev history).
All guys from different IRC channels, mailinglist.

Unfortunately GSoC has finished. It was a wonderful adventure: I got new friends, wrote some code (~8350 lines counted by “wc -l”, so it includes all crap) and learnt new interesting things. I can say that after today’s commit to my git repo (with a lot of changes to yesterday’s commit, which is evaluted) I implemented all things I promised. But some things still require a lot of love.
I want to thank all people helped me during this summer:
Alexander Dymo(adymo, KDevelop) — My mentor who is strong both in GUI and Git.
Andreas Pakulat(apaku, KDevelop) — The man who can help with any part of KDevelop(or maybe even ith whole KDE && Qt).
Shawn O. Pearce (spearce, Git) — A man who is not in KDE, but who contacted my mentor and me to suggest his help.
Marco Costalba — QGit author, explained a lot of code from QGit.
Paul Mackerras — Gitk author, explained some basic algorithm (building rev history).

I had a lot of non-development problems, but this week I continued to develop my GSoC project (it’s the last thing, that can be evaluted, but improved — yesterday’s code is very buggy xD).
So here this thing is:

The only thing to implement is branch labels.
Current implementation is very dirty, but it works, the code: http://repo.or.cz/w/kdevelopdvcssupport.git?a=blob;f=plugins/git/gitexec…

Well, GSoC is almost ending now officially. I am amazed how the time passed so fast.
All and all, it has really been a very nice experience. I have learnt so much and I am really thankful to Google and KDE. Especially I should thank my mentor Riddell, because I always end up doing different than what I communicate with him and he bears that :)

One important lesson I have learnt is how crucial execution of planning is. To be honest, I over planned most of the time and my execution of the plan was haphazard. This can be attributed to gsoc-08 being my first time-tested and planned project.
But importantly I have been productive (atleast in my terms ;) ) and also probably the saying “Aim for sky, you will land up on stars” has worked for me.