But right now, I just wanted to correct some of the misinformation we saw:

• Question: when will E17 be released?
• Answer: Soon. No, seriously, I really mean it. Currently work is being done on finalizing a few remaining items of our Release Plan in order to make the first stable release of the libraries, which is the main focus of work right now. After that is done, then focus will be shifted to E17. But if you really want a date, I can’t give you one. Best I can do is say: “join us and help, and then the date will come sooner ”.

• Question: does EFL support OpenGL?
• Answer: YES, it does, both OpenGL and OpenGL-ES 2.0. There is much to be said on this topic, and some posts with more info and benchmarks are coming soon, but for now just rest assured that there is support for it and it’s kicking ass.

• Question: is it being  actively developed? Or is it just a bunch of people who are hacking on a project without future?
• Answer: there is a lot of development going on, and it’s most definitely not a project without future. There are many companies using EFL because the libraries are pretty good, fast and stable. And the libraries can be used for softwares that run by themselves, they definitely do not need E17 to be running. Some examples of projects using EFL are set-top boxes, airplane infotainment systems, etc.

• Question: why should I use the EFL instead of Qt or GTK+?
• Answer: the first reason would be because you prefer to use it. Seriously, give it a try. Other than that, if you’re doing a project for an embedded system, chances are the EFL might suit you better than the other two. There was heavy work on optimization done on the libraries, and they usually respond a lot better on smaller hardware than their counterparts. If you’re a designer or working closely with designers on a project, then that might also be a pretty good reason to check out Enlightenment (most specifically Edje).

• Question: how do I learn more about EFL? How can I help?
• Answer: documentation is something that we’re working on right now, and it’s one of the main areas we still need to improve a lot. A pretty good place to start is the document that my colleague Gustavo Lima wrote and which is available here. And if you decide you want to help (there are some low hanging fruit there, don’t be afraid) just join us at #edevelop on Freenode and hang there for some time, chances are you will quickly find something to do (and if you haven’t, just ask there and people will quickly find something for you).

That’s it for now. If you have any doubts, just get in touch.

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We’ll be talking about Google Summer of Code, Project Memphis, a kick-ass community project using Canola and also the pending release.

As part of the Maemo project umbrella, Canola got 5 slots for this year’s GSoC. The 5 approved projects were for new plugins for Canola, and now that GSoC has finished I believe it’s time to write a post showing some of the work that was done. Hopefully the students will keep doing new stuff not only on their plugins, but on Canola itself. The entire GSoC experience was quite interesting, and we’ve learned a lot during it and will try to make it even better next year. You can find more info about each plugin here, but let me show off a few screenshots.

Lauri Võsandi worked on a bittorrent plugin for Canola. It has support for fetching RSS feeds, searching within a few sites and also managing running instances of Transmission both on the tablet or somewhere else (though it does not depend on transmission to work stand-alone). This is a personal interest of mine, hopefully it will be coming to the maemo-extras repository soon so that others can try it out and if you have any suggestions for improvements here (and for the other plugins as well) send an email to the canola-devel mailing list.

Canola Bittorrent plugin

Thiago “bolaum” Borges Abdnur worked on a instant messaging client, which promises to bring quite some cool features to Canola. Some parts of his implementation used the awesome Elementary project from the Enlightenment Foundation Libraries (on which Canola is based). The plugin uses telepathy and therefore has support for all the major IM networks. Something to watch out for is integration between UPnP plugins and the awesome Bonjour network (which this plugin already supports), so Canola users could share media with no extra configuration of any kind, just search for your friend on the network and select what you want to send him.

Canola instant messaging plugin

Andrei Mirestean worked on a Picasa plugin, one of the most requested plugins for Canola. It already supports most of the features that Picasa users need, and last I heard Andrei was implementing support for geolocation on it (a first for Canola).

Canola Picasa plugin

Andrey Popelo worked on a Remember the Milk plugin with support for not only seeing tasks but also creating new ones and synching them. I still need to test this one better, been quite busy lately and haven’t had the time  yet, but it promises to be quite an interesting showcase of Canola being not only a media player but a kick-ass platform for developing all kinds of different applications. One thing I’d really like to see done on this plugin for the future is geolocation, so I could easily have TODO lists that were related to what I was doing at the time (work, shopping, etc.).

Canola Remember the Milk Plugin

And Kasun Herath worked on a Twitter plugin, which is already working for regular tweets and should have support soon for tweetpics (pardon me if the terminology is wrong, but I’m most definitely not a Twitter user).

Canola Twitter Plugin

Well, that’s it for the Summer of Code projects. If you’re interested in testing any of them, just go to their page on the Maemo wiki (linked above) and there should be up to date .debs there for you to try out.

Some of the guys at ProFUSION have worked lately on an in-car entertainment center called Project Memphis (video here). It’s a really sleek demonstration and we should be hearing more about it soon (I promise another blog post about it on a not too distant future).

Regarding the next release (the first as a Free Software project), it should happen quite soon, Eduardo “Etrunko” Lima is hard at work on it and it should be coming out any time now. I also heard he is working on a book, someone sent me a supposed cover for it but I’m not sure if it’s the real thing or not:

Maemo Packaging for dummies

Also, sometime ago Morgan Tørvolt sent me info about a car-pc project he was doing using Canola. His email was quite detailed, so I’m just going to paste it here (it has links to screenshots as well):

Hi luis,

As promised, I am sending you an e-mail with some pictures and text
related to my car-pc project.

Pictures: http://picasaweb.google.com/Morgan.Torvolt/20090601BilderAvBilPCen?authkey=Gv1sRgCNqFpeaJ65m9vgE&feat=directlink

Text:

After years of wishful thinking, and looking at different hardware and
setups, I managed to order parts for my Car PC about a year ago. The
build did take some time due to me always being busy. After that, I
have been trying to run KDE, Gnome, Linux ICE and others, hoping that
I woudl manage to set up a computer that works well as a media player
and GPS in my car.

When I came across Canola a while back (trough the Mer project), I was
instantly sure that this was what I needed. Finally a touchscreen
friendly media application for media playback.

I installed canola from svn, with good help from the guys at the
#canola IRC channel and some guides. After some initial startup
problems, I had my PC mounted in my car in about a day. I have been
using it there for a few weeks now, and it works very well.

I have been tweaking things back and forth for a while, running Canola
under KDE. This was not a very good solution, as the boot-up time is
very long, and I don’t need all the window manager stuff. I have now
managed to set the computer up so that boots right into an X session
that runs only Canola. No window manager or anything else. Boot time
is still a bit on the slow side, but after POST, it takes somewhere
around 15 seconds.

The system consists of:

CPU: Core Duo 1.83GHz
Motherboard: https://store.mp3car.com/ProductDetails.asp?ProductCode=MTB-016
Monitor: https://store.mp3car.com/ProductDetails.asp?ProductCode=MON-001
PSU: https://store.mp3car.com/ProductDetails.asp?ProductCode=PWR-015
Double DIN frame:
https://store.mp3car.com/ProductDetails.asp?ProductCode=DSH-012
GPS: i.Trek M7 USB
Wlan: Unknown USB dongle
I-bus: http://www.canusb.com/

The double din frame fits straight into my dashboard. The entire thing
takes up no more space than my old original stereo. I am very happy
with how that turned out. Fitting the screen was easy, as the case is
built to fit the screen. Fitting both PSU, motherboard, Harddrive and
all the other stuff was not so easy. Especially the long original
cabling that came with the screen was an issue. I had to make a custom
VGA plug, and connect the USB interface for the touch screen directly
to the motherboard and not to the rear USB connector. In fact, I
cannot use any of the rear connectors as there is not enough depth in
the dashboard for that. As you can see from the pictures, I have used
an angled connector for audio, and made a custom VGA connector.

I use a USB 2.0 hub that I will put in the glove compartment. I
connect the CANUSB, GPS, Wlan and potentially an external drive, mouse
or keyboard to that. I provide 5V power to the hub directly from the
PSU. I also drive the Lilliput screen from the PSU, but this is from
the 12V rail. This way everything is turned off properly when I stop
the car.

Future plans:

- First get the CANUSB device to grab data from the databus in my car,
so that I can grab the bottonpresses from the steering wheel buttons.
Secondly, I need to somehow get Canola to accept these presses,
probably trough a python daemon I will make. Next, previous, volume
+/- should be made to work. A way to use the buttons to move about in
the menusystem would also be nice. There has been some work done for
this communication on the I-bus. Volkswagen has to my knowledge added
networking componet that works similar to IP traffic to the latest
linux kernel. Maybe use this?
- To make this complete, I need to run a GPS application. The plan is
to use one of the steering-wheel buttons (the “next” button I guess)
to switch between Canola and Navit. Even better would be to embed
Navit in Canola somehow. The last option is probably the better one as
I am not running a windowmanager.
- My Saab 9-5 even has a built in amplifier. Unfortunately they have
chosen the professional version of audio signals, namely balanced
audio. This did not work well with a standard line out level, so now I
am using a ground loop isolator unit to be able to connect to the amp.
I am thinking of making a line level to balanced converter in order to
get higher volume and more bass than I get now.
- My Saab also has a built in microphone for handsfree. I wish to
connect this to the line in, and get a bluetooth device to connect to
my phone so that I get handsfree.
- Radio and TV support would be cool. Maybe Canola will support tuners
in the future?
- I wish to have something like Carman (
http://openbossa.indt.org/carman/ ) to be able to show stuff like
actual speed, rews, gas usage, gas milage and other interesting stuff
that I can grab off the databus of the car. There is quite a lot of
data available there (
http://pikkupossu.1g.fi/tomi/projects/i-bus/i-bus.html ).
- Add a rear facing camera that is activated when in reverse gear (
get this data from the car databus )
- Add a forward facing camera that detects street signs and speed
limit signs and informs the driver, much like what has been made
publicly available by Mercedes, and also Opel/Vauxhall lately.

I am very aware that I will not be able to do much of this in the near
future of course, but maybe I will get there someday? Probably I have
a car with all of this built-in by then…

Morgan Tørvolt

Awesome project Morgan, and thanks alot for the detailed information.

Well folks, that’s it.

15 0

Seventy Six trombones led the big parade
With a hundred and ten cornets close at hand …

Others have blogged about it already, but I still felt like I had to post something. Canola2 is now Free Software. We’ve been working on it since last year, and it has been quite an experience. As developer and team leader at ProFUSION, I can say that we’ve learned quite alot with this project and that we hope now with the release of the source code it will grow into a nice community.

I once heard that everytime a piece of proprietary software is released a puppy is born and angels sing Hallelujah in the sky. Don’t know if that is actually true, but either way, the source code is here and instructions for building it are here.

Google’s Summer of Code for 2009 has also started, and is now accepting student applications. Maemo got in as a mentoring organization, and I’ll be mentoring possible projects there (as will glima and antognolli from ProFUSION). There are a few ideas of plugins for Canola in Maemo’s suggested projects page. If you are eligible and want to develop for Canola, talk to us on irc.freenode.net at #canola.

5 0

For this release we went above and beyond the call of duty, doing tests that no one had ever done before (at least to our knowledge). That’s why we can say, with much confidence, that Canola works perfectly while drinking in Buenos Aires:

Canola in Buenos Aires

Testing in other capitals will ensue. Cheers !!!

11 0

Source code available here. Example podcast generated from my user here.

6 0

In order to use it, basically one just needs to get both llvm and clang (preferably from svn, since these tools are being updated all the time) and install them somewhere on the PATH, and afterwards use the scan-build script to build the application/library you want to analyze.The output is a nice set of html files, with the reported bugs divided by type and with detailed information + commented source code.

I’m trying to maintain updated reports on the EFL here, using a really simple script that I made to compile some of the most important libraries, apart from E itself. The script is also available on the same URL, in case someone wants an easy way of trying this out.

2 0