Breaking Eggs And Making Omelettes

Topics On Multimedia Technology and Reverse Engineering


SQLite: The Ultimate Serialization Format?

October 16th, 2008 by Multimedia Mike

When I started this FATE journey, the easiest approach for getting build results from a build client up to the FATE server was to use the direct MySQL protocol:

Direct MySQL protocol method

This is not an accepted way to do things in this day and age. It is more common to funnel the data via HTTP to the server. I resisted this at first because the direct database protocol method was working fine. But it seems that Python’s MySQLdb module is not portable to as many platforms as I would like to see FATE run on. At the same time, 8 months of FATE experience has shown the direct db protocol to be the weakest link of the whole endeavor. If connection is lost during the database operation, the whole script bails out with a Python exception and must be restarted manually. I realize that reading the MySQLdb-python documentation would probably allow me to deal gracefully with such failures and allow the script to continue. Another, more hackish solution would be to put the script in an infinite loop via the shell so that it would restart after a failure.

Here’s the thing: So what if I could handle the failure gracefully from within the Python script? What do I do then? Read the rest of this entry »

Posted in FATE Server | 6 Comments »


October 14th, 2008 by Multimedia Mike

I recently learned of a low-cost, ARM-based board called the Beagle Board. I have been entertaining the idea of purchasing one for testing FFmpeg via FATE. It wouldn’t fit into the current FATE paradigm, though. I envision that another machine would have to cross compile the ARM binary and then tell the Beagle Board to execute the series of tests using the binary.

Posted in FATE Server | 3 Comments »

Further Adventures In Geeky Plates

October 7th, 2008 by Multimedia Mike

Another geeky license plate observed here in the San Francisco bay area: ‘DMACH5’. The best I can think of is direct memory access (DMA) channel #5. Or perhaps DMA controller H5. I can’t possibly come up with any kind of cosmic, or technological significance for DMA channel 5. But someone thought it was unique enough to slap on his Lexus.

Then I saw ‘EFG FTW’. At first I thought the driver was just enthusiastic about medical equipment. But I realized I was thinking of EKG. My best guess is that this driver is, or was, a member of a pro gaming group named EFGaming that was apparently based in the area. That makes more sense.

Posted in General | 6 Comments »

Mini Considerations

October 6th, 2008 by Multimedia Mike

I’ve been using Linux for 10 years now. I have successfully installed many distributions on a wide variety of computer systems. Well, desktop boxes, to be specific. More recently, you may have heard of a new class of machines gaining popularity: the so-called subnotebook, a.k.a. netbook. I have an early Asus Eee PC specimen. I like it, but it could be better. You might think that it would be easily tweakable to fit my exact tastes. Let’s break that down a bit.

Things that the Eee PC’s default Xandros-influenced installation does very well:

  • drive the Eee PC’s 7-inch 800×480 display
  • drivers for its wifi
  • drivers for its ethernet
  • automounting of SD card
  • automounting of optical discs via external USB drive
  • drivers for its audio output
  • hooks for all of the Eee’s special function keys (volume, muting, wifi toggle, screen settings)
  • unobtrusive application to monitor battery level
  • proper suspend support (not that it’s really necessary since the unit boots and shuts down so quickly)

Things that the default installation does not do well:

  • package management (I think the latest Firefox available is and forget about Firefox 3 series since the system doesn’t have a recent enough version of GTK); the default install has a selection of common software but it becomes difficult to deviate at all

It’s possible to add more URLs to the Debian-style package manager. But every time I do that, I eventually end up with a complete mess of conflicting software.

So there’s the possibility of installing your own OS. However, you run the very real risk of losing all of the benefits enumerated above. Many distros are trying to step up to the challenge, though. One of the first I heard about was eeebuntu, a customized version of the popular Ubuntu distribution. I tried it. It didn’t boot on my Eee 701. There is an eeedora distribution, based on the Fedora distro, that claims to have its act together and is a possible candidate. Then there’s Gentoo, which can certainly do anything that Linux is advertised to do. A favorite hacker’s distribution; a little searching turns up some easy 76-step (or so) guides to getting Gentoo to run on the Eee with some fraction of the above features eventually functional.

I was about to acquiesce and revert back to the stock Eee-Xandros when I learned about Ubuntu-Eee today, which is different than eeebuntu. Bottom line: Very nice. It’s based on Ubuntu 8.04.1 and has the solid package management that you would expect. The screen works at the proper resolution. The wireless works out of the box (not sure if the ethernet works). Automounting of sdcard is there. I was worried about lack of a battery meter until I unplugged the power– that’s when the battery meter showed up, along with a dialog that the power was disconnected. The brightness function keys even work. Not all the special function keys work correctly, though. The wireless toggle signals the wireless to be shut down but does not actually turn off the wireless as indicated by the Eee’s LED. And I can’t fix the wireless state without a reboot. And the volume up/down/mute keys are useless– audio is always on. Not even the volume slider on the panel UI does anything.

Still, this is better than I expected. I may still be able to get some use out of this Eee PC yet.

Very promising stuff, all around. There are also rumblings that Mandriva wants to work with netbook manufacturers to provide netbook-tailored distributions. This sounds like a good plan since most evidence seems to indicate that the manufacturers are good at hardware and not software, and are pushing these units out the door as fast as possible with little regard to end user experience. It would be nice if they would collaborate better with the people who know software. Otherwise, we will continue to read stories like the current crop making the rounds stating that few customers seem to be happy with the default Linux netbook experience.

Posted in General | 2 Comments »

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