Older blog entries for Marcus (starting at number 117)

Spent easter weekend at parents... without Internet, but with Laptop. So the WINE 0.9.12 SUSE packages have been a bit late, but are on Sourceforge and the ftp.suse.com/pub/people/ mirrors now.
For additional fun I now provide YUM metadata,

Add the YUM source ftp://ftp.suse.com/pub/people/meissner/wine/10.0/ (or 10.1) to get updates via YUM.

I spent the train travel and some quiet times hacking on several things:

  • More Nikon DSLR remote controllability. There are like 100 options to remote control on the Nikons, and libgphoto2 now supports like 90 of them.
  • MTP device meta data handling. MTP devices provide metadata, like Artist, Genre, Duration, etcetc... In a sideband from the actual MP3 file on the player. You need to call special functions to retrieve or send those databits from/to the device. I have enhanced libgphoto2 (and gphoto2) to allow a sideband "METADATA" stream to get and put those attributes.
  • Some speed tests on libgphoto2 ... It is taking quite some time to retrieve even the list of cameras. Serial device locking taking way too long, shared library loading and freeing madness, etc... all take its toll.
  • On the WINE side I spent some time splitting off the sane support from the twain_32.dll implementation. Two ideas for this: Add a libgphoto2 interface and allow native twain drivers. The latter are not terribly useful before getting their USB kernel level drivers to load, but it opens new possibilities.
Off for a new week with new security horrors.
8 Apr 2006 (updated 9 Apr 2006 at 10:19 UTC) »

Finally bitten the bullet and created a page of (libgphoto2) remote controllable cameras.

Your input is very welcome here, just drop me a mail if you have changes, additions or layout suggestions.

This is yet another time consuming activity. :/

Later today: Foto Safari through the Nuernberg Tiergarten/Zoo.

Finally received my new camera. My first DSLR, a Nikon D70s with the standard Kit 18-70mm objective. Now trying to familarize with it and take it out to Nuernberg walks with photo opportunities.

I made more of it configurable, but it has like 60 remote controllable configuration options... You can control everything that is configurable on the camera. Only the focal length you still have to pull by hand (at least with my objective).

On the WINE side ... 0.9.11 is out and I built the new RPMs for it. Now also with RPMs for the upcoming SUSE Linux 10.1. I tried debugging Google Earth, or better, where to make it confine the GL output into a subwindow ... But no dice so far.

I also bought a Creative Zen Microphoto for MTP device work. Applied several fixes which should make all Creative MTP devices work now with libgphoto2. Got notified of weird iRiver MTP firmware which violates the MTP protocol (and we need to hack around somehow :(). Coming soon here: MTP meta data retrieval and setting.

Regarding the LWN article &building the whole debian archive with GCC 4.1&...

Folks, SUSE Linux 10.1 (coming out soon) is compiled with GCC 4.1, and together with SLE 10 building all packages on: i586, x86_64, ia64, s390, s390x, ppc, ppc64 and we were tracking the GCC 4.1 development pretty closely and helping to fix the bugs. Redhat does the same thing. So that it builds lots of packages without much problems is not just thanks to the GCC team but also thanks to SUSE, Redhat, Gentoo, and other early adopters.

Hah, found the problem...

This patch makes the EHCI driver not support writes from userland with len==0 before 2.6.16.

And did I mention I stared for hours at the 2.6.16 driver version while testing against the 2.6.13 driver? *sigh*

Warm weekend ... So lots of outdoor activity.

However also some hacking...

I polished up my notes on the PTP/IP protocol. Portions of it are implemented in libgphoto2 already (usable for download from my Nikon P2 already).

I bought a Creative Zen Microphoto, a player supporting MTP. Found some bugs in the upload code, notably that mp3s were not mapped to the ptp PTP_OFC_MP3 object code.

Also on USB 2 interfaces there is a problem with uploading files dividable by 512 byte (the maxpacket size). The problem is that PTP / MTP requires a short write or NULL packet to finish sending of data. libgphoto2 currently does not do it.

Some devices seem to be able to cope without, some others don't. The MTP players on USB 2.0 (ehci) apparently do not. :(

An empty write helps on OHCI, but not on EHCI.

Happy St. Patricks day!

March ... Brainshare time. (Novell mains customer fair in Salt Lake City). Almost every Novell employee is there, at least if he/she is in Utah.

I am not, for reasons of budget and not really needing to be there. And I am happy too, because up to now I lived 32 years without having my fingerprints taken and I hope this stays so for a while.

Otherwise a quite busy week, discounting 2 days sickleave being down with the common cold.

Spring is still not arriving, but hopefully next week.

Now off for some Guinness with colleagues and good old friends.

Pictures from the openSUSE folks at FOSDEM are available. Its a best-of collection from all the guys who had digital cameras with them, exported by digikam, post edited by yours truly.

A full report will be posted soon I hope.

Lots of normal security work last week. Reviewed the new update programs (zmd / zen-updater / web-updater) in regards to their security models and similar.

Management training coming up this week, will take 3 of my days.

Some gphoto work, I reverse engineered the 9007 Nikon command to upload WLAN profiles. Now I just have to implement the configuration wrapper for it.

Back from FOSDEM with an uneventful flight.

It was a action filled and tiring weekend. Saw Richard Stallmanns Keynote on Software Patents, but no other talk in the main tracks. Helped staffing the openSUSE booth, handing out free T-Shirts and pins. Not much Internet over the days.

Only old non-Novell friend met was Heike, who is writing her second Linux book (on Debian).

My lecture on SUSE Security work went well, but only around 20 people saw it. You can catch it on Video later I hope.

Hotel was okay, except that I had a smokers room with old smoke still hanging very strong in the air, even on the second day. And the window in the main room would not open. *sigh*

Oh and on the second day we found out that we do not need to change tramlines/metro to go between Hotel and FOSDEM, but could just take the bus on the backside of the hotel that goes there directly.

Images and Slides later.

Busy week again. Holding presentation in front of potential customer on thursday, holding presentation in front of FOSDEM crowd on Sunday. Lots of slide preparations and review necessary. All this while juggling kernel updates, gpg updates, etc etc etc.

This also means if you go to FOSDEM, you can meet me and other SUSE developers there. Just ask at the openSUSE table / devroom.

My current PTP/IP work for libgphoto2 is now in the CVS tree. The part of the camera driver is still disabled (it needs a bit more work), the port handling is however in there and enabled. Its shaping up well.

The next major step will be reverse engineering the WLAN profile setup for the Nikons, so you do not need Windows the configure the WLAN of the camera.

No time for WINE work, except build RPMs for the 0.9.8 release.

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