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Friday, May 19, 2006

This interview intends to provide some insight into OpenSync, an upcoming free unified data synchronization solution for free software desktops such as KDE, commonly used as part of the GNU/Linux operating system.

Hi Cornelius, Armin and Tobias. As you are now getting close to version 1.0 of OpenSync, which is expected to become the new synchronisation framework for KDE and other free desktops, we are quite interested in the merits it can provide for KDE users and for developers, as well as for the Open Source Community as a whole. So there’s one key-question before I move deeper into the details of OpenSync:

What does OpenSync accomplish, that no one did before?

Cornelius:

First of all it does its job of synchronizing data like addressbooks and calendars between desktop applications and mobile devices like PDAs and cell phones.

But the new thing about OpenSync is that it isn’t tied to a particular device or a specific platform. It provides an extensible and modular framework that is easy to adopt for application developers and people implementing support for syncing with mobile devices.

OpenSync is also independent of the desktop platform. It will be the common syncing backend for at least KDE and GNOME and other projects are likely to join. That means that the free desktop will have one common syncing solution. This is something really new.

How do the end-users profit from using synching solutions that interface with OpenSync as framework?

Cornelius:

First, the users will be able to actually synchronize all their data. By using one common framework there won’t be any “missing links”, where one application can sync one set of devices and another application a different one. With OpenSync all applications can sync all devices.

Second, the users will get a consistent and common user interface for syncing across all applications and devices. This will be much simpler to use than the current incoherent collection of syncing programs you need if you have more than the very basic needs.

How does OpenSync help developers with coding?

Cornelius:

It’s a very flexible and well-designed framework that makes it quite easy for developers to add support for new devices and new types of data. It’s also very easy to add support for OpenSync to applications.

The big achievement of OpenSync is that it hides all the gory details of syncing from the developers who work on applications and device support. That makes it possible for the developers to concentrate on their area of expertise without having to care what’s going on behind the scenes.

I have written quite a lot of synchronization code in the past. Trust me, it’s much better, if someone just takes care of it for you, and that’s what OpenSync does.

Tobias:

Another point to mention is the python wrapper for opensync, so you are not bound to C or C++, but can develop plugins in a high level scripting language.

Why should producers of portable devices get involved with your team?

Cornelius:

OpenSync will be the one common syncing solution for the free desktop. That means there is a single point of contact for device manufacturers who want to add support for their devices. That’s much more feasible than addressing all the different applications and solutions we had before. With OpenSync it hopefully will become interesting for manufacturers to officially support Linux for their devices.

Do you also plan to support applications of OpenSync in proprietary systems like OSX and Windows?

Cornelius:

OpenSync is designed to be cross-platform, so it is able to run on other systems like Windows. How well this works is always a question of people actually using and developing for this system. As far as I know there isn’t a real Windows community around OpenSync yet. But the technical foundation is there, so if there is somebody interested in working on a unified syncing solution on Windows, everybody is welcome to join the project.

What does your synchronisation framework do for KDE and for KitchenSync in particular?

Cornelius:

OpenSync replaces the KDE-specific synchronization frameworks we had before. Even in KDE we had several separate syncing implementations and with OpenSync we can get replace them with a common framework. We had a more generic syncing solution in KDE under development. This was quite similar from a design point of view to OpenSync, but it never got to the level of maturity we would have needed, because of lack of resources. As OpenSync fills this gap we are happy to be able to remove our old code and now concentrate on our core business.

What was your personal reason for getting involved with OpenSync?

Cornelius:

I wrote a lot of synchronization code in the past, which mainly came from the time where I was maintaining KOrganizer and working on KAddressBook. But this always was driven by necessity and not passion. I wanted to have all my calendar and contact data in one place, but my main objective was to work on the applications and user interfaces handling the data and not on the underlying code synchronizing the data.

So when the OpenSync project was created I was very interested. At GUADEC in Stuttgart I met with Armin, the maintainer of OpenSync, and we talked about integrating OpenSync with KDE. Everything seemed to fit together quite well, so at Linuxtag the same year we had another meeting with some more KDE people. In the end we agreed to go with OpenSync and a couple of weeks later we met again in Nuernberg for three days of hacking and created the KDE frontend for OpenSync. In retrospect it was a very pleasant and straightforward process to get where we are now.

Armin:

My reason to get involved (or better to start) OpenSync was my involvement with its predecessor Multisync. I am working as a system administrator for a small consulting company and so I saw some problems when trying to find a synchronization solution for Linux.

At that point I joined the Multisync project to implement some plugins that I thought would be nice to have. After some time I became the maintainer of the project. But I was unhappy with some technical aspects of the project, especially the tight coupling between the syncing logic and the GUI, its dependencies on GNOME libraries and its lack of flexibility.

Tobias:

Well, I have been a KDE PIM developer for several years now, so there was no way around getting in touch with synchronization and KitchenSync. Although I liked the idea of KitchenSync, I hated the code and the user interface […]. So when we discussed to switch to OpenSync and reimplementing the user interface, I volunteered immediately.

Can you tell us a bit about your further plans and ideas?

Cornelius:

The next thing will be the 1.0 release of OpenSync. We will release KitchenSync as frontend in parallel.

Armin:

There are of course a lot of things on my todo and my wishlist for opensync. For the near future the most important step is the 1.0 release, of course, where we still have some missing features in OpenSync as well as in the plugins.

One thing I would really like to see is a thunderbird plugin for OpenSync. I use thunderbird personally and would really like to keep my contacts up to date with my cellular, but I was not yet able to find the time to implement it.

Tobias:

One thing that would really rock in future versions of OpenSync is an automatic hardware detection mechanism, so when you plugin your Palm or switch on your bluetooth device, OpenSync will create a synchronization group automatically and ask the user to start syncing. To bring OpenSync to the level of _The Syncing Solution [tm]_ we must reduce the necessary configuration to a minimum.

What was the most dire problem you had to face when creating OpenSync and how did you face it?

Cornelius:

Fortunately the problems which I personally would consider to be dire are solved by the implementation of OpenSync which is well hidden from the outside world and [they are] an area I didn’t work on 😉

Armin:

I guess that I am the right person to answer this question then 🙂

The most complicated part of OpenSync is definitely the format conversion, which is responsible for converting the format of one device to the format that another device understands.

There are a lot of subsystems in this format conversion that make it so complex, like conversion path searching, comparing items, detection of mime types and last but not least the conversion itself. So this was a hard piece of work.

What was the greatest moment for you?

Cornelius:

I think the greatest moment was when, after three days of concentrated hacking, we had a first working version of the KDE frontend for OpenSync. This was at meeting at the SUSE offices in Nuernberg and we were able to successfully do a small presentation and demo to a group of interested SUSE people.

Armin:

I don’t remember a distinct “greatest moment”. But what is a really great feeling is to see that a project catches on, that other people get involved, use the code you have written and improve it in ways that you haven’t thought of initially.

Tobias:

Hmm, also hacking on OpenSync/KitcheSync is much fun in general, the greatest moment was when the new KitchenSync frontend synced two directories via OpenSync the first time. But it was also cool when we managed to get the IrMC plugin working again after porting it to OpenSync.

As we now know the worst problem you faced and your greatest moment, the only one missing is: What was your weirdest experience while working on OpenSync?

Cornelius:

Not directly related to OpenSync, but pretty weird was meeting a co-worker at the Amsterdam airport when returning from the last OpenSync meeting. I don’t know how high the chance is to meet somebody you know on a big random airport not related at all to the places where you or the other person live, but it was quite surprising.

Tobias:

Since my favorite language is C++, I was always confused how people can use plain C for such a project, half the time your are busy with writing code for allocating/freeing memory areas. Nevertheless Armin did a great job and he is always a help for solving strange C problems 🙂

Now I’d like to move on to some more specific questions about current and planned abilities of OpenSync. As first, I’ve got a personal one:

I have an old iPod sitting around here. Can I or will I be able to use a program utilizing OpenSync to synchronize my calendars, contacts and music to it?

Cornelius:

I’m not aware of any iPod support for OpenSync up to now, but if it doesn’t exist yet, why not write it? OpenSync makes this easy. This is a chance for everybody with the personal desire to sync one device or another to get involved.

Armin:

I dont think that there is iPod support yet for OpenSync. But it would definitely be possible to use OpenSync for this task. So if someone would like to implement an iPod plugin, I would be glad to help 🙂

Which other devices do you already support?

Cornelius:

At this time, OpenSync supports Palms, SyncML and IrMC capable devices.

Which programs already implement OpenSync and where can we check back to find new additions?

Cornelius:

On the application side there is support for Evolution [GNOME] and Kontact with KitchenSync [KDE] on the frontend side and the backend side and some more. I expect that further applications will adopt OpenSync once the 1.0 version is released.

Armin:

Besides kitchensync there already are a command line tool and a port of the multisync GUI. Aside from the GUIs, I would really like to see OpenSync being used in other applications as well. One possibility for example would to be integrate OpenSync into Evolution to give users the possibility to synchronize their devices directly from this application. News can generally be found on the OpenSync web site www.opensync.org.

It is time to give the developers something to devour, too. I’ll keep this as a short twice-fold technical dive before coming to the takeoff question, even though I’m sure there’s information for a double-volume book on technical subleties.

As first dive: How did you integrate OpenSync in KitchenSync, viewed from the coding side?

Cornelius:

OpenSync provides a C interface. We wrapped this with a small C++ library and put KitchenSync on top. Due to the object oriented nature of the OpenSync interfaces this was quite easy.

Recently I also started to write a D-Bus frontend for OpenSync. This also is a nice way to integrate OpenSync which provides a wide variety of options regarding programming languages and system configurations.

And for the second, deeper dive:

Can you give us a quick outline of those inner workings of OpenSync, from the developers view, which make OpenSync especially viable for application in several different desktop environments?

Cornelius:

That’s really a question for Armin. For those who are interested I would recommend to have a look at the OpenSync website. There is a nice white paper about the internal structure and functionality of OpenSync.

Armin:

OpenSync consists of several parts:

First there is the plugin API which defines what functions a plugin has to implement so that OpenSync can dlopen() it. There are 2 types of plugins:

A sync plugin which can synchronize a certain device or application and which provides functions for the initialization, handling the connection to a device and reading and writing items. Then there is a format plugin which defines a format and how to convert, compare and detect it.

The next part is a set of helper functions which are provided to ease to programming of synchronization plugins. These helper functions include things like handling plugin config files, HashTables which can be used to detect changes in sets of items, functions to detect when a resync of devices is necessary etc.

The syncing logic itself resides in the sync engine, which is a separate part. The sync engine is responsible for deciding when to call the connect function of a plugin, when to read or write from it. The engine also takes care of invoking the format conversion functions so that each plugin gets the items in its required format.

If you want more information and details about the inner workings of OpenSync, you should really visit the opensync.org website or ask its developers.

To add some more spice for those of our readers, whose interest you just managed to spawn (or to skyrocket), please tell us where they can get more information on the OpenSync Framework, how they can best meet and help you and how they can help improving sync-support for KDE by helping OpenSync.

Cornelius:

Again, the OpenSync web site is the right source for information. Regarding the KDE side, the kde-pim@kde.org mailing list is probably the right address. At the moment the most important help would be everything which gets the OpenSync 1.0 release done.

[And even though] I already said it, it can’t be repeated too often: OpenSync will be the one unified syncing solution for the free desktop. Cross-device, cross-platform, cross-desktop.

It’s the first time I feel well when thinking about syncing 😉.

Armin:

Regarding OpenSync, the best places to ask would be the opensync mailing lists at sourceforge or the #opensync irc channel on the freenode.net servers.

There are always a lot of things where we could need a helping hand and where we would be really glad to get some help. So everyone who is interested in OpenSync is welcome to join.

Many thanks for your time!

Cornelius:

Thanks for doing the interview. It’s always fun to talk about OpenSync, because it’s really the right thing.

Armin:

Thank you for taking your time and doing this interview. I really appreciate your help!

Tobias:

Thanks for your work. Publication and marketing is something that is really missing in the open source community. We have nice software but nobody knows 😉

Further Information on OpenSync can be found on the OpenSync Website: www.opensync.org

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This Interview was done by Arne Babenhauserheide in April 2006 via e-mail and KOffice on behalf of himself, the OpenSource Community, SpreadKDE.org and the Dot (dot.kde.org).It was first published on the Dot and is licensed under the cc-attribution-sharealike-license.A pdf-version with pictures can be found at opensync-interview.pdf (OpenDocument version: opensync-interview.odt)

Saturday, May 14, 2005

Myrtle Beach, South Carolina —This weekend is the kick-off for two motorcycle rallies held annually in the U.S. eastern seacoast town of Myrtle Beach. Enthusiasts this year are expected to meet or exceed the 170,000 bikers that arrived last year in droves to the small resort town of 23,000. Festivities span two weeks, and extend again this year into the Memorial Day.

Leading off is the week-long Harley rally, followed by the next week’s BikeFest. In and around town, both day and night are punctured by the sounds of bike engines gunned and revved at stop lights and in parking lots. Groups of cycle riders dominate the streets.

“By Friday night, the front parking lot will be a full line of motorcycles to the corner.” said motel owner Ranjan Patel. The Super 8 motel takes up half a block at its location in the heart of the downtown motel strip. “Both sides [of Ocean Blvd] are nothing but bikes.” Both she and her co-owner husband agree, the influx of bikers dwarf in size the numbers of tourists who visit during regular summer months for ocean-side and family amusement park attractions.

The highly accesorised bikes, decked with chrome and polished to show it, flashed the townscape. Choppers made a showing, but road hogs dominated the ridership, often going twosome. Many rally goers arrived on the scene with SUV’s or big pickup trucks towing cargo trailers loaded with cycles.

Growth in the sheer size of the two rallies led police to make changes in the handling of traffic flow. During BikeFest last year, the mostly black crowd that came in on the heels of the largely white Harley rally the week earlier, were faced with confusion when the two-lane Ocean Blvd was made one-way.

A branch of the NAACP in Conway, the next town over from Myrtle Beach, alleged discrimination by Horry County and Myrtle Beach Police. They claimed authorities and police used an overwhelming and aggressive police presence, combined with a restrictive one-way traffic pattern, to intimidate and discourage the participants in the rally.

An injunction was issued earlier this week by U.S. District Judge Terry Wooten, who ruled that bikers at both rallies be treated the same. Myrtle Beach city lawyers immediately filed an appeal to the ruling at the Fourth U.S. Circuit Court of Appeals, saying “the trial court erroneously determined that the plaintiffs would likely succeed on the merits; that is, that the city of Myrtle Beach intentionally treats Memorial Day weekend tourists differently from others similarly situated because of their race.”

A plan to submit an opposition to the notice has already been announced by Michael Navarre, an attorney for Steptoe & Johnson, who represents the NAACP civil rights group. “We certainly don’t think the judge has ruled erroneously,” Navarre said, according to The Sun News.

Traffic control and safety measures were in full swing Friday morning on US-17. Both directions of the 4-lane divided highway south of Myrtle Beach had traffic cones and parking barriers set up to control traffic. Large flashing road signs on each side of the highway warned cars to use the passing lane. The warning sign flashed a message that the right lane was for motorcycle use only. Police monitored the pull-offs near a Harley dealer’s lot where popular attractions were set-up in the immediate vicinity.

Monday, January 2, 2017

On Friday, Tyrus Wong, a Chinese-US painter who inspired the style of Disney animated film Bambi, died at home of natural causes in Sunland-Tujunga, Los Angeles, according to his daughter Kim Wong.

Born on October 25, 1910 in Guangdong province, China, Tyrus Wong left the country with his father at the age of nine under fake names “Look Tai Yow” and “Look Get”. Wong’s father taught him the art of calligraphy using water instead of ink on newspapers.

Wong used to work as a houseboy after school in Los Angeles earning half a dollar per day. Wong’s principal in junior high school helped arrange a scholarship in Otis Art Institute for his art skills. At Otis, Wong studied Western art and graduated in 1935. In 1934, a landscape of Wong’s appeared in an exhibition organised by the Art Institute of Chicago which also featured a Pablo Picasso etching, “Two Nudes”. For two years, from 1934 to 1936, he worked for the Works Progress Administration to create paintings for public buildings.

In 1938, Wong began work in the Disney animation studio as an in-betweener — creating hundreds of intermediate images for the appearance of motion. Walt Disney noticed his work. Wong’s forest paintings of deer strongly influenced the style of Bambi. Wong worked at Disney for only three years before he was sacked in 1941, following an employee’s strike in which Wong did not participate. Next year, Wong became a Warner Bros. concept artist, drawing storyboards and set designs for live-action films. Films he drew concept art for included The Sands of Iwo Jima, Rebel Without a Cause, and The Wild Bunch. After more than a quarter century at Warner Bros., Wong retired in 1968. Wong gained US citizenship in 1946.

Wong influenced animator Andreas Deja, the creator of Lilo from Lilo & Stitch and Jafar from Aladdin. Wong also worked as a janitor, designed greeting cards, and picked asparagus during the lows in his career.

Wong was named a Disney Legend in 2001. Wong is survived by three daughters and two grandchildren.

Wednesday, October 24, 2007

Scientists say that floating inside Saturn‘s rings are pieces of what they believe to be a “shattered moon,” according to images captured by NASA’s spacecraft Cassini–Huygens.

The scientists from the University of Colorado at Boulder looked at the images which were captured in 2004, and found what they call “moonlets” or large pieces ranging from the size of a stadium to a semi truck, of what they say are the remains of a large moon which was likely destroyed when a comet or asteroid slammed into it.

“This is the first evidence of a moonlet belt in any of Saturn’s rings. We have firmly established these moonlets exist in a relatively narrow region of the “A” ring, and the evidence indicates they are remnants of a larger moon that was shattered by a meteoroid or comet,” said one of the researchers, Miodrag Sremcevic.

The Cassini spacecraft captures eight new propeller-like features within Saturn’s A ring in what may be the propeller “hot zone” of Saturn’s rings. Propeller features form around small moonlets that are not massive enough to clear out ring material, but are still able to pull smaller ring particles into a shape reminiscent of an airplane propeller. Scientists believe that propellers represent moonlet wakes, which are denser than the surrounding ring material and appear bright in the images. The length of the belt in which the moonlets were discovered is almost 2,000 miles long.

Scientists estimate that the size of the moon was relative to the size of Pan, the innermost moon of Saturn. It only measures 20 miles wide at its widest point.