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Domain: berlios.de
Stories and comments across the archive that link to berlios.de.
Stories · 13
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Software To Flatten a Photographed Book?
davidy writes "I have photographed some pages of a book for reading on my PDA. This is much faster than scanning and I don't have to carry the heavy books. However, the photographed books are not as nice: curved, skewed, and shadowed, as opposed to the much flatter, cleaner scanned books. I have searched for software that can flatten the pages for better reading on the PDA. So far I have come across Unpaper and Scan Tailor. Unpaper doesn't seem to have a windows GUI, and Scan Tailor doesn't unskew well. I remember reading about Google's technique of converting books to e-books with a camera and a laser overlay. Is there any home user software that can do a similar job without the need for a laser overlay or other sophisticated (and patented) technology?" -
Open Firmware Released For Broadcom Wireless
mcgrof writes "Linux developers have announced the release of a reverse-engineered open source firmware for Broadcom 4306 and 4318 wireless hardware, licensed under the GPLv2. 'Although the base firmware is not fully 802.11 compliant, e.g., it does not support RTS/CTS procedure or QoS, we believe that someone could be interested in testing it. The firmware does not require the kernel to be modified and it uses the same shared memory layout and global registers usage of the original stuff from broadcom to ease loading by the b43 driver.' You can go check out and download the firmware at the Italian Universita' Degli Studi Di Brescia Open FirmWare for WiFi networks project page. This is a good example of clean room reverse engineering design where one group worked on specifications while another worked on the the driver and the firmware. Kudos to the specification writers and bcm43xx development team for their hard work." -
Dumping Aqua On Mac OS X For X11?
Sagefire asks: "Aqua is a beautiful interface but it can be incredibly resource intensive (especially for older/low-end machines). And, though the open source community has made great strides in reverse engineering proprietary drivers from Mac OS X, I would love to be able to simply keep using the drivers that came with it, for now. Since there is a fully functional BSD variant under the hood, is it possible (using X11.app, darwinports, and/or Fink) to boot to a command line and simply startx? Would it use less RAM to bypass Aqua?" -
FreeNX Terminal Server Setup on SUSE 10
TRussell writes to tell us that Mad Penguin recently had the opportunity to review SUSE 10 and found that they had included the latest version of FreeNX on their installation media. FreeNX is a relatively new technology for remote display providing "near local speed application responsiveness over high latency, low bandwidth links." The article provides a nice guide on how to get it set up for several different operating systems. -
Pros and Cons of Garbage Collection?
ers asks: "Most new programming languages are using garbage collection, rather than programmer-controlled memory management. The advantages are obvious: programmers no longer have to worry about forgetting to delete allocated memory, leading to far fewer memory leaks. The disadvantages are often glossed over by programming language designers - aside from the performance issues, predictable memory management can be used for controlling access to files and similar resources, creating safer thread locking code and even providing better error messages. Some programming languages, which usually predictable memory management, can also be made to behave like they are garbage collected - for example, Boost provides various C++ smart pointer classes. So, given the choice between garbage collection or manual memory management, which would you choose and why? When using a manual memory management language, when do you consider the performance and syntactic overhead of faked garbage collection to be worthwhile?" -
OpenSolaris-based OSes a Threat to Linux?
sunBoy asks: "A number of OpenSolaris-based Operating Systems are popping up on the map. BeleniX (screenshots), SchilliX and Nexenta (screenshots) are a few OSes which have hit the headlines in the past couple of weeks. Some say OpenSolaris has a leg up on Linux - 'For Linux, we're trying to push many distributions through to compress them into a standard. With OpenSolaris, we are already at the small end of standardization. What will follow is more OpenSolaris distributions spreading out from that core.' Is OpenSolaris really a threat to Linux?" Less of a threat and more of an alternative. Would more Unix-based alternatives on the market really be a bad thing? -
Windows Vista May Degrade OpenGL
srw writes "OpenGL is the industry choice for cross platform, hardware accelerated 3D graphics, and it is also the only way you can get fast 3D graphics on your Linux desktop. It now seems Windows Vista implements OpenGL via Direct3D, seriously degrading its performance and attractiveness to developers." From the article: "In practice this means for OpenGL under Aeroglass: OpenGL performance will be significantly reduced - perhaps as much as 50%, OpenGL on Windows will be fixed at a vanilla version of OpenGL 1.4, No extensions will be possible to expose future hardware innovations. It would be technically straightforward to provide an OpenGL ICD within the full Aeroglass experience without compromising the stability or the security of the operating system. Layering OpenGL over Direct3D is a policy more than a technical decision." -
Brief Tutorial on Reverse Engineering Mac OS X
rjw57 writes "There is an article on OSNews I wrote about how the guy behind Desktop Manager goes about reverse engineering APIs from Mac OS X with a brand new example not revealed anywhere else. From the article: 'I am often asked in email how I uncovered the API calls I use in Desktop Manager which are, unfortunately, undocumented. This article aims to give a little insight into the techniques I use to reverse engineer Mac OS X in order to provide extra functionality to users and extra information to third-party developers. In this article all the utilities I use are a standard part of Mac OS X's developer tools which are freely available.'" -
Point-and-klik Linux Software Installation?
bfree writes "While you may have come across klik before, you might not be aware of some of the major changes which have been taking place over the last few months. If you visit the old klik site you will see a link to the Next Generation klik, which aims to provide a web interface to install the entire collection of Debian packages, letting you grab any package from sid (and its dependencies) and 'install' it into its own location, similar to the system outlined in this recent slashdot story." See below for more on klik.bfree continues: This is not the only change in klik recently however, now applications are built into compressed image (cmg) files rather then stored as application directories. This means that you can store the application on any filesystem and move it around at will. Klik no longer totally depends on kde. Where previously klik could only be used with konqueror, now you can also use firefox and elinks, and where previously kdialog was required, now any of dialog|Xdialog|kdialog should work.
Klik now also supports more distributions fully. The officially supported list of distributions is now Knoppix (3.7), Kanotix (BHX), Linspire 5.0 and Simply Mepis (2004.04). Klik assumes that you will have installed at least the lowest version of any package which is present in all supported distributions and build the applications as such. If a package you want klik to install depends on a package in this base system it will not be included in the cmg so you must have it installed or add it to the cmg by hand afterwards. If you want to try using klik on another distribution, your results will primarily depend on whether or not your distribution has the packages the cmg depends on and assumes are present. So you will certainly fail to install kde applications on a distribution with no kde (as all the supported distributions have kde), but programs with simpler, or less common and therefore missing from some supported distributions, dependencies can work just fine.
One of the best ways to demonstrate the power of klik's techiniques is with the Christmas present from probono, an OpenOffice.org cmg for version 1.9.65. With this cmg (which runs on far more distributions then klik's supported list, especially as it uses Linux transparent iso compression rather then cramfs) you can download one 100M file to try out the preview release of Ooo, no need to upgrade any parts of your system and if the system has been setup by root to use cmg files there is also no need to even be root. I think this demonstrates the very best feature of bundled applications, you can try a potentially reckless preview release of software without having to upgrade your system.
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Quick Development WIth KDE's KParts
Philippe Fremy writes: "I have written a small article to demonstrate how much KPart, the KDE component technology, is easy to use." Interesting to note how few lines of code certain things take -- just 600 lines for the koshell? Wow. -
Who Are OpenSource developers?
aCC writes "Read on Heise (german) about an online questionary (english) that is being done by a group of the Technical University of Berlin to find out more about the nature of OpenSource developers. Quite interesting (it has realtime stats). It needs some more international entries though... so, go slashdotters go!" -
Who Are OpenSource developers?
aCC writes "Read on Heise (german) about an online questionary (english) that is being done by a group of the Technical University of Berlin to find out more about the nature of OpenSource developers. Quite interesting (it has realtime stats). It needs some more international entries though... so, go slashdotters go!" -
Who Are OpenSource developers?
aCC writes "Read on Heise (german) about an online questionary (english) that is being done by a group of the Technical University of Berlin to find out more about the nature of OpenSource developers. Quite interesting (it has realtime stats). It needs some more international entries though... so, go slashdotters go!"