Aleksandr Trufanov's Forum Nokia Blog

Aleksandr Trufanov's Forum Nokia Blog http://blogs.forum.nokia.com/blog/aleksandr-trufanovs-forum-nokia-blog A Forum Nokia Blog truf 2009-11-23T20:04:01Z Reading DjVu docs on Symbian 9.x http://blogs.forum.nokia.com/blog/aleksandr-trufanovs-forum-nokia-blog/2009/04/10/djvu-reader Greetings, I want to introduce a new project, published on DevMobile, russian mobile developers community. We all well know the <a href="http://en.wikipedia.org/wiki/DjVu">djvu</a> file format. Its often used for ebook distribution, especially scanned non-OCR'ed pages (so djvu files is relative big). Its not so common as pdf, and user faced with djvu often stuck and can't view it even on PC. Thats why i was so surprised when i get alpha version of DjVu Reader for Symbian 9.x in my hands. Its based OpenC port of <a href="http://djvu.sourceforge.net/">DjVuLibre</a> lib, and i'm very impressed how fast it render 3-5Mb documents.   Only PIPS and self-signed cert required for it's work. Screenshots:   <table align="center" border="0" cellpadding="4"> <tbody> <tr> <td><img src="http://devmobile.ru/images/stories/djvu_reader/djvu_screenshot0020.jpg" alt="DjVu Reader для Symbian 9.x" width="240" height="320" />  </td> <td align="center"> <img src="http://devmobile.ru/images/stories/djvu_reader/djvu_screenshot0021.jpg" alt="DjVu Reader для Symbian 9.x" /></td> </tr> <tr> <td> <img src="http://devmobile.ru/images/stories/djvu_reader/djvu_screenshot0023.jpg" alt="DjVu Reader для Symbian 9.x" /></td> <td> <img src="http://devmobile.ru/images/stories/djvu_reader/djvu_screenshot0022.jpg" alt="DjVu Reader для Symbian 9.x" /></td> </tr> </tbody> </table>   You can <a href="http://devmobile.ru/project/djvu/673-djvureader-eng">download alpha version of DjVu Reader</a> from it's page on DevMobile. Current time, project is not finished. Viewer does't support color documents, touchscreen and have only several extra features (go to page, zoom in\out). Project intended to become opensource when author will be able to make stable fully functional version. For now it's donationware. If you like such kind of staff, you can support author by paypal donation via <a href="http://devmobile.ru/project/djvu/673-djvureader-eng">project page</a>.               Open C S60 Symbian C++ General DjVu 2009-04-10T14:30:07Z truf Bridge between C/C++ and ActionScript 3.0 http://blogs.forum.nokia.com/blog/aleksandr-trufanovs-forum-nokia-blog/2008/11/23/alchemy Today I find out very interesting project: Adobe Alchemy - "A research project that allows users to compile C and C++ code into ActionScript libraries (AVM2).". It's in a preview state. Published on 17 Nov. There are some quotes from Adobe webpage: "With Alchemy, Web application developers can now reuse hundreds of millions of lines of existing open source C and C++ client or server-side code on the Flash Platform.  Alchemy brings the power of high performance C and C++ libraries to Web applications with minimal degradation on AVM2.  The C/C++ code is compiled to ActionScript 3.0 as a SWF or SWC that runs on Adobe Flash Player 10 or Adobe AIR 1.5. <div class="columns-2-Abb-A"> Alchemy is primarily intended to be used with C/C++ libraries that have few operating system dependencies. Ideally suited for computation-intensive use cases, such as audio/video transcoding, data manipulation, XML parsing, cryptographic functions or physics simulation, performance can be considerably faster than ActionScript 3.0 and anywhere from 2-10x slower than native C/C++ code. Alchemy is not intended for general development of SWF applications using C/C++. </div> With Alchemy, it is easy bridge between C/C++ and ActionScript 3.0 to expand the capabilities of applications on the Flash Platform, while ensuring that the generated SWCs and SWFs cannot bypass existing Flash Player security protections." You can find out more <a href="http://labs.adobe.com/technologies/alchemy/">here</a>. There are video: "Branden Hall, CTO of Automata Studios, discuss his experience working on the Ogg Vorbis porting project using Alchemy", <a class="link-more" href="http://labs.adobe.com/downloads/alchemy.html">Alchemy toolkit preview</a>, <a href="http://labs.adobe.com/wiki/index.php/Alchemy:Documentation:Getting_Started">Getting Started instructions</a> and <a href="http://labs.adobe.com/wiki/index.php/Alchemy:Libraries">sample libraries</a>. Adobe looking for feedback. Flash Open C Symbian C++ General 2008-11-23T19:47:03Z truf Virtual GPS from Skyhook Wireless http://blogs.forum.nokia.com/blog/aleksandr-trufanovs-forum-nokia-blog/2008/05/07/virtual-gps-from-skyhook-wireless I just check updated Skyhook SDK and find very nice tool: "Virtual GPS - Developers of GPS-enabled applications can now simply plug into the WPS engine using the NMEA standard interface with no additional code changes"  Thats just great news. Frankly, using OpenC based Skyhook API in pure Symbian C++ application is a bit ugly for me. Thats great what now user can just install Virtual GPS service on the phone, and any application can get Location from it without any changes in its code! One problem: i wonder how it can work on device, which already have GPS onboard. Becouse some applications can use both GPS and WPS in one time... or switching then GPS not aviable (perhaps user drive into tunnel). I cant check Virtual GPS for s60 yet - its still unaviable, bcs it under Symbian Signed process.. Other features of updated Skyhook SDK can be found <a href="http://www.skyhookwireless.com/developers/blog/2008/05/06/upgraded-skyhook-sdk-with-location-targeted-ads-available-today/">there</a>.  Location Based Services Open C S60 Symbian C++ General 2008-05-07T21:16:23Z truf