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March 17, 2012March 17, 2012 by Jean-Luc Aufranc (CNXSoft) - No Comments

98 Raspberry Pi Boards Left for Qt Developers

In November 2011, the Raspberry Pi foundation announced that Nokia purchased codes for 400 boards from the 1st 10,000 batch, in order to give them away to selected developers that are interested in helping develop and test Qt 5 on the Raspberry Pi. This developer program is called QtonPi. The surprising part if that they struggle to distribute all those boards. Although to date 425 people have been selected, only 302 are currently eligible to receive a board because over 100 developers did not provide their details to receive the free Raspberry Pi board namely: Their full name The link to their wiki user profile. The area of the “QtonPi Accepted Page” where they are listed. The country where the board will be shipped If by chance, you are reading this blog, have been selected but you can’t see “OK” or “CODE SENT” next to your user ID, you should […]

January 16, 2012 by Jean-Luc Aufranc (CNXSoft) - No Comments

Ubuntu TV Works on OMAP4 Pandaboard

Ricardo Salveti, Software Engineer at Canonical, has written a blog post saying that Ubuntu TV now support full video hardware acceleration on the Pandaboard, TI OMAP 4 low cost development board. A demo of Ubuntu TV on the ARM platform with Ubuntu TV UI and 720p/1080p video playback can be seen in the video below. Pandaboard is the first ARM platform that can fully run Ubuntu TV. If you have a Pandaboard, you can try it out by installing the packages available at Linaro’s Overlay PPA. Qt and Qtmobility are not there yet (Patches are available at https://github.com/robclark/qtmobility-1.1.0), but he said they would be soon. The source code for Ubuntu TV is available at https://code.launchpad.net/~s-team/ubuntutv/trunk Jean-Luc Aufranc (CNXSoft)Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011. […]

January 9, 2012July 17, 2012 by Jean-Luc Aufranc (CNXSoft) - No Comments

Color Converter for Nokia Symbian Anna / Belle

I’ve developed a small Qt Quick application called ColorConv that can convert RGB color to HEX color used in HTML pages (e.g. 255,255,255 -> #FFFFFF) and vice versa mainly to play with Qt Creator QML and test Nokia Ovi Store application submission process. You can enter the Red, Green, Blue values manually by typing with the default numerical keypad in Symbian or use the slider to select the value. Alternatively you can enter the hexadecimal code to get the RGB value. If you are interested, you can download it in Ovi Store and in case you have some requests please comment on the support page. Nokia Ovi Store Submission Process Nokia submission process is almost free (1 Euro) and it took about 2 weeks to get my application published. I basically followed the instructions given on submit Qt applications to the Ovi Store PDF. The first thing you have to […]

December 15, 2011December 15, 2011 by Jean-Luc Aufranc (CNXSoft) - No Comments

Qt Labs Releases Qt 4.8.0

Qt Labs has just announced the release of Qt 4.8.0 featuring Qt Platform Abstraction, threaded OpenGL support, multithreaded HTTP and optimized file system access. Here are some of the new key features in Qt 4.8.0: Qt Platform Abstraction (QPA) QPA restructures the GUI stack to enable easier porting of Qt to different windowing systems and devices. Previously called Lighthouse. Threaded OpenGL supportEnables developers to render OpenGL from more than one thread concurrently. See Threaded OpenGL in 4.8 for more details. Multithreaded HTTP HTTP requests are now handled in a separate thread by default. This should make application guis smoother, as networking will no longer use the main event loop. Optimized file system access The file system stack received some heavy lifting under the hood. The result is better I/O performance, achieved by reducing the number of system calls performed for I/O and by better use of cached data, when available. […]

December 12, 2011December 13, 2011 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

Qt Quick QML Digital Signage Demo Part 2

Following up on Qt Quick QML Digital Signage Demo Part 1, I’ve updated the digital signage demo to support the following: Play 5 videos in a loop Display 5 pictures in a loop where the picture is changed every 5 seconds Use a (twitter) RSS feed for the scrolling text I initially planned to use QML to list the media files, but it is apparently not possible without using C/C++ and I may do it later on. So instead, I hard-coded the video and picture playlists in the QML files with the ListModel element. Videos are located in the video directory and pictures in the pic folder. An index is needed to scroll thru the playlist, but QML does not support global variables, so I created a JavaScript file (globals.js) to store the video and picture index: // Global variables in JavaScript file var iVideoIndex = 0 var iPicIndex = […]

December 10, 2011December 12, 2011 by Jean-Luc Aufranc (CNXSoft) - No Comments

Qt Quick QML Digital Signage Demo Part 1

I’ve recently started to play around with Qt and since I’d like to do a digital signage player running on Raspberry Pi, I’ve decided to try to make a simple digital signage demo application to evaluate the development platform. In Part 1, my goal was to make a 3 zones layout with a video zone, a picture zone and a scrolling text zone. I would just play one hard-coded media in each zone and the video and scrolling text would have to continuously loop. I used Qt Creator to create a “Pigital Signage” application (or should it be Πgital Signage ?). To create the 3 zones I used the Gridview Element with 3 rectangles: Video zone: 600×432 Picture zone: 200×432 Text zone: 800×48 Displaying the image is very easy with the Image Element:

Image {
    source: "pic/phone.jpg"
}

Image {

source: "pic/phone.jpg"

}

The video playback was also supposed to be easy with the Video Element but it can […]

December 8, 2011December 31, 2011 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Nokia Developer Day 2: Qt QML Workshop – Chiang Mai

I’ve just attended Nokia Developer Day on 6-7 December 2011 in Chiang Mai. I’ve already written a summary about the first day dealing with Series 40 Java and Web Apps Workshop. The second day was focused on Qt/QML (Qt Meta-Language) software development for Nokia’s Symbian phones. Nokia will phase out Symbian operating system in 2016, but they’ll still support it until that time. Nokia will also port Qt to lower end phones (e.g. Series 40) on a new operating system based on Linux called Meltemi. Overall Business Direction & Strategy The first 45-minutes for was presentation given by Grant Aaron McBeath, Managing Director, Nokia Thailand and Emerging Asia, about Nokia business direction: focus on Windows Phone for smartphones, Java/Web Apps for feature phones and future disruption. He also showed the progress of Nokia Ovi Store with 10 million downloads a day and 177 publishers with more than 1 million downloads. […]

November 29, 2011November 29, 2011 by Jean-Luc Aufranc (CNXSoft) - No Comments

Nokia Developer Day in Chiang Mai – 6-7 December 2011

Nokia Developer Day will take place at Kantary Hills in Chiang Mai, Thailand on the 6 & 7 December 2011. A Separate event will also take place in Khonkaen on the 8 & 9 December 2011. Here’s the agenda for the 2 days event in Chiang Mai: Day 1 – 6th of December: 08:45 – 09:15 – Registration 09:15 – 09:30 – Introduction to Ecosystem Business Updates 09:30 – 09:50 – Development possibilities on Nokia Platforms 09:50 – 12:30 – Introduction of Series 40 Java – Touch & Type with hands-on exercises. 12:30 – 13:30 – Lunch 13:30 – 16:00 – Series 40 Web Apps for the next billion with hands-on exercises. 16:00 – 17:00 – Social Media Marketing Training 17:00 – Q&A Day 2 : 7th of December 08:45 – 09:15 – Registration 09:15 – 10:00 – Overall business direction 10:00 – 12:00 – Introduction to Qt Quick (QML) […]