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Hotspot v1.1.0 adds timeline and recording features New release of the GUI for the Linux perf profiler

Close to three months after the initial hotspot release, I’m happy to announce the release of version 1.1.0. Quick recap: Hotspot is a graphical frontend to the Linux perf profiler suite. It allows you to visually analyze perf.data files with the built-in Flame Graph and the Bottom-Up, Top-Down, or Caller-Callee data tables. It is a free open source R&D project by KDAB, you can find the code on GitHub.

Version 1.1.0 adds two important new features to this …

Efficient barcode scanning with QZXing Profiling Qt Zebras Crossing

QZXing is a very useful library: It provides an easy to use Qt integration API around the barcode scanning library ZXing (zebras crossing).

Because it is so easy to setup QZXing in a Qt application, we and most of our customers end up using it when they need to scan images for barcodes. There is, or rather was, a big problem though: When you want to analyze a live camera video stream, e.g. from a phone camera, the latency can …

KDAB and Qt at Embedded World Nuremberg

Embedded World Nuremberg was bigger than ever this year (over 30,000 visitors!), with a large number of exhibitors displaying “Qt friendly” signs in Hall 4, showing how far we’ve come in recent years

This year KDAB exhibited alongside The Qt Company and other Qt partners at one gigantic stand devoted to all things Qt.

Automotive dominated this year, and a big attraction on the Qt booth was the superb RIMAC electric supercar for which KDAB provided a tablet-based digital brochure, …

“Unboxing” the Android Things Developer Preview

Android Things is Google’s answer to creating an environment for IoT devices. Take a slimmed down Android build, add some sensor-specific APIs, and provide it on a number of powerful pre-integrated micro-boards and you have a ready-made platform for building a host of upcoming IoT devices. Android Things can take advantage of many existing Android libraries, toolkits, and APIs, making it easier and quicker for developers to turn ideas into product. What’s not to like?

We decided to test this …

KDAB at Embedded World

Nuremberg, February 23-25

Next week KDAB will be at Embedded World Nuremberg.

Meet us in Hall 4 at Stand 4-610 and see our state-of-the-art demos showing interactive 3D technical visualisation (the Rolls Royce Trent 900 jet engine), revolutionary targeted acoustics (the Holoplot sound system), in-boat User Interface (with QNX), 3D imaging for medical diagnostics and much more. Also, as Qt Premier Partner KDAB will show the awesome Qt3D Technical Visualization – The Dodge SRT Viper

Nine Steps to Vulkan Literacy

No, this isn’t about Star Trek. If you’ve accidentally stumbled onto this blog to learn about the language of Spock’s homeland, try here instead.

Vulkan (spelled with a “k”, not a “c”) is a powerful new 3D graphics API from the Khronos Group, the same consortium that developed its spiritual predecessor, OpenGL, and other related standards. Like OpenGL, Vulkan targets high-performance real-time 3D graphics applications such as games and interactive media, but offers higher performance and lower CPU usage, …

KDAB at EWN

Nuremberg, February 23-25

In February, KDAB will once again be at Embedded World Nuremberg, the embedded event of the year in Europe.

Come and meet us and see our stunning demos in Hall 4 at stand 4-610.

We will have a 3D technical visualisation of a Rolls Royce Trent 900 jet engine, the OPW mPro Industrial Touch UI, new features in our GammaRay Application Inspector & Debugger and much more.

Use our voucher Code A318961 to get your

What is GammaRay? – 3 reasons to start using it today

What is GammaRay? 

For starters, it’s a powerful electromagnetic wave, as well as a way to treat cancer. It’s also an under-appreciated German speed metal band. And it’s what gives Dr. Bruce Banner his big green alter ego. But Qt aficionados will know the GammaRay that we’re talking about is an uber-powerful Qt debugger and introspection tool. If you’re not using it already, read on to find out why it should be part of your go-to toolkit. 

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