Category: Testing

QA & Testing procedure, software and more.

Posted on by Jean-Luc Aufranc (CNXSoft) - No Comments on PVRMonitor Displays real-time CPU and GPU performance for PowerVR enabled Android Devices

PVRMonitor Displays real-time CPU and GPU performance for PowerVR enabled Android Devices

Imagination Technologies has some advanced tools such as PowerVRTune in their Powervr Graphics SDK, but they’ve now released a simple tool called PVRMonitor to display real-time CPU and GPU usage for Android devices featuring PowerVR GPUs. In some firmware, Android’s Developer Settings have options to enable CPU and GPU usage, but in my phone for example, this is not available, so this app may be handy to check whether your system or app is taking too many resources. Inside the application, you can select the overlay position, whether to show all CPU cores with CPU load averaged over 200ms, or over one second. You can select five hardware blocks to display: CPU Total Pixel – Load in percent of the pixel processing hardware including texturing, raster operation and  fragment shader processing. If nothing is modified on the screen it should be zero, and if it is too high during games […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 12 Comments on Geniatech Releases XBMC Linux Image for AML8726-MX based Media Players

Geniatech Releases XBMC Linux Image for AML8726-MX based Media Players

A couple of week ago Geniatech released the source for XBMC for Android, and today I’ve been informed they’ve released an XBMC Linux image for their media players based on AMLogic AML8726-MX dual core Cortex A9 SoC, just a few days after the release of MX Linux v1.00 RC1 working for MX2REF, G18REF and g02refDongle (These are not product names, but board codes that can also be found in ro.product.device or ro.product.board in build.prop of Android firmware). You can download MX_BOX-Linux_XBMC20131205.zip which is said to contain the XBMC Linux image for ATV1200, ATV520, ATV400, ATV360, etc… However, it’s said not to work for HDMI dongles such as ATV120, contrary to MX Linux. I haven’t been able to download the file within a reasonable amount of time, so I haven’t been able to check the content, and installation instructions. An anonymous source told me it was likely Geniatech just took the community […]

Posted on by Jean-Luc Aufranc (CNXSoft) - No Comments on Opus Open Source and License-free Audio Codec Decreases Latency over VoIP Codecs, (Slightly) Betters MP3 and AAC Quality

Opus Open Source and License-free Audio Codec Decreases Latency over VoIP Codecs, (Slightly) Betters MP3 and AAC Quality

I’ve just stumbled upon Opus, a relatively new audio codec, with the release of version 1.1 implementation which  improves encoding quality for VBR audio, automatically detect audio or speech to select the best encoding mode, and improved 5.1 surround quality/compression ratio. The new release also bring speed improvements for all architectures, and specifically for ARM, where decoding uses around 40% less CPU and encoding uses around 30% less CPU thanks to the use of NEON compared to an earlier version. You can go to the online demo page to find more about the latest released, and try some of the latest improvements. This all looks fun, but I wanted to know more about Opus, and especially how it compares against MP3 or AAC. It turns out Opus was not originally designed to compete against MP3/AAC which are used to store audio, but instead it was meant to be used for […]

Posted on by Jean-Luc Aufranc (CNXSoft) - No Comments on Practical Applications and Benchmarks of GPU Computing via RenderScript and OpenCL with ARM Mali-T6XX GPU

Practical Applications and Benchmarks of GPU Computing via RenderScript and OpenCL with ARM Mali-T6XX GPU

Since the announcement of ARM Mali-T604 in 2010, ARM has explained that GPGPU (General Purpose computing on GPU), aka GPU Compute, would be one of the key features of their new Mali graphics processor, and the company now expects GPGPU to become mainstream in embedded and mobile devices in 2014 and beyond. I’ve just come across a presentation by Roberto Mijat, technical marketing manager at ARM, entitled “Unleashing the benefits of GPU Computing with ARM Mali” which shows practical applications and use cases where the use of RenderScript, or OpenCL can make massive performance improvements, at much lower power consumption, over the same parallel tasks processed by the CPU only. Let’s have a look at some of the most interesting slides. GPU compute can be used for multiple applications in mobile, multimedia, and automotive sectors. GPU Compute for H.265 / HEVC HEVC aka H.265 is the next generation codec providing […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 24 Comments on How-to Install and “Hack” Linux on T428 or MK802 IV mini PCs

How-to Install and “Hack” Linux on T428 or MK802 IV mini PCs

PicUntu 4.5 installer is probably the easiest method to install Ubuntu on a Rockchip RK3188 based mini PC, but if you want a little more flexibility I’ll provide another method to install Linux on T428, MK802 IV or compatible devices, as well as links to go further: dual boot Android / Linux, create your own official distro, status of Mali-400 GPU support in RK3188… The method below is not new, as it was posted by Linuxium (Ian Morrison) in Freaktab in September, but this is the first time I’ve taken the time and managed to run Linux on Rockchip RK3188, and I’ll provide some more detailed steps. Prerequisites Even though in some cases it’s possible to install Rockchip firmware from Linux, AFAIK the tools available in Linux lack supports for the parameter and loader files, so ironically, you’ll need a Windows XP/7/8 machine to install Linux in your mini PC. […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 24 Comments on XBMC MX Linux v1.00 RC1 for AMLogic AML8726-MX Devices

XBMC MX Linux v1.00 RC1 for AMLogic AML8726-MX Devices

Developer “croniccorey” has recently announced the release of MX Linux v1.00 RC1, an XBMC Linux image for media players based on AMLogic AML8726-MX, on XDA Developers’ Forums. This release supports G18REF and MX2REF devices (See build.prop in Android) such as Matricom G-Box Midnight MX2, and a test image has also been released for g02refDongle devices such as Droid Stick A2. Checking the MTD layout Before starting the installation, you may want to check your flash partitions in order to avoid bricking your device: Install and run Terminal Emulator Run the command below to make sure your partition table is compatible with the image:

If your partition table is different, do not install the default image for MX2REF / G18REF. However, If you’ve got Matricom Android firmware version 1.1.6 or greater or WJB’s Linux builds from November 21 2013 onwards, the MTD layout will be different, and you’ll need to […]

Posted on by Jean-Luc Aufranc (CNXSoft) - No Comments on Linaro 13.11 Release with Linux Kernel 3.12 and Android 4.4

Linaro 13.11 Release with Linux Kernel 3.12 and Android 4.4

This release includes Linux Kernel 3.12 (baseline), Linux Kernel 3.10.20 (LSK), Android 4.4 for the first time, and Ubuntu Linaro 13.11 (still based on Raring). Beside Android Kit Kat support, other noticeable updates include initial documentation for LAVA, and further work on ARMv8 support. Here are the highlights of this release: Android Engineering Android 64-/32-bit updated to 4.4 KitKat Fastboot/UEFI – Created Fastboot app design Builds and Baselines Linaro Stable Kernel 3.10.20-2013.11 released – Includes an updated big.LITTLE MP patchset Linux Linaro 3.12-2013.11 released: gator version 5.16 (same version as in 13.10 release) updated big-LITTLE-pmu, iks, iks-cpufreq, and interactive-gov-updates topics from ARM LT updated basic Capri board support from Broadcom LT (generic phy support for USB, watchdog, updated bcm_defconfig) updated big endian topic updated topic to support K3V2 board from Hisilicon LT updated Versatile Express patches from ARM LT vexpress64 support (updated FVP Base model files, added support for FVP […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 3 Comments on Binwalk Utility Helps You Analyze and Reverse-Engineer Firmware Files

Binwalk Utility Helps You Analyze and Reverse-Engineer Firmware Files

Binwalk is a “firmware analysis tool designed for analyzing, reverse engineering and extracting data contained in firmware images”.  This tool written in python supports Linux, and somewhat Mac OS X, can scan firmware files for files signature, and can be useful for hacking firmware files, and finding hidden information. Let’s install binwalk first. It’s very easy in a Debian or Ubuntu machine, as you just have to download the package, and run a script for installation:

If you have another Linux ditributions, it’s just a little more complicated. You still need to download and extract the release package as above, but you’ll have to install the following package depending on the features your need: Minimal installation – python 2.6 or greater, and  python-magic To generate entropy plot graphs – python-matplotlib For automated extraction: Packages – mtd-utils zlib1g-dev liblzma-dev gzip bzip2 tar unrar arj p7zip p7zip-full openjdk-6-jdk Build and install […]

UP 7000 x86 SBC