Jean-Luc Aufranc (CNXSoft), Author at CNX Software - Embedded Systems News

November 17, 2015November 17, 2015 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

Raspberry Pi’s VideoCore 4 GPU Driver Added to Linux Mainline in Kernel 4.4

While your x86 and AMD64 computer will usually boot with Linux mainline without issues, most ARM boards and device won’t, and many of the ones that do boot only support headless mode, and limited functionalities. The Raspberry Pi had been supporting HDMI output with a simple framebuffer for a while, but a developer working on the Videocore 4 (VC4) GPU found inside Broadcom BCM2835 and BCM2836 processors, has recently submitted a patchset to add VC4 GPU to Linux mainline that should make it to Linux 4.4. The commit message does mention some features are still missing, but it’s a start: This pull request introduces the vc4 driver, for kernel modesetting on the Raspberry Pi (bcm2835/bcm2836 architectures). It currently supports a display plane and cursor on the HDMI output. The driver doesn’t do 3D, power management, or overlay planes yet. Via Golem and Sanders. Jean-Luc Aufranc (CNXSoft)Jean-Luc started CNX Software in […]

November 16, 2015July 19, 2020 by Jean-Luc Aufranc (CNXSoft) - 12 Comments

DRM Info Android App Reports Widevine and Playready DRM Information

I test a fair amount of features in my Android TV boxes review, but I usually don’t test Netflix and other premium online video services since I don’t have any such accounts. These kind of applications appear to be limited by the DRM features enabled in Android. For example, Full HD and 4K video streaming in Netflix requires Google Widevine Level 1, and most devices only come with Level 3 which only supports standard definition, due to cost reasons. So I decided to look whether I could find an app that would list DRM features, and DRM info appears to be it. The app will report both Google Widewine and Microsoft Playready DRM information. The screenshots above show Google Nexus 5 and 6 firmwares include Widevine Security Level 1, but no Microsoft Playready support. So it looks like a neat and easy way to test DRM features of Android device, […]

November 16, 2015December 23, 2016 by Jean-Luc Aufranc (CNXSoft) - No Comments

AndroMeda Box Edge Brillo Starter Board Features Marvell IAP140 Processor, 96Boards Form Factor

Google announced Brillo, a new operating system based on Android and targeting the Internet of things, at the end of October. The company also disclosed that ARM, MIPS and x86 architectures were supported via respectively TechNexion Pico-i.MX6UL system-on-module and PICO-DWARF baseboard, MIPS Creator CI-40 board, and Intel Edison development board. A few days later, Marvell announced Andromeda Box, an IoT platform supporting Brillo and Weave, based on IAP140, a quad-core ARM Cortex A53 application processor for the “Edge” version, and ARMADA 385 dual core Cortex A9 processor for the “Connect” version, but without the full details. AndroidMeda Box Edge is now listed on Solid Run and Arrow websites, where it is sold for $74.99. If the board looks familiar, it’s because it clearly follows 96Boards form factor, but instead of officially being supported by Linaro, it has been designed specifically as a Google’s Brillo development platform with the following specifications: […]

November 16, 2015November 17, 2015 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

Converting H.264 Videos to VP9 In Linux / Ubuntu

1080p videos are all good, but my Internet connection’s upload speed is limited to 512 Kbps, so for example uploading a 20 minutes H.264 video shot at 1080p30 may easily take 10 hours, even after some processing with Handbrake. So this week-end I investigated how I could reduce the upload size, and going with H.265 codec appeared to be a good idea at first. So I tried again H.265 encoding in Handbrake in Ubuntu 14.04, and discovered that adjusting CRF (constant quality factor) to 25 with H.265 was roughly equivalent to 20 with H.264, and both the compression ratio and encoding speed were greatly improved compared to default settings with a minor degradation in quality. If you happen to have a second generation Nvidia Maxwell graphics card you may want to check Nvidia Video Encoding SDK for speedier encoding. All was good until I decided to upload a test video, […]

November 15, 2015November 15, 2015 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Huawei Quick Charging Li-Ion Batteries Promise 10 Times Faster Charge

Watt Lab, part of Huawei’s Central Research Institute, has demonstrated new fast charging batteries for smartphone and tablets at the 56th Battery Symposium in Japan. The lab claims these new batteries can be charged 10 times faster than normal batteries, reaching about 50% capacity in a 5 minutes for a 3,000 mAh battery. Two video demos were uploaded online both using a special charger for the battery only, and compared it to a mobile phone charge with a power adapter. The first demo includes a depleted 600 mAh filled to 68% in just 2 minutes. The second demo is quite similar but with a 3,000 mAh battery (620 Wh/L energy density) charged to 48% in 5 minutes. That means you could get about half day worth of battery with a 5 minute charge. The feat can apparently be achieved by adding “heteroatoms“: According to Huawei, the company bonded heteroatoms to […]

November 14, 2015December 5, 2015 by Jean-Luc Aufranc (CNXSoft) - 31 Comments

TBS5520 Multi-Standard Tuner Box and Linux Drivers

TBS Technologies is a company that specializes in digital TV tuner cards for PC, and recently they’ve also worked on ARM based boards or devices such as the Matrix 2. The company has sent me one of their TBS5520 USB tuner board and box supporting DVB-T2, DVB-S2, DVB-C and ISDB-T for evaluation, as well as some Linux drivers. Today, I’ll provide some specifications, take some pictures, and show how I compiled and installed the drivers in my Ubuntu 14.04 computer. TBS 5520 Tuner Box specifications TBS5520 is a multi-standard USB tuner with the following features: USB – USB 2.0 device port Antenna connectors – 1x LNB IN, 1x RF IN Standards DVB-S2/S Symbol rate: 1~45Msps; FEC DVB-S2: 8PSK: 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10; DVB-S: QPSK: 1/2, 2/3, 3/4, 5/6, 7/8 DVB-T2/T Receiving channel: VHF band, UHF band; Bandwidth: 1.7,5, 6, 7, 8 MHz; FEC: QPSK, 16QAM, 64QAM, 256QAM […]

November 14, 2015 by Jean-Luc Aufranc (CNXSoft) - 9 Comments

$99 pi-topCEED Raspberry Pi 2 Based Desktop Computer Includes a 13.3″ Display (Crowdfunding)

Pi-Top, a laptop kit based on Raspberry Pi 2 board and a 13.3″ display, and which cost about $299.99 with the board, and had a successful crowdfunding campaign despite the price nearly matching equivalent laptops on the market. CEED is now back on Indiegogo with pi-topCEED desktop computer also based on a Raspberry Pi 2 board and a 13.3″ display, but which much more aggressive pricing, as the kit could be yours for $99 with the board, or $70 without, and shipping was included to the few countries I checked out. pi-topCEED Specifications: SoC – Broadcom BCM2836 quad core Cortex A7 processor @ 900MHz with VideoCore IV GPU System Memory – 1GB LPDDR2 Storage – micro SD card slot Display – 13.3″ HD LCD screen screen with eDP 1.2 interface; 1366×768 resolution; 262K colors; 60Hz refresh rate; 3W power consumption. Video & Audio Output – HDMI (connected to display board […]

November 13, 2015November 13, 2015 by Jean-Luc Aufranc (CNXSoft) - 101 Comments

List of Amlogic S905 TV Boxes and Sticks

Rockchip RK3368 TV boxes looked promising at the end of the summer, but ended up being disappointing, not because of their expected lower performance compared to RK3288, but simply because they could not deliver on their main selling point: 4K H.265 / H.264 video playback, and the sheer number of issues with the first devices selling for nearly the same price as equivalent Rockchip RK3288 devices. Rockchip RK3368 will soon have a worthy competitor with Amlogic S905, which won’t deliver amazing benchmark scores, but looks promising for its 4K 10-bit HEVC video playback, HDMI 2.0 and HDCP 2.2, and historically Amlogic delivers better video playback than Rockchip. The first Amlogic S905 TV boxes should start shipping by the end of the month, and prices are starting very low, just over $40, thanks to competition between the many manufacturers launching devices based on the new Amlogic SoC. That’s why I’ve decided […]