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Qt Experiences on NXP's Connetcted TV Platforms
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Qt Experiences on NXP's Connetcted TV Platforms


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Presentation by Ben Pronk held during Qt Developer Days 2009. …

Presentation by Ben Pronk held during Qt Developer Days 2009.

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  • 1. Qt experiences on NXP's connected TV‐platform Ben Pronk, NXP semiconductors
  • 2. Agenda • Who are we, introducing NXP • Digital television products, general overview • Major market trends, the connectivity challenge • The TV550, a digital television SOC • Digital television widget implementation • A first implementation without Qt • Qt, deployment experiences 1
  • 3. Introducing NXP Semiconductors • Headquarters: Eindhoven, The Netherlands • Net sales: $5.4 billion in 2008 • Established in 2006 (formerly a division of Philips) • Businesses: – Automotive – Home – Identification – Multimarket Semiconductors
  • 4. Introducing NXP Semiconductors Leading in picture quality developments for TV, Set-Top Box (STB) and PC TV, with: Motion Accurate Picture Processing: first to remove all artifacts from HDTV motion pictures Best digital natural motion Integrate MPEG4 decoding in TV IC Introduced the industry's first digital TV processor manufactured in 45nm technology 1 out of 2 TVs worldwide contains NXP chip 3
  • 5. Digital Television Products • An integrated digital television for 2010 is a complex product: – Analogue TV reception and connectivity like Scart – Digital TV reception and connectivity like HDMI – Ever growing audio and video processing capabilities – Advanced graphical user interfaces: 2D and 3D graphics capabilities – TV-applications: Teletext, Electronic Program Guide, MHP, MHEG – PC-monitor functionality: VGA, DVI, Display port – PC-conectivity: Ethernet, Wifi, USB, PCI-e, – In home networking: DLNA, uPnP – Internet connectivity: YouTube, Catch-up Tv, Portals, VOD, Skype – USB media devices: Flash devices, Camera’s, Camcorders – Connectivity to portable media devices: Ipod, mobile phones – Recording applications, PVR, Blue-Ray, transcoding – Content protection and Digital Rights Management
  • 6. Digital Television Products KID’S MASTER BEDROOM BEDROOM camera Internet radio broadband TV-to-TV link INTERNET wireless LAN home theater audio portable display Media Server RF remote control (DVD+RW/HDD STUDY KITCHEN LIVING ROOM
  • 7. The TV550, a Digital television SOC Analogue Picture Broadcast processing Digital Sound Broadcast processing Analogue digital I/O Application CPU, Graphics generation Connectivity
  • 8. The TV550, a Digital television SOC • Global single-chip LCD TV platform – Support for full HD 120Hz panels and picture processing – Conditional access and DRM support MPEG4/H.264 decode – Manufactured in leading edge 45nm process – MIPS24kf CPU@550MHz
  • 9. Major Market Trends • Proliferating diversity and change – Increasing amount of interconnects on a television – With various protocols – Exploding amount of potentially connected devices and compatibility – Exploding variety in to be supported media formats – New formats and devices appearing every day • Yet the basic TV quality of services needs to be maintained – Consumer products have a higher expected QOS than for a PC – In a very competitive and price oriented market
  • 10. Major Market Trends • Shortened life cycle – Consumer product release 6 months after engineering samples • Exponentially growing software content – High diversity of interconnects, protocols and standards – Major convergence of “PC” type of functionality – Software content in a television grows factor 2 every 1.5 year – Modern televisions have already over 512 MByte of memory
  • 11. Major Market Trends • Extensive use of 3d party software, COTS and open source – No silicon vendor can provide the requested functionality “on its own” – Economy reality and TTM forces the use of COTS – Historically completely stable (over time) and closed television applications are opened up. – A television becomes more and more a small PC that also has some basic TV capabilities
  • 12. Digital television widget implementation • In the television small useful applications on top of the standard TV. • Examples: Stock market, weather, latest news
  • 13. Digital television widget implementation • :Offers a “closed” widgets service for TV and STB manufactures consisting of selected widgets only • :Offers a “open” widgets standard including tooling. The widgets are mainly developed by “The community”.
  • 14. Digital television widget implementation THE Internet Widget interpreter Widget interpreter Graphics, Video, Audio Window manager Linux services Graphics rendering system Control IR Remote, Keyboard, mouse TV5xx Hardware / SW platform
  • 15. Digital television widget implementation • The main challenges: – Selecting a “bundle” of OPEN SOURCE SW modules working well together OUT OF THE BOX – Selecting a user friendly build environment – Execution speed , television CPU’s are MIPS’s running at 500MHz. – Memory footprint (currently +/- 80 MB on libraries + extra data cache) memory – User interface, a television does not have a keyboard – Integration with our TV platform software
  • 16. Digital television widget implementation Components for Webkit/Google-gadgets based on GTK Google gadgets Web browser (For now Gtk‐launcher  test application) Webkit sqlite libxslt libxml2 curl libgtk2 GTK+ T1 glib libgif pixman cairo fontconfig atk libpng Jpg-6b tiff freetype pango libxml NXP DirectFb DirectFb 1.3 Drivers TV5xx hardware: Frame buffer Gfx Unit
  • 17. Slide 16 T1 Add additional packages for GTK+ Home; 02.04.2009
  • 18. Digital television widget implementation • Experiences – Configuration nightmare, just getting a complete build with compatible libraries takes significant time. – Problems are difficult to analyze, through the many layers of software – Execution speed is a major problem as many of the modules are build with a PC in mind
  • 19. Qt deployment experiences • Selected Qt for a second implementation – Making use of the Nokia open Source license • Open Source yet: – Complete and consistent package – Building out of the box – Easy configuration and integration
  • 20. Qt deployment experiences Software modules without Qt Google gadgets Web browser (For now Gtk‐launcher  test application) Webkit sqlite libxslt libxml2 curl libgtk2 GTK+ T3 glib libgif pixman cairo fontconfig atk libpng Jpg-6b tiff freetype pango libxml NXP DirectFb DirectFb 1.3 Drivers TV5xx hardware: Frame buffer Gfx Unit
  • 21. Slide 19 T3 Add additional packages for GTK+ Home; 02.04.2009
  • 22. Qt deployment experiences Software modules with Qt Google gadgets Web browser Full functional browser  supplied as QT demo QT4  (Nokia open source license) Webkit libpng Jpg-6b libgif freetype NXP DirectFb DirectFb 1.xx Drivers TV5xx hardware: Frame buffer Gfx Unit
  • 23. Qt deployment experiences • Build system: Uses buildroot a specialized toolbox in which (most) cross compile options are already solved. See : • Buildroot is a set of Makefiles and patches that makes it easy to generate a cross-compilation toolchain and root filesystem for your target Linux system.
  • 24. Qt deployment experiences
  • 25. Qt deployment experiences • Performance: – Most open source applications are written to run on an 1.x GHz X86 with >512 MByte of RAM – Qt appears to be a real “embedded” optimized library. – Also incorporates a light window manager (QT). • This set-up behaves reasonably even when running on a Mips32 processor running at 350 MHz with only 130 MByte of memory. • System stays responsive
  • 26. Qt deployment experiences • Further usage experiences – Qt really builds out of the box – Very limited effort (a few days) to integrate the package with gadgets and other packages. – Runs with very limited effort. – Much more suitable for the embedded market than “dumb” (and bulky) PC packages. – Good documentation