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Qt experiences on NXP's connected TV‐platform
Ben Pronk, NXP semiconductors
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
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
3
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 ICIntroduced the industry's first digital TV processor manufactured in 45nm technology 1 out of 2 TVs worldwide contains NXP chip
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
Digital Television Products
MASTERBEDROOM
portable display
KITCHENSTUDY
wireless LAN
KID’S BEDROOM
broadband
camera
LIVING ROOM
Media Server(DVD+RW/HDD
TV-to-TV link
RF remote control
home theater audio
INTERNET
Internet radio
The TV550, a Digital television SOC
Picture processing
Application CPU, Graphics
generation
Analogue Broadcast
Digital Broadcast
Analoguedigital I/O
Connectivity
Sound processing
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
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
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
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
Digital television widget implementation
• In the television small useful applications on top of the standard TV.
• Examples: Stock market, weather, latest news
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”.
Digital television widget implementation
Widget interpreter
Window manager
Graphics rendering system
Widget interpreter
TV5xx Hardware / SW platform
Graphics, Video, Audio
ControlIR Remote,Keyboard,
mouse
Linuxservices
THE Internet
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
sqlite libxslt libxml2 curl
Digital television widget implementation
TV5xx hardware: Frame buffer Gfx Unit
DirectFb 1.3
libpng tiff freetype
glib
libxml
fontconfigpixman
pango
cairo
GTK+
atk
Google gadgets
Webkit
Web browser (For now Gtk‐launcher test application)
libgif
NXP DirectFbDrivers
libgtk2
Jpg-6b
Components for Webkit/Google-gadgets based on GTK
T1
Slide 16
T1 Add additional packages for GTK+ Home; 02.04.2009
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
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
sqlite libxslt libxml2 curl
Qt deployment experiences
TV5xx hardware: Frame buffer Gfx Unit
DirectFb 1.3
libpng tiff freetype
glib
libxml
fontconfigpixman
pango
cairo
GTK+
atk
Google gadgets
Webkit
Web browser (For now Gtk‐launcher test application)
libgif
NXP DirectFbDrivers
libgtk2
Jpg-6b
Software modules without Qt
T3
Slide 19
T3 Add additional packages for GTK+ Home; 02.04.2009
Qt deployment experiences
TV5xx hardware: Frame buffer Gfx Unit
DirectFb 1.xx
libpng freetype
QT4 (Nokia open source license)
Google gadgets
Webkit
Web browser Full functional browser supplied as QT demo
libgif
NXP DirectFbDrivers
Jpg-6b
Software modules with Qt
Qt deployment experiences
• Build system: Uses buildroot a specialized toolbox in which (most) cross compile options are already solved.
See : http://buildroot.uclibc.org
• 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.
Qt deployment experiences
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
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