Platform for x-smiles Researcher Helsinki University of Technology

Platform for X-Smiles

• Researcher

• Helsinki University of Technology

• [e-mail]

• http://www.x-smiles.org/

Outline

• Introduction

• Overview of the platform

• Operating system
• Java Runtime Environment

• Conclusions

Introduction

• What is platform?

• In the literary sense “A raised surface”
• In the technical sense “Underlying hardware and/or software for a system”

• We emphasize on the software

• X-Smiles uses “Java”, hence for executing byte code JRE is required within the platform

Overview of the platform

• Hardware: Currently, using PC environment, though primitive tests have been carried in embedded system

• Software: Comprises of Operating System - Linux w/o X-server and system drivers

Overview of the platform (contd..)

• Java Runtime Environment:

• Kaffe’s ‘clean-room’ implementation is used
• For graphical applications, rendering is done using framebuffer
• Framebuffer provides the high level abstraction of the graphics h/w
• Vesafb is the framebuffer driver for the Intel architecture, which supports VESA2.0 compliant graphics hardware.
• 8bpp to 24bpp and 640x480 1600x1200

Conclusions

• With a working prototype system, the next step is to ‘tweak’ it to achieve better performance

• Have native decoders for video rendering
• Currently used JRE does not provide the much needed functionality to support all of the features of the browser
• Memory foot print and processor load is still under scrutiny