FYP0002 Wireless Cyber Campus

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FYP0002 Wireless Cyber Campus

• Supervisor Prof. Michael R. Lyu
• Student Jang Kim Fung
• Tang Ho Man

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Outline of Presentation

• Introduction
• System architecture
• Our Progress
• Problem facing
• Our future work

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1) Introduction

• The aim of our project is to implement a virtual
  classroom for lecturer and student
• Lecturer can present lecture through our system
• Students can attend lesson and raise questions
  through network
• Lecturer and students can have an interactive way
  of communication like video conference, chatting.

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2) System Architecture
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3) Our Progress

• We have implemented part of the system, including
  server and client using Visual C, Direct Show
  and Winsock 2
• Visual C has a Microsoft Foundation Class
  Library such that it can provide user-friendly
  interface.

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3) Our Progress

• DirectShow is a Microsoft Windows API such that
  it can provide playback multimedia streams.
• WinSock is the network application-programming
  interface (API) for Microsoft Windows

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Server

• Central control of the whole system
• Monitor clients login to/logout from the server
• Broadcast message to all the clients
• Forward the unicast message to destination client

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Client

• Send messages to others
• Create public or private chat rooms for
  discussion
• Lecturer presents lecture and can save the video
  for student reference.
• Students attend lesson and can view the saved
  video of lecturer through the video player.

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Snap Shots of server side
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Snap Shots of client side (1)
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Snap Shots of client side (2)
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Snap Shots of client side (3)
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4) Problem facing

• DirectShow can capture video and play video well
  in a local machine. But it does not provide a
  filter which supports video capturing and
  real-time transmition of the video across the
  network.
• We have to implement the source filter ourselves.

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4) Problem facing

• To write a source filter, three problems have to
  solve
• Get the real-time video
• Real-time compress the video
• Transmit the video across network
• DirectShow does not have much resources and
  documentation on implementation of such filter.
• We fail in writing the filter.

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5) Our future work

• Implement the software using Java with JMF (Java
  Media Framework) API.
• Study Java networking, thread and Java JMF.
• JMF can capture and compress video.
• JMF supports RTP (Real-Time protocol) which can
  easily transmit video across network.
• Try to write a one-to-one video conference first.