JMF Guide

1
JMF Guide

• CSC 461/CSC 561 Multimedia Systems
• Jan 09

2
Introduction

• Java Media Framework is an API which enables Java
  applications/applets to work with time-based
  audio and video files/streams.
• Latest Version 2.1.1 implemented by Sun and IBM.

3
Introduction

• Binaries of this API is available as cross
  platform and OS dependent.
• It is best to use OS dependent.

4
Capabilities
5
Capabilities

• Format support
• File Formats WAV, MP3, AU, AIFF, MOV, VIV, AVI,
  RTP
• Audio Codecs PCM, ADPCM, Mu-Law, GSM, G.723
• Video Codecs Cinepak, H.263

6
Basics Time Model
7
Basics Data Model
8
Basics Controls
9
Players States

• Unrealized
• Realizing
• Realized
• Pre-fetching
• Pre-fetched
• Started

10
Processor
11
Controlling Media Playback

• Set/Get Rate
• Set/Get time
• Duration

12
Player Applet

• import java.applet.
• import java.awt.
• import java.net.
• import javax.media.
• public class PlayerApplet extends Applet
  implements ControllerListener
• Player player null
• public void init()
• setLayout(new BorderLayout())
• String mediaFile getParameter(FILE)
• try
• URL mediaURL new URL(getDocumentBase(),
  mediaFile)
• player Manager.createPlayer(mediaURL)
• player.addControllerListener(this)
• catch (Exception e)
• System.err.println("Got exception "e)

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Player Applet

• public void start()
• player.start()
• public void stop()
• player.stop()
• player.deallocate()
• public void destroy()
• player.close()
• public synchronized void controllerUpdate(Contro
  llerEvent event)
• if (event instanceof RealizeCompleteEvent)
• Component comp
• if ((comp player.getVisualComponent()) !
  null)
• add ("Center", comp)
• if ((comp player.getControlPanelComponent())
  ! null)
• add ("South", comp)
• validate()

14
Useful Links

• Download http//java.sun.com/javase/technologies/
  desktop/media/jmf/2.1.1/download.html
• Documentation http//java.sun.com/javase/technolo
  gies/desktop/media/jmf/reference/docs/index.html
• Code Samples http//java.sun.com/javase/technolog
  ies/desktop/media/jmf/reference/codesamples/index.
  html

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Useful Links

• Guide http//www.cdt.luth.se/johank/smd151/jmf/j
  mf2_0-guide.pdf
• JMF Movie Player http//rsbweb.nih.gov/ij/plugins
  /jmf-player.html
• More Code Samples http//jan.newmarch.name/intern
  etdevices/jmf/lecture.html