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NullPointerException in PlaybackControlPanel class

Open zbensal opened this issue 3 years ago • 4 comments

Hi,

I have a TS file that when I try to open consistently throws the following exception. VLC and other player programs can play the file without any issue.

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException: Cannot invoke "org.jmisb.api.video.IVideoFileInput.getPosition()" because "this.videoFileInput" is null at org.jmisb.viewer.PlaybackControlPanel.lambda$onVideoReceived$2(PlaybackControlPanel.java:196) at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:318) at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:771) at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:722) at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:716) at java.base/java.security.AccessController.doPrivileged(AccessController.java:399) at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86) at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:741) at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203) at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124) at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113) at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109) at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

  • OS: Windows and Mac
  • JDK17.0.5 and JDK1.8.0_341
  • jMISB version: 2.x and 1.12.0

Any help to debug the issue is appreciated.

zbensal avatar Dec 01 '22 16:12 zbensal

Can you make the file available?

bradh avatar Dec 01 '22 18:12 bradh

Unfortunately, I am not able to do that.

zbensal avatar Dec 02 '22 04:12 zbensal

That is OK, but you'll obviously be doing the debugging yourself. I can only suggest making sure you have a consistent build (i.e. a full clean build / install cycle), and setting appropriate debug breakpoints in places where the videoFileInput is being set, such as

https://github.com/WestRidgeSystems/jmisb/blob/main/viewer/src/main/java/org/jmisb/viewer/PlaybackControlPanel.java#L172

and

https://github.com/WestRidgeSystems/jmisb/blob/main/viewer/src/main/java/org/jmisb/viewer/PlaybackControlPanel.java#L177

bradh avatar Dec 02 '22 08:12 bradh

Thank you, Brad! I will keep you posted about my progress. Best.

zbensal avatar Dec 02 '22 08:12 zbensal