Jmf Player problem.

hey all small question
i am trying to take a snapshot out of my webcam.....
this is my program and for some reason when i am running it whith the debugger
its working properly and i am getting an image, otherwise ,when i am runing it i am getting a null BufferToImage
here is a part of my program
can someone please explain me the reason and what i need to do???
thanks
Natik
                                                                                player = Manager.createRealizedPlayer(ml);
                         if ( player != null )
                              player.start();
                              formatControl = (FormatControl)player.getControl ( "javax.media.control.FormatControl" );
                              //Format currFormat = formatControl.getFormat();
                              Image photo=grabFrameImage();\\using FrameGrabbingControl,BufferToImage
                              playerClose();
                         }

yes, please give us the stack trace.
Edited by: JacobsB on Mar 17, 2008 2:09 PM
anyway, where does 'player' ever get instantiated. it looks like 'player' would always be null.

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Welcome to the Sun forums.
wizzo wrote:
..I am making a JMF player. However it is my requirement that while the video is being played, the video file may not be copied (through windows explorer) to some other location. .. That is a very odd requirement for a player. It seems you want to throw in abilities normally found in a file manager app. (or something of that nature).
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import java.io.File;
import java.io.IOException;
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===== ERROR BEGINS HERE =====
An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : EXCEPTION_ACCESS_VIOLATION occurred at PC=0x73F91D04
Function=[Unknown.]
Library=(N/A)
NOTE: We are unable to locate the function name symbol for the error
just occurred. Please refer to release documentation for possible
reason and solutions.
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at com.sun.media.amovie.ActiveMovie.dispose0(Native Method)
at com.sun.media.amovie.ActiveMovie.dispose(ActiveMovie.java:329)
at com.sun.media.amovie.AMController.doClose(AMController.java:632)
- locked <029F77C8> (a java.lang.Integer)
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at com.sun.media.BasicPlayer.doClose(BasicPlayer.java:229)
at com.sun.media.content.video.mpeg.Handler.doClose(Handler.java:158)
at com.sun.media.BasicController.close(BasicController.java:261)
at MyMP3Player.main(MyMP3Player.java:30)
Dynamic libraries:
0x00400000 - 0x00406000 C:\WINDOWS\system32\java.exe
0x77F50000 - 0x77FF9000 C:\WINDOWS\System32\ntdll.dll
0x77E60000 - 0x77F45000 C:\WINDOWS\system32\kernel32.dll
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0x77CC0000 - 0x77D35000 C:\WINDOWS\system32\RPCRT4.dll
0x77C10000 - 0x77C63000 C:\WINDOWS\system32\MSVCRT.dll
0x6D340000 - 0x6D46A000 C:\Program Files\Java\j2re1.4.1_02\bin\client\jv
m.dll
0x77D40000 - 0x77DCD000 C:\WINDOWS\system32\USER32.dll
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0x6D220000 - 0x6D239000 C:\Program Files\Java\j2re1.4.1_02\bin\java.dll
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Local Time = Wed May 28 09:46:23 2003
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# The exception above was detected in native code outside the VM
# Java VM: Java HotSpot(TM) Client VM (1.4.1_02-b06 mixed mode)
# An error report file has been saved as hs_err_pid180.log.
# Please refer to the file for further information.

Actually, I just ran another test. My previous fix does work 100%, but it is not necessary to call the Player::close() from within the AWT/SWING event dispatching thread, but it IS a requirement for you to have an AWT/SWING event dispatching thread running somewhere in the background, otherwise the darn thing crashes...
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