Never-ending drive letter issues...
Status: Beta
Brought to you by:
jsanpedro
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Hi there,
first of all: Great there is a new version of FOBS4JMF with many, many new and improved features out now!
However, when replacing the old version with the new one in my project, I got lotsa access violations on my development system (Win XP SP2, Java 1.4.2). I finally managed to boil the problem down to a funny (well, funny like funny-strange, I mean) drive letter issue. When running the following test program...
[code]
package test.media;
import java.awt.*;
import java.io.*;
import java.net.*;
import javax.swing.*;
import javax.media.*;
public class PlayerTest extends JFrame {
private static final String mediaURL = "file:///eclipse/Test/video.mov";
private static final String mediaFile = "/eclipse/Test/video.mov";
private PlayerTest() {
super("Media Player Test");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocation(100, 100);
getContentPane().setLayout(new BorderLayout());
}
public static void main(String[] argv) {
PlayerTest pt = new PlayerTest();
try {
URL url = new URL(mediaURL);
File f = new File(mediaFile);
URL furl = f.toURL();
System.out.println("URL from string: " + url);
System.out.println("URL from file: " + furl);
Player p = Manager.createRealizedPlayer(furl);
Component c = p.getVisualComponent();
pt.getContentPane().add(c, BorderLayout.CENTER);
pt.pack();
pt.setVisible(true);
p.start();
}
catch (Exception ex) {
ex.printStackTrace();
}
}
}
[/code]
I get an output as follows
--------8<--------
URL from string: file:/eclipse/Test/video.mov
URL from file: file:/E:/eclipse/Test/video.mov
Fobs4JMF - Native shared library found
1First Position: 0, 0 Duration: 1000
OpenError: Not initialized
Fobs Java2DRenderer: setInputFormat
Fobs Java2DRenderer: setInputFormat
Unexpected Signal : EXCEPTION_ACCESS_VIOLATION (0xc0000005) occurred at PC=0x807974F
Function=[Unknown.]
Library=C:\Programme\Java\j2re1.4.2_06\bin\client\jvm.dll
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.
Current Java thread:
at com.omnividea.media.parser.video.Parser.avProcess(Native Method)
at com.omnividea.media.parser.video.Parser.getNextFrame(Parser.java:117)
- locked <0x10092b78> (a com.omnividea.media.parser.video.Parser)
at com.omnividea.media.parser.video.VideoTrack.readFrame(VideoTrack.java:144)
at com.sun.media.SourceThread.process(BasicSourceModule.java:664)
at com.sun.media.util.LoopThread.run(LoopThread.java:135)
Dynamic libraries:
0x00400000 - 0x0040B000 C:\Programme\Java\j2re1.4.2_06\bin\javaw.exe
0x7C910000 - 0x7C9C7000 C:\WINDOWS\system32\ntdll.dll
0x7C800000 - 0x7C906000 C:\WINDOWS\system32\kernel32.dll
0x77DA0000 - 0x77E4A000 C:\WINDOWS\system32\ADVAPI32.dll
0x77E50000 - 0x77EE1000 C:\WINDOWS\system32\RPCRT4.dll
0x77D10000 - 0x77DA0000 C:\WINDOWS\system32\USER32.dll
0x77EF0000 - 0x77F36000 C:\WINDOWS\system32\GDI32.dll
0x77BE0000 - 0x77C38000 C:\WINDOWS\system32\MSVCRT.dll
0x678A0000 - 0x678DD000 C:\Norman\Nvc\BIN\Niphk.dll
0x770F0000 - 0x7717C000 C:\WINDOWS\system32\OLEAUT32.dll
0x774B0000 - 0x775ED000 C:\WINDOWS\system32\ole32.dll
0x08000000 - 0x08139000 C:\Programme\Java\j2re1.4.2_06\bin\client\jvm.dll
0x76AF0000 - 0x76B1E000 C:\WINDOWS\system32\WINMM.dll
0x10000000 - 0x10007000 C:\Programme\Java\j2re1.4.2_06\bin\hpi.dll
0x00390000 - 0x0039E000 C:\Programme\Java\j2re1.4.2_06\bin\verify.dll
0x003B0000 - 0x003C9000 C:\Programme\Java\j2re1.4.2_06\bin\java.dll
0x003D0000 - 0x003DD000 C:\Programme\Java\j2re1.4.2_06\bin\zip.dll
0x02D60000 - 0x02E72000 C:\Programme\Java\j2re1.4.2_06\bin\awt.dll
0x72F70000 - 0x72F96000 C:\WINDOWS\system32\WINSPOOL.DRV
0x76330000 - 0x7634D000 C:\WINDOWS\system32\IMM32.dll
0x5B0F0000 - 0x5B128000 C:\WINDOWS\system32\uxtheme.dll
0x030E0000 - 0x03131000 C:\Programme\Java\j2re1.4.2_06\bin\fontmanager.dll
0x736D0000 - 0x73719000 C:\WINDOWS\system32\ddraw.dll
0x73B30000 - 0x73B36000 C:\WINDOWS\system32\DCIMAN32.dll
0x738B0000 - 0x73980000 C:\WINDOWS\system32\D3DIM700.DLL
0x746A0000 - 0x746EB000 C:\WINDOWS\system32\MSCTF.dll
0x63000000 - 0x63014000 C:\WINDOWS\system32\SynTPFcs.dll
0x77BD0000 - 0x77BD8000 C:\WINDOWS\system32\VERSION.dll
0x07640000 - 0x07655000 C:\WINDOWS\system32\jmutil.dll
0x6AF80000 - 0x6BA4D000 C:\Java\fobs4jmf\fobs4jmf.dll
0x76C50000 - 0x76C78000 C:\WINDOWS\system32\imagehlp.dll
0x59DD0000 - 0x59E71000 C:\WINDOWS\system32\DBGHELP.dll
0x76BB0000 - 0x76BBB000 C:\WINDOWS\system32\PSAPI.DLL
Heap at VM Abort:
Heap
def new generation total 576K, used 281K [0x10010000, 0x100b0000, 0x104f0000)
eden space 512K, 46% used [0x10010000, 0x1004bb38, 0x10090000)
from space 64K, 66% used [0x10090000, 0x1009a928, 0x100a0000)
to space 64K, 0% used [0x100a0000, 0x100a0000, 0x100b0000)
tenured generation total 1408K, used 679K [0x104f0000, 0x10650000, 0x14010000)
the space 1408K, 48% used [0x104f0000, 0x10599fa8, 0x1059a000, 0x10650000)
compacting perm gen total 5120K, used 5049K [0x14010000, 0x14510000, 0x18010000)
the space 5120K, 98% used [0x14010000, 0x144fe620, 0x144fe800, 0x14510000)
Local Time = Mon Sep 05 09:56:56 2005
Elapsed Time = 1
#
# HotSpot Virtual Machine Error : EXCEPTION_ACCESS_VIOLATION
# Error ID : 4F530E43505002EF
# Please report this error at
# http://java.sun.com/cgi-bin/bugreport.cgi
#
# Java VM: Java HotSpot(TM) Client VM (1.4.2_06-b03 mixed mode)
#
# An error report file has been saved as hs_err_pid368.log.
# Please refer to the file for further information.
#
--------8<--------
and the program terminates. If, however, I exchange line 34 with
[code]
Player p = Manager.createRealizedPlayer(url);
[code]
everything works fine. The only apparent difference is that the URL derived from the File object does contain the full path including a drive letter. Any Idea why FOBS4JMF doesn't gulp this?
Another funny phenomenon is that I don't get an error when trying out the test program on a Win XP machine with Java 1.5 -- here both the "hand-made" and the File-derived URL are accepted by FOBS4JMF. However, playback from the latter seems erradic, i. e. most frames get skipped! Any explanation for this phenomenon? (Everything seems to work fine on Linux, though.)
Hope you consider this valuable information, and thanx again for developing FOBS --
Torsten
P.S. The test video I used can be downloaded from http://xaya.sourceforge.net/video.mov
Hi,
thanks for the report. It is really well documented and I hope to find a final solution to this damn problem with Win paths. Anyway, it won't be in the near future as I'm really busy right now.
Thanks!!
Jose San Pedro
Hi Jose,
>I hope to find a final solution to this damn problem
>with Win paths.
well, somehow it's my own fault if I use an operating system which allows multiple root directories... ;-) OK, for now I'll introduce a temporary dirty hack into my application.
Regards --
Torsten