GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

jonobr1

GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

in Contributed Library Questions • 2 years ago

GSVideo works like a dream in the PDE, but as soon as I try to bring it over to Eclipse I get this linking error. I have Imported all the .jar files (jna, gstreamer, and gsvideo) as well as the gstreamer folder with all the .dll files into my eclipse project. The error I get spit back to me:

can't load library SDL (SDL|libSDL|libSDL-0) with -Djna.library.path=C:/Users/jonobr1/workspace/GSMovieTestgstreamerwin. Last error:java.lang.UnsatisfiedLinkError: Unable to load library 'SDL': The specified module could not be found.

Two things in this error strike a cord with me. The first is that the folder C:Ujonobr1workspaceGSMovieTestgstreamerwin exists and the other is that the slashes are a different direction after GSMovieTest. Could the jna.library.path be set incorrectly? I tried changing it with System.setProperty("jna.library.path", "C:Usersjonobr1workspaceGSMovieTestgstreamerwin"); in setup() but no luck

Anyone run into this problem?

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http://jonobr1.com/

Replies(15)

PhiLho

Re: GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

2 years ago

Warning, Zoho eats backslashes...
And forward slashes works well in Windows, so keep them this way, it avoids issues with interpreting backslashes as escape sequences.

jonobr1

Re: Re: GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

2 years ago

Thanks for the tip phi.lho, that makes sense.

Do you know any other ways to set that property other than System.setProperty() ? This doesn't seem to affect jna.library.path

for the record I was referencing this SO Thread.

-- Update Jan 9th 1.14PM PST:This is because GSVideo writes System.setProperty() when GSMovie is instantiated overwriting my setProperty().

—
http://jonobr1.com/

jonobr1

Re: GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

2 years ago

Okay, so dat (being 64 bit architecture of Eclipse/JRE) was totally the problem. I just got everything to work with a 32 bit version of Eclipse and JRE.

—
http://jonobr1.com/

andres

Re: GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

2 years ago

Hi, I haven't been using Windows much lately, but I remember running GSVideo from Eclipse on Windows 7 64 bits. Yes, the key point is to use a 32 bits JDK. See this.

jonobr1

Re: Re: GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

2 years ago

Is there anyway to run GSVideo in a 64 bits JDK?

Would I have to compile/configure my own version of GStreamer to do this?

-- Update 11.18AM PST:

Looking at the OSSBuild Subversion tree it seems that there is a 64 bit version in the works. Gonna keep poking.

-- Update 12.40PM PST:

Hmmm, GStreamer doesn't seem to be the issue. Is it gstreamer-java.jar that can only run in 32 bits?

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http://jonobr1.com/

jonobr1

Re: Re: GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

2 years ago

Errors pulled from the local build of GStreamer packaged with GSVideo when running GSMovie example in Eclipse with JDK 64bit:

can't load library SDL (SDL|libSDL|libSDL-0) with -Djna.library.path=/gstreamer/win. Last error:java.lang.UnsatisfiedLinkError: Unable to load library 'SDL': The specified module could not be found.

Errors pulled from global build of GStreamer (10.7 Beta) when running GSMovie example in Eclipse with JDK 64 bit:

Exception in thread "Animation Thread" java.lang.UnsatisfiedLinkError: Could not load library gstreamer-0.10
at org.gstreamer.lowlevel.GNative.loadWin32Library(GNative.java:83)
at org.gstreamer.lowlevel.GNative.loadLibrary(GNative.java:43)
at org.gstreamer.lowlevel.GstNative.load(GstNative.java:42)
at org.gstreamer.lowlevel.GstNative.load(GstNative.java:39)
at org.gstreamer.Gst.<clinit>(Gst.java:59)
at codeanticode.gsvideo.GSVideo.init(GSVideo.java:98)
at codeanticode.gsvideo.GSMovie.<init>(GSMovie.java:88)
at codeanticode.gsvideo.GSMovie.<init>(GSMovie.java:65)
at GSMovieWrapper.<init>(GSMovieWrapper.java:39)
at processing.core.PApplet.handleDraw(PApplet.java:1583)
at processing.core.PApplet.run(PApplet.java:1503)
at java.lang.Thread.run(Unknown Source)

This leads me to believe that gstreamer-java.jar is the sole item that is contingent on windows 32 bit JDK.

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http://jonobr1.com/

andres

Re: GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

2 years ago

jono, thanks for investigating the errors. I will look at gstreamer-java in more detail and see if I can find a solution (I'm a committer on that project as well :-)

jonobr1

Re: Re: GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

2 years ago

No, thank you Andres! Having gone through a lot of your source now (including OSSBuild GStreamer binaries) the breadth of your work is vast. I can't laud you enough for the contribution that you are and have made to the Processing community. Totally sick.

—
http://jonobr1.com/

andres

Re: GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

2 years ago

One thing to consider is that the OSSBuild GStreamer binaries are 32 bits. Maybe this is causing the incompatibility with the 64 bits JDK. I'll try to figure this out.

andres

Re: GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

2 years ago

Yes, I think this is the problem. The gstreamer dlls need to be compiled in 64 bits in order to work with the 64 bits JVM. See this thread.

jonobr1

Re: Re: GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

2 years ago

Awesome, I was thinking that it either had to be gstreamer-java or the gstreamer build itself. So it sounds like all I should need to do is procur a version gstreamer compiled on windows 7. Keep you posted.

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http://jonobr1.com/

jonobr1

Re: Re: GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

2 years ago

I'm a little confused. On the OSSBuild download page I don't see source files. Do I download the bin folder to compile in Visual Studio 2008?

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http://jonobr1.com/

andres

Re: GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

2 years ago

Checkout the source from the svn, and then follow the build instructions posted in the wiki.

jonobr1

Re: Re: GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

2 years ago

Thanks Andres, I pulled off svn. What is the product of the compilation? a package, an executable, an .msi?

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http://jonobr1.com/

andres

Re: GSVideo 0.7 in Eclipse on Windows 7: dll UnsatisfiedLinkError

2 years ago

The product of the compilation process consists in the binary files (.exe, .dll, etc). Packaging then into an installation bundle is a separate step. The ossbuild forums are also a good place to post specific questions regarding problems with the compilation mechanism.

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