Java Media Framework - JMF and Linux Performance Pack
Following the Install Docs on
http://java.sun.com/products/java-media/jmf/2.1.1/setup-linux.html
i am trying to install the linux performance pack of the JMF.
However it exits without any response :(
Why could that be?
Installed: Sun JDK 1.6.0
System: Linux 2.6.20-gentoo-r3 SMP i686
EDIT: The Installer now starts. Maybe the file was corrupt, I used a newly downloaded one. BUT:
Now i have another problem:
Extracting...
./install.sfx.21428: /lib/libc.so.6: version `GLIBC_2.1' not found (required by ./install.sfx.21428)
./install.sfx.21428: /lib/libc.so.6: version `GLIBC_2.0' not found (required by ./install.sfx.21428)
Installed:
sys-libs/glibc-2.5-r1
Message was edited by:
pholthau
[789 byte] By [
pholthaua] at [2007-11-26 23:06:34]
# 1
I post the same question one month ago, but it seems nobody knows the answer. I can't even find the instructions for install the cross plataform release. My system is fedora Core 6.
I tried to recompile glibc2.1 but it's makefile detect my new release of glibc and don't make the update. I think we should contact Sun
# 2
In Gentoo there is a "glibc-compat20" USE-flag for installing glibc. I thought maybe this would solve the problem but it still persists. Maybe contacting sun would be a solution... If you write an E-Mail to them, it would be kind if you cc me: patrick.holthaus[aeht]uni-bielefeld.de
# 3
Installed: Sun JDK 1.6.0System: Linux 2.6.20-gentoo-r3 SMP i686Wild guess - try removing JDK 1.6.0 and insatll JDK.1.4.xJMF has NOT been supported by SUN for a long time
# 4
Although I don't think that this could be the reason(because obviously it has something to do with the glibc,which is not java dependent) i will give it a try and report back.
# 5
I ran the binary on another computer (with older libraries) and it just worked there.
Now jmfinit can find various video4linux webcams. But trying to create a processor will result in an IOException:
The code:
public static void main(String[] args) {try{
Vector devices = CaptureDeviceManager.getDeviceList(new VideoFormat(null));
//MediaLocator ml = new MediaLocator("v4l://0");
CaptureDeviceInfo dev = (CaptureDeviceInfo) devices.iterator().next();
Processor p = Manager.createProcessor(dev.getLocator());
} catch(ArrayIndexOutOfBoundsException e){
System.err.println("Please add a valid media file as a parameter!"); //$NON-NLS-1$
e.printStackTrace();
} catch (MalformedURLException e) {
System.err.println("URL not valid!"); //$NON-NLS-1$
e.printStackTrace();
} catch (NoPlayerException e) {
System.err.println("No Player found!"); //$NON-NLS-1$
e.printStackTrace();
} catch (IOException e) {
System.err.println("Could not read file!"); //$NON-NLS-1$
e.printStackTrace();
}
}
}
The Exception:
java.io.IOException: java.lang.Error: Couldn't initialize capture devicejava.io.IOException: java.lang.Error: Couldn't initialize capture device
No Player found!
javax.media.NoProcessorException: Error instantiating class: com.sun.media.protocol.v4l.DataSource : java.io.IOException: java.lang.Error: Couldn't initialize capture device
at javax.media.Manager.createProcessorForContent(Manager.java:1614)
at javax.media.Manager.createProcessor(Manager.java:627)
at hi2r.test.MotionPackageTest.main(MotionPackageTest.java:38)
If someone knows why this could happen, please tell me.
# 6
Have you got the WebCams working under Linux already?
With other applications ?
Also, code wise, try replacing
Vector devices = CaptureDeviceManager.getDeviceList(new VideoFormat(null));with
Vector list = CaptureDeviceManager.getDeviceList ( null );regards,
Owen
# 7
First of all: Thanks for you suggestions.But other application work just fine with the video4linux devices.And I already used the other syntax you posted.The error occurs with both versions :(
# 8
Well, this is a not elegant solutionChange your distro for Ubuntu, It works for me!. Whell, i could do this because my data it's on another partition, not in my linux partition, so I could change it with no much trouble, and I didn't have to edit anything.
# 9
Patrick,
the problem occurs when JMF is not installed into the JRE -- apparently,
JMF doesn't pick up its native helper implementations in that case.
This holds even when java.library.path is set, for some odd reason I cannot fathom.
So, copy JMF-2.1.1e/lib/*.so to $JAVA_HOME/jre/lib/i386 and you should be fine.
The reason that the device appears in the list nonetheless is
because the list is generated statically by jmfinit. jmfinit loads
the helper binaries through another mechanism.
Hope this helps,
Ingo
# 10
Dear Ingo,
I had the same problem (jmstudio captured well, but my apps couldn't initialize cam). Your solutions worked fine on my machine (Debian, java 1.5.0_10, JMF 2.1.1e). Just an advice to who wants to do the same: write somewhere that you copied jmf libraries directly in jre lib path (exactly wich files, wich version and where); otherwise, if you forget it and you update only jmf or only jre, you're going to have really hard debug time! Maybe we could notify this issue as a bug (the use of different paths of jmstudio and runtime apps).
Now I wonder if the on Linux there's no possbility to use two usb cams, like on WinXp...
Thanks, you saved LOTS of my time!
Regards
Eugenio
