Home » Eclipse Projects » Rich Client Platform (RCP) » [xpost] dll's, path, and jmf in swt
| [xpost] dll's, path, and jmf in swt [message #455241] |
Tue, 19 September 2006 06:49  |
 Wouter van Atteveldt
Messages: 9
Registered: July 2009 |
Junior Member |
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[crossposted from eclipse.platform.swt]
Dear all,
I want to add video playback in my Eclipse RCP app and thought that using
JMF (java media framework) using SWT_AWT would be a good way to do this.
If I run a standalone pure awt java program to create a player and display
it it works fine, so jmf is installed correctly and java can find the needed
dll's.
However, if I turn it into a SWT app using SWT_AWT, I get a
"javax.media.NoPlayerException: Cannot find a Player for ..". I can print
the duration and format of the datasource so it has no trouble locating the
URL and parsing the format.
My guess is that JMF needs a number of dll's, which are found in the
standalone java since they are on the path, but as a SWT application it can
no longer find the dll's. Currently, I run the test player as an "SWT
Application" in eclipse, but my goal is to turn it into a RCP view.
How do I configure the path for dll's in an Eclipse RCP / SWT program? Am I
doing something else wrong?
Any help greatly appreciated,
Wouter
----
public class testswt {
public static void main(String[] args) throws Exception {
System.out.println("Creating player");
URL u = new File("d:/video/tv/Video/test.mpg").toURL();
DataSource ds = new URLDataSource(u);
ds.connect();
System.out.println(u + " " + ds.getDuration().getSeconds() + " " +
ds.getContentType());
Player p = Manager.createRealizedPlayer(ds); // <<------------ LINE 35
error occurs here --------------<<
p.start();
System.out.println("showing frame");
Display display = new Display ();
final Shell shell = new Shell(display);
Composite comp = new Composite(shell, SWT.EMBEDDED);
Frame x = SWT_AWT.new_Frame(comp);
x.add(p.getVisualComponent());
p.start();
shell.setLayout(new GridLayout());
comp.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
shell.open ();
while (!shell.isDisposed ()) {
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
}
}
---
Creating player
file:/d:/video/tv/Video/test.mpg 9.223372036854776E9 video.mpeg
Exception in thread "main" javax.media.NoPlayerException: Cannot find a
Player for: javax.media.protocol.URLDataSource@253498
at javax.media.Manager.createPlayerForSource(Manager.java:1512)
at javax.media.Manager.createPlayer(Manager.java:500)
at javax.media.Manager.createRealizedPlayer(Manager.java:579)
at testswt.main(testswt.java:35)
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| Re: [xpost] dll's, path, and jmf in swt [message #455328 is a reply to message #455313] |
Thu, 21 September 2006 09:19  |
Daniel Krügler
Messages: 853
Registered: July 2009 |
Senior Member |
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Sebastian Gruber wrote:
> I implemented exactly the same (I used SWT_AWT to embed JMF's player
> component into an RCP view) and it worked. This did the trick for me: I
> copied all the JMF DLLs (jm*.dll) from my C:\Windows\system32 directory
> to the bin directory of the Java runtime. After that, it worked. I was
> rendering a live captured webcam but I don't think that makes a difference.
Sorry, but copying system libraries into required directory sounds like
an awful solution for me, at least ;-)
I was interested in the approach discussed in the thread mentioned by
Paul Webster, because there was used an alternative (via
Bundle-NativeCode) compared to the standard solution, which recommends
to put the native libraries into the root of the plug-in. Although
the last option usually is quite simple to realize, it can easily
break in complex use-cases. Currently I don't know whether the
Bundle-NativeCode can be applied in cases, where the standard procedure
breaks down, and I would be strongly interested, if someone could share
his or her knowledge concerning this.
In our case we would like to pack JMagick
http://www.yeo.id.au/jmagick/
into an Eclipse plug-in. Although we put the required ImageMagick native
libraries into the plug-in root, we stumbled across the problem, that
this was not sufficient (Some kind of "Handle could not be found"
error). Currently we ended up with a half-baked solution, where the
*additional* installation of ImageMagick is required. I really would
appreciate, if someone could point out, that this is not necessary,
because one could package *all* ImageMagic&JMagick libraries into one
(or two ;-) plug-ins...
Greetings from Bremen,
Daniel Krügler
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| Re: [xpost] dll's, path, and jmf in swt [message #459636 is a reply to message #455241] |
Tue, 05 December 2006 08:50 |
Eclipse User |
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