[vlc] VLC plugin crashes

[Tony Anecito]

Hi Christopher,

I am using VLC with java but on windows and do not
experience this issue (been using VLC for almost a
year. It is probably specific to the way you are
implementing VLC.

Regards,
Tony Anecito
Founder,
MyUniPortal
http://www.myuniportal.com


--- Christopher Deckers <chrriis at gmail.com> wrote:

> Hi all,
> 
> I have a crash that I can reproduce easily. This
> crash affects the VLC
> plugin (latest download) on an Ubuntu 7.10.
> 
> First, a little bit of background as it is not a
> common setup...
> 
> Currently, there is no proper cross-platform Media
> player available to
> Java applications. To fill the gap, I created an
> open-source project
> (DJ Native Swing) which uses SWT's native
> capabilities to integrate
> native components to Swing.
> Since I want a native media player but I don't want
> to handle the
> complexity of the installation, I embed a native SWT
> web browser in a
> Swing application, with an html page that loads the
> desired plugin. I
> then control the application with Javascript calls.
> 
> With VLC, this approach works on Windows (IE, and
> Mozilla browsers)
> but it crashes easily on Linux when I perform
> certain Swing actions.
> For example, I open a file chooser while a video is
> playing, and when
> I close this file chooser the application crashes
> with this error:
> 
> X Error of failed request:  BadWindow (invalid
> Window parameter)
>   Major opcode of failed request:  20
> (X_GetProperty)
>   Resource id in failed request:  0x320001d
>   Serial number of failed request:  1203
>   Current serial number in output stream:  1203
> 
> I made a simple test case:
> http://chrriis.free.fr/VLCTest.zip
> Extract the zip and run: java -jar VLCTest.jar
> 
> By default, it loads some movie file from the
> Internet, but you can
> pass a URL as a parameter to get a different stream.
> To create the
> crash, click on the button when a movie is playing
> to open a file
> chooser, and then hit "cancel" to close it. Usually,
> it crashes
> immediately, sometimes you have to do it a second
> time.
> 
> Note that it is using the web browser from SWT which
> requires
> XULRunner to be installed. Moreover, I noticed I had
> to run the
> following command to get the VLC plugin to work in
> XULRunner:
> sudo ln -s -t /usr/lib/xulrunner/plugins
> /usr/lib/mozilla/plugins/libvlcplugin.so
> (In fact, I wonder why the install does not add VLC
> to XULRunner by default)
> 
> VLCTest.jar is an archive that also contains the
> source file
> (VLCText.java) in case you want to look at the Java
> code.
> 
> I am not 100% sure it is a problem with VLC (it
> could be a problem
> with Swing), but I have not seen such instability
> with other plugins.
> For example, if I replace the code to get a flash
> application, the
> steps described above don't produce any problems.
> 
> I truly believe that desktop Java applications would
> benefit from
> having a cross platform media player, and I believe
> VLC could be a
> popular media player for such use case, which is why
> I hope someone
> can help finding (and fixing?) the cause of this
> issue.
> 
> Cheers,
> -Christopher
>
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