Compiling VLC with Java Bindings fails

[laralura]

Hello,

it would appear the Java Bindings are *very* experimental

After finally getting rid of all the problems concerning displaced includes [1] and missing JNI-Headers [2], I'm stranded with the following error message:

Code: Select all

video-jni.cc: In function `void Java_org_videolan_jvlc_Video__1reparent(JNIEnv*, _jobject*, _jobject*)': video-jni.cc:185: error: invalid conversion from `HWND__*' to `libvlc_drawable_t' video-jni.cc:185: error: initializing argument 2 of `int libvlc_video_reparent(libvlc_input_t*, libvlc_drawable_t, libvlc_exception_t*)'

The g++ call was trying to compile video-jni in vlc-0.8.6-svn/bindings/java/src

Code: Select all

g++ -mno-cygwin video-jni.cc -Wsign-compare -Wsign-compare -Wall -mms-bitfields -pipe `top_builddir=../../.. ../../../vlc-config --cflags pic` -I../../ -I ../../include -I/cygdrive/c/Program\ Files/Java/jdk1.5.0_07/include -I/cygdrive/c/Program\ Files/Java/jdk1.5.0_07/include/win32 -c -o video-jni.o

I'm using the SVN snapshot from 2006-08-16, so it should be quite recent. The compiler is (obviously) running in a cygwin environment. Configure flags were chosen according to the README with the exception of --enable-java-bindings. The remainder of vlc (up to the java bindings) was built without problems.

Could someone lend me a helping hand?

Now for the "links" from above: I have no clue how to supply a working patch for the problems, so please bear with me providing a description:

[1] The Makefile in java/src is missing one ../ to the include path ("-I ../../include" should be "-I ../../../include", I created a symlink)

[2] make should first compile the class files, then include the headers generated from them in the C-Code - it's a bug in the Makefile. Additionally the directory java/includes was missing - should be created as well. And finally:
* both, javah and gcj would not work unless I added "-classpath ."
* javah requires its options first: "($JHC) -o includes/(...) org(...)"
* javah wants the package separated by "." not "/" so it' should be "org.videolan.jvlc." instead of "org/videolan/jvlc/"

Regards

[laralura]

I'm replying to myself here, but since there have been several views of this topic with no response I'd like to ask whether

• my report is just incomplete or
• no one else has been trying this or
• if the Java bindings on Windows are dead.

According to the README of JVLC it is supposed to work, so what am I missing?

[The DJ]

None of the forum moderators have ANY experience with the Java bindings.

[laralura]

None of the forum moderators have ANY experience with the Java bindings.

That's to bad, but thanks for your response. Before posting I've look through the mailing list archives, but it seems there's no one maintaining the windows port.
Do you or anyone else know, who did maintain it in the first place? The JVLC website merely mentions it should be working in some places and that it doesn't in others

[oober]

Why not install linux on a separate machine and compile it from there. I have had very little problems compiling both vlc and jvlc on my gentoo box.

[oober]

Why not install linux on a separate machine and compile it from there. I have had very little problems compiling both vlc and jvlc on my gentoo box. It might even save you some more time than it takes you to sort out all those errors.

[littlejohn]

None of the forum moderators have ANY experience with the Java bindings.

That's to bad, but thanks for your response. Before posting I've look through the mailing list archives, but it seems there's no one maintaining the windows port.
Do you or anyone else know, who did maintain it in the first place? The JVLC website merely mentions it should be working in some places and that it doesn't in others

Hi,
I'm the java bindings developer (duck ).
I do suggest to use svn trunk version, which is mantained for both GNU/Linux and Windows platforms. Anyway, I'm fixing version 0.8.6 now. When you configure trunk version use: --enable-java-bindings --disable-libtools .

Cheers,
Filippo