VLC compatible with Jack through PortAudio?

[bibo01]

I just tried using VLC player with dvd and music playback.
I set VLC's Output Module to PortAudio, but Jack doesn't see it. Obviously, Jack is started first.
Under VLC's Preferences/Audio/Output Module/PortAudio I tried different output device numbers (from 0 to 5), but Jack still doesn't see it. Nothing else is configurable.
I startup Jack with the following string: jackd.exe -S -R -dportaudio -dASIO::"ASIO LynxTWO" -r192000 -p4096 -i2 -o6
With either JRiver MC and Allocator, Jack sees the apps straight away.
Any help please?!
Thanks

[Jean-Baptiste Kempf]

Jack ?

[VLC_help]

The portaudio used in VLC might be built without Jack support. AFAIK ASIO support is also missing from portaudio used in VLC.

[bibo01]

j-b,
Jack is a virtual sound card/router that lets the users send audio between applications. So, if there is more than one application using ASIO like in my case a music player AND a crossover program, Jack is used. (http://www.grame.fr/~letz/jackdmp.html)

VLC_help,
What do you mean with "ASIO support is also mixing from portaudio used in VLC".
(sorry English is not my native language)

Ideally I would like VLC to use ASIO directly for music and dvd playback. However, if it can go out to Jack through PortAudio, it would be fine.

[Jean-Baptiste Kempf]

Well, I didn't know jack worked on windows...

[VLC_help]

mixing -> missing

[bibo01]

The portaudio used in VLC might be built without Jack support. AFAIK ASIO support is also missing from portaudio used in VLC.

Any chance that this is going to change in the near future?
Thanks

[VLC_help]

IIRC ASIO support would require linking to some external package which isn't GPL compatible. So for official VLC release, it won't prolly happen.

[bibo01]

That's a pity!
Can you say the same for Jack compatibility under Windows? After all, Jack is supported under Linux...
Or will you build Jack support in PortAudio used by VLC?
Thanks

[VLC_help]

I didn't find any info how to build Jack support to PortAudio under Win32. I can only find tutorial for ASIO.

[bibo01]

I would try to contact Stephane Letz who ported JACK to OS X and wrote the new C++ SMP-aware implementation jackdmp for Windows. His email is: letz@grame.fr
Furthermore, if you D/L Jack 1.9.2 (http://www.grame.fr/~letz/jack-1.9.2.tgz), in the DOC directory, there is relevant info/code for building support for PortAudio (I think) - for example,
Jack::JackPortAudioAdapter Audio adapter using PortAudio API
Jack::JackPortAudioDriver The PortAudio driver

It is a bit difficult for me to help in this respect, but in that d/l there is code, examples, DLLs. Stephane Letz is responsive and I am sure will point you in the right direction.

Thanks for your interest

[bibo01]

If you pursue this matter, please let me know.

[VLC_help]

I am not gonna do that, but I opened trac ticket in case someone else is interested on this.
http://trac.videolan.org/vlc/ticket/2786

[Jean-Baptiste Kempf]

I will not take care of it either.

[bibo01]

Thanks anyway.