Re: [Jack-Devel] Mixed Windows / Linux system

On Mon, Jun 27, 2011 at 10:32:46AM +0200, Jeroen Van den Keybus wrote:
> Dear list,
> 
> 
> I would like to use Hauptwerk on a powerful Core i7 Windows PC. Computers
> with this performance level are costly and noisy, so I would like to use my
> small Ubuntu netbook at the keyboard, have its MIDI output sent over the LAN
> to the Windows PC and have Hauptwerk digest it. The output of Hauptwerk, in
> turn, must be sent back to the netbook. The resulting setup would be dead
> quiet at the keyboard. Good.
> 
> Initially, I played with the option of USBIP exposing the USB MIDI interface
> and an USB soundcard to the Windows PC directly, but I failed to properly
> export any USB device but a memory stick.
> 
> So I was thinking of using Jack. I got 1.9.7 running on the netbook and
> installed 1.9.7. on the Windows machine (which runs VIsta Ultimate 64-bit).
> 
> It doesn't work, but I think that is mostly due to me. Therefore, I have
> summarized these questions:
> 
> 1. Is it correct that the setup with the audio output (i.e. the Linux
> netbook) must be the master ?
> 
> 2. I end up with the master (Linux netbook) running 'jackd -dalsa' and
> 'jack_netsource -H 192.168.16.101', and the slave (Windows PC - IP
> 192.168.16.101) running 'jackd -dnet'. The master's jack_netsource says 'Not
> connected' and the slave ends up saying 'Waiting for a master...'. Is this a
> normal status ? How can I tell if the system works at the link layer level ?
> Must I run 'jack_load netmanager' perhaps ? (BTW I seem to be unable to
> launch the jackd server in Windows from Jack Control, so I start it from a
> Command Prompt window.)

on jack2 -dnet means netjack2
on linux your are using jack_netsource, which is netjack1
so either use jack2 -d netone
or do jack_load netmanager on linux, so you have netjack2

if you have jack1 on linux you only have netjack1

> 
> 3. I think it would be more useful for you that I use 1.9.8. I can install
> the test version on the Windows PC, but I have no ubuntu package for 1.9.8.
> I did get the SVN source for 1.9.8, but I do not seem to find any build
> instructions (such as ./configure and make, which don't work). Running the
> 1.9.8 Windows slave with the 1.9.7. Linux master seems to produce protocol
> incompatibility errors on the master (in qjackctl's message window). Is
> building Jack 1.9.8 a sensible thing to do ?
> 
> 4. I need to patch the netbook's MIDI interface and hw:0 device into Jack.
> What's the procedure (running jackd, patchbay, connect - which one first, is
> input and output referring to the local jackd) for this ?
> 
> 5. What do I need to patch into the Windows slave. I think I can't use ASIO,
> as I'm using the 'net' backend. How do I connect the virtual MIDI and audio
> to Hauptwerk ? Is this where VST comes in ?
> 
> I'm willing to do (at least Linux) software builds, test and report but I
> fear I need your help to understand the system architecture.
> 
> TIA,
> 
> 
> Jeroen.

> 
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-- 
torben Hohn

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