[LAD] Re: Pipewire

On Fri, Aug 16, 2024 at 10:24:10PM +0200, Wim Taymans wrote: I don't want to spoil you holidays ! Anyway I'll be in holidays myself in a week, so all of this will have to wait until late September. But meanwhile I'm more confused than ever. You last remark: seems to suggest that you think that I want to use PW's Jack emulation. That is not the case. I want to run all native Jack apps in Jack2, and use the 'Jack Tunnel' to allow all others (e.g. a video conference app) to connect to Jack. Or to route Jack signals to a bluetooth device. I really fail to understand this. If a sound card or app has N inputs why should it ever have any other number of input ports ? Unless a 'port' can represent more than single signal, e.g. a group of signals that should always used together. Simplest example would be a stereo 'port' with L and R signals. But then I'd expect such groups be defined by the application. For example my Tetraproc Jack app has 8 inputs but logically these are 2 groups of 4: one Ambisonic A-format input and B-format input. It makes no sense at all to group them otherwise, nor to swap or combine signals within each group. So it's certainly not up to a session manager to define this - it's fixed by the app's function. Of course in the Jack world such groups don't exist - only the port names can be used to 'suggest' them. So at least for the Jack Tunnel the only interpretation that makes sense is that each port represents a single audio signal. Is there any way to set the port names, or at least to have generic ones (numbered, starting at 0 or 1 - both make sense depending on the situation) ? Another mystery is the difference between context.modules and context.objects. I used to think that the modules section somehow defines what sorts of objects are available (by loading the code required to create them), and the objects section actually creates them. But that is obviously not true: the modules section contains actual parameters for objects. And in my config I have the Jack Tunnel in context.modules only and coppwr shows it is created and even 'Running'. But where should these things go in the config file ? I tried a lot possible variations in my config file, it didn't make any difference. That's a general problem: which properties/options are available and where should they go ? Finally, if that is the only solution, I could create my own 'session manager' that would just support what I need and probably could be relatively simple. If all it takes is handling and sending POD messages it can probably be done in Python. Ciao, enjoy the holidays ? -- FA