JACK transport

[xlambein]

First of all, I'd like to thank you all for this crate, it's really nice :-)

For a personal project, I need to have JACK transport functionalities, which are not implemented yet here. I might be able to contribute this feature to the crate myself, but I'm not exactly sure where to begin? Anyone knows what needs to be done, in order to add transport?

[wmedrano]

Is this the same as #50, if so, then the issue was that jackctl functions weren't linked into the version of jack that I had. If not, then I'm not familiar with JACK transport.

[xlambein]

Not super familiar with the inner workings of JACK in general, but from looking at the doc it seems that transport is not the same thing as jackctl. Transport is the tool that's used to synchronize the clocks of multiple JACK clients (e.g. Ardour with Hydrogen), whereas jackctl seems to be about starting and managing a JACK server.

[wmedrano]

Seems like I just missed it, so its fine to go ahead and add the feature to rust-jack.

Jack reference: https://jackaudio.org/api/group__TransportControl.html
And the functions do indeed seem to be part of the ffi in the jack-sys crate.

[x37v]

I'm working on some bindings for the query and control: https://github.com/x37v/rust-jack/tree/xnor/transport

I'm not planning to do slow sync or 'master' bindings at this time. Will submit a PR once I test out the control as at this point I've only tested the query.

[x37v]

#134

[x37v]

#134 has been merged, this provides transport query/control.

Transport timebase master is not implemented yet.