Re: [Jack-Devel] How does --hwmon work?

David Kastrup <dak(a)gnu.org> writes: To expound slightly on that: hdspmixer is not integrated into Ardour, and as opposed to its Windows/MacOSX software counterpart (Totalmix), it does not offer Midi automation. I am currently in the process of Frankensteining a Roland FR1b "virtual accordion" with soft- and hardware Midi expanders, and the Roland only has a single Midi connector that is either in- or output. So when the registration calls for the Roland to be silent, I have to access the mixer programmatically. Since I don't want the software to be tied to a particular soundcard, a more generic interface that _does_ use hardware monitoring/mixing of some kind internally when available would seem like the best fit. But it's not clear to me where which stuff is being done and whether, say, using jack_mix_box for the Roland sound control will magically buy me "zero-latency" monitoring or not. It really depends on what --hwmon does and what interfaces of Jack are involved. I can find zilch information on that in the documentation of either software, the manual pages are vague and terribly outdated and "just read the source code", while being a possible last resort, seems like I might be missing something here. And if I am missing it, maybe it warrants better visibility so that others in a similar situation might find it easier? Many ALSA cards have some sort of hardware mixer, and a whole lot of them are shakier in full-duplex mode and would benefit from a hardware monitoring solution where applicable. So I don't think this is an "esoteric uses" only question. -- David Kastrup