softcut: buffer-clear commands are slow / stall OSC thread

[catfact]

from lines (https://llllllll.co/t/cranes/21207/8?u=zebra)

[quote="Dan_Derks, post:8, topic:21207"]

occasionally when recording (even when on a brand new instance) i get phantom little echos of whatever im recording that appear WHILE i’m recording

ah. while updating this script, i found that the order of softcut’s buffer-clearing and reset commands seem to matter, but i’m still not entirely sure what order is best. i landed on this version after extensive command juggling and while it has not exhibited this behavior on my machine since then, i think i know what you’re describing. it’s like the playhead somehow gets engaged just a few ms behind the write head, yeah? [/quote]

i suspect this might be due to the fact that buffer clear commands are executed directly from OSC handler thread, and they are relatively heavy. so could be delaying the execution of subsequent commands or something.

one simple thing to try is just slapping some worker threads in there.

[catfact]

pushed branch with worker threads, still basically untested https://github.com/monome/norns/tree/softcut-buffer-workers

also: we are seeking each frame on buffer read! too slow https://github.com/monome/norns/blob/master/crone/src/SoftCutClient.cpp#L219

[itsyourbedtime]

nvm, usererror =)

[catfact]

closing, replaced by #934