Created
September 10, 2022 18:44
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VST Protoplug midi plugin - Simple Arp with CH2 note exclusive
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require "include/protoplug" | |
speed = 0.25 | |
notelength = 0.2 | |
notes = {0,7,12} | |
buffer = {} | |
buffer2 = {} | |
time = 0 | |
lasttime = 0 | |
lastnote = -1 | |
blockarp = false | |
function plugin.processBlock(samples, smax, midiBuf) | |
pos = plugin.getCurrentPosition () | |
rate = plugin.getSampleRate() | |
noteduration = (( rate * 1 * 60 ) / pos.bpm) * speed | |
for ev in midiBuf:eachEvent() do | |
if ev:isNoteOn() and ev:getChannel()==1 then | |
if lastnote ~= -1 then | |
table.insert(buffer2,{lastnote,0}) | |
lastnote = -1 | |
end | |
time = 0 | |
lasttime = -1 | |
offset = 0 | |
buffer = {} | |
for i=1, #notes do | |
table.insert(buffer,{0+offset,ev:getNote()+notes[i],127}) | |
table.insert(buffer,{(noteduration*notelength)+offset,ev:getNote()+notes[i],0}) | |
offset = offset + noteduration | |
end | |
elseif ev:isNoteOff() and ev:getChannel()==1 then | |
if lastnote ~= -1 then | |
table.insert(buffer2,{lastnote,0}) | |
lastnote = -1 | |
end | |
buffer = {} | |
elseif ev:isNoteOn() and ev:getChannel()==2 then | |
table.insert(buffer2,{ev:getNote(),127}) | |
if lastnote ~= -1 then | |
table.insert(buffer2,{lastnote,0}) | |
lastnote = -1 | |
end | |
blockarp = true | |
elseif ev:isNoteOff() and ev:getChannel()==2 then | |
table.insert(buffer2,{ev:getNote(),0}) | |
blockarp = false | |
end | |
end | |
midiBuf:clear() | |
if #buffer2 then | |
for k,n in ipairs(buffer2) do | |
ev = midi.Event.noteOn(1, n[1], n[2]) | |
midiBuf:addEvent(ev) | |
table.remove(buffer2,k) | |
end | |
end | |
if #buffer and not blockarp then | |
for k,n in ipairs(buffer) do | |
if n[1]<time + smax and n[1]>=lasttime then | |
offset = math.ceil(math.max (0, math.min ((noteduration - time), smax - 1))) | |
ev = midi.Event.noteOn(1, n[2], n[3]) | |
ev.time = offset --not sure if this will fix timing issues | |
if n[3]>0 then | |
lastnote = n[2] | |
else | |
lastnote = -1 | |
end | |
midiBuf:addEvent(ev) | |
end | |
end | |
end | |
time = (time + smax) % (#notes * noteduration) | |
if lasttime>time then | |
lasttime = -1 | |
end | |
end |
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