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mymidichan = 1 | |
-- midi data comes in three bytes - the first one is a status message as a decimal number | |
-- reference here https://www.midi.org/specifications-old/item/table-2-expanded-messages-list-status-bytes | |
-- so here's an array/table to set those values for each midi channel | |
midistatusbychan = { | |
-- note-on, note-off, cc, bend, Aftertouch, program change, poly aftertouch | |
{144, 128, 176, 224, 208, 192, 160}, -- 1 | |
{145, 129, 177, 225, 209, 193, 161}, -- 2 | |
{146, 130, 178, 226, 210, 194, 162}, -- 3 | |
{147, 131, 179, 227, 211, 195, 163}, -- 4 | |
{148, 132, 180, 228, 212, 196, 164}, -- 5 | |
{149, 133, 181, 229, 213, 197, 165}, -- 6 | |
{150, 134, 182, 230, 214, 198, 166}, -- 7 | |
{151, 135, 183, 231, 215, 199, 167}, -- 8 | |
{152, 136, 184, 232, 216, 200, 168}, -- 9 | |
{153, 137, 185, 233, 217, 201, 169}, -- 10 | |
{154, 138, 186, 234, 218, 202, 170}, -- 11 | |
{155, 139, 187, 235, 219, 203, 171}, -- 12 | |
{156, 140, 188, 236, 220, 204, 172}, -- 13 | |
{157, 141, 189, 237, 221, 205, 173}, -- 14 | |
{158, 142, 190, 238, 222, 206, 174}, -- 15 | |
{159, 143, 191, 239, 223, 207, 175} -- 16 | |
} | |
-- handle cc messages | |
local function midicc(ccnum, ccvalue, echo, chan) | |
-- do stuff | |
print ("cc "..ccnum.." : "..ccvalue) | |
end | |
-- handle note off events | |
local function note_off(note, echo, chan) | |
-- send midi note back to device? | |
if echo then | |
midi.send(midi_device, {midistatusbychan[chan][2], note, 0}) | |
end | |
-- do stuff | |
end | |
-- handle note on events | |
local function note_on(note, vel, echo, chan) | |
-- send midi note back to device? | |
if echo then | |
midi.send(midi_device, {midistatusbychan[chan][1], note, vel}) | |
end | |
-- do stuff | |
--print (note) | |
end | |
-- get data of a midi event | |
local function midi_event(data) | |
echo = true | |
--tab.print (data) | |
if data[1] == midistatusbychan[mymidichan][1] and data[3] > 0 then | |
note_on(data[2], data[3], echo, mymidichan) | |
elseif data[1] == midistatusbychan[mymidichan][1] and data[3] == 0 then | |
note_off(data[2], echo, mymidichan) | |
elseif data[1] == midistatusbychan[mymidichan][2] then | |
note_off(data[2], echo, mymidichan) | |
elseif data[1] == midistatusbychan[mymidichan][3] then | |
midicc(data[2], data[3], echo, mymidichan) | |
elseif data[1] == midistatusbychan[mymidichan][4] then | |
--bend(data[2], data[3]) | |
elseif data[1] == midistatusbychan[mymidichan][5] then | |
--aftertouch(data[2]) | |
elseif data[1] == midistatusbychan[mymidichan][6] then | |
--progchange(data[2]) | |
elseif data[1] == midistatusbychan[mymidichan][7] then | |
--polyaftertouch(data[2], data[3]) | |
end | |
end | |
-- add a midi device | |
midi.add = function(dev) | |
print('(test) midi device added', dev.id, dev.name) | |
dev.event = midi_event | |
midi_device = dev | |
end |
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