You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
80 lines
3.6 KiB
80 lines
3.6 KiB
3 years ago
|
#! /usr/bin/env python3
|
||
|
|
# -*- coding: utf-8 -*-
|
||
|
|
from meta import ly2Track, initCbox, start, connectPhysicalKeyboards
|
||
|
|
|
||
|
|
def processMidiIn(eventLoop):
|
||
|
|
"""cbox event: ("event address", None, [firstByte, pitch, velocit])
|
||
|
|
|
||
|
|
Cbox event come in pairs
|
||
|
|
|
||
|
|
first is the normal midi-event + channel
|
||
|
|
channel = first & 0x0F
|
||
|
|
mode = first & 0xF0
|
||
|
|
|
||
|
|
Of course it doesn't need to be pitch and velocity.
|
||
|
|
But this is easier to document than "data2, data3"
|
||
|
|
|
||
|
|
Either call cbox.call_on_idle or cbox.get_new_events.
|
||
|
|
Both will clean the event queue but only the latter will give us
|
||
|
|
the results as python data.
|
||
|
|
"""
|
||
|
|
eventList = cbox.get_new_events()
|
||
|
|
lenList = len(eventList)
|
||
|
|
if lenList >= 2 and lenList % 2 == 0:
|
||
|
|
for (address, uninterestingStuff, event) in eventList: #we are only interested in the event, which is a list again.
|
||
|
|
#print (address, "event:", event, "playback:", cbox.Transport.status().playing)
|
||
|
|
if address in ("/io/midi/event_time_samples", "/io/midi/event_time_ppqn", ):
|
||
|
|
assert len(event) == 1
|
||
|
|
#We are very strict at the moment. A timestamp is only allowed if there wasn't another timestamp waiting. It is strict because only simple_event with len==3 eat up the timestamp. Any other event will trigger an error.
|
||
|
|
if processMidiIn.lastTimestamp:
|
||
|
|
raise NotImplementedError("the previous event didn't eat up the timestamp")
|
||
|
|
else:
|
||
|
|
if address == "/io/midi/event_time_ppqn":
|
||
|
|
assert cbox.Transport.status().playing == 1
|
||
|
|
during_recording = True
|
||
|
|
else:
|
||
|
|
assert not cbox.Transport.status().playing == 1
|
||
|
|
during_recording = False
|
||
|
|
processMidiIn.lastTimestamp = event[0]
|
||
|
|
|
||
|
|
elif address == "/io/midi/simple_event" and len(event) == 3: #we can only unpack the event after knowing its length.
|
||
|
|
assert processMidiIn.lastTimestamp # Midi events are always preceded by timestamps
|
||
|
|
first, second, third = event
|
||
|
|
channel = first & 0x0F
|
||
|
|
mode = first & 0xF0 #0x90 note on, 0x80 note off and so on.
|
||
|
|
|
||
|
|
if mode == 0x90: #Note On. 144 in decimal
|
||
|
|
midipitch = second
|
||
|
|
velocity = third
|
||
|
|
if during_recording:
|
||
|
|
print("ON: {}, Channel: {}, Pitch: {}, Velocity: {}".format(processMidiIn.lastTimestamp, channel, midipitch, velocity))
|
||
|
|
#else:
|
||
|
|
# print("ON Time-Samples: {}, Channel: {}, Pitch: {}, Velocity: {}".format(processMidiIn.lastTimestamp, channel, midipitch, velocity))
|
||
|
|
|
||
|
|
elif mode == 0x80: #Note Off. 128 in decimal
|
||
|
|
midipitch = second
|
||
|
|
velocity = third
|
||
|
|
if during_recording:
|
||
|
|
print("OFF: {}, Channel: {}, Pitch: {}, Velocity: {}".format(processMidiIn.lastTimestamp, channel, midipitch, velocity))
|
||
|
|
|
||
|
|
#elif mode == 0xB0: #CC
|
||
|
|
# ccNumber = second
|
||
|
|
# ccValue = third
|
||
|
|
#else:
|
||
|
|
#discard the events
|
||
|
|
|
||
|
|
processMidiIn.lastTimestamp = None
|
||
|
|
|
||
|
|
else:
|
||
|
|
raise NotImplementedError("Address type {} unknown".format(address))
|
||
|
|
|
||
|
|
|
||
|
|
eventLoop.call_later(0.1, processMidiIn, eventLoop)
|
||
|
|
processMidiIn.lastTimestamp = None
|
||
|
|
|
||
|
|
scene, cbox, eventLoop = initCbox("test01", internalEventProcessor=False)
|
||
|
|
#ly2Track(trackName="doWeNeedThis", lyString="c8")
|
||
|
|
eventLoop.call_later(0.1, processMidiIn, eventLoop) #100ms
|
||
|
|
connectPhysicalKeyboards()
|
||
|
|
start()
|