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.
87 lines
3.2 KiB
87 lines
3.2 KiB
#! /usr/bin/env python3
|
|
# -*- coding: utf-8 -*-
|
|
"""
|
|
Copyright 2020, Nils Hilbricht, Germany ( https://www.hilbricht.net )
|
|
|
|
This file is part of the Laborejo Software Suite ( https://www.laborejo.org ),
|
|
more specifically its template base application.
|
|
|
|
The Template Base Application is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
"""
|
|
|
|
"""
|
|
A helper module to quickly generate some cbox patterns and notes with lilypond and simple functions.
|
|
This is mostly meant for development and testing.
|
|
"""
|
|
|
|
#Standard Library Modules
|
|
import re
|
|
|
|
#Third Party Modules
|
|
from calfbox import cbox
|
|
|
|
#Template Modules
|
|
from . import pitch
|
|
from .duration import DB, DL, D1, D2, D4, D8, D16, D32, D64, D128
|
|
|
|
|
|
lyToMidi = {} #filled for all pitches on startup, below
|
|
for ly, _pitch in pitch.ly2pitch.items():
|
|
octOffset = (pitch.octave(_pitch) +1) * 12 #twelve tones per midi octave
|
|
lyToMidi[ly] = octOffset + pitch.halfToneDistanceFromC(_pitch)
|
|
|
|
|
|
lyToTicks = {
|
|
"16" : D16,
|
|
"8" : D8,
|
|
"4" : D4,
|
|
"2" : D2,
|
|
"1" : D1,
|
|
}
|
|
|
|
def ly(lilypondString:str):
|
|
"""Take string of simple lilypond notes, return midi pitches as generator of (pitch, ticks)"""
|
|
lastDur = "4"
|
|
for lyNote in lilypondString.split(" "):
|
|
try:
|
|
lyPitch, lyDur = re.split(r'(\d+)', lyNote)[0:2]
|
|
lastDur = lyDur
|
|
except ValueError:
|
|
lyPitch = re.split(r'(\d+)', lyNote)[0]
|
|
lyDur = lastDur
|
|
|
|
yield (lyToMidi[lyPitch], lyToTicks[lyDur])
|
|
|
|
|
|
def pattern(lilypondString:str, channel, velocity:int=100):
|
|
#Return (pbytes, durationInTicks)
|
|
"""
|
|
Return a cbox pattern
|
|
a python byte data type with midi data for cbox.
|
|
|
|
Channel is 1-16."""
|
|
#cbox.Pattern.serialize_event(position, midibyte1 (noteon), midibyte2(pitch), midibyte3(velocity))
|
|
channel -= 1
|
|
patternBlob = bytes()
|
|
tickCounter = 0
|
|
for midiPitch, durationInTicks in ly(lilypondString):
|
|
endTick = tickCounter + durationInTicks - 1 #-1 ticks to create a small logical gap. This is nothing compared to our tick value dimensions, but it is enough for the midi protocol to treat two notes as separate ones. Imporant to say that this does NOT affect the next note on. This will be mathematically correct anyway.
|
|
patternBlob += cbox.Pattern.serialize_event(tickCounter, 0x90+channel, midiPitch, velocity) # note on
|
|
patternBlob += cbox.Pattern.serialize_event(endTick, 0x80+channel, midiPitch, velocity) # note off
|
|
tickCounter = tickCounter + durationInTicks #no -1 for the next note
|
|
|
|
pattern = cbox.Document.get_song().pattern_from_blob(patternBlob, tickCounter)
|
|
#return patternBlob, startTick
|
|
return pattern
|
|
|
|
|