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.
130 lines
4.0 KiB
130 lines
4.0 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/>.
|
|
"""
|
|
|
|
"""
|
|
This file handles various durations and their conversions.
|
|
"""
|
|
|
|
|
|
import logging; logger = logging.getLogger(__name__); logger.info("import")
|
|
|
|
|
|
from engine.config import METADATA
|
|
|
|
#Suggested import in other files:
|
|
#from template.engine.duration import DB, DL, D1, D2, D4, D8, D16, D32, D64, D128
|
|
#import template.engine.duration as duration
|
|
|
|
|
|
MAXIMUM_TICK_DURATION = 2**31-1
|
|
|
|
|
|
D4 = METADATA["quarterNoteInTicks"]
|
|
D8 = int(D4 / 2)
|
|
D16 = int(D8 / 2)
|
|
D32 = int(D16 / 2)
|
|
D64 = int(D32 / 2)
|
|
D128 = int(D64 / 2)
|
|
D256 = int(D128 / 2)
|
|
D512 = int(D256 / 2)
|
|
D1024 = int(D512 / 2) # set this to a number with many factors, like 210. According to http://homes.sice.indiana.edu/donbyrd/CMNExtremes.htm this is the real world limit.
|
|
|
|
if not int(D1024) == D1024:
|
|
logger.error:(f"Warning: Lowest duration D0124 has decimal places: {D0124} but should be a plain integer. Your D4 value: {D4} has not enough 2^n factors. ")
|
|
|
|
D2 = D4 *2
|
|
D1 = D2 *2
|
|
DB = D1 * 2 #Breve
|
|
DL = DB * 2 #Longa
|
|
DM = DL * 2 #Maxima
|
|
|
|
|
|
if not int(D128) == D128:
|
|
raise ValueError(f"Durations must be integers (or .0). Yours: {D128}")
|
|
|
|
|
|
D_BASE_DURATIONS = (D1024, D512, D256, D64, D32, D16, D8, D4, D2, D1, DB, DL, DM)
|
|
|
|
#Duration Keywords
|
|
D_DEFAULT = 0
|
|
D_STACCATO = 1
|
|
D_TENUTO = 2
|
|
D_TIE = 3
|
|
|
|
def _baseDurationToTraditionalNumber(baseDuration):
|
|
"""4 = Quarter, 8 = Eighth, 0 = Brevis, -1= Longa
|
|
Created in the loop below on startup"""
|
|
if baseDuration == D4:
|
|
return 4
|
|
elif baseDuration == D8:
|
|
return 8
|
|
elif baseDuration == D16:
|
|
return 16
|
|
elif baseDuration == D2:
|
|
return 2
|
|
|
|
elif baseDuration == D1:
|
|
return 1
|
|
elif baseDuration == DB:
|
|
return 0
|
|
elif baseDuration == DL:
|
|
return -1
|
|
elif baseDuration == DM:
|
|
return -2
|
|
|
|
elif baseDuration == D32:
|
|
return 32
|
|
elif baseDuration == D64:
|
|
return 64
|
|
elif baseDuration == D128:
|
|
return 128
|
|
elif baseDuration == D256:
|
|
return 256
|
|
elif baseDuration == D512:
|
|
return 512
|
|
elif baseDuration == D1024:
|
|
return 1024
|
|
|
|
elif baseDuration == 0: #for KeySignatures and chords on init etc.
|
|
return 0
|
|
else:
|
|
raise ValueError("baseDuration does not match any traditioanl note duration value")
|
|
|
|
baseDurations = (0, D1024, D512, D256, D128, D64, D32, D16, D8, D4, D2, D1, DB, DL, DM) #from constants.py
|
|
|
|
baseDurationToTraditionalNumber = {}
|
|
for baseDuration in baseDurations:
|
|
baseDurationToTraditionalNumber[baseDuration] = _baseDurationToTraditionalNumber(baseDuration)
|
|
|
|
|
|
traditionalNumberToBaseDuration = {}
|
|
for baseDuration in baseDurations:
|
|
traditionalNumberToBaseDuration[_baseDurationToTraditionalNumber(baseDuration)] = baseDuration
|
|
|
|
def jackBBTicksToDuration(beatTypeAsTraditionalNumber, jackTicks, jackBeatTicks):
|
|
if None in (beatTypeAsTraditionalNumber, jackTicks, jackBeatTicks):
|
|
return None
|
|
else:
|
|
beatTypeDuration = traditionalNumberToBaseDuration[beatTypeAsTraditionalNumber]
|
|
#print (beatTypeAsTraditionalNumber, beatTypeDuration, jackTicks, jackBeatTicks)
|
|
factor = beatTypeDuration / jackBeatTicks
|
|
return jackTicks * factor
|
|
|