Musicreater/bgArrayLib/reader.py
2022-02-01 21:35:46 +08:00

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# -*- coding: utf-8 -*-
from nmcsup.log import log
import pickle
class Note:
def __init__(self, channel, pitch, velocity, time, time_position, instrument):
self.channel = channel
self.pitch = pitch
self.velocity = velocity
self.delay = time
self.time_position = time_position
self.instrument = instrument
self.CD = "d"
def get_CD(self, start, end):
if end - start > 1.00:
self.CD = "c"
else:
self.CD = "d"
def midiNewReader(midfile: str):
import mido
# from msctspt.threadOpera import NewThread
from bgArrayLib.bpm import get
def Time(mt, tpb_a, bpm_a):
return round(mt / tpb_a / bpm_a * 60 * 20)
Notes = []
tracks = []
note_list = []
close = []
on = []
off = []
instruments = []
isPercussion = False
try:
mid = mido.MidiFile(midfile)
except Exception:
log("找不到文件或无法读取文件" + midfile)
return False
tpb = mid.ticks_per_beat
bpm = get(mid)
# 解析
# def loadMidi(track1):
for track in mid.tracks:
overallTime = 0.0
instrument = 0
for i in track:
overallTime += i.time
try:
if i.channel != 9:
# try:
# log("event_type(事件): " + str(i.type) + " channel(音轨): " + str(i.channel) +
# " note/pitch(音高): " +
# str(i[2]) +
# " velocity(力度): " + str(i.velocity) + " time(间隔时间): " + str(i.time) +
# " overallTime/globalTime/timePosition: " + str(overallTime) + " \n")
# except AttributeError:
# log("event_type(事件): " + str(i.type) + " thing(内容)" + str(i) + " \n")
if 'program_change' in str(i):
instrument = i.program
if instrument > 119: # 音色不够
pass
else:
instruments.append(i.program)
if 'note_on' in str(i) and i.velocity > 0:
print(i)
# print(i.note)
# print([Note(i.channel, i.note, i.velocity, i.time, Time(overallTime, tpb, bpm), instrument)])
tracks.append(
[Note(i.channel, i.note, i.velocity, i.time, Time(overallTime, tpb, bpm), instrument)])
note_list.append(
[i.channel, i.note, i.velocity, i.time, Time(overallTime, tpb, bpm), instrument])
on.append([i.note, Time(overallTime, tpb, bpm)])
# return [Note(i.channel, i, i.velocity, i.time, Time(overallTime, tpb, bpm))]
if 'note_off' in str(i) or 'note_on' in str(i) and i.velocity == 0:
# print(i)
# print([Note(i.channel, i.note, i.velocity, i.time, Time(overallTime, tpb, bpm))])
close.append(
[Note(i.channel, i.note, i.velocity, i.time, Time(overallTime, tpb, bpm), instrument)])
off.append([i.note, Time(overallTime, tpb, bpm)])
# return [Note(i.channel, i, i.velocity, i.time, Time(overallTime, tpb, bpm))]
except AttributeError:
pass
if 'note_on' in str(i) and i.channel == 9:
if 'note_on' in str(i) and i.velocity > 0:
print(i)
# print(i.note)
# print([Note(i.channel, i.note, i.velocity, i.time, Time(overallTime, tpb, bpm), -1)])
tracks.append([Note(i.channel, i.note, i.velocity, i.time, Time(overallTime, tpb, bpm), -1)])
note_list.append([i.channel, i.note, i.velocity, i.time, Time(overallTime, tpb, bpm), -1])
on.append([i.note, Time(overallTime, tpb, bpm)])
isPercussion = True
# return [Note(i.channel, i, i.velocity, i.time, Time(overallTime, tpb, bpm))]
Notes.append(tracks)
if instruments is []:
instruments.append(0)
instruments = list(set(instruments))
with open("1.pkl", 'wb') as b:
pickle.dump([instruments, isPercussion], b)
# for j, track in enumerate(mid.tracks):
# th = NewThread(loadMidi, (track,))
# th.start()
# Notes.append(th.getResult())
# print(Notes)
print(Notes.__len__())
# print(note_list)
print(instruments)
return Notes
# return [Notes, note_list]
def midiClassReader(midfile: str):
import mido
from bgArrayLib.bpm import get
def Time(mt, tpb_a, bpm_a):
return round(mt / tpb_a / bpm_a * 60 * 20)
Notes = []
tracks = []
try:
mid = mido.MidiFile(filename=midfile,clip=True)
except Exception:
log("找不到文件或无法读取文件" + midfile)
return False
log("midi已经载入了。")
tpb = mid.ticks_per_beat
bpm = get(mid)
for track in mid.tracks:
overallTime = 0.0
instrument = 0
for i in track:
overallTime += i.time
if 'note_on' in str(i) and i.velocity > 0:
print(i)
tracks.append(
[Note(i.channel, i.note, i.velocity, i.time, Time(overallTime, tpb, bpm), instrument)])
Notes.append(tracks)
print(Notes.__len__())
return Notes