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EillesWan
parent
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commit
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3
.gitignore
vendored
3
.gitignore
vendored
@ -1,6 +1,7 @@
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# mystuff
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/.vscode
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*.mid
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*.midi
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# Byte-compiled / optimized / DLL files
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__pycache__/
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22
example_convert_linear_mcpack.py
Normal file
22
example_convert_linear_mcpack.py
Normal file
@ -0,0 +1,22 @@
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# THIS PROGRAM IS ONLY A TEST EXAMPLE
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from msctPkgver.main import *
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convertion = midiConvert()
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convertion.convert(input('请输入midi文件路径：'), input('请输入输出路径：'))
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convertion.tomcpack(
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1,
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bool(int(input('是否自动重置计分板(1|0)：'))),
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bool(int(input('是否开启进度条(1|0)：'))),
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input('请输入计分板名称：'),
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float(input('请输入音量（0-1）：')),
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float(input('请输入速度倍率：')),
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)
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# for the test
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# if __name__ == '__main__':
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# convertion = midiConvert()
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# convertion.convert(r"C:\Users\lc\Documents\MuseScore3\乐谱\乐谱\victory.mid", ".")
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# convertion.tomcpack(
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# 1, True, True, "scb", 1, 1)
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@ -62,8 +62,10 @@ class MidiDestroyedError(MSCTBaseException):
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pass
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class ChannelOverFlowError(MSCTBaseException):
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'''一个midi中含有过多的通道（应≤16）'''
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'''一个midi中含有过多的通道（数量应≤16）'''
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pass
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class NotDefineProgramError(MSCTBaseException):
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'''没有Program设定导致没有乐器可以选择的错误'''
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pass
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@ -63,10 +63,87 @@ def makeZip(sourceDir, outFilename, compression=8, exceptFile=None):
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zipf.close()
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class SingleNote:
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def __init__(self, inst: int, pitch: int, velocity, startTime, lastTime):
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'''用于存储单个音符的类
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:param inst 乐器编号
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:param pitch 音符编号
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:param velocity 力度/响度
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:param startTime 开始之时(ms)
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注：此处的时间是用从乐曲开始到当前的毫秒数
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:param lastTime 音符延续时间(ms)'''
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self.inst = inst
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self.note = pitch
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self.velocity = velocity
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self.startTime = startTime
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self.lastTime = lastTime
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@property
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def inst(self):
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return self.inst
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@property
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def note(self):
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return self.note
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@property
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def velocity(self):
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return self.velocity
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@property
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def startTime(self):
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return self.startTime
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@property
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def lastTime(self):
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return self.lastTime
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def __str__(self):
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return f"Note(inst = {self.inst}, pitch = {self.note}, velocity = {self.velocity}, startTime = {self.startTime}, lastTime = {self.lastTime}, )"
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def __tuple__(self):
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return (self.inst, self.note, self.velocity, self.startTime, self.lastTime)
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def __dict__(self):
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return {
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"inst": self.inst,
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"pitch": self.note,
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"velocity": self.velocity,
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"startTime": self.startTime,
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"lastTime": self.lastTime,
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}
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'''
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学习笔记：
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tempo: microseconds per quarter note 毫秒每四分音符，换句话说就是一拍占多少毫秒
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tick: midi帧
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ticks_per_beat: 帧每拍，即一拍多少帧
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那么：
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tick / ticks_per_beat => amount_of_beats 拍数(四分音符数)
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tempo * amount_of_beats => 毫秒数
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所以：
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tempo * tick / ticks_per_beat => 毫秒数
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'''
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class midiConvert:
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def __init__(self, debug: bool = False):
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"""简单的midi转换类，将midi文件转换为我的世界结构或者包"""
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self.debugMode = debug
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self.methods = [
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self._toCmdList_m1,
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self._toCmdList_m2,
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self._toCmdList_m3,
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]
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self.methods_byDelay = [
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self._toCmdList_withDelay_m1,
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]
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def convert(self, midiFile: str, outputPath: str):
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"""转换前需要先运行此函数来获取基本信息"""
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@ -446,7 +523,7 @@ class midiConvert:
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/ ((self.midi.ticks_per_beat * float(speed)) * 50000)
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)
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except NameError:
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raise NotDefineTempoError('计算当前分数时出错 未定义参量')
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raise NotDefineTempoError('计算当前分数时出错 未定义参量 Tempo')
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maxscore = max(maxscore, nowscore)
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soundID, _X = self.__Inst2soundIDwithX(instrumentID)
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singleTrack.append(
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@ -463,68 +540,302 @@ class midiConvert:
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return [tracks, commands, maxscore]
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# 值得注意的是，我这里没有修改多少
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# 这与上面的算法几乎没有差别 甚至更慢了一点 但是是为了线性插值做准备
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def _toCmdList_m2(
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self, scoreboardname: str = "mscplay", MaxVolume: float = 1.0, speed: float = 1.0
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self,
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scoreboardname: str = "mscplay",
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MaxVolume: float = 1.0,
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speed: float = 1.0,
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) -> list:
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"""
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使用金羿的转换思路，将midi转换为我的世界命令列表，使用线性方法调整音量
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使用金羿的转换思路，将midi转换为我的世界命令列表
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:param scoreboardname: 我的世界的计分板名称
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:param volume: 音量，注意：这里的音量范围为(0,1]，如果超出将被处理为正确值，其原理为在距离玩家 (1 / volume -1) 的地方播放音频
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:param MaxVolume: 音量，注意：这里的音量范围为(0,1]，如果超出将被处理为正确值，其原理为在距离玩家 (1 / volume -1) 的地方播放音频
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:param speed: 速度，注意：这里的速度指的是播放倍率，其原理为在播放音频的时候，每个音符的播放时间除以 speed
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:return: tuple(命令列表, 命令个数, 计分板最大值)
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"""
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tracks = []
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if MaxVolume > 1:
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MaxVolume = 1
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if MaxVolume <= 0:
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MaxVolume = 0.001
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commands = 0
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maxscore = 0
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# 一个midi中仅有16通道 我们通过通道来识别而不是音轨
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channels = [[], [], [], [], [], [], [], [], [], [], [], [], [], [], [], []]
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# 我们来用通道统计音乐信息
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for i, track in enumerate(self.midi.tracks):
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microseconds = 0
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for msg in track:
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if msg.time != 0:
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try:
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microseconds += msg.time * tempo / self.midi.ticks_per_beat
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except NameError:
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raise NotDefineTempoError('计算当前分数时出错 未定义参量 Tempo')
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if msg.is_meta:
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if msg.type == "set_tempo":
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tempo = msg.tempo
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else:
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try:
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msg.channel
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channelMsg = True
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except:
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channelMsg = False
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if channelMsg:
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if msg.channel > 15:
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raise ChannelOverFlowError(f"当前消息 {msg} 的通道超限(≤15)")
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if msg.type == "program_change":
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channels[msg.channel].append(
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("PgmC", msg.program, microseconds)
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)
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elif msg.type == 'note_on' and msg.velocity != 0:
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channels[msg.channel].append(
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("NoteS", msg.note, msg.velocity, microseconds)
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)
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elif (msg.type == 'note_on' and msg.velocity == 0) or (
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msg.type == 'note_off'
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):
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channels[msg.channel].append(
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("NoteE", msg.note, microseconds)
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)
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'''整合后的音乐通道格式
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每个通道包括若干消息元素其中逃不过这三种：
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1 切换乐器消息
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("PgmC", 切换后的乐器ID: int, 距离演奏开始的毫秒)
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2 音符开始消息
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("NoteS", 开始的音符ID, 力度（响度）, 距离演奏开始的毫秒)
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3 音符结束消息
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("NoteS", 结束的音符ID, 距离演奏开始的毫秒)'''
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tracks = []
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cmdAmount = 0
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maxScore = 0
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CheckFirstChannel = False
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# 此处 我们把通道视为音轨
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for track in channels:
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# 如果当前通道为空 则跳过
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if not track:
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continue
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if channels.index(track) == 0:
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CheckFirstChannel = True
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else:
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CheckFirstChannel = False
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nowTrack = []
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for msg in track:
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if msg[0] == "PgmC":
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InstID = msg[1]
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elif msg[0] == "NoteS":
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soundID, _X = self.__Inst2soundIDwithX(InstID)
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score_now = round(msg[-1]/ float(speed) / 50000)
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maxScore = max(maxScore,score_now)
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nowTrack.append(
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"execute @a[scores={"
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+ str(scoreboardname)
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+ "="
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+ str(score_now)
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+ "}"
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+ f"] ~ ~ ~ playsound {soundID} @s ~ ~{1 / MaxVolume - 1} ~ {msg[2] * (0.7 if CheckFirstChannel else 0.9)} {2 ** ((msg[1] - 60 - _X) / 12)}"
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)
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cmdAmount += 1
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tracks.append(nowTrack)
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return [tracks, cmdAmount, maxScore]
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# 这才是加了线性插值的算法
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def _toCmdList_m3(
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self,
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scoreboardname: str = "mscplay",
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MaxVolume: float = 1.0,
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speed: float = 1.0,
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) -> list:
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"""
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使用金羿的转换思路，将midi转换为我的世界命令列表，并使用线性插值算法优化音量，此处的插值是固定斜率的方法
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:param scoreboardname: 我的世界的计分板名称
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:param MaxVolume: 音量，注意：这里的音量范围为(0,1]，如果超出将被处理为正确值，其原理为在距离玩家 (1 / volume -1) 的地方播放音频
|
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:param speed: 速度，注意：这里的速度指的是播放倍率，其原理为在播放音频的时候，每个音符的播放时间除以 speed
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:return: tuple(命令列表, 命令个数, 计分板最大值)
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"""
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if MaxVolume > 1:
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MaxVolume = 1
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if MaxVolume <= 0:
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MaxVolume = 0.001
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# 一个midi中仅有16通道 我们通过通道来识别而不是音轨
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channels = [[], [], [], [], [], [], [], [], [], [], [], [], [], [], [], []]
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# 我们来用通道统计音乐信息
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for i, track in enumerate(self.midi.tracks):
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ticks = 0
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instrumentID = 0
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singleTrack = []
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noteOn = []
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microseconds = 0
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for msg in track:
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ticks += msg.time
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# print(msg)
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if msg.time != 0:
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try:
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microseconds += msg.time * tempo / self.midi.ticks_per_beat
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except NameError:
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raise NotDefineTempoError('计算当前分数时出错 未定义参量 Tempo')
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if msg.is_meta:
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if msg.type == "set_tempo":
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tempo = msg.tempo
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else:
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if msg.type == "program_change":
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# print("TT")
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instrumentID = msg.program
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if msg.type == 'note_on' and msg.velocity != 0:
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nowscore = round(
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(ticks * tempo)
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/ ((self.midi.ticks_per_beat * float(speed)) * 50000)
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try:
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msg.channel
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channelMsg = True
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except:
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channelMsg = False
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if channelMsg:
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if msg.channel > 15:
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raise ChannelOverFlowError(f"当前消息 {msg} 的通道超限(≤15)")
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if msg.type == "program_change":
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channels[msg.channel].append(
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("PgmC", msg.program, microseconds)
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)
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maxscore = max(maxscore, nowscore)
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soundID, _X = self.__Inst2soundIDwithX(instrumentID)
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singleTrack.append(
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elif msg.type == 'note_on' and msg.velocity != 0:
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channels[msg.channel].append(
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("NoteS", msg.note, msg.velocity, microseconds)
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)
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elif (msg.type == 'note_on' and msg.velocity == 0) or (
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msg.type == 'note_off'
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):
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channels[msg.channel].append(
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("NoteE", msg.note, microseconds)
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)
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'''整合后的音乐通道格式
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每个通道包括若干消息元素其中逃不过这三种：
|
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|
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1 切换乐器消息
|
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|
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("PgmC", 切换后的乐器ID: int, 距离演奏开始的毫秒)
|
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|
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2 音符开始消息
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("NoteS", 开始的音符ID, 力度（响度）, 距离演奏开始的毫秒)
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3 音符结束消息
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("NoteS", 结束的音符ID, 距离演奏开始的毫秒)'''
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note_channels = [[], [], [], [], [], [], [], [], [], [], [], [], [], [], [], []]
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# 此处 我们把通道视为音轨
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for i in range(len(channels)):
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# 如果当前通道为空 则跳过
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noteMsgs = []
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for msg in channels[i]:
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if msg[0] == "PgmC":
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InstID = msg[1]
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elif msg[0] == "NoteS":
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noteMsgs.append(msg[1:])
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elif msg[0] == "NoteE":
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record_pop_ids = []
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for j in range(len(noteMsgs)):
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if noteMsgs[j][0] == msg[1]:
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note_channels[i].append(SingleNote(InstID, msg[1],noteMsgs[j][1],noteMsgs[j][2],msg[-1]-noteMsgs[j][2]))
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record_pop_ids.append(j)
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for j in record_pop_ids:
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noteMsgs.pop(j)
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tracks = []
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cmdAmount = 0
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maxScore = 0
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CheckFirstChannel = False
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# 此处 我们把通道视为音轨
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for track in note_channels:
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# 如果当前通道为空 则跳过
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if not track:
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continue
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if channels.index(track) == 0:
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CheckFirstChannel = True
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else:
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CheckFirstChannel = False
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nowTrack = []
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for note in track:
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for i in range(note.lastTime / 500):
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# 实在没时间写了
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# 用半秒做一个时间单位
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# 然后计算即可
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# 我找时间写完
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soundID, _X = self.__Inst2soundIDwithX(InstID)
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score_now = round(msg[-1]/ float(speed) / 50000)
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maxScore = max(maxScore,score_now)
|
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|
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nowTrack.append(
|
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"execute @a[scores={"
|
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+ str(scoreboardname)
|
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+ "="
|
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+ str(nowscore)
|
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+ str(score_now)
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+ "}"
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+ f"] ~ ~ ~ playsound {soundID} @s ~ ~{1 / MaxVolume - 1} ~ {msg.velocity * (0.7 if msg.channel == 0 else 0.9)} {2 ** ((msg.note - 60 - _X) / 12)}"
|
||||
+ f"] ~ ~ ~ playsound {soundID} @s ~ ~{1 / MaxVolume - 1} ~ {msg[2] * (0.7 if CheckFirstChannel else 0.9)} {2 ** ((msg[1] - 60 - _X) / 12)}"
|
||||
)
|
||||
commands += 1
|
||||
if len(singleTrack) != 0:
|
||||
tracks.append(singleTrack)
|
||||
|
||||
return [tracks, commands, maxscore]
|
||||
cmdAmount += 1
|
||||
|
||||
tracks.append(nowTrack)
|
||||
|
||||
|
||||
return [tracks, cmdAmount, maxScore]
|
||||
|
||||
|
||||
return [tracks, cmdAmount, maxScore]
|
||||
|
||||
|
||||
|
||||
def _toCmdList_withDelay_m1(
|
||||
self,
|
||||
@ -722,9 +1033,9 @@ class midiConvert:
|
||||
:param speed: 速度，注意：这里的速度指的是播放倍率，其原理为在播放音频的时候，每个音符的播放时间除以 speed
|
||||
:return 成功与否，成功返回(True,True)，失败返回(False,str失败原因)
|
||||
"""
|
||||
if method == 1:
|
||||
cmdlist, _a, maxscore = self._toCmdList_m1(scoreboardname, volume, speed)
|
||||
else:
|
||||
try:
|
||||
cmdlist, _a, maxscore = self.methods[method-1](scoreboardname, volume, speed)
|
||||
except:
|
||||
return (False, f"无法找到算法ID{method}对应的转换算法")
|
||||
del _a
|
||||
|
||||
@ -858,14 +1169,13 @@ class midiConvert:
|
||||
:param isAutoReset: 是否自动重置计分板
|
||||
:return 成功与否，成功返回(True,未经过压缩的源,结构占用大小)，失败返回(False,str失败原因)
|
||||
"""
|
||||
|
||||
if method == 1:
|
||||
cmdlist, totalcount, maxScore = self._toCmdList_m1(
|
||||
scoreboardname, volume, speed
|
||||
)
|
||||
else:
|
||||
try:
|
||||
cmdlist, totalcount, maxScore = self.methods[method-1](scoreboardname, volume, speed)
|
||||
except:
|
||||
return (False, f"无法找到算法ID{method}对应的转换算法")
|
||||
|
||||
|
||||
|
||||
if not os.path.exists(self.outputPath):
|
||||
os.makedirs(self.outputPath)
|
||||
|
||||
@ -995,9 +1305,9 @@ class midiConvert:
|
||||
:return 成功与否，成功返回(True,未经过压缩的源,结构占用大小)，失败返回(False,str失败原因)
|
||||
"""
|
||||
|
||||
if method == 1:
|
||||
cmdlist = self._toCmdList_withDelay_m1(volume, speed, player, progressbar)
|
||||
else:
|
||||
try:
|
||||
cmdlist = self.methods_byDelay[method-1](volume, speed, player, progressbar)
|
||||
except:
|
||||
return (False, f"无法找到算法ID{method}对应的转换算法")
|
||||
|
||||
if not os.path.exists(self.outputPath):
|
||||
|
||||
Loading…
Reference in New Issue
Block a user