mirror of
https://github.com/TriM-Organization/Musicreater.git
synced 2024-11-11 01:27:35 +08:00
58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
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import mido
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import numpy
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def mt2gt(mt, tpb_a, bpm_a):
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return round(mt / tpb_a / bpm_a * 60)
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def get(mf):
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mid = mido.MidiFile(mf)
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long = mid.length
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tpb = mid.ticks_per_beat
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bpm = 20
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gotV = 0
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for track in mid.tracks:
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global_time = 0
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for msg in track:
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global_time += msg.time
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if msg.type == "note_on" and msg.velocity > 0:
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gotV = mt2gt(global_time, tpb, bpm)
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errorV = numpy.fabs(gotV - long)
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last_dic = {bpm: errorV}
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if last_dic.get(bpm) > errorV:
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last_dic = {bpm: errorV}
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bpm += 2
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while True:
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for track in mid.tracks:
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global_time = 0
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for msg in track:
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global_time += msg.time
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if msg.type == "note_on" and msg.velocity > 0:
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gotV = mt2gt(global_time, tpb, bpm)
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errorV = numpy.fabs(gotV - long)
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try:
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if last_dic.get(bpm - 2) > errorV:
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last_dic = {bpm: errorV}
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except TypeError:
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pass
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bpm += 2
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if bpm >= 252:
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break
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print(list(last_dic.keys())[0])
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return list(last_dic.keys())[0]
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def compute(mf):
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mid = mido.MidiFile(mf)
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answer = 60000000/mid.ticks_per_beat
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print(answer)
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return answer
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if __name__ == '__main__':
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get(r"C:\Users\lc\Documents\MuseScore3\乐谱\乐谱\Bad style - Time back.mid")
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compute(r"C:\Users\lc\Documents\MuseScore3\乐谱\乐谱\Bad style - Time back.mid")
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