95 lines
2.9 KiB
Python
95 lines
2.9 KiB
Python
#!/usr/bin/python3
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###
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#
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# midi2beep.py
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# Author: Adrien MALINGREY <adrien@malingrey.fr>
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#
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# Play MIDI files with PC speaker using the beep command.
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#
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# Usage: python3 midi2beep.py <midi file>
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#
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# Dependencies:
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# - Python 3
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# - mido library (https://mido.readthedocs.io/)
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# - beep command
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#
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###
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import sys
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import subprocess
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import math
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import mido
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if len(sys.argv) < 2:
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print("Usage: python3 midi2beep.py <midi file> [channel]")
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sys.exit(1)
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arpege = 0.015#ms
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FREQUENCIES = [
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# C, C#, D, D#, E, F, F#, G, G#, A, A#, B
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16.35, 17.32, 18.35, 19.45, 20.6, 21.83, 23.12, 24.5, 25.96, 27.5, 29.14, 30.87,
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32.7, 34.65, 36.71, 38.89, 41.2, 43.65, 46.25, 49, 51.91, 55, 58.27, 61.74,
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65.41, 69.3, 73.42, 77.78, 82.41, 87.31, 92.5, 98, 103.83, 110, 116.54, 123.47,
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130.81, 138.59, 146.83, 155.56, 164.81, 174.61, 185, 196, 207.65, 220, 233.08, 246.94,
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261.63, 277.18, 293.66, 311.13, 329.63, 349.23, 369.99, 392, 415.3, 440, 466.16, 493.88,
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523.25, 554.37, 587.33, 622.25, 659.26, 698.46, 739.99, 783.99, 830.61, 880, 932.33, 987.77,
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1046.5, 1108.73, 1174.66, 1244.51, 1318.51, 1396.91, 1479.98, 1567.98, 1661.22, 1760, 1864.66, 1975.53,
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2093, 2217.46, 2349.32, 2489.02, 2637.02, 2793.83, 2959.96, 3135.96, 3322.44, 3520, 3729.31, 3951.07,
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4186.01, 4434.92, 4698.64, 4978.03, 5274.04, 5587.65, 5919.91, 6271.93, 6644.88, 7040, 7458.62, 7902.13,
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]
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midi_file_path = sys.argv[1]
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try:
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mid=mido.MidiFile(midi_file_path)
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except TypeError:
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mido.read_syx_file(midi_file_path)
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if len(sys.argv) > 2:
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channel = int(sys.argv[2])
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else:
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channel = -1
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time = 0
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note_on = 0
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start = 0
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tempo = 0
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try:
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for msg in mid:
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time += msg.time
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if msg.type == "track_name":
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print(msg.name)
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if msg.type == "set_tempo":
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tempo = msg.tempo
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if (msg.type == "note_on" or msg.type == "note_off") and (msg.channel == channel or (channel == -1 and msg.channel != 9)):
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if msg.time:
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lines = math.ceil(4e6 * (time - start) / tempo)
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if note_on:
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for _ in range(lines):
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print(note_on * " " + "█")
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subprocess.run(["beep", f"-f{FREQUENCIES[note_on]:.0f}", f"-l{1000*(time - start):.0f}"])
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elif start:
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for _ in range(lines):
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print()
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subprocess.run(["sleep", f"{0.8*(time - start)}"])
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if msg.type == "note_on" and msg.velocity:
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if msg.time or msg.note > note_on:
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note_on = msg.note
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else:
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note_on = 0
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start = time
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lines = math.ceil(4e6 * (time - start) / tempo)
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for _ in range(lines):
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print(note_on * " " + "█")
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subprocess.run(["beep", f"-f{FREQUENCIES[note_on]:.0f}", f"-l{1000*(time - start):.0f}"])
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except KeyboardInterrupt:
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subprocess.run(["beep", "-f1", "-l1"])
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