62 lines
1.1 KiB
Python
Executable File
62 lines
1.1 KiB
Python
Executable File
#!/usr/bin/env python
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import os
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import sys
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import vamp
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import tempfile
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import numpy as np
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import subprocess as sp
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from copyparty.util import fsenc
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"""
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dep: vamp
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dep: beatroot-vamp
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dep: ffmpeg
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"""
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def det(tf):
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# fmt: off
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sp.check_call([
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"ffmpeg",
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"-nostdin",
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"-hide_banner",
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"-v", "fatal",
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"-ss", "13",
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"-y", "-i", fsenc(sys.argv[1]),
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"-ac", "1",
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"-ar", "22050",
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"-t", "300",
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"-f", "f32le",
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tf
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])
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# fmt: on
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with open(tf, "rb") as f:
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d = np.fromfile(f, dtype=np.float32)
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c = vamp.collect(d, 22050, "beatroot-vamp:beatroot")
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cl = c["list"]
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# throws if detection failed:
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bpm = float(cl[-1]["timestamp"] - cl[1]["timestamp"])
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bpm = round(60 * ((len(cl) - 1) / bpm), 2)
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print(f"{bpm:.2f}")
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def main():
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with tempfile.NamedTemporaryFile(suffix=".pcm", delete=False) as f:
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f.write(b"h")
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tf = f.name
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try:
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det(tf)
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except:
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pass
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finally:
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os.unlink(tf)
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if __name__ == "__main__":
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main()
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