25 lines
779 B
Python
25 lines
779 B
Python
"""Generates coeffs.bin file from one of the three coefficient files that come with libsamplerate."""
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from re import search, findall
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import struct
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from array import array
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# 'fastest_coeffs.h', 'mid_qual_coeffs.h', or 'high_qual_coeffs.h'
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input_file_name = 'mid_qual_coeffs.h'
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coeffs = None
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with open(input_file_name, 'r') as input_file:
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content = input_file.read()
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# Read increment
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increment = int(search(r"=\s*\{\s*(\d+)", content).group(1))
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# Read coefficients
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coeffs = [float(coeffString) for coeffString in findall(r"-?\d+\.\d+e[-+]\d+", content)]
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# ...add a final zero coefficient
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coeffs.append(0.0)
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with open('coeffs.bin', 'wb') as output_file:
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output_file.write(struct.pack('i', increment))
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array('f', coeffs).tofile(output_file)
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