51 lines
1.2 KiB
Python
51 lines
1.2 KiB
Python
import logging
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from subprocess import Popen, PIPE
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from os.path import exists
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ARB = 'accuraterip-checksum'
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FLAC = 'flac'
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def accuraterip_checksum(f, track, tracks, wave=False, v2=False):
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v = '--accuraterip-v1'
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if v2:
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v = '--accuraterip-v2'
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track, tracks = str(track), str(tracks)
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if not wave:
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flac = Popen([FLAC, '-cds', f], stdout=PIPE)
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arc = Popen([ARB, v, '/dev/stdin', track, tracks],
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stdin=flac.stdout, stdout=PIPE, stderr=PIPE)
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else:
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arc = Popen([ARB, v, f, track, tracks],
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stdout=PIPE, stderr=PIPE)
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if not wave:
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flac.stdout.close()
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out, err = arc.communicate()
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if not wave:
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flac.wait()
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flac_rc = flac.returncode
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arc_rc = arc.returncode
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if not wave and flac_rc != 0:
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logging.warning('ARC calculation failed: flac return code is non zero')
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return None
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if arc_rc != 0:
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logging.warning('ARC calculation failed: arc return code is non zero')
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return None
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out = out.strip()
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try:
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outh = int('0x%s' % out, base=16)
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except ValueError:
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logging.warning('ARC output is not usable')
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return None
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return outh
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