b2ca3167eb
* update README to force python2 * add support for PRE_EMPHASIS detection; mark pre-emphasis as FLAGS PRE in .cue * correct typo, s/ivar/type/ for pre_emphasis element in track table * add SoxPeakTask, program/sox module, sox.peak_level() * use sox peak detection in lieu of gstreamer
17 lines
477 B
Python
17 lines
477 B
Python
import os
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import logging
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from subprocess import Popen, PIPE
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SOX = 'sox'
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def peak_level(track_path):
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if not os.path.exists(track_path):
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logging.warning("SoX peak detection failed: file not found")
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return None
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sox = Popen([SOX, track_path, "-n", "stat"], stderr=PIPE)
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out, err = sox.communicate()
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if sox.returncode:
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logging.warning("SoX peak detection failed: " + s.returncode)
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return None
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return float(err.split('\n')[3].split()[2]) # Maximum amplitude: 0.123456
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