48 lines
1.2 KiB
Python
48 lines
1.2 KiB
Python
import os
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from morituri.common import log, common
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from morituri.common import task as ctask
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SOXI = 'soxi'
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class AudioLengthTask(ctask.PopenTask, log.Loggable):
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"""
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I calculate the length of a track in audio samples.
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@ivar length: length of the decoded audio file, in audio samples.
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"""
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logCategory = 'AudioLengthTask'
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description = 'Getting length of audio track'
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length = None
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def __init__(self, path):
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"""
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@type path: unicode
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"""
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assert type(path) is unicode, "%r is not unicode" % path
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self._path = path
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self.logName = os.path.basename(path).encode('utf-8')
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self.command = [SOXI, '-s', self._path]
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self._error = []
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self._output = []
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def commandMissing(self):
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raise common.MissingDependencyException('sox')
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def readbytesout(self, bytes):
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self._output.append(bytes)
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def readbyteserr(self, bytes):
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self._error.append(bytes)
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def failed(self):
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self.setException(Exception("soxi failed: %s"%"".join(self._error)))
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def done(self):
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if self._error:
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self.warning("soxi reported on stderr: %s", "".join(self._error))
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self.length = int("".join(self._output))
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