56 lines
1.3 KiB
Python
56 lines
1.3 KiB
Python
import os
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from whipper.common import common
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from whipper.common import task as ctask
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import logging
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logger = logging.getLogger(__name__)
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SOXI = 'soxi'
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class AudioLengthTask(ctask.PopenTask):
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"""
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Calculate the length of a track in audio samples.
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:cvar length: length of the decoded audio file, in audio samples
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:vartype length: int
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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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Init AudioLengthTask.
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:param path: path to audio track
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:type path: str
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"""
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assert isinstance(path, str), "%r is not str" % path
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self.logName = os.path.basename(path)
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self.command = [SOXI, '-s', 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('soxi')
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def readbytesout(self, bytes_stdout):
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self._output.append(bytes_stdout)
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def readbyteserr(self, bytes_stderr):
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self._error.append(bytes_stderr)
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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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logger.warning("soxi reported on stderr: %s", "".join(self._error))
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self.length = int("".join(o.decode() for o in self._output))
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