33 lines
1.2 KiB
Python
33 lines
1.2 KiB
Python
__author__ = 'asantoni'
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import subprocess
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import logging
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from analyzer import Analyzer
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class UnplayableFileError(Exception):
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pass
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class PlayabilityAnalyzer(Analyzer):
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''' This class checks if a file can actually be played with Liquidsoap. '''
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LIQUIDSOAP_EXECUTABLE = 'liquidsoap'
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@staticmethod
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def analyze(filename, metadata):
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''' Checks if a file can be played by Liquidsoap.
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:param filename: The full path to the file to analyzer
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:param metadata: A metadata dictionary where the results will be put
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:return: The metadata dictionary
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'''
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command = [PlayabilityAnalyzer.LIQUIDSOAP_EXECUTABLE, '-v', '-c', "output.dummy(audio_to_stereo(single(argv(1))))", '--', filename]
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try:
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subprocess.check_output(command, stderr=subprocess.STDOUT, close_fds=True)
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except OSError as e: # liquidsoap was not found
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logging.warn("Failed to run: %s - %s. %s" % (command[0], e.strerror, "Do you have liquidsoap installed?"))
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except (subprocess.CalledProcessError, Exception) as e: # liquidsoap returned an error code
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logging.warn(e)
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raise UnplayableFileError()
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return metadata
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