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49 lines
2.0 KiB
Python
Executable File
49 lines
2.0 KiB
Python
Executable File
import subprocess
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import traceback
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import uuid
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import os
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from dss import settings
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def generate_waveform(input_file, output_file):
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working_file = "%s%s.png" % (settings.DSS_TEMP_PATH, uuid.uuid1())
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try:
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print "Starting decode : %s\n\tIn: %s\n\tOut: %s" % \
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(settings.DSS_LAME_PATH, input_file, working_file)
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#sox f679a81a-ea14-4385-a677-c663559d1e4b.mp3 -c 1 -t wav -
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#| /srv/dss/bin/wav2png -w 800 -h 120 -o song.png /dev/stdin
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convert_command = "%s %s -c 1 -t wav -" % (settings.DSS_LAME_PATH, input_file)
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print "Convert command: %s" % convert_command
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command_split = convert_command.split()
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convert = subprocess.Popen(command_split,
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stdout=subprocess.PIPE)
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waveform_command = "%s -w 800 -h 120 -o %s" % (settings.DSS_WAVE_PATH, working_file)
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waveform = subprocess.Popen(waveform_command,
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stdin=convert.stdout, stdout=subprocess.PIPE)
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convert.stdout.close()
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output = waveform.communicate()[0]
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print "Finished decode\n%s" % output
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if os.path.exists(working_file):
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print "Starting waveform generation"
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ret = subprocess.call([
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settings.DSS_WAVE_PATH, "-w", "800", "-h", "120", "-o",
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output_file,
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working_file], stderr=subprocess.PIPE, stdout=subprocess.PIPE)
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if os.path.isfile(output_file):
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os.remove(working_file)
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print "Generated waveform"
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return output_file
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else:
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print "Failed generating waveform: %s" % output_file
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print "Subprocess returned: %s" % ret
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else:
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print "Unable to find working file, did LAME succeed?"
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return ""
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except Exception, ex:
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print "Error generating waveform %s" % (ex)
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