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Updated audio converter to use sox

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Fergal Moran
2014-03-14 17:34:30 +00:00
parent 5ad348ef54
commit aabb7c9fb9
1 changed files with 8 additions and 28 deletions
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36
core/utils/waveform.py
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@@ -6,43 +6,23 @@ from dss import settings
def generate_waveform(input_file, output_file):
working_file = "%s%s.png" % (settings.DSS_TEMP_PATH, uuid.uuid1())
try:
print "Starting decode : %s\n\tIn: %s\n\tOut: %s" % \
(settings.DSS_LAME_PATH, input_file, working_file)
(settings.DSS_LAME_PATH, input_file, output_file)
#sox f679a81a-ea14-4385-a677-c663559d1e4b.mp3 -c 1 -t wav -
#| /srv/dss/bin/wav2png -w 800 -h 120 -o song.png /dev/stdin
convert_command = "%s %s -c 1 -t wav -" % (settings.DSS_LAME_PATH, input_file)
convert_command = "%s %s -c 1 -t wav - | %s -w 800 -h 120 -o %s /dev/stdin" % \
(settings.DSS_LAME_PATH, input_file, settings.DSS_WAVE_PATH, output_file)
print "Convert command: %s" % convert_command
command_split = convert_command.split()
convert = subprocess.Popen(command_split,
stdout=subprocess.PIPE)
result = os.system(convert_command)
print result
waveform_command = "%s -w 800 -h 120 -o %s" % (settings.DSS_WAVE_PATH, working_file)
waveform = subprocess.Popen(waveform_command,
stdin=convert.stdout, stdout=subprocess.PIPE)
convert.stdout.close()
output = waveform.communicate()[0]
print "Finished decode\n%s" % output
if os.path.exists(working_file):
print "Starting waveform generation"
ret = subprocess.call([
settings.DSS_WAVE_PATH, "-w", "800", "-h", "120", "-o",
output_file,
working_file], stderr=subprocess.PIPE, stdout=subprocess.PIPE)
if os.path.isfile(output_file):
os.remove(working_file)
print "Generated waveform"
return output_file
else:
print "Failed generating waveform: %s" % output_file
print "Subprocess returned: %s" % ret
if os.path.exists(output_file):
return output_file
else:
print "Unable to find working file, did LAME succeed?"
return ""
except Exception, ex:
print "Error generating waveform %s" % (ex)