def transcode(self, dest_path, file_descr, asset_id, target_mimetype,
**options):
file_path = expand_path_template(target_mimetype.template,
target_mimetype.mimetype, asset_id,
**options)
audio_mimetype = mimetypes.guess_type(file_descr.file.filename)[0]
try:
tmp = tempfile.NamedTemporaryFile()
pro = subprocess.Popen([
"sox", file_descr.file.filename, "-t", "wav", "-r",
str(options['samplerate']), tmp.name
],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
out, err = pro.communicate()
if pro.returncode != 0:
print(
"Sox failed %s with error code %d!" %
(file_decrs.file.filename, pro.returncode), out, err)
return False
else:
toopen = tmp.name
except OSError:
print("Sox failed %s!" % (file_descr.file.filename), out, err)
return False
wavedata = WaveData()
wavedata.extractData(toopen, options['precision'])
channels = wavedata.getData()
if wavedata.nchannels == options['channels']:
if options['channels'] == 1:
transcoded = json.dumps({"mono": channels[0]})
elif options['channels'] == 2:
transcoded = json.dumps({
"left": channels[0],
"right": channels[1]
})
else:
if options['channels'] == 1:
transcoded = json.dumps({"mono": channels[0]})
else:
transcoded = json.dumps({
"left": channels[0],
"right": channels[0]
})
full_path = os.path.join(dest_path, file_path)
if not os.path.exists(os.path.dirname(full_path)):
os.makedirs(os.path.dirname(full_path))
output_file = open(full_path, 'w')
output_file.write(transcoded)
output_file.close()
return [file_path]
def transcode(self, dest_path, file_descr, asset_id, target_mimetype,
**options):
file_path = expand_path_template(target_mimetype.template,
target_mimetype.mimetype, asset_id,
**options)
audio_mimetype = mimetypes.guess_type(file_descr.file.filename)[0]
try:
tmp = tempfile.NamedTemporaryFile()
pro = subprocess.Popen([
"sox", file_descr.file.filename, "-t", "wav", "-r",
str(options['samplerate']), tmp.name
],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
out, err = pro.communicate()
if pro.returncode != 0:
print(
"Sox failed %s with error code %d!" %
(file_decrs.file.filename, pro.returncode), out, err)
return False
else:
toopen = tmp.name
except OSError:
print("Sox failed %s!" % (file_descr.file.filename), out, err)
return False
wavedata = WaveData()
wavedata.extractData(toopen, 2)
channels = wavedata.getData()
gcolor = options['color']
plt.figure(1, figsize=options['size'])
if wavedata.nchannels == 2:
plt.subplot(211)
plt.plot(channels[0], color=gcolor)
plt.axis('off')
plt.subplot(212)
plt.plot(channels[1], color=gcolor)
else:
plt.plot(channels[0])
plt.axis('off')
full_path = os.path.join(dest_path, file_path)
if not os.path.exists(os.path.dirname(full_path)):
os.makedirs(os.path.dirname(full_path))
plt.savefig(full_path, dpi=options['dpi'])
return [file_path]
def transcode(self, dest_path, file_descr, asset_id, target_mimetype,
**options):
file_path = expand_path_template(target_mimetype.template,
target_mimetype.mimetype, asset_id, **options)
audio_mimetype = mimetypes.guess_type(file_descr.file.filename)[0]
try:
tmp = tempfile.NamedTemporaryFile()
pro = subprocess.Popen(["sox", file_descr.file.filename, "-t", "wav", "-r", str(options['samplerate']), tmp.name],
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = pro.communicate()
if pro.returncode != 0:
print("Sox failed %s with error code %d!" %(file_decrs.file.filename, pro.returncode),
out, err)
return False
else:
toopen = tmp.name
except OSError:
print("Sox failed %s!" %(file_descr.file.filename), out, err)
return False
wavedata = WaveData()
wavedata.extractData(toopen, options['precision'])
channels = wavedata.getData()
if wavedata.nchannels == options['channels']:
if options['channels'] == 1:
transcoded = json.dumps({"mono": channels[0]})
elif options['channels'] ==2:
transcoded = json.dumps({"left": channels[0], "right": channels[1]})
else:
if options['channels'] == 1:
transcoded = json.dumps({"mono": channels[0]})
else :
transcoded = json.dumps({"left": channels[0], "right": channels[0]})
full_path = os.path.join(dest_path, file_path)
if not os.path.exists(os.path.dirname(full_path)):
os.makedirs(os.path.dirname(full_path))
output_file = open(full_path, 'w')
output_file.write(transcoded)
output_file.close()
return [file_path]
def transcode(self, dest_path, file_descr, asset_id, target_mimetype,
**options):
file_path = expand_path_template(target_mimetype.template,
target_mimetype.mimetype, asset_id, **options)
audio_mimetype = mimetypes.guess_type(file_descr.file.filename)[0]
try:
tmp = tempfile.NamedTemporaryFile()
pro = subprocess.Popen(["sox", file_descr.file.filename, "-t", "wav", "-r", str(options['samplerate']), tmp.name],
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = pro.communicate()
if pro.returncode != 0:
print("Sox failed %s with error code %d!" %(file_decrs.file.filename, pro.returncode),
out, err)
return False
else:
toopen = tmp.name
except OSError:
print("Sox failed %s!" %(file_descr.file.filename), out, err)
return False
wavedata = WaveData()
wavedata.extractData(toopen, 2)
channels = wavedata.getData()
gcolor = options['color']
plt.figure(1, figsize = options['size'])
if wavedata.nchannels == 2:
plt.subplot(211)
plt.plot(channels[0], color = gcolor)
plt.axis('off')
plt.subplot(212)
plt.plot(channels[1], color = gcolor)
else:
plt.plot(channels[0])
plt.axis('off')
full_path = os.path.join(dest_path, file_path)
if not os.path.exists(os.path.dirname(full_path)):
os.makedirs(os.path.dirname(full_path))
plt.savefig(full_path, dpi = options['dpi'])
return [file_path]