def clean(self):
"""
Clean up the leveller.
After calling this, the object cannot be used anymore.
"""
# clean ourselves up completely
self.stop()
self.remove(self._source)
self.remove(self._level)
self.remove(self._fakesink)
gst.debug("Emptied myself")
utils.gc_collect('Leveller.clean() cleaned up source')
self.debug("source refcount: %d" % self._source.__grefcount__)
self._source = None
self._fakesink = None
self._level = None
self.rmsdBs = None
self.peakdBs = None
self.decaydBs = None
utils.gc_collect('Leveller.clean() done')
self.debug("clean done, refcount now %d" % self.__grefcount__)
def stop(self):
"""
Stop the leveller.
Call this after the leveller emitted 'done'.
Calls clean.
"""
gst.debug("Setting to NULL")
self.set_state(gst.STATE_NULL)
self.debug("Set to NULL, refcount now %d" % self.__grefcount__)
utils.gc_collect('Leveller.stop()')
def clean(self):
"""
Clean up the leveller.
After calling this, the object cannot be used anymore.
"""
self.pipeline.remove(self._source)
self.pipeline.remove(self._level)
self.pipeline.remove(self._fakesink)
self.debug("Emptied myself")
from gst.extend import utils
utils.gc_collect('Leveller.clean() cleaned up source')
self.debug("source refcount: %d" % self._source.__grefcount__)
self._source = None
self._fakesink = None
self._level = None
self.rmsdBs = None
self.peakdBs = None
self.decaydBs = None
utils.gc_collect('Leveller.clean() done')
self.debug("clean done, refcount now %d" % self.pipeline.__grefcount__)
def run(leveller):
gst.debug('leveller refcount on creation: %d' % leveller.__grefcount__)
bus = leveller.get_bus()
bus.add_signal_watch()
done = False
success = False
gst.debug('leveller refcount before start: %d' % leveller.__grefcount__)
utils.gc_collect('before start')
leveller.start()
gst.debug('leveller refcount after start: %d' % leveller.__grefcount__)
utils.gc_collect('after start')
while not done:
# this call blocks until there is a message
message = bus.poll(gst.MESSAGE_ANY, gst.SECOND)
if message:
gst.log("got message from poll: %s/%r" % (message.type, message))
else:
gst.log("got NOTHING from poll")
if message:
if message.type == gst.MESSAGE_EOS:
done = True
success = True
elif message.type == gst.MESSAGE_ERROR:
done = True
# message, if set, holds a ref to leveller, so we delete it here
# to assure cleanup of leveller when we del it
m = repr(message)
del message
utils.gc_collect('deleted message %s' % m)
bus.remove_signal_watch()
del bus
utils.gc_collect('deleted bus')
leveller.stop()
return success
try:
leveller = Leveller(sys.argv[1])
except IndexError:
sys.stderr.write("Please give a file to calculate level of\n")
sys.exit(1)
success = run(leveller)
if success:
print 'Successfully analyzed file.'
if len(sys.argv) > 2:
path = sys.argv[2]
handle = open(path, 'w')
import pickle
rms = leveller.get_rms_dB()
pickle.dump(rms, handle, pickle.HIGHEST_PROTOCOL)
handle.close()
print 'Dumped RMS dB pickle to %s' % path
leveller.clean()
assert leveller.__grefcount__ == 1, "There is a leak in leveller's refcount"
gst.debug('deleting leveller, verify objects are freed')
del leveller
utils.gc_collect('deleted leveller')
utils.gc_collect('deleted leveller')
utils.gc_collect('deleted leveller')
# some more cleanup to help valgrind
gst.debug('stopping forever')
else:
gst.log("got NOTHING from poll")
if message:
if message.type == gst.MESSAGE_EOS:
done = True
success = True
elif message.type == gst.MESSAGE_ERROR:
sys.stderr.write('Error analyzing file:\n')
error, debug = message.parse_error()
sys.stderr.write('%s.\n' % error)
done = True
# message, if set, holds a ref to leveller, so we delete it here
# to assure cleanup of leveller when we del it
del message
utils.gc_collect('deleted message')
l.stop()
if success:
print 'Successfully analyzed file %r' % path
trackMixes = l.get_track_mixes()
print '%d slice(s) found.' % len(trackMixes)
for i, m in enumerate(trackMixes):
print '- slice %d: %s - %s' % (
i, gst.TIME_ARGS(m.start), gst.TIME_ARGS(m.end))
print ' - peak %02.3f dB (%03.3f %%)' % (
m.peak, common.decibelToRaw(m.peak) * 100.0)
print ' - rms %r dB' % m.rms
print ' - peak rms %r dB' % m.rmsPeak
print ' - 95 percentile rms %r dB' % m.rmsPercentile