class RandomSelectionStrategy(object):
implements(TrackSelectionStrategy)
def __init__(self):
self._sess = DBSession()
def get_tracks(self, num=1):
return self._sess.query(m.TrackOriginal).\
order_by(func.random()).\
limit(num).all()
import sys
import audiotools
from ireul.environment import DBSession, create_all
from ireul.storage import models as m
from ireul.storage.filesystem import cont_addr
from ireul import utils as u
create_all()
fn = sys.argv[1]
track = u.insert_track(fn)
session = DBSession()
if session.query(m.Blob).filter(m.Blob.cont_addr == track.blob.cont_addr).count() == 0:
metadata = track.metadata
while len(metadata.images()) > 0:
metadata.delete_image(metadata.images()[0])
track.metadata = metadata
session.add(track)
session.commit()
import sys
import struct
import audiotools
from ireul.environment import DBSession, create_all
from ireul.settings import ENCODE_PARAMS
from ireul.storage import models as m
from ireul.storage.filesystem import cont_addr
from ireul import utils as u
create_all()
session = DBSession()
for track in session.query(m.TrackOriginal).filter(
m.TrackOriginal._id.in_(list(xrange(6519, 6532)))).all():
encoding_params = audiotools.EncodingParams(**ENCODE_PARAMS)
encoding_params['serial'], = struct.unpack('!I',
track.blob.cont_addr[-8:].decode('hex'))
track_deriv = track.derivatives.\
filter_by(
codec='VorbisAudio',
encoding_params=encoding_params
).count()
if track_deriv > 0:
continue
new_track = u.transcode(track, audiotools.VorbisAudio, encoding_params)
session.add(new_track)
session.commit()
def __init__(self):
self._sess = DBSession()
