def main(argv):
"""
Executes an action on the database
Required actions:
clear database
add
add new song
add batch of songs from folder
argv:
param 0:
action name
# EXAMPLES:
# python database.py clear songs
# python database.py add ~/Music/Dubstep/somesong.wav dubstep
# python database.py add ~/Music/Dubstep/ -1 dubstep
#
# Multi genre:
# python database.py add ~/Music/Dubstep/somesong.wav dubstep dnb progressive
#
:param argv:
:return:
"""
# logging.basicConfig(level=logging.DEBUG)
logs.enable_default_log()
if len(argv) < 1:
print "Required parameter action"
print
return
supported_ext = [".wav"]
action = argv[0]
if action == "add":
abs_path = os.path.abspath(argv[1])
if os.path.isfile(abs_path):
if len(argv) < 3:
print "Required parameters path genre0 genre1 ... genre n"
print
filename, extension = os.path.splitext(abs_path)
if extension in supported_ext:
# file is valid and we can add it to the database
genres = argv[2:]
db_control = DatabaseService()
db_control.add_song(abs_path, genres)
print "Song added for genres " + ', '.join(genres) + " at:"
print abs_path
else:
print extension + " is not a supported file type."
elif os.path.isdir(abs_path):
if len(argv) < 4:
print "Required parameters path maxcount genre0 genre1 ... genre n"
print
all_files = os.listdir(abs_path)
max_count = int(argv[2])
genres = argv[3:]
all_wavs = []
for file in all_files:
filename, extension = os.path.splitext(file)
if extension in supported_ext:
# rename the file to remove special characters
oldpath = abs_path + '/' + filename + extension
newpath = abs_path + '/' + re.sub('[^\w\.\-]+', ' ', filename) + extension
os.rename(oldpath, newpath)
all_wavs.append(newpath)
count = 0
db_control = DatabaseService()
for wav in all_wavs:
if max_count == -1 or count < max_count: # -1 means add all files
abswav = os.path.join(abs_path, wav)
db_control.add_song(abswav, genres)
count += 1
print "FINISHED adding " + str(count) + " songs for genre(s) " + ', '.join(genres)
elif action == "clear":
if len(argv) < 2:
print "required param type for clear. Types: 'songs', 'features'"
return
db_control = DatabaseService()
ctype = argv[1]
if ctype == "songs":
db_control.delete_all_songs()
elif ctype == "features":
db_control.delete_all_features()
else:
db_control.delete_song(ctype)
return
training_set = db_service.get_training_set(genres, required_features, songs_per_genre, verbose=True)
cross_val = CrossValidation(training_set, k_folds=6)
average_hit_rate = 0
count = 0
validator = Validator()
for ts, vs in cross_val:
learner = LearnerSVC()
learner.fit(ts)
results = validator.validate_next(learner, vs)
average_hit_rate += results.hit_rate()
count += 1.0
print results
print "Total samples: " + str(training_set.total_samples())
print "Training/Validation: " + str(cross_val.training_size()) + " / " + str(cross_val.validation_size())
print "Average hit rate: %" + "%.2f" % (100 * average_hit_rate / count)
if __name__ == "__main__":
with warnings.catch_warnings():
warnings.simplefilter("ignore")
logs.enable_default_log()
main(sys.argv[1:])
# create_trained_model()