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from argparse import ArgumentParser
from tqdm import tqdm
from anticipation.vocab import *
from anticipation.ops import get_instruments
if __name__ == '__main__':
parser = ArgumentParser(description='inspect a MIDI dataset')
parser.add_argument('filename',
help='file containing a tokenized MIDI dataset')
args = parser.parse_args()
with open(args.filename, 'r') as f:
for line in tqdm(list(f)):
tokens = [int(token) for token in line.split()]
tokens = tokens[1:] # strip control codes
assert(len([tok for tok in tokens if tok == SEPARATOR]) % 3 == 0)
num_instruments = len(get_instruments(tokens))
assert num_instruments <= MAX_TRACK_INSTR
# check the ordering
previous_time = TIME_OFFSET+0
anticipation_time = ATIME_OFFSET+0
check = False
for time in tokens[0::3]:
if time == SEPARATOR:
# reset the time counters for new sequence
previous_time = TIME_OFFSET+0
anticipation_time = ATIME_OFFSET+0
continue
if time < CONTROL_OFFSET: # event token
assert(previous_time <= time) # events should come in order
previous_time = time
if check: # if the last token was anticipated
# check sequence ordering
assert(anticipation_time - CONTROL_OFFSET <= time + DELTA*TIME_RESOLUTION)
check = False
else: # anticipated token
assert(anticipation_time <= time)
anticipation_time = time
check = True
print('Integrity check passed for', args.filename)
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