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import os | |
import sys | |
import numpy as np | |
import pickle | |
sys.path.append('../../') | |
from src.music.utils import get_out_path | |
from src.music.config import ALL_NOISE, ALL_AUGMENTATIONS, NB_AUG, NOISE_INJECTED | |
from src.music.utilities.midi_processor import encode_midi_structured, encode_midi_chunks_structured | |
nb_noise = ALL_NOISE.shape[0] | |
nb_aug = ALL_AUGMENTATIONS.shape[0] | |
def sample_augmentations(n): | |
return ALL_AUGMENTATIONS[np.random.choice(np.arange(nb_aug), size=n, replace=False)] | |
def sample_noise(): | |
return ALL_NOISE[np.random.choice(np.arange(nb_noise))] | |
def processed2encoded(processed_path, encoded_path=None, augmentation=False, nb_aug=None, noise_injection=False, verbose=False, level=0): | |
assert processed_path.split('.')[-1] in ['mid', 'midi'] | |
if not encoded_path: | |
encoded_path, _, _ = get_out_path(in_path=processed_path, in_word='processed', out_word='encoded', out_extension='.pickle') | |
if verbose: print(' ' * level + f'Encoding {processed_path}') | |
if os.path.exists(encoded_path): | |
if verbose: print(' ' * (level + 2) + 'Midi file is already encoded.') | |
return encoded_path, '' | |
if augmentation: | |
assert isinstance(nb_aug, int) | |
error_msg = 'Error in encoding. ' | |
try: | |
error_msg = 'Error in encoding midi?' | |
nb_noise = 1 if noise_injection else 0 | |
encoded_main, encoded_aug, encoded_noisy = encode_midi_structured(processed_path, nb_aug, nb_noise) | |
# make sure augmentations are not out of bounds | |
error_msg = ' Nope. Error in saving encoding?' | |
with open(encoded_path, 'wb') as f: | |
pickle.dump(dict(main=encoded_main, aug=encoded_aug, noisy=encoded_noisy), f) | |
error_msg = ' Nope.' | |
if verbose: | |
extra = f' Saved to {encoded_path}' if encoded_path else '' | |
print(' ' * (level + 2) + f'Success! {extra}') | |
return encoded_path, '' | |
except: | |
if verbose: print(' ' * (level + 2) + 'Transcription failed.') | |
if os.path.exists(encoded_path): | |
os.remove(encoded_path) | |
return None, error_msg + ' Yes.' | |