def create_midi_file(gt_midi, model_output_dir, midi_output_dir, filename, step='time', max_len=30):
"""
Convert csv piano rolls into MIDI files, for a single given MIDI file.
Parameters
==========
gt_midi : string
The directory containing all of the ground truth MIDI files there are csv files for.
model_output_dir : string
The directory containing the output csv files to convert.
midi_output_dir : string
The directory to write the resulting MIDI files to.
filename : string
The MAPS filename of the MIDI file to convert.
step : string
The frame step type to use for conversion. Either "time" (default), "quant", or "event".
max_len : int
The number of seconds of each file to convert. Defaults to 30.
"""
data = DataMaps()
data.make_from_file(os.path.join(gt_midi, filename), step, [0, max_len], acoustic_model="kelz")
csv_path = os.path.join(model_output_dir, filename.replace('.mid', '_pr.csv'))
roll = np.loadtxt(csv_path)
roll_time = convert_note_to_time(roll, data.corresp, data.input_fs, max_len=max_len)
midi_data = make_midi_from_roll(roll_time, 25)
output_filename = os.path.join(midi_output_dir, get_name_from_maps(filename) + '_' + filename[-6:-4])
save_midi(midi_data, output_filename + '.mid')
def test(params):
global priors
global step
global order
global with_offset
print(params)
transitions = np.zeros((88, 2 ** order, 2))
for i in range(88):
transitions[i, :, 0] = params
transitions[i, :, 1] = 1 - transitions[i, :, 0]
frames = np.zeros((0, 3))
notes = np.zeros((0, 3))
folder = "data/outputs-20/valid"
for file in glob.glob(os.path.join(folder, "*.mid")):
print(file)
sys.stdout.flush()
data = DataMaps()
data.make_from_file(file, step, [0, 30], acoustic_model="kelz")
pr = hmm_eval.decode_all_pitches(data.input, priors, transitions)
if step != "time":
pr = convert_note_to_time(pr, data.corresp, data.input_fs, max_len=30)
data = DataMaps()
data.make_from_file(file, "time", section=[0, 30], acoustic_model="kelz")
target = data.target
#Evaluate
P_f,R_f,F_f = compute_eval_metrics_frame(pr, target)
P_n,R_n,F_n = compute_eval_metrics_note(pr, target, min_dur=0.05, with_offset=with_offset)
print(f"Frame P,R,F: {P_f:.3f},{R_f:.3f},{F_f:.3f}, Note P,R,F: {P_n:.3f},{R_n:.3f},{F_n:.3f}")
sys.stdout.flush()
frames = np.vstack((frames, [P_f, R_f, F_f]))
notes = np.vstack((notes, [P_n, R_n, F_n]))
P_f, R_f, F_f = np.mean(frames, axis=0)
P_n, R_n, F_n = np.mean(notes, axis=0)
print(f"Frame P,R,F: {P_f:.3f},{R_f:.3f},{F_f:.3f}, Note P,R,F: {P_n:.3f},{R_n:.3f},{F_n:.3f}")
print(str(F_n) + ": " + str(params))
sys.stdout.flush()
out = "hmm/models/" + step + "." + str(order) + "." + str(F_n) + ".pkl"
with open(out, "wb") as file:
pickle.dump({"priors" : priors,
"transitions" : transitions}, file)
return -F_n
def get_list_of_dataMaps(self,subfolder,timestep_type,max_len=None,length_of_chunks=None,method='step'):
dataset = []
#Set up progress bar
filecounter = 0
for filepath in self.walkdir(subfolder):
filecounter += 1
print(("Now loading: "+os.path.split(subfolder)[-1].upper()))
pbar = tqdm(self.walkdir(subfolder), total=filecounter, unit="files")
for fn in pbar:
pbar.set_postfix(file=fn[9:19], refresh=False)
filename = os.path.join(subfolder,fn)
if length_of_chunks == None:
data = DataMaps()
if max_len == None:
data.make_from_file(filename,timestep_type,None,method,acoustic_model=self.acoustic_model)
else:
data.make_from_file(filename,timestep_type,[0,max_len],method,acoustic_model=self.acoustic_model)
data.name = os.path.splitext(os.path.basename(filename))[0]
dataset += [data]
else :
#Cut each file in chunks of 'length_of_chunks' seconds
#Make a new dataMaps for each chunk.
data_whole = DataMaps()
data_whole.make_from_file(filename,timestep_type,None,method,acoustic_model=self.acoustic_model)
if max_len == None:
end_file = data_whole.duration
else :
end_file = max_len
begin = 0
end = 0
i = 0
data_list = []
while end < end_file:
end = min(end_file,end+length_of_chunks)
data = data_whole.copy_section([begin,end])
data.name = os.path.splitext(os.path.basename(filename))[0]+"_"+str(i)
data_list += [data]
begin = end
i += 1
dataset += data_list
return dataset
def weight_search(params, num=0, verbose=False):
print(params)
sys.stdout.flush()
gt = params[0]
min_diff = params[1]
history = int(params[2])
num_layers = int(params[3])
is_weight = params[4]
features = params[5]
history_context = 0
prior_context = 0
if len(params) > 6:
history_context = params[6]
prior_context = params[7]
use_lstm = True
if len(params) > 8:
use_lstm = params[8]
warnings.filterwarnings("ignore", message="tick should be an int.")
max_len = 30
section = [0, max_len]
note_range = [21, 109]
note_min = note_range[0]
note_max = note_range[1]
# Load model
model = model_dict['model']
sess = model_dict['sess']
# Get weight_model data
pkl = data_dict['gt' if gt else 'beam']
X = pkl['X']
Y = pkl['Y']
D = pkl['D']
max_history = pkl['history']
no_mlm = pkl['no_mlm'] if 'no_mlm' in pkl else False
if np.max(D) < min_diff:
print("No training data generated")
sys.stdout.flush()
return 0.0
data_points = np.where(D > min_diff)
data_features = []
if history > 0:
data_features.extend(range(max_history - history, max_history))
if features:
data_features.extend(range(max_history, len(X[0]) - 2))
data_features.append(-2)
if use_lstm:
data_features.append(-1)
X = X[:, data_features]
if prior_context + history_context > 0:
X_new = np.zeros(
(X.shape[0],
X.shape[1] + prior_context * 4 + 2 * history_context * history))
for i in range(int(X.shape[0] / 88)):
x_frame = X[88 * i:88 * (i + 1), :]
X_new[88 * i:88 * (i + 1), :] = pad_x(x_frame, x_frame[:, -2],
x_frame[:, -1],
x_frame[:, :history],
history, history_context,
prior_context)
X = X_new
X = X[data_points]
Y = Y[data_points]
if len(X) == 0:
print("No training data generated")
sys.stdout.flush()
return 0.0
# Train weight model
print("Training weight model")
sys.stdout.flush()
layers = []
for i in range(num_layers):
layers.append(5)
weight_model = train_model(X, Y, layers=layers, weight=is_weight)
global most_recent_model
most_recent_model = {
'model': weight_model,
'history': history,
'features': features,
'weight': is_weight,
'history_context': history_context,
'prior_context': prior_context,
'use_lstm': use_lstm,
'no_mlm': no_mlm
}
weight_model_name = "weight_model."
weight_model_name += "gt" if gt else "b10"
weight_model_name += "_md" + str(min_diff)
weight_model_name += "_h" + str(history)
weight_model_name += "_l" + str(num_layers)
if features:
weight_model_name += "_f"
weight_model_name += "_hc" + str(history_context)
weight_model_name += "_pc" + str(prior_context)
if not use_lstm:
weight_model_name += "_noLSTM"
if no_mlm:
weight_model_name += "_noMLM"
weight_model_name += "_weight" if is_weight else "_prior"
weight_model_name += "." + global_params['step'] + "." + str(num) + ".pkl"
# Write out weight model
with open(os.path.join(global_params['model_out'], weight_model_name),
"wb") as file:
pickle.dump(most_recent_model, file)
results = {}
frames = np.zeros((0, 3))
notes = np.zeros((0, 3))
for filename in glob.glob(os.path.join(data_dict['valid'], "*.mid")):
print(filename)
sys.stdout.flush()
data = DataMaps()
data.make_from_file(filename,
global_params['step'],
section,
acoustic_model=global_params['acoustic'])
# Decode
pr, priors, weights, combined_priors = decode(
data.input,
model,
sess,
branch_factor=5,
beam_size=50,
weight=[[0.8], [0.2]],
out=None,
hash_length=12,
weight_model=weight_model,
verbose=verbose,
weight_model_dict=most_recent_model)
if global_params['step'] != "time":
pr = convert_note_to_time(pr,
data.corresp,
data.input_fs,
max_len=max_len)
data = DataMaps()
data.make_from_file(filename,
"time",
section=section,
acoustic_model=global_params['acoustic'])
target = data.target
#Evaluate
P_f, R_f, F_f = compute_eval_metrics_frame(pr, target)
P_n, R_n, F_n = compute_eval_metrics_note(pr, target, min_dur=0.05)
print(
f"Frame P,R,F: {P_f:.3f},{R_f:.3f},{F_f:.3f}, Note P,R,F: {P_n:.3f},{R_n:.3f},{F_n:.3f}"
)
sys.stdout.flush()
frames = np.vstack((frames, [P_f, R_f, F_f]))
notes = np.vstack((notes, [P_n, R_n, F_n]))
if F_n < global_params['early_exit']:
print("Early stopping, F-measure too low.")
sys.stdout.flush()
return 0.0
P_f, R_f, F_f = np.mean(frames, axis=0)
P_n, R_n, F_n = np.mean(notes, axis=0)
print(
f"Frame P,R,F: {P_f:.3f},{R_f:.3f},{F_f:.3f}, Note P,R,F: {P_n:.3f},{R_n:.3f},{F_n:.3f}"
)
print(str(F_n) + ": " + str(params))
sys.stdout.flush()
return -F_n
results = {}
if args.save is not None:
safe_mkdir(args.save)
for fn in os.listdir(input_folder):
if fn.endswith(
'_pr.csv') and not fn.startswith('.') and not 'chpn-e01' in fn:
filename_input = os.path.join(input_folder, fn)
filename_target = os.path.join(target_folder,
fn).replace('_pr.csv', '.mid')
print(filename_input)
data = DataMaps()
data.make_from_file(filename_target,
'time', [0, 30],
acoustic_model='kelz')
input_roll = np.loadtxt(filename_input)
target_roll = data.target
mask = data.get_key_profile()
mask_octave = data.get_key_profile_octave()
# import matplotlib.pyplot as plt
# plt.imshow(mask, aspect='auto')
# plt.show(block=[bool])
if args.step in ['quant', 'quant_short', 'event']:
data_quant = DataMaps()
data_quant.make_from_file(filename_target,
args.step, [0, 30],
folder_est = 'results/beat/baseline_est'
folder_gt = 'results/beat/baseline_gt'
filename = os.path.join(folder,filename)
data = DataMaps()
data.make_from_file(filename,'time',section=[0,30], acoustic_model='kelz')
roll_gt = data.target
data_est = DataMapsBeats()
data_est.make_from_file(filename,False,section=[0,30], acoustic_model='kelz')
est_roll = np.loadtxt(os.path.join(folder_est,os.path.basename(filename).replace('.mid','_pr.csv')))
# est_roll = (data_est.input>0.5).astype(float)
roll_time_est = convert_note_to_time(est_roll,data_est.corresp,25,30)
data_gt = DataMapsBeats()
data_gt.make_from_file(filename,True,section=[0,30], acoustic_model='kelz')
gt_roll = np.loadtxt(os.path.join(folder_gt,os.path.basename(filename).replace('.mid','_pr.csv')))
# gt_roll = (data_gt.input>0.5).astype(float)
roll_time_gt = convert_note_to_time(gt_roll,data_gt.corresp,25,30)
print(est_roll.shape)
"text file. Anything other than a number will evaluate on whole files. Default is 30s.",
default=30)
args = parser.parse_args()
try:
max_len = float(args.max_len)
section = [0, max_len]
except:
max_len = None
section = None
print("Reading MIDI files")
prs = []
for file in glob.glob(os.path.join(args.data_path, "*.mid")):
data = DataMaps()
data.make_from_file(file, args.step, section)
prs.append(data.target)
print("Calculating priors and transition probabilities")
with open(args.output, "wb") as file:
pickle.dump(
{
"priors": get_pitch_priors(prs),
"transitions": get_transition_probs(prs)
}, file)