def file_processing(path, quantization, clip):
reader_midi = Read_midi(path, quantization)
# Read midi
reader_midi.read_file()
pianoroll = reader_midi.pianoroll
# Clip
if clip:
pianoroll = clip_pr(pianoroll)
return pianoroll, get_pianoroll_time(pianoroll)
# Little hack for a little problem i ran into :
# harpsichord was only present as a mixed instrument in the database
# Then it never appears in the instrument mapping though
# it is a track name for valid names...
if instru_name not in instru_mapping.keys():
print instru_name + ' does not have pitch and indices ranges'
continue
# For pr_instrument, remove the column out of pitch_min and pitch_max
pitch_min = instru_mapping[instru_name]['pitch_min']
pitch_max = instru_mapping[instru_name]['pitch_max']
# Determine thanks to instru_mapping the y_min and y_max in pr_big
index_min = instru_mapping[instru_name]['index_min']
index_max = instru_mapping[instru_name]['index_max']
# Insert the small pr in the big one :)
try:
# Insertion is max between already written notes and new ones
pr_big[t_min:t_max, index_min:index_max] = np.maximum(pr_big[t_min:t_max, index_min:index_max], pr_instru[:, pitch_min:pitch_max])
except:
import pdb; pdb.set_trace()
return pr_big
if __name__=='__main__':
name = 'DEBUG/test.mid'
reader = Read_midi(name, 12)
time = reader.get_time()
pr = reader.read_file()
def pitch_class(pr):
nb_class = 12
nb_pitch = pr.shape[1]
if not nb_pitch == 128:
raise Exception('Pitch dimension should be equal to 128')
pr_red = np.zeros((pr.shape[0], nb_class))
for p in range(nb_pitch):
c = p % nb_class
pr_red[:, c] += pr[:, p]
# Binary
pr_red_bin = (pr_red > 0).astype(int)
return pr_red_bin
def extract_pianoroll_part(pianoroll, start_time, end_time):
new_pr = {}
# Start and end time are given in discrete frames
for k, v in pianoroll.items():
new_pr[k] = v[start_time:end_time]
return new_pr
if __name__ == "__main__":
from acidano.data_processing.midi.read_midi import Read_midi
song_path = 'test.mid'
midifile = Read_midi(song_path, 8)
midifile.read_file()
pr = midifile.pianoroll
pr_class = pitch_class(pr)