def open(self, filename):
# Patterns Object
song = Song()
f = open(filename)
line = f.readline()
#f.write("Desfonema Sequencer File Format Version 1.1\n")
version = line[40:-1]
#Old version 1 format used 8 ticks for each beat instead of 24
#so we need to compensate if it's an old format file.
if version == '1':
shifter = 3
else:
shifter = 1
#Level Pattern(0) Track(1) or Notes(2)
level = 0
while line:
line = line[:-1]
if line == "Pattern":
pattern = Pattern()
song.add_pattern(pattern)
level = 1
if line == "Track":
track = pattern.add_track()
level = 2
if line == "Notes":
level = 3
if line == "Controls":
level = 5
if line == "Pitchbends":
level = 6
if line == "Channel":
channel = Channel()
song.add_channel(channel)
level = 4
if level == 0:
if line[:5] == "Bpm: ":
song.set_bpm(int(line[5:]))
if level == 1:
#On Pattern Data
if line[:5] == "Num: ":
pattern.set_num(int(line[5:]))
elif line[:5] == "Len: ":
pattern.set_len(int(line[5:]))
elif line[:6] == "Name: ":
pattern.set_name(line[6:])
elif level == 2:
if line[:5] == "Len: ":
track.set_len(int(line[5:]))
elif line[:6] == "Name: ":
track.set_name(line[6:])
elif line[:8] == "Volume: ":
track.set_volume(int(line[8:]))
elif line[:7] == "Synth: ":
track.set_synth(line[7:])
elif line[:6] == "Port: ":
track.set_port(int(line[6:]))
elif level == 3:
if line == "Notes":
pass
elif line == "EndNotes":
level = 2
else:
line_data = line.split(', ')
(note, pos, duration) = (line_data[0], line_data[1], line_data[2])
if len(line_data) == 4:
volume = int(line_data[3])
else:
volume = 127
track.add_note(int(note),int(pos)*shifter,int(duration)*shifter, volume)
elif level == 5:
if line == "Controls":
pass
elif line == "EndControls":
level = 2
else:
line_data = line.split(', ')
(pos, param, value) = (line_data[0], line_data[1], line_data[2])
track.set_control(int(pos), int(param), int(value))
elif level == 5:
if line == "Pitchbends":
pass
elif line == "EndPitchbends":
level = 2
else:
line_data = line.split(', ')
(pos, value) = (line_data[0], line_data[1])
track.set_control(int(pos), int(value))
elif level == 4:
if line[:5] == "Pat: ":
channel.add_pattern(song.get_pattern_by_name(line[5:]))
line = f.readline()
f.close()
return song
