def __init__(self, BPM, bar_division):
"""Keeps the program running and delegates tasks to sub-classes."""
self.profile_manager = ProfileManager(self)
self.midi = Midi(0)
self.database_manager = DatabaseManager()
self.chord_generator = ChordGenerator()
self.profile_manager.add_profile("Profile1", 4)
self.profile_manager.add_profile("Profile2", 9)
self.bar_division = bar_division # tells how many frames one bar is broken into
self.set_BPM(BPM)
self.playlist = self.get_empty_playlist()
self.timer = QtCore.QTimer()
self.timer.timeout.connect(self.next_frame)
self.frame = self.bar_division
self.bar = 3
self.timer.start(self.frame_length * 1000)
def __init__(self, BPM, bar_division):
"""Keeps the program running and delegates tasks to sub-classes."""
self.profile_manager = ProfileManager(self)
self.midi = Midi(0)
self.database_manager = DatabaseManager()
self.chord_generator = ChordGenerator()
self.profile_manager.add_profile("Profile1", 4)
self.profile_manager.add_profile("Profile2", 9)
self.bar_division = bar_division # tells how many frames one bar is broken into
self.set_BPM(BPM)
self.playlist = self.get_empty_playlist()
self.timer = QtCore.QTimer()
self.timer.timeout.connect(self.next_frame)
self.frame = self.bar_division
self.bar = 3
self.timer.start(self.frame_length * 1000)
class Logic():
def __init__(self, BPM, bar_division):
"""Keeps the program running and delegates tasks to sub-classes."""
self.profile_manager = ProfileManager(self)
self.midi = Midi(0)
self.database_manager = DatabaseManager()
self.chord_generator = ChordGenerator()
self.profile_manager.add_profile("Profile1", 4)
self.profile_manager.add_profile("Profile2", 9)
self.bar_division = bar_division # tells how many frames one bar is broken into
self.set_BPM(BPM)
self.playlist = self.get_empty_playlist()
self.timer = QtCore.QTimer()
self.timer.timeout.connect(self.next_frame)
self.frame = self.bar_division
self.bar = 3
self.timer.start(self.frame_length * 1000)
def set_BPM(self, BPM):
"""Sets the BPM and calculates the length of a bar and a frame."""
self.BPM = BPM
self.bar_length = 60 / self.BPM
self.frame_length = self.bar_length / self.bar_division
def set_timer_interval(self):
self.timer.setInterval(self.frame_length * 1000)
def next_frame(self):
"""Moves to the next frame in the main playlist."""
# create new chords every four bars
if self.bar == 3 and self.frame == self.bar_division:
self.next_chords = self.chord_generator.get_next_chords()
self.frame = 0
self.bar = -1
self.chord_idx = 0
# get profiles' playlists after every bar
if self.frame % self.bar_division == 0:
self.playlist = self.get_empty_playlist()
self.playlist = self.get_playlists(
self.next_chords[self.chord_idx])
self.chord_idx += 1
self.bar += 1
self.frame = 0
print("The playlist for the next bar: " + str(self.playlist))
self.send_midi_notes(self.frame)
print("Frame: " + str(self.frame) + " Bar: " + str(self.bar))
self.frame += 1
def get_playlists(self, chord):
"""Gets the playlist for the next bar from each of the profiles."""
for profile in self.profile_manager.profiles:
tmp_playlist = profile.get_playlist(chord)
self.playlist = self.merge_playlists(self.playlist, tmp_playlist)
return self.playlist
def merge_playlists(self, playlist1, playlist2):
"""Merges two playlists and returns them in one."""
for index, item in enumerate(playlist2):
playlist1[index].append(item)
return playlist1
def send_midi_notes(self, frame):
"""Sends the individual MIDI notes of the current frame to Midi class."""
for note in self.playlist[frame]:
if note is not "0":
channel, note, length, velocity = self.decode(note)
self.midi.play_note(channel, note, length, velocity)
def decode(self, note):
"""Decodes a note.
@type note: str in format: CHN-NOTE-LEN-VEL eg. 1-50-16-65
@rtype: int, int, int, int
"""
parts = note.split("-")
return int(parts[0]), int(parts[1]), int(parts[2]), int(parts[3])
def get_empty_playlist(self):
"""Returns an empty list of lists corresponding to the bar_division value."""
return [[] for i in range(self.bar_division)]
class Logic():
def __init__(self, BPM, bar_division):
"""Keeps the program running and delegates tasks to sub-classes."""
self.profile_manager = ProfileManager(self)
self.midi = Midi(0)
self.database_manager = DatabaseManager()
self.chord_generator = ChordGenerator()
self.profile_manager.add_profile("Profile1", 4)
self.profile_manager.add_profile("Profile2", 9)
self.bar_division = bar_division # tells how many frames one bar is broken into
self.set_BPM(BPM)
self.playlist = self.get_empty_playlist()
self.timer = QtCore.QTimer()
self.timer.timeout.connect(self.next_frame)
self.frame = self.bar_division
self.bar = 3
self.timer.start(self.frame_length * 1000)
def set_BPM(self, BPM):
"""Sets the BPM and calculates the length of a bar and a frame."""
self.BPM = BPM
self.bar_length = 60 / self.BPM
self.frame_length = self.bar_length / self.bar_division
def set_timer_interval(self):
self.timer.setInterval(self.frame_length * 1000)
def next_frame(self):
"""Moves to the next frame in the main playlist."""
# create new chords every four bars
if self.bar == 3 and self.frame == self.bar_division:
self.next_chords = self.chord_generator.get_next_chords()
self.frame = 0
self.bar = -1
self.chord_idx = 0
# get profiles' playlists after every bar
if self.frame % self.bar_division == 0:
self.playlist = self.get_empty_playlist()
self.playlist = self.get_playlists(self.next_chords[self.chord_idx])
self.chord_idx += 1
self.bar += 1
self.frame = 0
print("The playlist for the next bar: " + str(self.playlist))
self.send_midi_notes(self.frame)
print("Frame: " + str(self.frame) + " Bar: " + str(self.bar))
self.frame += 1
def get_playlists(self, chord):
"""Gets the playlist for the next bar from each of the profiles."""
for profile in self.profile_manager.profiles:
tmp_playlist = profile.get_playlist(chord)
self.playlist = self.merge_playlists(self.playlist, tmp_playlist)
return self.playlist
def merge_playlists(self, playlist1, playlist2):
"""Merges two playlists and returns them in one."""
for index, item in enumerate(playlist2):
playlist1[index].append(item)
return playlist1
def send_midi_notes(self, frame):
"""Sends the individual MIDI notes of the current frame to Midi class."""
for note in self.playlist[frame]:
if note is not "0":
channel, note, length, velocity = self.decode(note)
self.midi.play_note(channel, note, length, velocity)
def decode(self, note):
"""Decodes a note.
@type note: str in format: CHN-NOTE-LEN-VEL eg. 1-50-16-65
@rtype: int, int, int, int
"""
parts = note.split("-")
return int(parts[0]), int(parts[1]), int(parts[2]), int(parts[3])
def get_empty_playlist(self):
"""Returns an empty list of lists corresponding to the bar_division value."""
return [[] for i in range(self.bar_division)]