def __call__(self, event, data=None):
message, deltatime = event
# Get buttons on the grid
if message[0] == 144 and message[2] == 127:
note_num = message[1]
col = note_num % 16
row = note_num / 16
if col == 8:
# Mute the sequencer in this row
for sm in sequencermodel.get_current_seq_page():
if sm.in_range(row):
sm.mute_toggle()
else:
for sm in sequencermodel.get_current_seq_page():
if sm.in_range(row):
sm.toggle(8*row + col)
# Get transport buttons
elif message[0] == 176 and message[2] == 127:
cc_num = message[1]
if cc_num == 104:
# Up arrow button pressed
sequencermodel.increase_velocity()
elif cc_num == 105:
# Down arrow button pressed
sequencermodel.decrease_velocity()
elif cc_num == 107:
# Right arrow button pressed
sequencermodel.toggle_playing()
elif cc_num == 109:
# User 1 button pressed
sequencermodel.select_seq_page(0)
elif cc_num == 110:
# User 2 button pressed
sequencermodel.select_seq_page(1)
elif cc_num == 111:
# Mixer button pressed
sequencermodel.toggle_randomize()
midi_input_controller = MidiInputController()
midi_in.set_callback(midi_input_controller)
sequencermodel.init_view()
# Set the period in seconds for one sixteenth note
period_sec = 60.0/constants.INTERNAL_BPM / 4
step = 0
if not constants.USE_EXT_CLOCK:
while True:
if sequencermodel.sequencer_playing:
# Step through each button at the specified bpm
for sm in sequencermodel.get_current_seq_page():
sm.start_note(step)
time.sleep(constants.NOTE_LEN_SEC)
for sm in sequencermodel.get_current_seq_page():
sm.stop_note()
step = (step + 1) % constants.MAX_NUM_STEPS
time.sleep(period_sec - constants.NOTE_LEN_SEC)
else:
step = 0
time.sleep(0.1)
elif constants.USE_EXT_CLOCK: