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connection.py
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connection.py
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import pygame, pygame.midi
from prettytable import PrettyTable
from pynput.keyboard import Key, Controller
from exceptions import *
from scales import *
class Shawzin:
def __init__(self):
self.scale_list = Scales.scale_list
self.current_scale_index = 0
self.current_scale = self.scale_list[self.current_scale_index]
self.keyboard_controller = Controller()
def next_scale(self):
# Iterating to the next scale, rolling back to zero if reaching out of bounds of the list
if self.current_scale_index + 1 >= len(self.scale_list):
self.current_scale_index = 0
self.current_scale = self.scale_list[self.current_scale_index]
else:
self.current_scale_index += 1
self.current_scale = self.scale_list[self.current_scale_index]
# Changing scale in warframe
self.keyboard_controller.press(Key.tab)
self.keyboard_controller.release(Key.tab)
self.get_scale_table()
def get_scale_table(self):
scale_table = PrettyTable()
scale_table.field_names = [
'NoFret1',
'NoFret2',
'NoFret3',
'SkyFret1',
'SkyFret2',
'SkyFret3',
'EarthFret1',
'EarthFret2',
'EarthFret3',
'WaterFret1',
'WaterFret2',
'WaterFret3'
]
scale_table.add_row([
self.current_scale.get('NoFret1'),
self.current_scale.get('NoFret2'),
self.current_scale.get('NoFret3'),
self.current_scale.get('SkyFret1'),
self.current_scale.get('SkyFret2'),
self.current_scale.get('SkyFret3'),
self.current_scale.get('EarthFret1'),
self.current_scale.get('EarthFret2'),
self.current_scale.get('EarthFret3'),
self.current_scale.get('WaterFret1'),
self.current_scale.get('WaterFret2'),
self.current_scale.get('WaterFret3'),
])
print(self.current_scale.get('Scale'))
print(scale_table)
print()
def get_shawzin_strum(self, ansi_note):
for key, value in self.current_scale.items():
if ansi_note == value:
return key
def play_note(self, ansi_note, io, whammy):
# Method to play the fret-string combo on the keyboard
def strum_pattern(fret, string):
# NoFret strum
if fret == None:
# Key PRESS
if io:
# Is a whammy
if whammy:
self.keyboard_controller.press(string)
self.keyboard_controller.press(Key.space)
# Is not a whammy key press
else:
self.keyboard_controller.press(string)
# Key realease
else:
self.keyboard_controller.release(string)
self.keyboard_controller.release(Key.space)
# Non NoFret strumming
else:
# Key press
if io:
if whammy:
self.keyboard_controller.press(fret)
self.keyboard_controller.press(string)
self.keyboard_controller.press(Key.space)
else:
self.keyboard_controller.press(fret)
self.keyboard_controller.press(string)
# Key release
else:
self.keyboard_controller.release(fret)
self.keyboard_controller.release(string)
self.keyboard_controller.release(Key.space)
# Getting the fret-string name (ie. WaterFret2) from the note played
strum = self.get_shawzin_strum(ansi_note)
# Determining which fret-string pattern to play and passing it to method
if strum == 'NoFret1':
strum_pattern(None, '1')
elif strum == 'NoFret2':
strum_pattern(None, '2')
elif strum == 'NoFret3':
strum_pattern(None, '3')
elif strum == 'SkyFret1':
strum_pattern(Key.left, '1')
elif strum == 'SkyFret2':
strum_pattern(Key.left, '2')
elif strum == 'SkyFret3':
strum_pattern(Key.left, '3')
elif strum == 'EarthFret1':
strum_pattern(Key.down, '1')
elif strum == 'EarthFret2':
strum_pattern(Key.down, '2')
elif strum == 'EarthFret3':
strum_pattern(Key.down, '3')
elif strum == 'WaterFret1':
strum_pattern(Key.right, '1')
elif strum == 'WaterFret2':
strum_pattern(Key.right, '2')
elif strum == 'WaterFret3':
strum_pattern(Key.right, '3')
class MIDI_Event:
'''
MIDI commands:
176 - Button press (velocity 127 for pressON, velocity 0 for pressOFF)
224 - Rotary (0 velocity for lowest, 127 velocity for highest. Some models will rest in center - velocity 64)
144 - Note press
128 - Note release
'''
def __init__(self, event):
self.command = event[0][0][0]
self.note = event[0][0][1]
self.ansi_note = pygame.midi.midi_to_ansi_note(self.note)
self.velocity = velocity = event[0][0][2] # I have no clue what this one is, or if it's the right name
self.etc = event[0][0][3]
self.clock = event[0][1]
def __str__(self):
return 'Command: {command}, Note: {note}, Velocity: {velocity}, ETC: {etc}, Clock: {clock}'.format(command = self.command, note = self.ansi_note, velocity = self.velocity, etc = self.etc, clock = self.clock)
def is_button(self):
if self.command == 176:
return True
else:
return False
def is_dial(self):
if self.command == 224:
return True
else:
return False
def is_note(self):
if self.command == 144 or self.command == 128:
return True
else:
return False
def compare_key(self, key):
if self.command == key.command and self.ansi_note == key.ansi_note:
return True
else:
return False
def device_select():
print('Finding devices...')
print()
# Discovering all midi devices
dev_list=[]
for n in range(pygame.midi.get_count()):
dev_list.append(pygame.midi.get_device_info(n))
# Printing out the list of input devices
count=0
for dev in dev_list:
dev_interface = dev[0]
dev_name = dev[1]
is_input = dev[2] # if true then it is an input
is_output = dev[3] # if true then it is an output
is_opened = dev[4] # if true then it is opened
dev_io=''
if is_input:
dev_io = 'INPUT Device'
elif is_output:
dev_io = 'OUTPUT Device'
else:
dev_i = 'INVALID Device'
print('{count}) {io}: {name}, interface: {interface}'.format(
count = count, io = dev_io, name = dev_name, interface = dev_interface))
count += 1
print()
# Asking user for desired device
loop = True
while loop:
try:
user_input = input('Select your input device: ')
# Test if NaN
float(user_input)
# Test if user input is within valid range
if int(user_input) < 0 or int(user_input) > len(dev_list) - 1:
raise InvalidRangeException
# Test if device is midi input
if dev_list[int(user_input)][3]:
raise NotInputDeviceException
# Breaking out of loop if all condition are met
loop=False
except (ValueError, InvalidRangeException, NotInputDeviceException) as e:
print('Please enter a valid selection')
print()
return int(user_input)
def setup_midi():
# Initialisation of midi device connection
pygame.midi.init()
dev = device_select()
midi_input = pygame.midi.Input(dev)
return midi_input
def capture_midi(connection):
isCaptured = False
while not isCaptured:
if connection.poll():
event = connection.read(1)
midi_event = MIDI_Event(event)
isCaptured = True
return midi_event
def keyboard_controls(connection):
# Asking user to make a MIDI input and capturing it as a returnable object
print()
print('Setting up midi keybinds...')
# Getting the keybind for the button to change musical scale
keybind_scale = None
found_scale_button = False
while not found_scale_button:
try:
print('Select non-note button on MIDI device for the music scale select button:')
midi_event = capture_midi(connection)
if midi_event.is_button():
print('Scale keybinding successful')
keybind_scale = midi_event
found_scale_button = True
else:
raise InvalidMidiRange
except (InvalidMidiRange):
print('Please enter a non-note button')
print()
# Getting the keybind for the whammy button
keybind_whammy = None
found_whammy = False
while not found_whammy:
try:
print('Select non-note button on MIDI device for the whammy:')
midi_event = capture_midi(connection)
if midi_event.is_dial() or midi_event.is_button():
print('Whammy keybind successful')
keybind_whammy = midi_event
found_whammy = True
else:
raise InvalidMidiRange
except (InvalidMidiRange):
print('Please enter a non-note dial')
print()
print('Setup complete')
print()
return (keybind_scale, keybind_whammy)
def watch_midi(connection, keybind_scale, keybind_whammy):
# Init of an instance of the shawin
shawzin = Shawzin()
# Displaying the initial scale table
shawzin.get_scale_table()
# Infinite loop to watch the midi input
whammy_event = False
while True:
# Waiting for a midi event
if connection.poll():
# Grabbing midi event
midi_event = MIDI_Event(connection.read(1))
# Checking what has been pressed
# Note press
if midi_event.is_note():
# When music note played, play corresponding shawzin strum pattern
# Note press
if midi_event.command == 144:
if whammy_event:
shawzin.play_note(midi_event.ansi_note, True, True)
whammy_event = False
else:
shawzin.play_note(midi_event.ansi_note, True, False)
whammy_event = False
# Note release
elif midi_event.command == 128:
shawzin.play_note(midi_event.ansi_note, False, False)
# Scale select button binding pressed
elif midi_event.compare_key(keybind_scale):
shawzin.next_scale()
# Whammy binding pressed
elif midi_event.compare_key(keybind_whammy):
whammy_event = True