1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
import mido
from . import handlers
from .solo_tool import SoloTool
class MidiWrapper:
def __init__(self):
self._inPort = None
self._outPort = None
def connect(self, deviceName, callback):
if self._inPort is None and self._outPort is None:
self._inPort = mido.open_input(deviceName)
self._inPort.callback = callback
self._outPort = mido.open_output(deviceName)
def disconnect(self):
if self._inPort is not None:
self._inPort.close()
self._inPort = None
if self._outPort is not None:
self._outPort.reset()
self._outPort.close()
self._outPort = None
def sendNoteOn(self, note, velocity, channel):
if self._outPort is not None:
msg = mido.Message("note_on", channel=channel, velocity=velocity, note=note)
self._outPort.send(msg)
class LaunchpadMiniController:
DEVICE_NAME = "Launchpad Mini MIDI 1"
LIGHT_CONTROL_CHANNEL = 0
LED_GREEN = 124
LED_YELLOW = 126
LED_RED = 3
LED_OFF = 0
BUTTON_MATRIX = [[x for x in range(y * 16, y * 16 + 8)] for y in range(0,8)] # address as [row][col]
MIN_PLAYBACK_RATE = 0.5
MAX_PLAYBACK_RATE = 1.2
PLAYBACK_RATE_STEP = 0.1
MIN_PLAYBACK_VOLUME = 0.5
MAX_PLAYBACK_VOLUME = 1.2
PLAYBACK_VOLUME_STEP = 0.1
def __init__(self, soloTool: SoloTool, midiWrapperOverride=None):
self._soloTool = soloTool
if midiWrapperOverride is not None:
self._midiWrapper = midiWrapperOverride
else:
self._midiWrapper = MidiWrapper()
self._registerHandlers()
self._soloTool.registerPlayingStateCallback(self._updatePlayPauseButton)
self._soloTool.registerVolumeCallback(self._updateVolumeRow)
self._soloTool.registerRateCallback(self._updateRateRow)
def _registerHandlers(self):
self._handlers = {
96 : handlers.seekAbsolute(self._soloTool, 0.0),
114 : self._soloTool.jump,
112 : handlers.playPause(self._soloTool),
118 : handlers.keyPointRelative(self._soloTool, -1),
119 : handlers.keyPointRelative(self._soloTool, 1),
117 : handlers.positionToKeyPoint(self._soloTool),
48 : handlers.songRelative(self._soloTool, -1),
49 : handlers.seekRelative(self._soloTool, -0.25),
50 : handlers.seekRelative(self._soloTool, -0.05),
51 : handlers.seekRelative(self._soloTool, -0.01),
52 : handlers.seekRelative(self._soloTool, 0.01),
53 : handlers.seekRelative(self._soloTool, 0.05),
54 : handlers.seekRelative(self._soloTool, 0.25),
55 : handlers.songRelative(self._soloTool, 1),
}
for i in range(0, 8):
volume = round(LaunchpadMiniController.MIN_PLAYBACK_VOLUME + LaunchpadMiniController.PLAYBACK_VOLUME_STEP * i, 1)
self._handlers[i] = handlers.volumeAbsolute(self._soloTool, volume)
for i, button in enumerate(range(16, 24)):
rate = round(LaunchpadMiniController.MIN_PLAYBACK_RATE + LaunchpadMiniController.PLAYBACK_RATE_STEP * i, 1)
self._handlers[button] = handlers.rateAbsolute(self._soloTool, rate)
def connect(self):
self._midiWrapper.connect(LaunchpadMiniController.DEVICE_NAME, self._callback)
self._initialiseButtonLEDs()
def disconnect(self):
self._setAllLEDs(LaunchpadMiniController.LED_OFF)
self._midiWrapper.disconnect()
def _callback(self, msg):
if msg.type != "note_on" or msg.velocity < 127:
return
if msg.note in self._handlers:
handler = self._handlers[msg.note]()
def _updatePlayPauseButton(self, playing):
if playing:
self._setButtonLED(7, 0, LaunchpadMiniController.LED_GREEN)
else:
self._setButtonLED(7, 0, LaunchpadMiniController.LED_YELLOW)
def _updateVolumeRow(self, volume):
t1 = int(round(volume / LaunchpadMiniController.PLAYBACK_VOLUME_STEP, 1))
t2 = int(round(LaunchpadMiniController.MIN_PLAYBACK_VOLUME / LaunchpadMiniController.PLAYBACK_VOLUME_STEP, 1))
lastColumnLit = t1 - t2 + 1
self._lightRowUntilColumn(0, lastColumnLit, LaunchpadMiniController.LED_GREEN)
def _updateRateRow(self, rate):
t1 = int(round(rate / LaunchpadMiniController.PLAYBACK_RATE_STEP, 1))
t2 = int(round(LaunchpadMiniController.MIN_PLAYBACK_RATE / LaunchpadMiniController.PLAYBACK_RATE_STEP, 1))
lastColumnLit = t1 - t2 + 1
self._lightRowUntilColumn(1, lastColumnLit, LaunchpadMiniController.LED_YELLOW)
def _setButtonLED(self, row, col, colour):
self._midiWrapper.sendNoteOn(LaunchpadMiniController.BUTTON_MATRIX[row][col], colour, LaunchpadMiniController.LIGHT_CONTROL_CHANNEL)
def _lightRowUntilColumn(self, row, column, litColour):
colours = [litColour] * column + [LaunchpadMiniController.LED_OFF] * (8 - column)
for col in range(0, 8):
self._setButtonLED(row, col, colours[col])
def _setAllLEDs(self, colour):
for row in range(0, 8):
for col in range(0, 8):
self._setButtonLED(row, col, colour)
def _initialiseButtonLEDs(self):
self._setAllLEDs(LaunchpadMiniController.LED_OFF)
# volume buttons
self._updateVolumeRow(self._soloTool.volume)
# playback rate buttons
self._updateRateRow(self._soloTool.rate)
# playback control
self._setButtonLED(6, 0, LaunchpadMiniController.LED_YELLOW)
self._updatePlayPauseButton(self._soloTool.playing)
# Key point control
self._setButtonLED(7, 2, LaunchpadMiniController.LED_YELLOW)
self._setButtonLED(7, 6, LaunchpadMiniController.LED_RED)
self._setButtonLED(7, 7, LaunchpadMiniController.LED_GREEN)
self._setButtonLED(7, 5, LaunchpadMiniController.LED_YELLOW)
# Song control
self._setButtonLED(3, 0, LaunchpadMiniController.LED_RED)
self._setButtonLED(3, 1, LaunchpadMiniController.LED_RED)
self._setButtonLED(3, 2, LaunchpadMiniController.LED_RED)
self._setButtonLED(3, 3, LaunchpadMiniController.LED_RED)
self._setButtonLED(3, 4, LaunchpadMiniController.LED_GREEN)
self._setButtonLED(3, 5, LaunchpadMiniController.LED_GREEN)
self._setButtonLED(3, 6, LaunchpadMiniController.LED_GREEN)
self._setButtonLED(3, 7, LaunchpadMiniController.LED_GREEN)
|
