midizap/examples/APCmini.midizaprc

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# Mackie emulation for the AKAI APCmini
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# Copyright (c) 2018 Albert Graef <aggraef@gmail.com>
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice and
# this notice are preserved. This file is offered as-is, without any
# warranty.
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JACK_NAME "midizap-APCmini"
JACK_PORTS 2
# This turns the APCmini into a Mackie-compatible controller, so that it can
# be used with Linux DAW programs like Ardour. The emulation is complicated
# by the APCmini having no encoders, no motorized faders, and not nearly as
# many dedicated buttons as a Mackie device. But it offers enough controls to
# be usable as a basic DAW controller. I tested it with Ardour.
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# SETUP: In Ardour, enable the Mackie control surface, then connect Ardour's
# Mackie control ports to midizap's midi_out and midi_in2 ports, and the
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# APCmini to midizap's midi_in and midi_out2 ports.
# PROTOCOL DOCUMENTATION: The Mackie protocol is fairly ubiquitous, but since
# manufacturers can't be bothered to properly *document* their stuff these
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# days, we have to rely on volunteers who do their work using some reverse
# engineering. Here are the links that I found most useful:
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# http://www.budgetfeatures.com/XctlDOC/Xctl Protocol for X-Touch V1.0.pdf
# (This chart really is a piece of art. It's actually about the Behringer
# X-Touch, but since that device is Mackie-compatible, there's a wealth of
# useful information in there; just ignore the bits which pertain to Xctl.)
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# There's another fairly comprehensive one here (lacks the feedback messages,
# though):
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# http://www.jjlee.com/qlab/Mackie Control MIDI Map.pdf
# Information about the APCmini can be found in the Akai forums here:
# http://community.akaipro.com/akai_professional/topics/midi-information-for-apc-mini
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[MIDI]
# The APCmini's dedicated shift key is used to provide alternative functions
# to some of the buttons and the faders.
D8 SHIFT RELEASE SHIFT
# transport (assigned to the topmost 5 "scene launch" buttons on the right)
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A#6 A7 # Stop
B6 A#7 # Play
C7 B7 # Rec
#C7 C#7 # Cycle
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C#7 G7 # Rew
D7 G#7 # FFwd
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# the next three buttons below are used for the MC shift keys
# NOTE: The MC actually has four shift keys, so one has to go. You may want
# to rearrange these as needed.
D#7 A#5 # Shift
E7 B5 # Control
F7 C6 # Option
#F7 C#6 # Alt/Cmd
# shifted "scene launch" buttons
# We assign these to the function keys F1..F8 here, but of course you can
# remap these as needed.
^A#6 F#4
^B6 G4
^C7 G#4
^C#7 A4
^D7 A#4
^D#7 B4
^E7 C5
^F7 C#5
# bottom 3x8 grid: mute/solo/rec
# NOTE: Incidentally, these happen to be identical to corresponding MC input.
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# rec (bottom row of the grid)
C0 C0
C#0 C#0
D0 D0
D#0 D#0
E0 E0
F0 F0
F#0 F#0
G0 G0
# solo (next row above)
G#0 G#0
A0 A0
A#0 A#0
B0 B0
C1 C1
C#1 C#1
D1 D1
D#1 D#1
# mute (next row above)
E1 E1
F1 F1
F#1 F#1
G1 G1
G#1 G#1
A1 A1
A#1 A#1
B1 B1
# track select (bottom row right above the faders)
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E5 C2
F5 C#2
F#5 D2
G5 D#2
G#5 E2
A5 F2
A#5 F#2
B5 G2
# shifted bottom row
# We have these assigned to the bank/channel and track/pan/send/instr controls,
# but you may want to remap some or all of these as needed.
^E5 A#3 # Bank Left
^F5 B3 # Bank Right
^F#5 C4 # Channel Left
^G5 C#4 # Channel Right
# NOTE: Only Pan and Send appear to be supported in Ardour.
^G#5 E3 # Track (Volume)
^A5 F#3 # Pan
^A#5 F3 # Send
^B5 A3 # Instr (Device)
# faders (MC uses pitch bends here, use 129 as step size to get full range)
CC48[] PB[129]-1
CC49[] PB[129]-2
CC50[] PB[129]-3
CC51[] PB[129]-4
CC52[] PB[129]-5
CC53[] PB[129]-6
CC54[] PB[129]-7
CC55[] PB[129]-8
# master fader
CC56[] PB[129]-9
# faders become encoders when shifted (CC16..CC23, incremental mode)
^CC48= CC16~
^CC49= CC17~
^CC50= CC18~
^CC51= CC19~
^CC52= CC20~
^CC53= CC21~
^CC54= CC22~
^CC55= CC23~
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# feedback section ########################################################
[MIDI2]
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# transport (will light up in green)
A7 A#6 $M0 # reset all meters, see "meter feedback" below
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A#7 B6
B7 C7[2] # Rec, blinks when engaged
#C#7 C7 # Cycle
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G7 C#7
G#7 D7
# Feedback for the MC shift keys. We've disabled this by default since it
# doesn't add much value and clobbers some of the blinkenlights below.
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#A#5 D#7
#B5 E7
#C6 F7
# Blinkenlights galore! The Mackie protocol provides us with both time and
# meter data for which we provide some translations here which make various
# LEDs light up in different colors.
# Meter feedback: Each meter value is sent as a channel pressure message (on
# the first MIDI channel) with the mixer channel index 0..7 in the hi- and the
# meter value in the lo-nibble of the velocity value. On a real MCP device
# like the X-Touch, the meters have 7 segments (4 green, 3 orange, and 1 red),
# but the actual range of the meter values seems to be more like 0..13 (at
# least that's what Ardour outputs, YMMV). Note that we only use the upper
# 5x8 part of the grid here, in order not to clobber the three rows at the
# bottom with the rec/solo/mute buttons, so we have to squash the meter values
# into those 5 LEDs per strip in some way. The following setup with 3 green,
# 1 yellow and 1 red LED seems to work reasonably well, but you might want to
# adjust the colors and the mapping of the meter values to your liking.
CP[16] C2{0,1} G#2{0:3,1} E3{0:6,1} C4{0:9,5} G#4{0:12,3}
# NOTE: We only report the values as we receive them here, there's no
# automatic decay of the meters like with real Mackie hardware. Thus we
# explicitly reset all meters when transport stops below. (Ardour at least
# does *not* do that automatically.)
M0[1] $CP{0} $CP{16} $CP{32} $CP{48} $CP{64} $CP{80} $CP{96} $CP{112}
# This decodes the least significant digit in the time display (CC69) to count
# off time on the 4 bottommost scene launch buttons. Note that the digits are
# encoded in ASCII here, therefore the copious amount of zeros in the value
# lists below to skip over all the non-digit characters at the beginning of
# the ASCII table.
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CC69[] F7{0:49,1,0} E7{0:50,1,0} Eb7{0:51,1,0} D7{0:52,1,0}
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# no feedback for faders (faders aren't motorized)
# NOTE: Feedback for rec/solo/mute/select also needs to be recognized in shift
# mode, so that the (shifted) bank/channel left/right keys work as expected.
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# rec: color = red (vel. 3)
C0 C0[3]
C#0 C#0[3]
D0 D0[3]
D#0 D#0[3]
E0 E0[3]
F0 F0[3]
F#0 F#0[3]
G0 G0[3]
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# solo: color = green (vel. 1)
G#0 G#0[1]
A0 A0[1]
A#0 A#0[1]
B0 B0[1]
C1 C1[1]
C#1 C#1[1]
D1 D1[1]
D#1 D#1[1]
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# mute: color = yellow (vel. 5)
E1 E1[5]
F1 F1[5]
F#1 F#1[5]
G1 G1[5]
G#1 G#1[5]
A1 A1[5]
A#1 A#1[5]
B1 B1[5]
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# select (will light up in red)
# NOTE: Ardour apparently doesn't update these when changing banks.
C2 E5
C#2 F5
D2 F#5
D#2 G5
E2 G#5
F2 A5
F#2 A#5
G2 B5