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// ****************************************************************************
// * Mixxx mapping script file for the Behringer CMD Studio 4a.
// * Author: Craig Easton
// * Version 1.4 (Jan 2016)
// * Forum: http://www.mixxx.org/forums/viewtopic.php?f=7&t=7868
// * Wiki: http://www.mixxx.org/wiki/doku.php/behringer_cmd_studio_4a
// ****************************************************************************
////////////////////////////////////////////////////////////////////////
// JSHint configuration //
////////////////////////////////////////////////////////////////////////
/* global engine */
/* global script */
/* global print */
/* global midi */
////////////////////////////////////////////////////////////////////////
// Master function definition.
function BehringerCMDStudio4a() {}
// ***************************** Global Vars **********************************
// Shift/mode state variables.
BehringerCMDStudio4a.delButtonState = [false,false,false,false];
BehringerCMDStudio4a.scratchButtonState = [false,false,false,false];
// Button push/release state variables.
BehringerCMDStudio4a.pitchPushed = [[false,false,false,false], [false,false,false,false]];
BehringerCMDStudio4a.delPushed = false;
BehringerCMDStudio4a.delShiftUsed = false;
BehringerCMDStudio4a.fxAssignPushed = false;
BehringerCMDStudio4a.fxAssignShiftUsed = false;
BehringerCMDStudio4a.fxAssignLastGroup = "";
// ************************ Initialisation stuff. *****************************
BehringerCMDStudio4a.vuMeterUpdate = function (value, group, control){
value = (value*15)+48;
switch(control) {
case "VuMeterL":
midi.sendShortMsg(0xB0, 0x7E, value);
break;
case "VuMeterR":
midi.sendShortMsg(0xB0, 0x7F, value);
break;
}
}
BehringerCMDStudio4a.initLEDs = function () {
// (re)Initialise any LEDs that are direcctly controlled by this script.
// DEL buttons (one for each virtual deck).
midi.sendShortMsg(0x90, 0x2A, 0x00);
midi.sendShortMsg(0x91, 0x4A, 0x00);
midi.sendShortMsg(0x92, 0x2A, 0x00);
midi.sendShortMsg(0x93, 0x4A, 0x00);
// Scratch buttons (one for each virtual deck).
midi.sendShortMsg(0x90, 0x16, 0x00);
midi.sendShortMsg(0x91, 0x36, 0x00);
midi.sendShortMsg(0x92, 0x16, 0x00);
midi.sendShortMsg(0x93, 0x36, 0x00);
}
BehringerCMDStudio4a.init = function () {
// Initialise anything that might not be in the correct state.
BehringerCMDStudio4a.initLEDs();
// Connect the VUMeters
engine.connectControl("[Master]","VuMeterL","BehringerCMDStudio4a.vuMeterUpdate");
engine.connectControl("[Master]","VuMeterR","BehringerCMDStudio4a.vuMeterUpdate");
}
BehringerCMDStudio4a.shutdown = function() {
// Leave the deck in a properly initialised state.
BehringerCMDStudio4a.initLEDs();
// Disconnect the VUMeters.
// Maybe not! It seems you don't have to do this even though the connection
// in done in init(), in fact if you try it throws an error.
// engine.connectControl("[Master]","VuMeterL","BehringerCMDStudio4a.vuMeterUpdate",true);
// engine.connectControl("[Master]","VuMeterR","BehringerCMDStudio4a.vuMeterUpdate",true);
}
// *************************** Control Stuff. *********************************
// The code below is primarily "shift/mode" key functionality as there is no
// native support for this in Mixxx at the moment.
// I suspect that the vast majority of controller mappings could be completed
// with little or no scripting if Mixxx supported shift/mode buttons in the
// XML (together with standard wheel/scratching functionality).
// Function to deal with the DEL "shift/mode" buttons.
BehringerCMDStudio4a.del = function (channel, control, value, status, group) {
if (value == 127) {
// Button pushed.
BehringerCMDStudio4a.delPushed = true;
BehringerCMDStudio4a.delShiftUsed = false;
} else {
// Button released.
BehringerCMDStudio4a.delPushed = false;
// Only toggle the DEL-mode if the "shift" function wasn't used.
if (!BehringerCMDStudio4a.delShiftUsed) {
BehringerCMDStudio4a.delButtonState[channel] = !BehringerCMDStudio4a.delButtonState[channel];
midi.sendShortMsg(0x90 + channel, control, BehringerCMDStudio4a.delButtonState[channel] ? 0x01 : 0x00);
}
}
}
// Function to deal with the play buttons, (because they have a DEL-mode behaviour).
BehringerCMDStudio4a.play = function (channel, control, value, status, group) {
if (BehringerCMDStudio4a.delButtonState[channel]) {
// DEL-mode is active, do reverse-roll (slip).
engine.setValue(group, "reverseroll", (value == 127) ? 1 : 0);
} else {
// DEL-mode is not active, just toggle play (on push only).
if (value == 127) {
script.toggleControl(group,"play");
}
}
}
// Function to deal with the cue buttons, (because they have a DEL-mode behaviour).
BehringerCMDStudio4a.cue = function (channel, control, value, status, group) {
if (BehringerCMDStudio4a.delButtonState[channel]) {
// DEL-mode is active, do reverse play.
engine.setValue(group, "reverse", (value == 127) ? 1 : 0);
} else {
// DEL-mode is not active so just cue.
engine.setValue(group, "cue_default", (value == 127) ? 1 : 0);
}
}
// Function to deal with the scratch mode buttons.
BehringerCMDStudio4a.scratch = function (channel, control, value, status, group) {
BehringerCMDStudio4a.scratchButtonState[channel] = !BehringerCMDStudio4a.scratchButtonState[channel];
midi.sendShortMsg(status, control, BehringerCMDStudio4a.scratchButtonState[channel] ? 0x01 : 0x00);
}
// Function to deal with the FX Assign buttons, (because they also act as "shift" buttons).
BehringerCMDStudio4a.fxAssign = function (channel, control, value, status, group) {
// FX Assign buttons start at 0x52.
var fxAssignButton = (control - 0x52) & 1; // Either 0 or 1 depending on button (1 or 2).
if (value == 127) {
// Button pushed.
BehringerCMDStudio4a.fxAssignPushed = true;
BehringerCMDStudio4a.fxAssignShiftUsed = false;
BehringerCMDStudio4a.fxAssignLastGroup = group;
}
else
{
// Button released.
BehringerCMDStudio4a.fxAssignPushed = false;
// Only toggle the effect on release if the "shift" function wasn't used.
if (!BehringerCMDStudio4a.fxAssignShiftUsed) {
script.toggleControl(group,"group_[Channel"+(channel+1)+"]_enable");
}
}
}
// Function to deal with the browse left/right buttons, (because they have an "FX Assign mode" behaviour).
BehringerCMDStudio4a.browseLR = function (channel, control, value, status, group) {
if (BehringerCMDStudio4a.fxAssignPushed) {
BehringerCMDStudio4a.fxAssignShiftUsed = true;
if (control == 0x2) {
// Left.
engine.setValue(BehringerCMDStudio4a.fxAssignLastGroup,"prev_chain", 1);
} else {
// Right.
engine.setValue(BehringerCMDStudio4a.fxAssignLastGroup,"next_chain", 1);
}
} else {
if (control == 0x2) {
// Left.
engine.setValue(group, "SelectPrevPlaylist",1)
} else {
// Right.
engine.setValue(group, "SelectNextPlaylist",1)
}
}
}
// Functions to deal with the hot-cue buttons, (because they have a DEL-mode behaviour).
BehringerCMDStudio4a.hotcue = function (channel, control, value, status, group) {
// Translate the button to the actual hotcue.
var hotcue = control-0x21; // Hotcue buttons on left deck go from 0x22 to 0x29
if (hotcue>8) {
// Right deck, buttons are 0x20 higher so we need to compensate.
hotcue = hotcue-0x20;
}
if (BehringerCMDStudio4a.delPushed) {
// DEL button is being held so delete the hotcue.
engine.setValue(group, "hotcue_"+hotcue+"_clear", 1);
BehringerCMDStudio4a.delShiftUsed = true;
} else {
// DEL button is not being held down.
if (BehringerCMDStudio4a.delButtonState[channel]) {
// DEL-mode is active, lets do auto-loops.
engine.setValue(group, "beatloop_"+(1/8)*Math.pow(2,hotcue-1)+"_toggle", 1);
if (value == 0) {
// Button is being released. Disable then re-enable slip if it
// is active. This "re-syncs" the playback after every
// auto-loop in slip-mode which is a nice effect and probably
// what you want most of the time if slip is on.
if (engine.getValue(group, "slip_enabled") == 1) {
engine.setValue(group, "slip_enabled", 0);
// It seems we can't just flip a param off and on in the
// same call! Since we've just turned slip off, I can't now
// turn it on directly here, the only work-around I could
// think of was to create a (very short) timed call-back
// to turn it off!
// Raised bug about this:
// https://bugs.launchpad.net/mixxx/+bug/1538200
// Changed timer from 50 to 100 after the pathology of this
// bug was explined in the bug report.
engine.beginTimer(100, function() { engine.setValue(group, "slip_enabled", 1); }, 1);
}
}
} else {
// DEL-mode is not active so do the set/jump-to hotcue function as normal.
engine.setValue(group, "hotcue_"+hotcue+"_activate", (value == 127) ? 1 : 0);
}
}
}
// Functions to deal with the pitch inc/dec buttons, (because they have a DEL-mode behaviour).
BehringerCMDStudio4a.pitch = function (channel, control, value, status, group) {
// Work out the direction.
var direction = ((control & 0x01) == 0) ? "down" : "up";
// Work out the type (and join) by looking at the DEL button state.
var type = BehringerCMDStudio4a.delButtonState[channel] ? "pitch" : "rate";
var join = BehringerCMDStudio4a.delButtonState[channel] ? "" : "_perm";
// Pushed or released?
if (value
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