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colourspace.js
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/* colourspace.js
* Colour Space (gamut) conversion web worker object for the LUTCalc Web App.
* 27th June December 2015
*
* LUTCalc generates 1D and 3D Lookup Tables (LUTs) for video cameras that shoot log gammas,
* principally the Sony CineAlta line.
*
* By Ben Turley, http://turley.tv
* First License: GPLv2
* Github: https://github.com/cameramanben/LUTCalc
*/
function LUTColourSpace() {
this.g = [];
this.csIn = [];
this.csOut = [];
this.csM = [];
this.CATs = new CSCAT();
this.sysCAT = 'CIECAT02';
this.sysCATIdx = this.CATs.modelIdx(this.sysCAT);
this.cat02 = new Float64Array([
0.7328, 0.4296,-0.1624,
-0.7036, 1.6975, 0.0061,
0.0030, 0.0136, 0.9834
]);
this.invCat02 = this.mInverse(this.cat02);
this.matList = [];
this.xyzMatrices();
this.system = this.g[this.sysIdx];
this.system.inv = this.mInverse(this.system.toXYZ);
this.y = new Float64Array([ 0.2126, 0.7152, 0.0722 ]);
this.systemMatrices();
this.setSaturated();
this.setYCoeffs();
this.nul = false;
this.isTrans = false;
this.ver = 0;
this.curIn = 0;
this.curOut = 0;
this.planck = new Planck();
this.system.CCT = this.planck.getCCT(this.system.white);
this.system.Dxy = this.planck.getDxy(this.system.white,this.system.CCT);
this.wb = new CSWB(this.system.white,this.system.toXYZ, this.planck, this.CATs);
this.curHG = 0;
this.hgLow = 0;
this.hgHigh = 0;
this.hgLin = true;
this.hgLowStop = 0;
this.hgHighStop = 0;
this.LA = 0;
this.pass = 0;
this.inList = [];
this.outList = [];
this.laList = [];
this.csInSub = [];
this.csOutSub = [];
this.csLASub = [];
if ((new Int8Array(new Int16Array([1]).buffer)[0]) > 0) {
this.isLE = true;
} else {
this.isLE = false;
}
this.asc = new Float64Array([
1,1,1, // s - Slope / Gain
0,0,0, // o - Offset / Lift
1,1,1, // p - Power / Gamma
1 // sat - Saturation
]);
this.initPSSTCDL();
this.fcVals = new Float64Array([
0.00078125,// Purple - Black Clip (18%-8 stops)
0.002915728,// Blue - Just Above Black Clip (18%-6.1 stops)
0.174110113,// Green - 18%-0.2 Stop
0.229739671,// Green - 18%+0.2 stop
0.354307008,// Pink - One Stop Over 18%-0.175 Stop
0.451585762,// Pink - One Stop Over 18%+0.175 Stop
0.885767519,// Orange - 90% White-0.175 Stop
1.128964405,// Orange - 90% White+0.175 Stop
10.39683067,// Yellow - White Clip (Sony F55,F5,FS7)-0.3 Stop
12.36398501 // Red - White Clip (Sony F55,F5,FS7) 18%+6 stops
]);
this.doHG = false;
this.doWB = false;
this.doASCCDL = false;
this.doPSSTCDL = false;
this.doFC = false;
this.loadColourSpaces();
this.buildColourSquare();
this.buildMultiColours();
}
// Prepare colour spaces
LUTColourSpace.prototype.subIdx = function(cat) {
switch (cat) {
case 'Sony': return 0;
case 'Arri': return 1;
case 'Canon': return 2;
case 'Panasonic': return 3;
case 'RED': return 4;
case 'GoPro': return 5;
case 'Adobe': return 6;
case 'Rec709': return 7;
case 'Rec2020': return 8;
case 'P3': return 9;
case 'Wide Gamut': return 10;
case 'ACES': return 11;
case 'All': return 12;
}
return false;
};
LUTColourSpace.prototype.loadColourSpaces = function() {
this.subNames = [ 'Sony',
'Arri',
'Canon',
'Panasonic',
'RED',
'GoPro',
'Adobe',
'Rec709',
'Rec2020',
'P3',
'Wide Gamut',
'ACES',
'All'
];
this.SG3C = this.csIn.length;
this.csIn.push(this.toSys('Sony S-Gamut3.cine'));
this.csInSub.push([this.subIdx('Sony'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('Sony S-Gamut3'));
this.csInSub.push([this.subIdx('Sony'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('Sony S-Gamut'));
this.csInSub.push([this.subIdx('Sony'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('Alexa Wide Gamut'));
this.csInSub.push([this.subIdx('Arri'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('Canon Cinema Gamut'));
this.csInSub.push([this.subIdx('Canon'),this.subIdx('Wide Gamut')]);
this.csIn.push(new CSCanonIDT('Canon CP IDT (Daylight)', true, this.toSys('ACES AP0').m, this.system.white.buffer.slice(0)));
this.csInSub.push([this.subIdx('Canon'),this.subIdx('Rec709')]);
this.csIn.push(new CSCanonIDT('Canon CP IDT (Tungsten)', false, this.toSys('ACES AP0').m, this.system.white.buffer.slice(0)));
this.csInSub.push([this.subIdx('Canon'),this.subIdx('Rec709')]);
this.csIn.push(this.toSys('Panasonic V-Gamut'));
this.csInSub.push([this.subIdx('Panasonic'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('DRAGONColor'));
this.csInSub.push([this.subIdx('RED')]);
this.csIn.push(this.toSys('DRAGONColor2'));
this.csInSub.push([this.subIdx('RED')]);
this.csIn.push(this.toSys('REDColor'));
this.csInSub.push([this.subIdx('RED')]);
this.csIn.push(this.toSys('REDColor2'));
this.csInSub.push([this.subIdx('RED')]);
this.csIn.push(this.toSys('REDColor3'));
this.csInSub.push([this.subIdx('RED')]);
this.csIn.push(this.toSys('REDColor4'));
this.csInSub.push([this.subIdx('RED')]);
this.csIn.push(this.toSys('Protune Native'));
this.csInSub.push([this.subIdx('GoPro'),this.subIdx('Wide Gamut')]);
this.rec709In = this.csIn.length;
this.csIn.push(this.toSys('Rec709'));
this.csInSub.push([this.subIdx('Rec709')]);
this.csIn.push(this.toSys('Rec2020'));
this.csInSub.push([this.subIdx('Rec2020'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('sRGB'));
this.csInSub.push([]);
this.csIn.push(this.toSys('ACES AP0'));
this.csInSub.push([this.subIdx('ACES'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('ACEScg AP1'));
this.csInSub.push([this.subIdx('ACES'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('XYZ'));
this.csInSub.push([this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('DCI-P3'));
this.csInSub.push([this.subIdx('P3')]);
this.csIn.push(this.toSys('DCI-P3D60'));
this.csInSub.push([this.subIdx('P3')]);
this.csIn.push(this.toSys('Canon DCI-P3+'));
this.csInSub.push([this.subIdx('Canon'),this.subIdx('P3')]);
this.csIn.push(this.toSys('Adobe RGB'));
this.csInSub.push([this.subIdx('Adobe')]);
this.csIn.push(this.toSys('Adobe Wide Gamut RGB'));
this.csInSub.push([this.subIdx('Adobe'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('ProPhoto RGB'));
this.csInSub.push([this.subIdx('Wide Gamut')]);
this.custIn = this.csIn.length;
this.csIn.push(this.toSys('Custom In'));
this.csInSub.push([0,1,2,3,4,5,6,7,8,9,10,11,12]);
this.csIn.push(new CSMatrix('Passthrough', new Float64Array([1,0,0, 0,1,0, 0,0,1]), this.system.white.buffer.slice(0)));
this.csInSub.push([0,1,2,3,4,5,6,7,8,9,10,11,12]);
this.csOut.push(this.fromSys('Sony S-Gamut3.cine'));
this.csOutSub.push([this.subIdx('Sony'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('Sony S-Gamut3'));
this.csOutSub.push([this.subIdx('Sony'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('Sony S-Gamut'));
this.csOutSub.push([this.subIdx('Sony'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('Alexa Wide Gamut'));
this.csOutSub.push([this.subIdx('Arri'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('Canon Cinema Gamut'));
this.csOutSub.push([this.subIdx('Canon'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('Panasonic V-Gamut'));
this.csOutSub.push([this.subIdx('Panasonic'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('DRAGONColor'));
this.csOutSub.push([this.subIdx('RED')]);
this.csOut.push(this.fromSys('DRAGONColor2'));
this.csOutSub.push([this.subIdx('RED')]);
this.csOut.push(this.fromSys('REDColor'));
this.csOutSub.push([this.subIdx('RED')]);
this.csOut.push(this.fromSys('REDColor2'));
this.csOutSub.push([this.subIdx('RED')]);
this.csOut.push(this.fromSys('REDColor3'));
this.csOutSub.push([this.subIdx('RED')]);
this.csOut.push(this.fromSys('REDColor4'));
this.csOutSub.push([this.subIdx('RED')]);
this.csOut.push(this.fromSys('Protune Native'));
this.csOutSub.push([this.subIdx('GoPro'),this.subIdx('Wide Gamut')]);
this.rec709Out = this.csIn.length;
this.csOut.push(this.fromSys('Rec709'));
this.csOutSub.push([this.subIdx('Rec709')]);
this.csOut.push(
this.fromSysTC('Alexa-X-2',
{
isOut: true,
linMatrix: this.matrixVals('Alexa Wide Gamut',false),
linY: this.getYCoeffs('Alexa Wide Gamut'),
logBase: new CSLogC(1600),
tc: new LUTSpline(new Float64Array([
-0.000242159,0.000242159,0.002966164,0.007787970,
0.018057211,0.042774540,0.095615536,0.180395906,
0.299169962,0.452321901,0.633391140,0.788816601,
0.892986853,0.951081756,0.975328639,0.985494457,
1
/*
0.000000000,0.000244609,0.002996164,0.007811365,0.018090643,0.042819458,0.095668875,0.180450053,
0.299217751,0.452358216,0.633413727,0.788828584,0.892992556,0.951084268,0.975329885,0.985495185,
1.000000000
*/
]).buffer,1,0),
tcMatrix: new Float64Array([
1.485007,-0.401216,-0.083791,
-0.033732, 1.282887,-0.249155,
0.010776,-0.122018, 1.111242
]),
cb: true,
sb: true,
wp: this.illuminant('d65')
},
new Float64Array([0.64,0.33, 0.30,0.60, 0.15,0.06]),
this.illuminant('d65')
)
);
this.csOutSub.push([this.subIdx('Arri'),this.subIdx('Rec709')]);
this.csOut.push(
this.fromSysLUT('LC709',
{
format: 'cube',
min: [0,0,0],
max: [1,1,1],
filename: 'LC709.labin',
le: this.isLE,
wp: this.illuminant('d65')
},
new Float64Array([0.64,0.33, 0.30,0.60, 0.15,0.06]),
this.illuminant('d65')
)
);
this.csOutSub.push([this.subIdx('Sony'),this.subIdx('Rec709')]);
this.csOut.push(
this.fromSysLUT('LC709A',
{
format: 'cube',
min: [0,0,0],
max: [1,1,1],
filename: 'LC709A.labin',
le: this.isLE,
wp: this.illuminant('d65')
},
new Float64Array([0.64,0.33, 0.30,0.60, 0.15,0.06]),
this.illuminant('d65')
)
);
this.csOutSub.push([this.subIdx('Sony'),this.subIdx('Rec709')]);
this.csOut.push(
this.fromSysLUT('Canon CP IDT (Daylight)',
{
format: 'cube',
min: [0,0,0],
max: [1,1,1],
filename: 'cpouttungsten.labin',
le: this.isLE,
wp: this.illuminant('d65')
},
new Float64Array([0.6509, 0.2827, 0.3177, 0.8953, 0.1289, -0.0468]),
this.illuminant('d65')
)
);
this.csOutSub.push([this.subIdx('Canon'),this.subIdx('Rec709')]);
this.csOut.push(
this.fromSysLUT('Canon CP IDT (Tungsten)',
{
format: 'cube',
min: [0,0,0],
max: [1,1,1],
filename: 'cpoutdaylight.labin',
le: this.isLE,
wp: this.illuminant('d65')
},
new Float64Array([0.6577, 0.2653, 0.3417, 1.0909, 0.1475, -0.0018]),
this.illuminant('d65')
)
);
this.csOutSub.push([this.subIdx('Canon'),this.subIdx('Rec709')]);
this.csOut.push(
this.fromSysLUT('Varicam V709',
{
format: 'cube',
min: [0,0,0],
max: [1,1,1],
filename: 'V709.labin',
le: this.isLE,
wp: this.illuminant('d65')
},
new Float64Array([0.64,0.33, 0.30,0.60, 0.15,0.06]),
this.illuminant('d65')
)
);
this.csOutSub.push([this.subIdx('Panasonic'),this.subIdx('Rec709')]);
this.csOut.push(this.fromSys('Rec2020'));
this.csOutSub.push([this.subIdx('Rec2020'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('sRGB'));
this.csOutSub.push([]);
this.csOut.push(this.fromSysMatrix('Luma B&W', new Float64Array([ this.y[0],this.y[1],this.y[2], this.y[0],this.y[1],this.y[2], this.y[0],this.y[1],this.y[2] ]), this.system.white.buffer.slice(0)));
this.csOutSub.push([]);
this.csOut.push(this.fromSys('ACES AP0'));
this.csOutSub.push([this.subIdx('ACES'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('ACEScg AP1'));
this.csOutSub.push([this.subIdx('ACES'),this.subIdx('Wide Gamut')]);
this.XYZOut = this.csOut.length;
this.csOut.push(this.fromSys('XYZ'));
this.csOutSub.push([this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('DCI-P3'));
this.csOutSub.push([this.subIdx('P3')]);
this.csOut.push(this.fromSys('DCI-P3D60'));
this.csOutSub.push([this.subIdx('P3')]);
this.csOut.push(this.fromSys('Canon DCI-P3+'));
this.csOutSub.push([this.subIdx('Canon'),this.subIdx('P3')]);
this.csOut.push(this.fromSys('Adobe RGB'));
this.csOutSub.push([this.subIdx('Adobe')]);
this.csOut.push(this.fromSys('Adobe Wide Gamut RGB'));
this.csOutSub.push([this.subIdx('Adobe'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('ProPhoto RGB'));
this.csOutSub.push([this.subIdx('Wide Gamut')]);
this.custOut = this.csOut.length;
this.csOut.push(this.toSys('Custom Out'));
this.csOutSub.push([0,1,2,3,4,5,6,7,8,9,10,11,12]);
this.pass = this.csOut.length;
this.csOut.push(this.fromSysMatrix('Passthrough', new Float64Array([1,0,0, 0,1,0, 0,0,1]), this.system.white.buffer.slice(0)));
this.csM.push(this.csOut[this.csOut.length - 1]);
this.csOutSub.push([0,1,2,3,4,5,6,7,8,9,10,11,12]);
this.LA = this.csOut.length;
this.csOut.push(this.fromSysLA('LA', this.illuminant('d65')));
this.csOutSub.push([0,1,2,3,4,5,6,7,8,9,10,11,12]);
var max = this.csIn.length;
for (var j=0; j<max; j++) {
this.inList.push({name: this.csIn[j].name,idx: j});
}
var max2 = this.csOut.length;
for (var j=0; j<max2; j++) {
if (j != this.LA) {
this.outList.push({name: this.csOut[j].name,idx: j});
}
}
max = this.inList.length;
max2 = this.outList.length;
for (var i=0; i<max; i++) {
this.laList.push({name: this.inList[i].name});
this.csLASub.push(this.csInSub[i].slice(0));
for (var j=0; j<max2; j++) {
if (this.laList[i].name === this.outList[j].name) {
this.laList[i].idx = this.outList[j].idx;
this.csLASub[i] = this.csOutSub[j].slice(0);
break;
}
}
}
};
// Colour calculations
LUTColourSpace.prototype.RGBtoXYZ = function(xy, white) {
// xy = [ xr, yr,
// xg, yg,
// xb, yb ]
// white = [ xw, yw, zw ];
var XYZ = new Float64Array([
xy[0]/xy[1], xy[2]/xy[3], xy[4]/xy[5],
1, 1, 1,
(1-xy[0]-xy[1])/xy[1], (1-xy[2]-xy[3])/xy[3], (1-xy[4]-xy[5])/xy[5]
]);
var invXYZ = this.mInverse(XYZ);
if (!invXYZ || !white) {
return false;
}
var S = this.mMult(invXYZ, new Float64Array([white[0]/white[1],1,white[2]/white[1]]));
return new Float64Array([
S[0]*XYZ[0], S[1]*XYZ[1], S[2]*XYZ[2],
S[0]*XYZ[3], S[1]*XYZ[4], S[2]*XYZ[5],
S[0]*XYZ[6], S[1]*XYZ[7], S[2]*XYZ[8]
]);
};
LUTColourSpace.prototype.ciecat02 = function(m, ws,wd) {
var s = this.mMult(this.cat02, new Float64Array([ws[0]/ws[1],1,ws[2]/ws[1]]));
var d = this.mMult(this.cat02, new Float64Array([wd[0]/wd[1],1,wd[2]/wd[1]]));
var CAT = new Float64Array([
d[0]/s[0], 0, 0,
0, d[1]/s[1], 0,
0, 0, d[2]/s[2]
]);
var cat02 = this.mMult(this.invCat02,this.mMult(CAT,this.cat02));
return this.mMult(cat02,m);
};
LUTColourSpace.prototype.calcCAT = function(model, m, ws, wd) {
var cat = this.CATs.getModel(model);
var inv = this.mInverse(cat);
var s = this.mMult(cat, new Float64Array([ws[0]/ws[1],1,ws[2]/ws[1]]));
var d = this.mMult(cat, new Float64Array([wd[0]/wd[1],1,wd[2]/wd[1]]));
var CAT = new Float64Array([
d[0]/s[0], 0, 0,
0, d[1]/s[1], 0,
0, 0, d[2]/s[2]
]);
var n = this.mMult(inv,this.mMult(CAT,cat));
return this.mMult(n,m);
};
LUTColourSpace.prototype.toSys = function(name) {
var max = this.g.length;
for (var j=0; j<max; j++) {
if (name === this.g[j].name) {
return new CSMatrix(name, this.g[j].toSys, this.g[j].white.buffer.slice(0));
}
}
return false;
};
LUTColourSpace.prototype.fromSys = function(name) {
var max = this.g.length;
for (var j=0; j<max; j++) {
if (name === this.g[j].name) {
var out = new CSMatrix(name, this.mInverse(this.g[j].toSys), this.g[j].white.buffer.slice(0));
this.csM.push(out);
return out;
}
}
return false;
};
LUTColourSpace.prototype.matrixVals = function(name,to) {
var m = this.g.length;
for (var j=0; j<m; j++) {
if (name === this.g[j].name) {
if (to) {
return this.g[j].toSys;
} else {
return this.mInverse(this.g[j].toSys);
}
}
}
return false;
};
LUTColourSpace.prototype.fromSysMatrix = function(name,matrix,white) {
var out = new CSMatrix(name, matrix, white);
this.csM.push(out);
return out;
};
LUTColourSpace.prototype.fromSysLUT = function(name,params,xy,white) {
var toXYZ = this.RGBtoXYZ(xy,white);
this.csM.push(new CSMatrix(
name,
this.mInverse(this.mMult(this.system.inv, this.ciecat02(toXYZ,white,this.system.white))),
white
));
return new CSLUT(name, params);
};
LUTColourSpace.prototype.fromSysTC = function(name,params,xy,white) {
var toXYZ = this.RGBtoXYZ(xy,white);
this.csM.push(new CSMatrix(
name,
this.mInverse(this.mMult(this.system.inv, this.ciecat02(toXYZ,white,this.system.white))),
white
));
return new CSToneCurve(name, params);
};
LUTColourSpace.prototype.fromSysLA = function(name,white) {
var csLA = new CSLA(name, white);
this.csM.push(csLA);
return csLA;
// this.csM.push(this.csOut[this.rec709Out]);
// return new CSLA(name, white);
};
LUTColourSpace.prototype.fx = function(buff) {
var o = new Float64Array(buff);
var m = o.length;
var y = this.y;
var Y;
// Colour Temperature Shift
if (this.doWB) {
this.wb.lc(buff);
}
// ASC-CDL
if (this.doASCCDL) {
for (var j=0; j<m; j += 3) {
o[ j ] = (o[ j ]*this.asc[0])+this.asc[3];
o[ j ] = ((o[ j ]<0)?o[ j ]:Math.pow(o[ j ],this.asc[6]));
o[ j ] = (isNaN(o[ j ])?0:o[ j ]);
o[j+1] = (o[j+1]*this.asc[1])+this.asc[4];
o[j+1] = ((o[j+1]<0)?o[j+1]:Math.pow(o[j+1],this.asc[7]));
o[j+1] = (isNaN(o[j+1])?0:o[j+1]);
o[j+2] = (o[j+2]*this.asc[2])+this.asc[5];
o[j+2] = ((o[j+2]<0)?o[j+2]:Math.pow(o[j+2],this.asc[8]));
o[j+2] = (isNaN(o[j+2])?0:o[j+2]);
Y = (y[0]*o[j])+(y[1]*o[j+1])+(y[2]*o[j+2]);
o[ j ] = Y + (this.asc[9]*(o[ j ]-Y));
o[j+1] = Y + (this.asc[9]*(o[j+1]-Y));
o[j+2] = Y + (this.asc[9]*(o[j+2]-Y));
}
}
this.csM[this.curOut].lc(buff);
return o;
};
LUTColourSpace.prototype.firstGuess = function(goal, rgb, d) {
var d2 = d*2;
var data = new Float64Array([
rgb[0] ,rgb[1] ,rgb[2],
rgb[0] + d ,rgb[1] ,rgb[2],
rgb[0] - d ,rgb[1] ,rgb[2],
rgb[0] ,rgb[1] + d ,rgb[2],
rgb[0] ,rgb[1] - d ,rgb[2],
rgb[0] ,rgb[1] ,rgb[2] + d,
rgb[0] ,rgb[1] ,rgb[2] - d
]);
var g = this.fx(data.buffer);
//
//if (goal[0] === goal[1] && goal[0] === goal[2]) {
// self.postMessage({msg:true,details:g});
//}
//
return {
x: rgb,
f: new Float64Array([g[0]-goal[0],g[1]-goal[1],g[2]-goal[2]]),
J: new Float64Array([
(g[3]-g[6])/d2, (g[ 9]-g[12])/d2, (g[15]-g[18])/d2,
(g[4]-g[7])/d2, (g[10]-g[13])/d2, (g[16]-g[19])/d2,
(g[5]-g[8])/d2, (g[11]-g[14])/d2, (g[17]-g[20])/d2,
])
};
};
LUTColourSpace.prototype.roundOff = function(i) {
return parseFloat(i.toFixed(8));
};
// Matrix operations
LUTColourSpace.prototype.mInverse = function(m) {
var det = (m[0]*((m[4]*m[8]) - (m[5]*m[7]))) -
(m[1]*((m[3]*m[8]) - (m[5]*m[6]))) +
(m[2]*((m[3]*m[7]) - (m[4]*m[6])));
if (det === 0) {
return false;
}
var mt = new Float64Array([
m[0], m[3], m[6],
m[1], m[4], m[7],
m[2], m[5], m[8]
]);
var mc = new Float64Array([
(mt[4]*mt[8])-(mt[5]*mt[7]), -(mt[3]*mt[8])+(mt[5]*mt[6]), (mt[3]*mt[7])-(mt[4]*mt[6]),
-(mt[1]*mt[8])+(mt[2]*mt[7]), (mt[0]*mt[8])-(mt[2]*mt[6]), -(mt[0]*mt[7])+(mt[1]*mt[6]),
(mt[1]*mt[5])-(mt[2]*mt[4]), -(mt[0]*mt[5])+(mt[2]*mt[3]), (mt[0]*mt[4])-(mt[1]*mt[3])
]);
return new Float64Array([
mc[0]/det, mc[1]/det, mc[2]/det,
mc[3]/det, mc[4]/det, mc[5]/det,
mc[6]/det, mc[7]/det, mc[8]/det
]);
};
LUTColourSpace.prototype.mMult = function(m1,m2) {
if (m1.length !== 9) {
return false;
}
var len = m2.length;
if (len === 3) {
var out = new Float64Array(3);
out[0] = (m1[0]*m2[0]) + (m1[1]*m2[1]) + (m1[2]*m2[2]);
out[1] = (m1[3]*m2[0]) + (m1[4]*m2[1]) + (m1[5]*m2[2]);
out[2] = (m1[6]*m2[0]) + (m1[7]*m2[1]) + (m1[8]*m2[2]);
return out;
} else if (len === 9) {
var out = new Float64Array(9);
out[0] = (m1[0]*m2[0]) + (m1[1]*m2[3]) + (m1[2]*m2[6]);
out[1] = (m1[0]*m2[1]) + (m1[1]*m2[4]) + (m1[2]*m2[7]);
out[2] = (m1[0]*m2[2]) + (m1[1]*m2[5]) + (m1[2]*m2[8]);
out[3] = (m1[3]*m2[0]) + (m1[4]*m2[3]) + (m1[5]*m2[6]);
out[4] = (m1[3]*m2[1]) + (m1[4]*m2[4]) + (m1[5]*m2[7]);
out[5] = (m1[3]*m2[2]) + (m1[4]*m2[5]) + (m1[5]*m2[8]);
out[6] = (m1[6]*m2[0]) + (m1[7]*m2[3]) + (m1[8]*m2[6]);
out[7] = (m1[6]*m2[1]) + (m1[7]*m2[4]) + (m1[8]*m2[7]);
out[8] = (m1[6]*m2[2]) + (m1[7]*m2[5]) + (m1[8]*m2[8]);
return out;
} else {
return false;
}
};
// Base colour data
LUTColourSpace.prototype.illuminant = function(name) {
switch (name.toLowerCase()) {
case 'a': return new Float64Array([ 0.44757, 0.40745, 0.14498 ]);
case 'b': return new Float64Array([ 0.34842, 0.35161, 0.29997 ]);
case 'c': return new Float64Array([ 0.31006, 0.31616, 0.37378 ]);
case 'd40': return new Float64Array([ 0.38230, 0.38380, 0.23390 ]);
case 'd45': return new Float64Array([ 0.36210, 0.37090, 0.26700 ]);
case 'd50': return new Float64Array([ 0.34567, 0.35850, 0.29583 ]);
case 'd55': return new Float64Array([ 0.33242, 0.34743, 0.32015 ]);
case 'd60': return new Float64Array([ 0.32168, 0.33767, 0.34065 ]);
case 'd65': return new Float64Array([ 0.31270, 0.32900, 0.35830 ]);
case 'd70': return new Float64Array([ 0.30540, 0.32160, 0.37300 ]);
case 'd75': return new Float64Array([ 0.29902, 0.31485, 0.38613 ]);
case 'e': return new Float64Array([ 1/3 , 1/3 , 1/3 ]);
case 'p3': return new Float64Array([ 0.31400, 0.35100, 0.33500 ]);
case 'f1': return new Float64Array([ 0.31310, 0.33727, 0.34963 ]);
case 'f2': return new Float64Array([ 0.37208, 0.37529, 0.25263 ]);
case 'f3': return new Float64Array([ 0.40910, 0.39430, 0.19660 ]);
case 'f4': return new Float64Array([ 0.44018, 0.40329, 0.15653 ]);
case 'f5': return new Float64Array([ 0.31379, 0.34531, 0.34090 ]);
case 'f6': return new Float64Array([ 0.37790, 0.38835, 0.23375 ]);
case 'f7': return new Float64Array([ 0.31292, 0.32933, 0.35775 ]);
case 'f8': return new Float64Array([ 0.34588, 0.35875, 0.29537 ]);
case 'f9': return new Float64Array([ 0.37417, 0.37281, 0.25302 ]);
case 'f10': return new Float64Array([ 0.34609, 0.35986, 0.29405 ]);
case 'f11': return new Float64Array([ 0.38052, 0.37713, 0.24235 ]);
case 'f12': return new Float64Array([ 0.43695, 0.40441, 0.15864 ]);
}
};
LUTColourSpace.prototype.xyzMatrices = function() {
// S-Gamut3.cine
this.sysIdx = this.g.length;
var sgamut3cine = {};
sgamut3cine.name = 'Sony S-Gamut3.cine';
sgamut3cine.cat = this.CATs.modelIdx('CIECAT02');
sgamut3cine.xy = new Float64Array([0.766,0.275, 0.225,0.800, 0.089,-0.087]);
sgamut3cine.white = this.illuminant('d65');
sgamut3cine.toXYZ = this.RGBtoXYZ(sgamut3cine.xy,sgamut3cine.white);
this.g.push(sgamut3cine);
// S-Gamut3
var sgamut3 = {};
sgamut3.name = 'Sony S-Gamut3';
sgamut3.cat = this.CATs.modelIdx('CIECAT02');
sgamut3.xy = new Float64Array([0.730,0.280, 0.140,0.855, 0.100,-0.05]);
sgamut3.white = this.illuminant('d65');
sgamut3.toXYZ = this.RGBtoXYZ(sgamut3.xy,sgamut3.white);
this.g.push(sgamut3);
// S-Gamut
var sgamut = {};
sgamut.name = 'Sony S-Gamut';
sgamut.cat = this.CATs.modelIdx('CIECAT02');
sgamut.xy = new Float64Array([0.730,0.280, 0.140,0.855, 0.100,-0.05]);
sgamut.white = this.illuminant('d65');
sgamut.toXYZ = this.RGBtoXYZ(sgamut.xy,sgamut.white);
this.g.push(sgamut);
// ALEXA Wide Gamut RGB
var alexawgrgb = {};
alexawgrgb.name = 'Alexa Wide Gamut';
alexawgrgb.cat = this.sysCATIdx;
alexawgrgb.xy = new Float64Array([0.6840,0.3130, 0.2210,0.8480, 0.0861,-0.1020]);
alexawgrgb.white = this.illuminant('d65');
alexawgrgb.toXYZ = this.RGBtoXYZ(alexawgrgb.xy,alexawgrgb.white);
this.g.push(alexawgrgb);
// Canon Cinema Gamut
var canoncg = {};
canoncg.name = 'Canon Cinema Gamut';
canoncg.cat = this.sysCATIdx;
canoncg.xy = new Float64Array([0.74,0.27, 0.17,1.14, 0.08,-0.10]);
canoncg.white = this.illuminant('d65');
canoncg.toXYZ = this.RGBtoXYZ(canoncg.xy,canoncg.white);
this.g.push(canoncg);
// Panasonic V-Gamut
var vgamut = {};
vgamut.name = 'Panasonic V-Gamut';
vgamut.cat = this.sysCATIdx;
vgamut.xy = new Float64Array([0.730,0.280, 0.165,0.840, 0.100,-0.030]);
vgamut.white = this.illuminant('d65');
vgamut.toXYZ = this.RGBtoXYZ(vgamut.xy,vgamut.white);
this.g.push(vgamut);
// DRAGONColor
var redDragonColor = {};
redDragonColor.name = 'DRAGONColor';
redDragonColor.cat = this.CATs.modelIdx('Bradford Chromatic Adaptation');
redDragonColor.xy = new Float64Array([0.75002604,0.32671294, 0.32008411,0.68143644, 0.07431725,-0.05592259]);
redDragonColor.white = this.illuminant('e');
redDragonColor.toXYZ = this.RGBtoXYZ(redDragonColor.xy,redDragonColor.white);
this.g.push(redDragonColor);
// DRAGONColor2
var redDragonColor2 = {};
redDragonColor2.name = 'DRAGONColor2';
redDragonColor2.cat = this.CATs.modelIdx('Bradford Chromatic Adaptation');
redDragonColor2.xy = new Float64Array([0.7500263,0.32671336, 0.32008437,0.68143652, 0.145629,0.05124619]);
redDragonColor2.white = this.illuminant('e');
redDragonColor2.toXYZ = this.RGBtoXYZ(redDragonColor2.xy,redDragonColor2.white);
this.g.push(redDragonColor2);
// REDColor
var redColor = {};
redColor.name = 'REDColor';
redColor.cat = this.CATs.modelIdx('Bradford Chromatic Adaptation');
redColor.xy = new Float64Array([0.70017112,0.32750563, 0.32289102,0.6077074, 0.13468038,0.03479195]);
redColor.white = this.illuminant('e');
redColor.toXYZ = this.RGBtoXYZ(redColor.xy,redColor.white);
this.g.push(redColor);
// REDColor2
var redColor2 = {};
redColor2.name = 'REDColor2';
redColor2.cat = this.CATs.modelIdx('Bradford Chromatic Adaptation');
redColor2.xy = new Float64Array([0.86581522,0.32487259, 0.32087226,0.66073571, 0.09160032,-0.02994923]);
redColor2.white = this.illuminant('e');
redColor2.toXYZ = this.RGBtoXYZ(redColor2.xy,redColor2.white);
this.g.push(redColor2);
// REDColor3
var redColor3 = {};
redColor3.name = 'REDColor3';
redColor3.cat = this.CATs.modelIdx('Bradford Chromatic Adaptation');
redColor3.xy = new Float64Array([0.70151835,0.32748417, 0.32069982,0.66526394, 0.10554785,-0.00898842]);
redColor3.white = this.illuminant('e');
redColor3.toXYZ = this.RGBtoXYZ(redColor3.xy,redColor3.white);
this.g.push(redColor3);
// REDColor4
var redColor4 = {};
redColor4.name = 'REDColor4';
redColor4.cat = this.CATs.modelIdx('Bradford Chromatic Adaptation');
redColor4.xy = new Float64Array([0.70151793,0.32748374, 0.32069991,0.66526392, 0.14597596,0.05176764]);
redColor4.white = this.illuminant('e');
redColor4.toXYZ = this.RGBtoXYZ(redColor4.xy,redColor4.white);
this.g.push(redColor4);
// Protune Native
var protune = {};
protune.name = 'Protune Native';
protune.cat = this.sysCATIdx;
protune.xy = new Float64Array([0.70419975,0.19595152, 0.33147178,0.98320117, 0.1037611,-0.04367584]);
protune.white = this.illuminant('d60');
protune.toXYZ = this.RGBtoXYZ(protune.xy,protune.white);
this.g.push(protune);
// Rec709
var rec709 = {};
rec709.name = 'Rec709';
rec709.cat = this.sysCATIdx;
rec709.xy = new Float64Array([0.64,0.33, 0.30,0.60, 0.15,0.06]);
rec709.white = this.illuminant('d65');
rec709.toXYZ = this.RGBtoXYZ(rec709.xy,rec709.white);
this.rec709Idx = this.g.length;
this.g.push(rec709);
// Rec2020
var rec2020 = {};
rec2020.name = 'Rec2020';
rec2020.cat = this.sysCATIdx;
rec2020.xy = new Float64Array([0.708,0.292, 0.170,0.797, 0.131,0.046]);
rec2020.white = this.illuminant('d65');
rec2020.toXYZ = this.RGBtoXYZ(rec2020.xy,rec2020.white);
this.g.push(rec2020);
// sRGB
var srgb = {};
srgb.name = 'sRGB';
srgb.cat = this.sysCATIdx;
srgb.xy = new Float64Array([0.64,0.33, 0.30,0.60, 0.15,0.06]);
srgb.white = this.illuminant('d65');
srgb.toXYZ = this.RGBtoXYZ(srgb.xy,srgb.white);
this.g.push(srgb);
// ACES AP0
var aces = {};
aces.name = 'ACES AP0';
aces.cat = this.sysCATIdx;
aces.xy = new Float64Array([0.73470,0.26530, 0.00000,1.00000, 0.00010,-0.07700]);
aces.white = this.illuminant('d60');
aces.toXYZ = this.RGBtoXYZ(aces.xy,aces.white);
this.g.push(aces);
// ACEScg AP1
var ap1 = {};
ap1.name = 'ACEScg AP1';
ap1.cat = this.sysCATIdx;
ap1.xy = new Float64Array([0.7130,0.2930, 0.1650,0.8300, 0.1280,0.0440]);
ap1.white = this.illuminant('d60');
ap1.toXYZ = this.RGBtoXYZ(ap1.xy,ap1.white);
this.g.push(ap1);
// XYZ
var xyz = {};
xyz.name = 'XYZ';
xyz.cat = this.sysCATIdx;
xyz.xy = false;
xyz.white = this.illuminant('d65');
xyz.toXYZ = new Float64Array([1,0,0, 0,1,0, 0,0,1]);
this.g.push(xyz);
// DCI-P3
var p3 = {};
p3.name = 'DCI-P3';
p3.cat = this.sysCATIdx;
p3.xy = new Float64Array([0.680,0.320, 0.265,0.690, 0.150,0.060]);
p3.white = this.illuminant('p3');
p3.toXYZ = this.RGBtoXYZ(p3.xy,p3.white);
this.g.push(p3);
// DCI-P3D60
var p3d60 = {};
p3d60.name = 'DCI-P3D60';
p3d60.cat = this.sysCATIdx;
p3d60.xy = new Float64Array([0.680,0.320, 0.265,0.690, 0.150,0.060]);
p3d60.white = this.illuminant('d60');
p3d60.toXYZ = this.RGBtoXYZ(p3d60.xy,p3d60.white);
this.g.push(p3d60);
// Canon DCI-P3+
var canonp3p = {};
canonp3p.name = 'Canon DCI-P3+';
canonp3p.cat = this.sysCATIdx;
canonp3p.xy = new Float64Array([0.74,0.27, 0.22,0.78, 0.09,-0.09]);
canonp3p.white = this.illuminant('p3');
canonp3p.toXYZ = this.RGBtoXYZ(canonp3p.xy,canonp3p.white);
this.g.push(canonp3p);
// Adobe RGB
var adobergb = {};
adobergb.name = 'Adobe RGB';
adobergb.cat = this.sysCATIdx;
adobergb.xy = new Float64Array([0.64,0.33, 0.21,0.71, 0.15,0.06]);
adobergb.white = this.illuminant('d65');
adobergb.toXYZ = this.RGBtoXYZ(adobergb.xy,adobergb.white);
this.g.push(adobergb);
// Adobe Wide Gamut RGB
var adobewg = {};
adobewg.name = 'Adobe Wide Gamut RGB';
adobewg.cat = this.sysCATIdx;
adobewg.xy = new Float64Array([0.7347,0.2653, 0.1152,0.8264, 0.1566,0.0177]);
adobewg.white = this.illuminant('d50');
adobewg.toXYZ = this.RGBtoXYZ(adobewg.xy,adobewg.white);
this.g.push(adobewg);
// ProPhoto rgb
var prophoto = {};
prophoto.name = 'ProPhoto RGB';
prophoto.cat = this.sysCATIdx;
prophoto.xy = new Float64Array([0.7347,0.2653, 0.1596,0.8404, 0.0366,0.0001]);
prophoto.white = this.illuminant('d50');
prophoto.toXYZ = this.RGBtoXYZ(prophoto.xy,prophoto.white);
this.g.push(prophoto);
// Custom In (initially Rec709)
var customIn = {};
customIn.name = 'Custom In';
customIn.cat = this.sysCATIdx;
customIn.xy = new Float64Array([0.64,0.33, 0.30,0.60, 0.15,0.06]);
customIn.white = this.illuminant('d65');
customIn.toXYZ = this.RGBtoXYZ(customIn.xy,customIn.white);
this.g.push(customIn);
// Custom Out (initially Rec709)
var customOut = {};
customOut.name = 'Custom Out';
customOut.cat = this.sysCATIdx;
customOut.xy = new Float64Array([0.64,0.33, 0.30,0.60, 0.15,0.06]);
customOut.white = this.illuminant('d65');
customOut.toXYZ = this.RGBtoXYZ(customOut.xy,customOut.white);
this.g.push(customOut);
};
LUTColourSpace.prototype.systemMatrices = function() {
var max = this.g.length;
for (var j=0; j<max; j++) {
if (this.g[j].name !== 'Custom In' && this.g[j].name !== 'Custom Out' && this.g[j].name !== 'Passthrough') {
this.matList.push({name: this.g[j].name,idx: j});
}
if (j === this.sysIdx) {
this.g[j].toSys = new Float64Array([1,0,0, 0,1,0, 0,0,1]);
} else if (this.g[j].name === 'XYZ') {
this.g[j].toSys = this.system.inv;
} else if (this.g[j].white[0] !== this.system.white[0] && this.g[j].white[1] !== this.system.white[1] && this.g[j].white[2] !== this.system.white[2]) {
this.g[j].toSys = this.mMult(this.system.inv, this.ciecat02(this.g[j].toXYZ,this.g[j].white,this.system.white));
} else {
this.g[j].toSys = this.mMult(this.system.inv, this.g[j].toXYZ);
}
}
};
LUTColourSpace.prototype.initPSSTCDL = function() {
this.psstMC = true;
this.psstYC = false;
this.psstC = new Ring();
this.psstC.setDetails({
title: 'Colour',
L: new Float64Array([
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0
]).buffer,
p: false,
mod: 1
});
this.psstSat = new Ring();
this.psstSat.setDetails({
title: 'Saturation',
L: new Float64Array([
1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,
1,1,1,1,1
]).buffer,
p: false
});
this.psstS = new Ring();
this.psstS.setDetails({
title: 'Slope',
L: new Float64Array([
1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,
1,1,1,1,1
]).buffer,
p: false
});
this.psstO = new Ring();
this.psstO.setDetails({
title: 'Offset',
L: new Float64Array([
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,
0,0,0,0,0
]).buffer,
p: false
});
this.psstP = new Ring();
this.psstP.setDetails({
title: 'Power',
L: new Float64Array([
1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,
1,1,1,1,1,1,1,1,
1,1,1,1,1
]).buffer,
p: false
});
this.psstF = new Ring();
this.psstF.setDetails({
title: 'Forward',
L: new Float64Array([
-0.0038695657404562, 0.0065858762356100, 0.0201406099404900, 0.0352828041364269, 0.0520594851346660, 0.0701816671759477, 0.0888871169278112, 0.1071434832095446, 0.1241300598546256,
0.1394968704492374, 0.1532401783604684, 0.1657675172633559, 0.1775709068913177, 0.1889505001250262, 0.2001195960344167, 0.2112553615444404, 0.2225296284119030, 0.2341370761420996,
0.2463352166687472, 0.2595247516121330, 0.2744679542490435, 0.2933226298747170, 0.3287624039244701, 0.4006899403301722, 0.4276051836096898, 0.4447257669774564, 0.4589794729871186,
0.4717842618396581, 0.4837468755866364, 0.4952093965712169, 0.5064034638133755, 0.5175127750345129, 0.5287073445057027, 0.5401709526670702, 0.5521354485080856, 0.5649433872473982,
0.5790664946157549, 0.5943630562521310, 0.6106992294013223, 0.6278535155401859, 0.6454346342920819, 0.6629428672584311, 0.6798980496803277, 0.6959546592769115, 0.7109387359446133,
0.7250595197384678, 0.7388861383721239, 0.7524290718192624, 0.7656794919842305, 0.7786321731846290, 0.7912850081995813, 0.8036385234867822, 0.8156954169692322, 0.8274601335361318,
0.8389384865889260, 0.8501373280139014, 0.8610751527873562, 0.8718717120052339, 0.8825403689956453, 0.8930611389578428, 0.9034170399839038, 0.9135941187798583, 0.9235814085450882,
0.9333707275123123, 0.9429564536395982, 0.9523352418731073, 0.9615057270095099, 0.9704682268100525, 0.9792244585320422, 0.9877772736056640, 0.9961304342481022
]).buffer,
p: true
});
this.psstB = new Ring();
this.psstB.setDetails({
title: 'Back',
L: new Float64Array([
0.042311434,
0.828850698,
1.852489293,
2.158688535,
3.183904084,
3.970443351,
4.994081951,
6.325496742
]).buffer,
p: true
});
this.psstY = new Ring();
this.psstY.setDetails({
title: 'Luma',
L: new Float64Array([
0.0722,
0.2848,
0.2126,
0.6,
// 0.3082,
0.9278,
0.7152,
0.7874,
0.0722
]).buffer,
p: false
});
this.psstM = new Ring();
this.psstM.setDetails({
title: 'CbCr Magnitude',
L: new Float64Array([
0.346430745,0.342962699,0.33969838,0.337347957,0.336560982,0.337917133,0.341937773,0.349106433,0.359887984,
0.374737194,0.394086142,0.361208741,0.334229968,0.31322564,0.297800651,0.287381612,0.281345482,0.279049081,
0.279803042,0.282820273,0.287167419,0.2780547,0.272555398,0.269216643,0.267119872,0.265609644,0.264162578,
0.262344581,0.259835788,0.256508476,0.252538822,0.248681245,0.245993008,0.245298419,0.247291756,0.252580435,
0.261730792,0.275291255,0.293766309,0.317502734,0.346430744,0.340484523,0.337392505,0.336559654,0.337660332,
0.340582153,0.345407661,0.352427205,0.362187055,0.375589699,0.394086141,0.362588341,0.337932638,0.318643857,
0.303748703,0.292615326,0.284863469,0.280318319,0.278996163,0.281119417,0.287167418,0.269072329,0.25607167,
0.248148933,0.24525667,0.247440263,0.254900418,0.268012927,0.287301219,0.313327834,0.346430745
]).buffer,
p: false
});
};
LUTColourSpace.prototype.setYCoeffs = function() {
this.y = this.getYCoeffs(this.system.name);
// console.log(this.y);
};
LUTColourSpace.prototype.getYCoeffs = function(cs) {