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colourspace.js
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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.ready = 0;
this.lutMaker = new LUTs();
this.g = [];
this.csIn = [];
this.csOut = [];
this.csM = [];
this.CATs = new CSCAT();
// CIECAT02
// CIECAT97s
// Bradford Chromatic Adaptation
// Von Kries
// Sharp
// CMCCAT2000
// Bianco BS
// Bianco BS-PC
// XYZ Scaling
this.sysCAT = 'CIECAT02';
this.sysCATIdx = this.CATs.setDefault(this.sysCAT);
this.matList = [];
this.xyzMatrices();
this.system = this.g[this.sysIdx];
this.system.fromXYZ = this.mInverse(this.system.toXYZ);
this.y = new Float64Array([ 0.2126, 0.7152, 0.0722 ]);
this.systemMatrices();
this.setSaturated();
this.Ys = {};
this.setYCoeffs();
this.defLUTs = {};
this.nul = false;
this.isTrans = false;
this.ver = 0;
this.curIn = 0;
this.curOut = 0;
this.planck = new Planck(this.lutMaker);
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.sdrSatGamma = 1.2;
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.gLimLin = false;
this.gLimL = 1;
this.gLimY = new Float64Array(this.y.buffer.slice(0));
this.gLimGIn = 0;
this.gLimGOut = 0;
this.gLimC = false;
this.gLimB = true;
this.doHG = false;
this.doWB = false;
this.doASCCDL = false;
this.doPSSTCDL = false;
this.doGamutLim = false;
this.doFC = false;
this.loadColourSpaces();
this.buildColourSquare();
this.buildMultiColours();
this.ready++;
}
// 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 'Fujifilm': return 4;
case 'RED': return 5;
case 'DJI': return 6;
case 'GoPro': return 7;
case 'Blackmagic': return 8;
case 'Nikon': return 9;
case 'Bolex': return 10;
case 'Adobe': return 11;
case 'Rec709': return 12;
case 'Rec2020': return 13;
case 'Rec2100': return 14;
case 'P3': return 15;
case 'Wide Gamut': return 16;
case 'ACES': return 17;
case 'All': return 18;
}
return false;
};
LUTColourSpace.prototype.loadColourSpaces = function() {
this.subNames = [ 'Sony',
'ARRI',
'Canon',
'Panasonic',
'Fujifilm',
'RED',
'DJI',
'GoPro',
'Blackmagic',
'Nikon',
'Bolex',
'Adobe',
'Rec709',
'Rec2020',
'Rec2100',
'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.cine (Venice)'));
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-Gamut3 (Venice)'));
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('ARRI Wide Gamut 4'));
this.csInSub.push([this.subIdx('ARRI'),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(this.toSys('Panasonic V-Gamut'));
this.csInSub.push([this.subIdx('Panasonic'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('Fujifilm F-Log Gamut'));
this.csInSub.push([this.subIdx('Fujifilm'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('DaVinci Wide Gamut'));
this.csInSub.push([this.subIdx('Blackmagic'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('Blackmagic 4.6k Film'));
this.csInSub.push([this.subIdx('Blackmagic'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('Blackmagic 4k Film'));
this.csInSub.push([this.subIdx('Blackmagic'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('Blackmagic Pocket 6k Film'));
this.csInSub.push([this.subIdx('Blackmagic'),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('REDWideGamutRGB'));
this.csInSub.push([this.subIdx('RED')]);
this.csIn.push(this.toSys('DJI D-Gamut'));
this.csInSub.push([this.subIdx('DJI'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('DJI D-GamutM'));
this.csInSub.push([this.subIdx('DJI'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('Protune Native'));
this.csInSub.push([this.subIdx('GoPro'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('Bolex Wide Gamut'));
this.csInSub.push([this.subIdx('Bolex'),this.subIdx('Wide Gamut')]);
this.rec709In = this.csIn.length;
this.csIn.push(this.toSys('Rec709'));
this.csInSub.push([this.subIdx('Rec709'),this.subIdx('DJI')]);
this.csIn.push(this.toSys('Rec2020'));
this.csInSub.push([this.subIdx('Rec2020'),this.subIdx('Nikon'),this.subIdx('Wide Gamut')]);
this.csIn.push(this.toSys('Rec2100'));
this.csInSub.push([this.subIdx('Rec2100'),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('P3 - DCI'));
this.csInSub.push([this.subIdx('P3')]);
this.csIn.push(this.toSys('P3 - D60'));
this.csInSub.push([this.subIdx('P3')]);
this.csIn.push(this.toSys('P3 - D65'));
this.csInSub.push([this.subIdx('P3')]);
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('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.csIn.push(new CSLabSpace('CIELAB D65', 95.0489, 100.0, 108.8840, true, this.toSys('XYZ')));
this.csInSub.push([this.subIdx('Wide Gamut')]);
this.csIn.push(new CSLabSpace('CIELAB D50', 96.4212, 100.0, 82.5188, true, this.toSys('XYZ')));
this.csInSub.push([this.subIdx('Wide Gamut')]);
this.custIn = this.csIn.length;
this.csIn.push(this.toSys('Custom In'));
this.csInSub.push([0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17]);
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([0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17]);
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.cine (Venice)'));
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-Gamut3 (Venice)'));
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('ARRI Wide Gamut 4'));
this.csOutSub.push([this.subIdx('ARRI'),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('Fujifilm F-Log Gamut'));
this.csOutSub.push([this.subIdx('Fujifilm'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('DaVinci Wide Gamut'));
this.csOutSub.push([this.subIdx('Blackmagic'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('Blackmagic 4.6k Film'));
this.csOutSub.push([this.subIdx('Blackmagic'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('Blackmagic 4k Film'));
this.csOutSub.push([this.subIdx('Blackmagic'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('Blackmagic Pocket 6k Film'));
this.csOutSub.push([this.subIdx('Blackmagic'),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('REDWideGamutRGB'));
this.csOutSub.push([this.subIdx('RED')]);
this.csOut.push(this.fromSys('DJI D-Gamut'));
this.csOutSub.push([this.subIdx('DJI'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('DJI D-GamutM'));
this.csOutSub.push([this.subIdx('DJI'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('Protune Native'));
this.csOutSub.push([this.subIdx('GoPro'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('Bolex Wide Gamut'));
this.csOutSub.push([this.subIdx('Bolex'),this.subIdx('Wide Gamut')]);
this.rec709Out = this.csIn.length;
this.csOut.push(this.fromSys('Rec709'));
this.csOutSub.push([this.subIdx('Rec709'),this.subIdx('DJI')]);
this.defLUTs.Amira709 = this.csOut.length;
this.csOut.push(
this.fromSysLUT('Amira709',
{
format: 'cube',
min: [0,0,0],
max: [1,1,1],
wp: this.illuminant('d65'),
genInt: 1,
preInt: 1
}
)
);
this.csOutSub.push([this.subIdx('ARRI'),this.subIdx('Rec709')]);
this.defLUTs.AlexaX2 = this.csOut.length;
this.csOut.push(
this.fromSysLUT('Alexa-X-2',
{
format: 'cube',
min: [0,0,0],
max: [1,1,1],
wp: this.illuminant('d65'),
genInt: 1,
preInt: 1
}
)
);
this.csOutSub.push([this.subIdx('ARRI'),this.subIdx('Rec709')]);
this.defLUTs.s709 = this.csOut.length;
this.csOut.push(
this.fromSysLUT('s709',
{
format: 'cube',
min: [0,0,0],
max: [1,1,1],
wp: this.illuminant('d65'),
genInt: 1,
preInt: 1
}
)
);
this.csOutSub.push([this.subIdx('Sony'),this.subIdx('Rec709')]);
this.defLUTs.LC709 = this.csOut.length;
this.csOut.push(
this.fromSysLUT('LC709',
{
format: 'cube',
min: [0,0,0],
max: [1,1,1],
wp: this.illuminant('d65'),
genInt: 1,
preInt: 1
}
)
);
this.csOutSub.push([this.subIdx('Sony'),this.subIdx('Rec709')]);
this.defLUTs.LC709A = this.csOut.length;
this.csOut.push(
this.fromSysLUT('LC709A',
{
format: 'cube',
min: [0,0,0],
max: [1,1,1],
wp: this.illuminant('d65'),
genInt: 1,
preInt: 1
}
)
);
this.csOutSub.push([this.subIdx('Sony'),this.subIdx('Rec709')]);
this.defLUTs.Cine709 = this.csOut.length;
this.csOut.push(
this.fromSysLUT('Sony Cine+709',
{
format: 'cube',
min: [0,0,0],
max: [1,1,1],
wp: this.illuminant('d65'),
genInt: 1,
preInt: 1
}
)
);
this.csOutSub.push([this.subIdx('Sony'),this.subIdx('Rec709')]);
this.defLUTs.cpoutdaylight = this.csOut.length;
this.csOut.push(
this.fromSysLUT('Canon CP IDT (Daylight)',
{
format: 'cube',
min: [0,0,0],
max: [1,1,1],
wp: this.illuminant('d65'),
genInt: 1,
preInt: 1
}
)
);
this.csOutSub.push([this.subIdx('Canon'),this.subIdx('Rec709')]);
this.defLUTs.cpouttungsten = this.csOut.length;
this.csOut.push(
this.fromSysLUT('Canon CP IDT (Tungsten)',
{
format: 'cube',
min: [0,0,0],
max: [1,1,1],
wp: this.illuminant('d65'),
genInt: 1,
preInt: 1
}
)
);
this.csOutSub.push([this.subIdx('Canon'),this.subIdx('Rec709')]);
this.defLUTs.V709 = this.csOut.length;
this.csOut.push(
this.fromSysLUT('Varicam V709',
{
format: 'cube',
min: [0,0,0],
max: [1,1,1],
wp: this.illuminant('d65'),
genInt: 1,
preInt: 1
}
)
);
this.csOutSub.push([this.subIdx('Panasonic'),this.subIdx('Rec709')]);
this.csOut.push(this.fromSys('Rec2020'));
this.csOutSub.push([this.subIdx('Rec2020'),this.subIdx('Nikon'),this.subIdx('Wide Gamut')]);
this.csOut.push(this.fromSys('Rec2100'));
this.csOutSub.push([this.subIdx('Rec2100'),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('P3 - DCI'));
this.csOutSub.push([this.subIdx('P3')]);
this.csOut.push(this.fromSys('P3 - D60'));
this.csOutSub.push([this.subIdx('P3')]);
this.csOut.push(this.fromSys('P3 - D65'));
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.csOut.push(new CSLabSpace('CIELAB D65', 95.0489, 100.0, 108.8840, false, this.fromSys('XYZ')));
this.csOutSub.push([this.subIdx('Wide Gamut')]);
this.csOut.push(new CSLabSpace('CIELAB D50', 96.4212, 100.0, 82.5188, false, this.fromSys('XYZ')));
this.csOutSub.push([this.subIdx('Wide Gamut')]);
this.custOut = this.csOut.length;
this.csOut.push(this.toSys('Custom Out'));
this.csOutSub.push([0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17]);
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([0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17]);
this.LA = this.csOut.length;
this.csOut.push(this.fromSysLA('LA', {wp: this.illuminant('d65')}));
this.csOutSub.push([0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17]);
var max = this.csIn.length;
this.inCATs = [];
this.outCATs = [];
for (var j=0; j<max; j++) {
this.inList.push({name: this.csIn[j].name,idx: j});
this.inCATs.push(this.getCSCat(this.csIn[j].name));
}
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});
}
this.outCATs.push(this.getCSCat(this.csOut[j].name));
}
max2 = this.outList.length;
var k=0;
for (var i=0; i<max; i++) {
if (this.csIn[i].isMatrix() && this.csIn[i].name !== 'Passthrough') {
this.laList.push({name: this.csIn[i].name});
this.csLASub.push(this.csInSub[i].slice(0));
if (this.laList[k].name === 'Custom In') {
this.laList[k].idx = this.custOut;
this.csLASub[k] = this.csOutSub[this.custOut].slice(0);
} else {
for (var j=0; j<max2; j++) {
if (this.laList[k].name === this.outList[j].name) {
this.laList[k].idx = this.outList[j].idx;
this.csLASub[k] = this.csOutSub[j].slice(0);
break;
}
}
}
k++;
}
}
};
LUTColourSpace.prototype.getCSCat = function(name) {
var m = this.g.length;
for (var j=0; j<m; j++) {
if (name === this.g[j].name) {
return this.g[j].cat;
}
}
return this.sysCATIdx; // fall back to default
};
// Colour calculations
LUTColourSpace.prototype.RGBtoXYZ = function(xy, white) {
// xy = [ xr, yr,
// xg, yg,
// xb, yb ]
// white = [ xw, yw, zw ];
if (typeof white === 'undefined' || !white) {
return false;
}
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) {
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.calcCAT = function(m, ws, wd, model) {
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 m = this.g.length;
for (var j=0; j<m; 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);
this.Ys[name] = this.getYCoeffs(j);
// console.log(name);
// console.log(this.Ys[name]);
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) {
var colours = new Float64Array([
1,0,0,
0,1,0,
0,0,1,
1,1,1,
0.8,0,0,
0,0.8,0,
0,0,0.8,
0.4,0,0,
0,0.4,0,
0,0,0.4,
0.2,0,0,
0,0.2,0,
0,0,0.2,
0.8,0.8,0.8,
0.4,0.4,0.4,
0.2,0.2,0.2
]);
this.csIn[this.rec709In].lc(colours.buffer);
var csLUT = new CSLUT(name, params, this.lutMaker, colours);
this.csM.push(csLUT);
return csLUT;
};
LUTColourSpace.prototype.fromSysTC = function(name,params,xy,white,model) {
var cat = this.CATs.getModel(model);
var toXYZ = this.RGBtoXYZ(xy,white);
this.csM.push(new CSMatrix(
name,
this.mInverse(this.mMult(this.system.fromXYZ, this.calcCAT(toXYZ,white,this.system.white,cat))),
white
));
return new CSToneCurve(name, params);
};
LUTColourSpace.prototype.fromSysLA = function(name,params) {
var colours = new Float64Array([
1,0,0,
0,1,0,
0,0,1,
1,1,1,
0.8,0,0,
0,0.8,0,
0,0,0.8,
0.4,0,0,
0,0.4,0,
0,0,0.4,
0.2,0,0,
0,0.2,0,
0,0,0.2,
0.8,0.8,0.8,
0.4,0.4,0.4,
0.2,0.2,0.2
]);
this.csIn[this.rec709In].lc(colours.buffer);
var csLA = new CSLUT(name, params, this.lutMaker, colours);
this.csM.push(csLA);
return csLA;
};
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])) * (1-this.asc[9]);
o[ j ] = Y + (this.asc[9]*o[ j ]);
o[j+1] = Y + (this.asc[9]*o[j+1]);
o[j+2] = Y + (this.asc[9]*o[j+2]);
}
}
this.csM[this.curOut].lc(buff);
return o;
};
LUTColourSpace.prototype.rx = function(buff) {
var o = new Float64Array(buff);
var m = o.length;
var y = this.y;
var Y;
this.csM[this.curOut].rc(buff);
// Colour Temperature Shift
if (this.doWB) {
this.wb.rc(buff);
}
// ASC-CDL
if (this.doASCCDL) {
var s = 1/Math.max(this.asc[9],0.00000001); // avoid division by zero
for (var j=0; j<m; j += 3) {
Y = ((y[0]*o[j])+(y[1]*o[j+1])+(y[2]*o[j+2])) * (1-s);
o[ j ] = (o[ j ]*s) + Y;
o[j+1] = (o[j+1]*s) + Y;
o[j+2] = (o[j+2]*s) + Y;
o[ j ] = ((o[ j ]<0)?o[ j ]:Math.pow(o[ j ],1/this.asc[6]));
o[ j ] = (o[ j ] - this.asc[3])/this.asc[0];
o[ j ] = (isNaN(o[ j ])?0:o[ j ]);
o[j+1] = ((o[j+1]<0)?o[j+1]:Math.pow(o[j+1],1/this.asc[7]));
o[j+1] = (o[j+1] - this.asc[4])/this.asc[1];
o[j+1] = (isNaN(o[j+1])?0:o[j+1]);
o[j+2] = ((o[j+2]<0)?o[j+2]:Math.pow(o[j+2],1/this.asc[8]));
o[j+2] = (o[j+2] - this.asc[5])/this.asc[2];
o[j+2] = (isNaN(o[j+2])?0:o[j+2]);
}
}
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;
}
return new Float64Array([
((M[4]*M[8])-(M[5]*M[7]))/det, ((M[2]*M[7])-(M[1]*M[8]))/det, ((M[1]*M[5])-(M[2]*M[4]))/det,
((M[5]*M[6])-(M[3]*M[8]))/det, ((M[0]*M[8])-(M[2]*M[6]))/det, ((M[2]*M[3])-(M[0]*M[5]))/det,
((M[3]*M[7])-(M[4]*M[6]))/det, ((M[1]*M[6])-(M[0]*M[7]))/det, ((M[0]*M[4])-(M[1]*M[3]))/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 ]);
case 'iso7589studiotungsten': return new Float64Array([ 0.43088, 0.40784, 0.16128 ]);
case 'iso7589photoflood': return new Float64Array([ 0.41154, 0.39851, 0.18995 ]);
case 'iso7589daylight': return new Float64Array([ 0.33357, 0.35368, 0.31275 ]);
}
};
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);
// Venice S-Gamut3.cine
var vsgamut3cine = {};
vsgamut3cine.name = 'Sony S-Gamut3.cine (Venice)';
vsgamut3cine.cat = this.CATs.modelIdx('CIECAT02');
vsgamut3cine.xy = new Float64Array([0.775901872,0.274502393, 0.188682903,0.828684937, 0.101337383,-0.089187517]);
vsgamut3cine.white = this.illuminant('d65');
vsgamut3cine.toXYZ = this.RGBtoXYZ(vsgamut3cine.xy,vsgamut3cine.white);
this.g.push(vsgamut3cine);
// 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);
// Venice S-Gamut3
var vsgamut3 = {};
vsgamut3.name = 'Sony S-Gamut3 (Venice)';
vsgamut3.cat = this.CATs.modelIdx('CIECAT02');
vsgamut3.xy = new Float64Array([0.740464264,0.279364375, 0.089241145,0.893809529, 0.110488237,-0.052579333]);
vsgamut3.white = this.illuminant('d65');
vsgamut3.toXYZ = this.RGBtoXYZ(vsgamut3.xy,vsgamut3.white);
this.g.push(vsgamut3);
// 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);
// ARRI Wide Gamut 4
var arriwg4 = {};
arriwg4.name = 'ARRI Wide Gamut 4';
arriwg4.cat = this.CATs.modelIdx('CIECAT02');
arriwg4.xy = new Float64Array([0.7347,0.2653, 0.1424,0.8576, 0.0991,-0.0308]);
arriwg4.white = this.illuminant('d65');
arriwg4.toXYZ = this.RGBtoXYZ(arriwg4.xy,arriwg4.white);
this.g.push(arriwg4);
// 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.CATs.modelIdx('CIECAT02');
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);
// DaVinci Wide Gamut
var davinciwg = {};
davinciwg.name = 'DaVinci Wide Gamut';
davinciwg.cat = this.CATs.modelIdx('Bradford Chromatic Adaptation');
davinciwg.xy = new Float64Array([0.8000,0.3130, 0.1682,0.9877, 0.0790,-0.1155]);
davinciwg.white = this.illuminant('d65');
davinciwg.toXYZ = this.RGBtoXYZ(davinciwg.xy,davinciwg.white);
this.g.push(davinciwg);
// Panasonic V-Gamut
var vgamut = {};
vgamut.name = 'Panasonic V-Gamut';
vgamut.cat = this.CATs.modelIdx('Bradford Chromatic Adaptation');
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);
// BMD 4k Film
var bmd4k = {};
bmd4k.name = 'Blackmagic 4k Film';
bmd4k.cat = this.CATs.modelIdx('CIECAT02');
bmd4k.xy = new Float64Array([1.065485164,0.395870911, 0.369219642,0.778131628, 0.095906214,0.033373394]);
bmd4k.white = new Float64Array([ 0.313122422, 0.32974025, 0.357137329 ]);
bmd4k.toXYZ = this.RGBtoXYZ(bmd4k.xy,bmd4k.white);
this.g.push(bmd4k);
// BMD 4.6k Film
var bmd46k = {};
bmd46k.name = 'Blackmagic 4.6k Film';
bmd46k.cat = this.CATs.modelIdx('CIECAT02');
bmd46k.xy = new Float64Array([0.860834693,0.368871184, 0.328213148,0.615592065, 0.07825175,-0.023256123]);
bmd46k.white = this.illuminant('d65');
bmd46k.toXYZ = this.RGBtoXYZ(bmd46k.xy,bmd46k.white);
this.g.push(bmd46k);
// BMD Pocket 6k Film
var bmdp6k = {};
bmdp6k.name = 'Blackmagic Pocket 6k Film';
bmdp6k.cat = this.CATs.modelIdx('CIECAT02');
bmdp6k.xy = new Float64Array([0.720597149,0.329307006, 0.298281489,0.629701953, 0.132079051,0.031392256]);
bmdp6k.white = this.illuminant('d65');
bmdp6k.toXYZ = this.RGBtoXYZ(bmdp6k.xy,bmdp6k.white);
this.g.push(bmdp6k);
// Fujifilm F-Log Gamut
var fgamut = {};
fgamut.name = 'Fujifilm F-Log Gamut';
fgamut.cat = this.sysCATIdx;
fgamut.xy = new Float64Array([0.70800,0.29200, 0.17000,0.79700, 0.13100,0.04600]);
fgamut.white = this.illuminant('d65');
fgamut.toXYZ = this.RGBtoXYZ(fgamut.xy,fgamut.white);
this.g.push(fgamut);
// REDWideGamutRGB
var redWideGamutRGB = {};
redWideGamutRGB.name = 'REDWideGamutRGB';
redWideGamutRGB.cat = this.CATs.modelIdx('Bradford Chromatic Adaptation');
redWideGamutRGB.xy = new Float64Array([0.780308,0.304253, 0.121595,1.493994, 0.095612,-0.084589]);
redWideGamutRGB.white = this.illuminant('d65');
redWideGamutRGB.toXYZ = this.RGBtoXYZ(redWideGamutRGB.xy,redWideGamutRGB.white);
this.g.push(redWideGamutRGB);
// 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);
// Bolex
var bolex = {};
bolex.name = 'Bolex Wide Gamut';
bolex.cat = this.CATs.modelIdx('Bradford Chromatic Adaptation');
bolex.xy = new Float64Array([0.73000,0.29400, 0.22300,0.82000, 0.10300,-0.05500]);