Hannes Pries - Web/Shopware/JavaScript-Developer Blog
Weil es immer eine simple Lösung gibt!

imageData.data = frame;

for(var ifr=0; ifr<frame.length;ifr++){
imageData.data[ifr] = frame[ifr];
}

{
result:{...},
index:0
}

function WebWorkerPool(){
this.workerScript = "";
this.workerData = []; // {msg:{},callback:function}

this.callback = null; //global callback for workerData
this.finishCallback = null;

this.finishCounter=0;

this.worker = null;
this.workers = [];

this.callbackWrapper=function(controller){
return function(event){
controller.finishCounter--;
if(event.data.index && controller.workerData[event.data.index].callback){
controller.workerData[event.data.index].callback(event.data.result);
}
else if(controller.callback){
controller.callback(event.data.result);
}

if(controller.finishCounter == 0){
controller.finishCallback();
try{
controller.worker.close();
for(var iW=0;iW < controller.workers.length; iW++){
controller.workers[iW].close();
}
}
catch(e){

}
}
};
};

this.startSerial = function(){
this.startParallel(1);
};

this.startParallel = function(max){
if(!max){
max = 4;
}

this.finishCounter = this.workerData.length;
this.worker = new Worker(this.workerScript);
for(var iW=0; iW<max; iW++){
var worker = new Worker(this.workerScript);
worker.addEventListener('message', this.callbackWrapper(this), false);
this.workers.push(worker);
}

var factor = this.workerData.length / max;
for(var i=0;i<this.workerData.length;i++){
var workerIndex = Math.floor(i/factor);
this.workers[workerIndex].postMessage(
{
workload: this.workerData.msg,
index:i
});
}
};
}

SSL_ERROR_BAD_CERT_DOMAIN

sudo a2ensite llama-ssl

sudo a2enmod ssl

sudo apt-get update
sudo apt-get install python-letsencrypt-apache

sudo letsencrypt --apache -d mp4togif.com -d www.mp4togif.com

Include /etc/letsencrypt/options-ssl-apache.conf
SSLCertificateFile /etc/letsencrypt/live/mp4togif.com/cert.pem
SSLCertificateKeyFile /etc/letsencrypt/live/mp4togif.com/privkey.pem
SSLCertificateChainFile /etc/letsencrypt/live/mp4togif.com/fullchain.pem

sudo a2ensite mp4togif-ssl

sudo service apache2 reload

function createVignetting(ctx){
var x=Math.round(ctx.canvas.width/2);
var y=Math.round(ctx.canvas.height/2);
var grd=ctx.createRadialGradient(x,y,1,x,y,y-5);

grd.addColorStop(0,'rgba(0,0,0,0)');
grd.addColorStop(1,'rgba(0,0,0,0.8)');

ctx.fillStyle=grd;
ctx.fillRect(0,0,ctx.canvas.width,ctx.canvas.height);

return ctx;
}

function render(src, trg, rm, ra, gm, ga, bm, ba, useGreyScale){
var srcData=src.getImageData(0,0,src.canvas.width,src.canvas.height);
var data=srcData.data;
for(var i=0;i<data.length;i+=4){
if(useGreyScale){
var avg = (data[i+0]*rm) + (data[i+1]*gm) + (data[i+2]*bm);
data[i+0]=avg;
data[i+1]=avg;
data[i+2]=avg;
}
else{
data[i+0]=data[i+0]*rm;
data[i+1]=data[i+1]*gm;
data[i+2]=data[i+2]*bm;
}

data[i+0]=Math.abs(data[i+0]+parseInt(ra));
data[i+1]=Math.abs(data[i+1]+parseInt(ga));
data[i+2]=Math.abs(data[i+2]+parseInt(ba));
}
trg.canvas.width=src.canvas.width;
trg.canvas.height=src.canvas.height;
trg.putImageData(srcData,0,0);
}