var cinejs={};cinejs.filters={};cinejs.util={internal:{}};cinejs.util.applyConvolution=function(frame,width,height,filter,divisor,offset){var filterSize=Math.floor(filter.length/2);var i=0;var newImage=[];for(var y=0;y<height;y++){for(var x=0;x<width;x++){var red=0;var green=0;var blue=0;for(var j=0;j<filter.length;j++){var sourceRow=Math.min(Math.max(y+j-filterSize,0),height-1);for(i=0;i<filter.length;i++){var sourceCol=Math.min(Math.max(x+i-filterSize,0),width-1);var frameIndex=4*((width*sourceRow)+sourceCol);red+=filter[j][i]*frame.data[frameIndex+0];green+=filter[j][i]*frame.data[frameIndex+1];blue+=filter[j][i]*frame.data[frameIndex+2];}}
red/=divisor;green/=divisor;blue/=divisor;newImage.push(Math.min(Math.max(0,red+offset),255));newImage.push(Math.min(Math.max(0,green+offset),255));newImage.push(Math.min(Math.max(0,blue+offset),255));newImage.push(255);}}
for(i=0;i<newImage.length;i++){frame.data[i]=newImage[i];}};cinejs.util.hsvToRgb=function(hue,saturation,value){if(saturation===0.0){return[value,value,value];}
hue%=360.0;hue/=60.0;var i=Math.floor(hue);var f=hue-i;var w=value*(1.0-saturation);var q=value*(1.0-(saturation*f));var t=value*(1.0-(saturation*(1.0-f)));return cinejs.util.internal.rgbType[i](value,w,q,t);};cinejs.util.rgbToHsv=function(red,green,blue){var max=red;var min=red;var maxChannel="red";if(green>max){max=green;maxChannel="green";}
if(blue>max){max=blue;maxChannel="blue";}
if(green<min){min=green;}
if(blue<min){min=blue;}
var saturation=0.0;if(max!==0.0){saturation=(max-min)/max;}
var hue=0.0;if(saturation!==0.0){var delta=max-min;if(maxChannel==="red"){hue=(green-blue)/delta;}
else if(maxChannel==="green"){hue=2.0+(blue-red)/delta;}
else{hue=4.0+(red-green)/delta;}
hue*=60.0;if(hue<0.0){hue+=360.0;}}
return[hue,saturation,max];};cinejs.util.internal.rgbType=[function(value,w,q,t){return[value,t,w];},function(value,w,q,t){return[q,value,w];},function(value,w,q,t){return[w,value,t];},function(value,w,q,t){return[w,q,value];},function(value,w,q,t){return[t,w,value];},function(value,w,q,t){return[value,w,q];}];cinejs.Player=function(options){this.filters=[];this.options={frameDelay:25};for(var option in options){if(options.hasOwnProperty(option)){this.options[option]=options[option];}}};cinejs.Player.prototype.check=function(){if(!(this.options.source instanceof HTMLVideoElement||this.options.source instanceof HTMLImageElement)){throw"The source option must be a video or image element";}
if(!this.options.destination instanceof HTMLCanvasElement){throw"The destination option must be a canvas element";}
if(typeof this.options.frameDelay!=="number"||this.options.frameDelay<0){throw"The frame delay must be a non-negative number";}
if(this.options.source.width!=this.options.destination.width||this.options.source.height!=this.options.destination.height){throw"The source and destination dimensions must be specified and identical";}
for(var i in this.filters){if(this.filters.hasOwnProperty(i)){var filter=this.filters[i];if(typeof filter.processFrame!=="function"){var name="unknown";if(filter.name){name=filter.name;}
throw"Filter "+name+" does not have a processFrame method";}}}};cinejs.Player.prototype.createIntermediateCanvas=function(){var canvas=document.createElement("canvas");canvas.style.display="none";canvas.width=this.options.source.width;canvas.height=this.options.source.height;document.body.appendChild(canvas);return canvas;};cinejs.Player.prototype.play=function(){this.check();var intermediate=this.createIntermediateCanvas();if(!intermediate instanceof HTMLCanvasElement){throw"Intermediate canvas is not a canvas";}
var self=this;if(this.options.source instanceof HTMLVideoElement){this.options.source.addEventListener("play",function(){self.renderFrame(self.options.source,intermediate,self.options.destination);},false);this.options.source.play();}
else{self.renderFrame(self.options.source,intermediate,self.options.destination);}};cinejs.Player.prototype.renderFrame=function(source,intermediate,destination){if(this.filters.length===0){var context=destination.getContext("2d");context.drawImage(source,0,0,destination.width,destination.height);}
else{var intermediateContext=intermediate.getContext("2d");var destinationContext=destination.getContext("2d");intermediateContext.drawImage(source,0,0);var imageData=intermediateContext.getImageData(0,0,intermediate.width,intermediate.height);for(var filter in this.filters){if(this.filters.hasOwnProperty(filter)){this.filters[filter].processFrame(imageData,intermediate);}}
destinationContext.putImageData(imageData,0,0);imageData=null;}
if(source instanceof HTMLVideoElement&&!(source.paused||source.ended)){var self=this;window.setTimeout(function(){self.renderFrame(source,intermediate,destination);},this.options.frameDelay);}};cinejs.filters.BrightnessContrast=function(brightness,contrast){this.brightness=brightness;this.contrast=contrast;};cinejs.filters.BrightnessContrast.prototype.processFrame=function(frame,canvas){for(var i=0;i<frame.data.length;i+=4){frame.data[i+0]=this.processSubpixel(frame.data[i+0]);frame.data[i+1]=this.processSubpixel(frame.data[i+1]);frame.data[i+2]=this.processSubpixel(frame.data[i+2]);}};cinejs.filters.BrightnessContrast.prototype.processSubpixel=function(subpixel){if(this.contrast!==1){subpixel-=128;subpixel*=this.contrast;subpixel+=128;}
subpixel+=(255*this.brightness);return Math.min(255,Math.max(0,subpixel));};cinejs.filters.ColourLevel=function(red,green,blue){this.red=red;this.green=green;this.blue=blue;};cinejs.filters.ColourLevel.prototype.processFrame=function(frame,canvas){for(var i=0;i<frame.data.length;i+=4){frame.data[i+0]=Math.min(frame.data[i+0]*this.red,255);frame.data[i+1]=Math.min(frame.data[i+1]*this.green,255);frame.data[i+2]=Math.min(frame.data[i+2]*this.blue,255);}};cinejs.filters.ColorLevel=cinejs.filters.ColourLevel;cinejs.filters.EdgeDetect=function(){this.filter=[[-1.0,0.0,-1.0],[0.0,4.0,0.0],[-1.0,0.0,-1.0]];};cinejs.filters.EdgeDetect.prototype.processFrame=function(frame,canvas){cinejs.util.applyConvolution(frame,canvas.width,canvas.height,this.filter,1,127);};cinejs.filters.Emboss=function(){this.filter=[[1.5,0.0,0.0],[0.0,0.0,0.0],[0.0,0.0,-1.5]];};cinejs.filters.Emboss.prototype.processFrame=function(frame,canvas){cinejs.util.applyConvolution(frame,canvas.width,canvas.height,this.filter,1,127);};cinejs.filters.GaussianBlur=function(radius,sigma){if(!sigma){sigma=0.8;}
this.radius=radius;this.kernel=this.calculateKernel(radius,sigma);};cinejs.filters.GaussianBlur.prototype.processFrame=function(frame,canvas){var i=0;var sourceIndex;var red;var green;var blue;var ki;var fi;var fcol;var frow;var row;var col;for(row=0;row<canvas.height;row++){for(col=0;col<canvas.width;col++){i=4*(row*canvas.width+col);ki=0;red=green=blue=0.0;for(fi=-this.radius;fi<=this.radius;fi++){fcol=col+fi;if(fcol<0){fcol=0;}
else if(fcol>canvas.width){fcol=canvas.width-1;}
sourceIndex=4*(row*canvas.width+fcol);red+=this.kernel[ki]*frame.data[sourceIndex+0];green+=this.kernel[ki]*frame.data[sourceIndex+1];blue+=this.kernel[ki]*frame.data[sourceIndex+2];++ki;}
frame.data[i+0]=red;frame.data[i+1]=green;frame.data[i+2]=blue;}}
for(row=0;row<canvas.height;row++){for(col=0;col<canvas.width;col++){i=4*(row*canvas.width+col);ki=0;red=green=blue=0.0;for(fi=-this.radius;fi<=this.radius;fi++){frow=row+fi;if(frow<0){frow=0;}
else if(frow>=canvas.height){frow=canvas.height-1;}
sourceIndex=4*(frow*canvas.width+col);red+=this.kernel[ki]*frame.data[sourceIndex+0];green+=this.kernel[ki]*frame.data[sourceIndex+1];blue+=this.kernel[ki]*frame.data[sourceIndex+2];++ki;}
frame.data[i+0]=red;frame.data[i+1]=green;frame.data[i+2]=blue;}}};cinejs.filters.GaussianBlur.prototype.calculateKernel=function(radius,sigma){var kernel=[];var i=0;for(i=0;i<=radius;i++){kernel.push(Math.pow((1.0/(sigma*Math.sqrt(2.0*Math.PI)))*Math.E,-(Math.pow(radius-i,2)/(2.0*sigma*sigma))));}
for(i=radius-1;i>=0;i--){kernel.push(kernel[i]);}
var sum=0.0;for(i=0;i<kernel.length;i++){sum+=kernel[i];}
for(i=0;i<kernel.length;i++){kernel[i]/=sum;}
return kernel;};cinejs.filters.Greyscale=function(){};cinejs.filters.Greyscale.prototype.processFrame=function(frame,canvas){for(var i=0;i<frame.data.length;i+=4){var value=(0.299*frame.data[i+0])+(0.587*frame.data[i+1])+(0.114*frame.data[i+2]);frame.data[i+0]=value;frame.data[i+1]=value;frame.data[i+2]=value;}};cinejs.filters.Grayscale=cinejs.filters.Greyscale;cinejs.filters.Invert=function(){};cinejs.filters.Invert.prototype.processFrame=function(frame,canvas){for(var i=0;i<frame.data.length;i+=4){frame.data[i+0]=255-frame.data[i+0];frame.data[i+1]=255-frame.data[i+1];frame.data[i+2]=255-frame.data[i+2];}};cinejs.filters.Posterise=function(levels){this.divisor=256/Math.floor(levels);};cinejs.filters.Posterise.prototype.processFrame=function(frame,canvas){for(var i=0;i<frame.data.length;i+=4){frame.data[i+0]=this.divisor*Math.round(frame.data[i+0]/this.divisor);frame.data[i+1]=this.divisor*Math.round(frame.data[i+1]/this.divisor);frame.data[i+2]=this.divisor*Math.round(frame.data[i+2]/this.divisor);}};cinejs.filters.Posterize=cinejs.filters.Posterise;cinejs.filters.Smooth=function(weight){this.filter=[[1.0,1.0,1.0],[1.0,weight,1.0],[1.0,1.0,1.0]];this.divisor=weight+8;};cinejs.filters.Smooth.prototype.processFrame=function(frame,canvas){cinejs.util.applyConvolution(frame,canvas.width,canvas.height,this.filter,this.divisor,0);};