player/js/elements/ImageElement.js

function IImageElement(data,globalData,comp){
    this.assetData = globalData.getAssetData(data.refId);
    this.initElement(data,globalData,comp);
    this.sourceRect = {top:0,left:0,width:this.assetData.w,height:this.assetData.h};
}

extendPrototype([BaseElement,TransformElement,SVGBaseElement,HierarchyElement,FrameElement,RenderableDOMElement], IImageElement);

IImageElement.prototype.createContent = function(){

    var assetPath = this.globalData.getAssetsPath(this.assetData);

    this.innerElem = createNS('image');
    this.innerElem.setAttribute('width',this.assetData.w+'px');
    this.innerElem.setAttribute('height',this.assetData.h+'px');
    this.innerElem.setAttribute('preserveAspectRatio',this.assetData.pr || this.globalData.renderConfig.imagePreserveAspectRatio);
    this.innerElem.setAttributeNS('http://www.w3.org/1999/xlink','href',assetPath);
    
    this.layerElement.appendChild(this.innerElem);
};

IImageElement.prototype.sourceRectAtTime = function() {
	return this.sourceRect;
}