XMLHttpRequest 加载到的gif图片数据 如何转成gif 图片

CacheNetImg: function (data, sprite) {
var base = “data:image/png/jpg;base64,”+data;
var img = new Image();
img.src = base;
var texture = new cc.Texture2D();
texture.initWithElement(img);
texture.handleLoadedTexture();
var newframe = new cc.SpriteFrame(texture);
sprite.spriteFrame =newframe;

},

data 是获取到的图片信息 sprite 是需要赋值对象