AS3 can not load a Bitmap by using loadByte in Thread?

问题

Flash Player supported Thread in 11.5+.

I want to load an image by using Loader.loadBytes() in Worker Thread.

Which the Image ByteArray are generated in Main Thread.

But I can NOT do it.

I got a SecurityError like this:

SecurityError: Error #2123: Security sandbox violation: Loader.content: file:///E:/work/ASWorkSpace/test/bin-debug/test.swf cannot access file:///E:/work/ASWorkSpace/test/bin-debug/test.swf/[[DYNAMIC]]/1. No policy files granted access.

I init my worker thread like:

worker = WorkerDomain.current.createWorker(this.loaderInfo.bytes);

so it's not a swf from remote, but it's local or like

[Embed(source="../workerswfs/Thread.swf", mimeType="application/octet-stream")]

I found in manual. It said "If the loaded content is an image, its data cannot be accessed by a SWF file outside of the security sandbox, unless the domain of that SWF file was included in a URL policy file at the origin domain of the image."

I have gotten a solution. I loadByte() twice, it seems "washed off" the ByteArray source. so FlashPlayer considered the ByteArray generated by Worker Thread, and it allowed to access loader.content. Like this:

            //Messages to the Main thread
        protected function onMainToWorker(event:Event):void {
            var msg:ByteArray = mainToWorker.receive() as ByteArray;
            trace(msg.length);
            var loader:Loader = new Loader();
            loader.contentLoaderInfo.addEventListener(Event.COMPLETE, bytesComplete);
            var bytes:ByteArray = new ByteArray();
            bytes.writeBytes(msg,0,msg.length);
            loader.loadBytes(bytes);
        }

        private function loadedAagin(e:Event):void
        {
            var loader:Loader = (e.target as LoaderInfo).loader;
                    // Here we can access it.
            var bmp:Bitmap = loader.content as Bitmap;
        }
        private function bytesComplete(e:Event):void
        {
            var loader:Loader = (e.target as LoaderInfo).loader;
            loader.contentLoaderInfo.removeEventListener(Event.COMPLETE, bytesComplete);

            // var bmp:Bitmap = loader.content as Bitmap;  It can not be accessed
            // just loadBytes again, it seems "washed off" the ByteArray source

            var newloader:Loader = new Loader();
            newloader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadedAagin);
            newloader.loadBytes(loader.contentLoaderInfo.bytes);
        }

But it's so ugly isn't it? Is there anyone has good idea?

来源：https://stackoverflow.com/questions/16889490/as3-can-not-load-a-bitmap-by-using-loadbyte-in-thread

标签

actionscript-3

flash