ByteArray中的格式返回从C无效 [英] format of ByteArray returned from C is invalid

问题描述

以下是code片断：

AS方：（IMG是引用一个＆lt;图像＆GT; 实例）

AS side:(img is reference to an <Image> instance)

        bitmapData = Bitmap(img.content).bitmapData;
        var pixels:ByteArray = bitmapData.getPixels(bitmapData.rect);
        pixels.position = 0;
        var output:ByteArray = new ByteArray();
        img_width = bitmapData.width;
        img_height = bitmapData.height;
        ////invoke C code by alchemy
        lomoEncoder.encode(pixels, output, img_width, img_height);
        var newImage:Image = new Image();
        //can't show the image
        newImage.source = output;

C code：

C code:

AS3_Val dest;
AS3_Val source;
unsigned char* pixels = (unsigned char *)malloc(Size);
AS3_ByteArray_readBytes(pixels, source, Size);
pixels = darkCornerLomoEffect((unsigned char*)pixels, image_width, image_height);
AS3_ByteArray_writeBytes(dest, (char*) pixels, length);

在AS端，当获得 DEST 从C，loader.load（DEST）抛出一个错误：未处理IOErrorEvent :.文本=错误＃2124。 因此，如何处理的字节数组格式，这样方可以重新组织，并以此为图片源属性？

In the AS side, when get the dest from C, loader.load(dest) throw an error:Unhandled IOErrorEvent:. text=Error #2124. So How to deal with the byteArray format, so AS side can reorganize and use it as Image source property?

推荐答案

我怀疑你的问题是<一个href="http://stackoverflow.com/questions/6315417/convert-little-endian-bytearray-to-big-endian-in-as3">byte-ordering.你需要从输入的ByteArray看完后翻转你的字节。对于输出的ByteArray您可能需要再次翻转它们，或者将其端属性 Endian.LITTLE_ENDIAN 。

I suspect your problem is byte-ordering. You need to flip your bytes after reading from the input ByteArray. For the output ByteArray you either need to flip them again, or set its endian property to Endian.LITTLE_ENDIAN.

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