JPEG EN codeR超慢，如何优化呢？ [英] JPEG encoder super slow, how to Optimize it?

问题描述

我要建一个应用程序使用ActionScript 3.0在我的Flash Builder中。这是一个后续问题<一href="http://stackoverflow.com/questions/14970353/how-to-rotate-image-from-cameraui-for-ios-in-actionscript-3-0">this问题。

I'm building an App with actionscript 3.0 in my Flash builder. This is a followup question this question.

我需要的ByteArray上传到我的服务器，但我使用到BitmapData转换为ByteArray的功能是超级慢，很慢它冻结了我的移动设备。我的code是如下：

I need to upload the bytearray to my server, but the function i use to convert the bitmapdata to a ByteArray is super slow, So slow it freezes up my mobile device. my code is as follows:

var jpgenc:JPEGEncoder = new JPEGEncoder(50);
trace('encode');
//encode the bitmapdata object and keep the encoded ByteArray

    var imgByteArray:ByteArray = jpgenc.encode(bitmap);
temp2 = File.applicationStorageDirectory.resolvePath("snapshot.jpg");
    var fs:FileStream = new FileStream();
    trace('fs');
    try{     
     //open file in write mode     
     fs.open(temp2,FileMode.WRITE);
          //write bytes from the byte array

     fs.writeBytes(imgByteArray);
          //close the file

     fs.close();
         }catch(e:Error){

有一种不同的方式将其转换为ByteArray？有没有更好的办法？在先进的感谢！

Is there a different way to convert it to a byteArray? is there a better way? thanks in advanced!

〜MYY

推荐答案

使用BitmapData.en code（），它的速度更快数量级上的移动订单<一href="http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/display/BitmapData.html#en$c$c%28%29" rel="nofollow">http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/display/BitmapData.html#en$c$c%28%29

Use BitmapData.encode(), it's faster by orders of magnitude on mobile http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/display/BitmapData.html#encode%28%29

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