在柔性，动态地从连接codeD字节加载的Sound对象 [英] in flex, dynamically load Sound object from encoded bytes

问题描述

我有一个包含嵌入在它的声音（不同的编码）遗留的文件格式。我希望能够在Flash（空气？）播放这些声音通过读取声音字节出来的文件和实例化一个Sound对象他们。

I have a legacy file format that contains sounds embedded in it (in various encodings). I would like to be able to play these sounds in Flash (Air?) by reading the sound bytes out of the file and instantiating a Sound object with them.

如果声音unen codeD（如原始的PCM），我发现，我可以使用新的Flex 4的SampleDataEvent.SAMPLE_DATA事件要播放的声音。

If the sound is unencoded (e.g., raw pcm), I've found that I can use the new flex 4 SampleDataEvent.SAMPLE_DATA event to play the sound.

但是，如果声音是EN codeD（如MP3），那么我无所适从。预期的SampleDataEvent.SAMPLE_DATA声音必须是原始的PCM。从我所看到的，连接codeD声音只能通过[嵌入]荷兰国际集团他们被实例化，或者通过使用调用Sound.load（）的URLRequest。

However, if the sound is encoded (e.g., mp3), then I'm at a loss. The sound expected by SampleDataEvent.SAMPLE_DATA has to be raw pcm. From what I've seen, encoded Sounds can only be instantiated by [Embed]ing them, or by using a URLRequest with Sound.load().

当然，还有第三条路？ AMF或E4X？

Surely there's a third way? AMF or e4x?

推荐答案

有真的只有两个你去的路线。首先是写一个去codeR ActionScript中。您可以使用炼金术端口超过一些C / C ++ code，以使这项工作更容易显著（也可能是更好的性能）。这正是我是如何得到的Ogg Vorbis播放与Flash的工作。

There are really only two routes for you to go. The first is to write a decoder in ActionScript. You may be able to use Alchemy to port over some C/C++ code to make this job significantly easier (and possibly more performant). This is exactly how I got Ogg Vorbis playback to work with Flash.

另外一种选择是动态创建一个有效的SWF的ByteArray内。这SWF可能包含是由你的声音数据的嵌入声音对象。许多人都被拉断过类似的黑客攻击之前的Flash Player 10是可用的。我相信你可以找到一个很好的起点在安德烈·米歇尔和JOA艾伯特的PopForge codeBase的。

The other option is to dynamically create a valid SWF inside of a ByteArray. That SWF could contain an embedded sound object that was made up of your sound data. A number of folks have pulled off similar hacks in the past before Flash Player 10 was available. I believe you can find a good place to start in Andre Michelle's and Joa Ebert's PopForge codebase.

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