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在Android上从mp3快速转换为WAV

[英]Fast conversion from mp3 to WAV on Android

原文 2013-07-17 06:06:05 0 1 java/ android/ c++/ mp3/ wav

I am trying to convert a mp3 file into WAVE format in my Android application. 我正在尝试在Android应用程序中将mp3文件转换为WAVE格式 。 This operation should take little time, as the application is social, and it is not acceptable for the user to wait for too long. 由于该应用程序是社交应用程序，因此此操作应该花费很少的时间，并且用户等待太长时间是不可接受的。

So here is where I am : 所以这是我的位置：

I have already tried to use JLayer (proposed in a similar question Convert mp3 to wav on Android ), but the conversion is too slow: it takes about 40 seconds for a 2 minutes mp3 file. 我已经尝试使用JLayer（在类似的问题（在Android上将mp3转换为wav ）中提出），但转换速度太慢：一个2分钟的mp3文件大约需要40秒。
Concerning the library LAME (as in Lame4Android ), I also tried it (with Android NDK) but the result is still too slow (15s to 10s). 关于库LAME（如Lame4Android一样），我也尝试了它（使用Android NDK），但结果仍然太慢（15s至10s）。
I came across another library: JUCE , but it is too vast, and including the entire library in the project in order to do that simple conversion seems a bit... excessive. 我遇到了另一个库： JUCE ，但是它太大了，为了进行简单的转换，将整个库包括在项目中似乎有点...过分。 And I am also afraid it will slow the application. 而且我还担心它会减慢应用程序的速度。

So what I am currently looking for is a C/C++ library to use in order to do that. 因此，我目前正在寻找的是要使用的C / C ++库。 Do you know any fast libraries? 你知道快速图书馆吗？

Thank you. 谢谢。

1 个解决方案

Not sure if the license will work for you (GPLv2), but have you considered libmad ? 不知道许可证是否对您有用（GPLv2），但是您是否考虑过libmad ？

As I understand it, there's not a NDK build available for download, but here is a page describing how to make one yourself... 据我了解，没有NDK版本可以下载，但是这里有一个页面介绍如何制作自己的游戏...

Another option is libmpg123 , which is LGPLv2.1. 另一个选项是libmpg123 ，它是LGPLv2.1。 The same blog has an article describing how to use it in Android. 同一博客上有一篇文章描述了如何在Android中使用它。