为什么本土libmpg123这么长时间在Android上libgdx？

问题描述

我试图用GDX-音频扩展，但我有麻烦解码MP3文件。它的工作原理，但速度很慢！ 10秒的文件正在6.57秒脱code :(这里是方法：

I'm trying to use the gdx-audio extensions, but am having trouble decoding mp3s. It works, but very slowly!! A 10-second file is taking 6.57 seconds to decode :( Here is the method:

public void decode() {
    Mpg123Decoder decoder = new Mpg123Decoder(externalFile);

    short[] sampleArray = new short[1024];

    // read until we reach the end of the file
    while (decoder.readSamples(sampleArray, 0, sampleArray.length) > 0) {}
}

谁能告诉我这是为什么要花这么长时间？

Can anyone tell me why this is taking so long?

推荐答案

由于libmpg123是一个软件去codeR，这并不在CPU上的所有工作。根据你所拥有的CPU，你通常只能得到2倍的实时解码。我们没有太多启用ARM汇编在我们libmpg123构建，可以帮助它加速了一点，但通常不是。

Because libmpg123 is a software decoder, that does all the work on the CPU. Depending on what CPU you have, you usually only get 2x real-time decoding. We haven't enabled ARM assembly in our libmpg123 build, that could help speeding it up a little, but usually not by much.

这篇关于为什么本土libmpg123这么长时间在Android上libgdx？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！