What should be reasons to use OpenSL ES instead of AudioTrack in Android?

android android-ndk audiotrack opensl
Alexander Kulyakhtin picture Alexander Kulyakhtin · Jun 25, 2012 · Viewed 44.2k times · Source

Currently I'm using AudioTrack passing to it audio data from native layer to play.

It seems I can use OpenSL ES in the native layer instead of AudioTrack in Java. What are the supposed advantages OpenSL ES gives as opposed to AudioTrack?

Answer

codetiger picture codetiger · Jun 26, 2012

OpenSL ES:

Advantages:

  1. Low Level Audio API in Android
  2. Device Independent on Android Phones
  3. Good for Gaming

Disadvantages:

  1. Supports only on 2.3+ os

AudioTrack:

Advantages:

  1. High Level API

Disadvantages:

  1. Works on Java layer and Native code has to call javalayer to play audio.

Related questions

How to change audio tempo and pitch individuality using ffmpeg?

I have managed to play audio files using ffmpeg and AudioTrack class in my android project. I can change the speed of audio using AudioTrack class setRate method. But it also change the pitch of audio, I want to change …

Read More
Android Fatal signal 11 (SIGSEGV) at 0x636f7d89 (code=1). How can it be tracked down?

I've been reading the other posts on tracking down the reasons for getting a SIGSEGV in an Android app. I plan to scour my app for possible NullPointers related to Canvas use, but my SIGSEGV barfs up a different memory …

Read More
java.lang.ClassNotFoundException: Didn't find class on path: dexpathlist

I'm currently working on a project in which I have to use purely native ndk. It worked when I try running an helloworld example from Irrlicht engine source. Then I try using it in my project following the same format …

Read More