How can I get latency info from Android's AudioTrack class?

Posted by Ryan on Stack Overflow See other posts from Stack Overflow or by Ryan
Published on 2010-04-08T03:58:32Z Indexed on 2010/04/08 4:03 UTC
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audio

I've noticed that the C++ classes underlying the AudioTrack and AudioRecord APIs in Android both have a latency() method that is not exposed via JNI. As far as I can see, the latency() method in AudioRecord still does not take into account the hardware latency (they have a TODO comment for that), but the latency() method in AudioTrack does add in the hardware latency.

I absolutely need to get this latency value from AudioTrack. Is there any possible way I can do this? I don't care what kind of crazy hack is needed as long as it doesn't require a rooted phone (the resulting code must still be packaged as an app on the market).

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