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Android NDK Beginner`s Guide - Second Edition
book

Android NDK Beginner`s Guide - Second Edition

by Sylvain Ratabouil
April 2015
Beginner to intermediate content levelBeginner to intermediate
494 pages
10h 26m
English
Packt Publishing
Content preview from Android NDK Beginner`s Guide - Second Edition

Recording sounds

Android devices are all about interactions. Interactions can come not only from touches and sensors, but also from audio input. Most Android devices provide a microphone to record sound and allow an application such as the Android desktop search to offer vocal features to record queries.

If the sound input is available, OpenSL ES gives native access to the sound recorder. It collaborates with a buffer queue to take data from the input device and fill an output sound buffer from it. The setup is pretty similar to what has been done with AudioPlayer, except that data source and data sink are permuted.

Have a go hero – recording and playing a sound

To discover how recording works, record a sound when an application starts and play it ...

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Publisher Resources

ISBN: 9781783989645Supplemental Content