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UCM for Android

March 23, 2012

Following the ASoC Embedded ALSA Conference and the Linaro Multimedia Summit last year, I put plans in place to bring UCM to Linaro for both the Ubuntu-based builds and the Android builds.  We are seeing that happen.  UCM functionality is improving in Ubuntu and now is coming to Android.  Based on the initial drop of tinyhal by Mark Brown, I now have a prototype running on Pandaboard.  This code should be viewed as a proof-of-concept framework for UCM, not a complete fully-functioning implementation.  The code supports basic playback and will need to be enhanced for a full dynamic verb set.  I have created a git repository for my work here.

To give it a try, you will need to follow the Linaro Android instructions for building from source, which I recently blogged here.  Follow the README instructions for copying files to their needed locations.  You can test playback with tinyplay or the Android music player app.  The configuration file sets the initial volume, but the Android settings work normally for adjusting this level.

The remaining needed work will continue over the next several weeks, adding support for other mixing and routes.  I am also looking to unify the file formats between Ubuntu and Android.  Stay tuned for that proposal.  As always, contributions are welcome.

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