RFR: 8232589: Remove CoreAudio Utility Classes

Tue Jan 7 07:55:14 UTC 2020

On Wed, 18 Dec 2019 01:04:42 GMT, Alexander Matveev <almatvee at openjdk.org> wrote:

> https://bugs.openjdk.java.net/browse/JDK-8232589
> 
> - Removed CoreAudio Utility classes.
> - Spectrum which was depended on CoreAudio Utility classes for doing computations will now run GStreamer spectrum element to do spectrum. Element will be run without pipeline and will be used as utility library to do spectrum calculation. I added extra APIs to bypass proper element initialization.
> - Equalizer and audio unit (volume and balance) where modified, so we can run then directly without CoreAudio pipeline.

The changes look ok to me, and the build + tests are nominal.
Since there are new calculations being used now, I am slightly concerned about performance regression, but this is very hard to measure, so I suggest we build an EA release once the PR is merged.

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Marked as reviewed by jvos (Reviewer).

PR: https://git.openjdk.java.net/jfx/pull/69