Implement channel up-mixing and down-mixing rules
Created attachment 190140 [details]
Comment on attachment 190140 [details]
View in context: https://bugs.webkit.org/attachment.cgi?id=190140&action=review
Looks good. Thanks for the explanation offline about the algorithm and the layout test. One comment.
> + vadd(sourceC, 1, destination, 1, destination, 1, length());
This is basically exactly the same code as in speakersCopyFrom. Could you refactor it into a separate method to share the code?
Committed r144235: <http://trac.webkit.org/changeset/144235>