Mozilla Bug Bug 893307
Mozilla Bug Bug 893307

Compute the number of bytes per frame before upmix in a correct way when using
surround speakers in the WASAPI backend.

kinetiknz/cubeb,kinetiknz/cubeb,ieei/cubeb,padenot/cubeb,kinetiknz/cubeb,padenot/cubeb,padenot/cubeb,ieei/cubeb