[dcaparse] implement 14-to-16-bit conversion
@fraxinas
Submitted by Andreas Frisch Link to original bug (#644768)
Description
this is an extension for https://bugzilla.gnome.org/show_bug.cgi?id=644208
some decoders can only handle 16 bit streams, so the 14 bit streams which are present in some wav containers would have to be adapted respectively