Please add support for raw S16LE and F32LE #3
Description
Currently the raw encoder only supports U8. It would be nice if support for S16LE and F32LE could be added (already supported by Liquidsoap). The last one is the most desirable since it does not require any conversion (this is the format of samples we get from webaudio API [I'm not completely sure concerning the endianness]) so it could be more efficient cpu-wise (but of course not in terms of bandwidth...)