Do not resample DSD output

Currently, Volumio resamples DSD output.

This makes no sense, as none of the 100% volume, DSD Direct / DSD over PCM options make any sense, since now it’s just a PCM stream.

I recommend the following fix:

  1. Change DSD Playback mode to support: PCM, DSD Direct, DSD over PCM. This is the standard 3 choice in other audio players.
  2. When DSD playback is DSD Direct or DSD over PCM, do not resample.

For example, this is how Colibri player does it on macOS (specialized in DSD):

Screenshot 2020-05-11 at 21.01.23.png