pulseaudio2snapfifo.sh

#!/bin/sh

#
# Creates a new pulseaudio PCM device that streams into a unix pipe from which it is distributed by a local snapcast server to all snapcast clients within the local network.
# After this command has been run, "Snapcast" can be selected as output device, using `pavucontrol`.
# See https://github.com/badaix/snapcast/blob/master/doc/player_setup.md#pulseaudio
#

SNAPFIFO=/tmp/snapfifo

set -eux

# To reset pulseaudio settings, kill it (it will be restarted automatically)
pulseaudio -k

# Create virtual pulseaudio output device that streams to the unix pipe at /tmp/snapfifo. Rename it to "Snapcast".
pacmd load-module module-pipe-sink file=$SNAPFIFO sink_name=Snapcast format=s16le rate=48000
pacmd update-sink-proplist Snapcast device.description=Snapcast

# restart snapserver (that reads the /tmp/snapfifo unix pipe - configured by default within /etc/snapserver.conf)
service snapserver restart

# To improve audio quality, set `resample-method = soxr-vhq` in /etc/pulse/daemon.conf.
# To reduce the latency, reduce the `buffer` in /etc/snapserver.conf.