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Diffstat (limited to 'tools/nsfv-setup/default.nix')
| -rw-r--r-- | tools/nsfv-setup/default.nix | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/tools/nsfv-setup/default.nix b/tools/nsfv-setup/default.nix new file mode 100644 index 000000000000..98dcc61b7bc1 --- /dev/null +++ b/tools/nsfv-setup/default.nix @@ -0,0 +1,28 @@ +# Configures a running Pulseaudio instance with an LADSP filter that +# creates a noise-cancelling sink. +# +# This can be used to, for example, cancel noise from an incoming +# video conferencing audio stream. +# +# There are some caveats, for example this will not distinguish +# between noise from different participants and I have no idea what +# happens if the default sink goes away. +# +# If this script is run while an NSFV sink exists, the existing sink +# will first be removed. +{ depot, pkgs, ... }: + +let + inherit (pkgs) ripgrep pulseaudio; + inherit (depot.third_party) nsfv; +in pkgs.writeShellScriptBin "nsfv-setup" '' + export PATH="${ripgrep}/bin:${pulseaudio}/bin:$PATH" + + if pacmd list-sinks | rg librnnoise_ladspa.so >/dev/null; then + pactl unload-module module-ladspa-sink + fi + + SINK=$(${pulseaudio}/bin/pacmd info | ${ripgrep}/bin/rg -r '$1' '^Default sink name: (.*)$') + echo "Setting up NSFV filtering to sink ''${SINK}" + ${pulseaudio}/bin/pacmd load-module module-ladspa-sink sink_name=NSFV sink_master=''${SINK} label=noise_suppressor_mono plugin=${nsfv}/lib/ladspa/librnnoise_ladspa.so control=42 rate=48000 +'' |